An error occurred:
'\n + escape(e.message + '', true)\n + '';\n if (async) {\n return Promise.resolve(msg);\n }\n return msg;\n }\n if (async) {\n return Promise.reject(e);\n }\n throw e;\n };\n }\n}\n\nconst markedInstance = new Marked();\nfunction marked(src, opt) {\n return markedInstance.parse(src, opt);\n}\n/**\n * Sets the default options.\n *\n * @param options Hash of options\n */\nmarked.options =\n marked.setOptions = function (options) {\n markedInstance.setOptions(options);\n marked.defaults = markedInstance.defaults;\n changeDefaults(marked.defaults);\n return marked;\n };\n/**\n * Gets the original marked default options.\n */\nmarked.getDefaults = _getDefaults;\nmarked.defaults = _defaults;\n/**\n * Use Extension\n */\nmarked.use = function (...args) {\n markedInstance.use(...args);\n marked.defaults = markedInstance.defaults;\n changeDefaults(marked.defaults);\n return marked;\n};\n/**\n * Run callback for every token\n */\nmarked.walkTokens = function (tokens, callback) {\n return markedInstance.walkTokens(tokens, callback);\n};\n/**\n * Compiles markdown to HTML without enclosing `p` tag.\n *\n * @param src String of markdown source to be compiled\n * @param options Hash of options\n * @return String of compiled HTML\n */\nmarked.parseInline = markedInstance.parseInline;\n/**\n * Expose\n */\nmarked.Parser = _Parser;\nmarked.parser = _Parser.parse;\nmarked.Renderer = _Renderer;\nmarked.TextRenderer = _TextRenderer;\nmarked.Lexer = _Lexer;\nmarked.lexer = _Lexer.lex;\nmarked.Tokenizer = _Tokenizer;\nmarked.Hooks = _Hooks;\nmarked.parse = marked;\nconst options = marked.options;\nconst setOptions = marked.setOptions;\nconst use = marked.use;\nconst walkTokens = marked.walkTokens;\nconst parseInline = marked.parseInline;\nconst parse = marked;\nconst parser = _Parser.parse;\nconst lexer = _Lexer.lex;\n\nexport { _Hooks as Hooks, _Lexer as Lexer, Marked, _Parser as Parser, _Renderer as Renderer, _TextRenderer as TextRenderer, _Tokenizer as Tokenizer, _defaults as defaults, _getDefaults as getDefaults, lexer, marked, options, parse, parseInline, parser, setOptions, use, walkTokens };\n//# sourceMappingURL=marked.esm.js.map\n","const theme = localStorage.getItem(\"theme\");\n\nexport default {\n color: {\n default: theme == \"dark\" ? \"rgba(2,160,255,0.75)\" : \"rgba(2,160,255,.75)\",\n half: theme == \"dark\" ? \"rgba(2,160,255,0.50)\" : \"rgba(2,160,255,0.50)\",\n quarter: theme == \"dark\" ? \"rgba(2,160,255,0.25)\" : \"rgba(2,160,255,0.25)\",\n zero: theme == \"dark\" ? \"rgba(2,160,255,0)\" : \"rgba(2,160,255,0)\",\n border: theme == \"dark\" ? \"rgba(51,65,85,0.75)\" : \"rgba(51,65,85,0.25)\",\n },\n};\n","import colors from \"./colors\";\n\nexport default (ctx, label, labels, data) => {\n const gradient = ctx.createLinearGradient(0, 0, 0, 1000);\n gradient.addColorStop(0, colors.color.default);\n gradient.addColorStop(1, colors.color.zero);\n\n return {\n type: \"bar\",\n data: {\n labels: labels,\n datasets: [\n {\n label: label,\n data: data,\n backgroundColor: gradient,\n borderColor: gradient,\n borderRadius: 4,\n barThickness: 20,\n },\n ],\n },\n options: {\n maintainAspectRatio: false,\n plugins: {\n legend: {\n display: false,\n },\n },\n scales: {\n x: {\n grid: {\n display: false,\n },\n },\n y: {\n beginAtZero: true,\n grace: \"15%\",\n border: {\n dash: [4, 4],\n },\n grid: {\n color: colors.color.border,\n },\n ticks: {\n // forces step size to be 50 units\n stepSize: 1,\n },\n },\n },\n tension: 0.4,\n responsive: true,\n },\n };\n};\n","/*!\n * Chart.js v3.9.1\n * https://www.chartjs.org\n * (c) 2022 Chart.js Contributors\n * Released under the MIT License\n */\nfunction noop() {}\nconst uid = (function() {\n let id = 0;\n return function() {\n return id++;\n };\n}());\nfunction isNullOrUndef(value) {\n return value === null || typeof value === 'undefined';\n}\nfunction isArray(value) {\n if (Array.isArray && Array.isArray(value)) {\n return true;\n }\n const type = Object.prototype.toString.call(value);\n if (type.slice(0, 7) === '[object' && type.slice(-6) === 'Array]') {\n return true;\n }\n return false;\n}\nfunction isObject(value) {\n return value !== null && Object.prototype.toString.call(value) === '[object Object]';\n}\nconst isNumberFinite = (value) => (typeof value === 'number' || value instanceof Number) && isFinite(+value);\nfunction finiteOrDefault(value, defaultValue) {\n return isNumberFinite(value) ? value : defaultValue;\n}\nfunction valueOrDefault(value, defaultValue) {\n return typeof value === 'undefined' ? defaultValue : value;\n}\nconst toPercentage = (value, dimension) =>\n typeof value === 'string' && value.endsWith('%') ?\n parseFloat(value) / 100\n : value / dimension;\nconst toDimension = (value, dimension) =>\n typeof value === 'string' && value.endsWith('%') ?\n parseFloat(value) / 100 * dimension\n : +value;\nfunction callback(fn, args, thisArg) {\n if (fn && typeof fn.call === 'function') {\n return fn.apply(thisArg, args);\n }\n}\nfunction each(loopable, fn, thisArg, reverse) {\n let i, len, keys;\n if (isArray(loopable)) {\n len = loopable.length;\n if (reverse) {\n for (i = len - 1; i >= 0; i--) {\n fn.call(thisArg, loopable[i], i);\n }\n } else {\n for (i = 0; i < len; i++) {\n fn.call(thisArg, loopable[i], i);\n }\n }\n } else if (isObject(loopable)) {\n keys = Object.keys(loopable);\n len = keys.length;\n for (i = 0; i < len; i++) {\n fn.call(thisArg, loopable[keys[i]], keys[i]);\n }\n }\n}\nfunction _elementsEqual(a0, a1) {\n let i, ilen, v0, v1;\n if (!a0 || !a1 || a0.length !== a1.length) {\n return false;\n }\n for (i = 0, ilen = a0.length; i < ilen; ++i) {\n v0 = a0[i];\n v1 = a1[i];\n if (v0.datasetIndex !== v1.datasetIndex || v0.index !== v1.index) {\n return false;\n }\n }\n return true;\n}\nfunction clone$1(source) {\n if (isArray(source)) {\n return source.map(clone$1);\n }\n if (isObject(source)) {\n const target = Object.create(null);\n const keys = Object.keys(source);\n const klen = keys.length;\n let k = 0;\n for (; k < klen; ++k) {\n target[keys[k]] = clone$1(source[keys[k]]);\n }\n return target;\n }\n return source;\n}\nfunction isValidKey(key) {\n return ['__proto__', 'prototype', 'constructor'].indexOf(key) === -1;\n}\nfunction _merger(key, target, source, options) {\n if (!isValidKey(key)) {\n return;\n }\n const tval = target[key];\n const sval = source[key];\n if (isObject(tval) && isObject(sval)) {\n merge(tval, sval, options);\n } else {\n target[key] = clone$1(sval);\n }\n}\nfunction merge(target, source, options) {\n const sources = isArray(source) ? source : [source];\n const ilen = sources.length;\n if (!isObject(target)) {\n return target;\n }\n options = options || {};\n const merger = options.merger || _merger;\n for (let i = 0; i < ilen; ++i) {\n source = sources[i];\n if (!isObject(source)) {\n continue;\n }\n const keys = Object.keys(source);\n for (let k = 0, klen = keys.length; k < klen; ++k) {\n merger(keys[k], target, source, options);\n }\n }\n return target;\n}\nfunction mergeIf(target, source) {\n return merge(target, source, {merger: _mergerIf});\n}\nfunction _mergerIf(key, target, source) {\n if (!isValidKey(key)) {\n return;\n }\n const tval = target[key];\n const sval = source[key];\n if (isObject(tval) && isObject(sval)) {\n mergeIf(tval, sval);\n } else if (!Object.prototype.hasOwnProperty.call(target, key)) {\n target[key] = clone$1(sval);\n }\n}\nfunction _deprecated(scope, value, previous, current) {\n if (value !== undefined) {\n console.warn(scope + ': \"' + previous +\n\t\t\t'\" is deprecated. Please use \"' + current + '\" instead');\n }\n}\nconst keyResolvers = {\n '': v => v,\n x: o => o.x,\n y: o => o.y\n};\nfunction resolveObjectKey(obj, key) {\n const resolver = keyResolvers[key] || (keyResolvers[key] = _getKeyResolver(key));\n return resolver(obj);\n}\nfunction _getKeyResolver(key) {\n const keys = _splitKey(key);\n return obj => {\n for (const k of keys) {\n if (k === '') {\n break;\n }\n obj = obj && obj[k];\n }\n return obj;\n };\n}\nfunction _splitKey(key) {\n const parts = key.split('.');\n const keys = [];\n let tmp = '';\n for (const part of parts) {\n tmp += part;\n if (tmp.endsWith('\\\\')) {\n tmp = tmp.slice(0, -1) + '.';\n } else {\n keys.push(tmp);\n tmp = '';\n }\n }\n return keys;\n}\nfunction _capitalize(str) {\n return str.charAt(0).toUpperCase() + str.slice(1);\n}\nconst defined = (value) => typeof value !== 'undefined';\nconst isFunction = (value) => typeof value === 'function';\nconst setsEqual = (a, b) => {\n if (a.size !== b.size) {\n return false;\n }\n for (const item of a) {\n if (!b.has(item)) {\n return false;\n }\n }\n return true;\n};\nfunction _isClickEvent(e) {\n return e.type === 'mouseup' || e.type === 'click' || e.type === 'contextmenu';\n}\n\nconst PI = Math.PI;\nconst TAU = 2 * PI;\nconst PITAU = TAU + PI;\nconst INFINITY = Number.POSITIVE_INFINITY;\nconst RAD_PER_DEG = PI / 180;\nconst HALF_PI = PI / 2;\nconst QUARTER_PI = PI / 4;\nconst TWO_THIRDS_PI = PI * 2 / 3;\nconst log10 = Math.log10;\nconst sign = Math.sign;\nfunction niceNum(range) {\n const roundedRange = Math.round(range);\n range = almostEquals(range, roundedRange, range / 1000) ? roundedRange : range;\n const niceRange = Math.pow(10, Math.floor(log10(range)));\n const fraction = range / niceRange;\n const niceFraction = fraction <= 1 ? 1 : fraction <= 2 ? 2 : fraction <= 5 ? 5 : 10;\n return niceFraction * niceRange;\n}\nfunction _factorize(value) {\n const result = [];\n const sqrt = Math.sqrt(value);\n let i;\n for (i = 1; i < sqrt; i++) {\n if (value % i === 0) {\n result.push(i);\n result.push(value / i);\n }\n }\n if (sqrt === (sqrt | 0)) {\n result.push(sqrt);\n }\n result.sort((a, b) => a - b).pop();\n return result;\n}\nfunction isNumber(n) {\n return !isNaN(parseFloat(n)) && isFinite(n);\n}\nfunction almostEquals(x, y, epsilon) {\n return Math.abs(x - y) < epsilon;\n}\nfunction almostWhole(x, epsilon) {\n const rounded = Math.round(x);\n return ((rounded - epsilon) <= x) && ((rounded + epsilon) >= x);\n}\nfunction _setMinAndMaxByKey(array, target, property) {\n let i, ilen, value;\n for (i = 0, ilen = array.length; i < ilen; i++) {\n value = array[i][property];\n if (!isNaN(value)) {\n target.min = Math.min(target.min, value);\n target.max = Math.max(target.max, value);\n }\n }\n}\nfunction toRadians(degrees) {\n return degrees * (PI / 180);\n}\nfunction toDegrees(radians) {\n return radians * (180 / PI);\n}\nfunction _decimalPlaces(x) {\n if (!isNumberFinite(x)) {\n return;\n }\n let e = 1;\n let p = 0;\n while (Math.round(x * e) / e !== x) {\n e *= 10;\n p++;\n }\n return p;\n}\nfunction getAngleFromPoint(centrePoint, anglePoint) {\n const distanceFromXCenter = anglePoint.x - centrePoint.x;\n const distanceFromYCenter = anglePoint.y - centrePoint.y;\n const radialDistanceFromCenter = Math.sqrt(distanceFromXCenter * distanceFromXCenter + distanceFromYCenter * distanceFromYCenter);\n let angle = Math.atan2(distanceFromYCenter, distanceFromXCenter);\n if (angle < (-0.5 * PI)) {\n angle += TAU;\n }\n return {\n angle,\n distance: radialDistanceFromCenter\n };\n}\nfunction distanceBetweenPoints(pt1, pt2) {\n return Math.sqrt(Math.pow(pt2.x - pt1.x, 2) + Math.pow(pt2.y - pt1.y, 2));\n}\nfunction _angleDiff(a, b) {\n return (a - b + PITAU) % TAU - PI;\n}\nfunction _normalizeAngle(a) {\n return (a % TAU + TAU) % TAU;\n}\nfunction _angleBetween(angle, start, end, sameAngleIsFullCircle) {\n const a = _normalizeAngle(angle);\n const s = _normalizeAngle(start);\n const e = _normalizeAngle(end);\n const angleToStart = _normalizeAngle(s - a);\n const angleToEnd = _normalizeAngle(e - a);\n const startToAngle = _normalizeAngle(a - s);\n const endToAngle = _normalizeAngle(a - e);\n return a === s || a === e || (sameAngleIsFullCircle && s === e)\n || (angleToStart > angleToEnd && startToAngle < endToAngle);\n}\nfunction _limitValue(value, min, max) {\n return Math.max(min, Math.min(max, value));\n}\nfunction _int16Range(value) {\n return _limitValue(value, -32768, 32767);\n}\nfunction _isBetween(value, start, end, epsilon = 1e-6) {\n return value >= Math.min(start, end) - epsilon && value <= Math.max(start, end) + epsilon;\n}\n\nfunction _lookup(table, value, cmp) {\n cmp = cmp || ((index) => table[index] < value);\n let hi = table.length - 1;\n let lo = 0;\n let mid;\n while (hi - lo > 1) {\n mid = (lo + hi) >> 1;\n if (cmp(mid)) {\n lo = mid;\n } else {\n hi = mid;\n }\n }\n return {lo, hi};\n}\nconst _lookupByKey = (table, key, value, last) =>\n _lookup(table, value, last\n ? index => table[index][key] <= value\n : index => table[index][key] < value);\nconst _rlookupByKey = (table, key, value) =>\n _lookup(table, value, index => table[index][key] >= value);\nfunction _filterBetween(values, min, max) {\n let start = 0;\n let end = values.length;\n while (start < end && values[start] < min) {\n start++;\n }\n while (end > start && values[end - 1] > max) {\n end--;\n }\n return start > 0 || end < values.length\n ? values.slice(start, end)\n : values;\n}\nconst arrayEvents = ['push', 'pop', 'shift', 'splice', 'unshift'];\nfunction listenArrayEvents(array, listener) {\n if (array._chartjs) {\n array._chartjs.listeners.push(listener);\n return;\n }\n Object.defineProperty(array, '_chartjs', {\n configurable: true,\n enumerable: false,\n value: {\n listeners: [listener]\n }\n });\n arrayEvents.forEach((key) => {\n const method = '_onData' + _capitalize(key);\n const base = array[key];\n Object.defineProperty(array, key, {\n configurable: true,\n enumerable: false,\n value(...args) {\n const res = base.apply(this, args);\n array._chartjs.listeners.forEach((object) => {\n if (typeof object[method] === 'function') {\n object[method](...args);\n }\n });\n return res;\n }\n });\n });\n}\nfunction unlistenArrayEvents(array, listener) {\n const stub = array._chartjs;\n if (!stub) {\n return;\n }\n const listeners = stub.listeners;\n const index = listeners.indexOf(listener);\n if (index !== -1) {\n listeners.splice(index, 1);\n }\n if (listeners.length > 0) {\n return;\n }\n arrayEvents.forEach((key) => {\n delete array[key];\n });\n delete array._chartjs;\n}\nfunction _arrayUnique(items) {\n const set = new Set();\n let i, ilen;\n for (i = 0, ilen = items.length; i < ilen; ++i) {\n set.add(items[i]);\n }\n if (set.size === ilen) {\n return items;\n }\n return Array.from(set);\n}\n\nfunction fontString(pixelSize, fontStyle, fontFamily) {\n return fontStyle + ' ' + pixelSize + 'px ' + fontFamily;\n}\nconst requestAnimFrame = (function() {\n if (typeof window === 'undefined') {\n return function(callback) {\n return callback();\n };\n }\n return window.requestAnimationFrame;\n}());\nfunction throttled(fn, thisArg, updateFn) {\n const updateArgs = updateFn || ((args) => Array.prototype.slice.call(args));\n let ticking = false;\n let args = [];\n return function(...rest) {\n args = updateArgs(rest);\n if (!ticking) {\n ticking = true;\n requestAnimFrame.call(window, () => {\n ticking = false;\n fn.apply(thisArg, args);\n });\n }\n };\n}\nfunction debounce(fn, delay) {\n let timeout;\n return function(...args) {\n if (delay) {\n clearTimeout(timeout);\n timeout = setTimeout(fn, delay, args);\n } else {\n fn.apply(this, args);\n }\n return delay;\n };\n}\nconst _toLeftRightCenter = (align) => align === 'start' ? 'left' : align === 'end' ? 'right' : 'center';\nconst _alignStartEnd = (align, start, end) => align === 'start' ? start : align === 'end' ? end : (start + end) / 2;\nconst _textX = (align, left, right, rtl) => {\n const check = rtl ? 'left' : 'right';\n return align === check ? right : align === 'center' ? (left + right) / 2 : left;\n};\nfunction _getStartAndCountOfVisiblePoints(meta, points, animationsDisabled) {\n const pointCount = points.length;\n let start = 0;\n let count = pointCount;\n if (meta._sorted) {\n const {iScale, _parsed} = meta;\n const axis = iScale.axis;\n const {min, max, minDefined, maxDefined} = iScale.getUserBounds();\n if (minDefined) {\n start = _limitValue(Math.min(\n _lookupByKey(_parsed, iScale.axis, min).lo,\n animationsDisabled ? pointCount : _lookupByKey(points, axis, iScale.getPixelForValue(min)).lo),\n 0, pointCount - 1);\n }\n if (maxDefined) {\n count = _limitValue(Math.max(\n _lookupByKey(_parsed, iScale.axis, max, true).hi + 1,\n animationsDisabled ? 0 : _lookupByKey(points, axis, iScale.getPixelForValue(max), true).hi + 1),\n start, pointCount) - start;\n } else {\n count = pointCount - start;\n }\n }\n return {start, count};\n}\nfunction _scaleRangesChanged(meta) {\n const {xScale, yScale, _scaleRanges} = meta;\n const newRanges = {\n xmin: xScale.min,\n xmax: xScale.max,\n ymin: yScale.min,\n ymax: yScale.max\n };\n if (!_scaleRanges) {\n meta._scaleRanges = newRanges;\n return true;\n }\n const changed = _scaleRanges.xmin !== xScale.min\n\t\t|| _scaleRanges.xmax !== xScale.max\n\t\t|| _scaleRanges.ymin !== yScale.min\n\t\t|| _scaleRanges.ymax !== yScale.max;\n Object.assign(_scaleRanges, newRanges);\n return changed;\n}\n\nconst atEdge = (t) => t === 0 || t === 1;\nconst elasticIn = (t, s, p) => -(Math.pow(2, 10 * (t -= 1)) * Math.sin((t - s) * TAU / p));\nconst elasticOut = (t, s, p) => Math.pow(2, -10 * t) * Math.sin((t - s) * TAU / p) + 1;\nconst effects = {\n linear: t => t,\n easeInQuad: t => t * t,\n easeOutQuad: t => -t * (t - 2),\n easeInOutQuad: t => ((t /= 0.5) < 1)\n ? 0.5 * t * t\n : -0.5 * ((--t) * (t - 2) - 1),\n easeInCubic: t => t * t * t,\n easeOutCubic: t => (t -= 1) * t * t + 1,\n easeInOutCubic: t => ((t /= 0.5) < 1)\n ? 0.5 * t * t * t\n : 0.5 * ((t -= 2) * t * t + 2),\n easeInQuart: t => t * t * t * t,\n easeOutQuart: t => -((t -= 1) * t * t * t - 1),\n easeInOutQuart: t => ((t /= 0.5) < 1)\n ? 0.5 * t * t * t * t\n : -0.5 * ((t -= 2) * t * t * t - 2),\n easeInQuint: t => t * t * t * t * t,\n easeOutQuint: t => (t -= 1) * t * t * t * t + 1,\n easeInOutQuint: t => ((t /= 0.5) < 1)\n ? 0.5 * t * t * t * t * t\n : 0.5 * ((t -= 2) * t * t * t * t + 2),\n easeInSine: t => -Math.cos(t * HALF_PI) + 1,\n easeOutSine: t => Math.sin(t * HALF_PI),\n easeInOutSine: t => -0.5 * (Math.cos(PI * t) - 1),\n easeInExpo: t => (t === 0) ? 0 : Math.pow(2, 10 * (t - 1)),\n easeOutExpo: t => (t === 1) ? 1 : -Math.pow(2, -10 * t) + 1,\n easeInOutExpo: t => atEdge(t) ? t : t < 0.5\n ? 0.5 * Math.pow(2, 10 * (t * 2 - 1))\n : 0.5 * (-Math.pow(2, -10 * (t * 2 - 1)) + 2),\n easeInCirc: t => (t >= 1) ? t : -(Math.sqrt(1 - t * t) - 1),\n easeOutCirc: t => Math.sqrt(1 - (t -= 1) * t),\n easeInOutCirc: t => ((t /= 0.5) < 1)\n ? -0.5 * (Math.sqrt(1 - t * t) - 1)\n : 0.5 * (Math.sqrt(1 - (t -= 2) * t) + 1),\n easeInElastic: t => atEdge(t) ? t : elasticIn(t, 0.075, 0.3),\n easeOutElastic: t => atEdge(t) ? t : elasticOut(t, 0.075, 0.3),\n easeInOutElastic(t) {\n const s = 0.1125;\n const p = 0.45;\n return atEdge(t) ? t :\n t < 0.5\n ? 0.5 * elasticIn(t * 2, s, p)\n : 0.5 + 0.5 * elasticOut(t * 2 - 1, s, p);\n },\n easeInBack(t) {\n const s = 1.70158;\n return t * t * ((s + 1) * t - s);\n },\n easeOutBack(t) {\n const s = 1.70158;\n return (t -= 1) * t * ((s + 1) * t + s) + 1;\n },\n easeInOutBack(t) {\n let s = 1.70158;\n if ((t /= 0.5) < 1) {\n return 0.5 * (t * t * (((s *= (1.525)) + 1) * t - s));\n }\n return 0.5 * ((t -= 2) * t * (((s *= (1.525)) + 1) * t + s) + 2);\n },\n easeInBounce: t => 1 - effects.easeOutBounce(1 - t),\n easeOutBounce(t) {\n const m = 7.5625;\n const d = 2.75;\n if (t < (1 / d)) {\n return m * t * t;\n }\n if (t < (2 / d)) {\n return m * (t -= (1.5 / d)) * t + 0.75;\n }\n if (t < (2.5 / d)) {\n return m * (t -= (2.25 / d)) * t + 0.9375;\n }\n return m * (t -= (2.625 / d)) * t + 0.984375;\n },\n easeInOutBounce: t => (t < 0.5)\n ? effects.easeInBounce(t * 2) * 0.5\n : effects.easeOutBounce(t * 2 - 1) * 0.5 + 0.5,\n};\n\n/*!\n * @kurkle/color v0.2.1\n * https://github.com/kurkle/color#readme\n * (c) 2022 Jukka Kurkela\n * Released under the MIT License\n */\nfunction round(v) {\n return v + 0.5 | 0;\n}\nconst lim = (v, l, h) => Math.max(Math.min(v, h), l);\nfunction p2b(v) {\n return lim(round(v * 2.55), 0, 255);\n}\nfunction n2b(v) {\n return lim(round(v * 255), 0, 255);\n}\nfunction b2n(v) {\n return lim(round(v / 2.55) / 100, 0, 1);\n}\nfunction n2p(v) {\n return lim(round(v * 100), 0, 100);\n}\nconst map$1 = {0: 0, 1: 1, 2: 2, 3: 3, 4: 4, 5: 5, 6: 6, 7: 7, 8: 8, 9: 9, A: 10, B: 11, C: 12, D: 13, E: 14, F: 15, a: 10, b: 11, c: 12, d: 13, e: 14, f: 15};\nconst hex = [...'0123456789ABCDEF'];\nconst h1 = b => hex[b & 0xF];\nconst h2 = b => hex[(b & 0xF0) >> 4] + hex[b & 0xF];\nconst eq = b => ((b & 0xF0) >> 4) === (b & 0xF);\nconst isShort = v => eq(v.r) && eq(v.g) && eq(v.b) && eq(v.a);\nfunction hexParse(str) {\n var len = str.length;\n var ret;\n if (str[0] === '#') {\n if (len === 4 || len === 5) {\n ret = {\n r: 255 & map$1[str[1]] * 17,\n g: 255 & map$1[str[2]] * 17,\n b: 255 & map$1[str[3]] * 17,\n a: len === 5 ? map$1[str[4]] * 17 : 255\n };\n } else if (len === 7 || len === 9) {\n ret = {\n r: map$1[str[1]] << 4 | map$1[str[2]],\n g: map$1[str[3]] << 4 | map$1[str[4]],\n b: map$1[str[5]] << 4 | map$1[str[6]],\n a: len === 9 ? (map$1[str[7]] << 4 | map$1[str[8]]) : 255\n };\n }\n }\n return ret;\n}\nconst alpha = (a, f) => a < 255 ? f(a) : '';\nfunction hexString(v) {\n var f = isShort(v) ? h1 : h2;\n return v\n ? '#' + f(v.r) + f(v.g) + f(v.b) + alpha(v.a, f)\n : undefined;\n}\nconst HUE_RE = /^(hsla?|hwb|hsv)\\(\\s*([-+.e\\d]+)(?:deg)?[\\s,]+([-+.e\\d]+)%[\\s,]+([-+.e\\d]+)%(?:[\\s,]+([-+.e\\d]+)(%)?)?\\s*\\)$/;\nfunction hsl2rgbn(h, s, l) {\n const a = s * Math.min(l, 1 - l);\n const f = (n, k = (n + h / 30) % 12) => l - a * Math.max(Math.min(k - 3, 9 - k, 1), -1);\n return [f(0), f(8), f(4)];\n}\nfunction hsv2rgbn(h, s, v) {\n const f = (n, k = (n + h / 60) % 6) => v - v * s * Math.max(Math.min(k, 4 - k, 1), 0);\n return [f(5), f(3), f(1)];\n}\nfunction hwb2rgbn(h, w, b) {\n const rgb = hsl2rgbn(h, 1, 0.5);\n let i;\n if (w + b > 1) {\n i = 1 / (w + b);\n w *= i;\n b *= i;\n }\n for (i = 0; i < 3; i++) {\n rgb[i] *= 1 - w - b;\n rgb[i] += w;\n }\n return rgb;\n}\nfunction hueValue(r, g, b, d, max) {\n if (r === max) {\n return ((g - b) / d) + (g < b ? 6 : 0);\n }\n if (g === max) {\n return (b - r) / d + 2;\n }\n return (r - g) / d + 4;\n}\nfunction rgb2hsl(v) {\n const range = 255;\n const r = v.r / range;\n const g = v.g / range;\n const b = v.b / range;\n const max = Math.max(r, g, b);\n const min = Math.min(r, g, b);\n const l = (max + min) / 2;\n let h, s, d;\n if (max !== min) {\n d = max - min;\n s = l > 0.5 ? d / (2 - max - min) : d / (max + min);\n h = hueValue(r, g, b, d, max);\n h = h * 60 + 0.5;\n }\n return [h | 0, s || 0, l];\n}\nfunction calln(f, a, b, c) {\n return (\n Array.isArray(a)\n ? f(a[0], a[1], a[2])\n : f(a, b, c)\n ).map(n2b);\n}\nfunction hsl2rgb(h, s, l) {\n return calln(hsl2rgbn, h, s, l);\n}\nfunction hwb2rgb(h, w, b) {\n return calln(hwb2rgbn, h, w, b);\n}\nfunction hsv2rgb(h, s, v) {\n return calln(hsv2rgbn, h, s, v);\n}\nfunction hue(h) {\n return (h % 360 + 360) % 360;\n}\nfunction hueParse(str) {\n const m = HUE_RE.exec(str);\n let a = 255;\n let v;\n if (!m) {\n return;\n }\n if (m[5] !== v) {\n a = m[6] ? p2b(+m[5]) : n2b(+m[5]);\n }\n const h = hue(+m[2]);\n const p1 = +m[3] / 100;\n const p2 = +m[4] / 100;\n if (m[1] === 'hwb') {\n v = hwb2rgb(h, p1, p2);\n } else if (m[1] === 'hsv') {\n v = hsv2rgb(h, p1, p2);\n } else {\n v = hsl2rgb(h, p1, p2);\n }\n return {\n r: v[0],\n g: v[1],\n b: v[2],\n a: a\n };\n}\nfunction rotate(v, deg) {\n var h = rgb2hsl(v);\n h[0] = hue(h[0] + deg);\n h = hsl2rgb(h);\n v.r = h[0];\n v.g = h[1];\n v.b = h[2];\n}\nfunction hslString(v) {\n if (!v) {\n return;\n }\n const a = rgb2hsl(v);\n const h = a[0];\n const s = n2p(a[1]);\n const l = n2p(a[2]);\n return v.a < 255\n ? `hsla(${h}, ${s}%, ${l}%, ${b2n(v.a)})`\n : `hsl(${h}, ${s}%, ${l}%)`;\n}\nconst map = {\n x: 'dark',\n Z: 'light',\n Y: 're',\n X: 'blu',\n W: 'gr',\n V: 'medium',\n U: 'slate',\n A: 'ee',\n T: 'ol',\n S: 'or',\n B: 'ra',\n C: 'lateg',\n D: 'ights',\n R: 'in',\n Q: 'turquois',\n E: 'hi',\n P: 'ro',\n O: 'al',\n N: 'le',\n M: 'de',\n L: 'yello',\n F: 'en',\n K: 'ch',\n G: 'arks',\n H: 'ea',\n I: 'ightg',\n J: 'wh'\n};\nconst names$1 = {\n OiceXe: 'f0f8ff',\n antiquewEte: 'faebd7',\n aqua: 'ffff',\n aquamarRe: '7fffd4',\n azuY: 'f0ffff',\n beige: 'f5f5dc',\n bisque: 'ffe4c4',\n black: '0',\n blanKedOmond: 'ffebcd',\n Xe: 'ff',\n XeviTet: '8a2be2',\n bPwn: 'a52a2a',\n burlywood: 'deb887',\n caMtXe: '5f9ea0',\n KartYuse: '7fff00',\n KocTate: 'd2691e',\n cSO: 'ff7f50',\n cSnflowerXe: '6495ed',\n cSnsilk: 'fff8dc',\n crimson: 'dc143c',\n cyan: 'ffff',\n xXe: '8b',\n xcyan: '8b8b',\n xgTMnPd: 'b8860b',\n xWay: 'a9a9a9',\n xgYF: '6400',\n xgYy: 'a9a9a9',\n xkhaki: 'bdb76b',\n xmagFta: '8b008b',\n xTivegYF: '556b2f',\n xSange: 'ff8c00',\n xScEd: '9932cc',\n xYd: '8b0000',\n xsOmon: 'e9967a',\n xsHgYF: '8fbc8f',\n xUXe: '483d8b',\n xUWay: '2f4f4f',\n xUgYy: '2f4f4f',\n xQe: 'ced1',\n xviTet: '9400d3',\n dAppRk: 'ff1493',\n dApskyXe: 'bfff',\n dimWay: '696969',\n dimgYy: '696969',\n dodgerXe: '1e90ff',\n fiYbrick: 'b22222',\n flSOwEte: 'fffaf0',\n foYstWAn: '228b22',\n fuKsia: 'ff00ff',\n gaRsbSo: 'dcdcdc',\n ghostwEte: 'f8f8ff',\n gTd: 'ffd700',\n gTMnPd: 'daa520',\n Way: '808080',\n gYF: '8000',\n gYFLw: 'adff2f',\n gYy: '808080',\n honeyMw: 'f0fff0',\n hotpRk: 'ff69b4',\n RdianYd: 'cd5c5c',\n Rdigo: '4b0082',\n ivSy: 'fffff0',\n khaki: 'f0e68c',\n lavFMr: 'e6e6fa',\n lavFMrXsh: 'fff0f5',\n lawngYF: '7cfc00',\n NmoncEffon: 'fffacd',\n ZXe: 'add8e6',\n ZcSO: 'f08080',\n Zcyan: 'e0ffff',\n ZgTMnPdLw: 'fafad2',\n ZWay: 'd3d3d3',\n ZgYF: '90ee90',\n ZgYy: 'd3d3d3',\n ZpRk: 'ffb6c1',\n ZsOmon: 'ffa07a',\n ZsHgYF: '20b2aa',\n ZskyXe: '87cefa',\n ZUWay: '778899',\n ZUgYy: '778899',\n ZstAlXe: 'b0c4de',\n ZLw: 'ffffe0',\n lime: 'ff00',\n limegYF: '32cd32',\n lRF: 'faf0e6',\n magFta: 'ff00ff',\n maPon: '800000',\n VaquamarRe: '66cdaa',\n VXe: 'cd',\n VScEd: 'ba55d3',\n VpurpN: '9370db',\n VsHgYF: '3cb371',\n VUXe: '7b68ee',\n VsprRggYF: 'fa9a',\n VQe: '48d1cc',\n VviTetYd: 'c71585',\n midnightXe: '191970',\n mRtcYam: 'f5fffa',\n mistyPse: 'ffe4e1',\n moccasR: 'ffe4b5',\n navajowEte: 'ffdead',\n navy: '80',\n Tdlace: 'fdf5e6',\n Tive: '808000',\n TivedBb: '6b8e23',\n Sange: 'ffa500',\n SangeYd: 'ff4500',\n ScEd: 'da70d6',\n pOegTMnPd: 'eee8aa',\n pOegYF: '98fb98',\n pOeQe: 'afeeee',\n pOeviTetYd: 'db7093',\n papayawEp: 'ffefd5',\n pHKpuff: 'ffdab9',\n peru: 'cd853f',\n pRk: 'ffc0cb',\n plum: 'dda0dd',\n powMrXe: 'b0e0e6',\n purpN: '800080',\n YbeccapurpN: '663399',\n Yd: 'ff0000',\n Psybrown: 'bc8f8f',\n PyOXe: '4169e1',\n saddNbPwn: '8b4513',\n sOmon: 'fa8072',\n sandybPwn: 'f4a460',\n sHgYF: '2e8b57',\n sHshell: 'fff5ee',\n siFna: 'a0522d',\n silver: 'c0c0c0',\n skyXe: '87ceeb',\n UXe: '6a5acd',\n UWay: '708090',\n UgYy: '708090',\n snow: 'fffafa',\n sprRggYF: 'ff7f',\n stAlXe: '4682b4',\n tan: 'd2b48c',\n teO: '8080',\n tEstN: 'd8bfd8',\n tomato: 'ff6347',\n Qe: '40e0d0',\n viTet: 'ee82ee',\n JHt: 'f5deb3',\n wEte: 'ffffff',\n wEtesmoke: 'f5f5f5',\n Lw: 'ffff00',\n LwgYF: '9acd32'\n};\nfunction unpack() {\n const unpacked = {};\n const keys = Object.keys(names$1);\n const tkeys = Object.keys(map);\n let i, j, k, ok, nk;\n for (i = 0; i < keys.length; i++) {\n ok = nk = keys[i];\n for (j = 0; j < tkeys.length; j++) {\n k = tkeys[j];\n nk = nk.replace(k, map[k]);\n }\n k = parseInt(names$1[ok], 16);\n unpacked[nk] = [k >> 16 & 0xFF, k >> 8 & 0xFF, k & 0xFF];\n }\n return unpacked;\n}\nlet names;\nfunction nameParse(str) {\n if (!names) {\n names = unpack();\n names.transparent = [0, 0, 0, 0];\n }\n const a = names[str.toLowerCase()];\n return a && {\n r: a[0],\n g: a[1],\n b: a[2],\n a: a.length === 4 ? a[3] : 255\n };\n}\nconst RGB_RE = /^rgba?\\(\\s*([-+.\\d]+)(%)?[\\s,]+([-+.e\\d]+)(%)?[\\s,]+([-+.e\\d]+)(%)?(?:[\\s,/]+([-+.e\\d]+)(%)?)?\\s*\\)$/;\nfunction rgbParse(str) {\n const m = RGB_RE.exec(str);\n let a = 255;\n let r, g, b;\n if (!m) {\n return;\n }\n if (m[7] !== r) {\n const v = +m[7];\n a = m[8] ? p2b(v) : lim(v * 255, 0, 255);\n }\n r = +m[1];\n g = +m[3];\n b = +m[5];\n r = 255 & (m[2] ? p2b(r) : lim(r, 0, 255));\n g = 255 & (m[4] ? p2b(g) : lim(g, 0, 255));\n b = 255 & (m[6] ? p2b(b) : lim(b, 0, 255));\n return {\n r: r,\n g: g,\n b: b,\n a: a\n };\n}\nfunction rgbString(v) {\n return v && (\n v.a < 255\n ? `rgba(${v.r}, ${v.g}, ${v.b}, ${b2n(v.a)})`\n : `rgb(${v.r}, ${v.g}, ${v.b})`\n );\n}\nconst to = v => v <= 0.0031308 ? v * 12.92 : Math.pow(v, 1.0 / 2.4) * 1.055 - 0.055;\nconst from = v => v <= 0.04045 ? v / 12.92 : Math.pow((v + 0.055) / 1.055, 2.4);\nfunction interpolate(rgb1, rgb2, t) {\n const r = from(b2n(rgb1.r));\n const g = from(b2n(rgb1.g));\n const b = from(b2n(rgb1.b));\n return {\n r: n2b(to(r + t * (from(b2n(rgb2.r)) - r))),\n g: n2b(to(g + t * (from(b2n(rgb2.g)) - g))),\n b: n2b(to(b + t * (from(b2n(rgb2.b)) - b))),\n a: rgb1.a + t * (rgb2.a - rgb1.a)\n };\n}\nfunction modHSL(v, i, ratio) {\n if (v) {\n let tmp = rgb2hsl(v);\n tmp[i] = Math.max(0, Math.min(tmp[i] + tmp[i] * ratio, i === 0 ? 360 : 1));\n tmp = hsl2rgb(tmp);\n v.r = tmp[0];\n v.g = tmp[1];\n v.b = tmp[2];\n }\n}\nfunction clone(v, proto) {\n return v ? Object.assign(proto || {}, v) : v;\n}\nfunction fromObject(input) {\n var v = {r: 0, g: 0, b: 0, a: 255};\n if (Array.isArray(input)) {\n if (input.length >= 3) {\n v = {r: input[0], g: input[1], b: input[2], a: 255};\n if (input.length > 3) {\n v.a = n2b(input[3]);\n }\n }\n } else {\n v = clone(input, {r: 0, g: 0, b: 0, a: 1});\n v.a = n2b(v.a);\n }\n return v;\n}\nfunction functionParse(str) {\n if (str.charAt(0) === 'r') {\n return rgbParse(str);\n }\n return hueParse(str);\n}\nclass Color {\n constructor(input) {\n if (input instanceof Color) {\n return input;\n }\n const type = typeof input;\n let v;\n if (type === 'object') {\n v = fromObject(input);\n } else if (type === 'string') {\n v = hexParse(input) || nameParse(input) || functionParse(input);\n }\n this._rgb = v;\n this._valid = !!v;\n }\n get valid() {\n return this._valid;\n }\n get rgb() {\n var v = clone(this._rgb);\n if (v) {\n v.a = b2n(v.a);\n }\n return v;\n }\n set rgb(obj) {\n this._rgb = fromObject(obj);\n }\n rgbString() {\n return this._valid ? rgbString(this._rgb) : undefined;\n }\n hexString() {\n return this._valid ? hexString(this._rgb) : undefined;\n }\n hslString() {\n return this._valid ? hslString(this._rgb) : undefined;\n }\n mix(color, weight) {\n if (color) {\n const c1 = this.rgb;\n const c2 = color.rgb;\n let w2;\n const p = weight === w2 ? 0.5 : weight;\n const w = 2 * p - 1;\n const a = c1.a - c2.a;\n const w1 = ((w * a === -1 ? w : (w + a) / (1 + w * a)) + 1) / 2.0;\n w2 = 1 - w1;\n c1.r = 0xFF & w1 * c1.r + w2 * c2.r + 0.5;\n c1.g = 0xFF & w1 * c1.g + w2 * c2.g + 0.5;\n c1.b = 0xFF & w1 * c1.b + w2 * c2.b + 0.5;\n c1.a = p * c1.a + (1 - p) * c2.a;\n this.rgb = c1;\n }\n return this;\n }\n interpolate(color, t) {\n if (color) {\n this._rgb = interpolate(this._rgb, color._rgb, t);\n }\n return this;\n }\n clone() {\n return new Color(this.rgb);\n }\n alpha(a) {\n this._rgb.a = n2b(a);\n return this;\n }\n clearer(ratio) {\n const rgb = this._rgb;\n rgb.a *= 1 - ratio;\n return this;\n }\n greyscale() {\n const rgb = this._rgb;\n const val = round(rgb.r * 0.3 + rgb.g * 0.59 + rgb.b * 0.11);\n rgb.r = rgb.g = rgb.b = val;\n return this;\n }\n opaquer(ratio) {\n const rgb = this._rgb;\n rgb.a *= 1 + ratio;\n return this;\n }\n negate() {\n const v = this._rgb;\n v.r = 255 - v.r;\n v.g = 255 - v.g;\n v.b = 255 - v.b;\n return this;\n }\n lighten(ratio) {\n modHSL(this._rgb, 2, ratio);\n return this;\n }\n darken(ratio) {\n modHSL(this._rgb, 2, -ratio);\n return this;\n }\n saturate(ratio) {\n modHSL(this._rgb, 1, ratio);\n return this;\n }\n desaturate(ratio) {\n modHSL(this._rgb, 1, -ratio);\n return this;\n }\n rotate(deg) {\n rotate(this._rgb, deg);\n return this;\n }\n}\nfunction index_esm(input) {\n return new Color(input);\n}\n\nfunction isPatternOrGradient(value) {\n if (value && typeof value === 'object') {\n const type = value.toString();\n return type === '[object CanvasPattern]' || type === '[object CanvasGradient]';\n }\n return false;\n}\nfunction color(value) {\n return isPatternOrGradient(value) ? value : index_esm(value);\n}\nfunction getHoverColor(value) {\n return isPatternOrGradient(value)\n ? value\n : index_esm(value).saturate(0.5).darken(0.1).hexString();\n}\n\nconst overrides = Object.create(null);\nconst descriptors = Object.create(null);\nfunction getScope$1(node, key) {\n if (!key) {\n return node;\n }\n const keys = key.split('.');\n for (let i = 0, n = keys.length; i < n; ++i) {\n const k = keys[i];\n node = node[k] || (node[k] = Object.create(null));\n }\n return node;\n}\nfunction set(root, scope, values) {\n if (typeof scope === 'string') {\n return merge(getScope$1(root, scope), values);\n }\n return merge(getScope$1(root, ''), scope);\n}\nclass Defaults {\n constructor(_descriptors) {\n this.animation = undefined;\n this.backgroundColor = 'rgba(0,0,0,0.1)';\n this.borderColor = 'rgba(0,0,0,0.1)';\n this.color = '#666';\n this.datasets = {};\n this.devicePixelRatio = (context) => context.chart.platform.getDevicePixelRatio();\n this.elements = {};\n this.events = [\n 'mousemove',\n 'mouseout',\n 'click',\n 'touchstart',\n 'touchmove'\n ];\n this.font = {\n family: \"'Helvetica Neue', 'Helvetica', 'Arial', sans-serif\",\n size: 12,\n style: 'normal',\n lineHeight: 1.2,\n weight: null\n };\n this.hover = {};\n this.hoverBackgroundColor = (ctx, options) => getHoverColor(options.backgroundColor);\n this.hoverBorderColor = (ctx, options) => getHoverColor(options.borderColor);\n this.hoverColor = (ctx, options) => getHoverColor(options.color);\n this.indexAxis = 'x';\n this.interaction = {\n mode: 'nearest',\n intersect: true,\n includeInvisible: false\n };\n this.maintainAspectRatio = true;\n this.onHover = null;\n this.onClick = null;\n this.parsing = true;\n this.plugins = {};\n this.responsive = true;\n this.scale = undefined;\n this.scales = {};\n this.showLine = true;\n this.drawActiveElementsOnTop = true;\n this.describe(_descriptors);\n }\n set(scope, values) {\n return set(this, scope, values);\n }\n get(scope) {\n return getScope$1(this, scope);\n }\n describe(scope, values) {\n return set(descriptors, scope, values);\n }\n override(scope, values) {\n return set(overrides, scope, values);\n }\n route(scope, name, targetScope, targetName) {\n const scopeObject = getScope$1(this, scope);\n const targetScopeObject = getScope$1(this, targetScope);\n const privateName = '_' + name;\n Object.defineProperties(scopeObject, {\n [privateName]: {\n value: scopeObject[name],\n writable: true\n },\n [name]: {\n enumerable: true,\n get() {\n const local = this[privateName];\n const target = targetScopeObject[targetName];\n if (isObject(local)) {\n return Object.assign({}, target, local);\n }\n return valueOrDefault(local, target);\n },\n set(value) {\n this[privateName] = value;\n }\n }\n });\n }\n}\nvar defaults = new Defaults({\n _scriptable: (name) => !name.startsWith('on'),\n _indexable: (name) => name !== 'events',\n hover: {\n _fallback: 'interaction'\n },\n interaction: {\n _scriptable: false,\n _indexable: false,\n }\n});\n\nfunction toFontString(font) {\n if (!font || isNullOrUndef(font.size) || isNullOrUndef(font.family)) {\n return null;\n }\n return (font.style ? font.style + ' ' : '')\n\t\t+ (font.weight ? font.weight + ' ' : '')\n\t\t+ font.size + 'px '\n\t\t+ font.family;\n}\nfunction _measureText(ctx, data, gc, longest, string) {\n let textWidth = data[string];\n if (!textWidth) {\n textWidth = data[string] = ctx.measureText(string).width;\n gc.push(string);\n }\n if (textWidth > longest) {\n longest = textWidth;\n }\n return longest;\n}\nfunction _longestText(ctx, font, arrayOfThings, cache) {\n cache = cache || {};\n let data = cache.data = cache.data || {};\n let gc = cache.garbageCollect = cache.garbageCollect || [];\n if (cache.font !== font) {\n data = cache.data = {};\n gc = cache.garbageCollect = [];\n cache.font = font;\n }\n ctx.save();\n ctx.font = font;\n let longest = 0;\n const ilen = arrayOfThings.length;\n let i, j, jlen, thing, nestedThing;\n for (i = 0; i < ilen; i++) {\n thing = arrayOfThings[i];\n if (thing !== undefined && thing !== null && isArray(thing) !== true) {\n longest = _measureText(ctx, data, gc, longest, thing);\n } else if (isArray(thing)) {\n for (j = 0, jlen = thing.length; j < jlen; j++) {\n nestedThing = thing[j];\n if (nestedThing !== undefined && nestedThing !== null && !isArray(nestedThing)) {\n longest = _measureText(ctx, data, gc, longest, nestedThing);\n }\n }\n }\n }\n ctx.restore();\n const gcLen = gc.length / 2;\n if (gcLen > arrayOfThings.length) {\n for (i = 0; i < gcLen; i++) {\n delete data[gc[i]];\n }\n gc.splice(0, gcLen);\n }\n return longest;\n}\nfunction _alignPixel(chart, pixel, width) {\n const devicePixelRatio = chart.currentDevicePixelRatio;\n const halfWidth = width !== 0 ? Math.max(width / 2, 0.5) : 0;\n return Math.round((pixel - halfWidth) * devicePixelRatio) / devicePixelRatio + halfWidth;\n}\nfunction clearCanvas(canvas, ctx) {\n ctx = ctx || canvas.getContext('2d');\n ctx.save();\n ctx.resetTransform();\n ctx.clearRect(0, 0, canvas.width, canvas.height);\n ctx.restore();\n}\nfunction drawPoint(ctx, options, x, y) {\n drawPointLegend(ctx, options, x, y, null);\n}\nfunction drawPointLegend(ctx, options, x, y, w) {\n let type, xOffset, yOffset, size, cornerRadius, width;\n const style = options.pointStyle;\n const rotation = options.rotation;\n const radius = options.radius;\n let rad = (rotation || 0) * RAD_PER_DEG;\n if (style && typeof style === 'object') {\n type = style.toString();\n if (type === '[object HTMLImageElement]' || type === '[object HTMLCanvasElement]') {\n ctx.save();\n ctx.translate(x, y);\n ctx.rotate(rad);\n ctx.drawImage(style, -style.width / 2, -style.height / 2, style.width, style.height);\n ctx.restore();\n return;\n }\n }\n if (isNaN(radius) || radius <= 0) {\n return;\n }\n ctx.beginPath();\n switch (style) {\n default:\n if (w) {\n ctx.ellipse(x, y, w / 2, radius, 0, 0, TAU);\n } else {\n ctx.arc(x, y, radius, 0, TAU);\n }\n ctx.closePath();\n break;\n case 'triangle':\n ctx.moveTo(x + Math.sin(rad) * radius, y - Math.cos(rad) * radius);\n rad += TWO_THIRDS_PI;\n ctx.lineTo(x + Math.sin(rad) * radius, y - Math.cos(rad) * radius);\n rad += TWO_THIRDS_PI;\n ctx.lineTo(x + Math.sin(rad) * radius, y - Math.cos(rad) * radius);\n ctx.closePath();\n break;\n case 'rectRounded':\n cornerRadius = radius * 0.516;\n size = radius - cornerRadius;\n xOffset = Math.cos(rad + QUARTER_PI) * size;\n yOffset = Math.sin(rad + QUARTER_PI) * size;\n ctx.arc(x - xOffset, y - yOffset, cornerRadius, rad - PI, rad - HALF_PI);\n ctx.arc(x + yOffset, y - xOffset, cornerRadius, rad - HALF_PI, rad);\n ctx.arc(x + xOffset, y + yOffset, cornerRadius, rad, rad + HALF_PI);\n ctx.arc(x - yOffset, y + xOffset, cornerRadius, rad + HALF_PI, rad + PI);\n ctx.closePath();\n break;\n case 'rect':\n if (!rotation) {\n size = Math.SQRT1_2 * radius;\n width = w ? w / 2 : size;\n ctx.rect(x - width, y - size, 2 * width, 2 * size);\n break;\n }\n rad += QUARTER_PI;\n case 'rectRot':\n xOffset = Math.cos(rad) * radius;\n yOffset = Math.sin(rad) * radius;\n ctx.moveTo(x - xOffset, y - yOffset);\n ctx.lineTo(x + yOffset, y - xOffset);\n ctx.lineTo(x + xOffset, y + yOffset);\n ctx.lineTo(x - yOffset, y + xOffset);\n ctx.closePath();\n break;\n case 'crossRot':\n rad += QUARTER_PI;\n case 'cross':\n xOffset = Math.cos(rad) * radius;\n yOffset = Math.sin(rad) * radius;\n ctx.moveTo(x - xOffset, y - yOffset);\n ctx.lineTo(x + xOffset, y + yOffset);\n ctx.moveTo(x + yOffset, y - xOffset);\n ctx.lineTo(x - yOffset, y + xOffset);\n break;\n case 'star':\n xOffset = Math.cos(rad) * radius;\n yOffset = Math.sin(rad) * radius;\n ctx.moveTo(x - xOffset, y - yOffset);\n ctx.lineTo(x + xOffset, y + yOffset);\n ctx.moveTo(x + yOffset, y - xOffset);\n ctx.lineTo(x - yOffset, y + xOffset);\n rad += QUARTER_PI;\n xOffset = Math.cos(rad) * radius;\n yOffset = Math.sin(rad) * radius;\n ctx.moveTo(x - xOffset, y - yOffset);\n ctx.lineTo(x + xOffset, y + yOffset);\n ctx.moveTo(x + yOffset, y - xOffset);\n ctx.lineTo(x - yOffset, y + xOffset);\n break;\n case 'line':\n xOffset = w ? w / 2 : Math.cos(rad) * radius;\n yOffset = Math.sin(rad) * radius;\n ctx.moveTo(x - xOffset, y - yOffset);\n ctx.lineTo(x + xOffset, y + yOffset);\n break;\n case 'dash':\n ctx.moveTo(x, y);\n ctx.lineTo(x + Math.cos(rad) * radius, y + Math.sin(rad) * radius);\n break;\n }\n ctx.fill();\n if (options.borderWidth > 0) {\n ctx.stroke();\n }\n}\nfunction _isPointInArea(point, area, margin) {\n margin = margin || 0.5;\n return !area || (point && point.x > area.left - margin && point.x < area.right + margin &&\n\t\tpoint.y > area.top - margin && point.y < area.bottom + margin);\n}\nfunction clipArea(ctx, area) {\n ctx.save();\n ctx.beginPath();\n ctx.rect(area.left, area.top, area.right - area.left, area.bottom - area.top);\n ctx.clip();\n}\nfunction unclipArea(ctx) {\n ctx.restore();\n}\nfunction _steppedLineTo(ctx, previous, target, flip, mode) {\n if (!previous) {\n return ctx.lineTo(target.x, target.y);\n }\n if (mode === 'middle') {\n const midpoint = (previous.x + target.x) / 2.0;\n ctx.lineTo(midpoint, previous.y);\n ctx.lineTo(midpoint, target.y);\n } else if (mode === 'after' !== !!flip) {\n ctx.lineTo(previous.x, target.y);\n } else {\n ctx.lineTo(target.x, previous.y);\n }\n ctx.lineTo(target.x, target.y);\n}\nfunction _bezierCurveTo(ctx, previous, target, flip) {\n if (!previous) {\n return ctx.lineTo(target.x, target.y);\n }\n ctx.bezierCurveTo(\n flip ? previous.cp1x : previous.cp2x,\n flip ? previous.cp1y : previous.cp2y,\n flip ? target.cp2x : target.cp1x,\n flip ? target.cp2y : target.cp1y,\n target.x,\n target.y);\n}\nfunction renderText(ctx, text, x, y, font, opts = {}) {\n const lines = isArray(text) ? text : [text];\n const stroke = opts.strokeWidth > 0 && opts.strokeColor !== '';\n let i, line;\n ctx.save();\n ctx.font = font.string;\n setRenderOpts(ctx, opts);\n for (i = 0; i < lines.length; ++i) {\n line = lines[i];\n if (stroke) {\n if (opts.strokeColor) {\n ctx.strokeStyle = opts.strokeColor;\n }\n if (!isNullOrUndef(opts.strokeWidth)) {\n ctx.lineWidth = opts.strokeWidth;\n }\n ctx.strokeText(line, x, y, opts.maxWidth);\n }\n ctx.fillText(line, x, y, opts.maxWidth);\n decorateText(ctx, x, y, line, opts);\n y += font.lineHeight;\n }\n ctx.restore();\n}\nfunction setRenderOpts(ctx, opts) {\n if (opts.translation) {\n ctx.translate(opts.translation[0], opts.translation[1]);\n }\n if (!isNullOrUndef(opts.rotation)) {\n ctx.rotate(opts.rotation);\n }\n if (opts.color) {\n ctx.fillStyle = opts.color;\n }\n if (opts.textAlign) {\n ctx.textAlign = opts.textAlign;\n }\n if (opts.textBaseline) {\n ctx.textBaseline = opts.textBaseline;\n }\n}\nfunction decorateText(ctx, x, y, line, opts) {\n if (opts.strikethrough || opts.underline) {\n const metrics = ctx.measureText(line);\n const left = x - metrics.actualBoundingBoxLeft;\n const right = x + metrics.actualBoundingBoxRight;\n const top = y - metrics.actualBoundingBoxAscent;\n const bottom = y + metrics.actualBoundingBoxDescent;\n const yDecoration = opts.strikethrough ? (top + bottom) / 2 : bottom;\n ctx.strokeStyle = ctx.fillStyle;\n ctx.beginPath();\n ctx.lineWidth = opts.decorationWidth || 2;\n ctx.moveTo(left, yDecoration);\n ctx.lineTo(right, yDecoration);\n ctx.stroke();\n }\n}\nfunction addRoundedRectPath(ctx, rect) {\n const {x, y, w, h, radius} = rect;\n ctx.arc(x + radius.topLeft, y + radius.topLeft, radius.topLeft, -HALF_PI, PI, true);\n ctx.lineTo(x, y + h - radius.bottomLeft);\n ctx.arc(x + radius.bottomLeft, y + h - radius.bottomLeft, radius.bottomLeft, PI, HALF_PI, true);\n ctx.lineTo(x + w - radius.bottomRight, y + h);\n ctx.arc(x + w - radius.bottomRight, y + h - radius.bottomRight, radius.bottomRight, HALF_PI, 0, true);\n ctx.lineTo(x + w, y + radius.topRight);\n ctx.arc(x + w - radius.topRight, y + radius.topRight, radius.topRight, 0, -HALF_PI, true);\n ctx.lineTo(x + radius.topLeft, y);\n}\n\nconst LINE_HEIGHT = new RegExp(/^(normal|(\\d+(?:\\.\\d+)?)(px|em|%)?)$/);\nconst FONT_STYLE = new RegExp(/^(normal|italic|initial|inherit|unset|(oblique( -?[0-9]?[0-9]deg)?))$/);\nfunction toLineHeight(value, size) {\n const matches = ('' + value).match(LINE_HEIGHT);\n if (!matches || matches[1] === 'normal') {\n return size * 1.2;\n }\n value = +matches[2];\n switch (matches[3]) {\n case 'px':\n return value;\n case '%':\n value /= 100;\n break;\n }\n return size * value;\n}\nconst numberOrZero = v => +v || 0;\nfunction _readValueToProps(value, props) {\n const ret = {};\n const objProps = isObject(props);\n const keys = objProps ? Object.keys(props) : props;\n const read = isObject(value)\n ? objProps\n ? prop => valueOrDefault(value[prop], value[props[prop]])\n : prop => value[prop]\n : () => value;\n for (const prop of keys) {\n ret[prop] = numberOrZero(read(prop));\n }\n return ret;\n}\nfunction toTRBL(value) {\n return _readValueToProps(value, {top: 'y', right: 'x', bottom: 'y', left: 'x'});\n}\nfunction toTRBLCorners(value) {\n return _readValueToProps(value, ['topLeft', 'topRight', 'bottomLeft', 'bottomRight']);\n}\nfunction toPadding(value) {\n const obj = toTRBL(value);\n obj.width = obj.left + obj.right;\n obj.height = obj.top + obj.bottom;\n return obj;\n}\nfunction toFont(options, fallback) {\n options = options || {};\n fallback = fallback || defaults.font;\n let size = valueOrDefault(options.size, fallback.size);\n if (typeof size === 'string') {\n size = parseInt(size, 10);\n }\n let style = valueOrDefault(options.style, fallback.style);\n if (style && !('' + style).match(FONT_STYLE)) {\n console.warn('Invalid font style specified: \"' + style + '\"');\n style = '';\n }\n const font = {\n family: valueOrDefault(options.family, fallback.family),\n lineHeight: toLineHeight(valueOrDefault(options.lineHeight, fallback.lineHeight), size),\n size,\n style,\n weight: valueOrDefault(options.weight, fallback.weight),\n string: ''\n };\n font.string = toFontString(font);\n return font;\n}\nfunction resolve(inputs, context, index, info) {\n let cacheable = true;\n let i, ilen, value;\n for (i = 0, ilen = inputs.length; i < ilen; ++i) {\n value = inputs[i];\n if (value === undefined) {\n continue;\n }\n if (context !== undefined && typeof value === 'function') {\n value = value(context);\n cacheable = false;\n }\n if (index !== undefined && isArray(value)) {\n value = value[index % value.length];\n cacheable = false;\n }\n if (value !== undefined) {\n if (info && !cacheable) {\n info.cacheable = false;\n }\n return value;\n }\n }\n}\nfunction _addGrace(minmax, grace, beginAtZero) {\n const {min, max} = minmax;\n const change = toDimension(grace, (max - min) / 2);\n const keepZero = (value, add) => beginAtZero && value === 0 ? 0 : value + add;\n return {\n min: keepZero(min, -Math.abs(change)),\n max: keepZero(max, change)\n };\n}\nfunction createContext(parentContext, context) {\n return Object.assign(Object.create(parentContext), context);\n}\n\nfunction _createResolver(scopes, prefixes = [''], rootScopes = scopes, fallback, getTarget = () => scopes[0]) {\n if (!defined(fallback)) {\n fallback = _resolve('_fallback', scopes);\n }\n const cache = {\n [Symbol.toStringTag]: 'Object',\n _cacheable: true,\n _scopes: scopes,\n _rootScopes: rootScopes,\n _fallback: fallback,\n _getTarget: getTarget,\n override: (scope) => _createResolver([scope, ...scopes], prefixes, rootScopes, fallback),\n };\n return new Proxy(cache, {\n deleteProperty(target, prop) {\n delete target[prop];\n delete target._keys;\n delete scopes[0][prop];\n return true;\n },\n get(target, prop) {\n return _cached(target, prop,\n () => _resolveWithPrefixes(prop, prefixes, scopes, target));\n },\n getOwnPropertyDescriptor(target, prop) {\n return Reflect.getOwnPropertyDescriptor(target._scopes[0], prop);\n },\n getPrototypeOf() {\n return Reflect.getPrototypeOf(scopes[0]);\n },\n has(target, prop) {\n return getKeysFromAllScopes(target).includes(prop);\n },\n ownKeys(target) {\n return getKeysFromAllScopes(target);\n },\n set(target, prop, value) {\n const storage = target._storage || (target._storage = getTarget());\n target[prop] = storage[prop] = value;\n delete target._keys;\n return true;\n }\n });\n}\nfunction _attachContext(proxy, context, subProxy, descriptorDefaults) {\n const cache = {\n _cacheable: false,\n _proxy: proxy,\n _context: context,\n _subProxy: subProxy,\n _stack: new Set(),\n _descriptors: _descriptors(proxy, descriptorDefaults),\n setContext: (ctx) => _attachContext(proxy, ctx, subProxy, descriptorDefaults),\n override: (scope) => _attachContext(proxy.override(scope), context, subProxy, descriptorDefaults)\n };\n return new Proxy(cache, {\n deleteProperty(target, prop) {\n delete target[prop];\n delete proxy[prop];\n return true;\n },\n get(target, prop, receiver) {\n return _cached(target, prop,\n () => _resolveWithContext(target, prop, receiver));\n },\n getOwnPropertyDescriptor(target, prop) {\n return target._descriptors.allKeys\n ? Reflect.has(proxy, prop) ? {enumerable: true, configurable: true} : undefined\n : Reflect.getOwnPropertyDescriptor(proxy, prop);\n },\n getPrototypeOf() {\n return Reflect.getPrototypeOf(proxy);\n },\n has(target, prop) {\n return Reflect.has(proxy, prop);\n },\n ownKeys() {\n return Reflect.ownKeys(proxy);\n },\n set(target, prop, value) {\n proxy[prop] = value;\n delete target[prop];\n return true;\n }\n });\n}\nfunction _descriptors(proxy, defaults = {scriptable: true, indexable: true}) {\n const {_scriptable = defaults.scriptable, _indexable = defaults.indexable, _allKeys = defaults.allKeys} = proxy;\n return {\n allKeys: _allKeys,\n scriptable: _scriptable,\n indexable: _indexable,\n isScriptable: isFunction(_scriptable) ? _scriptable : () => _scriptable,\n isIndexable: isFunction(_indexable) ? _indexable : () => _indexable\n };\n}\nconst readKey = (prefix, name) => prefix ? prefix + _capitalize(name) : name;\nconst needsSubResolver = (prop, value) => isObject(value) && prop !== 'adapters' &&\n (Object.getPrototypeOf(value) === null || value.constructor === Object);\nfunction _cached(target, prop, resolve) {\n if (Object.prototype.hasOwnProperty.call(target, prop)) {\n return target[prop];\n }\n const value = resolve();\n target[prop] = value;\n return value;\n}\nfunction _resolveWithContext(target, prop, receiver) {\n const {_proxy, _context, _subProxy, _descriptors: descriptors} = target;\n let value = _proxy[prop];\n if (isFunction(value) && descriptors.isScriptable(prop)) {\n value = _resolveScriptable(prop, value, target, receiver);\n }\n if (isArray(value) && value.length) {\n value = _resolveArray(prop, value, target, descriptors.isIndexable);\n }\n if (needsSubResolver(prop, value)) {\n value = _attachContext(value, _context, _subProxy && _subProxy[prop], descriptors);\n }\n return value;\n}\nfunction _resolveScriptable(prop, value, target, receiver) {\n const {_proxy, _context, _subProxy, _stack} = target;\n if (_stack.has(prop)) {\n throw new Error('Recursion detected: ' + Array.from(_stack).join('->') + '->' + prop);\n }\n _stack.add(prop);\n value = value(_context, _subProxy || receiver);\n _stack.delete(prop);\n if (needsSubResolver(prop, value)) {\n value = createSubResolver(_proxy._scopes, _proxy, prop, value);\n }\n return value;\n}\nfunction _resolveArray(prop, value, target, isIndexable) {\n const {_proxy, _context, _subProxy, _descriptors: descriptors} = target;\n if (defined(_context.index) && isIndexable(prop)) {\n value = value[_context.index % value.length];\n } else if (isObject(value[0])) {\n const arr = value;\n const scopes = _proxy._scopes.filter(s => s !== arr);\n value = [];\n for (const item of arr) {\n const resolver = createSubResolver(scopes, _proxy, prop, item);\n value.push(_attachContext(resolver, _context, _subProxy && _subProxy[prop], descriptors));\n }\n }\n return value;\n}\nfunction resolveFallback(fallback, prop, value) {\n return isFunction(fallback) ? fallback(prop, value) : fallback;\n}\nconst getScope = (key, parent) => key === true ? parent\n : typeof key === 'string' ? resolveObjectKey(parent, key) : undefined;\nfunction addScopes(set, parentScopes, key, parentFallback, value) {\n for (const parent of parentScopes) {\n const scope = getScope(key, parent);\n if (scope) {\n set.add(scope);\n const fallback = resolveFallback(scope._fallback, key, value);\n if (defined(fallback) && fallback !== key && fallback !== parentFallback) {\n return fallback;\n }\n } else if (scope === false && defined(parentFallback) && key !== parentFallback) {\n return null;\n }\n }\n return false;\n}\nfunction createSubResolver(parentScopes, resolver, prop, value) {\n const rootScopes = resolver._rootScopes;\n const fallback = resolveFallback(resolver._fallback, prop, value);\n const allScopes = [...parentScopes, ...rootScopes];\n const set = new Set();\n set.add(value);\n let key = addScopesFromKey(set, allScopes, prop, fallback || prop, value);\n if (key === null) {\n return false;\n }\n if (defined(fallback) && fallback !== prop) {\n key = addScopesFromKey(set, allScopes, fallback, key, value);\n if (key === null) {\n return false;\n }\n }\n return _createResolver(Array.from(set), [''], rootScopes, fallback,\n () => subGetTarget(resolver, prop, value));\n}\nfunction addScopesFromKey(set, allScopes, key, fallback, item) {\n while (key) {\n key = addScopes(set, allScopes, key, fallback, item);\n }\n return key;\n}\nfunction subGetTarget(resolver, prop, value) {\n const parent = resolver._getTarget();\n if (!(prop in parent)) {\n parent[prop] = {};\n }\n const target = parent[prop];\n if (isArray(target) && isObject(value)) {\n return value;\n }\n return target;\n}\nfunction _resolveWithPrefixes(prop, prefixes, scopes, proxy) {\n let value;\n for (const prefix of prefixes) {\n value = _resolve(readKey(prefix, prop), scopes);\n if (defined(value)) {\n return needsSubResolver(prop, value)\n ? createSubResolver(scopes, proxy, prop, value)\n : value;\n }\n }\n}\nfunction _resolve(key, scopes) {\n for (const scope of scopes) {\n if (!scope) {\n continue;\n }\n const value = scope[key];\n if (defined(value)) {\n return value;\n }\n }\n}\nfunction getKeysFromAllScopes(target) {\n let keys = target._keys;\n if (!keys) {\n keys = target._keys = resolveKeysFromAllScopes(target._scopes);\n }\n return keys;\n}\nfunction resolveKeysFromAllScopes(scopes) {\n const set = new Set();\n for (const scope of scopes) {\n for (const key of Object.keys(scope).filter(k => !k.startsWith('_'))) {\n set.add(key);\n }\n }\n return Array.from(set);\n}\nfunction _parseObjectDataRadialScale(meta, data, start, count) {\n const {iScale} = meta;\n const {key = 'r'} = this._parsing;\n const parsed = new Array(count);\n let i, ilen, index, item;\n for (i = 0, ilen = count; i < ilen; ++i) {\n index = i + start;\n item = data[index];\n parsed[i] = {\n r: iScale.parse(resolveObjectKey(item, key), index)\n };\n }\n return parsed;\n}\n\nconst EPSILON = Number.EPSILON || 1e-14;\nconst getPoint = (points, i) => i < points.length && !points[i].skip && points[i];\nconst getValueAxis = (indexAxis) => indexAxis === 'x' ? 'y' : 'x';\nfunction splineCurve(firstPoint, middlePoint, afterPoint, t) {\n const previous = firstPoint.skip ? middlePoint : firstPoint;\n const current = middlePoint;\n const next = afterPoint.skip ? middlePoint : afterPoint;\n const d01 = distanceBetweenPoints(current, previous);\n const d12 = distanceBetweenPoints(next, current);\n let s01 = d01 / (d01 + d12);\n let s12 = d12 / (d01 + d12);\n s01 = isNaN(s01) ? 0 : s01;\n s12 = isNaN(s12) ? 0 : s12;\n const fa = t * s01;\n const fb = t * s12;\n return {\n previous: {\n x: current.x - fa * (next.x - previous.x),\n y: current.y - fa * (next.y - previous.y)\n },\n next: {\n x: current.x + fb * (next.x - previous.x),\n y: current.y + fb * (next.y - previous.y)\n }\n };\n}\nfunction monotoneAdjust(points, deltaK, mK) {\n const pointsLen = points.length;\n let alphaK, betaK, tauK, squaredMagnitude, pointCurrent;\n let pointAfter = getPoint(points, 0);\n for (let i = 0; i < pointsLen - 1; ++i) {\n pointCurrent = pointAfter;\n pointAfter = getPoint(points, i + 1);\n if (!pointCurrent || !pointAfter) {\n continue;\n }\n if (almostEquals(deltaK[i], 0, EPSILON)) {\n mK[i] = mK[i + 1] = 0;\n continue;\n }\n alphaK = mK[i] / deltaK[i];\n betaK = mK[i + 1] / deltaK[i];\n squaredMagnitude = Math.pow(alphaK, 2) + Math.pow(betaK, 2);\n if (squaredMagnitude <= 9) {\n continue;\n }\n tauK = 3 / Math.sqrt(squaredMagnitude);\n mK[i] = alphaK * tauK * deltaK[i];\n mK[i + 1] = betaK * tauK * deltaK[i];\n }\n}\nfunction monotoneCompute(points, mK, indexAxis = 'x') {\n const valueAxis = getValueAxis(indexAxis);\n const pointsLen = points.length;\n let delta, pointBefore, pointCurrent;\n let pointAfter = getPoint(points, 0);\n for (let i = 0; i < pointsLen; ++i) {\n pointBefore = pointCurrent;\n pointCurrent = pointAfter;\n pointAfter = getPoint(points, i + 1);\n if (!pointCurrent) {\n continue;\n }\n const iPixel = pointCurrent[indexAxis];\n const vPixel = pointCurrent[valueAxis];\n if (pointBefore) {\n delta = (iPixel - pointBefore[indexAxis]) / 3;\n pointCurrent[`cp1${indexAxis}`] = iPixel - delta;\n pointCurrent[`cp1${valueAxis}`] = vPixel - delta * mK[i];\n }\n if (pointAfter) {\n delta = (pointAfter[indexAxis] - iPixel) / 3;\n pointCurrent[`cp2${indexAxis}`] = iPixel + delta;\n pointCurrent[`cp2${valueAxis}`] = vPixel + delta * mK[i];\n }\n }\n}\nfunction splineCurveMonotone(points, indexAxis = 'x') {\n const valueAxis = getValueAxis(indexAxis);\n const pointsLen = points.length;\n const deltaK = Array(pointsLen).fill(0);\n const mK = Array(pointsLen);\n let i, pointBefore, pointCurrent;\n let pointAfter = getPoint(points, 0);\n for (i = 0; i < pointsLen; ++i) {\n pointBefore = pointCurrent;\n pointCurrent = pointAfter;\n pointAfter = getPoint(points, i + 1);\n if (!pointCurrent) {\n continue;\n }\n if (pointAfter) {\n const slopeDelta = pointAfter[indexAxis] - pointCurrent[indexAxis];\n deltaK[i] = slopeDelta !== 0 ? (pointAfter[valueAxis] - pointCurrent[valueAxis]) / slopeDelta : 0;\n }\n mK[i] = !pointBefore ? deltaK[i]\n : !pointAfter ? deltaK[i - 1]\n : (sign(deltaK[i - 1]) !== sign(deltaK[i])) ? 0\n : (deltaK[i - 1] + deltaK[i]) / 2;\n }\n monotoneAdjust(points, deltaK, mK);\n monotoneCompute(points, mK, indexAxis);\n}\nfunction capControlPoint(pt, min, max) {\n return Math.max(Math.min(pt, max), min);\n}\nfunction capBezierPoints(points, area) {\n let i, ilen, point, inArea, inAreaPrev;\n let inAreaNext = _isPointInArea(points[0], area);\n for (i = 0, ilen = points.length; i < ilen; ++i) {\n inAreaPrev = inArea;\n inArea = inAreaNext;\n inAreaNext = i < ilen - 1 && _isPointInArea(points[i + 1], area);\n if (!inArea) {\n continue;\n }\n point = points[i];\n if (inAreaPrev) {\n point.cp1x = capControlPoint(point.cp1x, area.left, area.right);\n point.cp1y = capControlPoint(point.cp1y, area.top, area.bottom);\n }\n if (inAreaNext) {\n point.cp2x = capControlPoint(point.cp2x, area.left, area.right);\n point.cp2y = capControlPoint(point.cp2y, area.top, area.bottom);\n }\n }\n}\nfunction _updateBezierControlPoints(points, options, area, loop, indexAxis) {\n let i, ilen, point, controlPoints;\n if (options.spanGaps) {\n points = points.filter((pt) => !pt.skip);\n }\n if (options.cubicInterpolationMode === 'monotone') {\n splineCurveMonotone(points, indexAxis);\n } else {\n let prev = loop ? points[points.length - 1] : points[0];\n for (i = 0, ilen = points.length; i < ilen; ++i) {\n point = points[i];\n controlPoints = splineCurve(\n prev,\n point,\n points[Math.min(i + 1, ilen - (loop ? 0 : 1)) % ilen],\n options.tension\n );\n point.cp1x = controlPoints.previous.x;\n point.cp1y = controlPoints.previous.y;\n point.cp2x = controlPoints.next.x;\n point.cp2y = controlPoints.next.y;\n prev = point;\n }\n }\n if (options.capBezierPoints) {\n capBezierPoints(points, area);\n }\n}\n\nfunction _isDomSupported() {\n return typeof window !== 'undefined' && typeof document !== 'undefined';\n}\nfunction _getParentNode(domNode) {\n let parent = domNode.parentNode;\n if (parent && parent.toString() === '[object ShadowRoot]') {\n parent = parent.host;\n }\n return parent;\n}\nfunction parseMaxStyle(styleValue, node, parentProperty) {\n let valueInPixels;\n if (typeof styleValue === 'string') {\n valueInPixels = parseInt(styleValue, 10);\n if (styleValue.indexOf('%') !== -1) {\n valueInPixels = valueInPixels / 100 * node.parentNode[parentProperty];\n }\n } else {\n valueInPixels = styleValue;\n }\n return valueInPixels;\n}\nconst getComputedStyle = (element) => window.getComputedStyle(element, null);\nfunction getStyle(el, property) {\n return getComputedStyle(el).getPropertyValue(property);\n}\nconst positions = ['top', 'right', 'bottom', 'left'];\nfunction getPositionedStyle(styles, style, suffix) {\n const result = {};\n suffix = suffix ? '-' + suffix : '';\n for (let i = 0; i < 4; i++) {\n const pos = positions[i];\n result[pos] = parseFloat(styles[style + '-' + pos + suffix]) || 0;\n }\n result.width = result.left + result.right;\n result.height = result.top + result.bottom;\n return result;\n}\nconst useOffsetPos = (x, y, target) => (x > 0 || y > 0) && (!target || !target.shadowRoot);\nfunction getCanvasPosition(e, canvas) {\n const touches = e.touches;\n const source = touches && touches.length ? touches[0] : e;\n const {offsetX, offsetY} = source;\n let box = false;\n let x, y;\n if (useOffsetPos(offsetX, offsetY, e.target)) {\n x = offsetX;\n y = offsetY;\n } else {\n const rect = canvas.getBoundingClientRect();\n x = source.clientX - rect.left;\n y = source.clientY - rect.top;\n box = true;\n }\n return {x, y, box};\n}\nfunction getRelativePosition(evt, chart) {\n if ('native' in evt) {\n return evt;\n }\n const {canvas, currentDevicePixelRatio} = chart;\n const style = getComputedStyle(canvas);\n const borderBox = style.boxSizing === 'border-box';\n const paddings = getPositionedStyle(style, 'padding');\n const borders = getPositionedStyle(style, 'border', 'width');\n const {x, y, box} = getCanvasPosition(evt, canvas);\n const xOffset = paddings.left + (box && borders.left);\n const yOffset = paddings.top + (box && borders.top);\n let {width, height} = chart;\n if (borderBox) {\n width -= paddings.width + borders.width;\n height -= paddings.height + borders.height;\n }\n return {\n x: Math.round((x - xOffset) / width * canvas.width / currentDevicePixelRatio),\n y: Math.round((y - yOffset) / height * canvas.height / currentDevicePixelRatio)\n };\n}\nfunction getContainerSize(canvas, width, height) {\n let maxWidth, maxHeight;\n if (width === undefined || height === undefined) {\n const container = _getParentNode(canvas);\n if (!container) {\n width = canvas.clientWidth;\n height = canvas.clientHeight;\n } else {\n const rect = container.getBoundingClientRect();\n const containerStyle = getComputedStyle(container);\n const containerBorder = getPositionedStyle(containerStyle, 'border', 'width');\n const containerPadding = getPositionedStyle(containerStyle, 'padding');\n width = rect.width - containerPadding.width - containerBorder.width;\n height = rect.height - containerPadding.height - containerBorder.height;\n maxWidth = parseMaxStyle(containerStyle.maxWidth, container, 'clientWidth');\n maxHeight = parseMaxStyle(containerStyle.maxHeight, container, 'clientHeight');\n }\n }\n return {\n width,\n height,\n maxWidth: maxWidth || INFINITY,\n maxHeight: maxHeight || INFINITY\n };\n}\nconst round1 = v => Math.round(v * 10) / 10;\nfunction getMaximumSize(canvas, bbWidth, bbHeight, aspectRatio) {\n const style = getComputedStyle(canvas);\n const margins = getPositionedStyle(style, 'margin');\n const maxWidth = parseMaxStyle(style.maxWidth, canvas, 'clientWidth') || INFINITY;\n const maxHeight = parseMaxStyle(style.maxHeight, canvas, 'clientHeight') || INFINITY;\n const containerSize = getContainerSize(canvas, bbWidth, bbHeight);\n let {width, height} = containerSize;\n if (style.boxSizing === 'content-box') {\n const borders = getPositionedStyle(style, 'border', 'width');\n const paddings = getPositionedStyle(style, 'padding');\n width -= paddings.width + borders.width;\n height -= paddings.height + borders.height;\n }\n width = Math.max(0, width - margins.width);\n height = Math.max(0, aspectRatio ? Math.floor(width / aspectRatio) : height - margins.height);\n width = round1(Math.min(width, maxWidth, containerSize.maxWidth));\n height = round1(Math.min(height, maxHeight, containerSize.maxHeight));\n if (width && !height) {\n height = round1(width / 2);\n }\n return {\n width,\n height\n };\n}\nfunction retinaScale(chart, forceRatio, forceStyle) {\n const pixelRatio = forceRatio || 1;\n const deviceHeight = Math.floor(chart.height * pixelRatio);\n const deviceWidth = Math.floor(chart.width * pixelRatio);\n chart.height = deviceHeight / pixelRatio;\n chart.width = deviceWidth / pixelRatio;\n const canvas = chart.canvas;\n if (canvas.style && (forceStyle || (!canvas.style.height && !canvas.style.width))) {\n canvas.style.height = `${chart.height}px`;\n canvas.style.width = `${chart.width}px`;\n }\n if (chart.currentDevicePixelRatio !== pixelRatio\n || canvas.height !== deviceHeight\n || canvas.width !== deviceWidth) {\n chart.currentDevicePixelRatio = pixelRatio;\n canvas.height = deviceHeight;\n canvas.width = deviceWidth;\n chart.ctx.setTransform(pixelRatio, 0, 0, pixelRatio, 0, 0);\n return true;\n }\n return false;\n}\nconst supportsEventListenerOptions = (function() {\n let passiveSupported = false;\n try {\n const options = {\n get passive() {\n passiveSupported = true;\n return false;\n }\n };\n window.addEventListener('test', null, options);\n window.removeEventListener('test', null, options);\n } catch (e) {\n }\n return passiveSupported;\n}());\nfunction readUsedSize(element, property) {\n const value = getStyle(element, property);\n const matches = value && value.match(/^(\\d+)(\\.\\d+)?px$/);\n return matches ? +matches[1] : undefined;\n}\n\nfunction _pointInLine(p1, p2, t, mode) {\n return {\n x: p1.x + t * (p2.x - p1.x),\n y: p1.y + t * (p2.y - p1.y)\n };\n}\nfunction _steppedInterpolation(p1, p2, t, mode) {\n return {\n x: p1.x + t * (p2.x - p1.x),\n y: mode === 'middle' ? t < 0.5 ? p1.y : p2.y\n : mode === 'after' ? t < 1 ? p1.y : p2.y\n : t > 0 ? p2.y : p1.y\n };\n}\nfunction _bezierInterpolation(p1, p2, t, mode) {\n const cp1 = {x: p1.cp2x, y: p1.cp2y};\n const cp2 = {x: p2.cp1x, y: p2.cp1y};\n const a = _pointInLine(p1, cp1, t);\n const b = _pointInLine(cp1, cp2, t);\n const c = _pointInLine(cp2, p2, t);\n const d = _pointInLine(a, b, t);\n const e = _pointInLine(b, c, t);\n return _pointInLine(d, e, t);\n}\n\nconst intlCache = new Map();\nfunction getNumberFormat(locale, options) {\n options = options || {};\n const cacheKey = locale + JSON.stringify(options);\n let formatter = intlCache.get(cacheKey);\n if (!formatter) {\n formatter = new Intl.NumberFormat(locale, options);\n intlCache.set(cacheKey, formatter);\n }\n return formatter;\n}\nfunction formatNumber(num, locale, options) {\n return getNumberFormat(locale, options).format(num);\n}\n\nconst getRightToLeftAdapter = function(rectX, width) {\n return {\n x(x) {\n return rectX + rectX + width - x;\n },\n setWidth(w) {\n width = w;\n },\n textAlign(align) {\n if (align === 'center') {\n return align;\n }\n return align === 'right' ? 'left' : 'right';\n },\n xPlus(x, value) {\n return x - value;\n },\n leftForLtr(x, itemWidth) {\n return x - itemWidth;\n },\n };\n};\nconst getLeftToRightAdapter = function() {\n return {\n x(x) {\n return x;\n },\n setWidth(w) {\n },\n textAlign(align) {\n return align;\n },\n xPlus(x, value) {\n return x + value;\n },\n leftForLtr(x, _itemWidth) {\n return x;\n },\n };\n};\nfunction getRtlAdapter(rtl, rectX, width) {\n return rtl ? getRightToLeftAdapter(rectX, width) : getLeftToRightAdapter();\n}\nfunction overrideTextDirection(ctx, direction) {\n let style, original;\n if (direction === 'ltr' || direction === 'rtl') {\n style = ctx.canvas.style;\n original = [\n style.getPropertyValue('direction'),\n style.getPropertyPriority('direction'),\n ];\n style.setProperty('direction', direction, 'important');\n ctx.prevTextDirection = original;\n }\n}\nfunction restoreTextDirection(ctx, original) {\n if (original !== undefined) {\n delete ctx.prevTextDirection;\n ctx.canvas.style.setProperty('direction', original[0], original[1]);\n }\n}\n\nfunction propertyFn(property) {\n if (property === 'angle') {\n return {\n between: _angleBetween,\n compare: _angleDiff,\n normalize: _normalizeAngle,\n };\n }\n return {\n between: _isBetween,\n compare: (a, b) => a - b,\n normalize: x => x\n };\n}\nfunction normalizeSegment({start, end, count, loop, style}) {\n return {\n start: start % count,\n end: end % count,\n loop: loop && (end - start + 1) % count === 0,\n style\n };\n}\nfunction getSegment(segment, points, bounds) {\n const {property, start: startBound, end: endBound} = bounds;\n const {between, normalize} = propertyFn(property);\n const count = points.length;\n let {start, end, loop} = segment;\n let i, ilen;\n if (loop) {\n start += count;\n end += count;\n for (i = 0, ilen = count; i < ilen; ++i) {\n if (!between(normalize(points[start % count][property]), startBound, endBound)) {\n break;\n }\n start--;\n end--;\n }\n start %= count;\n end %= count;\n }\n if (end < start) {\n end += count;\n }\n return {start, end, loop, style: segment.style};\n}\nfunction _boundSegment(segment, points, bounds) {\n if (!bounds) {\n return [segment];\n }\n const {property, start: startBound, end: endBound} = bounds;\n const count = points.length;\n const {compare, between, normalize} = propertyFn(property);\n const {start, end, loop, style} = getSegment(segment, points, bounds);\n const result = [];\n let inside = false;\n let subStart = null;\n let value, point, prevValue;\n const startIsBefore = () => between(startBound, prevValue, value) && compare(startBound, prevValue) !== 0;\n const endIsBefore = () => compare(endBound, value) === 0 || between(endBound, prevValue, value);\n const shouldStart = () => inside || startIsBefore();\n const shouldStop = () => !inside || endIsBefore();\n for (let i = start, prev = start; i <= end; ++i) {\n point = points[i % count];\n if (point.skip) {\n continue;\n }\n value = normalize(point[property]);\n if (value === prevValue) {\n continue;\n }\n inside = between(value, startBound, endBound);\n if (subStart === null && shouldStart()) {\n subStart = compare(value, startBound) === 0 ? i : prev;\n }\n if (subStart !== null && shouldStop()) {\n result.push(normalizeSegment({start: subStart, end: i, loop, count, style}));\n subStart = null;\n }\n prev = i;\n prevValue = value;\n }\n if (subStart !== null) {\n result.push(normalizeSegment({start: subStart, end, loop, count, style}));\n }\n return result;\n}\nfunction _boundSegments(line, bounds) {\n const result = [];\n const segments = line.segments;\n for (let i = 0; i < segments.length; i++) {\n const sub = _boundSegment(segments[i], line.points, bounds);\n if (sub.length) {\n result.push(...sub);\n }\n }\n return result;\n}\nfunction findStartAndEnd(points, count, loop, spanGaps) {\n let start = 0;\n let end = count - 1;\n if (loop && !spanGaps) {\n while (start < count && !points[start].skip) {\n start++;\n }\n }\n while (start < count && points[start].skip) {\n start++;\n }\n start %= count;\n if (loop) {\n end += start;\n }\n while (end > start && points[end % count].skip) {\n end--;\n }\n end %= count;\n return {start, end};\n}\nfunction solidSegments(points, start, max, loop) {\n const count = points.length;\n const result = [];\n let last = start;\n let prev = points[start];\n let end;\n for (end = start + 1; end <= max; ++end) {\n const cur = points[end % count];\n if (cur.skip || cur.stop) {\n if (!prev.skip) {\n loop = false;\n result.push({start: start % count, end: (end - 1) % count, loop});\n start = last = cur.stop ? end : null;\n }\n } else {\n last = end;\n if (prev.skip) {\n start = end;\n }\n }\n prev = cur;\n }\n if (last !== null) {\n result.push({start: start % count, end: last % count, loop});\n }\n return result;\n}\nfunction _computeSegments(line, segmentOptions) {\n const points = line.points;\n const spanGaps = line.options.spanGaps;\n const count = points.length;\n if (!count) {\n return [];\n }\n const loop = !!line._loop;\n const {start, end} = findStartAndEnd(points, count, loop, spanGaps);\n if (spanGaps === true) {\n return splitByStyles(line, [{start, end, loop}], points, segmentOptions);\n }\n const max = end < start ? end + count : end;\n const completeLoop = !!line._fullLoop && start === 0 && end === count - 1;\n return splitByStyles(line, solidSegments(points, start, max, completeLoop), points, segmentOptions);\n}\nfunction splitByStyles(line, segments, points, segmentOptions) {\n if (!segmentOptions || !segmentOptions.setContext || !points) {\n return segments;\n }\n return doSplitByStyles(line, segments, points, segmentOptions);\n}\nfunction doSplitByStyles(line, segments, points, segmentOptions) {\n const chartContext = line._chart.getContext();\n const baseStyle = readStyle(line.options);\n const {_datasetIndex: datasetIndex, options: {spanGaps}} = line;\n const count = points.length;\n const result = [];\n let prevStyle = baseStyle;\n let start = segments[0].start;\n let i = start;\n function addStyle(s, e, l, st) {\n const dir = spanGaps ? -1 : 1;\n if (s === e) {\n return;\n }\n s += count;\n while (points[s % count].skip) {\n s -= dir;\n }\n while (points[e % count].skip) {\n e += dir;\n }\n if (s % count !== e % count) {\n result.push({start: s % count, end: e % count, loop: l, style: st});\n prevStyle = st;\n start = e % count;\n }\n }\n for (const segment of segments) {\n start = spanGaps ? start : segment.start;\n let prev = points[start % count];\n let style;\n for (i = start + 1; i <= segment.end; i++) {\n const pt = points[i % count];\n style = readStyle(segmentOptions.setContext(createContext(chartContext, {\n type: 'segment',\n p0: prev,\n p1: pt,\n p0DataIndex: (i - 1) % count,\n p1DataIndex: i % count,\n datasetIndex\n })));\n if (styleChanged(style, prevStyle)) {\n addStyle(start, i - 1, segment.loop, prevStyle);\n }\n prev = pt;\n prevStyle = style;\n }\n if (start < i - 1) {\n addStyle(start, i - 1, segment.loop, prevStyle);\n }\n }\n return result;\n}\nfunction readStyle(options) {\n return {\n backgroundColor: options.backgroundColor,\n borderCapStyle: options.borderCapStyle,\n borderDash: options.borderDash,\n borderDashOffset: options.borderDashOffset,\n borderJoinStyle: options.borderJoinStyle,\n borderWidth: options.borderWidth,\n borderColor: options.borderColor\n };\n}\nfunction styleChanged(style, prevStyle) {\n return prevStyle && JSON.stringify(style) !== JSON.stringify(prevStyle);\n}\n\nexport { _isPointInArea as $, _factorize as A, finiteOrDefault as B, callback as C, _addGrace as D, _limitValue as E, toDegrees as F, _measureText as G, HALF_PI as H, _int16Range as I, _alignPixel as J, toPadding as K, clipArea as L, renderText as M, unclipArea as N, toFont as O, PI as P, each as Q, _toLeftRightCenter as R, _alignStartEnd as S, TAU as T, overrides as U, merge as V, _capitalize as W, getRelativePosition as X, _rlookupByKey as Y, _lookupByKey as Z, _arrayUnique as _, resolve as a, toLineHeight as a$, getAngleFromPoint as a0, getMaximumSize as a1, _getParentNode as a2, readUsedSize as a3, throttled as a4, supportsEventListenerOptions as a5, _isDomSupported as a6, descriptors as a7, isFunction as a8, _attachContext as a9, getRtlAdapter as aA, overrideTextDirection as aB, _textX as aC, restoreTextDirection as aD, drawPointLegend as aE, noop as aF, distanceBetweenPoints as aG, _setMinAndMaxByKey as aH, niceNum as aI, almostWhole as aJ, almostEquals as aK, _decimalPlaces as aL, _longestText as aM, _filterBetween as aN, _lookup as aO, isPatternOrGradient as aP, getHoverColor as aQ, clone$1 as aR, _merger as aS, _mergerIf as aT, _deprecated as aU, _splitKey as aV, toFontString as aW, splineCurve as aX, splineCurveMonotone as aY, getStyle as aZ, fontString as a_, _createResolver as aa, _descriptors as ab, mergeIf as ac, uid as ad, debounce as ae, retinaScale as af, clearCanvas as ag, setsEqual as ah, _elementsEqual as ai, _isClickEvent as aj, _isBetween as ak, _readValueToProps as al, _updateBezierControlPoints as am, _computeSegments as an, _boundSegments as ao, _steppedInterpolation as ap, _bezierInterpolation as aq, _pointInLine as ar, _steppedLineTo as as, _bezierCurveTo as at, drawPoint as au, addRoundedRectPath as av, toTRBL as aw, toTRBLCorners as ax, _boundSegment as ay, _normalizeAngle as az, isArray as b, PITAU as b0, INFINITY as b1, RAD_PER_DEG as b2, QUARTER_PI as b3, TWO_THIRDS_PI as b4, _angleDiff as b5, color as c, defaults as d, effects as e, resolveObjectKey as f, isNumberFinite as g, createContext as h, isObject as i, defined as j, isNullOrUndef as k, listenArrayEvents as l, toPercentage as m, toDimension as n, formatNumber as o, _angleBetween as p, _getStartAndCountOfVisiblePoints as q, requestAnimFrame as r, sign as s, toRadians as t, unlistenArrayEvents as u, valueOrDefault as v, _scaleRangesChanged as w, isNumber as x, _parseObjectDataRadialScale as y, log10 as z };\n","/*!\n * Chart.js v3.9.1\n * https://www.chartjs.org\n * (c) 2022 Chart.js Contributors\n * Released under the MIT License\n */\nimport { r as requestAnimFrame, a as resolve, e as effects, c as color, d as defaults, i as isObject, b as isArray, v as valueOrDefault, u as unlistenArrayEvents, l as listenArrayEvents, f as resolveObjectKey, g as isNumberFinite, h as createContext, j as defined, s as sign, k as isNullOrUndef, _ as _arrayUnique, t as toRadians, m as toPercentage, n as toDimension, T as TAU, o as formatNumber, p as _angleBetween, H as HALF_PI, P as PI, q as _getStartAndCountOfVisiblePoints, w as _scaleRangesChanged, x as isNumber, y as _parseObjectDataRadialScale, z as log10, A as _factorize, B as finiteOrDefault, C as callback, D as _addGrace, E as _limitValue, F as toDegrees, G as _measureText, I as _int16Range, J as _alignPixel, K as toPadding, L as clipArea, M as renderText, N as unclipArea, O as toFont, Q as each, R as _toLeftRightCenter, S as _alignStartEnd, U as overrides, V as merge, W as _capitalize, X as getRelativePosition, Y as _rlookupByKey, Z as _lookupByKey, $ as _isPointInArea, a0 as getAngleFromPoint, a1 as getMaximumSize, a2 as _getParentNode, a3 as readUsedSize, a4 as throttled, a5 as supportsEventListenerOptions, a6 as _isDomSupported, a7 as descriptors, a8 as isFunction, a9 as _attachContext, aa as _createResolver, ab as _descriptors, ac as mergeIf, ad as uid, ae as debounce, af as retinaScale, ag as clearCanvas, ah as setsEqual, ai as _elementsEqual, aj as _isClickEvent, ak as _isBetween, al as _readValueToProps, am as _updateBezierControlPoints, an as _computeSegments, ao as _boundSegments, ap as _steppedInterpolation, aq as _bezierInterpolation, ar as _pointInLine, as as _steppedLineTo, at as _bezierCurveTo, au as drawPoint, av as addRoundedRectPath, aw as toTRBL, ax as toTRBLCorners, ay as _boundSegment, az as _normalizeAngle, aA as getRtlAdapter, aB as overrideTextDirection, aC as _textX, aD as restoreTextDirection, aE as drawPointLegend, aF as noop, aG as distanceBetweenPoints, aH as _setMinAndMaxByKey, aI as niceNum, aJ as almostWhole, aK as almostEquals, aL as _decimalPlaces, aM as _longestText, aN as _filterBetween, aO as _lookup } from './chunks/helpers.segment.mjs';\nexport { d as defaults } from './chunks/helpers.segment.mjs';\n\nclass Animator {\n constructor() {\n this._request = null;\n this._charts = new Map();\n this._running = false;\n this._lastDate = undefined;\n }\n _notify(chart, anims, date, type) {\n const callbacks = anims.listeners[type];\n const numSteps = anims.duration;\n callbacks.forEach(fn => fn({\n chart,\n initial: anims.initial,\n numSteps,\n currentStep: Math.min(date - anims.start, numSteps)\n }));\n }\n _refresh() {\n if (this._request) {\n return;\n }\n this._running = true;\n this._request = requestAnimFrame.call(window, () => {\n this._update();\n this._request = null;\n if (this._running) {\n this._refresh();\n }\n });\n }\n _update(date = Date.now()) {\n let remaining = 0;\n this._charts.forEach((anims, chart) => {\n if (!anims.running || !anims.items.length) {\n return;\n }\n const items = anims.items;\n let i = items.length - 1;\n let draw = false;\n let item;\n for (; i >= 0; --i) {\n item = items[i];\n if (item._active) {\n if (item._total > anims.duration) {\n anims.duration = item._total;\n }\n item.tick(date);\n draw = true;\n } else {\n items[i] = items[items.length - 1];\n items.pop();\n }\n }\n if (draw) {\n chart.draw();\n this._notify(chart, anims, date, 'progress');\n }\n if (!items.length) {\n anims.running = false;\n this._notify(chart, anims, date, 'complete');\n anims.initial = false;\n }\n remaining += items.length;\n });\n this._lastDate = date;\n if (remaining === 0) {\n this._running = false;\n }\n }\n _getAnims(chart) {\n const charts = this._charts;\n let anims = charts.get(chart);\n if (!anims) {\n anims = {\n running: false,\n initial: true,\n items: [],\n listeners: {\n complete: [],\n progress: []\n }\n };\n charts.set(chart, anims);\n }\n return anims;\n }\n listen(chart, event, cb) {\n this._getAnims(chart).listeners[event].push(cb);\n }\n add(chart, items) {\n if (!items || !items.length) {\n return;\n }\n this._getAnims(chart).items.push(...items);\n }\n has(chart) {\n return this._getAnims(chart).items.length > 0;\n }\n start(chart) {\n const anims = this._charts.get(chart);\n if (!anims) {\n return;\n }\n anims.running = true;\n anims.start = Date.now();\n anims.duration = anims.items.reduce((acc, cur) => Math.max(acc, cur._duration), 0);\n this._refresh();\n }\n running(chart) {\n if (!this._running) {\n return false;\n }\n const anims = this._charts.get(chart);\n if (!anims || !anims.running || !anims.items.length) {\n return false;\n }\n return true;\n }\n stop(chart) {\n const anims = this._charts.get(chart);\n if (!anims || !anims.items.length) {\n return;\n }\n const items = anims.items;\n let i = items.length - 1;\n for (; i >= 0; --i) {\n items[i].cancel();\n }\n anims.items = [];\n this._notify(chart, anims, Date.now(), 'complete');\n }\n remove(chart) {\n return this._charts.delete(chart);\n }\n}\nvar animator = new Animator();\n\nconst transparent = 'transparent';\nconst interpolators = {\n boolean(from, to, factor) {\n return factor > 0.5 ? to : from;\n },\n color(from, to, factor) {\n const c0 = color(from || transparent);\n const c1 = c0.valid && color(to || transparent);\n return c1 && c1.valid\n ? c1.mix(c0, factor).hexString()\n : to;\n },\n number(from, to, factor) {\n return from + (to - from) * factor;\n }\n};\nclass Animation {\n constructor(cfg, target, prop, to) {\n const currentValue = target[prop];\n to = resolve([cfg.to, to, currentValue, cfg.from]);\n const from = resolve([cfg.from, currentValue, to]);\n this._active = true;\n this._fn = cfg.fn || interpolators[cfg.type || typeof from];\n this._easing = effects[cfg.easing] || effects.linear;\n this._start = Math.floor(Date.now() + (cfg.delay || 0));\n this._duration = this._total = Math.floor(cfg.duration);\n this._loop = !!cfg.loop;\n this._target = target;\n this._prop = prop;\n this._from = from;\n this._to = to;\n this._promises = undefined;\n }\n active() {\n return this._active;\n }\n update(cfg, to, date) {\n if (this._active) {\n this._notify(false);\n const currentValue = this._target[this._prop];\n const elapsed = date - this._start;\n const remain = this._duration - elapsed;\n this._start = date;\n this._duration = Math.floor(Math.max(remain, cfg.duration));\n this._total += elapsed;\n this._loop = !!cfg.loop;\n this._to = resolve([cfg.to, to, currentValue, cfg.from]);\n this._from = resolve([cfg.from, currentValue, to]);\n }\n }\n cancel() {\n if (this._active) {\n this.tick(Date.now());\n this._active = false;\n this._notify(false);\n }\n }\n tick(date) {\n const elapsed = date - this._start;\n const duration = this._duration;\n const prop = this._prop;\n const from = this._from;\n const loop = this._loop;\n const to = this._to;\n let factor;\n this._active = from !== to && (loop || (elapsed < duration));\n if (!this._active) {\n this._target[prop] = to;\n this._notify(true);\n return;\n }\n if (elapsed < 0) {\n this._target[prop] = from;\n return;\n }\n factor = (elapsed / duration) % 2;\n factor = loop && factor > 1 ? 2 - factor : factor;\n factor = this._easing(Math.min(1, Math.max(0, factor)));\n this._target[prop] = this._fn(from, to, factor);\n }\n wait() {\n const promises = this._promises || (this._promises = []);\n return new Promise((res, rej) => {\n promises.push({res, rej});\n });\n }\n _notify(resolved) {\n const method = resolved ? 'res' : 'rej';\n const promises = this._promises || [];\n for (let i = 0; i < promises.length; i++) {\n promises[i][method]();\n }\n }\n}\n\nconst numbers = ['x', 'y', 'borderWidth', 'radius', 'tension'];\nconst colors = ['color', 'borderColor', 'backgroundColor'];\ndefaults.set('animation', {\n delay: undefined,\n duration: 1000,\n easing: 'easeOutQuart',\n fn: undefined,\n from: undefined,\n loop: undefined,\n to: undefined,\n type: undefined,\n});\nconst animationOptions = Object.keys(defaults.animation);\ndefaults.describe('animation', {\n _fallback: false,\n _indexable: false,\n _scriptable: (name) => name !== 'onProgress' && name !== 'onComplete' && name !== 'fn',\n});\ndefaults.set('animations', {\n colors: {\n type: 'color',\n properties: colors\n },\n numbers: {\n type: 'number',\n properties: numbers\n },\n});\ndefaults.describe('animations', {\n _fallback: 'animation',\n});\ndefaults.set('transitions', {\n active: {\n animation: {\n duration: 400\n }\n },\n resize: {\n animation: {\n duration: 0\n }\n },\n show: {\n animations: {\n colors: {\n from: 'transparent'\n },\n visible: {\n type: 'boolean',\n duration: 0\n },\n }\n },\n hide: {\n animations: {\n colors: {\n to: 'transparent'\n },\n visible: {\n type: 'boolean',\n easing: 'linear',\n fn: v => v | 0\n },\n }\n }\n});\nclass Animations {\n constructor(chart, config) {\n this._chart = chart;\n this._properties = new Map();\n this.configure(config);\n }\n configure(config) {\n if (!isObject(config)) {\n return;\n }\n const animatedProps = this._properties;\n Object.getOwnPropertyNames(config).forEach(key => {\n const cfg = config[key];\n if (!isObject(cfg)) {\n return;\n }\n const resolved = {};\n for (const option of animationOptions) {\n resolved[option] = cfg[option];\n }\n (isArray(cfg.properties) && cfg.properties || [key]).forEach((prop) => {\n if (prop === key || !animatedProps.has(prop)) {\n animatedProps.set(prop, resolved);\n }\n });\n });\n }\n _animateOptions(target, values) {\n const newOptions = values.options;\n const options = resolveTargetOptions(target, newOptions);\n if (!options) {\n return [];\n }\n const animations = this._createAnimations(options, newOptions);\n if (newOptions.$shared) {\n awaitAll(target.options.$animations, newOptions).then(() => {\n target.options = newOptions;\n }, () => {\n });\n }\n return animations;\n }\n _createAnimations(target, values) {\n const animatedProps = this._properties;\n const animations = [];\n const running = target.$animations || (target.$animations = {});\n const props = Object.keys(values);\n const date = Date.now();\n let i;\n for (i = props.length - 1; i >= 0; --i) {\n const prop = props[i];\n if (prop.charAt(0) === '$') {\n continue;\n }\n if (prop === 'options') {\n animations.push(...this._animateOptions(target, values));\n continue;\n }\n const value = values[prop];\n let animation = running[prop];\n const cfg = animatedProps.get(prop);\n if (animation) {\n if (cfg && animation.active()) {\n animation.update(cfg, value, date);\n continue;\n } else {\n animation.cancel();\n }\n }\n if (!cfg || !cfg.duration) {\n target[prop] = value;\n continue;\n }\n running[prop] = animation = new Animation(cfg, target, prop, value);\n animations.push(animation);\n }\n return animations;\n }\n update(target, values) {\n if (this._properties.size === 0) {\n Object.assign(target, values);\n return;\n }\n const animations = this._createAnimations(target, values);\n if (animations.length) {\n animator.add(this._chart, animations);\n return true;\n }\n }\n}\nfunction awaitAll(animations, properties) {\n const running = [];\n const keys = Object.keys(properties);\n for (let i = 0; i < keys.length; i++) {\n const anim = animations[keys[i]];\n if (anim && anim.active()) {\n running.push(anim.wait());\n }\n }\n return Promise.all(running);\n}\nfunction resolveTargetOptions(target, newOptions) {\n if (!newOptions) {\n return;\n }\n let options = target.options;\n if (!options) {\n target.options = newOptions;\n return;\n }\n if (options.$shared) {\n target.options = options = Object.assign({}, options, {$shared: false, $animations: {}});\n }\n return options;\n}\n\nfunction scaleClip(scale, allowedOverflow) {\n const opts = scale && scale.options || {};\n const reverse = opts.reverse;\n const min = opts.min === undefined ? allowedOverflow : 0;\n const max = opts.max === undefined ? allowedOverflow : 0;\n return {\n start: reverse ? max : min,\n end: reverse ? min : max\n };\n}\nfunction defaultClip(xScale, yScale, allowedOverflow) {\n if (allowedOverflow === false) {\n return false;\n }\n const x = scaleClip(xScale, allowedOverflow);\n const y = scaleClip(yScale, allowedOverflow);\n return {\n top: y.end,\n right: x.end,\n bottom: y.start,\n left: x.start\n };\n}\nfunction toClip(value) {\n let t, r, b, l;\n if (isObject(value)) {\n t = value.top;\n r = value.right;\n b = value.bottom;\n l = value.left;\n } else {\n t = r = b = l = value;\n }\n return {\n top: t,\n right: r,\n bottom: b,\n left: l,\n disabled: value === false\n };\n}\nfunction getSortedDatasetIndices(chart, filterVisible) {\n const keys = [];\n const metasets = chart._getSortedDatasetMetas(filterVisible);\n let i, ilen;\n for (i = 0, ilen = metasets.length; i < ilen; ++i) {\n keys.push(metasets[i].index);\n }\n return keys;\n}\nfunction applyStack(stack, value, dsIndex, options = {}) {\n const keys = stack.keys;\n const singleMode = options.mode === 'single';\n let i, ilen, datasetIndex, otherValue;\n if (value === null) {\n return;\n }\n for (i = 0, ilen = keys.length; i < ilen; ++i) {\n datasetIndex = +keys[i];\n if (datasetIndex === dsIndex) {\n if (options.all) {\n continue;\n }\n break;\n }\n otherValue = stack.values[datasetIndex];\n if (isNumberFinite(otherValue) && (singleMode || (value === 0 || sign(value) === sign(otherValue)))) {\n value += otherValue;\n }\n }\n return value;\n}\nfunction convertObjectDataToArray(data) {\n const keys = Object.keys(data);\n const adata = new Array(keys.length);\n let i, ilen, key;\n for (i = 0, ilen = keys.length; i < ilen; ++i) {\n key = keys[i];\n adata[i] = {\n x: key,\n y: data[key]\n };\n }\n return adata;\n}\nfunction isStacked(scale, meta) {\n const stacked = scale && scale.options.stacked;\n return stacked || (stacked === undefined && meta.stack !== undefined);\n}\nfunction getStackKey(indexScale, valueScale, meta) {\n return `${indexScale.id}.${valueScale.id}.${meta.stack || meta.type}`;\n}\nfunction getUserBounds(scale) {\n const {min, max, minDefined, maxDefined} = scale.getUserBounds();\n return {\n min: minDefined ? min : Number.NEGATIVE_INFINITY,\n max: maxDefined ? max : Number.POSITIVE_INFINITY\n };\n}\nfunction getOrCreateStack(stacks, stackKey, indexValue) {\n const subStack = stacks[stackKey] || (stacks[stackKey] = {});\n return subStack[indexValue] || (subStack[indexValue] = {});\n}\nfunction getLastIndexInStack(stack, vScale, positive, type) {\n for (const meta of vScale.getMatchingVisibleMetas(type).reverse()) {\n const value = stack[meta.index];\n if ((positive && value > 0) || (!positive && value < 0)) {\n return meta.index;\n }\n }\n return null;\n}\nfunction updateStacks(controller, parsed) {\n const {chart, _cachedMeta: meta} = controller;\n const stacks = chart._stacks || (chart._stacks = {});\n const {iScale, vScale, index: datasetIndex} = meta;\n const iAxis = iScale.axis;\n const vAxis = vScale.axis;\n const key = getStackKey(iScale, vScale, meta);\n const ilen = parsed.length;\n let stack;\n for (let i = 0; i < ilen; ++i) {\n const item = parsed[i];\n const {[iAxis]: index, [vAxis]: value} = item;\n const itemStacks = item._stacks || (item._stacks = {});\n stack = itemStacks[vAxis] = getOrCreateStack(stacks, key, index);\n stack[datasetIndex] = value;\n stack._top = getLastIndexInStack(stack, vScale, true, meta.type);\n stack._bottom = getLastIndexInStack(stack, vScale, false, meta.type);\n }\n}\nfunction getFirstScaleId(chart, axis) {\n const scales = chart.scales;\n return Object.keys(scales).filter(key => scales[key].axis === axis).shift();\n}\nfunction createDatasetContext(parent, index) {\n return createContext(parent,\n {\n active: false,\n dataset: undefined,\n datasetIndex: index,\n index,\n mode: 'default',\n type: 'dataset'\n }\n );\n}\nfunction createDataContext(parent, index, element) {\n return createContext(parent, {\n active: false,\n dataIndex: index,\n parsed: undefined,\n raw: undefined,\n element,\n index,\n mode: 'default',\n type: 'data'\n });\n}\nfunction clearStacks(meta, items) {\n const datasetIndex = meta.controller.index;\n const axis = meta.vScale && meta.vScale.axis;\n if (!axis) {\n return;\n }\n items = items || meta._parsed;\n for (const parsed of items) {\n const stacks = parsed._stacks;\n if (!stacks || stacks[axis] === undefined || stacks[axis][datasetIndex] === undefined) {\n return;\n }\n delete stacks[axis][datasetIndex];\n }\n}\nconst isDirectUpdateMode = (mode) => mode === 'reset' || mode === 'none';\nconst cloneIfNotShared = (cached, shared) => shared ? cached : Object.assign({}, cached);\nconst createStack = (canStack, meta, chart) => canStack && !meta.hidden && meta._stacked\n && {keys: getSortedDatasetIndices(chart, true), values: null};\nclass DatasetController {\n constructor(chart, datasetIndex) {\n this.chart = chart;\n this._ctx = chart.ctx;\n this.index = datasetIndex;\n this._cachedDataOpts = {};\n this._cachedMeta = this.getMeta();\n this._type = this._cachedMeta.type;\n this.options = undefined;\n this._parsing = false;\n this._data = undefined;\n this._objectData = undefined;\n this._sharedOptions = undefined;\n this._drawStart = undefined;\n this._drawCount = undefined;\n this.enableOptionSharing = false;\n this.supportsDecimation = false;\n this.$context = undefined;\n this._syncList = [];\n this.initialize();\n }\n initialize() {\n const meta = this._cachedMeta;\n this.configure();\n this.linkScales();\n meta._stacked = isStacked(meta.vScale, meta);\n this.addElements();\n }\n updateIndex(datasetIndex) {\n if (this.index !== datasetIndex) {\n clearStacks(this._cachedMeta);\n }\n this.index = datasetIndex;\n }\n linkScales() {\n const chart = this.chart;\n const meta = this._cachedMeta;\n const dataset = this.getDataset();\n const chooseId = (axis, x, y, r) => axis === 'x' ? x : axis === 'r' ? r : y;\n const xid = meta.xAxisID = valueOrDefault(dataset.xAxisID, getFirstScaleId(chart, 'x'));\n const yid = meta.yAxisID = valueOrDefault(dataset.yAxisID, getFirstScaleId(chart, 'y'));\n const rid = meta.rAxisID = valueOrDefault(dataset.rAxisID, getFirstScaleId(chart, 'r'));\n const indexAxis = meta.indexAxis;\n const iid = meta.iAxisID = chooseId(indexAxis, xid, yid, rid);\n const vid = meta.vAxisID = chooseId(indexAxis, yid, xid, rid);\n meta.xScale = this.getScaleForId(xid);\n meta.yScale = this.getScaleForId(yid);\n meta.rScale = this.getScaleForId(rid);\n meta.iScale = this.getScaleForId(iid);\n meta.vScale = this.getScaleForId(vid);\n }\n getDataset() {\n return this.chart.data.datasets[this.index];\n }\n getMeta() {\n return this.chart.getDatasetMeta(this.index);\n }\n getScaleForId(scaleID) {\n return this.chart.scales[scaleID];\n }\n _getOtherScale(scale) {\n const meta = this._cachedMeta;\n return scale === meta.iScale\n ? meta.vScale\n : meta.iScale;\n }\n reset() {\n this._update('reset');\n }\n _destroy() {\n const meta = this._cachedMeta;\n if (this._data) {\n unlistenArrayEvents(this._data, this);\n }\n if (meta._stacked) {\n clearStacks(meta);\n }\n }\n _dataCheck() {\n const dataset = this.getDataset();\n const data = dataset.data || (dataset.data = []);\n const _data = this._data;\n if (isObject(data)) {\n this._data = convertObjectDataToArray(data);\n } else if (_data !== data) {\n if (_data) {\n unlistenArrayEvents(_data, this);\n const meta = this._cachedMeta;\n clearStacks(meta);\n meta._parsed = [];\n }\n if (data && Object.isExtensible(data)) {\n listenArrayEvents(data, this);\n }\n this._syncList = [];\n this._data = data;\n }\n }\n addElements() {\n const meta = this._cachedMeta;\n this._dataCheck();\n if (this.datasetElementType) {\n meta.dataset = new this.datasetElementType();\n }\n }\n buildOrUpdateElements(resetNewElements) {\n const meta = this._cachedMeta;\n const dataset = this.getDataset();\n let stackChanged = false;\n this._dataCheck();\n const oldStacked = meta._stacked;\n meta._stacked = isStacked(meta.vScale, meta);\n if (meta.stack !== dataset.stack) {\n stackChanged = true;\n clearStacks(meta);\n meta.stack = dataset.stack;\n }\n this._resyncElements(resetNewElements);\n if (stackChanged || oldStacked !== meta._stacked) {\n updateStacks(this, meta._parsed);\n }\n }\n configure() {\n const config = this.chart.config;\n const scopeKeys = config.datasetScopeKeys(this._type);\n const scopes = config.getOptionScopes(this.getDataset(), scopeKeys, true);\n this.options = config.createResolver(scopes, this.getContext());\n this._parsing = this.options.parsing;\n this._cachedDataOpts = {};\n }\n parse(start, count) {\n const {_cachedMeta: meta, _data: data} = this;\n const {iScale, _stacked} = meta;\n const iAxis = iScale.axis;\n let sorted = start === 0 && count === data.length ? true : meta._sorted;\n let prev = start > 0 && meta._parsed[start - 1];\n let i, cur, parsed;\n if (this._parsing === false) {\n meta._parsed = data;\n meta._sorted = true;\n parsed = data;\n } else {\n if (isArray(data[start])) {\n parsed = this.parseArrayData(meta, data, start, count);\n } else if (isObject(data[start])) {\n parsed = this.parseObjectData(meta, data, start, count);\n } else {\n parsed = this.parsePrimitiveData(meta, data, start, count);\n }\n const isNotInOrderComparedToPrev = () => cur[iAxis] === null || (prev && cur[iAxis] < prev[iAxis]);\n for (i = 0; i < count; ++i) {\n meta._parsed[i + start] = cur = parsed[i];\n if (sorted) {\n if (isNotInOrderComparedToPrev()) {\n sorted = false;\n }\n prev = cur;\n }\n }\n meta._sorted = sorted;\n }\n if (_stacked) {\n updateStacks(this, parsed);\n }\n }\n parsePrimitiveData(meta, data, start, count) {\n const {iScale, vScale} = meta;\n const iAxis = iScale.axis;\n const vAxis = vScale.axis;\n const labels = iScale.getLabels();\n const singleScale = iScale === vScale;\n const parsed = new Array(count);\n let i, ilen, index;\n for (i = 0, ilen = count; i < ilen; ++i) {\n index = i + start;\n parsed[i] = {\n [iAxis]: singleScale || iScale.parse(labels[index], index),\n [vAxis]: vScale.parse(data[index], index)\n };\n }\n return parsed;\n }\n parseArrayData(meta, data, start, count) {\n const {xScale, yScale} = meta;\n const parsed = new Array(count);\n let i, ilen, index, item;\n for (i = 0, ilen = count; i < ilen; ++i) {\n index = i + start;\n item = data[index];\n parsed[i] = {\n x: xScale.parse(item[0], index),\n y: yScale.parse(item[1], index)\n };\n }\n return parsed;\n }\n parseObjectData(meta, data, start, count) {\n const {xScale, yScale} = meta;\n const {xAxisKey = 'x', yAxisKey = 'y'} = this._parsing;\n const parsed = new Array(count);\n let i, ilen, index, item;\n for (i = 0, ilen = count; i < ilen; ++i) {\n index = i + start;\n item = data[index];\n parsed[i] = {\n x: xScale.parse(resolveObjectKey(item, xAxisKey), index),\n y: yScale.parse(resolveObjectKey(item, yAxisKey), index)\n };\n }\n return parsed;\n }\n getParsed(index) {\n return this._cachedMeta._parsed[index];\n }\n getDataElement(index) {\n return this._cachedMeta.data[index];\n }\n applyStack(scale, parsed, mode) {\n const chart = this.chart;\n const meta = this._cachedMeta;\n const value = parsed[scale.axis];\n const stack = {\n keys: getSortedDatasetIndices(chart, true),\n values: parsed._stacks[scale.axis]\n };\n return applyStack(stack, value, meta.index, {mode});\n }\n updateRangeFromParsed(range, scale, parsed, stack) {\n const parsedValue = parsed[scale.axis];\n let value = parsedValue === null ? NaN : parsedValue;\n const values = stack && parsed._stacks[scale.axis];\n if (stack && values) {\n stack.values = values;\n value = applyStack(stack, parsedValue, this._cachedMeta.index);\n }\n range.min = Math.min(range.min, value);\n range.max = Math.max(range.max, value);\n }\n getMinMax(scale, canStack) {\n const meta = this._cachedMeta;\n const _parsed = meta._parsed;\n const sorted = meta._sorted && scale === meta.iScale;\n const ilen = _parsed.length;\n const otherScale = this._getOtherScale(scale);\n const stack = createStack(canStack, meta, this.chart);\n const range = {min: Number.POSITIVE_INFINITY, max: Number.NEGATIVE_INFINITY};\n const {min: otherMin, max: otherMax} = getUserBounds(otherScale);\n let i, parsed;\n function _skip() {\n parsed = _parsed[i];\n const otherValue = parsed[otherScale.axis];\n return !isNumberFinite(parsed[scale.axis]) || otherMin > otherValue || otherMax < otherValue;\n }\n for (i = 0; i < ilen; ++i) {\n if (_skip()) {\n continue;\n }\n this.updateRangeFromParsed(range, scale, parsed, stack);\n if (sorted) {\n break;\n }\n }\n if (sorted) {\n for (i = ilen - 1; i >= 0; --i) {\n if (_skip()) {\n continue;\n }\n this.updateRangeFromParsed(range, scale, parsed, stack);\n break;\n }\n }\n return range;\n }\n getAllParsedValues(scale) {\n const parsed = this._cachedMeta._parsed;\n const values = [];\n let i, ilen, value;\n for (i = 0, ilen = parsed.length; i < ilen; ++i) {\n value = parsed[i][scale.axis];\n if (isNumberFinite(value)) {\n values.push(value);\n }\n }\n return values;\n }\n getMaxOverflow() {\n return false;\n }\n getLabelAndValue(index) {\n const meta = this._cachedMeta;\n const iScale = meta.iScale;\n const vScale = meta.vScale;\n const parsed = this.getParsed(index);\n return {\n label: iScale ? '' + iScale.getLabelForValue(parsed[iScale.axis]) : '',\n value: vScale ? '' + vScale.getLabelForValue(parsed[vScale.axis]) : ''\n };\n }\n _update(mode) {\n const meta = this._cachedMeta;\n this.update(mode || 'default');\n meta._clip = toClip(valueOrDefault(this.options.clip, defaultClip(meta.xScale, meta.yScale, this.getMaxOverflow())));\n }\n update(mode) {}\n draw() {\n const ctx = this._ctx;\n const chart = this.chart;\n const meta = this._cachedMeta;\n const elements = meta.data || [];\n const area = chart.chartArea;\n const active = [];\n const start = this._drawStart || 0;\n const count = this._drawCount || (elements.length - start);\n const drawActiveElementsOnTop = this.options.drawActiveElementsOnTop;\n let i;\n if (meta.dataset) {\n meta.dataset.draw(ctx, area, start, count);\n }\n for (i = start; i < start + count; ++i) {\n const element = elements[i];\n if (element.hidden) {\n continue;\n }\n if (element.active && drawActiveElementsOnTop) {\n active.push(element);\n } else {\n element.draw(ctx, area);\n }\n }\n for (i = 0; i < active.length; ++i) {\n active[i].draw(ctx, area);\n }\n }\n getStyle(index, active) {\n const mode = active ? 'active' : 'default';\n return index === undefined && this._cachedMeta.dataset\n ? this.resolveDatasetElementOptions(mode)\n : this.resolveDataElementOptions(index || 0, mode);\n }\n getContext(index, active, mode) {\n const dataset = this.getDataset();\n let context;\n if (index >= 0 && index < this._cachedMeta.data.length) {\n const element = this._cachedMeta.data[index];\n context = element.$context ||\n (element.$context = createDataContext(this.getContext(), index, element));\n context.parsed = this.getParsed(index);\n context.raw = dataset.data[index];\n context.index = context.dataIndex = index;\n } else {\n context = this.$context ||\n (this.$context = createDatasetContext(this.chart.getContext(), this.index));\n context.dataset = dataset;\n context.index = context.datasetIndex = this.index;\n }\n context.active = !!active;\n context.mode = mode;\n return context;\n }\n resolveDatasetElementOptions(mode) {\n return this._resolveElementOptions(this.datasetElementType.id, mode);\n }\n resolveDataElementOptions(index, mode) {\n return this._resolveElementOptions(this.dataElementType.id, mode, index);\n }\n _resolveElementOptions(elementType, mode = 'default', index) {\n const active = mode === 'active';\n const cache = this._cachedDataOpts;\n const cacheKey = elementType + '-' + mode;\n const cached = cache[cacheKey];\n const sharing = this.enableOptionSharing && defined(index);\n if (cached) {\n return cloneIfNotShared(cached, sharing);\n }\n const config = this.chart.config;\n const scopeKeys = config.datasetElementScopeKeys(this._type, elementType);\n const prefixes = active ? [`${elementType}Hover`, 'hover', elementType, ''] : [elementType, ''];\n const scopes = config.getOptionScopes(this.getDataset(), scopeKeys);\n const names = Object.keys(defaults.elements[elementType]);\n const context = () => this.getContext(index, active);\n const values = config.resolveNamedOptions(scopes, names, context, prefixes);\n if (values.$shared) {\n values.$shared = sharing;\n cache[cacheKey] = Object.freeze(cloneIfNotShared(values, sharing));\n }\n return values;\n }\n _resolveAnimations(index, transition, active) {\n const chart = this.chart;\n const cache = this._cachedDataOpts;\n const cacheKey = `animation-${transition}`;\n const cached = cache[cacheKey];\n if (cached) {\n return cached;\n }\n let options;\n if (chart.options.animation !== false) {\n const config = this.chart.config;\n const scopeKeys = config.datasetAnimationScopeKeys(this._type, transition);\n const scopes = config.getOptionScopes(this.getDataset(), scopeKeys);\n options = config.createResolver(scopes, this.getContext(index, active, transition));\n }\n const animations = new Animations(chart, options && options.animations);\n if (options && options._cacheable) {\n cache[cacheKey] = Object.freeze(animations);\n }\n return animations;\n }\n getSharedOptions(options) {\n if (!options.$shared) {\n return;\n }\n return this._sharedOptions || (this._sharedOptions = Object.assign({}, options));\n }\n includeOptions(mode, sharedOptions) {\n return !sharedOptions || isDirectUpdateMode(mode) || this.chart._animationsDisabled;\n }\n _getSharedOptions(start, mode) {\n const firstOpts = this.resolveDataElementOptions(start, mode);\n const previouslySharedOptions = this._sharedOptions;\n const sharedOptions = this.getSharedOptions(firstOpts);\n const includeOptions = this.includeOptions(mode, sharedOptions) || (sharedOptions !== previouslySharedOptions);\n this.updateSharedOptions(sharedOptions, mode, firstOpts);\n return {sharedOptions, includeOptions};\n }\n updateElement(element, index, properties, mode) {\n if (isDirectUpdateMode(mode)) {\n Object.assign(element, properties);\n } else {\n this._resolveAnimations(index, mode).update(element, properties);\n }\n }\n updateSharedOptions(sharedOptions, mode, newOptions) {\n if (sharedOptions && !isDirectUpdateMode(mode)) {\n this._resolveAnimations(undefined, mode).update(sharedOptions, newOptions);\n }\n }\n _setStyle(element, index, mode, active) {\n element.active = active;\n const options = this.getStyle(index, active);\n this._resolveAnimations(index, mode, active).update(element, {\n options: (!active && this.getSharedOptions(options)) || options\n });\n }\n removeHoverStyle(element, datasetIndex, index) {\n this._setStyle(element, index, 'active', false);\n }\n setHoverStyle(element, datasetIndex, index) {\n this._setStyle(element, index, 'active', true);\n }\n _removeDatasetHoverStyle() {\n const element = this._cachedMeta.dataset;\n if (element) {\n this._setStyle(element, undefined, 'active', false);\n }\n }\n _setDatasetHoverStyle() {\n const element = this._cachedMeta.dataset;\n if (element) {\n this._setStyle(element, undefined, 'active', true);\n }\n }\n _resyncElements(resetNewElements) {\n const data = this._data;\n const elements = this._cachedMeta.data;\n for (const [method, arg1, arg2] of this._syncList) {\n this[method](arg1, arg2);\n }\n this._syncList = [];\n const numMeta = elements.length;\n const numData = data.length;\n const count = Math.min(numData, numMeta);\n if (count) {\n this.parse(0, count);\n }\n if (numData > numMeta) {\n this._insertElements(numMeta, numData - numMeta, resetNewElements);\n } else if (numData < numMeta) {\n this._removeElements(numData, numMeta - numData);\n }\n }\n _insertElements(start, count, resetNewElements = true) {\n const meta = this._cachedMeta;\n const data = meta.data;\n const end = start + count;\n let i;\n const move = (arr) => {\n arr.length += count;\n for (i = arr.length - 1; i >= end; i--) {\n arr[i] = arr[i - count];\n }\n };\n move(data);\n for (i = start; i < end; ++i) {\n data[i] = new this.dataElementType();\n }\n if (this._parsing) {\n move(meta._parsed);\n }\n this.parse(start, count);\n if (resetNewElements) {\n this.updateElements(data, start, count, 'reset');\n }\n }\n updateElements(element, start, count, mode) {}\n _removeElements(start, count) {\n const meta = this._cachedMeta;\n if (this._parsing) {\n const removed = meta._parsed.splice(start, count);\n if (meta._stacked) {\n clearStacks(meta, removed);\n }\n }\n meta.data.splice(start, count);\n }\n _sync(args) {\n if (this._parsing) {\n this._syncList.push(args);\n } else {\n const [method, arg1, arg2] = args;\n this[method](arg1, arg2);\n }\n this.chart._dataChanges.push([this.index, ...args]);\n }\n _onDataPush() {\n const count = arguments.length;\n this._sync(['_insertElements', this.getDataset().data.length - count, count]);\n }\n _onDataPop() {\n this._sync(['_removeElements', this._cachedMeta.data.length - 1, 1]);\n }\n _onDataShift() {\n this._sync(['_removeElements', 0, 1]);\n }\n _onDataSplice(start, count) {\n if (count) {\n this._sync(['_removeElements', start, count]);\n }\n const newCount = arguments.length - 2;\n if (newCount) {\n this._sync(['_insertElements', start, newCount]);\n }\n }\n _onDataUnshift() {\n this._sync(['_insertElements', 0, arguments.length]);\n }\n}\nDatasetController.defaults = {};\nDatasetController.prototype.datasetElementType = null;\nDatasetController.prototype.dataElementType = null;\n\nfunction getAllScaleValues(scale, type) {\n if (!scale._cache.$bar) {\n const visibleMetas = scale.getMatchingVisibleMetas(type);\n let values = [];\n for (let i = 0, ilen = visibleMetas.length; i < ilen; i++) {\n values = values.concat(visibleMetas[i].controller.getAllParsedValues(scale));\n }\n scale._cache.$bar = _arrayUnique(values.sort((a, b) => a - b));\n }\n return scale._cache.$bar;\n}\nfunction computeMinSampleSize(meta) {\n const scale = meta.iScale;\n const values = getAllScaleValues(scale, meta.type);\n let min = scale._length;\n let i, ilen, curr, prev;\n const updateMinAndPrev = () => {\n if (curr === 32767 || curr === -32768) {\n return;\n }\n if (defined(prev)) {\n min = Math.min(min, Math.abs(curr - prev) || min);\n }\n prev = curr;\n };\n for (i = 0, ilen = values.length; i < ilen; ++i) {\n curr = scale.getPixelForValue(values[i]);\n updateMinAndPrev();\n }\n prev = undefined;\n for (i = 0, ilen = scale.ticks.length; i < ilen; ++i) {\n curr = scale.getPixelForTick(i);\n updateMinAndPrev();\n }\n return min;\n}\nfunction computeFitCategoryTraits(index, ruler, options, stackCount) {\n const thickness = options.barThickness;\n let size, ratio;\n if (isNullOrUndef(thickness)) {\n size = ruler.min * options.categoryPercentage;\n ratio = options.barPercentage;\n } else {\n size = thickness * stackCount;\n ratio = 1;\n }\n return {\n chunk: size / stackCount,\n ratio,\n start: ruler.pixels[index] - (size / 2)\n };\n}\nfunction computeFlexCategoryTraits(index, ruler, options, stackCount) {\n const pixels = ruler.pixels;\n const curr = pixels[index];\n let prev = index > 0 ? pixels[index - 1] : null;\n let next = index < pixels.length - 1 ? pixels[index + 1] : null;\n const percent = options.categoryPercentage;\n if (prev === null) {\n prev = curr - (next === null ? ruler.end - ruler.start : next - curr);\n }\n if (next === null) {\n next = curr + curr - prev;\n }\n const start = curr - (curr - Math.min(prev, next)) / 2 * percent;\n const size = Math.abs(next - prev) / 2 * percent;\n return {\n chunk: size / stackCount,\n ratio: options.barPercentage,\n start\n };\n}\nfunction parseFloatBar(entry, item, vScale, i) {\n const startValue = vScale.parse(entry[0], i);\n const endValue = vScale.parse(entry[1], i);\n const min = Math.min(startValue, endValue);\n const max = Math.max(startValue, endValue);\n let barStart = min;\n let barEnd = max;\n if (Math.abs(min) > Math.abs(max)) {\n barStart = max;\n barEnd = min;\n }\n item[vScale.axis] = barEnd;\n item._custom = {\n barStart,\n barEnd,\n start: startValue,\n end: endValue,\n min,\n max\n };\n}\nfunction parseValue(entry, item, vScale, i) {\n if (isArray(entry)) {\n parseFloatBar(entry, item, vScale, i);\n } else {\n item[vScale.axis] = vScale.parse(entry, i);\n }\n return item;\n}\nfunction parseArrayOrPrimitive(meta, data, start, count) {\n const iScale = meta.iScale;\n const vScale = meta.vScale;\n const labels = iScale.getLabels();\n const singleScale = iScale === vScale;\n const parsed = [];\n let i, ilen, item, entry;\n for (i = start, ilen = start + count; i < ilen; ++i) {\n entry = data[i];\n item = {};\n item[iScale.axis] = singleScale || iScale.parse(labels[i], i);\n parsed.push(parseValue(entry, item, vScale, i));\n }\n return parsed;\n}\nfunction isFloatBar(custom) {\n return custom && custom.barStart !== undefined && custom.barEnd !== undefined;\n}\nfunction barSign(size, vScale, actualBase) {\n if (size !== 0) {\n return sign(size);\n }\n return (vScale.isHorizontal() ? 1 : -1) * (vScale.min >= actualBase ? 1 : -1);\n}\nfunction borderProps(properties) {\n let reverse, start, end, top, bottom;\n if (properties.horizontal) {\n reverse = properties.base > properties.x;\n start = 'left';\n end = 'right';\n } else {\n reverse = properties.base < properties.y;\n start = 'bottom';\n end = 'top';\n }\n if (reverse) {\n top = 'end';\n bottom = 'start';\n } else {\n top = 'start';\n bottom = 'end';\n }\n return {start, end, reverse, top, bottom};\n}\nfunction setBorderSkipped(properties, options, stack, index) {\n let edge = options.borderSkipped;\n const res = {};\n if (!edge) {\n properties.borderSkipped = res;\n return;\n }\n if (edge === true) {\n properties.borderSkipped = {top: true, right: true, bottom: true, left: true};\n return;\n }\n const {start, end, reverse, top, bottom} = borderProps(properties);\n if (edge === 'middle' && stack) {\n properties.enableBorderRadius = true;\n if ((stack._top || 0) === index) {\n edge = top;\n } else if ((stack._bottom || 0) === index) {\n edge = bottom;\n } else {\n res[parseEdge(bottom, start, end, reverse)] = true;\n edge = top;\n }\n }\n res[parseEdge(edge, start, end, reverse)] = true;\n properties.borderSkipped = res;\n}\nfunction parseEdge(edge, a, b, reverse) {\n if (reverse) {\n edge = swap(edge, a, b);\n edge = startEnd(edge, b, a);\n } else {\n edge = startEnd(edge, a, b);\n }\n return edge;\n}\nfunction swap(orig, v1, v2) {\n return orig === v1 ? v2 : orig === v2 ? v1 : orig;\n}\nfunction startEnd(v, start, end) {\n return v === 'start' ? start : v === 'end' ? end : v;\n}\nfunction setInflateAmount(properties, {inflateAmount}, ratio) {\n properties.inflateAmount = inflateAmount === 'auto'\n ? ratio === 1 ? 0.33 : 0\n : inflateAmount;\n}\nclass BarController extends DatasetController {\n parsePrimitiveData(meta, data, start, count) {\n return parseArrayOrPrimitive(meta, data, start, count);\n }\n parseArrayData(meta, data, start, count) {\n return parseArrayOrPrimitive(meta, data, start, count);\n }\n parseObjectData(meta, data, start, count) {\n const {iScale, vScale} = meta;\n const {xAxisKey = 'x', yAxisKey = 'y'} = this._parsing;\n const iAxisKey = iScale.axis === 'x' ? xAxisKey : yAxisKey;\n const vAxisKey = vScale.axis === 'x' ? xAxisKey : yAxisKey;\n const parsed = [];\n let i, ilen, item, obj;\n for (i = start, ilen = start + count; i < ilen; ++i) {\n obj = data[i];\n item = {};\n item[iScale.axis] = iScale.parse(resolveObjectKey(obj, iAxisKey), i);\n parsed.push(parseValue(resolveObjectKey(obj, vAxisKey), item, vScale, i));\n }\n return parsed;\n }\n updateRangeFromParsed(range, scale, parsed, stack) {\n super.updateRangeFromParsed(range, scale, parsed, stack);\n const custom = parsed._custom;\n if (custom && scale === this._cachedMeta.vScale) {\n range.min = Math.min(range.min, custom.min);\n range.max = Math.max(range.max, custom.max);\n }\n }\n getMaxOverflow() {\n return 0;\n }\n getLabelAndValue(index) {\n const meta = this._cachedMeta;\n const {iScale, vScale} = meta;\n const parsed = this.getParsed(index);\n const custom = parsed._custom;\n const value = isFloatBar(custom)\n ? '[' + custom.start + ', ' + custom.end + ']'\n : '' + vScale.getLabelForValue(parsed[vScale.axis]);\n return {\n label: '' + iScale.getLabelForValue(parsed[iScale.axis]),\n value\n };\n }\n initialize() {\n this.enableOptionSharing = true;\n super.initialize();\n const meta = this._cachedMeta;\n meta.stack = this.getDataset().stack;\n }\n update(mode) {\n const meta = this._cachedMeta;\n this.updateElements(meta.data, 0, meta.data.length, mode);\n }\n updateElements(bars, start, count, mode) {\n const reset = mode === 'reset';\n const {index, _cachedMeta: {vScale}} = this;\n const base = vScale.getBasePixel();\n const horizontal = vScale.isHorizontal();\n const ruler = this._getRuler();\n const {sharedOptions, includeOptions} = this._getSharedOptions(start, mode);\n for (let i = start; i < start + count; i++) {\n const parsed = this.getParsed(i);\n const vpixels = reset || isNullOrUndef(parsed[vScale.axis]) ? {base, head: base} : this._calculateBarValuePixels(i);\n const ipixels = this._calculateBarIndexPixels(i, ruler);\n const stack = (parsed._stacks || {})[vScale.axis];\n const properties = {\n horizontal,\n base: vpixels.base,\n enableBorderRadius: !stack || isFloatBar(parsed._custom) || (index === stack._top || index === stack._bottom),\n x: horizontal ? vpixels.head : ipixels.center,\n y: horizontal ? ipixels.center : vpixels.head,\n height: horizontal ? ipixels.size : Math.abs(vpixels.size),\n width: horizontal ? Math.abs(vpixels.size) : ipixels.size\n };\n if (includeOptions) {\n properties.options = sharedOptions || this.resolveDataElementOptions(i, bars[i].active ? 'active' : mode);\n }\n const options = properties.options || bars[i].options;\n setBorderSkipped(properties, options, stack, index);\n setInflateAmount(properties, options, ruler.ratio);\n this.updateElement(bars[i], i, properties, mode);\n }\n }\n _getStacks(last, dataIndex) {\n const {iScale} = this._cachedMeta;\n const metasets = iScale.getMatchingVisibleMetas(this._type)\n .filter(meta => meta.controller.options.grouped);\n const stacked = iScale.options.stacked;\n const stacks = [];\n const skipNull = (meta) => {\n const parsed = meta.controller.getParsed(dataIndex);\n const val = parsed && parsed[meta.vScale.axis];\n if (isNullOrUndef(val) || isNaN(val)) {\n return true;\n }\n };\n for (const meta of metasets) {\n if (dataIndex !== undefined && skipNull(meta)) {\n continue;\n }\n if (stacked === false || stacks.indexOf(meta.stack) === -1 ||\n\t\t\t\t(stacked === undefined && meta.stack === undefined)) {\n stacks.push(meta.stack);\n }\n if (meta.index === last) {\n break;\n }\n }\n if (!stacks.length) {\n stacks.push(undefined);\n }\n return stacks;\n }\n _getStackCount(index) {\n return this._getStacks(undefined, index).length;\n }\n _getStackIndex(datasetIndex, name, dataIndex) {\n const stacks = this._getStacks(datasetIndex, dataIndex);\n const index = (name !== undefined)\n ? stacks.indexOf(name)\n : -1;\n return (index === -1)\n ? stacks.length - 1\n : index;\n }\n _getRuler() {\n const opts = this.options;\n const meta = this._cachedMeta;\n const iScale = meta.iScale;\n const pixels = [];\n let i, ilen;\n for (i = 0, ilen = meta.data.length; i < ilen; ++i) {\n pixels.push(iScale.getPixelForValue(this.getParsed(i)[iScale.axis], i));\n }\n const barThickness = opts.barThickness;\n const min = barThickness || computeMinSampleSize(meta);\n return {\n min,\n pixels,\n start: iScale._startPixel,\n end: iScale._endPixel,\n stackCount: this._getStackCount(),\n scale: iScale,\n grouped: opts.grouped,\n ratio: barThickness ? 1 : opts.categoryPercentage * opts.barPercentage\n };\n }\n _calculateBarValuePixels(index) {\n const {_cachedMeta: {vScale, _stacked}, options: {base: baseValue, minBarLength}} = this;\n const actualBase = baseValue || 0;\n const parsed = this.getParsed(index);\n const custom = parsed._custom;\n const floating = isFloatBar(custom);\n let value = parsed[vScale.axis];\n let start = 0;\n let length = _stacked ? this.applyStack(vScale, parsed, _stacked) : value;\n let head, size;\n if (length !== value) {\n start = length - value;\n length = value;\n }\n if (floating) {\n value = custom.barStart;\n length = custom.barEnd - custom.barStart;\n if (value !== 0 && sign(value) !== sign(custom.barEnd)) {\n start = 0;\n }\n start += value;\n }\n const startValue = !isNullOrUndef(baseValue) && !floating ? baseValue : start;\n let base = vScale.getPixelForValue(startValue);\n if (this.chart.getDataVisibility(index)) {\n head = vScale.getPixelForValue(start + length);\n } else {\n head = base;\n }\n size = head - base;\n if (Math.abs(size) < minBarLength) {\n size = barSign(size, vScale, actualBase) * minBarLength;\n if (value === actualBase) {\n base -= size / 2;\n }\n const startPixel = vScale.getPixelForDecimal(0);\n const endPixel = vScale.getPixelForDecimal(1);\n const min = Math.min(startPixel, endPixel);\n const max = Math.max(startPixel, endPixel);\n base = Math.max(Math.min(base, max), min);\n head = base + size;\n }\n if (base === vScale.getPixelForValue(actualBase)) {\n const halfGrid = sign(size) * vScale.getLineWidthForValue(actualBase) / 2;\n base += halfGrid;\n size -= halfGrid;\n }\n return {\n size,\n base,\n head,\n center: head + size / 2\n };\n }\n _calculateBarIndexPixels(index, ruler) {\n const scale = ruler.scale;\n const options = this.options;\n const skipNull = options.skipNull;\n const maxBarThickness = valueOrDefault(options.maxBarThickness, Infinity);\n let center, size;\n if (ruler.grouped) {\n const stackCount = skipNull ? this._getStackCount(index) : ruler.stackCount;\n const range = options.barThickness === 'flex'\n ? computeFlexCategoryTraits(index, ruler, options, stackCount)\n : computeFitCategoryTraits(index, ruler, options, stackCount);\n const stackIndex = this._getStackIndex(this.index, this._cachedMeta.stack, skipNull ? index : undefined);\n center = range.start + (range.chunk * stackIndex) + (range.chunk / 2);\n size = Math.min(maxBarThickness, range.chunk * range.ratio);\n } else {\n center = scale.getPixelForValue(this.getParsed(index)[scale.axis], index);\n size = Math.min(maxBarThickness, ruler.min * ruler.ratio);\n }\n return {\n base: center - size / 2,\n head: center + size / 2,\n center,\n size\n };\n }\n draw() {\n const meta = this._cachedMeta;\n const vScale = meta.vScale;\n const rects = meta.data;\n const ilen = rects.length;\n let i = 0;\n for (; i < ilen; ++i) {\n if (this.getParsed(i)[vScale.axis] !== null) {\n rects[i].draw(this._ctx);\n }\n }\n }\n}\nBarController.id = 'bar';\nBarController.defaults = {\n datasetElementType: false,\n dataElementType: 'bar',\n categoryPercentage: 0.8,\n barPercentage: 0.9,\n grouped: true,\n animations: {\n numbers: {\n type: 'number',\n properties: ['x', 'y', 'base', 'width', 'height']\n }\n }\n};\nBarController.overrides = {\n scales: {\n _index_: {\n type: 'category',\n offset: true,\n grid: {\n offset: true\n }\n },\n _value_: {\n type: 'linear',\n beginAtZero: true,\n }\n }\n};\n\nclass BubbleController extends DatasetController {\n initialize() {\n this.enableOptionSharing = true;\n super.initialize();\n }\n parsePrimitiveData(meta, data, start, count) {\n const parsed = super.parsePrimitiveData(meta, data, start, count);\n for (let i = 0; i < parsed.length; i++) {\n parsed[i]._custom = this.resolveDataElementOptions(i + start).radius;\n }\n return parsed;\n }\n parseArrayData(meta, data, start, count) {\n const parsed = super.parseArrayData(meta, data, start, count);\n for (let i = 0; i < parsed.length; i++) {\n const item = data[start + i];\n parsed[i]._custom = valueOrDefault(item[2], this.resolveDataElementOptions(i + start).radius);\n }\n return parsed;\n }\n parseObjectData(meta, data, start, count) {\n const parsed = super.parseObjectData(meta, data, start, count);\n for (let i = 0; i < parsed.length; i++) {\n const item = data[start + i];\n parsed[i]._custom = valueOrDefault(item && item.r && +item.r, this.resolveDataElementOptions(i + start).radius);\n }\n return parsed;\n }\n getMaxOverflow() {\n const data = this._cachedMeta.data;\n let max = 0;\n for (let i = data.length - 1; i >= 0; --i) {\n max = Math.max(max, data[i].size(this.resolveDataElementOptions(i)) / 2);\n }\n return max > 0 && max;\n }\n getLabelAndValue(index) {\n const meta = this._cachedMeta;\n const {xScale, yScale} = meta;\n const parsed = this.getParsed(index);\n const x = xScale.getLabelForValue(parsed.x);\n const y = yScale.getLabelForValue(parsed.y);\n const r = parsed._custom;\n return {\n label: meta.label,\n value: '(' + x + ', ' + y + (r ? ', ' + r : '') + ')'\n };\n }\n update(mode) {\n const points = this._cachedMeta.data;\n this.updateElements(points, 0, points.length, mode);\n }\n updateElements(points, start, count, mode) {\n const reset = mode === 'reset';\n const {iScale, vScale} = this._cachedMeta;\n const {sharedOptions, includeOptions} = this._getSharedOptions(start, mode);\n const iAxis = iScale.axis;\n const vAxis = vScale.axis;\n for (let i = start; i < start + count; i++) {\n const point = points[i];\n const parsed = !reset && this.getParsed(i);\n const properties = {};\n const iPixel = properties[iAxis] = reset ? iScale.getPixelForDecimal(0.5) : iScale.getPixelForValue(parsed[iAxis]);\n const vPixel = properties[vAxis] = reset ? vScale.getBasePixel() : vScale.getPixelForValue(parsed[vAxis]);\n properties.skip = isNaN(iPixel) || isNaN(vPixel);\n if (includeOptions) {\n properties.options = sharedOptions || this.resolveDataElementOptions(i, point.active ? 'active' : mode);\n if (reset) {\n properties.options.radius = 0;\n }\n }\n this.updateElement(point, i, properties, mode);\n }\n }\n resolveDataElementOptions(index, mode) {\n const parsed = this.getParsed(index);\n let values = super.resolveDataElementOptions(index, mode);\n if (values.$shared) {\n values = Object.assign({}, values, {$shared: false});\n }\n const radius = values.radius;\n if (mode !== 'active') {\n values.radius = 0;\n }\n values.radius += valueOrDefault(parsed && parsed._custom, radius);\n return values;\n }\n}\nBubbleController.id = 'bubble';\nBubbleController.defaults = {\n datasetElementType: false,\n dataElementType: 'point',\n animations: {\n numbers: {\n type: 'number',\n properties: ['x', 'y', 'borderWidth', 'radius']\n }\n }\n};\nBubbleController.overrides = {\n scales: {\n x: {\n type: 'linear'\n },\n y: {\n type: 'linear'\n }\n },\n plugins: {\n tooltip: {\n callbacks: {\n title() {\n return '';\n }\n }\n }\n }\n};\n\nfunction getRatioAndOffset(rotation, circumference, cutout) {\n let ratioX = 1;\n let ratioY = 1;\n let offsetX = 0;\n let offsetY = 0;\n if (circumference < TAU) {\n const startAngle = rotation;\n const endAngle = startAngle + circumference;\n const startX = Math.cos(startAngle);\n const startY = Math.sin(startAngle);\n const endX = Math.cos(endAngle);\n const endY = Math.sin(endAngle);\n const calcMax = (angle, a, b) => _angleBetween(angle, startAngle, endAngle, true) ? 1 : Math.max(a, a * cutout, b, b * cutout);\n const calcMin = (angle, a, b) => _angleBetween(angle, startAngle, endAngle, true) ? -1 : Math.min(a, a * cutout, b, b * cutout);\n const maxX = calcMax(0, startX, endX);\n const maxY = calcMax(HALF_PI, startY, endY);\n const minX = calcMin(PI, startX, endX);\n const minY = calcMin(PI + HALF_PI, startY, endY);\n ratioX = (maxX - minX) / 2;\n ratioY = (maxY - minY) / 2;\n offsetX = -(maxX + minX) / 2;\n offsetY = -(maxY + minY) / 2;\n }\n return {ratioX, ratioY, offsetX, offsetY};\n}\nclass DoughnutController extends DatasetController {\n constructor(chart, datasetIndex) {\n super(chart, datasetIndex);\n this.enableOptionSharing = true;\n this.innerRadius = undefined;\n this.outerRadius = undefined;\n this.offsetX = undefined;\n this.offsetY = undefined;\n }\n linkScales() {}\n parse(start, count) {\n const data = this.getDataset().data;\n const meta = this._cachedMeta;\n if (this._parsing === false) {\n meta._parsed = data;\n } else {\n let getter = (i) => +data[i];\n if (isObject(data[start])) {\n const {key = 'value'} = this._parsing;\n getter = (i) => +resolveObjectKey(data[i], key);\n }\n let i, ilen;\n for (i = start, ilen = start + count; i < ilen; ++i) {\n meta._parsed[i] = getter(i);\n }\n }\n }\n _getRotation() {\n return toRadians(this.options.rotation - 90);\n }\n _getCircumference() {\n return toRadians(this.options.circumference);\n }\n _getRotationExtents() {\n let min = TAU;\n let max = -TAU;\n for (let i = 0; i < this.chart.data.datasets.length; ++i) {\n if (this.chart.isDatasetVisible(i)) {\n const controller = this.chart.getDatasetMeta(i).controller;\n const rotation = controller._getRotation();\n const circumference = controller._getCircumference();\n min = Math.min(min, rotation);\n max = Math.max(max, rotation + circumference);\n }\n }\n return {\n rotation: min,\n circumference: max - min,\n };\n }\n update(mode) {\n const chart = this.chart;\n const {chartArea} = chart;\n const meta = this._cachedMeta;\n const arcs = meta.data;\n const spacing = this.getMaxBorderWidth() + this.getMaxOffset(arcs) + this.options.spacing;\n const maxSize = Math.max((Math.min(chartArea.width, chartArea.height) - spacing) / 2, 0);\n const cutout = Math.min(toPercentage(this.options.cutout, maxSize), 1);\n const chartWeight = this._getRingWeight(this.index);\n const {circumference, rotation} = this._getRotationExtents();\n const {ratioX, ratioY, offsetX, offsetY} = getRatioAndOffset(rotation, circumference, cutout);\n const maxWidth = (chartArea.width - spacing) / ratioX;\n const maxHeight = (chartArea.height - spacing) / ratioY;\n const maxRadius = Math.max(Math.min(maxWidth, maxHeight) / 2, 0);\n const outerRadius = toDimension(this.options.radius, maxRadius);\n const innerRadius = Math.max(outerRadius * cutout, 0);\n const radiusLength = (outerRadius - innerRadius) / this._getVisibleDatasetWeightTotal();\n this.offsetX = offsetX * outerRadius;\n this.offsetY = offsetY * outerRadius;\n meta.total = this.calculateTotal();\n this.outerRadius = outerRadius - radiusLength * this._getRingWeightOffset(this.index);\n this.innerRadius = Math.max(this.outerRadius - radiusLength * chartWeight, 0);\n this.updateElements(arcs, 0, arcs.length, mode);\n }\n _circumference(i, reset) {\n const opts = this.options;\n const meta = this._cachedMeta;\n const circumference = this._getCircumference();\n if ((reset && opts.animation.animateRotate) || !this.chart.getDataVisibility(i) || meta._parsed[i] === null || meta.data[i].hidden) {\n return 0;\n }\n return this.calculateCircumference(meta._parsed[i] * circumference / TAU);\n }\n updateElements(arcs, start, count, mode) {\n const reset = mode === 'reset';\n const chart = this.chart;\n const chartArea = chart.chartArea;\n const opts = chart.options;\n const animationOpts = opts.animation;\n const centerX = (chartArea.left + chartArea.right) / 2;\n const centerY = (chartArea.top + chartArea.bottom) / 2;\n const animateScale = reset && animationOpts.animateScale;\n const innerRadius = animateScale ? 0 : this.innerRadius;\n const outerRadius = animateScale ? 0 : this.outerRadius;\n const {sharedOptions, includeOptions} = this._getSharedOptions(start, mode);\n let startAngle = this._getRotation();\n let i;\n for (i = 0; i < start; ++i) {\n startAngle += this._circumference(i, reset);\n }\n for (i = start; i < start + count; ++i) {\n const circumference = this._circumference(i, reset);\n const arc = arcs[i];\n const properties = {\n x: centerX + this.offsetX,\n y: centerY + this.offsetY,\n startAngle,\n endAngle: startAngle + circumference,\n circumference,\n outerRadius,\n innerRadius\n };\n if (includeOptions) {\n properties.options = sharedOptions || this.resolveDataElementOptions(i, arc.active ? 'active' : mode);\n }\n startAngle += circumference;\n this.updateElement(arc, i, properties, mode);\n }\n }\n calculateTotal() {\n const meta = this._cachedMeta;\n const metaData = meta.data;\n let total = 0;\n let i;\n for (i = 0; i < metaData.length; i++) {\n const value = meta._parsed[i];\n if (value !== null && !isNaN(value) && this.chart.getDataVisibility(i) && !metaData[i].hidden) {\n total += Math.abs(value);\n }\n }\n return total;\n }\n calculateCircumference(value) {\n const total = this._cachedMeta.total;\n if (total > 0 && !isNaN(value)) {\n return TAU * (Math.abs(value) / total);\n }\n return 0;\n }\n getLabelAndValue(index) {\n const meta = this._cachedMeta;\n const chart = this.chart;\n const labels = chart.data.labels || [];\n const value = formatNumber(meta._parsed[index], chart.options.locale);\n return {\n label: labels[index] || '',\n value,\n };\n }\n getMaxBorderWidth(arcs) {\n let max = 0;\n const chart = this.chart;\n let i, ilen, meta, controller, options;\n if (!arcs) {\n for (i = 0, ilen = chart.data.datasets.length; i < ilen; ++i) {\n if (chart.isDatasetVisible(i)) {\n meta = chart.getDatasetMeta(i);\n arcs = meta.data;\n controller = meta.controller;\n break;\n }\n }\n }\n if (!arcs) {\n return 0;\n }\n for (i = 0, ilen = arcs.length; i < ilen; ++i) {\n options = controller.resolveDataElementOptions(i);\n if (options.borderAlign !== 'inner') {\n max = Math.max(max, options.borderWidth || 0, options.hoverBorderWidth || 0);\n }\n }\n return max;\n }\n getMaxOffset(arcs) {\n let max = 0;\n for (let i = 0, ilen = arcs.length; i < ilen; ++i) {\n const options = this.resolveDataElementOptions(i);\n max = Math.max(max, options.offset || 0, options.hoverOffset || 0);\n }\n return max;\n }\n _getRingWeightOffset(datasetIndex) {\n let ringWeightOffset = 0;\n for (let i = 0; i < datasetIndex; ++i) {\n if (this.chart.isDatasetVisible(i)) {\n ringWeightOffset += this._getRingWeight(i);\n }\n }\n return ringWeightOffset;\n }\n _getRingWeight(datasetIndex) {\n return Math.max(valueOrDefault(this.chart.data.datasets[datasetIndex].weight, 1), 0);\n }\n _getVisibleDatasetWeightTotal() {\n return this._getRingWeightOffset(this.chart.data.datasets.length) || 1;\n }\n}\nDoughnutController.id = 'doughnut';\nDoughnutController.defaults = {\n datasetElementType: false,\n dataElementType: 'arc',\n animation: {\n animateRotate: true,\n animateScale: false\n },\n animations: {\n numbers: {\n type: 'number',\n properties: ['circumference', 'endAngle', 'innerRadius', 'outerRadius', 'startAngle', 'x', 'y', 'offset', 'borderWidth', 'spacing']\n },\n },\n cutout: '50%',\n rotation: 0,\n circumference: 360,\n radius: '100%',\n spacing: 0,\n indexAxis: 'r',\n};\nDoughnutController.descriptors = {\n _scriptable: (name) => name !== 'spacing',\n _indexable: (name) => name !== 'spacing',\n};\nDoughnutController.overrides = {\n aspectRatio: 1,\n plugins: {\n legend: {\n labels: {\n generateLabels(chart) {\n const data = chart.data;\n if (data.labels.length && data.datasets.length) {\n const {labels: {pointStyle}} = chart.legend.options;\n return data.labels.map((label, i) => {\n const meta = chart.getDatasetMeta(0);\n const style = meta.controller.getStyle(i);\n return {\n text: label,\n fillStyle: style.backgroundColor,\n strokeStyle: style.borderColor,\n lineWidth: style.borderWidth,\n pointStyle: pointStyle,\n hidden: !chart.getDataVisibility(i),\n index: i\n };\n });\n }\n return [];\n }\n },\n onClick(e, legendItem, legend) {\n legend.chart.toggleDataVisibility(legendItem.index);\n legend.chart.update();\n }\n },\n tooltip: {\n callbacks: {\n title() {\n return '';\n },\n label(tooltipItem) {\n let dataLabel = tooltipItem.label;\n const value = ': ' + tooltipItem.formattedValue;\n if (isArray(dataLabel)) {\n dataLabel = dataLabel.slice();\n dataLabel[0] += value;\n } else {\n dataLabel += value;\n }\n return dataLabel;\n }\n }\n }\n }\n};\n\nclass LineController extends DatasetController {\n initialize() {\n this.enableOptionSharing = true;\n this.supportsDecimation = true;\n super.initialize();\n }\n update(mode) {\n const meta = this._cachedMeta;\n const {dataset: line, data: points = [], _dataset} = meta;\n const animationsDisabled = this.chart._animationsDisabled;\n let {start, count} = _getStartAndCountOfVisiblePoints(meta, points, animationsDisabled);\n this._drawStart = start;\n this._drawCount = count;\n if (_scaleRangesChanged(meta)) {\n start = 0;\n count = points.length;\n }\n line._chart = this.chart;\n line._datasetIndex = this.index;\n line._decimated = !!_dataset._decimated;\n line.points = points;\n const options = this.resolveDatasetElementOptions(mode);\n if (!this.options.showLine) {\n options.borderWidth = 0;\n }\n options.segment = this.options.segment;\n this.updateElement(line, undefined, {\n animated: !animationsDisabled,\n options\n }, mode);\n this.updateElements(points, start, count, mode);\n }\n updateElements(points, start, count, mode) {\n const reset = mode === 'reset';\n const {iScale, vScale, _stacked, _dataset} = this._cachedMeta;\n const {sharedOptions, includeOptions} = this._getSharedOptions(start, mode);\n const iAxis = iScale.axis;\n const vAxis = vScale.axis;\n const {spanGaps, segment} = this.options;\n const maxGapLength = isNumber(spanGaps) ? spanGaps : Number.POSITIVE_INFINITY;\n const directUpdate = this.chart._animationsDisabled || reset || mode === 'none';\n let prevParsed = start > 0 && this.getParsed(start - 1);\n for (let i = start; i < start + count; ++i) {\n const point = points[i];\n const parsed = this.getParsed(i);\n const properties = directUpdate ? point : {};\n const nullData = isNullOrUndef(parsed[vAxis]);\n const iPixel = properties[iAxis] = iScale.getPixelForValue(parsed[iAxis], i);\n const vPixel = properties[vAxis] = reset || nullData ? vScale.getBasePixel() : vScale.getPixelForValue(_stacked ? this.applyStack(vScale, parsed, _stacked) : parsed[vAxis], i);\n properties.skip = isNaN(iPixel) || isNaN(vPixel) || nullData;\n properties.stop = i > 0 && (Math.abs(parsed[iAxis] - prevParsed[iAxis])) > maxGapLength;\n if (segment) {\n properties.parsed = parsed;\n properties.raw = _dataset.data[i];\n }\n if (includeOptions) {\n properties.options = sharedOptions || this.resolveDataElementOptions(i, point.active ? 'active' : mode);\n }\n if (!directUpdate) {\n this.updateElement(point, i, properties, mode);\n }\n prevParsed = parsed;\n }\n }\n getMaxOverflow() {\n const meta = this._cachedMeta;\n const dataset = meta.dataset;\n const border = dataset.options && dataset.options.borderWidth || 0;\n const data = meta.data || [];\n if (!data.length) {\n return border;\n }\n const firstPoint = data[0].size(this.resolveDataElementOptions(0));\n const lastPoint = data[data.length - 1].size(this.resolveDataElementOptions(data.length - 1));\n return Math.max(border, firstPoint, lastPoint) / 2;\n }\n draw() {\n const meta = this._cachedMeta;\n meta.dataset.updateControlPoints(this.chart.chartArea, meta.iScale.axis);\n super.draw();\n }\n}\nLineController.id = 'line';\nLineController.defaults = {\n datasetElementType: 'line',\n dataElementType: 'point',\n showLine: true,\n spanGaps: false,\n};\nLineController.overrides = {\n scales: {\n _index_: {\n type: 'category',\n },\n _value_: {\n type: 'linear',\n },\n }\n};\n\nclass PolarAreaController extends DatasetController {\n constructor(chart, datasetIndex) {\n super(chart, datasetIndex);\n this.innerRadius = undefined;\n this.outerRadius = undefined;\n }\n getLabelAndValue(index) {\n const meta = this._cachedMeta;\n const chart = this.chart;\n const labels = chart.data.labels || [];\n const value = formatNumber(meta._parsed[index].r, chart.options.locale);\n return {\n label: labels[index] || '',\n value,\n };\n }\n parseObjectData(meta, data, start, count) {\n return _parseObjectDataRadialScale.bind(this)(meta, data, start, count);\n }\n update(mode) {\n const arcs = this._cachedMeta.data;\n this._updateRadius();\n this.updateElements(arcs, 0, arcs.length, mode);\n }\n getMinMax() {\n const meta = this._cachedMeta;\n const range = {min: Number.POSITIVE_INFINITY, max: Number.NEGATIVE_INFINITY};\n meta.data.forEach((element, index) => {\n const parsed = this.getParsed(index).r;\n if (!isNaN(parsed) && this.chart.getDataVisibility(index)) {\n if (parsed < range.min) {\n range.min = parsed;\n }\n if (parsed > range.max) {\n range.max = parsed;\n }\n }\n });\n return range;\n }\n _updateRadius() {\n const chart = this.chart;\n const chartArea = chart.chartArea;\n const opts = chart.options;\n const minSize = Math.min(chartArea.right - chartArea.left, chartArea.bottom - chartArea.top);\n const outerRadius = Math.max(minSize / 2, 0);\n const innerRadius = Math.max(opts.cutoutPercentage ? (outerRadius / 100) * (opts.cutoutPercentage) : 1, 0);\n const radiusLength = (outerRadius - innerRadius) / chart.getVisibleDatasetCount();\n this.outerRadius = outerRadius - (radiusLength * this.index);\n this.innerRadius = this.outerRadius - radiusLength;\n }\n updateElements(arcs, start, count, mode) {\n const reset = mode === 'reset';\n const chart = this.chart;\n const opts = chart.options;\n const animationOpts = opts.animation;\n const scale = this._cachedMeta.rScale;\n const centerX = scale.xCenter;\n const centerY = scale.yCenter;\n const datasetStartAngle = scale.getIndexAngle(0) - 0.5 * PI;\n let angle = datasetStartAngle;\n let i;\n const defaultAngle = 360 / this.countVisibleElements();\n for (i = 0; i < start; ++i) {\n angle += this._computeAngle(i, mode, defaultAngle);\n }\n for (i = start; i < start + count; i++) {\n const arc = arcs[i];\n let startAngle = angle;\n let endAngle = angle + this._computeAngle(i, mode, defaultAngle);\n let outerRadius = chart.getDataVisibility(i) ? scale.getDistanceFromCenterForValue(this.getParsed(i).r) : 0;\n angle = endAngle;\n if (reset) {\n if (animationOpts.animateScale) {\n outerRadius = 0;\n }\n if (animationOpts.animateRotate) {\n startAngle = endAngle = datasetStartAngle;\n }\n }\n const properties = {\n x: centerX,\n y: centerY,\n innerRadius: 0,\n outerRadius,\n startAngle,\n endAngle,\n options: this.resolveDataElementOptions(i, arc.active ? 'active' : mode)\n };\n this.updateElement(arc, i, properties, mode);\n }\n }\n countVisibleElements() {\n const meta = this._cachedMeta;\n let count = 0;\n meta.data.forEach((element, index) => {\n if (!isNaN(this.getParsed(index).r) && this.chart.getDataVisibility(index)) {\n count++;\n }\n });\n return count;\n }\n _computeAngle(index, mode, defaultAngle) {\n return this.chart.getDataVisibility(index)\n ? toRadians(this.resolveDataElementOptions(index, mode).angle || defaultAngle)\n : 0;\n }\n}\nPolarAreaController.id = 'polarArea';\nPolarAreaController.defaults = {\n dataElementType: 'arc',\n animation: {\n animateRotate: true,\n animateScale: true\n },\n animations: {\n numbers: {\n type: 'number',\n properties: ['x', 'y', 'startAngle', 'endAngle', 'innerRadius', 'outerRadius']\n },\n },\n indexAxis: 'r',\n startAngle: 0,\n};\nPolarAreaController.overrides = {\n aspectRatio: 1,\n plugins: {\n legend: {\n labels: {\n generateLabels(chart) {\n const data = chart.data;\n if (data.labels.length && data.datasets.length) {\n const {labels: {pointStyle}} = chart.legend.options;\n return data.labels.map((label, i) => {\n const meta = chart.getDatasetMeta(0);\n const style = meta.controller.getStyle(i);\n return {\n text: label,\n fillStyle: style.backgroundColor,\n strokeStyle: style.borderColor,\n lineWidth: style.borderWidth,\n pointStyle: pointStyle,\n hidden: !chart.getDataVisibility(i),\n index: i\n };\n });\n }\n return [];\n }\n },\n onClick(e, legendItem, legend) {\n legend.chart.toggleDataVisibility(legendItem.index);\n legend.chart.update();\n }\n },\n tooltip: {\n callbacks: {\n title() {\n return '';\n },\n label(context) {\n return context.chart.data.labels[context.dataIndex] + ': ' + context.formattedValue;\n }\n }\n }\n },\n scales: {\n r: {\n type: 'radialLinear',\n angleLines: {\n display: false\n },\n beginAtZero: true,\n grid: {\n circular: true\n },\n pointLabels: {\n display: false\n },\n startAngle: 0\n }\n }\n};\n\nclass PieController extends DoughnutController {\n}\nPieController.id = 'pie';\nPieController.defaults = {\n cutout: 0,\n rotation: 0,\n circumference: 360,\n radius: '100%'\n};\n\nclass RadarController extends DatasetController {\n getLabelAndValue(index) {\n const vScale = this._cachedMeta.vScale;\n const parsed = this.getParsed(index);\n return {\n label: vScale.getLabels()[index],\n value: '' + vScale.getLabelForValue(parsed[vScale.axis])\n };\n }\n parseObjectData(meta, data, start, count) {\n return _parseObjectDataRadialScale.bind(this)(meta, data, start, count);\n }\n update(mode) {\n const meta = this._cachedMeta;\n const line = meta.dataset;\n const points = meta.data || [];\n const labels = meta.iScale.getLabels();\n line.points = points;\n if (mode !== 'resize') {\n const options = this.resolveDatasetElementOptions(mode);\n if (!this.options.showLine) {\n options.borderWidth = 0;\n }\n const properties = {\n _loop: true,\n _fullLoop: labels.length === points.length,\n options\n };\n this.updateElement(line, undefined, properties, mode);\n }\n this.updateElements(points, 0, points.length, mode);\n }\n updateElements(points, start, count, mode) {\n const scale = this._cachedMeta.rScale;\n const reset = mode === 'reset';\n for (let i = start; i < start + count; i++) {\n const point = points[i];\n const options = this.resolveDataElementOptions(i, point.active ? 'active' : mode);\n const pointPosition = scale.getPointPositionForValue(i, this.getParsed(i).r);\n const x = reset ? scale.xCenter : pointPosition.x;\n const y = reset ? scale.yCenter : pointPosition.y;\n const properties = {\n x,\n y,\n angle: pointPosition.angle,\n skip: isNaN(x) || isNaN(y),\n options\n };\n this.updateElement(point, i, properties, mode);\n }\n }\n}\nRadarController.id = 'radar';\nRadarController.defaults = {\n datasetElementType: 'line',\n dataElementType: 'point',\n indexAxis: 'r',\n showLine: true,\n elements: {\n line: {\n fill: 'start'\n }\n },\n};\nRadarController.overrides = {\n aspectRatio: 1,\n scales: {\n r: {\n type: 'radialLinear',\n }\n }\n};\n\nclass Element {\n constructor() {\n this.x = undefined;\n this.y = undefined;\n this.active = false;\n this.options = undefined;\n this.$animations = undefined;\n }\n tooltipPosition(useFinalPosition) {\n const {x, y} = this.getProps(['x', 'y'], useFinalPosition);\n return {x, y};\n }\n hasValue() {\n return isNumber(this.x) && isNumber(this.y);\n }\n getProps(props, final) {\n const anims = this.$animations;\n if (!final || !anims) {\n return this;\n }\n const ret = {};\n props.forEach(prop => {\n ret[prop] = anims[prop] && anims[prop].active() ? anims[prop]._to : this[prop];\n });\n return ret;\n }\n}\nElement.defaults = {};\nElement.defaultRoutes = undefined;\n\nconst formatters = {\n values(value) {\n return isArray(value) ? value : '' + value;\n },\n numeric(tickValue, index, ticks) {\n if (tickValue === 0) {\n return '0';\n }\n const locale = this.chart.options.locale;\n let notation;\n let delta = tickValue;\n if (ticks.length > 1) {\n const maxTick = Math.max(Math.abs(ticks[0].value), Math.abs(ticks[ticks.length - 1].value));\n if (maxTick < 1e-4 || maxTick > 1e+15) {\n notation = 'scientific';\n }\n delta = calculateDelta(tickValue, ticks);\n }\n const logDelta = log10(Math.abs(delta));\n const numDecimal = Math.max(Math.min(-1 * Math.floor(logDelta), 20), 0);\n const options = {notation, minimumFractionDigits: numDecimal, maximumFractionDigits: numDecimal};\n Object.assign(options, this.options.ticks.format);\n return formatNumber(tickValue, locale, options);\n },\n logarithmic(tickValue, index, ticks) {\n if (tickValue === 0) {\n return '0';\n }\n const remain = tickValue / (Math.pow(10, Math.floor(log10(tickValue))));\n if (remain === 1 || remain === 2 || remain === 5) {\n return formatters.numeric.call(this, tickValue, index, ticks);\n }\n return '';\n }\n};\nfunction calculateDelta(tickValue, ticks) {\n let delta = ticks.length > 3 ? ticks[2].value - ticks[1].value : ticks[1].value - ticks[0].value;\n if (Math.abs(delta) >= 1 && tickValue !== Math.floor(tickValue)) {\n delta = tickValue - Math.floor(tickValue);\n }\n return delta;\n}\nvar Ticks = {formatters};\n\ndefaults.set('scale', {\n display: true,\n offset: false,\n reverse: false,\n beginAtZero: false,\n bounds: 'ticks',\n grace: 0,\n grid: {\n display: true,\n lineWidth: 1,\n drawBorder: true,\n drawOnChartArea: true,\n drawTicks: true,\n tickLength: 8,\n tickWidth: (_ctx, options) => options.lineWidth,\n tickColor: (_ctx, options) => options.color,\n offset: false,\n borderDash: [],\n borderDashOffset: 0.0,\n borderWidth: 1\n },\n title: {\n display: false,\n text: '',\n padding: {\n top: 4,\n bottom: 4\n }\n },\n ticks: {\n minRotation: 0,\n maxRotation: 50,\n mirror: false,\n textStrokeWidth: 0,\n textStrokeColor: '',\n padding: 3,\n display: true,\n autoSkip: true,\n autoSkipPadding: 3,\n labelOffset: 0,\n callback: Ticks.formatters.values,\n minor: {},\n major: {},\n align: 'center',\n crossAlign: 'near',\n showLabelBackdrop: false,\n backdropColor: 'rgba(255, 255, 255, 0.75)',\n backdropPadding: 2,\n }\n});\ndefaults.route('scale.ticks', 'color', '', 'color');\ndefaults.route('scale.grid', 'color', '', 'borderColor');\ndefaults.route('scale.grid', 'borderColor', '', 'borderColor');\ndefaults.route('scale.title', 'color', '', 'color');\ndefaults.describe('scale', {\n _fallback: false,\n _scriptable: (name) => !name.startsWith('before') && !name.startsWith('after') && name !== 'callback' && name !== 'parser',\n _indexable: (name) => name !== 'borderDash' && name !== 'tickBorderDash',\n});\ndefaults.describe('scales', {\n _fallback: 'scale',\n});\ndefaults.describe('scale.ticks', {\n _scriptable: (name) => name !== 'backdropPadding' && name !== 'callback',\n _indexable: (name) => name !== 'backdropPadding',\n});\n\nfunction autoSkip(scale, ticks) {\n const tickOpts = scale.options.ticks;\n const ticksLimit = tickOpts.maxTicksLimit || determineMaxTicks(scale);\n const majorIndices = tickOpts.major.enabled ? getMajorIndices(ticks) : [];\n const numMajorIndices = majorIndices.length;\n const first = majorIndices[0];\n const last = majorIndices[numMajorIndices - 1];\n const newTicks = [];\n if (numMajorIndices > ticksLimit) {\n skipMajors(ticks, newTicks, majorIndices, numMajorIndices / ticksLimit);\n return newTicks;\n }\n const spacing = calculateSpacing(majorIndices, ticks, ticksLimit);\n if (numMajorIndices > 0) {\n let i, ilen;\n const avgMajorSpacing = numMajorIndices > 1 ? Math.round((last - first) / (numMajorIndices - 1)) : null;\n skip(ticks, newTicks, spacing, isNullOrUndef(avgMajorSpacing) ? 0 : first - avgMajorSpacing, first);\n for (i = 0, ilen = numMajorIndices - 1; i < ilen; i++) {\n skip(ticks, newTicks, spacing, majorIndices[i], majorIndices[i + 1]);\n }\n skip(ticks, newTicks, spacing, last, isNullOrUndef(avgMajorSpacing) ? ticks.length : last + avgMajorSpacing);\n return newTicks;\n }\n skip(ticks, newTicks, spacing);\n return newTicks;\n}\nfunction determineMaxTicks(scale) {\n const offset = scale.options.offset;\n const tickLength = scale._tickSize();\n const maxScale = scale._length / tickLength + (offset ? 0 : 1);\n const maxChart = scale._maxLength / tickLength;\n return Math.floor(Math.min(maxScale, maxChart));\n}\nfunction calculateSpacing(majorIndices, ticks, ticksLimit) {\n const evenMajorSpacing = getEvenSpacing(majorIndices);\n const spacing = ticks.length / ticksLimit;\n if (!evenMajorSpacing) {\n return Math.max(spacing, 1);\n }\n const factors = _factorize(evenMajorSpacing);\n for (let i = 0, ilen = factors.length - 1; i < ilen; i++) {\n const factor = factors[i];\n if (factor > spacing) {\n return factor;\n }\n }\n return Math.max(spacing, 1);\n}\nfunction getMajorIndices(ticks) {\n const result = [];\n let i, ilen;\n for (i = 0, ilen = ticks.length; i < ilen; i++) {\n if (ticks[i].major) {\n result.push(i);\n }\n }\n return result;\n}\nfunction skipMajors(ticks, newTicks, majorIndices, spacing) {\n let count = 0;\n let next = majorIndices[0];\n let i;\n spacing = Math.ceil(spacing);\n for (i = 0; i < ticks.length; i++) {\n if (i === next) {\n newTicks.push(ticks[i]);\n count++;\n next = majorIndices[count * spacing];\n }\n }\n}\nfunction skip(ticks, newTicks, spacing, majorStart, majorEnd) {\n const start = valueOrDefault(majorStart, 0);\n const end = Math.min(valueOrDefault(majorEnd, ticks.length), ticks.length);\n let count = 0;\n let length, i, next;\n spacing = Math.ceil(spacing);\n if (majorEnd) {\n length = majorEnd - majorStart;\n spacing = length / Math.floor(length / spacing);\n }\n next = start;\n while (next < 0) {\n count++;\n next = Math.round(start + count * spacing);\n }\n for (i = Math.max(start, 0); i < end; i++) {\n if (i === next) {\n newTicks.push(ticks[i]);\n count++;\n next = Math.round(start + count * spacing);\n }\n }\n}\nfunction getEvenSpacing(arr) {\n const len = arr.length;\n let i, diff;\n if (len < 2) {\n return false;\n }\n for (diff = arr[0], i = 1; i < len; ++i) {\n if (arr[i] - arr[i - 1] !== diff) {\n return false;\n }\n }\n return diff;\n}\n\nconst reverseAlign = (align) => align === 'left' ? 'right' : align === 'right' ? 'left' : align;\nconst offsetFromEdge = (scale, edge, offset) => edge === 'top' || edge === 'left' ? scale[edge] + offset : scale[edge] - offset;\nfunction sample(arr, numItems) {\n const result = [];\n const increment = arr.length / numItems;\n const len = arr.length;\n let i = 0;\n for (; i < len; i += increment) {\n result.push(arr[Math.floor(i)]);\n }\n return result;\n}\nfunction getPixelForGridLine(scale, index, offsetGridLines) {\n const length = scale.ticks.length;\n const validIndex = Math.min(index, length - 1);\n const start = scale._startPixel;\n const end = scale._endPixel;\n const epsilon = 1e-6;\n let lineValue = scale.getPixelForTick(validIndex);\n let offset;\n if (offsetGridLines) {\n if (length === 1) {\n offset = Math.max(lineValue - start, end - lineValue);\n } else if (index === 0) {\n offset = (scale.getPixelForTick(1) - lineValue) / 2;\n } else {\n offset = (lineValue - scale.getPixelForTick(validIndex - 1)) / 2;\n }\n lineValue += validIndex < index ? offset : -offset;\n if (lineValue < start - epsilon || lineValue > end + epsilon) {\n return;\n }\n }\n return lineValue;\n}\nfunction garbageCollect(caches, length) {\n each(caches, (cache) => {\n const gc = cache.gc;\n const gcLen = gc.length / 2;\n let i;\n if (gcLen > length) {\n for (i = 0; i < gcLen; ++i) {\n delete cache.data[gc[i]];\n }\n gc.splice(0, gcLen);\n }\n });\n}\nfunction getTickMarkLength(options) {\n return options.drawTicks ? options.tickLength : 0;\n}\nfunction getTitleHeight(options, fallback) {\n if (!options.display) {\n return 0;\n }\n const font = toFont(options.font, fallback);\n const padding = toPadding(options.padding);\n const lines = isArray(options.text) ? options.text.length : 1;\n return (lines * font.lineHeight) + padding.height;\n}\nfunction createScaleContext(parent, scale) {\n return createContext(parent, {\n scale,\n type: 'scale'\n });\n}\nfunction createTickContext(parent, index, tick) {\n return createContext(parent, {\n tick,\n index,\n type: 'tick'\n });\n}\nfunction titleAlign(align, position, reverse) {\n let ret = _toLeftRightCenter(align);\n if ((reverse && position !== 'right') || (!reverse && position === 'right')) {\n ret = reverseAlign(ret);\n }\n return ret;\n}\nfunction titleArgs(scale, offset, position, align) {\n const {top, left, bottom, right, chart} = scale;\n const {chartArea, scales} = chart;\n let rotation = 0;\n let maxWidth, titleX, titleY;\n const height = bottom - top;\n const width = right - left;\n if (scale.isHorizontal()) {\n titleX = _alignStartEnd(align, left, right);\n if (isObject(position)) {\n const positionAxisID = Object.keys(position)[0];\n const value = position[positionAxisID];\n titleY = scales[positionAxisID].getPixelForValue(value) + height - offset;\n } else if (position === 'center') {\n titleY = (chartArea.bottom + chartArea.top) / 2 + height - offset;\n } else {\n titleY = offsetFromEdge(scale, position, offset);\n }\n maxWidth = right - left;\n } else {\n if (isObject(position)) {\n const positionAxisID = Object.keys(position)[0];\n const value = position[positionAxisID];\n titleX = scales[positionAxisID].getPixelForValue(value) - width + offset;\n } else if (position === 'center') {\n titleX = (chartArea.left + chartArea.right) / 2 - width + offset;\n } else {\n titleX = offsetFromEdge(scale, position, offset);\n }\n titleY = _alignStartEnd(align, bottom, top);\n rotation = position === 'left' ? -HALF_PI : HALF_PI;\n }\n return {titleX, titleY, maxWidth, rotation};\n}\nclass Scale extends Element {\n constructor(cfg) {\n super();\n this.id = cfg.id;\n this.type = cfg.type;\n this.options = undefined;\n this.ctx = cfg.ctx;\n this.chart = cfg.chart;\n this.top = undefined;\n this.bottom = undefined;\n this.left = undefined;\n this.right = undefined;\n this.width = undefined;\n this.height = undefined;\n this._margins = {\n left: 0,\n right: 0,\n top: 0,\n bottom: 0\n };\n this.maxWidth = undefined;\n this.maxHeight = undefined;\n this.paddingTop = undefined;\n this.paddingBottom = undefined;\n this.paddingLeft = undefined;\n this.paddingRight = undefined;\n this.axis = undefined;\n this.labelRotation = undefined;\n this.min = undefined;\n this.max = undefined;\n this._range = undefined;\n this.ticks = [];\n this._gridLineItems = null;\n this._labelItems = null;\n this._labelSizes = null;\n this._length = 0;\n this._maxLength = 0;\n this._longestTextCache = {};\n this._startPixel = undefined;\n this._endPixel = undefined;\n this._reversePixels = false;\n this._userMax = undefined;\n this._userMin = undefined;\n this._suggestedMax = undefined;\n this._suggestedMin = undefined;\n this._ticksLength = 0;\n this._borderValue = 0;\n this._cache = {};\n this._dataLimitsCached = false;\n this.$context = undefined;\n }\n init(options) {\n this.options = options.setContext(this.getContext());\n this.axis = options.axis;\n this._userMin = this.parse(options.min);\n this._userMax = this.parse(options.max);\n this._suggestedMin = this.parse(options.suggestedMin);\n this._suggestedMax = this.parse(options.suggestedMax);\n }\n parse(raw, index) {\n return raw;\n }\n getUserBounds() {\n let {_userMin, _userMax, _suggestedMin, _suggestedMax} = this;\n _userMin = finiteOrDefault(_userMin, Number.POSITIVE_INFINITY);\n _userMax = finiteOrDefault(_userMax, Number.NEGATIVE_INFINITY);\n _suggestedMin = finiteOrDefault(_suggestedMin, Number.POSITIVE_INFINITY);\n _suggestedMax = finiteOrDefault(_suggestedMax, Number.NEGATIVE_INFINITY);\n return {\n min: finiteOrDefault(_userMin, _suggestedMin),\n max: finiteOrDefault(_userMax, _suggestedMax),\n minDefined: isNumberFinite(_userMin),\n maxDefined: isNumberFinite(_userMax)\n };\n }\n getMinMax(canStack) {\n let {min, max, minDefined, maxDefined} = this.getUserBounds();\n let range;\n if (minDefined && maxDefined) {\n return {min, max};\n }\n const metas = this.getMatchingVisibleMetas();\n for (let i = 0, ilen = metas.length; i < ilen; ++i) {\n range = metas[i].controller.getMinMax(this, canStack);\n if (!minDefined) {\n min = Math.min(min, range.min);\n }\n if (!maxDefined) {\n max = Math.max(max, range.max);\n }\n }\n min = maxDefined && min > max ? max : min;\n max = minDefined && min > max ? min : max;\n return {\n min: finiteOrDefault(min, finiteOrDefault(max, min)),\n max: finiteOrDefault(max, finiteOrDefault(min, max))\n };\n }\n getPadding() {\n return {\n left: this.paddingLeft || 0,\n top: this.paddingTop || 0,\n right: this.paddingRight || 0,\n bottom: this.paddingBottom || 0\n };\n }\n getTicks() {\n return this.ticks;\n }\n getLabels() {\n const data = this.chart.data;\n return this.options.labels || (this.isHorizontal() ? data.xLabels : data.yLabels) || data.labels || [];\n }\n beforeLayout() {\n this._cache = {};\n this._dataLimitsCached = false;\n }\n beforeUpdate() {\n callback(this.options.beforeUpdate, [this]);\n }\n update(maxWidth, maxHeight, margins) {\n const {beginAtZero, grace, ticks: tickOpts} = this.options;\n const sampleSize = tickOpts.sampleSize;\n this.beforeUpdate();\n this.maxWidth = maxWidth;\n this.maxHeight = maxHeight;\n this._margins = margins = Object.assign({\n left: 0,\n right: 0,\n top: 0,\n bottom: 0\n }, margins);\n this.ticks = null;\n this._labelSizes = null;\n this._gridLineItems = null;\n this._labelItems = null;\n this.beforeSetDimensions();\n this.setDimensions();\n this.afterSetDimensions();\n this._maxLength = this.isHorizontal()\n ? this.width + margins.left + margins.right\n : this.height + margins.top + margins.bottom;\n if (!this._dataLimitsCached) {\n this.beforeDataLimits();\n this.determineDataLimits();\n this.afterDataLimits();\n this._range = _addGrace(this, grace, beginAtZero);\n this._dataLimitsCached = true;\n }\n this.beforeBuildTicks();\n this.ticks = this.buildTicks() || [];\n this.afterBuildTicks();\n const samplingEnabled = sampleSize < this.ticks.length;\n this._convertTicksToLabels(samplingEnabled ? sample(this.ticks, sampleSize) : this.ticks);\n this.configure();\n this.beforeCalculateLabelRotation();\n this.calculateLabelRotation();\n this.afterCalculateLabelRotation();\n if (tickOpts.display && (tickOpts.autoSkip || tickOpts.source === 'auto')) {\n this.ticks = autoSkip(this, this.ticks);\n this._labelSizes = null;\n this.afterAutoSkip();\n }\n if (samplingEnabled) {\n this._convertTicksToLabels(this.ticks);\n }\n this.beforeFit();\n this.fit();\n this.afterFit();\n this.afterUpdate();\n }\n configure() {\n let reversePixels = this.options.reverse;\n let startPixel, endPixel;\n if (this.isHorizontal()) {\n startPixel = this.left;\n endPixel = this.right;\n } else {\n startPixel = this.top;\n endPixel = this.bottom;\n reversePixels = !reversePixels;\n }\n this._startPixel = startPixel;\n this._endPixel = endPixel;\n this._reversePixels = reversePixels;\n this._length = endPixel - startPixel;\n this._alignToPixels = this.options.alignToPixels;\n }\n afterUpdate() {\n callback(this.options.afterUpdate, [this]);\n }\n beforeSetDimensions() {\n callback(this.options.beforeSetDimensions, [this]);\n }\n setDimensions() {\n if (this.isHorizontal()) {\n this.width = this.maxWidth;\n this.left = 0;\n this.right = this.width;\n } else {\n this.height = this.maxHeight;\n this.top = 0;\n this.bottom = this.height;\n }\n this.paddingLeft = 0;\n this.paddingTop = 0;\n this.paddingRight = 0;\n this.paddingBottom = 0;\n }\n afterSetDimensions() {\n callback(this.options.afterSetDimensions, [this]);\n }\n _callHooks(name) {\n this.chart.notifyPlugins(name, this.getContext());\n callback(this.options[name], [this]);\n }\n beforeDataLimits() {\n this._callHooks('beforeDataLimits');\n }\n determineDataLimits() {}\n afterDataLimits() {\n this._callHooks('afterDataLimits');\n }\n beforeBuildTicks() {\n this._callHooks('beforeBuildTicks');\n }\n buildTicks() {\n return [];\n }\n afterBuildTicks() {\n this._callHooks('afterBuildTicks');\n }\n beforeTickToLabelConversion() {\n callback(this.options.beforeTickToLabelConversion, [this]);\n }\n generateTickLabels(ticks) {\n const tickOpts = this.options.ticks;\n let i, ilen, tick;\n for (i = 0, ilen = ticks.length; i < ilen; i++) {\n tick = ticks[i];\n tick.label = callback(tickOpts.callback, [tick.value, i, ticks], this);\n }\n }\n afterTickToLabelConversion() {\n callback(this.options.afterTickToLabelConversion, [this]);\n }\n beforeCalculateLabelRotation() {\n callback(this.options.beforeCalculateLabelRotation, [this]);\n }\n calculateLabelRotation() {\n const options = this.options;\n const tickOpts = options.ticks;\n const numTicks = this.ticks.length;\n const minRotation = tickOpts.minRotation || 0;\n const maxRotation = tickOpts.maxRotation;\n let labelRotation = minRotation;\n let tickWidth, maxHeight, maxLabelDiagonal;\n if (!this._isVisible() || !tickOpts.display || minRotation >= maxRotation || numTicks <= 1 || !this.isHorizontal()) {\n this.labelRotation = minRotation;\n return;\n }\n const labelSizes = this._getLabelSizes();\n const maxLabelWidth = labelSizes.widest.width;\n const maxLabelHeight = labelSizes.highest.height;\n const maxWidth = _limitValue(this.chart.width - maxLabelWidth, 0, this.maxWidth);\n tickWidth = options.offset ? this.maxWidth / numTicks : maxWidth / (numTicks - 1);\n if (maxLabelWidth + 6 > tickWidth) {\n tickWidth = maxWidth / (numTicks - (options.offset ? 0.5 : 1));\n maxHeight = this.maxHeight - getTickMarkLength(options.grid)\n\t\t\t\t- tickOpts.padding - getTitleHeight(options.title, this.chart.options.font);\n maxLabelDiagonal = Math.sqrt(maxLabelWidth * maxLabelWidth + maxLabelHeight * maxLabelHeight);\n labelRotation = toDegrees(Math.min(\n Math.asin(_limitValue((labelSizes.highest.height + 6) / tickWidth, -1, 1)),\n Math.asin(_limitValue(maxHeight / maxLabelDiagonal, -1, 1)) - Math.asin(_limitValue(maxLabelHeight / maxLabelDiagonal, -1, 1))\n ));\n labelRotation = Math.max(minRotation, Math.min(maxRotation, labelRotation));\n }\n this.labelRotation = labelRotation;\n }\n afterCalculateLabelRotation() {\n callback(this.options.afterCalculateLabelRotation, [this]);\n }\n afterAutoSkip() {}\n beforeFit() {\n callback(this.options.beforeFit, [this]);\n }\n fit() {\n const minSize = {\n width: 0,\n height: 0\n };\n const {chart, options: {ticks: tickOpts, title: titleOpts, grid: gridOpts}} = this;\n const display = this._isVisible();\n const isHorizontal = this.isHorizontal();\n if (display) {\n const titleHeight = getTitleHeight(titleOpts, chart.options.font);\n if (isHorizontal) {\n minSize.width = this.maxWidth;\n minSize.height = getTickMarkLength(gridOpts) + titleHeight;\n } else {\n minSize.height = this.maxHeight;\n minSize.width = getTickMarkLength(gridOpts) + titleHeight;\n }\n if (tickOpts.display && this.ticks.length) {\n const {first, last, widest, highest} = this._getLabelSizes();\n const tickPadding = tickOpts.padding * 2;\n const angleRadians = toRadians(this.labelRotation);\n const cos = Math.cos(angleRadians);\n const sin = Math.sin(angleRadians);\n if (isHorizontal) {\n const labelHeight = tickOpts.mirror ? 0 : sin * widest.width + cos * highest.height;\n minSize.height = Math.min(this.maxHeight, minSize.height + labelHeight + tickPadding);\n } else {\n const labelWidth = tickOpts.mirror ? 0 : cos * widest.width + sin * highest.height;\n minSize.width = Math.min(this.maxWidth, minSize.width + labelWidth + tickPadding);\n }\n this._calculatePadding(first, last, sin, cos);\n }\n }\n this._handleMargins();\n if (isHorizontal) {\n this.width = this._length = chart.width - this._margins.left - this._margins.right;\n this.height = minSize.height;\n } else {\n this.width = minSize.width;\n this.height = this._length = chart.height - this._margins.top - this._margins.bottom;\n }\n }\n _calculatePadding(first, last, sin, cos) {\n const {ticks: {align, padding}, position} = this.options;\n const isRotated = this.labelRotation !== 0;\n const labelsBelowTicks = position !== 'top' && this.axis === 'x';\n if (this.isHorizontal()) {\n const offsetLeft = this.getPixelForTick(0) - this.left;\n const offsetRight = this.right - this.getPixelForTick(this.ticks.length - 1);\n let paddingLeft = 0;\n let paddingRight = 0;\n if (isRotated) {\n if (labelsBelowTicks) {\n paddingLeft = cos * first.width;\n paddingRight = sin * last.height;\n } else {\n paddingLeft = sin * first.height;\n paddingRight = cos * last.width;\n }\n } else if (align === 'start') {\n paddingRight = last.width;\n } else if (align === 'end') {\n paddingLeft = first.width;\n } else if (align !== 'inner') {\n paddingLeft = first.width / 2;\n paddingRight = last.width / 2;\n }\n this.paddingLeft = Math.max((paddingLeft - offsetLeft + padding) * this.width / (this.width - offsetLeft), 0);\n this.paddingRight = Math.max((paddingRight - offsetRight + padding) * this.width / (this.width - offsetRight), 0);\n } else {\n let paddingTop = last.height / 2;\n let paddingBottom = first.height / 2;\n if (align === 'start') {\n paddingTop = 0;\n paddingBottom = first.height;\n } else if (align === 'end') {\n paddingTop = last.height;\n paddingBottom = 0;\n }\n this.paddingTop = paddingTop + padding;\n this.paddingBottom = paddingBottom + padding;\n }\n }\n _handleMargins() {\n if (this._margins) {\n this._margins.left = Math.max(this.paddingLeft, this._margins.left);\n this._margins.top = Math.max(this.paddingTop, this._margins.top);\n this._margins.right = Math.max(this.paddingRight, this._margins.right);\n this._margins.bottom = Math.max(this.paddingBottom, this._margins.bottom);\n }\n }\n afterFit() {\n callback(this.options.afterFit, [this]);\n }\n isHorizontal() {\n const {axis, position} = this.options;\n return position === 'top' || position === 'bottom' || axis === 'x';\n }\n isFullSize() {\n return this.options.fullSize;\n }\n _convertTicksToLabels(ticks) {\n this.beforeTickToLabelConversion();\n this.generateTickLabels(ticks);\n let i, ilen;\n for (i = 0, ilen = ticks.length; i < ilen; i++) {\n if (isNullOrUndef(ticks[i].label)) {\n ticks.splice(i, 1);\n ilen--;\n i--;\n }\n }\n this.afterTickToLabelConversion();\n }\n _getLabelSizes() {\n let labelSizes = this._labelSizes;\n if (!labelSizes) {\n const sampleSize = this.options.ticks.sampleSize;\n let ticks = this.ticks;\n if (sampleSize < ticks.length) {\n ticks = sample(ticks, sampleSize);\n }\n this._labelSizes = labelSizes = this._computeLabelSizes(ticks, ticks.length);\n }\n return labelSizes;\n }\n _computeLabelSizes(ticks, length) {\n const {ctx, _longestTextCache: caches} = this;\n const widths = [];\n const heights = [];\n let widestLabelSize = 0;\n let highestLabelSize = 0;\n let i, j, jlen, label, tickFont, fontString, cache, lineHeight, width, height, nestedLabel;\n for (i = 0; i < length; ++i) {\n label = ticks[i].label;\n tickFont = this._resolveTickFontOptions(i);\n ctx.font = fontString = tickFont.string;\n cache = caches[fontString] = caches[fontString] || {data: {}, gc: []};\n lineHeight = tickFont.lineHeight;\n width = height = 0;\n if (!isNullOrUndef(label) && !isArray(label)) {\n width = _measureText(ctx, cache.data, cache.gc, width, label);\n height = lineHeight;\n } else if (isArray(label)) {\n for (j = 0, jlen = label.length; j < jlen; ++j) {\n nestedLabel = label[j];\n if (!isNullOrUndef(nestedLabel) && !isArray(nestedLabel)) {\n width = _measureText(ctx, cache.data, cache.gc, width, nestedLabel);\n height += lineHeight;\n }\n }\n }\n widths.push(width);\n heights.push(height);\n widestLabelSize = Math.max(width, widestLabelSize);\n highestLabelSize = Math.max(height, highestLabelSize);\n }\n garbageCollect(caches, length);\n const widest = widths.indexOf(widestLabelSize);\n const highest = heights.indexOf(highestLabelSize);\n const valueAt = (idx) => ({width: widths[idx] || 0, height: heights[idx] || 0});\n return {\n first: valueAt(0),\n last: valueAt(length - 1),\n widest: valueAt(widest),\n highest: valueAt(highest),\n widths,\n heights,\n };\n }\n getLabelForValue(value) {\n return value;\n }\n getPixelForValue(value, index) {\n return NaN;\n }\n getValueForPixel(pixel) {}\n getPixelForTick(index) {\n const ticks = this.ticks;\n if (index < 0 || index > ticks.length - 1) {\n return null;\n }\n return this.getPixelForValue(ticks[index].value);\n }\n getPixelForDecimal(decimal) {\n if (this._reversePixels) {\n decimal = 1 - decimal;\n }\n const pixel = this._startPixel + decimal * this._length;\n return _int16Range(this._alignToPixels ? _alignPixel(this.chart, pixel, 0) : pixel);\n }\n getDecimalForPixel(pixel) {\n const decimal = (pixel - this._startPixel) / this._length;\n return this._reversePixels ? 1 - decimal : decimal;\n }\n getBasePixel() {\n return this.getPixelForValue(this.getBaseValue());\n }\n getBaseValue() {\n const {min, max} = this;\n return min < 0 && max < 0 ? max :\n min > 0 && max > 0 ? min :\n 0;\n }\n getContext(index) {\n const ticks = this.ticks || [];\n if (index >= 0 && index < ticks.length) {\n const tick = ticks[index];\n return tick.$context ||\n\t\t\t\t(tick.$context = createTickContext(this.getContext(), index, tick));\n }\n return this.$context ||\n\t\t\t(this.$context = createScaleContext(this.chart.getContext(), this));\n }\n _tickSize() {\n const optionTicks = this.options.ticks;\n const rot = toRadians(this.labelRotation);\n const cos = Math.abs(Math.cos(rot));\n const sin = Math.abs(Math.sin(rot));\n const labelSizes = this._getLabelSizes();\n const padding = optionTicks.autoSkipPadding || 0;\n const w = labelSizes ? labelSizes.widest.width + padding : 0;\n const h = labelSizes ? labelSizes.highest.height + padding : 0;\n return this.isHorizontal()\n ? h * cos > w * sin ? w / cos : h / sin\n : h * sin < w * cos ? h / cos : w / sin;\n }\n _isVisible() {\n const display = this.options.display;\n if (display !== 'auto') {\n return !!display;\n }\n return this.getMatchingVisibleMetas().length > 0;\n }\n _computeGridLineItems(chartArea) {\n const axis = this.axis;\n const chart = this.chart;\n const options = this.options;\n const {grid, position} = options;\n const offset = grid.offset;\n const isHorizontal = this.isHorizontal();\n const ticks = this.ticks;\n const ticksLength = ticks.length + (offset ? 1 : 0);\n const tl = getTickMarkLength(grid);\n const items = [];\n const borderOpts = grid.setContext(this.getContext());\n const axisWidth = borderOpts.drawBorder ? borderOpts.borderWidth : 0;\n const axisHalfWidth = axisWidth / 2;\n const alignBorderValue = function(pixel) {\n return _alignPixel(chart, pixel, axisWidth);\n };\n let borderValue, i, lineValue, alignedLineValue;\n let tx1, ty1, tx2, ty2, x1, y1, x2, y2;\n if (position === 'top') {\n borderValue = alignBorderValue(this.bottom);\n ty1 = this.bottom - tl;\n ty2 = borderValue - axisHalfWidth;\n y1 = alignBorderValue(chartArea.top) + axisHalfWidth;\n y2 = chartArea.bottom;\n } else if (position === 'bottom') {\n borderValue = alignBorderValue(this.top);\n y1 = chartArea.top;\n y2 = alignBorderValue(chartArea.bottom) - axisHalfWidth;\n ty1 = borderValue + axisHalfWidth;\n ty2 = this.top + tl;\n } else if (position === 'left') {\n borderValue = alignBorderValue(this.right);\n tx1 = this.right - tl;\n tx2 = borderValue - axisHalfWidth;\n x1 = alignBorderValue(chartArea.left) + axisHalfWidth;\n x2 = chartArea.right;\n } else if (position === 'right') {\n borderValue = alignBorderValue(this.left);\n x1 = chartArea.left;\n x2 = alignBorderValue(chartArea.right) - axisHalfWidth;\n tx1 = borderValue + axisHalfWidth;\n tx2 = this.left + tl;\n } else if (axis === 'x') {\n if (position === 'center') {\n borderValue = alignBorderValue((chartArea.top + chartArea.bottom) / 2 + 0.5);\n } else if (isObject(position)) {\n const positionAxisID = Object.keys(position)[0];\n const value = position[positionAxisID];\n borderValue = alignBorderValue(this.chart.scales[positionAxisID].getPixelForValue(value));\n }\n y1 = chartArea.top;\n y2 = chartArea.bottom;\n ty1 = borderValue + axisHalfWidth;\n ty2 = ty1 + tl;\n } else if (axis === 'y') {\n if (position === 'center') {\n borderValue = alignBorderValue((chartArea.left + chartArea.right) / 2);\n } else if (isObject(position)) {\n const positionAxisID = Object.keys(position)[0];\n const value = position[positionAxisID];\n borderValue = alignBorderValue(this.chart.scales[positionAxisID].getPixelForValue(value));\n }\n tx1 = borderValue - axisHalfWidth;\n tx2 = tx1 - tl;\n x1 = chartArea.left;\n x2 = chartArea.right;\n }\n const limit = valueOrDefault(options.ticks.maxTicksLimit, ticksLength);\n const step = Math.max(1, Math.ceil(ticksLength / limit));\n for (i = 0; i < ticksLength; i += step) {\n const optsAtIndex = grid.setContext(this.getContext(i));\n const lineWidth = optsAtIndex.lineWidth;\n const lineColor = optsAtIndex.color;\n const borderDash = optsAtIndex.borderDash || [];\n const borderDashOffset = optsAtIndex.borderDashOffset;\n const tickWidth = optsAtIndex.tickWidth;\n const tickColor = optsAtIndex.tickColor;\n const tickBorderDash = optsAtIndex.tickBorderDash || [];\n const tickBorderDashOffset = optsAtIndex.tickBorderDashOffset;\n lineValue = getPixelForGridLine(this, i, offset);\n if (lineValue === undefined) {\n continue;\n }\n alignedLineValue = _alignPixel(chart, lineValue, lineWidth);\n if (isHorizontal) {\n tx1 = tx2 = x1 = x2 = alignedLineValue;\n } else {\n ty1 = ty2 = y1 = y2 = alignedLineValue;\n }\n items.push({\n tx1,\n ty1,\n tx2,\n ty2,\n x1,\n y1,\n x2,\n y2,\n width: lineWidth,\n color: lineColor,\n borderDash,\n borderDashOffset,\n tickWidth,\n tickColor,\n tickBorderDash,\n tickBorderDashOffset,\n });\n }\n this._ticksLength = ticksLength;\n this._borderValue = borderValue;\n return items;\n }\n _computeLabelItems(chartArea) {\n const axis = this.axis;\n const options = this.options;\n const {position, ticks: optionTicks} = options;\n const isHorizontal = this.isHorizontal();\n const ticks = this.ticks;\n const {align, crossAlign, padding, mirror} = optionTicks;\n const tl = getTickMarkLength(options.grid);\n const tickAndPadding = tl + padding;\n const hTickAndPadding = mirror ? -padding : tickAndPadding;\n const rotation = -toRadians(this.labelRotation);\n const items = [];\n let i, ilen, tick, label, x, y, textAlign, pixel, font, lineHeight, lineCount, textOffset;\n let textBaseline = 'middle';\n if (position === 'top') {\n y = this.bottom - hTickAndPadding;\n textAlign = this._getXAxisLabelAlignment();\n } else if (position === 'bottom') {\n y = this.top + hTickAndPadding;\n textAlign = this._getXAxisLabelAlignment();\n } else if (position === 'left') {\n const ret = this._getYAxisLabelAlignment(tl);\n textAlign = ret.textAlign;\n x = ret.x;\n } else if (position === 'right') {\n const ret = this._getYAxisLabelAlignment(tl);\n textAlign = ret.textAlign;\n x = ret.x;\n } else if (axis === 'x') {\n if (position === 'center') {\n y = ((chartArea.top + chartArea.bottom) / 2) + tickAndPadding;\n } else if (isObject(position)) {\n const positionAxisID = Object.keys(position)[0];\n const value = position[positionAxisID];\n y = this.chart.scales[positionAxisID].getPixelForValue(value) + tickAndPadding;\n }\n textAlign = this._getXAxisLabelAlignment();\n } else if (axis === 'y') {\n if (position === 'center') {\n x = ((chartArea.left + chartArea.right) / 2) - tickAndPadding;\n } else if (isObject(position)) {\n const positionAxisID = Object.keys(position)[0];\n const value = position[positionAxisID];\n x = this.chart.scales[positionAxisID].getPixelForValue(value);\n }\n textAlign = this._getYAxisLabelAlignment(tl).textAlign;\n }\n if (axis === 'y') {\n if (align === 'start') {\n textBaseline = 'top';\n } else if (align === 'end') {\n textBaseline = 'bottom';\n }\n }\n const labelSizes = this._getLabelSizes();\n for (i = 0, ilen = ticks.length; i < ilen; ++i) {\n tick = ticks[i];\n label = tick.label;\n const optsAtIndex = optionTicks.setContext(this.getContext(i));\n pixel = this.getPixelForTick(i) + optionTicks.labelOffset;\n font = this._resolveTickFontOptions(i);\n lineHeight = font.lineHeight;\n lineCount = isArray(label) ? label.length : 1;\n const halfCount = lineCount / 2;\n const color = optsAtIndex.color;\n const strokeColor = optsAtIndex.textStrokeColor;\n const strokeWidth = optsAtIndex.textStrokeWidth;\n let tickTextAlign = textAlign;\n if (isHorizontal) {\n x = pixel;\n if (textAlign === 'inner') {\n if (i === ilen - 1) {\n tickTextAlign = !this.options.reverse ? 'right' : 'left';\n } else if (i === 0) {\n tickTextAlign = !this.options.reverse ? 'left' : 'right';\n } else {\n tickTextAlign = 'center';\n }\n }\n if (position === 'top') {\n if (crossAlign === 'near' || rotation !== 0) {\n textOffset = -lineCount * lineHeight + lineHeight / 2;\n } else if (crossAlign === 'center') {\n textOffset = -labelSizes.highest.height / 2 - halfCount * lineHeight + lineHeight;\n } else {\n textOffset = -labelSizes.highest.height + lineHeight / 2;\n }\n } else {\n if (crossAlign === 'near' || rotation !== 0) {\n textOffset = lineHeight / 2;\n } else if (crossAlign === 'center') {\n textOffset = labelSizes.highest.height / 2 - halfCount * lineHeight;\n } else {\n textOffset = labelSizes.highest.height - lineCount * lineHeight;\n }\n }\n if (mirror) {\n textOffset *= -1;\n }\n } else {\n y = pixel;\n textOffset = (1 - lineCount) * lineHeight / 2;\n }\n let backdrop;\n if (optsAtIndex.showLabelBackdrop) {\n const labelPadding = toPadding(optsAtIndex.backdropPadding);\n const height = labelSizes.heights[i];\n const width = labelSizes.widths[i];\n let top = y + textOffset - labelPadding.top;\n let left = x - labelPadding.left;\n switch (textBaseline) {\n case 'middle':\n top -= height / 2;\n break;\n case 'bottom':\n top -= height;\n break;\n }\n switch (textAlign) {\n case 'center':\n left -= width / 2;\n break;\n case 'right':\n left -= width;\n break;\n }\n backdrop = {\n left,\n top,\n width: width + labelPadding.width,\n height: height + labelPadding.height,\n color: optsAtIndex.backdropColor,\n };\n }\n items.push({\n rotation,\n label,\n font,\n color,\n strokeColor,\n strokeWidth,\n textOffset,\n textAlign: tickTextAlign,\n textBaseline,\n translation: [x, y],\n backdrop,\n });\n }\n return items;\n }\n _getXAxisLabelAlignment() {\n const {position, ticks} = this.options;\n const rotation = -toRadians(this.labelRotation);\n if (rotation) {\n return position === 'top' ? 'left' : 'right';\n }\n let align = 'center';\n if (ticks.align === 'start') {\n align = 'left';\n } else if (ticks.align === 'end') {\n align = 'right';\n } else if (ticks.align === 'inner') {\n align = 'inner';\n }\n return align;\n }\n _getYAxisLabelAlignment(tl) {\n const {position, ticks: {crossAlign, mirror, padding}} = this.options;\n const labelSizes = this._getLabelSizes();\n const tickAndPadding = tl + padding;\n const widest = labelSizes.widest.width;\n let textAlign;\n let x;\n if (position === 'left') {\n if (mirror) {\n x = this.right + padding;\n if (crossAlign === 'near') {\n textAlign = 'left';\n } else if (crossAlign === 'center') {\n textAlign = 'center';\n x += (widest / 2);\n } else {\n textAlign = 'right';\n x += widest;\n }\n } else {\n x = this.right - tickAndPadding;\n if (crossAlign === 'near') {\n textAlign = 'right';\n } else if (crossAlign === 'center') {\n textAlign = 'center';\n x -= (widest / 2);\n } else {\n textAlign = 'left';\n x = this.left;\n }\n }\n } else if (position === 'right') {\n if (mirror) {\n x = this.left + padding;\n if (crossAlign === 'near') {\n textAlign = 'right';\n } else if (crossAlign === 'center') {\n textAlign = 'center';\n x -= (widest / 2);\n } else {\n textAlign = 'left';\n x -= widest;\n }\n } else {\n x = this.left + tickAndPadding;\n if (crossAlign === 'near') {\n textAlign = 'left';\n } else if (crossAlign === 'center') {\n textAlign = 'center';\n x += widest / 2;\n } else {\n textAlign = 'right';\n x = this.right;\n }\n }\n } else {\n textAlign = 'right';\n }\n return {textAlign, x};\n }\n _computeLabelArea() {\n if (this.options.ticks.mirror) {\n return;\n }\n const chart = this.chart;\n const position = this.options.position;\n if (position === 'left' || position === 'right') {\n return {top: 0, left: this.left, bottom: chart.height, right: this.right};\n } if (position === 'top' || position === 'bottom') {\n return {top: this.top, left: 0, bottom: this.bottom, right: chart.width};\n }\n }\n drawBackground() {\n const {ctx, options: {backgroundColor}, left, top, width, height} = this;\n if (backgroundColor) {\n ctx.save();\n ctx.fillStyle = backgroundColor;\n ctx.fillRect(left, top, width, height);\n ctx.restore();\n }\n }\n getLineWidthForValue(value) {\n const grid = this.options.grid;\n if (!this._isVisible() || !grid.display) {\n return 0;\n }\n const ticks = this.ticks;\n const index = ticks.findIndex(t => t.value === value);\n if (index >= 0) {\n const opts = grid.setContext(this.getContext(index));\n return opts.lineWidth;\n }\n return 0;\n }\n drawGrid(chartArea) {\n const grid = this.options.grid;\n const ctx = this.ctx;\n const items = this._gridLineItems || (this._gridLineItems = this._computeGridLineItems(chartArea));\n let i, ilen;\n const drawLine = (p1, p2, style) => {\n if (!style.width || !style.color) {\n return;\n }\n ctx.save();\n ctx.lineWidth = style.width;\n ctx.strokeStyle = style.color;\n ctx.setLineDash(style.borderDash || []);\n ctx.lineDashOffset = style.borderDashOffset;\n ctx.beginPath();\n ctx.moveTo(p1.x, p1.y);\n ctx.lineTo(p2.x, p2.y);\n ctx.stroke();\n ctx.restore();\n };\n if (grid.display) {\n for (i = 0, ilen = items.length; i < ilen; ++i) {\n const item = items[i];\n if (grid.drawOnChartArea) {\n drawLine(\n {x: item.x1, y: item.y1},\n {x: item.x2, y: item.y2},\n item\n );\n }\n if (grid.drawTicks) {\n drawLine(\n {x: item.tx1, y: item.ty1},\n {x: item.tx2, y: item.ty2},\n {\n color: item.tickColor,\n width: item.tickWidth,\n borderDash: item.tickBorderDash,\n borderDashOffset: item.tickBorderDashOffset\n }\n );\n }\n }\n }\n }\n drawBorder() {\n const {chart, ctx, options: {grid}} = this;\n const borderOpts = grid.setContext(this.getContext());\n const axisWidth = grid.drawBorder ? borderOpts.borderWidth : 0;\n if (!axisWidth) {\n return;\n }\n const lastLineWidth = grid.setContext(this.getContext(0)).lineWidth;\n const borderValue = this._borderValue;\n let x1, x2, y1, y2;\n if (this.isHorizontal()) {\n x1 = _alignPixel(chart, this.left, axisWidth) - axisWidth / 2;\n x2 = _alignPixel(chart, this.right, lastLineWidth) + lastLineWidth / 2;\n y1 = y2 = borderValue;\n } else {\n y1 = _alignPixel(chart, this.top, axisWidth) - axisWidth / 2;\n y2 = _alignPixel(chart, this.bottom, lastLineWidth) + lastLineWidth / 2;\n x1 = x2 = borderValue;\n }\n ctx.save();\n ctx.lineWidth = borderOpts.borderWidth;\n ctx.strokeStyle = borderOpts.borderColor;\n ctx.beginPath();\n ctx.moveTo(x1, y1);\n ctx.lineTo(x2, y2);\n ctx.stroke();\n ctx.restore();\n }\n drawLabels(chartArea) {\n const optionTicks = this.options.ticks;\n if (!optionTicks.display) {\n return;\n }\n const ctx = this.ctx;\n const area = this._computeLabelArea();\n if (area) {\n clipArea(ctx, area);\n }\n const items = this._labelItems || (this._labelItems = this._computeLabelItems(chartArea));\n let i, ilen;\n for (i = 0, ilen = items.length; i < ilen; ++i) {\n const item = items[i];\n const tickFont = item.font;\n const label = item.label;\n if (item.backdrop) {\n ctx.fillStyle = item.backdrop.color;\n ctx.fillRect(item.backdrop.left, item.backdrop.top, item.backdrop.width, item.backdrop.height);\n }\n let y = item.textOffset;\n renderText(ctx, label, 0, y, tickFont, item);\n }\n if (area) {\n unclipArea(ctx);\n }\n }\n drawTitle() {\n const {ctx, options: {position, title, reverse}} = this;\n if (!title.display) {\n return;\n }\n const font = toFont(title.font);\n const padding = toPadding(title.padding);\n const align = title.align;\n let offset = font.lineHeight / 2;\n if (position === 'bottom' || position === 'center' || isObject(position)) {\n offset += padding.bottom;\n if (isArray(title.text)) {\n offset += font.lineHeight * (title.text.length - 1);\n }\n } else {\n offset += padding.top;\n }\n const {titleX, titleY, maxWidth, rotation} = titleArgs(this, offset, position, align);\n renderText(ctx, title.text, 0, 0, font, {\n color: title.color,\n maxWidth,\n rotation,\n textAlign: titleAlign(align, position, reverse),\n textBaseline: 'middle',\n translation: [titleX, titleY],\n });\n }\n draw(chartArea) {\n if (!this._isVisible()) {\n return;\n }\n this.drawBackground();\n this.drawGrid(chartArea);\n this.drawBorder();\n this.drawTitle();\n this.drawLabels(chartArea);\n }\n _layers() {\n const opts = this.options;\n const tz = opts.ticks && opts.ticks.z || 0;\n const gz = valueOrDefault(opts.grid && opts.grid.z, -1);\n if (!this._isVisible() || this.draw !== Scale.prototype.draw) {\n return [{\n z: tz,\n draw: (chartArea) => {\n this.draw(chartArea);\n }\n }];\n }\n return [{\n z: gz,\n draw: (chartArea) => {\n this.drawBackground();\n this.drawGrid(chartArea);\n this.drawTitle();\n }\n }, {\n z: gz + 1,\n draw: () => {\n this.drawBorder();\n }\n }, {\n z: tz,\n draw: (chartArea) => {\n this.drawLabels(chartArea);\n }\n }];\n }\n getMatchingVisibleMetas(type) {\n const metas = this.chart.getSortedVisibleDatasetMetas();\n const axisID = this.axis + 'AxisID';\n const result = [];\n let i, ilen;\n for (i = 0, ilen = metas.length; i < ilen; ++i) {\n const meta = metas[i];\n if (meta[axisID] === this.id && (!type || meta.type === type)) {\n result.push(meta);\n }\n }\n return result;\n }\n _resolveTickFontOptions(index) {\n const opts = this.options.ticks.setContext(this.getContext(index));\n return toFont(opts.font);\n }\n _maxDigits() {\n const fontSize = this._resolveTickFontOptions(0).lineHeight;\n return (this.isHorizontal() ? this.width : this.height) / fontSize;\n }\n}\n\nclass TypedRegistry {\n constructor(type, scope, override) {\n this.type = type;\n this.scope = scope;\n this.override = override;\n this.items = Object.create(null);\n }\n isForType(type) {\n return Object.prototype.isPrototypeOf.call(this.type.prototype, type.prototype);\n }\n register(item) {\n const proto = Object.getPrototypeOf(item);\n let parentScope;\n if (isIChartComponent(proto)) {\n parentScope = this.register(proto);\n }\n const items = this.items;\n const id = item.id;\n const scope = this.scope + '.' + id;\n if (!id) {\n throw new Error('class does not have id: ' + item);\n }\n if (id in items) {\n return scope;\n }\n items[id] = item;\n registerDefaults(item, scope, parentScope);\n if (this.override) {\n defaults.override(item.id, item.overrides);\n }\n return scope;\n }\n get(id) {\n return this.items[id];\n }\n unregister(item) {\n const items = this.items;\n const id = item.id;\n const scope = this.scope;\n if (id in items) {\n delete items[id];\n }\n if (scope && id in defaults[scope]) {\n delete defaults[scope][id];\n if (this.override) {\n delete overrides[id];\n }\n }\n }\n}\nfunction registerDefaults(item, scope, parentScope) {\n const itemDefaults = merge(Object.create(null), [\n parentScope ? defaults.get(parentScope) : {},\n defaults.get(scope),\n item.defaults\n ]);\n defaults.set(scope, itemDefaults);\n if (item.defaultRoutes) {\n routeDefaults(scope, item.defaultRoutes);\n }\n if (item.descriptors) {\n defaults.describe(scope, item.descriptors);\n }\n}\nfunction routeDefaults(scope, routes) {\n Object.keys(routes).forEach(property => {\n const propertyParts = property.split('.');\n const sourceName = propertyParts.pop();\n const sourceScope = [scope].concat(propertyParts).join('.');\n const parts = routes[property].split('.');\n const targetName = parts.pop();\n const targetScope = parts.join('.');\n defaults.route(sourceScope, sourceName, targetScope, targetName);\n });\n}\nfunction isIChartComponent(proto) {\n return 'id' in proto && 'defaults' in proto;\n}\n\nclass Registry {\n constructor() {\n this.controllers = new TypedRegistry(DatasetController, 'datasets', true);\n this.elements = new TypedRegistry(Element, 'elements');\n this.plugins = new TypedRegistry(Object, 'plugins');\n this.scales = new TypedRegistry(Scale, 'scales');\n this._typedRegistries = [this.controllers, this.scales, this.elements];\n }\n add(...args) {\n this._each('register', args);\n }\n remove(...args) {\n this._each('unregister', args);\n }\n addControllers(...args) {\n this._each('register', args, this.controllers);\n }\n addElements(...args) {\n this._each('register', args, this.elements);\n }\n addPlugins(...args) {\n this._each('register', args, this.plugins);\n }\n addScales(...args) {\n this._each('register', args, this.scales);\n }\n getController(id) {\n return this._get(id, this.controllers, 'controller');\n }\n getElement(id) {\n return this._get(id, this.elements, 'element');\n }\n getPlugin(id) {\n return this._get(id, this.plugins, 'plugin');\n }\n getScale(id) {\n return this._get(id, this.scales, 'scale');\n }\n removeControllers(...args) {\n this._each('unregister', args, this.controllers);\n }\n removeElements(...args) {\n this._each('unregister', args, this.elements);\n }\n removePlugins(...args) {\n this._each('unregister', args, this.plugins);\n }\n removeScales(...args) {\n this._each('unregister', args, this.scales);\n }\n _each(method, args, typedRegistry) {\n [...args].forEach(arg => {\n const reg = typedRegistry || this._getRegistryForType(arg);\n if (typedRegistry || reg.isForType(arg) || (reg === this.plugins && arg.id)) {\n this._exec(method, reg, arg);\n } else {\n each(arg, item => {\n const itemReg = typedRegistry || this._getRegistryForType(item);\n this._exec(method, itemReg, item);\n });\n }\n });\n }\n _exec(method, registry, component) {\n const camelMethod = _capitalize(method);\n callback(component['before' + camelMethod], [], component);\n registry[method](component);\n callback(component['after' + camelMethod], [], component);\n }\n _getRegistryForType(type) {\n for (let i = 0; i < this._typedRegistries.length; i++) {\n const reg = this._typedRegistries[i];\n if (reg.isForType(type)) {\n return reg;\n }\n }\n return this.plugins;\n }\n _get(id, typedRegistry, type) {\n const item = typedRegistry.get(id);\n if (item === undefined) {\n throw new Error('\"' + id + '\" is not a registered ' + type + '.');\n }\n return item;\n }\n}\nvar registry = new Registry();\n\nclass ScatterController extends DatasetController {\n update(mode) {\n const meta = this._cachedMeta;\n const {data: points = []} = meta;\n const animationsDisabled = this.chart._animationsDisabled;\n let {start, count} = _getStartAndCountOfVisiblePoints(meta, points, animationsDisabled);\n this._drawStart = start;\n this._drawCount = count;\n if (_scaleRangesChanged(meta)) {\n start = 0;\n count = points.length;\n }\n if (this.options.showLine) {\n const {dataset: line, _dataset} = meta;\n line._chart = this.chart;\n line._datasetIndex = this.index;\n line._decimated = !!_dataset._decimated;\n line.points = points;\n const options = this.resolveDatasetElementOptions(mode);\n options.segment = this.options.segment;\n this.updateElement(line, undefined, {\n animated: !animationsDisabled,\n options\n }, mode);\n }\n this.updateElements(points, start, count, mode);\n }\n addElements() {\n const {showLine} = this.options;\n if (!this.datasetElementType && showLine) {\n this.datasetElementType = registry.getElement('line');\n }\n super.addElements();\n }\n updateElements(points, start, count, mode) {\n const reset = mode === 'reset';\n const {iScale, vScale, _stacked, _dataset} = this._cachedMeta;\n const firstOpts = this.resolveDataElementOptions(start, mode);\n const sharedOptions = this.getSharedOptions(firstOpts);\n const includeOptions = this.includeOptions(mode, sharedOptions);\n const iAxis = iScale.axis;\n const vAxis = vScale.axis;\n const {spanGaps, segment} = this.options;\n const maxGapLength = isNumber(spanGaps) ? spanGaps : Number.POSITIVE_INFINITY;\n const directUpdate = this.chart._animationsDisabled || reset || mode === 'none';\n let prevParsed = start > 0 && this.getParsed(start - 1);\n for (let i = start; i < start + count; ++i) {\n const point = points[i];\n const parsed = this.getParsed(i);\n const properties = directUpdate ? point : {};\n const nullData = isNullOrUndef(parsed[vAxis]);\n const iPixel = properties[iAxis] = iScale.getPixelForValue(parsed[iAxis], i);\n const vPixel = properties[vAxis] = reset || nullData ? vScale.getBasePixel() : vScale.getPixelForValue(_stacked ? this.applyStack(vScale, parsed, _stacked) : parsed[vAxis], i);\n properties.skip = isNaN(iPixel) || isNaN(vPixel) || nullData;\n properties.stop = i > 0 && (Math.abs(parsed[iAxis] - prevParsed[iAxis])) > maxGapLength;\n if (segment) {\n properties.parsed = parsed;\n properties.raw = _dataset.data[i];\n }\n if (includeOptions) {\n properties.options = sharedOptions || this.resolveDataElementOptions(i, point.active ? 'active' : mode);\n }\n if (!directUpdate) {\n this.updateElement(point, i, properties, mode);\n }\n prevParsed = parsed;\n }\n this.updateSharedOptions(sharedOptions, mode, firstOpts);\n }\n getMaxOverflow() {\n const meta = this._cachedMeta;\n const data = meta.data || [];\n if (!this.options.showLine) {\n let max = 0;\n for (let i = data.length - 1; i >= 0; --i) {\n max = Math.max(max, data[i].size(this.resolveDataElementOptions(i)) / 2);\n }\n return max > 0 && max;\n }\n const dataset = meta.dataset;\n const border = dataset.options && dataset.options.borderWidth || 0;\n if (!data.length) {\n return border;\n }\n const firstPoint = data[0].size(this.resolveDataElementOptions(0));\n const lastPoint = data[data.length - 1].size(this.resolveDataElementOptions(data.length - 1));\n return Math.max(border, firstPoint, lastPoint) / 2;\n }\n}\nScatterController.id = 'scatter';\nScatterController.defaults = {\n datasetElementType: false,\n dataElementType: 'point',\n showLine: false,\n fill: false\n};\nScatterController.overrides = {\n interaction: {\n mode: 'point'\n },\n plugins: {\n tooltip: {\n callbacks: {\n title() {\n return '';\n },\n label(item) {\n return '(' + item.label + ', ' + item.formattedValue + ')';\n }\n }\n }\n },\n scales: {\n x: {\n type: 'linear'\n },\n y: {\n type: 'linear'\n }\n }\n};\n\nvar controllers = /*#__PURE__*/Object.freeze({\n__proto__: null,\nBarController: BarController,\nBubbleController: BubbleController,\nDoughnutController: DoughnutController,\nLineController: LineController,\nPolarAreaController: PolarAreaController,\nPieController: PieController,\nRadarController: RadarController,\nScatterController: ScatterController\n});\n\nfunction abstract() {\n throw new Error('This method is not implemented: Check that a complete date adapter is provided.');\n}\nclass DateAdapter {\n constructor(options) {\n this.options = options || {};\n }\n init(chartOptions) {}\n formats() {\n return abstract();\n }\n parse(value, format) {\n return abstract();\n }\n format(timestamp, format) {\n return abstract();\n }\n add(timestamp, amount, unit) {\n return abstract();\n }\n diff(a, b, unit) {\n return abstract();\n }\n startOf(timestamp, unit, weekday) {\n return abstract();\n }\n endOf(timestamp, unit) {\n return abstract();\n }\n}\nDateAdapter.override = function(members) {\n Object.assign(DateAdapter.prototype, members);\n};\nvar adapters = {\n _date: DateAdapter\n};\n\nfunction binarySearch(metaset, axis, value, intersect) {\n const {controller, data, _sorted} = metaset;\n const iScale = controller._cachedMeta.iScale;\n if (iScale && axis === iScale.axis && axis !== 'r' && _sorted && data.length) {\n const lookupMethod = iScale._reversePixels ? _rlookupByKey : _lookupByKey;\n if (!intersect) {\n return lookupMethod(data, axis, value);\n } else if (controller._sharedOptions) {\n const el = data[0];\n const range = typeof el.getRange === 'function' && el.getRange(axis);\n if (range) {\n const start = lookupMethod(data, axis, value - range);\n const end = lookupMethod(data, axis, value + range);\n return {lo: start.lo, hi: end.hi};\n }\n }\n }\n return {lo: 0, hi: data.length - 1};\n}\nfunction evaluateInteractionItems(chart, axis, position, handler, intersect) {\n const metasets = chart.getSortedVisibleDatasetMetas();\n const value = position[axis];\n for (let i = 0, ilen = metasets.length; i < ilen; ++i) {\n const {index, data} = metasets[i];\n const {lo, hi} = binarySearch(metasets[i], axis, value, intersect);\n for (let j = lo; j <= hi; ++j) {\n const element = data[j];\n if (!element.skip) {\n handler(element, index, j);\n }\n }\n }\n}\nfunction getDistanceMetricForAxis(axis) {\n const useX = axis.indexOf('x') !== -1;\n const useY = axis.indexOf('y') !== -1;\n return function(pt1, pt2) {\n const deltaX = useX ? Math.abs(pt1.x - pt2.x) : 0;\n const deltaY = useY ? Math.abs(pt1.y - pt2.y) : 0;\n return Math.sqrt(Math.pow(deltaX, 2) + Math.pow(deltaY, 2));\n };\n}\nfunction getIntersectItems(chart, position, axis, useFinalPosition, includeInvisible) {\n const items = [];\n if (!includeInvisible && !chart.isPointInArea(position)) {\n return items;\n }\n const evaluationFunc = function(element, datasetIndex, index) {\n if (!includeInvisible && !_isPointInArea(element, chart.chartArea, 0)) {\n return;\n }\n if (element.inRange(position.x, position.y, useFinalPosition)) {\n items.push({element, datasetIndex, index});\n }\n };\n evaluateInteractionItems(chart, axis, position, evaluationFunc, true);\n return items;\n}\nfunction getNearestRadialItems(chart, position, axis, useFinalPosition) {\n let items = [];\n function evaluationFunc(element, datasetIndex, index) {\n const {startAngle, endAngle} = element.getProps(['startAngle', 'endAngle'], useFinalPosition);\n const {angle} = getAngleFromPoint(element, {x: position.x, y: position.y});\n if (_angleBetween(angle, startAngle, endAngle)) {\n items.push({element, datasetIndex, index});\n }\n }\n evaluateInteractionItems(chart, axis, position, evaluationFunc);\n return items;\n}\nfunction getNearestCartesianItems(chart, position, axis, intersect, useFinalPosition, includeInvisible) {\n let items = [];\n const distanceMetric = getDistanceMetricForAxis(axis);\n let minDistance = Number.POSITIVE_INFINITY;\n function evaluationFunc(element, datasetIndex, index) {\n const inRange = element.inRange(position.x, position.y, useFinalPosition);\n if (intersect && !inRange) {\n return;\n }\n const center = element.getCenterPoint(useFinalPosition);\n const pointInArea = !!includeInvisible || chart.isPointInArea(center);\n if (!pointInArea && !inRange) {\n return;\n }\n const distance = distanceMetric(position, center);\n if (distance < minDistance) {\n items = [{element, datasetIndex, index}];\n minDistance = distance;\n } else if (distance === minDistance) {\n items.push({element, datasetIndex, index});\n }\n }\n evaluateInteractionItems(chart, axis, position, evaluationFunc);\n return items;\n}\nfunction getNearestItems(chart, position, axis, intersect, useFinalPosition, includeInvisible) {\n if (!includeInvisible && !chart.isPointInArea(position)) {\n return [];\n }\n return axis === 'r' && !intersect\n ? getNearestRadialItems(chart, position, axis, useFinalPosition)\n : getNearestCartesianItems(chart, position, axis, intersect, useFinalPosition, includeInvisible);\n}\nfunction getAxisItems(chart, position, axis, intersect, useFinalPosition) {\n const items = [];\n const rangeMethod = axis === 'x' ? 'inXRange' : 'inYRange';\n let intersectsItem = false;\n evaluateInteractionItems(chart, axis, position, (element, datasetIndex, index) => {\n if (element[rangeMethod](position[axis], useFinalPosition)) {\n items.push({element, datasetIndex, index});\n intersectsItem = intersectsItem || element.inRange(position.x, position.y, useFinalPosition);\n }\n });\n if (intersect && !intersectsItem) {\n return [];\n }\n return items;\n}\nvar Interaction = {\n evaluateInteractionItems,\n modes: {\n index(chart, e, options, useFinalPosition) {\n const position = getRelativePosition(e, chart);\n const axis = options.axis || 'x';\n const includeInvisible = options.includeInvisible || false;\n const items = options.intersect\n ? getIntersectItems(chart, position, axis, useFinalPosition, includeInvisible)\n : getNearestItems(chart, position, axis, false, useFinalPosition, includeInvisible);\n const elements = [];\n if (!items.length) {\n return [];\n }\n chart.getSortedVisibleDatasetMetas().forEach((meta) => {\n const index = items[0].index;\n const element = meta.data[index];\n if (element && !element.skip) {\n elements.push({element, datasetIndex: meta.index, index});\n }\n });\n return elements;\n },\n dataset(chart, e, options, useFinalPosition) {\n const position = getRelativePosition(e, chart);\n const axis = options.axis || 'xy';\n const includeInvisible = options.includeInvisible || false;\n let items = options.intersect\n ? getIntersectItems(chart, position, axis, useFinalPosition, includeInvisible) :\n getNearestItems(chart, position, axis, false, useFinalPosition, includeInvisible);\n if (items.length > 0) {\n const datasetIndex = items[0].datasetIndex;\n const data = chart.getDatasetMeta(datasetIndex).data;\n items = [];\n for (let i = 0; i < data.length; ++i) {\n items.push({element: data[i], datasetIndex, index: i});\n }\n }\n return items;\n },\n point(chart, e, options, useFinalPosition) {\n const position = getRelativePosition(e, chart);\n const axis = options.axis || 'xy';\n const includeInvisible = options.includeInvisible || false;\n return getIntersectItems(chart, position, axis, useFinalPosition, includeInvisible);\n },\n nearest(chart, e, options, useFinalPosition) {\n const position = getRelativePosition(e, chart);\n const axis = options.axis || 'xy';\n const includeInvisible = options.includeInvisible || false;\n return getNearestItems(chart, position, axis, options.intersect, useFinalPosition, includeInvisible);\n },\n x(chart, e, options, useFinalPosition) {\n const position = getRelativePosition(e, chart);\n return getAxisItems(chart, position, 'x', options.intersect, useFinalPosition);\n },\n y(chart, e, options, useFinalPosition) {\n const position = getRelativePosition(e, chart);\n return getAxisItems(chart, position, 'y', options.intersect, useFinalPosition);\n }\n }\n};\n\nconst STATIC_POSITIONS = ['left', 'top', 'right', 'bottom'];\nfunction filterByPosition(array, position) {\n return array.filter(v => v.pos === position);\n}\nfunction filterDynamicPositionByAxis(array, axis) {\n return array.filter(v => STATIC_POSITIONS.indexOf(v.pos) === -1 && v.box.axis === axis);\n}\nfunction sortByWeight(array, reverse) {\n return array.sort((a, b) => {\n const v0 = reverse ? b : a;\n const v1 = reverse ? a : b;\n return v0.weight === v1.weight ?\n v0.index - v1.index :\n v0.weight - v1.weight;\n });\n}\nfunction wrapBoxes(boxes) {\n const layoutBoxes = [];\n let i, ilen, box, pos, stack, stackWeight;\n for (i = 0, ilen = (boxes || []).length; i < ilen; ++i) {\n box = boxes[i];\n ({position: pos, options: {stack, stackWeight = 1}} = box);\n layoutBoxes.push({\n index: i,\n box,\n pos,\n horizontal: box.isHorizontal(),\n weight: box.weight,\n stack: stack && (pos + stack),\n stackWeight\n });\n }\n return layoutBoxes;\n}\nfunction buildStacks(layouts) {\n const stacks = {};\n for (const wrap of layouts) {\n const {stack, pos, stackWeight} = wrap;\n if (!stack || !STATIC_POSITIONS.includes(pos)) {\n continue;\n }\n const _stack = stacks[stack] || (stacks[stack] = {count: 0, placed: 0, weight: 0, size: 0});\n _stack.count++;\n _stack.weight += stackWeight;\n }\n return stacks;\n}\nfunction setLayoutDims(layouts, params) {\n const stacks = buildStacks(layouts);\n const {vBoxMaxWidth, hBoxMaxHeight} = params;\n let i, ilen, layout;\n for (i = 0, ilen = layouts.length; i < ilen; ++i) {\n layout = layouts[i];\n const {fullSize} = layout.box;\n const stack = stacks[layout.stack];\n const factor = stack && layout.stackWeight / stack.weight;\n if (layout.horizontal) {\n layout.width = factor ? factor * vBoxMaxWidth : fullSize && params.availableWidth;\n layout.height = hBoxMaxHeight;\n } else {\n layout.width = vBoxMaxWidth;\n layout.height = factor ? factor * hBoxMaxHeight : fullSize && params.availableHeight;\n }\n }\n return stacks;\n}\nfunction buildLayoutBoxes(boxes) {\n const layoutBoxes = wrapBoxes(boxes);\n const fullSize = sortByWeight(layoutBoxes.filter(wrap => wrap.box.fullSize), true);\n const left = sortByWeight(filterByPosition(layoutBoxes, 'left'), true);\n const right = sortByWeight(filterByPosition(layoutBoxes, 'right'));\n const top = sortByWeight(filterByPosition(layoutBoxes, 'top'), true);\n const bottom = sortByWeight(filterByPosition(layoutBoxes, 'bottom'));\n const centerHorizontal = filterDynamicPositionByAxis(layoutBoxes, 'x');\n const centerVertical = filterDynamicPositionByAxis(layoutBoxes, 'y');\n return {\n fullSize,\n leftAndTop: left.concat(top),\n rightAndBottom: right.concat(centerVertical).concat(bottom).concat(centerHorizontal),\n chartArea: filterByPosition(layoutBoxes, 'chartArea'),\n vertical: left.concat(right).concat(centerVertical),\n horizontal: top.concat(bottom).concat(centerHorizontal)\n };\n}\nfunction getCombinedMax(maxPadding, chartArea, a, b) {\n return Math.max(maxPadding[a], chartArea[a]) + Math.max(maxPadding[b], chartArea[b]);\n}\nfunction updateMaxPadding(maxPadding, boxPadding) {\n maxPadding.top = Math.max(maxPadding.top, boxPadding.top);\n maxPadding.left = Math.max(maxPadding.left, boxPadding.left);\n maxPadding.bottom = Math.max(maxPadding.bottom, boxPadding.bottom);\n maxPadding.right = Math.max(maxPadding.right, boxPadding.right);\n}\nfunction updateDims(chartArea, params, layout, stacks) {\n const {pos, box} = layout;\n const maxPadding = chartArea.maxPadding;\n if (!isObject(pos)) {\n if (layout.size) {\n chartArea[pos] -= layout.size;\n }\n const stack = stacks[layout.stack] || {size: 0, count: 1};\n stack.size = Math.max(stack.size, layout.horizontal ? box.height : box.width);\n layout.size = stack.size / stack.count;\n chartArea[pos] += layout.size;\n }\n if (box.getPadding) {\n updateMaxPadding(maxPadding, box.getPadding());\n }\n const newWidth = Math.max(0, params.outerWidth - getCombinedMax(maxPadding, chartArea, 'left', 'right'));\n const newHeight = Math.max(0, params.outerHeight - getCombinedMax(maxPadding, chartArea, 'top', 'bottom'));\n const widthChanged = newWidth !== chartArea.w;\n const heightChanged = newHeight !== chartArea.h;\n chartArea.w = newWidth;\n chartArea.h = newHeight;\n return layout.horizontal\n ? {same: widthChanged, other: heightChanged}\n : {same: heightChanged, other: widthChanged};\n}\nfunction handleMaxPadding(chartArea) {\n const maxPadding = chartArea.maxPadding;\n function updatePos(pos) {\n const change = Math.max(maxPadding[pos] - chartArea[pos], 0);\n chartArea[pos] += change;\n return change;\n }\n chartArea.y += updatePos('top');\n chartArea.x += updatePos('left');\n updatePos('right');\n updatePos('bottom');\n}\nfunction getMargins(horizontal, chartArea) {\n const maxPadding = chartArea.maxPadding;\n function marginForPositions(positions) {\n const margin = {left: 0, top: 0, right: 0, bottom: 0};\n positions.forEach((pos) => {\n margin[pos] = Math.max(chartArea[pos], maxPadding[pos]);\n });\n return margin;\n }\n return horizontal\n ? marginForPositions(['left', 'right'])\n : marginForPositions(['top', 'bottom']);\n}\nfunction fitBoxes(boxes, chartArea, params, stacks) {\n const refitBoxes = [];\n let i, ilen, layout, box, refit, changed;\n for (i = 0, ilen = boxes.length, refit = 0; i < ilen; ++i) {\n layout = boxes[i];\n box = layout.box;\n box.update(\n layout.width || chartArea.w,\n layout.height || chartArea.h,\n getMargins(layout.horizontal, chartArea)\n );\n const {same, other} = updateDims(chartArea, params, layout, stacks);\n refit |= same && refitBoxes.length;\n changed = changed || other;\n if (!box.fullSize) {\n refitBoxes.push(layout);\n }\n }\n return refit && fitBoxes(refitBoxes, chartArea, params, stacks) || changed;\n}\nfunction setBoxDims(box, left, top, width, height) {\n box.top = top;\n box.left = left;\n box.right = left + width;\n box.bottom = top + height;\n box.width = width;\n box.height = height;\n}\nfunction placeBoxes(boxes, chartArea, params, stacks) {\n const userPadding = params.padding;\n let {x, y} = chartArea;\n for (const layout of boxes) {\n const box = layout.box;\n const stack = stacks[layout.stack] || {count: 1, placed: 0, weight: 1};\n const weight = (layout.stackWeight / stack.weight) || 1;\n if (layout.horizontal) {\n const width = chartArea.w * weight;\n const height = stack.size || box.height;\n if (defined(stack.start)) {\n y = stack.start;\n }\n if (box.fullSize) {\n setBoxDims(box, userPadding.left, y, params.outerWidth - userPadding.right - userPadding.left, height);\n } else {\n setBoxDims(box, chartArea.left + stack.placed, y, width, height);\n }\n stack.start = y;\n stack.placed += width;\n y = box.bottom;\n } else {\n const height = chartArea.h * weight;\n const width = stack.size || box.width;\n if (defined(stack.start)) {\n x = stack.start;\n }\n if (box.fullSize) {\n setBoxDims(box, x, userPadding.top, width, params.outerHeight - userPadding.bottom - userPadding.top);\n } else {\n setBoxDims(box, x, chartArea.top + stack.placed, width, height);\n }\n stack.start = x;\n stack.placed += height;\n x = box.right;\n }\n }\n chartArea.x = x;\n chartArea.y = y;\n}\ndefaults.set('layout', {\n autoPadding: true,\n padding: {\n top: 0,\n right: 0,\n bottom: 0,\n left: 0\n }\n});\nvar layouts = {\n addBox(chart, item) {\n if (!chart.boxes) {\n chart.boxes = [];\n }\n item.fullSize = item.fullSize || false;\n item.position = item.position || 'top';\n item.weight = item.weight || 0;\n item._layers = item._layers || function() {\n return [{\n z: 0,\n draw(chartArea) {\n item.draw(chartArea);\n }\n }];\n };\n chart.boxes.push(item);\n },\n removeBox(chart, layoutItem) {\n const index = chart.boxes ? chart.boxes.indexOf(layoutItem) : -1;\n if (index !== -1) {\n chart.boxes.splice(index, 1);\n }\n },\n configure(chart, item, options) {\n item.fullSize = options.fullSize;\n item.position = options.position;\n item.weight = options.weight;\n },\n update(chart, width, height, minPadding) {\n if (!chart) {\n return;\n }\n const padding = toPadding(chart.options.layout.padding);\n const availableWidth = Math.max(width - padding.width, 0);\n const availableHeight = Math.max(height - padding.height, 0);\n const boxes = buildLayoutBoxes(chart.boxes);\n const verticalBoxes = boxes.vertical;\n const horizontalBoxes = boxes.horizontal;\n each(chart.boxes, box => {\n if (typeof box.beforeLayout === 'function') {\n box.beforeLayout();\n }\n });\n const visibleVerticalBoxCount = verticalBoxes.reduce((total, wrap) =>\n wrap.box.options && wrap.box.options.display === false ? total : total + 1, 0) || 1;\n const params = Object.freeze({\n outerWidth: width,\n outerHeight: height,\n padding,\n availableWidth,\n availableHeight,\n vBoxMaxWidth: availableWidth / 2 / visibleVerticalBoxCount,\n hBoxMaxHeight: availableHeight / 2\n });\n const maxPadding = Object.assign({}, padding);\n updateMaxPadding(maxPadding, toPadding(minPadding));\n const chartArea = Object.assign({\n maxPadding,\n w: availableWidth,\n h: availableHeight,\n x: padding.left,\n y: padding.top\n }, padding);\n const stacks = setLayoutDims(verticalBoxes.concat(horizontalBoxes), params);\n fitBoxes(boxes.fullSize, chartArea, params, stacks);\n fitBoxes(verticalBoxes, chartArea, params, stacks);\n if (fitBoxes(horizontalBoxes, chartArea, params, stacks)) {\n fitBoxes(verticalBoxes, chartArea, params, stacks);\n }\n handleMaxPadding(chartArea);\n placeBoxes(boxes.leftAndTop, chartArea, params, stacks);\n chartArea.x += chartArea.w;\n chartArea.y += chartArea.h;\n placeBoxes(boxes.rightAndBottom, chartArea, params, stacks);\n chart.chartArea = {\n left: chartArea.left,\n top: chartArea.top,\n right: chartArea.left + chartArea.w,\n bottom: chartArea.top + chartArea.h,\n height: chartArea.h,\n width: chartArea.w,\n };\n each(boxes.chartArea, (layout) => {\n const box = layout.box;\n Object.assign(box, chart.chartArea);\n box.update(chartArea.w, chartArea.h, {left: 0, top: 0, right: 0, bottom: 0});\n });\n }\n};\n\nclass BasePlatform {\n acquireContext(canvas, aspectRatio) {}\n releaseContext(context) {\n return false;\n }\n addEventListener(chart, type, listener) {}\n removeEventListener(chart, type, listener) {}\n getDevicePixelRatio() {\n return 1;\n }\n getMaximumSize(element, width, height, aspectRatio) {\n width = Math.max(0, width || element.width);\n height = height || element.height;\n return {\n width,\n height: Math.max(0, aspectRatio ? Math.floor(width / aspectRatio) : height)\n };\n }\n isAttached(canvas) {\n return true;\n }\n updateConfig(config) {\n }\n}\n\nclass BasicPlatform extends BasePlatform {\n acquireContext(item) {\n return item && item.getContext && item.getContext('2d') || null;\n }\n updateConfig(config) {\n config.options.animation = false;\n }\n}\n\nconst EXPANDO_KEY = '$chartjs';\nconst EVENT_TYPES = {\n touchstart: 'mousedown',\n touchmove: 'mousemove',\n touchend: 'mouseup',\n pointerenter: 'mouseenter',\n pointerdown: 'mousedown',\n pointermove: 'mousemove',\n pointerup: 'mouseup',\n pointerleave: 'mouseout',\n pointerout: 'mouseout'\n};\nconst isNullOrEmpty = value => value === null || value === '';\nfunction initCanvas(canvas, aspectRatio) {\n const style = canvas.style;\n const renderHeight = canvas.getAttribute('height');\n const renderWidth = canvas.getAttribute('width');\n canvas[EXPANDO_KEY] = {\n initial: {\n height: renderHeight,\n width: renderWidth,\n style: {\n display: style.display,\n height: style.height,\n width: style.width\n }\n }\n };\n style.display = style.display || 'block';\n style.boxSizing = style.boxSizing || 'border-box';\n if (isNullOrEmpty(renderWidth)) {\n const displayWidth = readUsedSize(canvas, 'width');\n if (displayWidth !== undefined) {\n canvas.width = displayWidth;\n }\n }\n if (isNullOrEmpty(renderHeight)) {\n if (canvas.style.height === '') {\n canvas.height = canvas.width / (aspectRatio || 2);\n } else {\n const displayHeight = readUsedSize(canvas, 'height');\n if (displayHeight !== undefined) {\n canvas.height = displayHeight;\n }\n }\n }\n return canvas;\n}\nconst eventListenerOptions = supportsEventListenerOptions ? {passive: true} : false;\nfunction addListener(node, type, listener) {\n node.addEventListener(type, listener, eventListenerOptions);\n}\nfunction removeListener(chart, type, listener) {\n chart.canvas.removeEventListener(type, listener, eventListenerOptions);\n}\nfunction fromNativeEvent(event, chart) {\n const type = EVENT_TYPES[event.type] || event.type;\n const {x, y} = getRelativePosition(event, chart);\n return {\n type,\n chart,\n native: event,\n x: x !== undefined ? x : null,\n y: y !== undefined ? y : null,\n };\n}\nfunction nodeListContains(nodeList, canvas) {\n for (const node of nodeList) {\n if (node === canvas || node.contains(canvas)) {\n return true;\n }\n }\n}\nfunction createAttachObserver(chart, type, listener) {\n const canvas = chart.canvas;\n const observer = new MutationObserver(entries => {\n let trigger = false;\n for (const entry of entries) {\n trigger = trigger || nodeListContains(entry.addedNodes, canvas);\n trigger = trigger && !nodeListContains(entry.removedNodes, canvas);\n }\n if (trigger) {\n listener();\n }\n });\n observer.observe(document, {childList: true, subtree: true});\n return observer;\n}\nfunction createDetachObserver(chart, type, listener) {\n const canvas = chart.canvas;\n const observer = new MutationObserver(entries => {\n let trigger = false;\n for (const entry of entries) {\n trigger = trigger || nodeListContains(entry.removedNodes, canvas);\n trigger = trigger && !nodeListContains(entry.addedNodes, canvas);\n }\n if (trigger) {\n listener();\n }\n });\n observer.observe(document, {childList: true, subtree: true});\n return observer;\n}\nconst drpListeningCharts = new Map();\nlet oldDevicePixelRatio = 0;\nfunction onWindowResize() {\n const dpr = window.devicePixelRatio;\n if (dpr === oldDevicePixelRatio) {\n return;\n }\n oldDevicePixelRatio = dpr;\n drpListeningCharts.forEach((resize, chart) => {\n if (chart.currentDevicePixelRatio !== dpr) {\n resize();\n }\n });\n}\nfunction listenDevicePixelRatioChanges(chart, resize) {\n if (!drpListeningCharts.size) {\n window.addEventListener('resize', onWindowResize);\n }\n drpListeningCharts.set(chart, resize);\n}\nfunction unlistenDevicePixelRatioChanges(chart) {\n drpListeningCharts.delete(chart);\n if (!drpListeningCharts.size) {\n window.removeEventListener('resize', onWindowResize);\n }\n}\nfunction createResizeObserver(chart, type, listener) {\n const canvas = chart.canvas;\n const container = canvas && _getParentNode(canvas);\n if (!container) {\n return;\n }\n const resize = throttled((width, height) => {\n const w = container.clientWidth;\n listener(width, height);\n if (w < container.clientWidth) {\n listener();\n }\n }, window);\n const observer = new ResizeObserver(entries => {\n const entry = entries[0];\n const width = entry.contentRect.width;\n const height = entry.contentRect.height;\n if (width === 0 && height === 0) {\n return;\n }\n resize(width, height);\n });\n observer.observe(container);\n listenDevicePixelRatioChanges(chart, resize);\n return observer;\n}\nfunction releaseObserver(chart, type, observer) {\n if (observer) {\n observer.disconnect();\n }\n if (type === 'resize') {\n unlistenDevicePixelRatioChanges(chart);\n }\n}\nfunction createProxyAndListen(chart, type, listener) {\n const canvas = chart.canvas;\n const proxy = throttled((event) => {\n if (chart.ctx !== null) {\n listener(fromNativeEvent(event, chart));\n }\n }, chart, (args) => {\n const event = args[0];\n return [event, event.offsetX, event.offsetY];\n });\n addListener(canvas, type, proxy);\n return proxy;\n}\nclass DomPlatform extends BasePlatform {\n acquireContext(canvas, aspectRatio) {\n const context = canvas && canvas.getContext && canvas.getContext('2d');\n if (context && context.canvas === canvas) {\n initCanvas(canvas, aspectRatio);\n return context;\n }\n return null;\n }\n releaseContext(context) {\n const canvas = context.canvas;\n if (!canvas[EXPANDO_KEY]) {\n return false;\n }\n const initial = canvas[EXPANDO_KEY].initial;\n ['height', 'width'].forEach((prop) => {\n const value = initial[prop];\n if (isNullOrUndef(value)) {\n canvas.removeAttribute(prop);\n } else {\n canvas.setAttribute(prop, value);\n }\n });\n const style = initial.style || {};\n Object.keys(style).forEach((key) => {\n canvas.style[key] = style[key];\n });\n canvas.width = canvas.width;\n delete canvas[EXPANDO_KEY];\n return true;\n }\n addEventListener(chart, type, listener) {\n this.removeEventListener(chart, type);\n const proxies = chart.$proxies || (chart.$proxies = {});\n const handlers = {\n attach: createAttachObserver,\n detach: createDetachObserver,\n resize: createResizeObserver\n };\n const handler = handlers[type] || createProxyAndListen;\n proxies[type] = handler(chart, type, listener);\n }\n removeEventListener(chart, type) {\n const proxies = chart.$proxies || (chart.$proxies = {});\n const proxy = proxies[type];\n if (!proxy) {\n return;\n }\n const handlers = {\n attach: releaseObserver,\n detach: releaseObserver,\n resize: releaseObserver\n };\n const handler = handlers[type] || removeListener;\n handler(chart, type, proxy);\n proxies[type] = undefined;\n }\n getDevicePixelRatio() {\n return window.devicePixelRatio;\n }\n getMaximumSize(canvas, width, height, aspectRatio) {\n return getMaximumSize(canvas, width, height, aspectRatio);\n }\n isAttached(canvas) {\n const container = _getParentNode(canvas);\n return !!(container && container.isConnected);\n }\n}\n\nfunction _detectPlatform(canvas) {\n if (!_isDomSupported() || (typeof OffscreenCanvas !== 'undefined' && canvas instanceof OffscreenCanvas)) {\n return BasicPlatform;\n }\n return DomPlatform;\n}\n\nclass PluginService {\n constructor() {\n this._init = [];\n }\n notify(chart, hook, args, filter) {\n if (hook === 'beforeInit') {\n this._init = this._createDescriptors(chart, true);\n this._notify(this._init, chart, 'install');\n }\n const descriptors = filter ? this._descriptors(chart).filter(filter) : this._descriptors(chart);\n const result = this._notify(descriptors, chart, hook, args);\n if (hook === 'afterDestroy') {\n this._notify(descriptors, chart, 'stop');\n this._notify(this._init, chart, 'uninstall');\n }\n return result;\n }\n _notify(descriptors, chart, hook, args) {\n args = args || {};\n for (const descriptor of descriptors) {\n const plugin = descriptor.plugin;\n const method = plugin[hook];\n const params = [chart, args, descriptor.options];\n if (callback(method, params, plugin) === false && args.cancelable) {\n return false;\n }\n }\n return true;\n }\n invalidate() {\n if (!isNullOrUndef(this._cache)) {\n this._oldCache = this._cache;\n this._cache = undefined;\n }\n }\n _descriptors(chart) {\n if (this._cache) {\n return this._cache;\n }\n const descriptors = this._cache = this._createDescriptors(chart);\n this._notifyStateChanges(chart);\n return descriptors;\n }\n _createDescriptors(chart, all) {\n const config = chart && chart.config;\n const options = valueOrDefault(config.options && config.options.plugins, {});\n const plugins = allPlugins(config);\n return options === false && !all ? [] : createDescriptors(chart, plugins, options, all);\n }\n _notifyStateChanges(chart) {\n const previousDescriptors = this._oldCache || [];\n const descriptors = this._cache;\n const diff = (a, b) => a.filter(x => !b.some(y => x.plugin.id === y.plugin.id));\n this._notify(diff(previousDescriptors, descriptors), chart, 'stop');\n this._notify(diff(descriptors, previousDescriptors), chart, 'start');\n }\n}\nfunction allPlugins(config) {\n const localIds = {};\n const plugins = [];\n const keys = Object.keys(registry.plugins.items);\n for (let i = 0; i < keys.length; i++) {\n plugins.push(registry.getPlugin(keys[i]));\n }\n const local = config.plugins || [];\n for (let i = 0; i < local.length; i++) {\n const plugin = local[i];\n if (plugins.indexOf(plugin) === -1) {\n plugins.push(plugin);\n localIds[plugin.id] = true;\n }\n }\n return {plugins, localIds};\n}\nfunction getOpts(options, all) {\n if (!all && options === false) {\n return null;\n }\n if (options === true) {\n return {};\n }\n return options;\n}\nfunction createDescriptors(chart, {plugins, localIds}, options, all) {\n const result = [];\n const context = chart.getContext();\n for (const plugin of plugins) {\n const id = plugin.id;\n const opts = getOpts(options[id], all);\n if (opts === null) {\n continue;\n }\n result.push({\n plugin,\n options: pluginOpts(chart.config, {plugin, local: localIds[id]}, opts, context)\n });\n }\n return result;\n}\nfunction pluginOpts(config, {plugin, local}, opts, context) {\n const keys = config.pluginScopeKeys(plugin);\n const scopes = config.getOptionScopes(opts, keys);\n if (local && plugin.defaults) {\n scopes.push(plugin.defaults);\n }\n return config.createResolver(scopes, context, [''], {\n scriptable: false,\n indexable: false,\n allKeys: true\n });\n}\n\nfunction getIndexAxis(type, options) {\n const datasetDefaults = defaults.datasets[type] || {};\n const datasetOptions = (options.datasets || {})[type] || {};\n return datasetOptions.indexAxis || options.indexAxis || datasetDefaults.indexAxis || 'x';\n}\nfunction getAxisFromDefaultScaleID(id, indexAxis) {\n let axis = id;\n if (id === '_index_') {\n axis = indexAxis;\n } else if (id === '_value_') {\n axis = indexAxis === 'x' ? 'y' : 'x';\n }\n return axis;\n}\nfunction getDefaultScaleIDFromAxis(axis, indexAxis) {\n return axis === indexAxis ? '_index_' : '_value_';\n}\nfunction axisFromPosition(position) {\n if (position === 'top' || position === 'bottom') {\n return 'x';\n }\n if (position === 'left' || position === 'right') {\n return 'y';\n }\n}\nfunction determineAxis(id, scaleOptions) {\n if (id === 'x' || id === 'y') {\n return id;\n }\n return scaleOptions.axis || axisFromPosition(scaleOptions.position) || id.charAt(0).toLowerCase();\n}\nfunction mergeScaleConfig(config, options) {\n const chartDefaults = overrides[config.type] || {scales: {}};\n const configScales = options.scales || {};\n const chartIndexAxis = getIndexAxis(config.type, options);\n const firstIDs = Object.create(null);\n const scales = Object.create(null);\n Object.keys(configScales).forEach(id => {\n const scaleConf = configScales[id];\n if (!isObject(scaleConf)) {\n return console.error(`Invalid scale configuration for scale: ${id}`);\n }\n if (scaleConf._proxy) {\n return console.warn(`Ignoring resolver passed as options for scale: ${id}`);\n }\n const axis = determineAxis(id, scaleConf);\n const defaultId = getDefaultScaleIDFromAxis(axis, chartIndexAxis);\n const defaultScaleOptions = chartDefaults.scales || {};\n firstIDs[axis] = firstIDs[axis] || id;\n scales[id] = mergeIf(Object.create(null), [{axis}, scaleConf, defaultScaleOptions[axis], defaultScaleOptions[defaultId]]);\n });\n config.data.datasets.forEach(dataset => {\n const type = dataset.type || config.type;\n const indexAxis = dataset.indexAxis || getIndexAxis(type, options);\n const datasetDefaults = overrides[type] || {};\n const defaultScaleOptions = datasetDefaults.scales || {};\n Object.keys(defaultScaleOptions).forEach(defaultID => {\n const axis = getAxisFromDefaultScaleID(defaultID, indexAxis);\n const id = dataset[axis + 'AxisID'] || firstIDs[axis] || axis;\n scales[id] = scales[id] || Object.create(null);\n mergeIf(scales[id], [{axis}, configScales[id], defaultScaleOptions[defaultID]]);\n });\n });\n Object.keys(scales).forEach(key => {\n const scale = scales[key];\n mergeIf(scale, [defaults.scales[scale.type], defaults.scale]);\n });\n return scales;\n}\nfunction initOptions(config) {\n const options = config.options || (config.options = {});\n options.plugins = valueOrDefault(options.plugins, {});\n options.scales = mergeScaleConfig(config, options);\n}\nfunction initData(data) {\n data = data || {};\n data.datasets = data.datasets || [];\n data.labels = data.labels || [];\n return data;\n}\nfunction initConfig(config) {\n config = config || {};\n config.data = initData(config.data);\n initOptions(config);\n return config;\n}\nconst keyCache = new Map();\nconst keysCached = new Set();\nfunction cachedKeys(cacheKey, generate) {\n let keys = keyCache.get(cacheKey);\n if (!keys) {\n keys = generate();\n keyCache.set(cacheKey, keys);\n keysCached.add(keys);\n }\n return keys;\n}\nconst addIfFound = (set, obj, key) => {\n const opts = resolveObjectKey(obj, key);\n if (opts !== undefined) {\n set.add(opts);\n }\n};\nclass Config {\n constructor(config) {\n this._config = initConfig(config);\n this._scopeCache = new Map();\n this._resolverCache = new Map();\n }\n get platform() {\n return this._config.platform;\n }\n get type() {\n return this._config.type;\n }\n set type(type) {\n this._config.type = type;\n }\n get data() {\n return this._config.data;\n }\n set data(data) {\n this._config.data = initData(data);\n }\n get options() {\n return this._config.options;\n }\n set options(options) {\n this._config.options = options;\n }\n get plugins() {\n return this._config.plugins;\n }\n update() {\n const config = this._config;\n this.clearCache();\n initOptions(config);\n }\n clearCache() {\n this._scopeCache.clear();\n this._resolverCache.clear();\n }\n datasetScopeKeys(datasetType) {\n return cachedKeys(datasetType,\n () => [[\n `datasets.${datasetType}`,\n ''\n ]]);\n }\n datasetAnimationScopeKeys(datasetType, transition) {\n return cachedKeys(`${datasetType}.transition.${transition}`,\n () => [\n [\n `datasets.${datasetType}.transitions.${transition}`,\n `transitions.${transition}`,\n ],\n [\n `datasets.${datasetType}`,\n ''\n ]\n ]);\n }\n datasetElementScopeKeys(datasetType, elementType) {\n return cachedKeys(`${datasetType}-${elementType}`,\n () => [[\n `datasets.${datasetType}.elements.${elementType}`,\n `datasets.${datasetType}`,\n `elements.${elementType}`,\n ''\n ]]);\n }\n pluginScopeKeys(plugin) {\n const id = plugin.id;\n const type = this.type;\n return cachedKeys(`${type}-plugin-${id}`,\n () => [[\n `plugins.${id}`,\n ...plugin.additionalOptionScopes || [],\n ]]);\n }\n _cachedScopes(mainScope, resetCache) {\n const _scopeCache = this._scopeCache;\n let cache = _scopeCache.get(mainScope);\n if (!cache || resetCache) {\n cache = new Map();\n _scopeCache.set(mainScope, cache);\n }\n return cache;\n }\n getOptionScopes(mainScope, keyLists, resetCache) {\n const {options, type} = this;\n const cache = this._cachedScopes(mainScope, resetCache);\n const cached = cache.get(keyLists);\n if (cached) {\n return cached;\n }\n const scopes = new Set();\n keyLists.forEach(keys => {\n if (mainScope) {\n scopes.add(mainScope);\n keys.forEach(key => addIfFound(scopes, mainScope, key));\n }\n keys.forEach(key => addIfFound(scopes, options, key));\n keys.forEach(key => addIfFound(scopes, overrides[type] || {}, key));\n keys.forEach(key => addIfFound(scopes, defaults, key));\n keys.forEach(key => addIfFound(scopes, descriptors, key));\n });\n const array = Array.from(scopes);\n if (array.length === 0) {\n array.push(Object.create(null));\n }\n if (keysCached.has(keyLists)) {\n cache.set(keyLists, array);\n }\n return array;\n }\n chartOptionScopes() {\n const {options, type} = this;\n return [\n options,\n overrides[type] || {},\n defaults.datasets[type] || {},\n {type},\n defaults,\n descriptors\n ];\n }\n resolveNamedOptions(scopes, names, context, prefixes = ['']) {\n const result = {$shared: true};\n const {resolver, subPrefixes} = getResolver(this._resolverCache, scopes, prefixes);\n let options = resolver;\n if (needContext(resolver, names)) {\n result.$shared = false;\n context = isFunction(context) ? context() : context;\n const subResolver = this.createResolver(scopes, context, subPrefixes);\n options = _attachContext(resolver, context, subResolver);\n }\n for (const prop of names) {\n result[prop] = options[prop];\n }\n return result;\n }\n createResolver(scopes, context, prefixes = [''], descriptorDefaults) {\n const {resolver} = getResolver(this._resolverCache, scopes, prefixes);\n return isObject(context)\n ? _attachContext(resolver, context, undefined, descriptorDefaults)\n : resolver;\n }\n}\nfunction getResolver(resolverCache, scopes, prefixes) {\n let cache = resolverCache.get(scopes);\n if (!cache) {\n cache = new Map();\n resolverCache.set(scopes, cache);\n }\n const cacheKey = prefixes.join();\n let cached = cache.get(cacheKey);\n if (!cached) {\n const resolver = _createResolver(scopes, prefixes);\n cached = {\n resolver,\n subPrefixes: prefixes.filter(p => !p.toLowerCase().includes('hover'))\n };\n cache.set(cacheKey, cached);\n }\n return cached;\n}\nconst hasFunction = value => isObject(value)\n && Object.getOwnPropertyNames(value).reduce((acc, key) => acc || isFunction(value[key]), false);\nfunction needContext(proxy, names) {\n const {isScriptable, isIndexable} = _descriptors(proxy);\n for (const prop of names) {\n const scriptable = isScriptable(prop);\n const indexable = isIndexable(prop);\n const value = (indexable || scriptable) && proxy[prop];\n if ((scriptable && (isFunction(value) || hasFunction(value)))\n || (indexable && isArray(value))) {\n return true;\n }\n }\n return false;\n}\n\nvar version = \"3.9.1\";\n\nconst KNOWN_POSITIONS = ['top', 'bottom', 'left', 'right', 'chartArea'];\nfunction positionIsHorizontal(position, axis) {\n return position === 'top' || position === 'bottom' || (KNOWN_POSITIONS.indexOf(position) === -1 && axis === 'x');\n}\nfunction compare2Level(l1, l2) {\n return function(a, b) {\n return a[l1] === b[l1]\n ? a[l2] - b[l2]\n : a[l1] - b[l1];\n };\n}\nfunction onAnimationsComplete(context) {\n const chart = context.chart;\n const animationOptions = chart.options.animation;\n chart.notifyPlugins('afterRender');\n callback(animationOptions && animationOptions.onComplete, [context], chart);\n}\nfunction onAnimationProgress(context) {\n const chart = context.chart;\n const animationOptions = chart.options.animation;\n callback(animationOptions && animationOptions.onProgress, [context], chart);\n}\nfunction getCanvas(item) {\n if (_isDomSupported() && typeof item === 'string') {\n item = document.getElementById(item);\n } else if (item && item.length) {\n item = item[0];\n }\n if (item && item.canvas) {\n item = item.canvas;\n }\n return item;\n}\nconst instances = {};\nconst getChart = (key) => {\n const canvas = getCanvas(key);\n return Object.values(instances).filter((c) => c.canvas === canvas).pop();\n};\nfunction moveNumericKeys(obj, start, move) {\n const keys = Object.keys(obj);\n for (const key of keys) {\n const intKey = +key;\n if (intKey >= start) {\n const value = obj[key];\n delete obj[key];\n if (move > 0 || intKey > start) {\n obj[intKey + move] = value;\n }\n }\n }\n}\nfunction determineLastEvent(e, lastEvent, inChartArea, isClick) {\n if (!inChartArea || e.type === 'mouseout') {\n return null;\n }\n if (isClick) {\n return lastEvent;\n }\n return e;\n}\nclass Chart {\n constructor(item, userConfig) {\n const config = this.config = new Config(userConfig);\n const initialCanvas = getCanvas(item);\n const existingChart = getChart(initialCanvas);\n if (existingChart) {\n throw new Error(\n 'Canvas is already in use. Chart with ID \\'' + existingChart.id + '\\'' +\n\t\t\t\t' must be destroyed before the canvas with ID \\'' + existingChart.canvas.id + '\\' can be reused.'\n );\n }\n const options = config.createResolver(config.chartOptionScopes(), this.getContext());\n this.platform = new (config.platform || _detectPlatform(initialCanvas))();\n this.platform.updateConfig(config);\n const context = this.platform.acquireContext(initialCanvas, options.aspectRatio);\n const canvas = context && context.canvas;\n const height = canvas && canvas.height;\n const width = canvas && canvas.width;\n this.id = uid();\n this.ctx = context;\n this.canvas = canvas;\n this.width = width;\n this.height = height;\n this._options = options;\n this._aspectRatio = this.aspectRatio;\n this._layers = [];\n this._metasets = [];\n this._stacks = undefined;\n this.boxes = [];\n this.currentDevicePixelRatio = undefined;\n this.chartArea = undefined;\n this._active = [];\n this._lastEvent = undefined;\n this._listeners = {};\n this._responsiveListeners = undefined;\n this._sortedMetasets = [];\n this.scales = {};\n this._plugins = new PluginService();\n this.$proxies = {};\n this._hiddenIndices = {};\n this.attached = false;\n this._animationsDisabled = undefined;\n this.$context = undefined;\n this._doResize = debounce(mode => this.update(mode), options.resizeDelay || 0);\n this._dataChanges = [];\n instances[this.id] = this;\n if (!context || !canvas) {\n console.error(\"Failed to create chart: can't acquire context from the given item\");\n return;\n }\n animator.listen(this, 'complete', onAnimationsComplete);\n animator.listen(this, 'progress', onAnimationProgress);\n this._initialize();\n if (this.attached) {\n this.update();\n }\n }\n get aspectRatio() {\n const {options: {aspectRatio, maintainAspectRatio}, width, height, _aspectRatio} = this;\n if (!isNullOrUndef(aspectRatio)) {\n return aspectRatio;\n }\n if (maintainAspectRatio && _aspectRatio) {\n return _aspectRatio;\n }\n return height ? width / height : null;\n }\n get data() {\n return this.config.data;\n }\n set data(data) {\n this.config.data = data;\n }\n get options() {\n return this._options;\n }\n set options(options) {\n this.config.options = options;\n }\n _initialize() {\n this.notifyPlugins('beforeInit');\n if (this.options.responsive) {\n this.resize();\n } else {\n retinaScale(this, this.options.devicePixelRatio);\n }\n this.bindEvents();\n this.notifyPlugins('afterInit');\n return this;\n }\n clear() {\n clearCanvas(this.canvas, this.ctx);\n return this;\n }\n stop() {\n animator.stop(this);\n return this;\n }\n resize(width, height) {\n if (!animator.running(this)) {\n this._resize(width, height);\n } else {\n this._resizeBeforeDraw = {width, height};\n }\n }\n _resize(width, height) {\n const options = this.options;\n const canvas = this.canvas;\n const aspectRatio = options.maintainAspectRatio && this.aspectRatio;\n const newSize = this.platform.getMaximumSize(canvas, width, height, aspectRatio);\n const newRatio = options.devicePixelRatio || this.platform.getDevicePixelRatio();\n const mode = this.width ? 'resize' : 'attach';\n this.width = newSize.width;\n this.height = newSize.height;\n this._aspectRatio = this.aspectRatio;\n if (!retinaScale(this, newRatio, true)) {\n return;\n }\n this.notifyPlugins('resize', {size: newSize});\n callback(options.onResize, [this, newSize], this);\n if (this.attached) {\n if (this._doResize(mode)) {\n this.render();\n }\n }\n }\n ensureScalesHaveIDs() {\n const options = this.options;\n const scalesOptions = options.scales || {};\n each(scalesOptions, (axisOptions, axisID) => {\n axisOptions.id = axisID;\n });\n }\n buildOrUpdateScales() {\n const options = this.options;\n const scaleOpts = options.scales;\n const scales = this.scales;\n const updated = Object.keys(scales).reduce((obj, id) => {\n obj[id] = false;\n return obj;\n }, {});\n let items = [];\n if (scaleOpts) {\n items = items.concat(\n Object.keys(scaleOpts).map((id) => {\n const scaleOptions = scaleOpts[id];\n const axis = determineAxis(id, scaleOptions);\n const isRadial = axis === 'r';\n const isHorizontal = axis === 'x';\n return {\n options: scaleOptions,\n dposition: isRadial ? 'chartArea' : isHorizontal ? 'bottom' : 'left',\n dtype: isRadial ? 'radialLinear' : isHorizontal ? 'category' : 'linear'\n };\n })\n );\n }\n each(items, (item) => {\n const scaleOptions = item.options;\n const id = scaleOptions.id;\n const axis = determineAxis(id, scaleOptions);\n const scaleType = valueOrDefault(scaleOptions.type, item.dtype);\n if (scaleOptions.position === undefined || positionIsHorizontal(scaleOptions.position, axis) !== positionIsHorizontal(item.dposition)) {\n scaleOptions.position = item.dposition;\n }\n updated[id] = true;\n let scale = null;\n if (id in scales && scales[id].type === scaleType) {\n scale = scales[id];\n } else {\n const scaleClass = registry.getScale(scaleType);\n scale = new scaleClass({\n id,\n type: scaleType,\n ctx: this.ctx,\n chart: this\n });\n scales[scale.id] = scale;\n }\n scale.init(scaleOptions, options);\n });\n each(updated, (hasUpdated, id) => {\n if (!hasUpdated) {\n delete scales[id];\n }\n });\n each(scales, (scale) => {\n layouts.configure(this, scale, scale.options);\n layouts.addBox(this, scale);\n });\n }\n _updateMetasets() {\n const metasets = this._metasets;\n const numData = this.data.datasets.length;\n const numMeta = metasets.length;\n metasets.sort((a, b) => a.index - b.index);\n if (numMeta > numData) {\n for (let i = numData; i < numMeta; ++i) {\n this._destroyDatasetMeta(i);\n }\n metasets.splice(numData, numMeta - numData);\n }\n this._sortedMetasets = metasets.slice(0).sort(compare2Level('order', 'index'));\n }\n _removeUnreferencedMetasets() {\n const {_metasets: metasets, data: {datasets}} = this;\n if (metasets.length > datasets.length) {\n delete this._stacks;\n }\n metasets.forEach((meta, index) => {\n if (datasets.filter(x => x === meta._dataset).length === 0) {\n this._destroyDatasetMeta(index);\n }\n });\n }\n buildOrUpdateControllers() {\n const newControllers = [];\n const datasets = this.data.datasets;\n let i, ilen;\n this._removeUnreferencedMetasets();\n for (i = 0, ilen = datasets.length; i < ilen; i++) {\n const dataset = datasets[i];\n let meta = this.getDatasetMeta(i);\n const type = dataset.type || this.config.type;\n if (meta.type && meta.type !== type) {\n this._destroyDatasetMeta(i);\n meta = this.getDatasetMeta(i);\n }\n meta.type = type;\n meta.indexAxis = dataset.indexAxis || getIndexAxis(type, this.options);\n meta.order = dataset.order || 0;\n meta.index = i;\n meta.label = '' + dataset.label;\n meta.visible = this.isDatasetVisible(i);\n if (meta.controller) {\n meta.controller.updateIndex(i);\n meta.controller.linkScales();\n } else {\n const ControllerClass = registry.getController(type);\n const {datasetElementType, dataElementType} = defaults.datasets[type];\n Object.assign(ControllerClass.prototype, {\n dataElementType: registry.getElement(dataElementType),\n datasetElementType: datasetElementType && registry.getElement(datasetElementType)\n });\n meta.controller = new ControllerClass(this, i);\n newControllers.push(meta.controller);\n }\n }\n this._updateMetasets();\n return newControllers;\n }\n _resetElements() {\n each(this.data.datasets, (dataset, datasetIndex) => {\n this.getDatasetMeta(datasetIndex).controller.reset();\n }, this);\n }\n reset() {\n this._resetElements();\n this.notifyPlugins('reset');\n }\n update(mode) {\n const config = this.config;\n config.update();\n const options = this._options = config.createResolver(config.chartOptionScopes(), this.getContext());\n const animsDisabled = this._animationsDisabled = !options.animation;\n this._updateScales();\n this._checkEventBindings();\n this._updateHiddenIndices();\n this._plugins.invalidate();\n if (this.notifyPlugins('beforeUpdate', {mode, cancelable: true}) === false) {\n return;\n }\n const newControllers = this.buildOrUpdateControllers();\n this.notifyPlugins('beforeElementsUpdate');\n let minPadding = 0;\n for (let i = 0, ilen = this.data.datasets.length; i < ilen; i++) {\n const {controller} = this.getDatasetMeta(i);\n const reset = !animsDisabled && newControllers.indexOf(controller) === -1;\n controller.buildOrUpdateElements(reset);\n minPadding = Math.max(+controller.getMaxOverflow(), minPadding);\n }\n minPadding = this._minPadding = options.layout.autoPadding ? minPadding : 0;\n this._updateLayout(minPadding);\n if (!animsDisabled) {\n each(newControllers, (controller) => {\n controller.reset();\n });\n }\n this._updateDatasets(mode);\n this.notifyPlugins('afterUpdate', {mode});\n this._layers.sort(compare2Level('z', '_idx'));\n const {_active, _lastEvent} = this;\n if (_lastEvent) {\n this._eventHandler(_lastEvent, true);\n } else if (_active.length) {\n this._updateHoverStyles(_active, _active, true);\n }\n this.render();\n }\n _updateScales() {\n each(this.scales, (scale) => {\n layouts.removeBox(this, scale);\n });\n this.ensureScalesHaveIDs();\n this.buildOrUpdateScales();\n }\n _checkEventBindings() {\n const options = this.options;\n const existingEvents = new Set(Object.keys(this._listeners));\n const newEvents = new Set(options.events);\n if (!setsEqual(existingEvents, newEvents) || !!this._responsiveListeners !== options.responsive) {\n this.unbindEvents();\n this.bindEvents();\n }\n }\n _updateHiddenIndices() {\n const {_hiddenIndices} = this;\n const changes = this._getUniformDataChanges() || [];\n for (const {method, start, count} of changes) {\n const move = method === '_removeElements' ? -count : count;\n moveNumericKeys(_hiddenIndices, start, move);\n }\n }\n _getUniformDataChanges() {\n const _dataChanges = this._dataChanges;\n if (!_dataChanges || !_dataChanges.length) {\n return;\n }\n this._dataChanges = [];\n const datasetCount = this.data.datasets.length;\n const makeSet = (idx) => new Set(\n _dataChanges\n .filter(c => c[0] === idx)\n .map((c, i) => i + ',' + c.splice(1).join(','))\n );\n const changeSet = makeSet(0);\n for (let i = 1; i < datasetCount; i++) {\n if (!setsEqual(changeSet, makeSet(i))) {\n return;\n }\n }\n return Array.from(changeSet)\n .map(c => c.split(','))\n .map(a => ({method: a[1], start: +a[2], count: +a[3]}));\n }\n _updateLayout(minPadding) {\n if (this.notifyPlugins('beforeLayout', {cancelable: true}) === false) {\n return;\n }\n layouts.update(this, this.width, this.height, minPadding);\n const area = this.chartArea;\n const noArea = area.width <= 0 || area.height <= 0;\n this._layers = [];\n each(this.boxes, (box) => {\n if (noArea && box.position === 'chartArea') {\n return;\n }\n if (box.configure) {\n box.configure();\n }\n this._layers.push(...box._layers());\n }, this);\n this._layers.forEach((item, index) => {\n item._idx = index;\n });\n this.notifyPlugins('afterLayout');\n }\n _updateDatasets(mode) {\n if (this.notifyPlugins('beforeDatasetsUpdate', {mode, cancelable: true}) === false) {\n return;\n }\n for (let i = 0, ilen = this.data.datasets.length; i < ilen; ++i) {\n this.getDatasetMeta(i).controller.configure();\n }\n for (let i = 0, ilen = this.data.datasets.length; i < ilen; ++i) {\n this._updateDataset(i, isFunction(mode) ? mode({datasetIndex: i}) : mode);\n }\n this.notifyPlugins('afterDatasetsUpdate', {mode});\n }\n _updateDataset(index, mode) {\n const meta = this.getDatasetMeta(index);\n const args = {meta, index, mode, cancelable: true};\n if (this.notifyPlugins('beforeDatasetUpdate', args) === false) {\n return;\n }\n meta.controller._update(mode);\n args.cancelable = false;\n this.notifyPlugins('afterDatasetUpdate', args);\n }\n render() {\n if (this.notifyPlugins('beforeRender', {cancelable: true}) === false) {\n return;\n }\n if (animator.has(this)) {\n if (this.attached && !animator.running(this)) {\n animator.start(this);\n }\n } else {\n this.draw();\n onAnimationsComplete({chart: this});\n }\n }\n draw() {\n let i;\n if (this._resizeBeforeDraw) {\n const {width, height} = this._resizeBeforeDraw;\n this._resize(width, height);\n this._resizeBeforeDraw = null;\n }\n this.clear();\n if (this.width <= 0 || this.height <= 0) {\n return;\n }\n if (this.notifyPlugins('beforeDraw', {cancelable: true}) === false) {\n return;\n }\n const layers = this._layers;\n for (i = 0; i < layers.length && layers[i].z <= 0; ++i) {\n layers[i].draw(this.chartArea);\n }\n this._drawDatasets();\n for (; i < layers.length; ++i) {\n layers[i].draw(this.chartArea);\n }\n this.notifyPlugins('afterDraw');\n }\n _getSortedDatasetMetas(filterVisible) {\n const metasets = this._sortedMetasets;\n const result = [];\n let i, ilen;\n for (i = 0, ilen = metasets.length; i < ilen; ++i) {\n const meta = metasets[i];\n if (!filterVisible || meta.visible) {\n result.push(meta);\n }\n }\n return result;\n }\n getSortedVisibleDatasetMetas() {\n return this._getSortedDatasetMetas(true);\n }\n _drawDatasets() {\n if (this.notifyPlugins('beforeDatasetsDraw', {cancelable: true}) === false) {\n return;\n }\n const metasets = this.getSortedVisibleDatasetMetas();\n for (let i = metasets.length - 1; i >= 0; --i) {\n this._drawDataset(metasets[i]);\n }\n this.notifyPlugins('afterDatasetsDraw');\n }\n _drawDataset(meta) {\n const ctx = this.ctx;\n const clip = meta._clip;\n const useClip = !clip.disabled;\n const area = this.chartArea;\n const args = {\n meta,\n index: meta.index,\n cancelable: true\n };\n if (this.notifyPlugins('beforeDatasetDraw', args) === false) {\n return;\n }\n if (useClip) {\n clipArea(ctx, {\n left: clip.left === false ? 0 : area.left - clip.left,\n right: clip.right === false ? this.width : area.right + clip.right,\n top: clip.top === false ? 0 : area.top - clip.top,\n bottom: clip.bottom === false ? this.height : area.bottom + clip.bottom\n });\n }\n meta.controller.draw();\n if (useClip) {\n unclipArea(ctx);\n }\n args.cancelable = false;\n this.notifyPlugins('afterDatasetDraw', args);\n }\n isPointInArea(point) {\n return _isPointInArea(point, this.chartArea, this._minPadding);\n }\n getElementsAtEventForMode(e, mode, options, useFinalPosition) {\n const method = Interaction.modes[mode];\n if (typeof method === 'function') {\n return method(this, e, options, useFinalPosition);\n }\n return [];\n }\n getDatasetMeta(datasetIndex) {\n const dataset = this.data.datasets[datasetIndex];\n const metasets = this._metasets;\n let meta = metasets.filter(x => x && x._dataset === dataset).pop();\n if (!meta) {\n meta = {\n type: null,\n data: [],\n dataset: null,\n controller: null,\n hidden: null,\n xAxisID: null,\n yAxisID: null,\n order: dataset && dataset.order || 0,\n index: datasetIndex,\n _dataset: dataset,\n _parsed: [],\n _sorted: false\n };\n metasets.push(meta);\n }\n return meta;\n }\n getContext() {\n return this.$context || (this.$context = createContext(null, {chart: this, type: 'chart'}));\n }\n getVisibleDatasetCount() {\n return this.getSortedVisibleDatasetMetas().length;\n }\n isDatasetVisible(datasetIndex) {\n const dataset = this.data.datasets[datasetIndex];\n if (!dataset) {\n return false;\n }\n const meta = this.getDatasetMeta(datasetIndex);\n return typeof meta.hidden === 'boolean' ? !meta.hidden : !dataset.hidden;\n }\n setDatasetVisibility(datasetIndex, visible) {\n const meta = this.getDatasetMeta(datasetIndex);\n meta.hidden = !visible;\n }\n toggleDataVisibility(index) {\n this._hiddenIndices[index] = !this._hiddenIndices[index];\n }\n getDataVisibility(index) {\n return !this._hiddenIndices[index];\n }\n _updateVisibility(datasetIndex, dataIndex, visible) {\n const mode = visible ? 'show' : 'hide';\n const meta = this.getDatasetMeta(datasetIndex);\n const anims = meta.controller._resolveAnimations(undefined, mode);\n if (defined(dataIndex)) {\n meta.data[dataIndex].hidden = !visible;\n this.update();\n } else {\n this.setDatasetVisibility(datasetIndex, visible);\n anims.update(meta, {visible});\n this.update((ctx) => ctx.datasetIndex === datasetIndex ? mode : undefined);\n }\n }\n hide(datasetIndex, dataIndex) {\n this._updateVisibility(datasetIndex, dataIndex, false);\n }\n show(datasetIndex, dataIndex) {\n this._updateVisibility(datasetIndex, dataIndex, true);\n }\n _destroyDatasetMeta(datasetIndex) {\n const meta = this._metasets[datasetIndex];\n if (meta && meta.controller) {\n meta.controller._destroy();\n }\n delete this._metasets[datasetIndex];\n }\n _stop() {\n let i, ilen;\n this.stop();\n animator.remove(this);\n for (i = 0, ilen = this.data.datasets.length; i < ilen; ++i) {\n this._destroyDatasetMeta(i);\n }\n }\n destroy() {\n this.notifyPlugins('beforeDestroy');\n const {canvas, ctx} = this;\n this._stop();\n this.config.clearCache();\n if (canvas) {\n this.unbindEvents();\n clearCanvas(canvas, ctx);\n this.platform.releaseContext(ctx);\n this.canvas = null;\n this.ctx = null;\n }\n this.notifyPlugins('destroy');\n delete instances[this.id];\n this.notifyPlugins('afterDestroy');\n }\n toBase64Image(...args) {\n return this.canvas.toDataURL(...args);\n }\n bindEvents() {\n this.bindUserEvents();\n if (this.options.responsive) {\n this.bindResponsiveEvents();\n } else {\n this.attached = true;\n }\n }\n bindUserEvents() {\n const listeners = this._listeners;\n const platform = this.platform;\n const _add = (type, listener) => {\n platform.addEventListener(this, type, listener);\n listeners[type] = listener;\n };\n const listener = (e, x, y) => {\n e.offsetX = x;\n e.offsetY = y;\n this._eventHandler(e);\n };\n each(this.options.events, (type) => _add(type, listener));\n }\n bindResponsiveEvents() {\n if (!this._responsiveListeners) {\n this._responsiveListeners = {};\n }\n const listeners = this._responsiveListeners;\n const platform = this.platform;\n const _add = (type, listener) => {\n platform.addEventListener(this, type, listener);\n listeners[type] = listener;\n };\n const _remove = (type, listener) => {\n if (listeners[type]) {\n platform.removeEventListener(this, type, listener);\n delete listeners[type];\n }\n };\n const listener = (width, height) => {\n if (this.canvas) {\n this.resize(width, height);\n }\n };\n let detached;\n const attached = () => {\n _remove('attach', attached);\n this.attached = true;\n this.resize();\n _add('resize', listener);\n _add('detach', detached);\n };\n detached = () => {\n this.attached = false;\n _remove('resize', listener);\n this._stop();\n this._resize(0, 0);\n _add('attach', attached);\n };\n if (platform.isAttached(this.canvas)) {\n attached();\n } else {\n detached();\n }\n }\n unbindEvents() {\n each(this._listeners, (listener, type) => {\n this.platform.removeEventListener(this, type, listener);\n });\n this._listeners = {};\n each(this._responsiveListeners, (listener, type) => {\n this.platform.removeEventListener(this, type, listener);\n });\n this._responsiveListeners = undefined;\n }\n updateHoverStyle(items, mode, enabled) {\n const prefix = enabled ? 'set' : 'remove';\n let meta, item, i, ilen;\n if (mode === 'dataset') {\n meta = this.getDatasetMeta(items[0].datasetIndex);\n meta.controller['_' + prefix + 'DatasetHoverStyle']();\n }\n for (i = 0, ilen = items.length; i < ilen; ++i) {\n item = items[i];\n const controller = item && this.getDatasetMeta(item.datasetIndex).controller;\n if (controller) {\n controller[prefix + 'HoverStyle'](item.element, item.datasetIndex, item.index);\n }\n }\n }\n getActiveElements() {\n return this._active || [];\n }\n setActiveElements(activeElements) {\n const lastActive = this._active || [];\n const active = activeElements.map(({datasetIndex, index}) => {\n const meta = this.getDatasetMeta(datasetIndex);\n if (!meta) {\n throw new Error('No dataset found at index ' + datasetIndex);\n }\n return {\n datasetIndex,\n element: meta.data[index],\n index,\n };\n });\n const changed = !_elementsEqual(active, lastActive);\n if (changed) {\n this._active = active;\n this._lastEvent = null;\n this._updateHoverStyles(active, lastActive);\n }\n }\n notifyPlugins(hook, args, filter) {\n return this._plugins.notify(this, hook, args, filter);\n }\n _updateHoverStyles(active, lastActive, replay) {\n const hoverOptions = this.options.hover;\n const diff = (a, b) => a.filter(x => !b.some(y => x.datasetIndex === y.datasetIndex && x.index === y.index));\n const deactivated = diff(lastActive, active);\n const activated = replay ? active : diff(active, lastActive);\n if (deactivated.length) {\n this.updateHoverStyle(deactivated, hoverOptions.mode, false);\n }\n if (activated.length && hoverOptions.mode) {\n this.updateHoverStyle(activated, hoverOptions.mode, true);\n }\n }\n _eventHandler(e, replay) {\n const args = {\n event: e,\n replay,\n cancelable: true,\n inChartArea: this.isPointInArea(e)\n };\n const eventFilter = (plugin) => (plugin.options.events || this.options.events).includes(e.native.type);\n if (this.notifyPlugins('beforeEvent', args, eventFilter) === false) {\n return;\n }\n const changed = this._handleEvent(e, replay, args.inChartArea);\n args.cancelable = false;\n this.notifyPlugins('afterEvent', args, eventFilter);\n if (changed || args.changed) {\n this.render();\n }\n return this;\n }\n _handleEvent(e, replay, inChartArea) {\n const {_active: lastActive = [], options} = this;\n const useFinalPosition = replay;\n const active = this._getActiveElements(e, lastActive, inChartArea, useFinalPosition);\n const isClick = _isClickEvent(e);\n const lastEvent = determineLastEvent(e, this._lastEvent, inChartArea, isClick);\n if (inChartArea) {\n this._lastEvent = null;\n callback(options.onHover, [e, active, this], this);\n if (isClick) {\n callback(options.onClick, [e, active, this], this);\n }\n }\n const changed = !_elementsEqual(active, lastActive);\n if (changed || replay) {\n this._active = active;\n this._updateHoverStyles(active, lastActive, replay);\n }\n this._lastEvent = lastEvent;\n return changed;\n }\n _getActiveElements(e, lastActive, inChartArea, useFinalPosition) {\n if (e.type === 'mouseout') {\n return [];\n }\n if (!inChartArea) {\n return lastActive;\n }\n const hoverOptions = this.options.hover;\n return this.getElementsAtEventForMode(e, hoverOptions.mode, hoverOptions, useFinalPosition);\n }\n}\nconst invalidatePlugins = () => each(Chart.instances, (chart) => chart._plugins.invalidate());\nconst enumerable = true;\nObject.defineProperties(Chart, {\n defaults: {\n enumerable,\n value: defaults\n },\n instances: {\n enumerable,\n value: instances\n },\n overrides: {\n enumerable,\n value: overrides\n },\n registry: {\n enumerable,\n value: registry\n },\n version: {\n enumerable,\n value: version\n },\n getChart: {\n enumerable,\n value: getChart\n },\n register: {\n enumerable,\n value: (...items) => {\n registry.add(...items);\n invalidatePlugins();\n }\n },\n unregister: {\n enumerable,\n value: (...items) => {\n registry.remove(...items);\n invalidatePlugins();\n }\n }\n});\n\nfunction clipArc(ctx, element, endAngle) {\n const {startAngle, pixelMargin, x, y, outerRadius, innerRadius} = element;\n let angleMargin = pixelMargin / outerRadius;\n ctx.beginPath();\n ctx.arc(x, y, outerRadius, startAngle - angleMargin, endAngle + angleMargin);\n if (innerRadius > pixelMargin) {\n angleMargin = pixelMargin / innerRadius;\n ctx.arc(x, y, innerRadius, endAngle + angleMargin, startAngle - angleMargin, true);\n } else {\n ctx.arc(x, y, pixelMargin, endAngle + HALF_PI, startAngle - HALF_PI);\n }\n ctx.closePath();\n ctx.clip();\n}\nfunction toRadiusCorners(value) {\n return _readValueToProps(value, ['outerStart', 'outerEnd', 'innerStart', 'innerEnd']);\n}\nfunction parseBorderRadius$1(arc, innerRadius, outerRadius, angleDelta) {\n const o = toRadiusCorners(arc.options.borderRadius);\n const halfThickness = (outerRadius - innerRadius) / 2;\n const innerLimit = Math.min(halfThickness, angleDelta * innerRadius / 2);\n const computeOuterLimit = (val) => {\n const outerArcLimit = (outerRadius - Math.min(halfThickness, val)) * angleDelta / 2;\n return _limitValue(val, 0, Math.min(halfThickness, outerArcLimit));\n };\n return {\n outerStart: computeOuterLimit(o.outerStart),\n outerEnd: computeOuterLimit(o.outerEnd),\n innerStart: _limitValue(o.innerStart, 0, innerLimit),\n innerEnd: _limitValue(o.innerEnd, 0, innerLimit),\n };\n}\nfunction rThetaToXY(r, theta, x, y) {\n return {\n x: x + r * Math.cos(theta),\n y: y + r * Math.sin(theta),\n };\n}\nfunction pathArc(ctx, element, offset, spacing, end, circular) {\n const {x, y, startAngle: start, pixelMargin, innerRadius: innerR} = element;\n const outerRadius = Math.max(element.outerRadius + spacing + offset - pixelMargin, 0);\n const innerRadius = innerR > 0 ? innerR + spacing + offset + pixelMargin : 0;\n let spacingOffset = 0;\n const alpha = end - start;\n if (spacing) {\n const noSpacingInnerRadius = innerR > 0 ? innerR - spacing : 0;\n const noSpacingOuterRadius = outerRadius > 0 ? outerRadius - spacing : 0;\n const avNogSpacingRadius = (noSpacingInnerRadius + noSpacingOuterRadius) / 2;\n const adjustedAngle = avNogSpacingRadius !== 0 ? (alpha * avNogSpacingRadius) / (avNogSpacingRadius + spacing) : alpha;\n spacingOffset = (alpha - adjustedAngle) / 2;\n }\n const beta = Math.max(0.001, alpha * outerRadius - offset / PI) / outerRadius;\n const angleOffset = (alpha - beta) / 2;\n const startAngle = start + angleOffset + spacingOffset;\n const endAngle = end - angleOffset - spacingOffset;\n const {outerStart, outerEnd, innerStart, innerEnd} = parseBorderRadius$1(element, innerRadius, outerRadius, endAngle - startAngle);\n const outerStartAdjustedRadius = outerRadius - outerStart;\n const outerEndAdjustedRadius = outerRadius - outerEnd;\n const outerStartAdjustedAngle = startAngle + outerStart / outerStartAdjustedRadius;\n const outerEndAdjustedAngle = endAngle - outerEnd / outerEndAdjustedRadius;\n const innerStartAdjustedRadius = innerRadius + innerStart;\n const innerEndAdjustedRadius = innerRadius + innerEnd;\n const innerStartAdjustedAngle = startAngle + innerStart / innerStartAdjustedRadius;\n const innerEndAdjustedAngle = endAngle - innerEnd / innerEndAdjustedRadius;\n ctx.beginPath();\n if (circular) {\n ctx.arc(x, y, outerRadius, outerStartAdjustedAngle, outerEndAdjustedAngle);\n if (outerEnd > 0) {\n const pCenter = rThetaToXY(outerEndAdjustedRadius, outerEndAdjustedAngle, x, y);\n ctx.arc(pCenter.x, pCenter.y, outerEnd, outerEndAdjustedAngle, endAngle + HALF_PI);\n }\n const p4 = rThetaToXY(innerEndAdjustedRadius, endAngle, x, y);\n ctx.lineTo(p4.x, p4.y);\n if (innerEnd > 0) {\n const pCenter = rThetaToXY(innerEndAdjustedRadius, innerEndAdjustedAngle, x, y);\n ctx.arc(pCenter.x, pCenter.y, innerEnd, endAngle + HALF_PI, innerEndAdjustedAngle + Math.PI);\n }\n ctx.arc(x, y, innerRadius, endAngle - (innerEnd / innerRadius), startAngle + (innerStart / innerRadius), true);\n if (innerStart > 0) {\n const pCenter = rThetaToXY(innerStartAdjustedRadius, innerStartAdjustedAngle, x, y);\n ctx.arc(pCenter.x, pCenter.y, innerStart, innerStartAdjustedAngle + Math.PI, startAngle - HALF_PI);\n }\n const p8 = rThetaToXY(outerStartAdjustedRadius, startAngle, x, y);\n ctx.lineTo(p8.x, p8.y);\n if (outerStart > 0) {\n const pCenter = rThetaToXY(outerStartAdjustedRadius, outerStartAdjustedAngle, x, y);\n ctx.arc(pCenter.x, pCenter.y, outerStart, startAngle - HALF_PI, outerStartAdjustedAngle);\n }\n } else {\n ctx.moveTo(x, y);\n const outerStartX = Math.cos(outerStartAdjustedAngle) * outerRadius + x;\n const outerStartY = Math.sin(outerStartAdjustedAngle) * outerRadius + y;\n ctx.lineTo(outerStartX, outerStartY);\n const outerEndX = Math.cos(outerEndAdjustedAngle) * outerRadius + x;\n const outerEndY = Math.sin(outerEndAdjustedAngle) * outerRadius + y;\n ctx.lineTo(outerEndX, outerEndY);\n }\n ctx.closePath();\n}\nfunction drawArc(ctx, element, offset, spacing, circular) {\n const {fullCircles, startAngle, circumference} = element;\n let endAngle = element.endAngle;\n if (fullCircles) {\n pathArc(ctx, element, offset, spacing, startAngle + TAU, circular);\n for (let i = 0; i < fullCircles; ++i) {\n ctx.fill();\n }\n if (!isNaN(circumference)) {\n endAngle = startAngle + circumference % TAU;\n if (circumference % TAU === 0) {\n endAngle += TAU;\n }\n }\n }\n pathArc(ctx, element, offset, spacing, endAngle, circular);\n ctx.fill();\n return endAngle;\n}\nfunction drawFullCircleBorders(ctx, element, inner) {\n const {x, y, startAngle, pixelMargin, fullCircles} = element;\n const outerRadius = Math.max(element.outerRadius - pixelMargin, 0);\n const innerRadius = element.innerRadius + pixelMargin;\n let i;\n if (inner) {\n clipArc(ctx, element, startAngle + TAU);\n }\n ctx.beginPath();\n ctx.arc(x, y, innerRadius, startAngle + TAU, startAngle, true);\n for (i = 0; i < fullCircles; ++i) {\n ctx.stroke();\n }\n ctx.beginPath();\n ctx.arc(x, y, outerRadius, startAngle, startAngle + TAU);\n for (i = 0; i < fullCircles; ++i) {\n ctx.stroke();\n }\n}\nfunction drawBorder(ctx, element, offset, spacing, endAngle, circular) {\n const {options} = element;\n const {borderWidth, borderJoinStyle} = options;\n const inner = options.borderAlign === 'inner';\n if (!borderWidth) {\n return;\n }\n if (inner) {\n ctx.lineWidth = borderWidth * 2;\n ctx.lineJoin = borderJoinStyle || 'round';\n } else {\n ctx.lineWidth = borderWidth;\n ctx.lineJoin = borderJoinStyle || 'bevel';\n }\n if (element.fullCircles) {\n drawFullCircleBorders(ctx, element, inner);\n }\n if (inner) {\n clipArc(ctx, element, endAngle);\n }\n pathArc(ctx, element, offset, spacing, endAngle, circular);\n ctx.stroke();\n}\nclass ArcElement extends Element {\n constructor(cfg) {\n super();\n this.options = undefined;\n this.circumference = undefined;\n this.startAngle = undefined;\n this.endAngle = undefined;\n this.innerRadius = undefined;\n this.outerRadius = undefined;\n this.pixelMargin = 0;\n this.fullCircles = 0;\n if (cfg) {\n Object.assign(this, cfg);\n }\n }\n inRange(chartX, chartY, useFinalPosition) {\n const point = this.getProps(['x', 'y'], useFinalPosition);\n const {angle, distance} = getAngleFromPoint(point, {x: chartX, y: chartY});\n const {startAngle, endAngle, innerRadius, outerRadius, circumference} = this.getProps([\n 'startAngle',\n 'endAngle',\n 'innerRadius',\n 'outerRadius',\n 'circumference'\n ], useFinalPosition);\n const rAdjust = this.options.spacing / 2;\n const _circumference = valueOrDefault(circumference, endAngle - startAngle);\n const betweenAngles = _circumference >= TAU || _angleBetween(angle, startAngle, endAngle);\n const withinRadius = _isBetween(distance, innerRadius + rAdjust, outerRadius + rAdjust);\n return (betweenAngles && withinRadius);\n }\n getCenterPoint(useFinalPosition) {\n const {x, y, startAngle, endAngle, innerRadius, outerRadius} = this.getProps([\n 'x',\n 'y',\n 'startAngle',\n 'endAngle',\n 'innerRadius',\n 'outerRadius',\n 'circumference',\n ], useFinalPosition);\n const {offset, spacing} = this.options;\n const halfAngle = (startAngle + endAngle) / 2;\n const halfRadius = (innerRadius + outerRadius + spacing + offset) / 2;\n return {\n x: x + Math.cos(halfAngle) * halfRadius,\n y: y + Math.sin(halfAngle) * halfRadius\n };\n }\n tooltipPosition(useFinalPosition) {\n return this.getCenterPoint(useFinalPosition);\n }\n draw(ctx) {\n const {options, circumference} = this;\n const offset = (options.offset || 0) / 2;\n const spacing = (options.spacing || 0) / 2;\n const circular = options.circular;\n this.pixelMargin = (options.borderAlign === 'inner') ? 0.33 : 0;\n this.fullCircles = circumference > TAU ? Math.floor(circumference / TAU) : 0;\n if (circumference === 0 || this.innerRadius < 0 || this.outerRadius < 0) {\n return;\n }\n ctx.save();\n let radiusOffset = 0;\n if (offset) {\n radiusOffset = offset / 2;\n const halfAngle = (this.startAngle + this.endAngle) / 2;\n ctx.translate(Math.cos(halfAngle) * radiusOffset, Math.sin(halfAngle) * radiusOffset);\n if (this.circumference >= PI) {\n radiusOffset = offset;\n }\n }\n ctx.fillStyle = options.backgroundColor;\n ctx.strokeStyle = options.borderColor;\n const endAngle = drawArc(ctx, this, radiusOffset, spacing, circular);\n drawBorder(ctx, this, radiusOffset, spacing, endAngle, circular);\n ctx.restore();\n }\n}\nArcElement.id = 'arc';\nArcElement.defaults = {\n borderAlign: 'center',\n borderColor: '#fff',\n borderJoinStyle: undefined,\n borderRadius: 0,\n borderWidth: 2,\n offset: 0,\n spacing: 0,\n angle: undefined,\n circular: true,\n};\nArcElement.defaultRoutes = {\n backgroundColor: 'backgroundColor'\n};\n\nfunction setStyle(ctx, options, style = options) {\n ctx.lineCap = valueOrDefault(style.borderCapStyle, options.borderCapStyle);\n ctx.setLineDash(valueOrDefault(style.borderDash, options.borderDash));\n ctx.lineDashOffset = valueOrDefault(style.borderDashOffset, options.borderDashOffset);\n ctx.lineJoin = valueOrDefault(style.borderJoinStyle, options.borderJoinStyle);\n ctx.lineWidth = valueOrDefault(style.borderWidth, options.borderWidth);\n ctx.strokeStyle = valueOrDefault(style.borderColor, options.borderColor);\n}\nfunction lineTo(ctx, previous, target) {\n ctx.lineTo(target.x, target.y);\n}\nfunction getLineMethod(options) {\n if (options.stepped) {\n return _steppedLineTo;\n }\n if (options.tension || options.cubicInterpolationMode === 'monotone') {\n return _bezierCurveTo;\n }\n return lineTo;\n}\nfunction pathVars(points, segment, params = {}) {\n const count = points.length;\n const {start: paramsStart = 0, end: paramsEnd = count - 1} = params;\n const {start: segmentStart, end: segmentEnd} = segment;\n const start = Math.max(paramsStart, segmentStart);\n const end = Math.min(paramsEnd, segmentEnd);\n const outside = paramsStart < segmentStart && paramsEnd < segmentStart || paramsStart > segmentEnd && paramsEnd > segmentEnd;\n return {\n count,\n start,\n loop: segment.loop,\n ilen: end < start && !outside ? count + end - start : end - start\n };\n}\nfunction pathSegment(ctx, line, segment, params) {\n const {points, options} = line;\n const {count, start, loop, ilen} = pathVars(points, segment, params);\n const lineMethod = getLineMethod(options);\n let {move = true, reverse} = params || {};\n let i, point, prev;\n for (i = 0; i <= ilen; ++i) {\n point = points[(start + (reverse ? ilen - i : i)) % count];\n if (point.skip) {\n continue;\n } else if (move) {\n ctx.moveTo(point.x, point.y);\n move = false;\n } else {\n lineMethod(ctx, prev, point, reverse, options.stepped);\n }\n prev = point;\n }\n if (loop) {\n point = points[(start + (reverse ? ilen : 0)) % count];\n lineMethod(ctx, prev, point, reverse, options.stepped);\n }\n return !!loop;\n}\nfunction fastPathSegment(ctx, line, segment, params) {\n const points = line.points;\n const {count, start, ilen} = pathVars(points, segment, params);\n const {move = true, reverse} = params || {};\n let avgX = 0;\n let countX = 0;\n let i, point, prevX, minY, maxY, lastY;\n const pointIndex = (index) => (start + (reverse ? ilen - index : index)) % count;\n const drawX = () => {\n if (minY !== maxY) {\n ctx.lineTo(avgX, maxY);\n ctx.lineTo(avgX, minY);\n ctx.lineTo(avgX, lastY);\n }\n };\n if (move) {\n point = points[pointIndex(0)];\n ctx.moveTo(point.x, point.y);\n }\n for (i = 0; i <= ilen; ++i) {\n point = points[pointIndex(i)];\n if (point.skip) {\n continue;\n }\n const x = point.x;\n const y = point.y;\n const truncX = x | 0;\n if (truncX === prevX) {\n if (y < minY) {\n minY = y;\n } else if (y > maxY) {\n maxY = y;\n }\n avgX = (countX * avgX + x) / ++countX;\n } else {\n drawX();\n ctx.lineTo(x, y);\n prevX = truncX;\n countX = 0;\n minY = maxY = y;\n }\n lastY = y;\n }\n drawX();\n}\nfunction _getSegmentMethod(line) {\n const opts = line.options;\n const borderDash = opts.borderDash && opts.borderDash.length;\n const useFastPath = !line._decimated && !line._loop && !opts.tension && opts.cubicInterpolationMode !== 'monotone' && !opts.stepped && !borderDash;\n return useFastPath ? fastPathSegment : pathSegment;\n}\nfunction _getInterpolationMethod(options) {\n if (options.stepped) {\n return _steppedInterpolation;\n }\n if (options.tension || options.cubicInterpolationMode === 'monotone') {\n return _bezierInterpolation;\n }\n return _pointInLine;\n}\nfunction strokePathWithCache(ctx, line, start, count) {\n let path = line._path;\n if (!path) {\n path = line._path = new Path2D();\n if (line.path(path, start, count)) {\n path.closePath();\n }\n }\n setStyle(ctx, line.options);\n ctx.stroke(path);\n}\nfunction strokePathDirect(ctx, line, start, count) {\n const {segments, options} = line;\n const segmentMethod = _getSegmentMethod(line);\n for (const segment of segments) {\n setStyle(ctx, options, segment.style);\n ctx.beginPath();\n if (segmentMethod(ctx, line, segment, {start, end: start + count - 1})) {\n ctx.closePath();\n }\n ctx.stroke();\n }\n}\nconst usePath2D = typeof Path2D === 'function';\nfunction draw(ctx, line, start, count) {\n if (usePath2D && !line.options.segment) {\n strokePathWithCache(ctx, line, start, count);\n } else {\n strokePathDirect(ctx, line, start, count);\n }\n}\nclass LineElement extends Element {\n constructor(cfg) {\n super();\n this.animated = true;\n this.options = undefined;\n this._chart = undefined;\n this._loop = undefined;\n this._fullLoop = undefined;\n this._path = undefined;\n this._points = undefined;\n this._segments = undefined;\n this._decimated = false;\n this._pointsUpdated = false;\n this._datasetIndex = undefined;\n if (cfg) {\n Object.assign(this, cfg);\n }\n }\n updateControlPoints(chartArea, indexAxis) {\n const options = this.options;\n if ((options.tension || options.cubicInterpolationMode === 'monotone') && !options.stepped && !this._pointsUpdated) {\n const loop = options.spanGaps ? this._loop : this._fullLoop;\n _updateBezierControlPoints(this._points, options, chartArea, loop, indexAxis);\n this._pointsUpdated = true;\n }\n }\n set points(points) {\n this._points = points;\n delete this._segments;\n delete this._path;\n this._pointsUpdated = false;\n }\n get points() {\n return this._points;\n }\n get segments() {\n return this._segments || (this._segments = _computeSegments(this, this.options.segment));\n }\n first() {\n const segments = this.segments;\n const points = this.points;\n return segments.length && points[segments[0].start];\n }\n last() {\n const segments = this.segments;\n const points = this.points;\n const count = segments.length;\n return count && points[segments[count - 1].end];\n }\n interpolate(point, property) {\n const options = this.options;\n const value = point[property];\n const points = this.points;\n const segments = _boundSegments(this, {property, start: value, end: value});\n if (!segments.length) {\n return;\n }\n const result = [];\n const _interpolate = _getInterpolationMethod(options);\n let i, ilen;\n for (i = 0, ilen = segments.length; i < ilen; ++i) {\n const {start, end} = segments[i];\n const p1 = points[start];\n const p2 = points[end];\n if (p1 === p2) {\n result.push(p1);\n continue;\n }\n const t = Math.abs((value - p1[property]) / (p2[property] - p1[property]));\n const interpolated = _interpolate(p1, p2, t, options.stepped);\n interpolated[property] = point[property];\n result.push(interpolated);\n }\n return result.length === 1 ? result[0] : result;\n }\n pathSegment(ctx, segment, params) {\n const segmentMethod = _getSegmentMethod(this);\n return segmentMethod(ctx, this, segment, params);\n }\n path(ctx, start, count) {\n const segments = this.segments;\n const segmentMethod = _getSegmentMethod(this);\n let loop = this._loop;\n start = start || 0;\n count = count || (this.points.length - start);\n for (const segment of segments) {\n loop &= segmentMethod(ctx, this, segment, {start, end: start + count - 1});\n }\n return !!loop;\n }\n draw(ctx, chartArea, start, count) {\n const options = this.options || {};\n const points = this.points || [];\n if (points.length && options.borderWidth) {\n ctx.save();\n draw(ctx, this, start, count);\n ctx.restore();\n }\n if (this.animated) {\n this._pointsUpdated = false;\n this._path = undefined;\n }\n }\n}\nLineElement.id = 'line';\nLineElement.defaults = {\n borderCapStyle: 'butt',\n borderDash: [],\n borderDashOffset: 0,\n borderJoinStyle: 'miter',\n borderWidth: 3,\n capBezierPoints: true,\n cubicInterpolationMode: 'default',\n fill: false,\n spanGaps: false,\n stepped: false,\n tension: 0,\n};\nLineElement.defaultRoutes = {\n backgroundColor: 'backgroundColor',\n borderColor: 'borderColor'\n};\nLineElement.descriptors = {\n _scriptable: true,\n _indexable: (name) => name !== 'borderDash' && name !== 'fill',\n};\n\nfunction inRange$1(el, pos, axis, useFinalPosition) {\n const options = el.options;\n const {[axis]: value} = el.getProps([axis], useFinalPosition);\n return (Math.abs(pos - value) < options.radius + options.hitRadius);\n}\nclass PointElement extends Element {\n constructor(cfg) {\n super();\n this.options = undefined;\n this.parsed = undefined;\n this.skip = undefined;\n this.stop = undefined;\n if (cfg) {\n Object.assign(this, cfg);\n }\n }\n inRange(mouseX, mouseY, useFinalPosition) {\n const options = this.options;\n const {x, y} = this.getProps(['x', 'y'], useFinalPosition);\n return ((Math.pow(mouseX - x, 2) + Math.pow(mouseY - y, 2)) < Math.pow(options.hitRadius + options.radius, 2));\n }\n inXRange(mouseX, useFinalPosition) {\n return inRange$1(this, mouseX, 'x', useFinalPosition);\n }\n inYRange(mouseY, useFinalPosition) {\n return inRange$1(this, mouseY, 'y', useFinalPosition);\n }\n getCenterPoint(useFinalPosition) {\n const {x, y} = this.getProps(['x', 'y'], useFinalPosition);\n return {x, y};\n }\n size(options) {\n options = options || this.options || {};\n let radius = options.radius || 0;\n radius = Math.max(radius, radius && options.hoverRadius || 0);\n const borderWidth = radius && options.borderWidth || 0;\n return (radius + borderWidth) * 2;\n }\n draw(ctx, area) {\n const options = this.options;\n if (this.skip || options.radius < 0.1 || !_isPointInArea(this, area, this.size(options) / 2)) {\n return;\n }\n ctx.strokeStyle = options.borderColor;\n ctx.lineWidth = options.borderWidth;\n ctx.fillStyle = options.backgroundColor;\n drawPoint(ctx, options, this.x, this.y);\n }\n getRange() {\n const options = this.options || {};\n return options.radius + options.hitRadius;\n }\n}\nPointElement.id = 'point';\nPointElement.defaults = {\n borderWidth: 1,\n hitRadius: 1,\n hoverBorderWidth: 1,\n hoverRadius: 4,\n pointStyle: 'circle',\n radius: 3,\n rotation: 0\n};\nPointElement.defaultRoutes = {\n backgroundColor: 'backgroundColor',\n borderColor: 'borderColor'\n};\n\nfunction getBarBounds(bar, useFinalPosition) {\n const {x, y, base, width, height} = bar.getProps(['x', 'y', 'base', 'width', 'height'], useFinalPosition);\n let left, right, top, bottom, half;\n if (bar.horizontal) {\n half = height / 2;\n left = Math.min(x, base);\n right = Math.max(x, base);\n top = y - half;\n bottom = y + half;\n } else {\n half = width / 2;\n left = x - half;\n right = x + half;\n top = Math.min(y, base);\n bottom = Math.max(y, base);\n }\n return {left, top, right, bottom};\n}\nfunction skipOrLimit(skip, value, min, max) {\n return skip ? 0 : _limitValue(value, min, max);\n}\nfunction parseBorderWidth(bar, maxW, maxH) {\n const value = bar.options.borderWidth;\n const skip = bar.borderSkipped;\n const o = toTRBL(value);\n return {\n t: skipOrLimit(skip.top, o.top, 0, maxH),\n r: skipOrLimit(skip.right, o.right, 0, maxW),\n b: skipOrLimit(skip.bottom, o.bottom, 0, maxH),\n l: skipOrLimit(skip.left, o.left, 0, maxW)\n };\n}\nfunction parseBorderRadius(bar, maxW, maxH) {\n const {enableBorderRadius} = bar.getProps(['enableBorderRadius']);\n const value = bar.options.borderRadius;\n const o = toTRBLCorners(value);\n const maxR = Math.min(maxW, maxH);\n const skip = bar.borderSkipped;\n const enableBorder = enableBorderRadius || isObject(value);\n return {\n topLeft: skipOrLimit(!enableBorder || skip.top || skip.left, o.topLeft, 0, maxR),\n topRight: skipOrLimit(!enableBorder || skip.top || skip.right, o.topRight, 0, maxR),\n bottomLeft: skipOrLimit(!enableBorder || skip.bottom || skip.left, o.bottomLeft, 0, maxR),\n bottomRight: skipOrLimit(!enableBorder || skip.bottom || skip.right, o.bottomRight, 0, maxR)\n };\n}\nfunction boundingRects(bar) {\n const bounds = getBarBounds(bar);\n const width = bounds.right - bounds.left;\n const height = bounds.bottom - bounds.top;\n const border = parseBorderWidth(bar, width / 2, height / 2);\n const radius = parseBorderRadius(bar, width / 2, height / 2);\n return {\n outer: {\n x: bounds.left,\n y: bounds.top,\n w: width,\n h: height,\n radius\n },\n inner: {\n x: bounds.left + border.l,\n y: bounds.top + border.t,\n w: width - border.l - border.r,\n h: height - border.t - border.b,\n radius: {\n topLeft: Math.max(0, radius.topLeft - Math.max(border.t, border.l)),\n topRight: Math.max(0, radius.topRight - Math.max(border.t, border.r)),\n bottomLeft: Math.max(0, radius.bottomLeft - Math.max(border.b, border.l)),\n bottomRight: Math.max(0, radius.bottomRight - Math.max(border.b, border.r)),\n }\n }\n };\n}\nfunction inRange(bar, x, y, useFinalPosition) {\n const skipX = x === null;\n const skipY = y === null;\n const skipBoth = skipX && skipY;\n const bounds = bar && !skipBoth && getBarBounds(bar, useFinalPosition);\n return bounds\n\t\t&& (skipX || _isBetween(x, bounds.left, bounds.right))\n\t\t&& (skipY || _isBetween(y, bounds.top, bounds.bottom));\n}\nfunction hasRadius(radius) {\n return radius.topLeft || radius.topRight || radius.bottomLeft || radius.bottomRight;\n}\nfunction addNormalRectPath(ctx, rect) {\n ctx.rect(rect.x, rect.y, rect.w, rect.h);\n}\nfunction inflateRect(rect, amount, refRect = {}) {\n const x = rect.x !== refRect.x ? -amount : 0;\n const y = rect.y !== refRect.y ? -amount : 0;\n const w = (rect.x + rect.w !== refRect.x + refRect.w ? amount : 0) - x;\n const h = (rect.y + rect.h !== refRect.y + refRect.h ? amount : 0) - y;\n return {\n x: rect.x + x,\n y: rect.y + y,\n w: rect.w + w,\n h: rect.h + h,\n radius: rect.radius\n };\n}\nclass BarElement extends Element {\n constructor(cfg) {\n super();\n this.options = undefined;\n this.horizontal = undefined;\n this.base = undefined;\n this.width = undefined;\n this.height = undefined;\n this.inflateAmount = undefined;\n if (cfg) {\n Object.assign(this, cfg);\n }\n }\n draw(ctx) {\n const {inflateAmount, options: {borderColor, backgroundColor}} = this;\n const {inner, outer} = boundingRects(this);\n const addRectPath = hasRadius(outer.radius) ? addRoundedRectPath : addNormalRectPath;\n ctx.save();\n if (outer.w !== inner.w || outer.h !== inner.h) {\n ctx.beginPath();\n addRectPath(ctx, inflateRect(outer, inflateAmount, inner));\n ctx.clip();\n addRectPath(ctx, inflateRect(inner, -inflateAmount, outer));\n ctx.fillStyle = borderColor;\n ctx.fill('evenodd');\n }\n ctx.beginPath();\n addRectPath(ctx, inflateRect(inner, inflateAmount));\n ctx.fillStyle = backgroundColor;\n ctx.fill();\n ctx.restore();\n }\n inRange(mouseX, mouseY, useFinalPosition) {\n return inRange(this, mouseX, mouseY, useFinalPosition);\n }\n inXRange(mouseX, useFinalPosition) {\n return inRange(this, mouseX, null, useFinalPosition);\n }\n inYRange(mouseY, useFinalPosition) {\n return inRange(this, null, mouseY, useFinalPosition);\n }\n getCenterPoint(useFinalPosition) {\n const {x, y, base, horizontal} = this.getProps(['x', 'y', 'base', 'horizontal'], useFinalPosition);\n return {\n x: horizontal ? (x + base) / 2 : x,\n y: horizontal ? y : (y + base) / 2\n };\n }\n getRange(axis) {\n return axis === 'x' ? this.width / 2 : this.height / 2;\n }\n}\nBarElement.id = 'bar';\nBarElement.defaults = {\n borderSkipped: 'start',\n borderWidth: 0,\n borderRadius: 0,\n inflateAmount: 'auto',\n pointStyle: undefined\n};\nBarElement.defaultRoutes = {\n backgroundColor: 'backgroundColor',\n borderColor: 'borderColor'\n};\n\nvar elements = /*#__PURE__*/Object.freeze({\n__proto__: null,\nArcElement: ArcElement,\nLineElement: LineElement,\nPointElement: PointElement,\nBarElement: BarElement\n});\n\nfunction lttbDecimation(data, start, count, availableWidth, options) {\n const samples = options.samples || availableWidth;\n if (samples >= count) {\n return data.slice(start, start + count);\n }\n const decimated = [];\n const bucketWidth = (count - 2) / (samples - 2);\n let sampledIndex = 0;\n const endIndex = start + count - 1;\n let a = start;\n let i, maxAreaPoint, maxArea, area, nextA;\n decimated[sampledIndex++] = data[a];\n for (i = 0; i < samples - 2; i++) {\n let avgX = 0;\n let avgY = 0;\n let j;\n const avgRangeStart = Math.floor((i + 1) * bucketWidth) + 1 + start;\n const avgRangeEnd = Math.min(Math.floor((i + 2) * bucketWidth) + 1, count) + start;\n const avgRangeLength = avgRangeEnd - avgRangeStart;\n for (j = avgRangeStart; j < avgRangeEnd; j++) {\n avgX += data[j].x;\n avgY += data[j].y;\n }\n avgX /= avgRangeLength;\n avgY /= avgRangeLength;\n const rangeOffs = Math.floor(i * bucketWidth) + 1 + start;\n const rangeTo = Math.min(Math.floor((i + 1) * bucketWidth) + 1, count) + start;\n const {x: pointAx, y: pointAy} = data[a];\n maxArea = area = -1;\n for (j = rangeOffs; j < rangeTo; j++) {\n area = 0.5 * Math.abs(\n (pointAx - avgX) * (data[j].y - pointAy) -\n (pointAx - data[j].x) * (avgY - pointAy)\n );\n if (area > maxArea) {\n maxArea = area;\n maxAreaPoint = data[j];\n nextA = j;\n }\n }\n decimated[sampledIndex++] = maxAreaPoint;\n a = nextA;\n }\n decimated[sampledIndex++] = data[endIndex];\n return decimated;\n}\nfunction minMaxDecimation(data, start, count, availableWidth) {\n let avgX = 0;\n let countX = 0;\n let i, point, x, y, prevX, minIndex, maxIndex, startIndex, minY, maxY;\n const decimated = [];\n const endIndex = start + count - 1;\n const xMin = data[start].x;\n const xMax = data[endIndex].x;\n const dx = xMax - xMin;\n for (i = start; i < start + count; ++i) {\n point = data[i];\n x = (point.x - xMin) / dx * availableWidth;\n y = point.y;\n const truncX = x | 0;\n if (truncX === prevX) {\n if (y < minY) {\n minY = y;\n minIndex = i;\n } else if (y > maxY) {\n maxY = y;\n maxIndex = i;\n }\n avgX = (countX * avgX + point.x) / ++countX;\n } else {\n const lastIndex = i - 1;\n if (!isNullOrUndef(minIndex) && !isNullOrUndef(maxIndex)) {\n const intermediateIndex1 = Math.min(minIndex, maxIndex);\n const intermediateIndex2 = Math.max(minIndex, maxIndex);\n if (intermediateIndex1 !== startIndex && intermediateIndex1 !== lastIndex) {\n decimated.push({\n ...data[intermediateIndex1],\n x: avgX,\n });\n }\n if (intermediateIndex2 !== startIndex && intermediateIndex2 !== lastIndex) {\n decimated.push({\n ...data[intermediateIndex2],\n x: avgX\n });\n }\n }\n if (i > 0 && lastIndex !== startIndex) {\n decimated.push(data[lastIndex]);\n }\n decimated.push(point);\n prevX = truncX;\n countX = 0;\n minY = maxY = y;\n minIndex = maxIndex = startIndex = i;\n }\n }\n return decimated;\n}\nfunction cleanDecimatedDataset(dataset) {\n if (dataset._decimated) {\n const data = dataset._data;\n delete dataset._decimated;\n delete dataset._data;\n Object.defineProperty(dataset, 'data', {value: data});\n }\n}\nfunction cleanDecimatedData(chart) {\n chart.data.datasets.forEach((dataset) => {\n cleanDecimatedDataset(dataset);\n });\n}\nfunction getStartAndCountOfVisiblePointsSimplified(meta, points) {\n const pointCount = points.length;\n let start = 0;\n let count;\n const {iScale} = meta;\n const {min, max, minDefined, maxDefined} = iScale.getUserBounds();\n if (minDefined) {\n start = _limitValue(_lookupByKey(points, iScale.axis, min).lo, 0, pointCount - 1);\n }\n if (maxDefined) {\n count = _limitValue(_lookupByKey(points, iScale.axis, max).hi + 1, start, pointCount) - start;\n } else {\n count = pointCount - start;\n }\n return {start, count};\n}\nvar plugin_decimation = {\n id: 'decimation',\n defaults: {\n algorithm: 'min-max',\n enabled: false,\n },\n beforeElementsUpdate: (chart, args, options) => {\n if (!options.enabled) {\n cleanDecimatedData(chart);\n return;\n }\n const availableWidth = chart.width;\n chart.data.datasets.forEach((dataset, datasetIndex) => {\n const {_data, indexAxis} = dataset;\n const meta = chart.getDatasetMeta(datasetIndex);\n const data = _data || dataset.data;\n if (resolve([indexAxis, chart.options.indexAxis]) === 'y') {\n return;\n }\n if (!meta.controller.supportsDecimation) {\n return;\n }\n const xAxis = chart.scales[meta.xAxisID];\n if (xAxis.type !== 'linear' && xAxis.type !== 'time') {\n return;\n }\n if (chart.options.parsing) {\n return;\n }\n let {start, count} = getStartAndCountOfVisiblePointsSimplified(meta, data);\n const threshold = options.threshold || 4 * availableWidth;\n if (count <= threshold) {\n cleanDecimatedDataset(dataset);\n return;\n }\n if (isNullOrUndef(_data)) {\n dataset._data = data;\n delete dataset.data;\n Object.defineProperty(dataset, 'data', {\n configurable: true,\n enumerable: true,\n get: function() {\n return this._decimated;\n },\n set: function(d) {\n this._data = d;\n }\n });\n }\n let decimated;\n switch (options.algorithm) {\n case 'lttb':\n decimated = lttbDecimation(data, start, count, availableWidth, options);\n break;\n case 'min-max':\n decimated = minMaxDecimation(data, start, count, availableWidth);\n break;\n default:\n throw new Error(`Unsupported decimation algorithm '${options.algorithm}'`);\n }\n dataset._decimated = decimated;\n });\n },\n destroy(chart) {\n cleanDecimatedData(chart);\n }\n};\n\nfunction _segments(line, target, property) {\n const segments = line.segments;\n const points = line.points;\n const tpoints = target.points;\n const parts = [];\n for (const segment of segments) {\n let {start, end} = segment;\n end = _findSegmentEnd(start, end, points);\n const bounds = _getBounds(property, points[start], points[end], segment.loop);\n if (!target.segments) {\n parts.push({\n source: segment,\n target: bounds,\n start: points[start],\n end: points[end]\n });\n continue;\n }\n const targetSegments = _boundSegments(target, bounds);\n for (const tgt of targetSegments) {\n const subBounds = _getBounds(property, tpoints[tgt.start], tpoints[tgt.end], tgt.loop);\n const fillSources = _boundSegment(segment, points, subBounds);\n for (const fillSource of fillSources) {\n parts.push({\n source: fillSource,\n target: tgt,\n start: {\n [property]: _getEdge(bounds, subBounds, 'start', Math.max)\n },\n end: {\n [property]: _getEdge(bounds, subBounds, 'end', Math.min)\n }\n });\n }\n }\n }\n return parts;\n}\nfunction _getBounds(property, first, last, loop) {\n if (loop) {\n return;\n }\n let start = first[property];\n let end = last[property];\n if (property === 'angle') {\n start = _normalizeAngle(start);\n end = _normalizeAngle(end);\n }\n return {property, start, end};\n}\nfunction _pointsFromSegments(boundary, line) {\n const {x = null, y = null} = boundary || {};\n const linePoints = line.points;\n const points = [];\n line.segments.forEach(({start, end}) => {\n end = _findSegmentEnd(start, end, linePoints);\n const first = linePoints[start];\n const last = linePoints[end];\n if (y !== null) {\n points.push({x: first.x, y});\n points.push({x: last.x, y});\n } else if (x !== null) {\n points.push({x, y: first.y});\n points.push({x, y: last.y});\n }\n });\n return points;\n}\nfunction _findSegmentEnd(start, end, points) {\n for (;end > start; end--) {\n const point = points[end];\n if (!isNaN(point.x) && !isNaN(point.y)) {\n break;\n }\n }\n return end;\n}\nfunction _getEdge(a, b, prop, fn) {\n if (a && b) {\n return fn(a[prop], b[prop]);\n }\n return a ? a[prop] : b ? b[prop] : 0;\n}\n\nfunction _createBoundaryLine(boundary, line) {\n let points = [];\n let _loop = false;\n if (isArray(boundary)) {\n _loop = true;\n points = boundary;\n } else {\n points = _pointsFromSegments(boundary, line);\n }\n return points.length ? new LineElement({\n points,\n options: {tension: 0},\n _loop,\n _fullLoop: _loop\n }) : null;\n}\nfunction _shouldApplyFill(source) {\n return source && source.fill !== false;\n}\n\nfunction _resolveTarget(sources, index, propagate) {\n const source = sources[index];\n let fill = source.fill;\n const visited = [index];\n let target;\n if (!propagate) {\n return fill;\n }\n while (fill !== false && visited.indexOf(fill) === -1) {\n if (!isNumberFinite(fill)) {\n return fill;\n }\n target = sources[fill];\n if (!target) {\n return false;\n }\n if (target.visible) {\n return fill;\n }\n visited.push(fill);\n fill = target.fill;\n }\n return false;\n}\nfunction _decodeFill(line, index, count) {\n const fill = parseFillOption(line);\n if (isObject(fill)) {\n return isNaN(fill.value) ? false : fill;\n }\n let target = parseFloat(fill);\n if (isNumberFinite(target) && Math.floor(target) === target) {\n return decodeTargetIndex(fill[0], index, target, count);\n }\n return ['origin', 'start', 'end', 'stack', 'shape'].indexOf(fill) >= 0 && fill;\n}\nfunction decodeTargetIndex(firstCh, index, target, count) {\n if (firstCh === '-' || firstCh === '+') {\n target = index + target;\n }\n if (target === index || target < 0 || target >= count) {\n return false;\n }\n return target;\n}\nfunction _getTargetPixel(fill, scale) {\n let pixel = null;\n if (fill === 'start') {\n pixel = scale.bottom;\n } else if (fill === 'end') {\n pixel = scale.top;\n } else if (isObject(fill)) {\n pixel = scale.getPixelForValue(fill.value);\n } else if (scale.getBasePixel) {\n pixel = scale.getBasePixel();\n }\n return pixel;\n}\nfunction _getTargetValue(fill, scale, startValue) {\n let value;\n if (fill === 'start') {\n value = startValue;\n } else if (fill === 'end') {\n value = scale.options.reverse ? scale.min : scale.max;\n } else if (isObject(fill)) {\n value = fill.value;\n } else {\n value = scale.getBaseValue();\n }\n return value;\n}\nfunction parseFillOption(line) {\n const options = line.options;\n const fillOption = options.fill;\n let fill = valueOrDefault(fillOption && fillOption.target, fillOption);\n if (fill === undefined) {\n fill = !!options.backgroundColor;\n }\n if (fill === false || fill === null) {\n return false;\n }\n if (fill === true) {\n return 'origin';\n }\n return fill;\n}\n\nfunction _buildStackLine(source) {\n const {scale, index, line} = source;\n const points = [];\n const segments = line.segments;\n const sourcePoints = line.points;\n const linesBelow = getLinesBelow(scale, index);\n linesBelow.push(_createBoundaryLine({x: null, y: scale.bottom}, line));\n for (let i = 0; i < segments.length; i++) {\n const segment = segments[i];\n for (let j = segment.start; j <= segment.end; j++) {\n addPointsBelow(points, sourcePoints[j], linesBelow);\n }\n }\n return new LineElement({points, options: {}});\n}\nfunction getLinesBelow(scale, index) {\n const below = [];\n const metas = scale.getMatchingVisibleMetas('line');\n for (let i = 0; i < metas.length; i++) {\n const meta = metas[i];\n if (meta.index === index) {\n break;\n }\n if (!meta.hidden) {\n below.unshift(meta.dataset);\n }\n }\n return below;\n}\nfunction addPointsBelow(points, sourcePoint, linesBelow) {\n const postponed = [];\n for (let j = 0; j < linesBelow.length; j++) {\n const line = linesBelow[j];\n const {first, last, point} = findPoint(line, sourcePoint, 'x');\n if (!point || (first && last)) {\n continue;\n }\n if (first) {\n postponed.unshift(point);\n } else {\n points.push(point);\n if (!last) {\n break;\n }\n }\n }\n points.push(...postponed);\n}\nfunction findPoint(line, sourcePoint, property) {\n const point = line.interpolate(sourcePoint, property);\n if (!point) {\n return {};\n }\n const pointValue = point[property];\n const segments = line.segments;\n const linePoints = line.points;\n let first = false;\n let last = false;\n for (let i = 0; i < segments.length; i++) {\n const segment = segments[i];\n const firstValue = linePoints[segment.start][property];\n const lastValue = linePoints[segment.end][property];\n if (_isBetween(pointValue, firstValue, lastValue)) {\n first = pointValue === firstValue;\n last = pointValue === lastValue;\n break;\n }\n }\n return {first, last, point};\n}\n\nclass simpleArc {\n constructor(opts) {\n this.x = opts.x;\n this.y = opts.y;\n this.radius = opts.radius;\n }\n pathSegment(ctx, bounds, opts) {\n const {x, y, radius} = this;\n bounds = bounds || {start: 0, end: TAU};\n ctx.arc(x, y, radius, bounds.end, bounds.start, true);\n return !opts.bounds;\n }\n interpolate(point) {\n const {x, y, radius} = this;\n const angle = point.angle;\n return {\n x: x + Math.cos(angle) * radius,\n y: y + Math.sin(angle) * radius,\n angle\n };\n }\n}\n\nfunction _getTarget(source) {\n const {chart, fill, line} = source;\n if (isNumberFinite(fill)) {\n return getLineByIndex(chart, fill);\n }\n if (fill === 'stack') {\n return _buildStackLine(source);\n }\n if (fill === 'shape') {\n return true;\n }\n const boundary = computeBoundary(source);\n if (boundary instanceof simpleArc) {\n return boundary;\n }\n return _createBoundaryLine(boundary, line);\n}\nfunction getLineByIndex(chart, index) {\n const meta = chart.getDatasetMeta(index);\n const visible = meta && chart.isDatasetVisible(index);\n return visible ? meta.dataset : null;\n}\nfunction computeBoundary(source) {\n const scale = source.scale || {};\n if (scale.getPointPositionForValue) {\n return computeCircularBoundary(source);\n }\n return computeLinearBoundary(source);\n}\nfunction computeLinearBoundary(source) {\n const {scale = {}, fill} = source;\n const pixel = _getTargetPixel(fill, scale);\n if (isNumberFinite(pixel)) {\n const horizontal = scale.isHorizontal();\n return {\n x: horizontal ? pixel : null,\n y: horizontal ? null : pixel\n };\n }\n return null;\n}\nfunction computeCircularBoundary(source) {\n const {scale, fill} = source;\n const options = scale.options;\n const length = scale.getLabels().length;\n const start = options.reverse ? scale.max : scale.min;\n const value = _getTargetValue(fill, scale, start);\n const target = [];\n if (options.grid.circular) {\n const center = scale.getPointPositionForValue(0, start);\n return new simpleArc({\n x: center.x,\n y: center.y,\n radius: scale.getDistanceFromCenterForValue(value)\n });\n }\n for (let i = 0; i < length; ++i) {\n target.push(scale.getPointPositionForValue(i, value));\n }\n return target;\n}\n\nfunction _drawfill(ctx, source, area) {\n const target = _getTarget(source);\n const {line, scale, axis} = source;\n const lineOpts = line.options;\n const fillOption = lineOpts.fill;\n const color = lineOpts.backgroundColor;\n const {above = color, below = color} = fillOption || {};\n if (target && line.points.length) {\n clipArea(ctx, area);\n doFill(ctx, {line, target, above, below, area, scale, axis});\n unclipArea(ctx);\n }\n}\nfunction doFill(ctx, cfg) {\n const {line, target, above, below, area, scale} = cfg;\n const property = line._loop ? 'angle' : cfg.axis;\n ctx.save();\n if (property === 'x' && below !== above) {\n clipVertical(ctx, target, area.top);\n fill(ctx, {line, target, color: above, scale, property});\n ctx.restore();\n ctx.save();\n clipVertical(ctx, target, area.bottom);\n }\n fill(ctx, {line, target, color: below, scale, property});\n ctx.restore();\n}\nfunction clipVertical(ctx, target, clipY) {\n const {segments, points} = target;\n let first = true;\n let lineLoop = false;\n ctx.beginPath();\n for (const segment of segments) {\n const {start, end} = segment;\n const firstPoint = points[start];\n const lastPoint = points[_findSegmentEnd(start, end, points)];\n if (first) {\n ctx.moveTo(firstPoint.x, firstPoint.y);\n first = false;\n } else {\n ctx.lineTo(firstPoint.x, clipY);\n ctx.lineTo(firstPoint.x, firstPoint.y);\n }\n lineLoop = !!target.pathSegment(ctx, segment, {move: lineLoop});\n if (lineLoop) {\n ctx.closePath();\n } else {\n ctx.lineTo(lastPoint.x, clipY);\n }\n }\n ctx.lineTo(target.first().x, clipY);\n ctx.closePath();\n ctx.clip();\n}\nfunction fill(ctx, cfg) {\n const {line, target, property, color, scale} = cfg;\n const segments = _segments(line, target, property);\n for (const {source: src, target: tgt, start, end} of segments) {\n const {style: {backgroundColor = color} = {}} = src;\n const notShape = target !== true;\n ctx.save();\n ctx.fillStyle = backgroundColor;\n clipBounds(ctx, scale, notShape && _getBounds(property, start, end));\n ctx.beginPath();\n const lineLoop = !!line.pathSegment(ctx, src);\n let loop;\n if (notShape) {\n if (lineLoop) {\n ctx.closePath();\n } else {\n interpolatedLineTo(ctx, target, end, property);\n }\n const targetLoop = !!target.pathSegment(ctx, tgt, {move: lineLoop, reverse: true});\n loop = lineLoop && targetLoop;\n if (!loop) {\n interpolatedLineTo(ctx, target, start, property);\n }\n }\n ctx.closePath();\n ctx.fill(loop ? 'evenodd' : 'nonzero');\n ctx.restore();\n }\n}\nfunction clipBounds(ctx, scale, bounds) {\n const {top, bottom} = scale.chart.chartArea;\n const {property, start, end} = bounds || {};\n if (property === 'x') {\n ctx.beginPath();\n ctx.rect(start, top, end - start, bottom - top);\n ctx.clip();\n }\n}\nfunction interpolatedLineTo(ctx, target, point, property) {\n const interpolatedPoint = target.interpolate(point, property);\n if (interpolatedPoint) {\n ctx.lineTo(interpolatedPoint.x, interpolatedPoint.y);\n }\n}\n\nvar index = {\n id: 'filler',\n afterDatasetsUpdate(chart, _args, options) {\n const count = (chart.data.datasets || []).length;\n const sources = [];\n let meta, i, line, source;\n for (i = 0; i < count; ++i) {\n meta = chart.getDatasetMeta(i);\n line = meta.dataset;\n source = null;\n if (line && line.options && line instanceof LineElement) {\n source = {\n visible: chart.isDatasetVisible(i),\n index: i,\n fill: _decodeFill(line, i, count),\n chart,\n axis: meta.controller.options.indexAxis,\n scale: meta.vScale,\n line,\n };\n }\n meta.$filler = source;\n sources.push(source);\n }\n for (i = 0; i < count; ++i) {\n source = sources[i];\n if (!source || source.fill === false) {\n continue;\n }\n source.fill = _resolveTarget(sources, i, options.propagate);\n }\n },\n beforeDraw(chart, _args, options) {\n const draw = options.drawTime === 'beforeDraw';\n const metasets = chart.getSortedVisibleDatasetMetas();\n const area = chart.chartArea;\n for (let i = metasets.length - 1; i >= 0; --i) {\n const source = metasets[i].$filler;\n if (!source) {\n continue;\n }\n source.line.updateControlPoints(area, source.axis);\n if (draw && source.fill) {\n _drawfill(chart.ctx, source, area);\n }\n }\n },\n beforeDatasetsDraw(chart, _args, options) {\n if (options.drawTime !== 'beforeDatasetsDraw') {\n return;\n }\n const metasets = chart.getSortedVisibleDatasetMetas();\n for (let i = metasets.length - 1; i >= 0; --i) {\n const source = metasets[i].$filler;\n if (_shouldApplyFill(source)) {\n _drawfill(chart.ctx, source, chart.chartArea);\n }\n }\n },\n beforeDatasetDraw(chart, args, options) {\n const source = args.meta.$filler;\n if (!_shouldApplyFill(source) || options.drawTime !== 'beforeDatasetDraw') {\n return;\n }\n _drawfill(chart.ctx, source, chart.chartArea);\n },\n defaults: {\n propagate: true,\n drawTime: 'beforeDatasetDraw'\n }\n};\n\nconst getBoxSize = (labelOpts, fontSize) => {\n let {boxHeight = fontSize, boxWidth = fontSize} = labelOpts;\n if (labelOpts.usePointStyle) {\n boxHeight = Math.min(boxHeight, fontSize);\n boxWidth = labelOpts.pointStyleWidth || Math.min(boxWidth, fontSize);\n }\n return {\n boxWidth,\n boxHeight,\n itemHeight: Math.max(fontSize, boxHeight)\n };\n};\nconst itemsEqual = (a, b) => a !== null && b !== null && a.datasetIndex === b.datasetIndex && a.index === b.index;\nclass Legend extends Element {\n constructor(config) {\n super();\n this._added = false;\n this.legendHitBoxes = [];\n this._hoveredItem = null;\n this.doughnutMode = false;\n this.chart = config.chart;\n this.options = config.options;\n this.ctx = config.ctx;\n this.legendItems = undefined;\n this.columnSizes = undefined;\n this.lineWidths = undefined;\n this.maxHeight = undefined;\n this.maxWidth = undefined;\n this.top = undefined;\n this.bottom = undefined;\n this.left = undefined;\n this.right = undefined;\n this.height = undefined;\n this.width = undefined;\n this._margins = undefined;\n this.position = undefined;\n this.weight = undefined;\n this.fullSize = undefined;\n }\n update(maxWidth, maxHeight, margins) {\n this.maxWidth = maxWidth;\n this.maxHeight = maxHeight;\n this._margins = margins;\n this.setDimensions();\n this.buildLabels();\n this.fit();\n }\n setDimensions() {\n if (this.isHorizontal()) {\n this.width = this.maxWidth;\n this.left = this._margins.left;\n this.right = this.width;\n } else {\n this.height = this.maxHeight;\n this.top = this._margins.top;\n this.bottom = this.height;\n }\n }\n buildLabels() {\n const labelOpts = this.options.labels || {};\n let legendItems = callback(labelOpts.generateLabels, [this.chart], this) || [];\n if (labelOpts.filter) {\n legendItems = legendItems.filter((item) => labelOpts.filter(item, this.chart.data));\n }\n if (labelOpts.sort) {\n legendItems = legendItems.sort((a, b) => labelOpts.sort(a, b, this.chart.data));\n }\n if (this.options.reverse) {\n legendItems.reverse();\n }\n this.legendItems = legendItems;\n }\n fit() {\n const {options, ctx} = this;\n if (!options.display) {\n this.width = this.height = 0;\n return;\n }\n const labelOpts = options.labels;\n const labelFont = toFont(labelOpts.font);\n const fontSize = labelFont.size;\n const titleHeight = this._computeTitleHeight();\n const {boxWidth, itemHeight} = getBoxSize(labelOpts, fontSize);\n let width, height;\n ctx.font = labelFont.string;\n if (this.isHorizontal()) {\n width = this.maxWidth;\n height = this._fitRows(titleHeight, fontSize, boxWidth, itemHeight) + 10;\n } else {\n height = this.maxHeight;\n width = this._fitCols(titleHeight, fontSize, boxWidth, itemHeight) + 10;\n }\n this.width = Math.min(width, options.maxWidth || this.maxWidth);\n this.height = Math.min(height, options.maxHeight || this.maxHeight);\n }\n _fitRows(titleHeight, fontSize, boxWidth, itemHeight) {\n const {ctx, maxWidth, options: {labels: {padding}}} = this;\n const hitboxes = this.legendHitBoxes = [];\n const lineWidths = this.lineWidths = [0];\n const lineHeight = itemHeight + padding;\n let totalHeight = titleHeight;\n ctx.textAlign = 'left';\n ctx.textBaseline = 'middle';\n let row = -1;\n let top = -lineHeight;\n this.legendItems.forEach((legendItem, i) => {\n const itemWidth = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width;\n if (i === 0 || lineWidths[lineWidths.length - 1] + itemWidth + 2 * padding > maxWidth) {\n totalHeight += lineHeight;\n lineWidths[lineWidths.length - (i > 0 ? 0 : 1)] = 0;\n top += lineHeight;\n row++;\n }\n hitboxes[i] = {left: 0, top, row, width: itemWidth, height: itemHeight};\n lineWidths[lineWidths.length - 1] += itemWidth + padding;\n });\n return totalHeight;\n }\n _fitCols(titleHeight, fontSize, boxWidth, itemHeight) {\n const {ctx, maxHeight, options: {labels: {padding}}} = this;\n const hitboxes = this.legendHitBoxes = [];\n const columnSizes = this.columnSizes = [];\n const heightLimit = maxHeight - titleHeight;\n let totalWidth = padding;\n let currentColWidth = 0;\n let currentColHeight = 0;\n let left = 0;\n let col = 0;\n this.legendItems.forEach((legendItem, i) => {\n const itemWidth = boxWidth + (fontSize / 2) + ctx.measureText(legendItem.text).width;\n if (i > 0 && currentColHeight + itemHeight + 2 * padding > heightLimit) {\n totalWidth += currentColWidth + padding;\n columnSizes.push({width: currentColWidth, height: currentColHeight});\n left += currentColWidth + padding;\n col++;\n currentColWidth = currentColHeight = 0;\n }\n hitboxes[i] = {left, top: currentColHeight, col, width: itemWidth, height: itemHeight};\n currentColWidth = Math.max(currentColWidth, itemWidth);\n currentColHeight += itemHeight + padding;\n });\n totalWidth += currentColWidth;\n columnSizes.push({width: currentColWidth, height: currentColHeight});\n return totalWidth;\n }\n adjustHitBoxes() {\n if (!this.options.display) {\n return;\n }\n const titleHeight = this._computeTitleHeight();\n const {legendHitBoxes: hitboxes, options: {align, labels: {padding}, rtl}} = this;\n const rtlHelper = getRtlAdapter(rtl, this.left, this.width);\n if (this.isHorizontal()) {\n let row = 0;\n let left = _alignStartEnd(align, this.left + padding, this.right - this.lineWidths[row]);\n for (const hitbox of hitboxes) {\n if (row !== hitbox.row) {\n row = hitbox.row;\n left = _alignStartEnd(align, this.left + padding, this.right - this.lineWidths[row]);\n }\n hitbox.top += this.top + titleHeight + padding;\n hitbox.left = rtlHelper.leftForLtr(rtlHelper.x(left), hitbox.width);\n left += hitbox.width + padding;\n }\n } else {\n let col = 0;\n let top = _alignStartEnd(align, this.top + titleHeight + padding, this.bottom - this.columnSizes[col].height);\n for (const hitbox of hitboxes) {\n if (hitbox.col !== col) {\n col = hitbox.col;\n top = _alignStartEnd(align, this.top + titleHeight + padding, this.bottom - this.columnSizes[col].height);\n }\n hitbox.top = top;\n hitbox.left += this.left + padding;\n hitbox.left = rtlHelper.leftForLtr(rtlHelper.x(hitbox.left), hitbox.width);\n top += hitbox.height + padding;\n }\n }\n }\n isHorizontal() {\n return this.options.position === 'top' || this.options.position === 'bottom';\n }\n draw() {\n if (this.options.display) {\n const ctx = this.ctx;\n clipArea(ctx, this);\n this._draw();\n unclipArea(ctx);\n }\n }\n _draw() {\n const {options: opts, columnSizes, lineWidths, ctx} = this;\n const {align, labels: labelOpts} = opts;\n const defaultColor = defaults.color;\n const rtlHelper = getRtlAdapter(opts.rtl, this.left, this.width);\n const labelFont = toFont(labelOpts.font);\n const {color: fontColor, padding} = labelOpts;\n const fontSize = labelFont.size;\n const halfFontSize = fontSize / 2;\n let cursor;\n this.drawTitle();\n ctx.textAlign = rtlHelper.textAlign('left');\n ctx.textBaseline = 'middle';\n ctx.lineWidth = 0.5;\n ctx.font = labelFont.string;\n const {boxWidth, boxHeight, itemHeight} = getBoxSize(labelOpts, fontSize);\n const drawLegendBox = function(x, y, legendItem) {\n if (isNaN(boxWidth) || boxWidth <= 0 || isNaN(boxHeight) || boxHeight < 0) {\n return;\n }\n ctx.save();\n const lineWidth = valueOrDefault(legendItem.lineWidth, 1);\n ctx.fillStyle = valueOrDefault(legendItem.fillStyle, defaultColor);\n ctx.lineCap = valueOrDefault(legendItem.lineCap, 'butt');\n ctx.lineDashOffset = valueOrDefault(legendItem.lineDashOffset, 0);\n ctx.lineJoin = valueOrDefault(legendItem.lineJoin, 'miter');\n ctx.lineWidth = lineWidth;\n ctx.strokeStyle = valueOrDefault(legendItem.strokeStyle, defaultColor);\n ctx.setLineDash(valueOrDefault(legendItem.lineDash, []));\n if (labelOpts.usePointStyle) {\n const drawOptions = {\n radius: boxHeight * Math.SQRT2 / 2,\n pointStyle: legendItem.pointStyle,\n rotation: legendItem.rotation,\n borderWidth: lineWidth\n };\n const centerX = rtlHelper.xPlus(x, boxWidth / 2);\n const centerY = y + halfFontSize;\n drawPointLegend(ctx, drawOptions, centerX, centerY, labelOpts.pointStyleWidth && boxWidth);\n } else {\n const yBoxTop = y + Math.max((fontSize - boxHeight) / 2, 0);\n const xBoxLeft = rtlHelper.leftForLtr(x, boxWidth);\n const borderRadius = toTRBLCorners(legendItem.borderRadius);\n ctx.beginPath();\n if (Object.values(borderRadius).some(v => v !== 0)) {\n addRoundedRectPath(ctx, {\n x: xBoxLeft,\n y: yBoxTop,\n w: boxWidth,\n h: boxHeight,\n radius: borderRadius,\n });\n } else {\n ctx.rect(xBoxLeft, yBoxTop, boxWidth, boxHeight);\n }\n ctx.fill();\n if (lineWidth !== 0) {\n ctx.stroke();\n }\n }\n ctx.restore();\n };\n const fillText = function(x, y, legendItem) {\n renderText(ctx, legendItem.text, x, y + (itemHeight / 2), labelFont, {\n strikethrough: legendItem.hidden,\n textAlign: rtlHelper.textAlign(legendItem.textAlign)\n });\n };\n const isHorizontal = this.isHorizontal();\n const titleHeight = this._computeTitleHeight();\n if (isHorizontal) {\n cursor = {\n x: _alignStartEnd(align, this.left + padding, this.right - lineWidths[0]),\n y: this.top + padding + titleHeight,\n line: 0\n };\n } else {\n cursor = {\n x: this.left + padding,\n y: _alignStartEnd(align, this.top + titleHeight + padding, this.bottom - columnSizes[0].height),\n line: 0\n };\n }\n overrideTextDirection(this.ctx, opts.textDirection);\n const lineHeight = itemHeight + padding;\n this.legendItems.forEach((legendItem, i) => {\n ctx.strokeStyle = legendItem.fontColor || fontColor;\n ctx.fillStyle = legendItem.fontColor || fontColor;\n const textWidth = ctx.measureText(legendItem.text).width;\n const textAlign = rtlHelper.textAlign(legendItem.textAlign || (legendItem.textAlign = labelOpts.textAlign));\n const width = boxWidth + halfFontSize + textWidth;\n let x = cursor.x;\n let y = cursor.y;\n rtlHelper.setWidth(this.width);\n if (isHorizontal) {\n if (i > 0 && x + width + padding > this.right) {\n y = cursor.y += lineHeight;\n cursor.line++;\n x = cursor.x = _alignStartEnd(align, this.left + padding, this.right - lineWidths[cursor.line]);\n }\n } else if (i > 0 && y + lineHeight > this.bottom) {\n x = cursor.x = x + columnSizes[cursor.line].width + padding;\n cursor.line++;\n y = cursor.y = _alignStartEnd(align, this.top + titleHeight + padding, this.bottom - columnSizes[cursor.line].height);\n }\n const realX = rtlHelper.x(x);\n drawLegendBox(realX, y, legendItem);\n x = _textX(textAlign, x + boxWidth + halfFontSize, isHorizontal ? x + width : this.right, opts.rtl);\n fillText(rtlHelper.x(x), y, legendItem);\n if (isHorizontal) {\n cursor.x += width + padding;\n } else {\n cursor.y += lineHeight;\n }\n });\n restoreTextDirection(this.ctx, opts.textDirection);\n }\n drawTitle() {\n const opts = this.options;\n const titleOpts = opts.title;\n const titleFont = toFont(titleOpts.font);\n const titlePadding = toPadding(titleOpts.padding);\n if (!titleOpts.display) {\n return;\n }\n const rtlHelper = getRtlAdapter(opts.rtl, this.left, this.width);\n const ctx = this.ctx;\n const position = titleOpts.position;\n const halfFontSize = titleFont.size / 2;\n const topPaddingPlusHalfFontSize = titlePadding.top + halfFontSize;\n let y;\n let left = this.left;\n let maxWidth = this.width;\n if (this.isHorizontal()) {\n maxWidth = Math.max(...this.lineWidths);\n y = this.top + topPaddingPlusHalfFontSize;\n left = _alignStartEnd(opts.align, left, this.right - maxWidth);\n } else {\n const maxHeight = this.columnSizes.reduce((acc, size) => Math.max(acc, size.height), 0);\n y = topPaddingPlusHalfFontSize + _alignStartEnd(opts.align, this.top, this.bottom - maxHeight - opts.labels.padding - this._computeTitleHeight());\n }\n const x = _alignStartEnd(position, left, left + maxWidth);\n ctx.textAlign = rtlHelper.textAlign(_toLeftRightCenter(position));\n ctx.textBaseline = 'middle';\n ctx.strokeStyle = titleOpts.color;\n ctx.fillStyle = titleOpts.color;\n ctx.font = titleFont.string;\n renderText(ctx, titleOpts.text, x, y, titleFont);\n }\n _computeTitleHeight() {\n const titleOpts = this.options.title;\n const titleFont = toFont(titleOpts.font);\n const titlePadding = toPadding(titleOpts.padding);\n return titleOpts.display ? titleFont.lineHeight + titlePadding.height : 0;\n }\n _getLegendItemAt(x, y) {\n let i, hitBox, lh;\n if (_isBetween(x, this.left, this.right)\n && _isBetween(y, this.top, this.bottom)) {\n lh = this.legendHitBoxes;\n for (i = 0; i < lh.length; ++i) {\n hitBox = lh[i];\n if (_isBetween(x, hitBox.left, hitBox.left + hitBox.width)\n && _isBetween(y, hitBox.top, hitBox.top + hitBox.height)) {\n return this.legendItems[i];\n }\n }\n }\n return null;\n }\n handleEvent(e) {\n const opts = this.options;\n if (!isListened(e.type, opts)) {\n return;\n }\n const hoveredItem = this._getLegendItemAt(e.x, e.y);\n if (e.type === 'mousemove' || e.type === 'mouseout') {\n const previous = this._hoveredItem;\n const sameItem = itemsEqual(previous, hoveredItem);\n if (previous && !sameItem) {\n callback(opts.onLeave, [e, previous, this], this);\n }\n this._hoveredItem = hoveredItem;\n if (hoveredItem && !sameItem) {\n callback(opts.onHover, [e, hoveredItem, this], this);\n }\n } else if (hoveredItem) {\n callback(opts.onClick, [e, hoveredItem, this], this);\n }\n }\n}\nfunction isListened(type, opts) {\n if ((type === 'mousemove' || type === 'mouseout') && (opts.onHover || opts.onLeave)) {\n return true;\n }\n if (opts.onClick && (type === 'click' || type === 'mouseup')) {\n return true;\n }\n return false;\n}\nvar plugin_legend = {\n id: 'legend',\n _element: Legend,\n start(chart, _args, options) {\n const legend = chart.legend = new Legend({ctx: chart.ctx, options, chart});\n layouts.configure(chart, legend, options);\n layouts.addBox(chart, legend);\n },\n stop(chart) {\n layouts.removeBox(chart, chart.legend);\n delete chart.legend;\n },\n beforeUpdate(chart, _args, options) {\n const legend = chart.legend;\n layouts.configure(chart, legend, options);\n legend.options = options;\n },\n afterUpdate(chart) {\n const legend = chart.legend;\n legend.buildLabels();\n legend.adjustHitBoxes();\n },\n afterEvent(chart, args) {\n if (!args.replay) {\n chart.legend.handleEvent(args.event);\n }\n },\n defaults: {\n display: true,\n position: 'top',\n align: 'center',\n fullSize: true,\n reverse: false,\n weight: 1000,\n onClick(e, legendItem, legend) {\n const index = legendItem.datasetIndex;\n const ci = legend.chart;\n if (ci.isDatasetVisible(index)) {\n ci.hide(index);\n legendItem.hidden = true;\n } else {\n ci.show(index);\n legendItem.hidden = false;\n }\n },\n onHover: null,\n onLeave: null,\n labels: {\n color: (ctx) => ctx.chart.options.color,\n boxWidth: 40,\n padding: 10,\n generateLabels(chart) {\n const datasets = chart.data.datasets;\n const {labels: {usePointStyle, pointStyle, textAlign, color}} = chart.legend.options;\n return chart._getSortedDatasetMetas().map((meta) => {\n const style = meta.controller.getStyle(usePointStyle ? 0 : undefined);\n const borderWidth = toPadding(style.borderWidth);\n return {\n text: datasets[meta.index].label,\n fillStyle: style.backgroundColor,\n fontColor: color,\n hidden: !meta.visible,\n lineCap: style.borderCapStyle,\n lineDash: style.borderDash,\n lineDashOffset: style.borderDashOffset,\n lineJoin: style.borderJoinStyle,\n lineWidth: (borderWidth.width + borderWidth.height) / 4,\n strokeStyle: style.borderColor,\n pointStyle: pointStyle || style.pointStyle,\n rotation: style.rotation,\n textAlign: textAlign || style.textAlign,\n borderRadius: 0,\n datasetIndex: meta.index\n };\n }, this);\n }\n },\n title: {\n color: (ctx) => ctx.chart.options.color,\n display: false,\n position: 'center',\n text: '',\n }\n },\n descriptors: {\n _scriptable: (name) => !name.startsWith('on'),\n labels: {\n _scriptable: (name) => !['generateLabels', 'filter', 'sort'].includes(name),\n }\n },\n};\n\nclass Title extends Element {\n constructor(config) {\n super();\n this.chart = config.chart;\n this.options = config.options;\n this.ctx = config.ctx;\n this._padding = undefined;\n this.top = undefined;\n this.bottom = undefined;\n this.left = undefined;\n this.right = undefined;\n this.width = undefined;\n this.height = undefined;\n this.position = undefined;\n this.weight = undefined;\n this.fullSize = undefined;\n }\n update(maxWidth, maxHeight) {\n const opts = this.options;\n this.left = 0;\n this.top = 0;\n if (!opts.display) {\n this.width = this.height = this.right = this.bottom = 0;\n return;\n }\n this.width = this.right = maxWidth;\n this.height = this.bottom = maxHeight;\n const lineCount = isArray(opts.text) ? opts.text.length : 1;\n this._padding = toPadding(opts.padding);\n const textSize = lineCount * toFont(opts.font).lineHeight + this._padding.height;\n if (this.isHorizontal()) {\n this.height = textSize;\n } else {\n this.width = textSize;\n }\n }\n isHorizontal() {\n const pos = this.options.position;\n return pos === 'top' || pos === 'bottom';\n }\n _drawArgs(offset) {\n const {top, left, bottom, right, options} = this;\n const align = options.align;\n let rotation = 0;\n let maxWidth, titleX, titleY;\n if (this.isHorizontal()) {\n titleX = _alignStartEnd(align, left, right);\n titleY = top + offset;\n maxWidth = right - left;\n } else {\n if (options.position === 'left') {\n titleX = left + offset;\n titleY = _alignStartEnd(align, bottom, top);\n rotation = PI * -0.5;\n } else {\n titleX = right - offset;\n titleY = _alignStartEnd(align, top, bottom);\n rotation = PI * 0.5;\n }\n maxWidth = bottom - top;\n }\n return {titleX, titleY, maxWidth, rotation};\n }\n draw() {\n const ctx = this.ctx;\n const opts = this.options;\n if (!opts.display) {\n return;\n }\n const fontOpts = toFont(opts.font);\n const lineHeight = fontOpts.lineHeight;\n const offset = lineHeight / 2 + this._padding.top;\n const {titleX, titleY, maxWidth, rotation} = this._drawArgs(offset);\n renderText(ctx, opts.text, 0, 0, fontOpts, {\n color: opts.color,\n maxWidth,\n rotation,\n textAlign: _toLeftRightCenter(opts.align),\n textBaseline: 'middle',\n translation: [titleX, titleY],\n });\n }\n}\nfunction createTitle(chart, titleOpts) {\n const title = new Title({\n ctx: chart.ctx,\n options: titleOpts,\n chart\n });\n layouts.configure(chart, title, titleOpts);\n layouts.addBox(chart, title);\n chart.titleBlock = title;\n}\nvar plugin_title = {\n id: 'title',\n _element: Title,\n start(chart, _args, options) {\n createTitle(chart, options);\n },\n stop(chart) {\n const titleBlock = chart.titleBlock;\n layouts.removeBox(chart, titleBlock);\n delete chart.titleBlock;\n },\n beforeUpdate(chart, _args, options) {\n const title = chart.titleBlock;\n layouts.configure(chart, title, options);\n title.options = options;\n },\n defaults: {\n align: 'center',\n display: false,\n font: {\n weight: 'bold',\n },\n fullSize: true,\n padding: 10,\n position: 'top',\n text: '',\n weight: 2000\n },\n defaultRoutes: {\n color: 'color'\n },\n descriptors: {\n _scriptable: true,\n _indexable: false,\n },\n};\n\nconst map = new WeakMap();\nvar plugin_subtitle = {\n id: 'subtitle',\n start(chart, _args, options) {\n const title = new Title({\n ctx: chart.ctx,\n options,\n chart\n });\n layouts.configure(chart, title, options);\n layouts.addBox(chart, title);\n map.set(chart, title);\n },\n stop(chart) {\n layouts.removeBox(chart, map.get(chart));\n map.delete(chart);\n },\n beforeUpdate(chart, _args, options) {\n const title = map.get(chart);\n layouts.configure(chart, title, options);\n title.options = options;\n },\n defaults: {\n align: 'center',\n display: false,\n font: {\n weight: 'normal',\n },\n fullSize: true,\n padding: 0,\n position: 'top',\n text: '',\n weight: 1500\n },\n defaultRoutes: {\n color: 'color'\n },\n descriptors: {\n _scriptable: true,\n _indexable: false,\n },\n};\n\nconst positioners = {\n average(items) {\n if (!items.length) {\n return false;\n }\n let i, len;\n let x = 0;\n let y = 0;\n let count = 0;\n for (i = 0, len = items.length; i < len; ++i) {\n const el = items[i].element;\n if (el && el.hasValue()) {\n const pos = el.tooltipPosition();\n x += pos.x;\n y += pos.y;\n ++count;\n }\n }\n return {\n x: x / count,\n y: y / count\n };\n },\n nearest(items, eventPosition) {\n if (!items.length) {\n return false;\n }\n let x = eventPosition.x;\n let y = eventPosition.y;\n let minDistance = Number.POSITIVE_INFINITY;\n let i, len, nearestElement;\n for (i = 0, len = items.length; i < len; ++i) {\n const el = items[i].element;\n if (el && el.hasValue()) {\n const center = el.getCenterPoint();\n const d = distanceBetweenPoints(eventPosition, center);\n if (d < minDistance) {\n minDistance = d;\n nearestElement = el;\n }\n }\n }\n if (nearestElement) {\n const tp = nearestElement.tooltipPosition();\n x = tp.x;\n y = tp.y;\n }\n return {\n x,\n y\n };\n }\n};\nfunction pushOrConcat(base, toPush) {\n if (toPush) {\n if (isArray(toPush)) {\n Array.prototype.push.apply(base, toPush);\n } else {\n base.push(toPush);\n }\n }\n return base;\n}\nfunction splitNewlines(str) {\n if ((typeof str === 'string' || str instanceof String) && str.indexOf('\\n') > -1) {\n return str.split('\\n');\n }\n return str;\n}\nfunction createTooltipItem(chart, item) {\n const {element, datasetIndex, index} = item;\n const controller = chart.getDatasetMeta(datasetIndex).controller;\n const {label, value} = controller.getLabelAndValue(index);\n return {\n chart,\n label,\n parsed: controller.getParsed(index),\n raw: chart.data.datasets[datasetIndex].data[index],\n formattedValue: value,\n dataset: controller.getDataset(),\n dataIndex: index,\n datasetIndex,\n element\n };\n}\nfunction getTooltipSize(tooltip, options) {\n const ctx = tooltip.chart.ctx;\n const {body, footer, title} = tooltip;\n const {boxWidth, boxHeight} = options;\n const bodyFont = toFont(options.bodyFont);\n const titleFont = toFont(options.titleFont);\n const footerFont = toFont(options.footerFont);\n const titleLineCount = title.length;\n const footerLineCount = footer.length;\n const bodyLineItemCount = body.length;\n const padding = toPadding(options.padding);\n let height = padding.height;\n let width = 0;\n let combinedBodyLength = body.reduce((count, bodyItem) => count + bodyItem.before.length + bodyItem.lines.length + bodyItem.after.length, 0);\n combinedBodyLength += tooltip.beforeBody.length + tooltip.afterBody.length;\n if (titleLineCount) {\n height += titleLineCount * titleFont.lineHeight\n\t\t\t+ (titleLineCount - 1) * options.titleSpacing\n\t\t\t+ options.titleMarginBottom;\n }\n if (combinedBodyLength) {\n const bodyLineHeight = options.displayColors ? Math.max(boxHeight, bodyFont.lineHeight) : bodyFont.lineHeight;\n height += bodyLineItemCount * bodyLineHeight\n\t\t\t+ (combinedBodyLength - bodyLineItemCount) * bodyFont.lineHeight\n\t\t\t+ (combinedBodyLength - 1) * options.bodySpacing;\n }\n if (footerLineCount) {\n height += options.footerMarginTop\n\t\t\t+ footerLineCount * footerFont.lineHeight\n\t\t\t+ (footerLineCount - 1) * options.footerSpacing;\n }\n let widthPadding = 0;\n const maxLineWidth = function(line) {\n width = Math.max(width, ctx.measureText(line).width + widthPadding);\n };\n ctx.save();\n ctx.font = titleFont.string;\n each(tooltip.title, maxLineWidth);\n ctx.font = bodyFont.string;\n each(tooltip.beforeBody.concat(tooltip.afterBody), maxLineWidth);\n widthPadding = options.displayColors ? (boxWidth + 2 + options.boxPadding) : 0;\n each(body, (bodyItem) => {\n each(bodyItem.before, maxLineWidth);\n each(bodyItem.lines, maxLineWidth);\n each(bodyItem.after, maxLineWidth);\n });\n widthPadding = 0;\n ctx.font = footerFont.string;\n each(tooltip.footer, maxLineWidth);\n ctx.restore();\n width += padding.width;\n return {width, height};\n}\nfunction determineYAlign(chart, size) {\n const {y, height} = size;\n if (y < height / 2) {\n return 'top';\n } else if (y > (chart.height - height / 2)) {\n return 'bottom';\n }\n return 'center';\n}\nfunction doesNotFitWithAlign(xAlign, chart, options, size) {\n const {x, width} = size;\n const caret = options.caretSize + options.caretPadding;\n if (xAlign === 'left' && x + width + caret > chart.width) {\n return true;\n }\n if (xAlign === 'right' && x - width - caret < 0) {\n return true;\n }\n}\nfunction determineXAlign(chart, options, size, yAlign) {\n const {x, width} = size;\n const {width: chartWidth, chartArea: {left, right}} = chart;\n let xAlign = 'center';\n if (yAlign === 'center') {\n xAlign = x <= (left + right) / 2 ? 'left' : 'right';\n } else if (x <= width / 2) {\n xAlign = 'left';\n } else if (x >= chartWidth - width / 2) {\n xAlign = 'right';\n }\n if (doesNotFitWithAlign(xAlign, chart, options, size)) {\n xAlign = 'center';\n }\n return xAlign;\n}\nfunction determineAlignment(chart, options, size) {\n const yAlign = size.yAlign || options.yAlign || determineYAlign(chart, size);\n return {\n xAlign: size.xAlign || options.xAlign || determineXAlign(chart, options, size, yAlign),\n yAlign\n };\n}\nfunction alignX(size, xAlign) {\n let {x, width} = size;\n if (xAlign === 'right') {\n x -= width;\n } else if (xAlign === 'center') {\n x -= (width / 2);\n }\n return x;\n}\nfunction alignY(size, yAlign, paddingAndSize) {\n let {y, height} = size;\n if (yAlign === 'top') {\n y += paddingAndSize;\n } else if (yAlign === 'bottom') {\n y -= height + paddingAndSize;\n } else {\n y -= (height / 2);\n }\n return y;\n}\nfunction getBackgroundPoint(options, size, alignment, chart) {\n const {caretSize, caretPadding, cornerRadius} = options;\n const {xAlign, yAlign} = alignment;\n const paddingAndSize = caretSize + caretPadding;\n const {topLeft, topRight, bottomLeft, bottomRight} = toTRBLCorners(cornerRadius);\n let x = alignX(size, xAlign);\n const y = alignY(size, yAlign, paddingAndSize);\n if (yAlign === 'center') {\n if (xAlign === 'left') {\n x += paddingAndSize;\n } else if (xAlign === 'right') {\n x -= paddingAndSize;\n }\n } else if (xAlign === 'left') {\n x -= Math.max(topLeft, bottomLeft) + caretSize;\n } else if (xAlign === 'right') {\n x += Math.max(topRight, bottomRight) + caretSize;\n }\n return {\n x: _limitValue(x, 0, chart.width - size.width),\n y: _limitValue(y, 0, chart.height - size.height)\n };\n}\nfunction getAlignedX(tooltip, align, options) {\n const padding = toPadding(options.padding);\n return align === 'center'\n ? tooltip.x + tooltip.width / 2\n : align === 'right'\n ? tooltip.x + tooltip.width - padding.right\n : tooltip.x + padding.left;\n}\nfunction getBeforeAfterBodyLines(callback) {\n return pushOrConcat([], splitNewlines(callback));\n}\nfunction createTooltipContext(parent, tooltip, tooltipItems) {\n return createContext(parent, {\n tooltip,\n tooltipItems,\n type: 'tooltip'\n });\n}\nfunction overrideCallbacks(callbacks, context) {\n const override = context && context.dataset && context.dataset.tooltip && context.dataset.tooltip.callbacks;\n return override ? callbacks.override(override) : callbacks;\n}\nclass Tooltip extends Element {\n constructor(config) {\n super();\n this.opacity = 0;\n this._active = [];\n this._eventPosition = undefined;\n this._size = undefined;\n this._cachedAnimations = undefined;\n this._tooltipItems = [];\n this.$animations = undefined;\n this.$context = undefined;\n this.chart = config.chart || config._chart;\n this._chart = this.chart;\n this.options = config.options;\n this.dataPoints = undefined;\n this.title = undefined;\n this.beforeBody = undefined;\n this.body = undefined;\n this.afterBody = undefined;\n this.footer = undefined;\n this.xAlign = undefined;\n this.yAlign = undefined;\n this.x = undefined;\n this.y = undefined;\n this.height = undefined;\n this.width = undefined;\n this.caretX = undefined;\n this.caretY = undefined;\n this.labelColors = undefined;\n this.labelPointStyles = undefined;\n this.labelTextColors = undefined;\n }\n initialize(options) {\n this.options = options;\n this._cachedAnimations = undefined;\n this.$context = undefined;\n }\n _resolveAnimations() {\n const cached = this._cachedAnimations;\n if (cached) {\n return cached;\n }\n const chart = this.chart;\n const options = this.options.setContext(this.getContext());\n const opts = options.enabled && chart.options.animation && options.animations;\n const animations = new Animations(this.chart, opts);\n if (opts._cacheable) {\n this._cachedAnimations = Object.freeze(animations);\n }\n return animations;\n }\n getContext() {\n return this.$context ||\n\t\t\t(this.$context = createTooltipContext(this.chart.getContext(), this, this._tooltipItems));\n }\n getTitle(context, options) {\n const {callbacks} = options;\n const beforeTitle = callbacks.beforeTitle.apply(this, [context]);\n const title = callbacks.title.apply(this, [context]);\n const afterTitle = callbacks.afterTitle.apply(this, [context]);\n let lines = [];\n lines = pushOrConcat(lines, splitNewlines(beforeTitle));\n lines = pushOrConcat(lines, splitNewlines(title));\n lines = pushOrConcat(lines, splitNewlines(afterTitle));\n return lines;\n }\n getBeforeBody(tooltipItems, options) {\n return getBeforeAfterBodyLines(options.callbacks.beforeBody.apply(this, [tooltipItems]));\n }\n getBody(tooltipItems, options) {\n const {callbacks} = options;\n const bodyItems = [];\n each(tooltipItems, (context) => {\n const bodyItem = {\n before: [],\n lines: [],\n after: []\n };\n const scoped = overrideCallbacks(callbacks, context);\n pushOrConcat(bodyItem.before, splitNewlines(scoped.beforeLabel.call(this, context)));\n pushOrConcat(bodyItem.lines, scoped.label.call(this, context));\n pushOrConcat(bodyItem.after, splitNewlines(scoped.afterLabel.call(this, context)));\n bodyItems.push(bodyItem);\n });\n return bodyItems;\n }\n getAfterBody(tooltipItems, options) {\n return getBeforeAfterBodyLines(options.callbacks.afterBody.apply(this, [tooltipItems]));\n }\n getFooter(tooltipItems, options) {\n const {callbacks} = options;\n const beforeFooter = callbacks.beforeFooter.apply(this, [tooltipItems]);\n const footer = callbacks.footer.apply(this, [tooltipItems]);\n const afterFooter = callbacks.afterFooter.apply(this, [tooltipItems]);\n let lines = [];\n lines = pushOrConcat(lines, splitNewlines(beforeFooter));\n lines = pushOrConcat(lines, splitNewlines(footer));\n lines = pushOrConcat(lines, splitNewlines(afterFooter));\n return lines;\n }\n _createItems(options) {\n const active = this._active;\n const data = this.chart.data;\n const labelColors = [];\n const labelPointStyles = [];\n const labelTextColors = [];\n let tooltipItems = [];\n let i, len;\n for (i = 0, len = active.length; i < len; ++i) {\n tooltipItems.push(createTooltipItem(this.chart, active[i]));\n }\n if (options.filter) {\n tooltipItems = tooltipItems.filter((element, index, array) => options.filter(element, index, array, data));\n }\n if (options.itemSort) {\n tooltipItems = tooltipItems.sort((a, b) => options.itemSort(a, b, data));\n }\n each(tooltipItems, (context) => {\n const scoped = overrideCallbacks(options.callbacks, context);\n labelColors.push(scoped.labelColor.call(this, context));\n labelPointStyles.push(scoped.labelPointStyle.call(this, context));\n labelTextColors.push(scoped.labelTextColor.call(this, context));\n });\n this.labelColors = labelColors;\n this.labelPointStyles = labelPointStyles;\n this.labelTextColors = labelTextColors;\n this.dataPoints = tooltipItems;\n return tooltipItems;\n }\n update(changed, replay) {\n const options = this.options.setContext(this.getContext());\n const active = this._active;\n let properties;\n let tooltipItems = [];\n if (!active.length) {\n if (this.opacity !== 0) {\n properties = {\n opacity: 0\n };\n }\n } else {\n const position = positioners[options.position].call(this, active, this._eventPosition);\n tooltipItems = this._createItems(options);\n this.title = this.getTitle(tooltipItems, options);\n this.beforeBody = this.getBeforeBody(tooltipItems, options);\n this.body = this.getBody(tooltipItems, options);\n this.afterBody = this.getAfterBody(tooltipItems, options);\n this.footer = this.getFooter(tooltipItems, options);\n const size = this._size = getTooltipSize(this, options);\n const positionAndSize = Object.assign({}, position, size);\n const alignment = determineAlignment(this.chart, options, positionAndSize);\n const backgroundPoint = getBackgroundPoint(options, positionAndSize, alignment, this.chart);\n this.xAlign = alignment.xAlign;\n this.yAlign = alignment.yAlign;\n properties = {\n opacity: 1,\n x: backgroundPoint.x,\n y: backgroundPoint.y,\n width: size.width,\n height: size.height,\n caretX: position.x,\n caretY: position.y\n };\n }\n this._tooltipItems = tooltipItems;\n this.$context = undefined;\n if (properties) {\n this._resolveAnimations().update(this, properties);\n }\n if (changed && options.external) {\n options.external.call(this, {chart: this.chart, tooltip: this, replay});\n }\n }\n drawCaret(tooltipPoint, ctx, size, options) {\n const caretPosition = this.getCaretPosition(tooltipPoint, size, options);\n ctx.lineTo(caretPosition.x1, caretPosition.y1);\n ctx.lineTo(caretPosition.x2, caretPosition.y2);\n ctx.lineTo(caretPosition.x3, caretPosition.y3);\n }\n getCaretPosition(tooltipPoint, size, options) {\n const {xAlign, yAlign} = this;\n const {caretSize, cornerRadius} = options;\n const {topLeft, topRight, bottomLeft, bottomRight} = toTRBLCorners(cornerRadius);\n const {x: ptX, y: ptY} = tooltipPoint;\n const {width, height} = size;\n let x1, x2, x3, y1, y2, y3;\n if (yAlign === 'center') {\n y2 = ptY + (height / 2);\n if (xAlign === 'left') {\n x1 = ptX;\n x2 = x1 - caretSize;\n y1 = y2 + caretSize;\n y3 = y2 - caretSize;\n } else {\n x1 = ptX + width;\n x2 = x1 + caretSize;\n y1 = y2 - caretSize;\n y3 = y2 + caretSize;\n }\n x3 = x1;\n } else {\n if (xAlign === 'left') {\n x2 = ptX + Math.max(topLeft, bottomLeft) + (caretSize);\n } else if (xAlign === 'right') {\n x2 = ptX + width - Math.max(topRight, bottomRight) - caretSize;\n } else {\n x2 = this.caretX;\n }\n if (yAlign === 'top') {\n y1 = ptY;\n y2 = y1 - caretSize;\n x1 = x2 - caretSize;\n x3 = x2 + caretSize;\n } else {\n y1 = ptY + height;\n y2 = y1 + caretSize;\n x1 = x2 + caretSize;\n x3 = x2 - caretSize;\n }\n y3 = y1;\n }\n return {x1, x2, x3, y1, y2, y3};\n }\n drawTitle(pt, ctx, options) {\n const title = this.title;\n const length = title.length;\n let titleFont, titleSpacing, i;\n if (length) {\n const rtlHelper = getRtlAdapter(options.rtl, this.x, this.width);\n pt.x = getAlignedX(this, options.titleAlign, options);\n ctx.textAlign = rtlHelper.textAlign(options.titleAlign);\n ctx.textBaseline = 'middle';\n titleFont = toFont(options.titleFont);\n titleSpacing = options.titleSpacing;\n ctx.fillStyle = options.titleColor;\n ctx.font = titleFont.string;\n for (i = 0; i < length; ++i) {\n ctx.fillText(title[i], rtlHelper.x(pt.x), pt.y + titleFont.lineHeight / 2);\n pt.y += titleFont.lineHeight + titleSpacing;\n if (i + 1 === length) {\n pt.y += options.titleMarginBottom - titleSpacing;\n }\n }\n }\n }\n _drawColorBox(ctx, pt, i, rtlHelper, options) {\n const labelColors = this.labelColors[i];\n const labelPointStyle = this.labelPointStyles[i];\n const {boxHeight, boxWidth, boxPadding} = options;\n const bodyFont = toFont(options.bodyFont);\n const colorX = getAlignedX(this, 'left', options);\n const rtlColorX = rtlHelper.x(colorX);\n const yOffSet = boxHeight < bodyFont.lineHeight ? (bodyFont.lineHeight - boxHeight) / 2 : 0;\n const colorY = pt.y + yOffSet;\n if (options.usePointStyle) {\n const drawOptions = {\n radius: Math.min(boxWidth, boxHeight) / 2,\n pointStyle: labelPointStyle.pointStyle,\n rotation: labelPointStyle.rotation,\n borderWidth: 1\n };\n const centerX = rtlHelper.leftForLtr(rtlColorX, boxWidth) + boxWidth / 2;\n const centerY = colorY + boxHeight / 2;\n ctx.strokeStyle = options.multiKeyBackground;\n ctx.fillStyle = options.multiKeyBackground;\n drawPoint(ctx, drawOptions, centerX, centerY);\n ctx.strokeStyle = labelColors.borderColor;\n ctx.fillStyle = labelColors.backgroundColor;\n drawPoint(ctx, drawOptions, centerX, centerY);\n } else {\n ctx.lineWidth = isObject(labelColors.borderWidth) ? Math.max(...Object.values(labelColors.borderWidth)) : (labelColors.borderWidth || 1);\n ctx.strokeStyle = labelColors.borderColor;\n ctx.setLineDash(labelColors.borderDash || []);\n ctx.lineDashOffset = labelColors.borderDashOffset || 0;\n const outerX = rtlHelper.leftForLtr(rtlColorX, boxWidth - boxPadding);\n const innerX = rtlHelper.leftForLtr(rtlHelper.xPlus(rtlColorX, 1), boxWidth - boxPadding - 2);\n const borderRadius = toTRBLCorners(labelColors.borderRadius);\n if (Object.values(borderRadius).some(v => v !== 0)) {\n ctx.beginPath();\n ctx.fillStyle = options.multiKeyBackground;\n addRoundedRectPath(ctx, {\n x: outerX,\n y: colorY,\n w: boxWidth,\n h: boxHeight,\n radius: borderRadius,\n });\n ctx.fill();\n ctx.stroke();\n ctx.fillStyle = labelColors.backgroundColor;\n ctx.beginPath();\n addRoundedRectPath(ctx, {\n x: innerX,\n y: colorY + 1,\n w: boxWidth - 2,\n h: boxHeight - 2,\n radius: borderRadius,\n });\n ctx.fill();\n } else {\n ctx.fillStyle = options.multiKeyBackground;\n ctx.fillRect(outerX, colorY, boxWidth, boxHeight);\n ctx.strokeRect(outerX, colorY, boxWidth, boxHeight);\n ctx.fillStyle = labelColors.backgroundColor;\n ctx.fillRect(innerX, colorY + 1, boxWidth - 2, boxHeight - 2);\n }\n }\n ctx.fillStyle = this.labelTextColors[i];\n }\n drawBody(pt, ctx, options) {\n const {body} = this;\n const {bodySpacing, bodyAlign, displayColors, boxHeight, boxWidth, boxPadding} = options;\n const bodyFont = toFont(options.bodyFont);\n let bodyLineHeight = bodyFont.lineHeight;\n let xLinePadding = 0;\n const rtlHelper = getRtlAdapter(options.rtl, this.x, this.width);\n const fillLineOfText = function(line) {\n ctx.fillText(line, rtlHelper.x(pt.x + xLinePadding), pt.y + bodyLineHeight / 2);\n pt.y += bodyLineHeight + bodySpacing;\n };\n const bodyAlignForCalculation = rtlHelper.textAlign(bodyAlign);\n let bodyItem, textColor, lines, i, j, ilen, jlen;\n ctx.textAlign = bodyAlign;\n ctx.textBaseline = 'middle';\n ctx.font = bodyFont.string;\n pt.x = getAlignedX(this, bodyAlignForCalculation, options);\n ctx.fillStyle = options.bodyColor;\n each(this.beforeBody, fillLineOfText);\n xLinePadding = displayColors && bodyAlignForCalculation !== 'right'\n ? bodyAlign === 'center' ? (boxWidth / 2 + boxPadding) : (boxWidth + 2 + boxPadding)\n : 0;\n for (i = 0, ilen = body.length; i < ilen; ++i) {\n bodyItem = body[i];\n textColor = this.labelTextColors[i];\n ctx.fillStyle = textColor;\n each(bodyItem.before, fillLineOfText);\n lines = bodyItem.lines;\n if (displayColors && lines.length) {\n this._drawColorBox(ctx, pt, i, rtlHelper, options);\n bodyLineHeight = Math.max(bodyFont.lineHeight, boxHeight);\n }\n for (j = 0, jlen = lines.length; j < jlen; ++j) {\n fillLineOfText(lines[j]);\n bodyLineHeight = bodyFont.lineHeight;\n }\n each(bodyItem.after, fillLineOfText);\n }\n xLinePadding = 0;\n bodyLineHeight = bodyFont.lineHeight;\n each(this.afterBody, fillLineOfText);\n pt.y -= bodySpacing;\n }\n drawFooter(pt, ctx, options) {\n const footer = this.footer;\n const length = footer.length;\n let footerFont, i;\n if (length) {\n const rtlHelper = getRtlAdapter(options.rtl, this.x, this.width);\n pt.x = getAlignedX(this, options.footerAlign, options);\n pt.y += options.footerMarginTop;\n ctx.textAlign = rtlHelper.textAlign(options.footerAlign);\n ctx.textBaseline = 'middle';\n footerFont = toFont(options.footerFont);\n ctx.fillStyle = options.footerColor;\n ctx.font = footerFont.string;\n for (i = 0; i < length; ++i) {\n ctx.fillText(footer[i], rtlHelper.x(pt.x), pt.y + footerFont.lineHeight / 2);\n pt.y += footerFont.lineHeight + options.footerSpacing;\n }\n }\n }\n drawBackground(pt, ctx, tooltipSize, options) {\n const {xAlign, yAlign} = this;\n const {x, y} = pt;\n const {width, height} = tooltipSize;\n const {topLeft, topRight, bottomLeft, bottomRight} = toTRBLCorners(options.cornerRadius);\n ctx.fillStyle = options.backgroundColor;\n ctx.strokeStyle = options.borderColor;\n ctx.lineWidth = options.borderWidth;\n ctx.beginPath();\n ctx.moveTo(x + topLeft, y);\n if (yAlign === 'top') {\n this.drawCaret(pt, ctx, tooltipSize, options);\n }\n ctx.lineTo(x + width - topRight, y);\n ctx.quadraticCurveTo(x + width, y, x + width, y + topRight);\n if (yAlign === 'center' && xAlign === 'right') {\n this.drawCaret(pt, ctx, tooltipSize, options);\n }\n ctx.lineTo(x + width, y + height - bottomRight);\n ctx.quadraticCurveTo(x + width, y + height, x + width - bottomRight, y + height);\n if (yAlign === 'bottom') {\n this.drawCaret(pt, ctx, tooltipSize, options);\n }\n ctx.lineTo(x + bottomLeft, y + height);\n ctx.quadraticCurveTo(x, y + height, x, y + height - bottomLeft);\n if (yAlign === 'center' && xAlign === 'left') {\n this.drawCaret(pt, ctx, tooltipSize, options);\n }\n ctx.lineTo(x, y + topLeft);\n ctx.quadraticCurveTo(x, y, x + topLeft, y);\n ctx.closePath();\n ctx.fill();\n if (options.borderWidth > 0) {\n ctx.stroke();\n }\n }\n _updateAnimationTarget(options) {\n const chart = this.chart;\n const anims = this.$animations;\n const animX = anims && anims.x;\n const animY = anims && anims.y;\n if (animX || animY) {\n const position = positioners[options.position].call(this, this._active, this._eventPosition);\n if (!position) {\n return;\n }\n const size = this._size = getTooltipSize(this, options);\n const positionAndSize = Object.assign({}, position, this._size);\n const alignment = determineAlignment(chart, options, positionAndSize);\n const point = getBackgroundPoint(options, positionAndSize, alignment, chart);\n if (animX._to !== point.x || animY._to !== point.y) {\n this.xAlign = alignment.xAlign;\n this.yAlign = alignment.yAlign;\n this.width = size.width;\n this.height = size.height;\n this.caretX = position.x;\n this.caretY = position.y;\n this._resolveAnimations().update(this, point);\n }\n }\n }\n _willRender() {\n return !!this.opacity;\n }\n draw(ctx) {\n const options = this.options.setContext(this.getContext());\n let opacity = this.opacity;\n if (!opacity) {\n return;\n }\n this._updateAnimationTarget(options);\n const tooltipSize = {\n width: this.width,\n height: this.height\n };\n const pt = {\n x: this.x,\n y: this.y\n };\n opacity = Math.abs(opacity) < 1e-3 ? 0 : opacity;\n const padding = toPadding(options.padding);\n const hasTooltipContent = this.title.length || this.beforeBody.length || this.body.length || this.afterBody.length || this.footer.length;\n if (options.enabled && hasTooltipContent) {\n ctx.save();\n ctx.globalAlpha = opacity;\n this.drawBackground(pt, ctx, tooltipSize, options);\n overrideTextDirection(ctx, options.textDirection);\n pt.y += padding.top;\n this.drawTitle(pt, ctx, options);\n this.drawBody(pt, ctx, options);\n this.drawFooter(pt, ctx, options);\n restoreTextDirection(ctx, options.textDirection);\n ctx.restore();\n }\n }\n getActiveElements() {\n return this._active || [];\n }\n setActiveElements(activeElements, eventPosition) {\n const lastActive = this._active;\n const active = activeElements.map(({datasetIndex, index}) => {\n const meta = this.chart.getDatasetMeta(datasetIndex);\n if (!meta) {\n throw new Error('Cannot find a dataset at index ' + datasetIndex);\n }\n return {\n datasetIndex,\n element: meta.data[index],\n index,\n };\n });\n const changed = !_elementsEqual(lastActive, active);\n const positionChanged = this._positionChanged(active, eventPosition);\n if (changed || positionChanged) {\n this._active = active;\n this._eventPosition = eventPosition;\n this._ignoreReplayEvents = true;\n this.update(true);\n }\n }\n handleEvent(e, replay, inChartArea = true) {\n if (replay && this._ignoreReplayEvents) {\n return false;\n }\n this._ignoreReplayEvents = false;\n const options = this.options;\n const lastActive = this._active || [];\n const active = this._getActiveElements(e, lastActive, replay, inChartArea);\n const positionChanged = this._positionChanged(active, e);\n const changed = replay || !_elementsEqual(active, lastActive) || positionChanged;\n if (changed) {\n this._active = active;\n if (options.enabled || options.external) {\n this._eventPosition = {\n x: e.x,\n y: e.y\n };\n this.update(true, replay);\n }\n }\n return changed;\n }\n _getActiveElements(e, lastActive, replay, inChartArea) {\n const options = this.options;\n if (e.type === 'mouseout') {\n return [];\n }\n if (!inChartArea) {\n return lastActive;\n }\n const active = this.chart.getElementsAtEventForMode(e, options.mode, options, replay);\n if (options.reverse) {\n active.reverse();\n }\n return active;\n }\n _positionChanged(active, e) {\n const {caretX, caretY, options} = this;\n const position = positioners[options.position].call(this, active, e);\n return position !== false && (caretX !== position.x || caretY !== position.y);\n }\n}\nTooltip.positioners = positioners;\nvar plugin_tooltip = {\n id: 'tooltip',\n _element: Tooltip,\n positioners,\n afterInit(chart, _args, options) {\n if (options) {\n chart.tooltip = new Tooltip({chart, options});\n }\n },\n beforeUpdate(chart, _args, options) {\n if (chart.tooltip) {\n chart.tooltip.initialize(options);\n }\n },\n reset(chart, _args, options) {\n if (chart.tooltip) {\n chart.tooltip.initialize(options);\n }\n },\n afterDraw(chart) {\n const tooltip = chart.tooltip;\n if (tooltip && tooltip._willRender()) {\n const args = {\n tooltip\n };\n if (chart.notifyPlugins('beforeTooltipDraw', args) === false) {\n return;\n }\n tooltip.draw(chart.ctx);\n chart.notifyPlugins('afterTooltipDraw', args);\n }\n },\n afterEvent(chart, args) {\n if (chart.tooltip) {\n const useFinalPosition = args.replay;\n if (chart.tooltip.handleEvent(args.event, useFinalPosition, args.inChartArea)) {\n args.changed = true;\n }\n }\n },\n defaults: {\n enabled: true,\n external: null,\n position: 'average',\n backgroundColor: 'rgba(0,0,0,0.8)',\n titleColor: '#fff',\n titleFont: {\n weight: 'bold',\n },\n titleSpacing: 2,\n titleMarginBottom: 6,\n titleAlign: 'left',\n bodyColor: '#fff',\n bodySpacing: 2,\n bodyFont: {\n },\n bodyAlign: 'left',\n footerColor: '#fff',\n footerSpacing: 2,\n footerMarginTop: 6,\n footerFont: {\n weight: 'bold',\n },\n footerAlign: 'left',\n padding: 6,\n caretPadding: 2,\n caretSize: 5,\n cornerRadius: 6,\n boxHeight: (ctx, opts) => opts.bodyFont.size,\n boxWidth: (ctx, opts) => opts.bodyFont.size,\n multiKeyBackground: '#fff',\n displayColors: true,\n boxPadding: 0,\n borderColor: 'rgba(0,0,0,0)',\n borderWidth: 0,\n animation: {\n duration: 400,\n easing: 'easeOutQuart',\n },\n animations: {\n numbers: {\n type: 'number',\n properties: ['x', 'y', 'width', 'height', 'caretX', 'caretY'],\n },\n opacity: {\n easing: 'linear',\n duration: 200\n }\n },\n callbacks: {\n beforeTitle: noop,\n title(tooltipItems) {\n if (tooltipItems.length > 0) {\n const item = tooltipItems[0];\n const labels = item.chart.data.labels;\n const labelCount = labels ? labels.length : 0;\n if (this && this.options && this.options.mode === 'dataset') {\n return item.dataset.label || '';\n } else if (item.label) {\n return item.label;\n } else if (labelCount > 0 && item.dataIndex < labelCount) {\n return labels[item.dataIndex];\n }\n }\n return '';\n },\n afterTitle: noop,\n beforeBody: noop,\n beforeLabel: noop,\n label(tooltipItem) {\n if (this && this.options && this.options.mode === 'dataset') {\n return tooltipItem.label + ': ' + tooltipItem.formattedValue || tooltipItem.formattedValue;\n }\n let label = tooltipItem.dataset.label || '';\n if (label) {\n label += ': ';\n }\n const value = tooltipItem.formattedValue;\n if (!isNullOrUndef(value)) {\n label += value;\n }\n return label;\n },\n labelColor(tooltipItem) {\n const meta = tooltipItem.chart.getDatasetMeta(tooltipItem.datasetIndex);\n const options = meta.controller.getStyle(tooltipItem.dataIndex);\n return {\n borderColor: options.borderColor,\n backgroundColor: options.backgroundColor,\n borderWidth: options.borderWidth,\n borderDash: options.borderDash,\n borderDashOffset: options.borderDashOffset,\n borderRadius: 0,\n };\n },\n labelTextColor() {\n return this.options.bodyColor;\n },\n labelPointStyle(tooltipItem) {\n const meta = tooltipItem.chart.getDatasetMeta(tooltipItem.datasetIndex);\n const options = meta.controller.getStyle(tooltipItem.dataIndex);\n return {\n pointStyle: options.pointStyle,\n rotation: options.rotation,\n };\n },\n afterLabel: noop,\n afterBody: noop,\n beforeFooter: noop,\n footer: noop,\n afterFooter: noop\n }\n },\n defaultRoutes: {\n bodyFont: 'font',\n footerFont: 'font',\n titleFont: 'font'\n },\n descriptors: {\n _scriptable: (name) => name !== 'filter' && name !== 'itemSort' && name !== 'external',\n _indexable: false,\n callbacks: {\n _scriptable: false,\n _indexable: false,\n },\n animation: {\n _fallback: false\n },\n animations: {\n _fallback: 'animation'\n }\n },\n additionalOptionScopes: ['interaction']\n};\n\nvar plugins = /*#__PURE__*/Object.freeze({\n__proto__: null,\nDecimation: plugin_decimation,\nFiller: index,\nLegend: plugin_legend,\nSubTitle: plugin_subtitle,\nTitle: plugin_title,\nTooltip: plugin_tooltip\n});\n\nconst addIfString = (labels, raw, index, addedLabels) => {\n if (typeof raw === 'string') {\n index = labels.push(raw) - 1;\n addedLabels.unshift({index, label: raw});\n } else if (isNaN(raw)) {\n index = null;\n }\n return index;\n};\nfunction findOrAddLabel(labels, raw, index, addedLabels) {\n const first = labels.indexOf(raw);\n if (first === -1) {\n return addIfString(labels, raw, index, addedLabels);\n }\n const last = labels.lastIndexOf(raw);\n return first !== last ? index : first;\n}\nconst validIndex = (index, max) => index === null ? null : _limitValue(Math.round(index), 0, max);\nclass CategoryScale extends Scale {\n constructor(cfg) {\n super(cfg);\n this._startValue = undefined;\n this._valueRange = 0;\n this._addedLabels = [];\n }\n init(scaleOptions) {\n const added = this._addedLabels;\n if (added.length) {\n const labels = this.getLabels();\n for (const {index, label} of added) {\n if (labels[index] === label) {\n labels.splice(index, 1);\n }\n }\n this._addedLabels = [];\n }\n super.init(scaleOptions);\n }\n parse(raw, index) {\n if (isNullOrUndef(raw)) {\n return null;\n }\n const labels = this.getLabels();\n index = isFinite(index) && labels[index] === raw ? index\n : findOrAddLabel(labels, raw, valueOrDefault(index, raw), this._addedLabels);\n return validIndex(index, labels.length - 1);\n }\n determineDataLimits() {\n const {minDefined, maxDefined} = this.getUserBounds();\n let {min, max} = this.getMinMax(true);\n if (this.options.bounds === 'ticks') {\n if (!minDefined) {\n min = 0;\n }\n if (!maxDefined) {\n max = this.getLabels().length - 1;\n }\n }\n this.min = min;\n this.max = max;\n }\n buildTicks() {\n const min = this.min;\n const max = this.max;\n const offset = this.options.offset;\n const ticks = [];\n let labels = this.getLabels();\n labels = (min === 0 && max === labels.length - 1) ? labels : labels.slice(min, max + 1);\n this._valueRange = Math.max(labels.length - (offset ? 0 : 1), 1);\n this._startValue = this.min - (offset ? 0.5 : 0);\n for (let value = min; value <= max; value++) {\n ticks.push({value});\n }\n return ticks;\n }\n getLabelForValue(value) {\n const labels = this.getLabels();\n if (value >= 0 && value < labels.length) {\n return labels[value];\n }\n return value;\n }\n configure() {\n super.configure();\n if (!this.isHorizontal()) {\n this._reversePixels = !this._reversePixels;\n }\n }\n getPixelForValue(value) {\n if (typeof value !== 'number') {\n value = this.parse(value);\n }\n return value === null ? NaN : this.getPixelForDecimal((value - this._startValue) / this._valueRange);\n }\n getPixelForTick(index) {\n const ticks = this.ticks;\n if (index < 0 || index > ticks.length - 1) {\n return null;\n }\n return this.getPixelForValue(ticks[index].value);\n }\n getValueForPixel(pixel) {\n return Math.round(this._startValue + this.getDecimalForPixel(pixel) * this._valueRange);\n }\n getBasePixel() {\n return this.bottom;\n }\n}\nCategoryScale.id = 'category';\nCategoryScale.defaults = {\n ticks: {\n callback: CategoryScale.prototype.getLabelForValue\n }\n};\n\nfunction generateTicks$1(generationOptions, dataRange) {\n const ticks = [];\n const MIN_SPACING = 1e-14;\n const {bounds, step, min, max, precision, count, maxTicks, maxDigits, includeBounds} = generationOptions;\n const unit = step || 1;\n const maxSpaces = maxTicks - 1;\n const {min: rmin, max: rmax} = dataRange;\n const minDefined = !isNullOrUndef(min);\n const maxDefined = !isNullOrUndef(max);\n const countDefined = !isNullOrUndef(count);\n const minSpacing = (rmax - rmin) / (maxDigits + 1);\n let spacing = niceNum((rmax - rmin) / maxSpaces / unit) * unit;\n let factor, niceMin, niceMax, numSpaces;\n if (spacing < MIN_SPACING && !minDefined && !maxDefined) {\n return [{value: rmin}, {value: rmax}];\n }\n numSpaces = Math.ceil(rmax / spacing) - Math.floor(rmin / spacing);\n if (numSpaces > maxSpaces) {\n spacing = niceNum(numSpaces * spacing / maxSpaces / unit) * unit;\n }\n if (!isNullOrUndef(precision)) {\n factor = Math.pow(10, precision);\n spacing = Math.ceil(spacing * factor) / factor;\n }\n if (bounds === 'ticks') {\n niceMin = Math.floor(rmin / spacing) * spacing;\n niceMax = Math.ceil(rmax / spacing) * spacing;\n } else {\n niceMin = rmin;\n niceMax = rmax;\n }\n if (minDefined && maxDefined && step && almostWhole((max - min) / step, spacing / 1000)) {\n numSpaces = Math.round(Math.min((max - min) / spacing, maxTicks));\n spacing = (max - min) / numSpaces;\n niceMin = min;\n niceMax = max;\n } else if (countDefined) {\n niceMin = minDefined ? min : niceMin;\n niceMax = maxDefined ? max : niceMax;\n numSpaces = count - 1;\n spacing = (niceMax - niceMin) / numSpaces;\n } else {\n numSpaces = (niceMax - niceMin) / spacing;\n if (almostEquals(numSpaces, Math.round(numSpaces), spacing / 1000)) {\n numSpaces = Math.round(numSpaces);\n } else {\n numSpaces = Math.ceil(numSpaces);\n }\n }\n const decimalPlaces = Math.max(\n _decimalPlaces(spacing),\n _decimalPlaces(niceMin)\n );\n factor = Math.pow(10, isNullOrUndef(precision) ? decimalPlaces : precision);\n niceMin = Math.round(niceMin * factor) / factor;\n niceMax = Math.round(niceMax * factor) / factor;\n let j = 0;\n if (minDefined) {\n if (includeBounds && niceMin !== min) {\n ticks.push({value: min});\n if (niceMin < min) {\n j++;\n }\n if (almostEquals(Math.round((niceMin + j * spacing) * factor) / factor, min, relativeLabelSize(min, minSpacing, generationOptions))) {\n j++;\n }\n } else if (niceMin < min) {\n j++;\n }\n }\n for (; j < numSpaces; ++j) {\n ticks.push({value: Math.round((niceMin + j * spacing) * factor) / factor});\n }\n if (maxDefined && includeBounds && niceMax !== max) {\n if (ticks.length && almostEquals(ticks[ticks.length - 1].value, max, relativeLabelSize(max, minSpacing, generationOptions))) {\n ticks[ticks.length - 1].value = max;\n } else {\n ticks.push({value: max});\n }\n } else if (!maxDefined || niceMax === max) {\n ticks.push({value: niceMax});\n }\n return ticks;\n}\nfunction relativeLabelSize(value, minSpacing, {horizontal, minRotation}) {\n const rad = toRadians(minRotation);\n const ratio = (horizontal ? Math.sin(rad) : Math.cos(rad)) || 0.001;\n const length = 0.75 * minSpacing * ('' + value).length;\n return Math.min(minSpacing / ratio, length);\n}\nclass LinearScaleBase extends Scale {\n constructor(cfg) {\n super(cfg);\n this.start = undefined;\n this.end = undefined;\n this._startValue = undefined;\n this._endValue = undefined;\n this._valueRange = 0;\n }\n parse(raw, index) {\n if (isNullOrUndef(raw)) {\n return null;\n }\n if ((typeof raw === 'number' || raw instanceof Number) && !isFinite(+raw)) {\n return null;\n }\n return +raw;\n }\n handleTickRangeOptions() {\n const {beginAtZero} = this.options;\n const {minDefined, maxDefined} = this.getUserBounds();\n let {min, max} = this;\n const setMin = v => (min = minDefined ? min : v);\n const setMax = v => (max = maxDefined ? max : v);\n if (beginAtZero) {\n const minSign = sign(min);\n const maxSign = sign(max);\n if (minSign < 0 && maxSign < 0) {\n setMax(0);\n } else if (minSign > 0 && maxSign > 0) {\n setMin(0);\n }\n }\n if (min === max) {\n let offset = 1;\n if (max >= Number.MAX_SAFE_INTEGER || min <= Number.MIN_SAFE_INTEGER) {\n offset = Math.abs(max * 0.05);\n }\n setMax(max + offset);\n if (!beginAtZero) {\n setMin(min - offset);\n }\n }\n this.min = min;\n this.max = max;\n }\n getTickLimit() {\n const tickOpts = this.options.ticks;\n let {maxTicksLimit, stepSize} = tickOpts;\n let maxTicks;\n if (stepSize) {\n maxTicks = Math.ceil(this.max / stepSize) - Math.floor(this.min / stepSize) + 1;\n if (maxTicks > 1000) {\n console.warn(`scales.${this.id}.ticks.stepSize: ${stepSize} would result generating up to ${maxTicks} ticks. Limiting to 1000.`);\n maxTicks = 1000;\n }\n } else {\n maxTicks = this.computeTickLimit();\n maxTicksLimit = maxTicksLimit || 11;\n }\n if (maxTicksLimit) {\n maxTicks = Math.min(maxTicksLimit, maxTicks);\n }\n return maxTicks;\n }\n computeTickLimit() {\n return Number.POSITIVE_INFINITY;\n }\n buildTicks() {\n const opts = this.options;\n const tickOpts = opts.ticks;\n let maxTicks = this.getTickLimit();\n maxTicks = Math.max(2, maxTicks);\n const numericGeneratorOptions = {\n maxTicks,\n bounds: opts.bounds,\n min: opts.min,\n max: opts.max,\n precision: tickOpts.precision,\n step: tickOpts.stepSize,\n count: tickOpts.count,\n maxDigits: this._maxDigits(),\n horizontal: this.isHorizontal(),\n minRotation: tickOpts.minRotation || 0,\n includeBounds: tickOpts.includeBounds !== false\n };\n const dataRange = this._range || this;\n const ticks = generateTicks$1(numericGeneratorOptions, dataRange);\n if (opts.bounds === 'ticks') {\n _setMinAndMaxByKey(ticks, this, 'value');\n }\n if (opts.reverse) {\n ticks.reverse();\n this.start = this.max;\n this.end = this.min;\n } else {\n this.start = this.min;\n this.end = this.max;\n }\n return ticks;\n }\n configure() {\n const ticks = this.ticks;\n let start = this.min;\n let end = this.max;\n super.configure();\n if (this.options.offset && ticks.length) {\n const offset = (end - start) / Math.max(ticks.length - 1, 1) / 2;\n start -= offset;\n end += offset;\n }\n this._startValue = start;\n this._endValue = end;\n this._valueRange = end - start;\n }\n getLabelForValue(value) {\n return formatNumber(value, this.chart.options.locale, this.options.ticks.format);\n }\n}\n\nclass LinearScale extends LinearScaleBase {\n determineDataLimits() {\n const {min, max} = this.getMinMax(true);\n this.min = isNumberFinite(min) ? min : 0;\n this.max = isNumberFinite(max) ? max : 1;\n this.handleTickRangeOptions();\n }\n computeTickLimit() {\n const horizontal = this.isHorizontal();\n const length = horizontal ? this.width : this.height;\n const minRotation = toRadians(this.options.ticks.minRotation);\n const ratio = (horizontal ? Math.sin(minRotation) : Math.cos(minRotation)) || 0.001;\n const tickFont = this._resolveTickFontOptions(0);\n return Math.ceil(length / Math.min(40, tickFont.lineHeight / ratio));\n }\n getPixelForValue(value) {\n return value === null ? NaN : this.getPixelForDecimal((value - this._startValue) / this._valueRange);\n }\n getValueForPixel(pixel) {\n return this._startValue + this.getDecimalForPixel(pixel) * this._valueRange;\n }\n}\nLinearScale.id = 'linear';\nLinearScale.defaults = {\n ticks: {\n callback: Ticks.formatters.numeric\n }\n};\n\nfunction isMajor(tickVal) {\n const remain = tickVal / (Math.pow(10, Math.floor(log10(tickVal))));\n return remain === 1;\n}\nfunction generateTicks(generationOptions, dataRange) {\n const endExp = Math.floor(log10(dataRange.max));\n const endSignificand = Math.ceil(dataRange.max / Math.pow(10, endExp));\n const ticks = [];\n let tickVal = finiteOrDefault(generationOptions.min, Math.pow(10, Math.floor(log10(dataRange.min))));\n let exp = Math.floor(log10(tickVal));\n let significand = Math.floor(tickVal / Math.pow(10, exp));\n let precision = exp < 0 ? Math.pow(10, Math.abs(exp)) : 1;\n do {\n ticks.push({value: tickVal, major: isMajor(tickVal)});\n ++significand;\n if (significand === 10) {\n significand = 1;\n ++exp;\n precision = exp >= 0 ? 1 : precision;\n }\n tickVal = Math.round(significand * Math.pow(10, exp) * precision) / precision;\n } while (exp < endExp || (exp === endExp && significand < endSignificand));\n const lastTick = finiteOrDefault(generationOptions.max, tickVal);\n ticks.push({value: lastTick, major: isMajor(tickVal)});\n return ticks;\n}\nclass LogarithmicScale extends Scale {\n constructor(cfg) {\n super(cfg);\n this.start = undefined;\n this.end = undefined;\n this._startValue = undefined;\n this._valueRange = 0;\n }\n parse(raw, index) {\n const value = LinearScaleBase.prototype.parse.apply(this, [raw, index]);\n if (value === 0) {\n this._zero = true;\n return undefined;\n }\n return isNumberFinite(value) && value > 0 ? value : null;\n }\n determineDataLimits() {\n const {min, max} = this.getMinMax(true);\n this.min = isNumberFinite(min) ? Math.max(0, min) : null;\n this.max = isNumberFinite(max) ? Math.max(0, max) : null;\n if (this.options.beginAtZero) {\n this._zero = true;\n }\n this.handleTickRangeOptions();\n }\n handleTickRangeOptions() {\n const {minDefined, maxDefined} = this.getUserBounds();\n let min = this.min;\n let max = this.max;\n const setMin = v => (min = minDefined ? min : v);\n const setMax = v => (max = maxDefined ? max : v);\n const exp = (v, m) => Math.pow(10, Math.floor(log10(v)) + m);\n if (min === max) {\n if (min <= 0) {\n setMin(1);\n setMax(10);\n } else {\n setMin(exp(min, -1));\n setMax(exp(max, +1));\n }\n }\n if (min <= 0) {\n setMin(exp(max, -1));\n }\n if (max <= 0) {\n setMax(exp(min, +1));\n }\n if (this._zero && this.min !== this._suggestedMin && min === exp(this.min, 0)) {\n setMin(exp(min, -1));\n }\n this.min = min;\n this.max = max;\n }\n buildTicks() {\n const opts = this.options;\n const generationOptions = {\n min: this._userMin,\n max: this._userMax\n };\n const ticks = generateTicks(generationOptions, this);\n if (opts.bounds === 'ticks') {\n _setMinAndMaxByKey(ticks, this, 'value');\n }\n if (opts.reverse) {\n ticks.reverse();\n this.start = this.max;\n this.end = this.min;\n } else {\n this.start = this.min;\n this.end = this.max;\n }\n return ticks;\n }\n getLabelForValue(value) {\n return value === undefined\n ? '0'\n : formatNumber(value, this.chart.options.locale, this.options.ticks.format);\n }\n configure() {\n const start = this.min;\n super.configure();\n this._startValue = log10(start);\n this._valueRange = log10(this.max) - log10(start);\n }\n getPixelForValue(value) {\n if (value === undefined || value === 0) {\n value = this.min;\n }\n if (value === null || isNaN(value)) {\n return NaN;\n }\n return this.getPixelForDecimal(value === this.min\n ? 0\n : (log10(value) - this._startValue) / this._valueRange);\n }\n getValueForPixel(pixel) {\n const decimal = this.getDecimalForPixel(pixel);\n return Math.pow(10, this._startValue + decimal * this._valueRange);\n }\n}\nLogarithmicScale.id = 'logarithmic';\nLogarithmicScale.defaults = {\n ticks: {\n callback: Ticks.formatters.logarithmic,\n major: {\n enabled: true\n }\n }\n};\n\nfunction getTickBackdropHeight(opts) {\n const tickOpts = opts.ticks;\n if (tickOpts.display && opts.display) {\n const padding = toPadding(tickOpts.backdropPadding);\n return valueOrDefault(tickOpts.font && tickOpts.font.size, defaults.font.size) + padding.height;\n }\n return 0;\n}\nfunction measureLabelSize(ctx, font, label) {\n label = isArray(label) ? label : [label];\n return {\n w: _longestText(ctx, font.string, label),\n h: label.length * font.lineHeight\n };\n}\nfunction determineLimits(angle, pos, size, min, max) {\n if (angle === min || angle === max) {\n return {\n start: pos - (size / 2),\n end: pos + (size / 2)\n };\n } else if (angle < min || angle > max) {\n return {\n start: pos - size,\n end: pos\n };\n }\n return {\n start: pos,\n end: pos + size\n };\n}\nfunction fitWithPointLabels(scale) {\n const orig = {\n l: scale.left + scale._padding.left,\n r: scale.right - scale._padding.right,\n t: scale.top + scale._padding.top,\n b: scale.bottom - scale._padding.bottom\n };\n const limits = Object.assign({}, orig);\n const labelSizes = [];\n const padding = [];\n const valueCount = scale._pointLabels.length;\n const pointLabelOpts = scale.options.pointLabels;\n const additionalAngle = pointLabelOpts.centerPointLabels ? PI / valueCount : 0;\n for (let i = 0; i < valueCount; i++) {\n const opts = pointLabelOpts.setContext(scale.getPointLabelContext(i));\n padding[i] = opts.padding;\n const pointPosition = scale.getPointPosition(i, scale.drawingArea + padding[i], additionalAngle);\n const plFont = toFont(opts.font);\n const textSize = measureLabelSize(scale.ctx, plFont, scale._pointLabels[i]);\n labelSizes[i] = textSize;\n const angleRadians = _normalizeAngle(scale.getIndexAngle(i) + additionalAngle);\n const angle = Math.round(toDegrees(angleRadians));\n const hLimits = determineLimits(angle, pointPosition.x, textSize.w, 0, 180);\n const vLimits = determineLimits(angle, pointPosition.y, textSize.h, 90, 270);\n updateLimits(limits, orig, angleRadians, hLimits, vLimits);\n }\n scale.setCenterPoint(\n orig.l - limits.l,\n limits.r - orig.r,\n orig.t - limits.t,\n limits.b - orig.b\n );\n scale._pointLabelItems = buildPointLabelItems(scale, labelSizes, padding);\n}\nfunction updateLimits(limits, orig, angle, hLimits, vLimits) {\n const sin = Math.abs(Math.sin(angle));\n const cos = Math.abs(Math.cos(angle));\n let x = 0;\n let y = 0;\n if (hLimits.start < orig.l) {\n x = (orig.l - hLimits.start) / sin;\n limits.l = Math.min(limits.l, orig.l - x);\n } else if (hLimits.end > orig.r) {\n x = (hLimits.end - orig.r) / sin;\n limits.r = Math.max(limits.r, orig.r + x);\n }\n if (vLimits.start < orig.t) {\n y = (orig.t - vLimits.start) / cos;\n limits.t = Math.min(limits.t, orig.t - y);\n } else if (vLimits.end > orig.b) {\n y = (vLimits.end - orig.b) / cos;\n limits.b = Math.max(limits.b, orig.b + y);\n }\n}\nfunction buildPointLabelItems(scale, labelSizes, padding) {\n const items = [];\n const valueCount = scale._pointLabels.length;\n const opts = scale.options;\n const extra = getTickBackdropHeight(opts) / 2;\n const outerDistance = scale.drawingArea;\n const additionalAngle = opts.pointLabels.centerPointLabels ? PI / valueCount : 0;\n for (let i = 0; i < valueCount; i++) {\n const pointLabelPosition = scale.getPointPosition(i, outerDistance + extra + padding[i], additionalAngle);\n const angle = Math.round(toDegrees(_normalizeAngle(pointLabelPosition.angle + HALF_PI)));\n const size = labelSizes[i];\n const y = yForAngle(pointLabelPosition.y, size.h, angle);\n const textAlign = getTextAlignForAngle(angle);\n const left = leftForTextAlign(pointLabelPosition.x, size.w, textAlign);\n items.push({\n x: pointLabelPosition.x,\n y,\n textAlign,\n left,\n top: y,\n right: left + size.w,\n bottom: y + size.h\n });\n }\n return items;\n}\nfunction getTextAlignForAngle(angle) {\n if (angle === 0 || angle === 180) {\n return 'center';\n } else if (angle < 180) {\n return 'left';\n }\n return 'right';\n}\nfunction leftForTextAlign(x, w, align) {\n if (align === 'right') {\n x -= w;\n } else if (align === 'center') {\n x -= (w / 2);\n }\n return x;\n}\nfunction yForAngle(y, h, angle) {\n if (angle === 90 || angle === 270) {\n y -= (h / 2);\n } else if (angle > 270 || angle < 90) {\n y -= h;\n }\n return y;\n}\nfunction drawPointLabels(scale, labelCount) {\n const {ctx, options: {pointLabels}} = scale;\n for (let i = labelCount - 1; i >= 0; i--) {\n const optsAtIndex = pointLabels.setContext(scale.getPointLabelContext(i));\n const plFont = toFont(optsAtIndex.font);\n const {x, y, textAlign, left, top, right, bottom} = scale._pointLabelItems[i];\n const {backdropColor} = optsAtIndex;\n if (!isNullOrUndef(backdropColor)) {\n const borderRadius = toTRBLCorners(optsAtIndex.borderRadius);\n const padding = toPadding(optsAtIndex.backdropPadding);\n ctx.fillStyle = backdropColor;\n const backdropLeft = left - padding.left;\n const backdropTop = top - padding.top;\n const backdropWidth = right - left + padding.width;\n const backdropHeight = bottom - top + padding.height;\n if (Object.values(borderRadius).some(v => v !== 0)) {\n ctx.beginPath();\n addRoundedRectPath(ctx, {\n x: backdropLeft,\n y: backdropTop,\n w: backdropWidth,\n h: backdropHeight,\n radius: borderRadius,\n });\n ctx.fill();\n } else {\n ctx.fillRect(backdropLeft, backdropTop, backdropWidth, backdropHeight);\n }\n }\n renderText(\n ctx,\n scale._pointLabels[i],\n x,\n y + (plFont.lineHeight / 2),\n plFont,\n {\n color: optsAtIndex.color,\n textAlign: textAlign,\n textBaseline: 'middle'\n }\n );\n }\n}\nfunction pathRadiusLine(scale, radius, circular, labelCount) {\n const {ctx} = scale;\n if (circular) {\n ctx.arc(scale.xCenter, scale.yCenter, radius, 0, TAU);\n } else {\n let pointPosition = scale.getPointPosition(0, radius);\n ctx.moveTo(pointPosition.x, pointPosition.y);\n for (let i = 1; i < labelCount; i++) {\n pointPosition = scale.getPointPosition(i, radius);\n ctx.lineTo(pointPosition.x, pointPosition.y);\n }\n }\n}\nfunction drawRadiusLine(scale, gridLineOpts, radius, labelCount) {\n const ctx = scale.ctx;\n const circular = gridLineOpts.circular;\n const {color, lineWidth} = gridLineOpts;\n if ((!circular && !labelCount) || !color || !lineWidth || radius < 0) {\n return;\n }\n ctx.save();\n ctx.strokeStyle = color;\n ctx.lineWidth = lineWidth;\n ctx.setLineDash(gridLineOpts.borderDash);\n ctx.lineDashOffset = gridLineOpts.borderDashOffset;\n ctx.beginPath();\n pathRadiusLine(scale, radius, circular, labelCount);\n ctx.closePath();\n ctx.stroke();\n ctx.restore();\n}\nfunction createPointLabelContext(parent, index, label) {\n return createContext(parent, {\n label,\n index,\n type: 'pointLabel'\n });\n}\nclass RadialLinearScale extends LinearScaleBase {\n constructor(cfg) {\n super(cfg);\n this.xCenter = undefined;\n this.yCenter = undefined;\n this.drawingArea = undefined;\n this._pointLabels = [];\n this._pointLabelItems = [];\n }\n setDimensions() {\n const padding = this._padding = toPadding(getTickBackdropHeight(this.options) / 2);\n const w = this.width = this.maxWidth - padding.width;\n const h = this.height = this.maxHeight - padding.height;\n this.xCenter = Math.floor(this.left + w / 2 + padding.left);\n this.yCenter = Math.floor(this.top + h / 2 + padding.top);\n this.drawingArea = Math.floor(Math.min(w, h) / 2);\n }\n determineDataLimits() {\n const {min, max} = this.getMinMax(false);\n this.min = isNumberFinite(min) && !isNaN(min) ? min : 0;\n this.max = isNumberFinite(max) && !isNaN(max) ? max : 0;\n this.handleTickRangeOptions();\n }\n computeTickLimit() {\n return Math.ceil(this.drawingArea / getTickBackdropHeight(this.options));\n }\n generateTickLabels(ticks) {\n LinearScaleBase.prototype.generateTickLabels.call(this, ticks);\n this._pointLabels = this.getLabels()\n .map((value, index) => {\n const label = callback(this.options.pointLabels.callback, [value, index], this);\n return label || label === 0 ? label : '';\n })\n .filter((v, i) => this.chart.getDataVisibility(i));\n }\n fit() {\n const opts = this.options;\n if (opts.display && opts.pointLabels.display) {\n fitWithPointLabels(this);\n } else {\n this.setCenterPoint(0, 0, 0, 0);\n }\n }\n setCenterPoint(leftMovement, rightMovement, topMovement, bottomMovement) {\n this.xCenter += Math.floor((leftMovement - rightMovement) / 2);\n this.yCenter += Math.floor((topMovement - bottomMovement) / 2);\n this.drawingArea -= Math.min(this.drawingArea / 2, Math.max(leftMovement, rightMovement, topMovement, bottomMovement));\n }\n getIndexAngle(index) {\n const angleMultiplier = TAU / (this._pointLabels.length || 1);\n const startAngle = this.options.startAngle || 0;\n return _normalizeAngle(index * angleMultiplier + toRadians(startAngle));\n }\n getDistanceFromCenterForValue(value) {\n if (isNullOrUndef(value)) {\n return NaN;\n }\n const scalingFactor = this.drawingArea / (this.max - this.min);\n if (this.options.reverse) {\n return (this.max - value) * scalingFactor;\n }\n return (value - this.min) * scalingFactor;\n }\n getValueForDistanceFromCenter(distance) {\n if (isNullOrUndef(distance)) {\n return NaN;\n }\n const scaledDistance = distance / (this.drawingArea / (this.max - this.min));\n return this.options.reverse ? this.max - scaledDistance : this.min + scaledDistance;\n }\n getPointLabelContext(index) {\n const pointLabels = this._pointLabels || [];\n if (index >= 0 && index < pointLabels.length) {\n const pointLabel = pointLabels[index];\n return createPointLabelContext(this.getContext(), index, pointLabel);\n }\n }\n getPointPosition(index, distanceFromCenter, additionalAngle = 0) {\n const angle = this.getIndexAngle(index) - HALF_PI + additionalAngle;\n return {\n x: Math.cos(angle) * distanceFromCenter + this.xCenter,\n y: Math.sin(angle) * distanceFromCenter + this.yCenter,\n angle\n };\n }\n getPointPositionForValue(index, value) {\n return this.getPointPosition(index, this.getDistanceFromCenterForValue(value));\n }\n getBasePosition(index) {\n return this.getPointPositionForValue(index || 0, this.getBaseValue());\n }\n getPointLabelPosition(index) {\n const {left, top, right, bottom} = this._pointLabelItems[index];\n return {\n left,\n top,\n right,\n bottom,\n };\n }\n drawBackground() {\n const {backgroundColor, grid: {circular}} = this.options;\n if (backgroundColor) {\n const ctx = this.ctx;\n ctx.save();\n ctx.beginPath();\n pathRadiusLine(this, this.getDistanceFromCenterForValue(this._endValue), circular, this._pointLabels.length);\n ctx.closePath();\n ctx.fillStyle = backgroundColor;\n ctx.fill();\n ctx.restore();\n }\n }\n drawGrid() {\n const ctx = this.ctx;\n const opts = this.options;\n const {angleLines, grid} = opts;\n const labelCount = this._pointLabels.length;\n let i, offset, position;\n if (opts.pointLabels.display) {\n drawPointLabels(this, labelCount);\n }\n if (grid.display) {\n this.ticks.forEach((tick, index) => {\n if (index !== 0) {\n offset = this.getDistanceFromCenterForValue(tick.value);\n const optsAtIndex = grid.setContext(this.getContext(index - 1));\n drawRadiusLine(this, optsAtIndex, offset, labelCount);\n }\n });\n }\n if (angleLines.display) {\n ctx.save();\n for (i = labelCount - 1; i >= 0; i--) {\n const optsAtIndex = angleLines.setContext(this.getPointLabelContext(i));\n const {color, lineWidth} = optsAtIndex;\n if (!lineWidth || !color) {\n continue;\n }\n ctx.lineWidth = lineWidth;\n ctx.strokeStyle = color;\n ctx.setLineDash(optsAtIndex.borderDash);\n ctx.lineDashOffset = optsAtIndex.borderDashOffset;\n offset = this.getDistanceFromCenterForValue(opts.ticks.reverse ? this.min : this.max);\n position = this.getPointPosition(i, offset);\n ctx.beginPath();\n ctx.moveTo(this.xCenter, this.yCenter);\n ctx.lineTo(position.x, position.y);\n ctx.stroke();\n }\n ctx.restore();\n }\n }\n drawBorder() {}\n drawLabels() {\n const ctx = this.ctx;\n const opts = this.options;\n const tickOpts = opts.ticks;\n if (!tickOpts.display) {\n return;\n }\n const startAngle = this.getIndexAngle(0);\n let offset, width;\n ctx.save();\n ctx.translate(this.xCenter, this.yCenter);\n ctx.rotate(startAngle);\n ctx.textAlign = 'center';\n ctx.textBaseline = 'middle';\n this.ticks.forEach((tick, index) => {\n if (index === 0 && !opts.reverse) {\n return;\n }\n const optsAtIndex = tickOpts.setContext(this.getContext(index));\n const tickFont = toFont(optsAtIndex.font);\n offset = this.getDistanceFromCenterForValue(this.ticks[index].value);\n if (optsAtIndex.showLabelBackdrop) {\n ctx.font = tickFont.string;\n width = ctx.measureText(tick.label).width;\n ctx.fillStyle = optsAtIndex.backdropColor;\n const padding = toPadding(optsAtIndex.backdropPadding);\n ctx.fillRect(\n -width / 2 - padding.left,\n -offset - tickFont.size / 2 - padding.top,\n width + padding.width,\n tickFont.size + padding.height\n );\n }\n renderText(ctx, tick.label, 0, -offset, tickFont, {\n color: optsAtIndex.color,\n });\n });\n ctx.restore();\n }\n drawTitle() {}\n}\nRadialLinearScale.id = 'radialLinear';\nRadialLinearScale.defaults = {\n display: true,\n animate: true,\n position: 'chartArea',\n angleLines: {\n display: true,\n lineWidth: 1,\n borderDash: [],\n borderDashOffset: 0.0\n },\n grid: {\n circular: false\n },\n startAngle: 0,\n ticks: {\n showLabelBackdrop: true,\n callback: Ticks.formatters.numeric\n },\n pointLabels: {\n backdropColor: undefined,\n backdropPadding: 2,\n display: true,\n font: {\n size: 10\n },\n callback(label) {\n return label;\n },\n padding: 5,\n centerPointLabels: false\n }\n};\nRadialLinearScale.defaultRoutes = {\n 'angleLines.color': 'borderColor',\n 'pointLabels.color': 'color',\n 'ticks.color': 'color'\n};\nRadialLinearScale.descriptors = {\n angleLines: {\n _fallback: 'grid'\n }\n};\n\nconst INTERVALS = {\n millisecond: {common: true, size: 1, steps: 1000},\n second: {common: true, size: 1000, steps: 60},\n minute: {common: true, size: 60000, steps: 60},\n hour: {common: true, size: 3600000, steps: 24},\n day: {common: true, size: 86400000, steps: 30},\n week: {common: false, size: 604800000, steps: 4},\n month: {common: true, size: 2.628e9, steps: 12},\n quarter: {common: false, size: 7.884e9, steps: 4},\n year: {common: true, size: 3.154e10}\n};\nconst UNITS = (Object.keys(INTERVALS));\nfunction sorter(a, b) {\n return a - b;\n}\nfunction parse(scale, input) {\n if (isNullOrUndef(input)) {\n return null;\n }\n const adapter = scale._adapter;\n const {parser, round, isoWeekday} = scale._parseOpts;\n let value = input;\n if (typeof parser === 'function') {\n value = parser(value);\n }\n if (!isNumberFinite(value)) {\n value = typeof parser === 'string'\n ? adapter.parse(value, parser)\n : adapter.parse(value);\n }\n if (value === null) {\n return null;\n }\n if (round) {\n value = round === 'week' && (isNumber(isoWeekday) || isoWeekday === true)\n ? adapter.startOf(value, 'isoWeek', isoWeekday)\n : adapter.startOf(value, round);\n }\n return +value;\n}\nfunction determineUnitForAutoTicks(minUnit, min, max, capacity) {\n const ilen = UNITS.length;\n for (let i = UNITS.indexOf(minUnit); i < ilen - 1; ++i) {\n const interval = INTERVALS[UNITS[i]];\n const factor = interval.steps ? interval.steps : Number.MAX_SAFE_INTEGER;\n if (interval.common && Math.ceil((max - min) / (factor * interval.size)) <= capacity) {\n return UNITS[i];\n }\n }\n return UNITS[ilen - 1];\n}\nfunction determineUnitForFormatting(scale, numTicks, minUnit, min, max) {\n for (let i = UNITS.length - 1; i >= UNITS.indexOf(minUnit); i--) {\n const unit = UNITS[i];\n if (INTERVALS[unit].common && scale._adapter.diff(max, min, unit) >= numTicks - 1) {\n return unit;\n }\n }\n return UNITS[minUnit ? UNITS.indexOf(minUnit) : 0];\n}\nfunction determineMajorUnit(unit) {\n for (let i = UNITS.indexOf(unit) + 1, ilen = UNITS.length; i < ilen; ++i) {\n if (INTERVALS[UNITS[i]].common) {\n return UNITS[i];\n }\n }\n}\nfunction addTick(ticks, time, timestamps) {\n if (!timestamps) {\n ticks[time] = true;\n } else if (timestamps.length) {\n const {lo, hi} = _lookup(timestamps, time);\n const timestamp = timestamps[lo] >= time ? timestamps[lo] : timestamps[hi];\n ticks[timestamp] = true;\n }\n}\nfunction setMajorTicks(scale, ticks, map, majorUnit) {\n const adapter = scale._adapter;\n const first = +adapter.startOf(ticks[0].value, majorUnit);\n const last = ticks[ticks.length - 1].value;\n let major, index;\n for (major = first; major <= last; major = +adapter.add(major, 1, majorUnit)) {\n index = map[major];\n if (index >= 0) {\n ticks[index].major = true;\n }\n }\n return ticks;\n}\nfunction ticksFromTimestamps(scale, values, majorUnit) {\n const ticks = [];\n const map = {};\n const ilen = values.length;\n let i, value;\n for (i = 0; i < ilen; ++i) {\n value = values[i];\n map[value] = i;\n ticks.push({\n value,\n major: false\n });\n }\n return (ilen === 0 || !majorUnit) ? ticks : setMajorTicks(scale, ticks, map, majorUnit);\n}\nclass TimeScale extends Scale {\n constructor(props) {\n super(props);\n this._cache = {\n data: [],\n labels: [],\n all: []\n };\n this._unit = 'day';\n this._majorUnit = undefined;\n this._offsets = {};\n this._normalized = false;\n this._parseOpts = undefined;\n }\n init(scaleOpts, opts) {\n const time = scaleOpts.time || (scaleOpts.time = {});\n const adapter = this._adapter = new adapters._date(scaleOpts.adapters.date);\n adapter.init(opts);\n mergeIf(time.displayFormats, adapter.formats());\n this._parseOpts = {\n parser: time.parser,\n round: time.round,\n isoWeekday: time.isoWeekday\n };\n super.init(scaleOpts);\n this._normalized = opts.normalized;\n }\n parse(raw, index) {\n if (raw === undefined) {\n return null;\n }\n return parse(this, raw);\n }\n beforeLayout() {\n super.beforeLayout();\n this._cache = {\n data: [],\n labels: [],\n all: []\n };\n }\n determineDataLimits() {\n const options = this.options;\n const adapter = this._adapter;\n const unit = options.time.unit || 'day';\n let {min, max, minDefined, maxDefined} = this.getUserBounds();\n function _applyBounds(bounds) {\n if (!minDefined && !isNaN(bounds.min)) {\n min = Math.min(min, bounds.min);\n }\n if (!maxDefined && !isNaN(bounds.max)) {\n max = Math.max(max, bounds.max);\n }\n }\n if (!minDefined || !maxDefined) {\n _applyBounds(this._getLabelBounds());\n if (options.bounds !== 'ticks' || options.ticks.source !== 'labels') {\n _applyBounds(this.getMinMax(false));\n }\n }\n min = isNumberFinite(min) && !isNaN(min) ? min : +adapter.startOf(Date.now(), unit);\n max = isNumberFinite(max) && !isNaN(max) ? max : +adapter.endOf(Date.now(), unit) + 1;\n this.min = Math.min(min, max - 1);\n this.max = Math.max(min + 1, max);\n }\n _getLabelBounds() {\n const arr = this.getLabelTimestamps();\n let min = Number.POSITIVE_INFINITY;\n let max = Number.NEGATIVE_INFINITY;\n if (arr.length) {\n min = arr[0];\n max = arr[arr.length - 1];\n }\n return {min, max};\n }\n buildTicks() {\n const options = this.options;\n const timeOpts = options.time;\n const tickOpts = options.ticks;\n const timestamps = tickOpts.source === 'labels' ? this.getLabelTimestamps() : this._generate();\n if (options.bounds === 'ticks' && timestamps.length) {\n this.min = this._userMin || timestamps[0];\n this.max = this._userMax || timestamps[timestamps.length - 1];\n }\n const min = this.min;\n const max = this.max;\n const ticks = _filterBetween(timestamps, min, max);\n this._unit = timeOpts.unit || (tickOpts.autoSkip\n ? determineUnitForAutoTicks(timeOpts.minUnit, this.min, this.max, this._getLabelCapacity(min))\n : determineUnitForFormatting(this, ticks.length, timeOpts.minUnit, this.min, this.max));\n this._majorUnit = !tickOpts.major.enabled || this._unit === 'year' ? undefined\n : determineMajorUnit(this._unit);\n this.initOffsets(timestamps);\n if (options.reverse) {\n ticks.reverse();\n }\n return ticksFromTimestamps(this, ticks, this._majorUnit);\n }\n afterAutoSkip() {\n if (this.options.offsetAfterAutoskip) {\n this.initOffsets(this.ticks.map(tick => +tick.value));\n }\n }\n initOffsets(timestamps) {\n let start = 0;\n let end = 0;\n let first, last;\n if (this.options.offset && timestamps.length) {\n first = this.getDecimalForValue(timestamps[0]);\n if (timestamps.length === 1) {\n start = 1 - first;\n } else {\n start = (this.getDecimalForValue(timestamps[1]) - first) / 2;\n }\n last = this.getDecimalForValue(timestamps[timestamps.length - 1]);\n if (timestamps.length === 1) {\n end = last;\n } else {\n end = (last - this.getDecimalForValue(timestamps[timestamps.length - 2])) / 2;\n }\n }\n const limit = timestamps.length < 3 ? 0.5 : 0.25;\n start = _limitValue(start, 0, limit);\n end = _limitValue(end, 0, limit);\n this._offsets = {start, end, factor: 1 / (start + 1 + end)};\n }\n _generate() {\n const adapter = this._adapter;\n const min = this.min;\n const max = this.max;\n const options = this.options;\n const timeOpts = options.time;\n const minor = timeOpts.unit || determineUnitForAutoTicks(timeOpts.minUnit, min, max, this._getLabelCapacity(min));\n const stepSize = valueOrDefault(timeOpts.stepSize, 1);\n const weekday = minor === 'week' ? timeOpts.isoWeekday : false;\n const hasWeekday = isNumber(weekday) || weekday === true;\n const ticks = {};\n let first = min;\n let time, count;\n if (hasWeekday) {\n first = +adapter.startOf(first, 'isoWeek', weekday);\n }\n first = +adapter.startOf(first, hasWeekday ? 'day' : minor);\n if (adapter.diff(max, min, minor) > 100000 * stepSize) {\n throw new Error(min + ' and ' + max + ' are too far apart with stepSize of ' + stepSize + ' ' + minor);\n }\n const timestamps = options.ticks.source === 'data' && this.getDataTimestamps();\n for (time = first, count = 0; time < max; time = +adapter.add(time, stepSize, minor), count++) {\n addTick(ticks, time, timestamps);\n }\n if (time === max || options.bounds === 'ticks' || count === 1) {\n addTick(ticks, time, timestamps);\n }\n return Object.keys(ticks).sort((a, b) => a - b).map(x => +x);\n }\n getLabelForValue(value) {\n const adapter = this._adapter;\n const timeOpts = this.options.time;\n if (timeOpts.tooltipFormat) {\n return adapter.format(value, timeOpts.tooltipFormat);\n }\n return adapter.format(value, timeOpts.displayFormats.datetime);\n }\n _tickFormatFunction(time, index, ticks, format) {\n const options = this.options;\n const formats = options.time.displayFormats;\n const unit = this._unit;\n const majorUnit = this._majorUnit;\n const minorFormat = unit && formats[unit];\n const majorFormat = majorUnit && formats[majorUnit];\n const tick = ticks[index];\n const major = majorUnit && majorFormat && tick && tick.major;\n const label = this._adapter.format(time, format || (major ? majorFormat : minorFormat));\n const formatter = options.ticks.callback;\n return formatter ? callback(formatter, [label, index, ticks], this) : label;\n }\n generateTickLabels(ticks) {\n let i, ilen, tick;\n for (i = 0, ilen = ticks.length; i < ilen; ++i) {\n tick = ticks[i];\n tick.label = this._tickFormatFunction(tick.value, i, ticks);\n }\n }\n getDecimalForValue(value) {\n return value === null ? NaN : (value - this.min) / (this.max - this.min);\n }\n getPixelForValue(value) {\n const offsets = this._offsets;\n const pos = this.getDecimalForValue(value);\n return this.getPixelForDecimal((offsets.start + pos) * offsets.factor);\n }\n getValueForPixel(pixel) {\n const offsets = this._offsets;\n const pos = this.getDecimalForPixel(pixel) / offsets.factor - offsets.end;\n return this.min + pos * (this.max - this.min);\n }\n _getLabelSize(label) {\n const ticksOpts = this.options.ticks;\n const tickLabelWidth = this.ctx.measureText(label).width;\n const angle = toRadians(this.isHorizontal() ? ticksOpts.maxRotation : ticksOpts.minRotation);\n const cosRotation = Math.cos(angle);\n const sinRotation = Math.sin(angle);\n const tickFontSize = this._resolveTickFontOptions(0).size;\n return {\n w: (tickLabelWidth * cosRotation) + (tickFontSize * sinRotation),\n h: (tickLabelWidth * sinRotation) + (tickFontSize * cosRotation)\n };\n }\n _getLabelCapacity(exampleTime) {\n const timeOpts = this.options.time;\n const displayFormats = timeOpts.displayFormats;\n const format = displayFormats[timeOpts.unit] || displayFormats.millisecond;\n const exampleLabel = this._tickFormatFunction(exampleTime, 0, ticksFromTimestamps(this, [exampleTime], this._majorUnit), format);\n const size = this._getLabelSize(exampleLabel);\n const capacity = Math.floor(this.isHorizontal() ? this.width / size.w : this.height / size.h) - 1;\n return capacity > 0 ? capacity : 1;\n }\n getDataTimestamps() {\n let timestamps = this._cache.data || [];\n let i, ilen;\n if (timestamps.length) {\n return timestamps;\n }\n const metas = this.getMatchingVisibleMetas();\n if (this._normalized && metas.length) {\n return (this._cache.data = metas[0].controller.getAllParsedValues(this));\n }\n for (i = 0, ilen = metas.length; i < ilen; ++i) {\n timestamps = timestamps.concat(metas[i].controller.getAllParsedValues(this));\n }\n return (this._cache.data = this.normalize(timestamps));\n }\n getLabelTimestamps() {\n const timestamps = this._cache.labels || [];\n let i, ilen;\n if (timestamps.length) {\n return timestamps;\n }\n const labels = this.getLabels();\n for (i = 0, ilen = labels.length; i < ilen; ++i) {\n timestamps.push(parse(this, labels[i]));\n }\n return (this._cache.labels = this._normalized ? timestamps : this.normalize(timestamps));\n }\n normalize(values) {\n return _arrayUnique(values.sort(sorter));\n }\n}\nTimeScale.id = 'time';\nTimeScale.defaults = {\n bounds: 'data',\n adapters: {},\n time: {\n parser: false,\n unit: false,\n round: false,\n isoWeekday: false,\n minUnit: 'millisecond',\n displayFormats: {}\n },\n ticks: {\n source: 'auto',\n major: {\n enabled: false\n }\n }\n};\n\nfunction interpolate(table, val, reverse) {\n let lo = 0;\n let hi = table.length - 1;\n let prevSource, nextSource, prevTarget, nextTarget;\n if (reverse) {\n if (val >= table[lo].pos && val <= table[hi].pos) {\n ({lo, hi} = _lookupByKey(table, 'pos', val));\n }\n ({pos: prevSource, time: prevTarget} = table[lo]);\n ({pos: nextSource, time: nextTarget} = table[hi]);\n } else {\n if (val >= table[lo].time && val <= table[hi].time) {\n ({lo, hi} = _lookupByKey(table, 'time', val));\n }\n ({time: prevSource, pos: prevTarget} = table[lo]);\n ({time: nextSource, pos: nextTarget} = table[hi]);\n }\n const span = nextSource - prevSource;\n return span ? prevTarget + (nextTarget - prevTarget) * (val - prevSource) / span : prevTarget;\n}\nclass TimeSeriesScale extends TimeScale {\n constructor(props) {\n super(props);\n this._table = [];\n this._minPos = undefined;\n this._tableRange = undefined;\n }\n initOffsets() {\n const timestamps = this._getTimestampsForTable();\n const table = this._table = this.buildLookupTable(timestamps);\n this._minPos = interpolate(table, this.min);\n this._tableRange = interpolate(table, this.max) - this._minPos;\n super.initOffsets(timestamps);\n }\n buildLookupTable(timestamps) {\n const {min, max} = this;\n const items = [];\n const table = [];\n let i, ilen, prev, curr, next;\n for (i = 0, ilen = timestamps.length; i < ilen; ++i) {\n curr = timestamps[i];\n if (curr >= min && curr <= max) {\n items.push(curr);\n }\n }\n if (items.length < 2) {\n return [\n {time: min, pos: 0},\n {time: max, pos: 1}\n ];\n }\n for (i = 0, ilen = items.length; i < ilen; ++i) {\n next = items[i + 1];\n prev = items[i - 1];\n curr = items[i];\n if (Math.round((next + prev) / 2) !== curr) {\n table.push({time: curr, pos: i / (ilen - 1)});\n }\n }\n return table;\n }\n _getTimestampsForTable() {\n let timestamps = this._cache.all || [];\n if (timestamps.length) {\n return timestamps;\n }\n const data = this.getDataTimestamps();\n const label = this.getLabelTimestamps();\n if (data.length && label.length) {\n timestamps = this.normalize(data.concat(label));\n } else {\n timestamps = data.length ? data : label;\n }\n timestamps = this._cache.all = timestamps;\n return timestamps;\n }\n getDecimalForValue(value) {\n return (interpolate(this._table, value) - this._minPos) / this._tableRange;\n }\n getValueForPixel(pixel) {\n const offsets = this._offsets;\n const decimal = this.getDecimalForPixel(pixel) / offsets.factor - offsets.end;\n return interpolate(this._table, decimal * this._tableRange + this._minPos, true);\n }\n}\nTimeSeriesScale.id = 'timeseries';\nTimeSeriesScale.defaults = TimeScale.defaults;\n\nvar scales = /*#__PURE__*/Object.freeze({\n__proto__: null,\nCategoryScale: CategoryScale,\nLinearScale: LinearScale,\nLogarithmicScale: LogarithmicScale,\nRadialLinearScale: RadialLinearScale,\nTimeScale: TimeScale,\nTimeSeriesScale: TimeSeriesScale\n});\n\nconst registerables = [\n controllers,\n elements,\n plugins,\n scales,\n];\n\nexport { Animation, Animations, ArcElement, BarController, BarElement, BasePlatform, BasicPlatform, BubbleController, CategoryScale, Chart, DatasetController, plugin_decimation as Decimation, DomPlatform, DoughnutController, Element, index as Filler, Interaction, plugin_legend as Legend, LineController, LineElement, LinearScale, LogarithmicScale, PieController, PointElement, PolarAreaController, RadarController, RadialLinearScale, Scale, ScatterController, plugin_subtitle as SubTitle, Ticks, TimeScale, TimeSeriesScale, plugin_title as Title, plugin_tooltip as Tooltip, adapters as _adapters, _detectPlatform, animator, controllers, elements, layouts, plugins, registerables, registry, scales };\n","import {Chart, registerables} from '../dist/chart.mjs';\n\nChart.register(...registerables);\n\nexport default Chart;\n","import makeDefaultOptions from \"./default-bar-options\";\nimport Chart from \"chart.js/auto\";\n\nexport default () => {\n const el = document.getElementById(\"invoice-count-daily\");\n if (!el) {\n return;\n }\n\n const ctx = el.getContext(\"2d\");\n\n let options = makeDefaultOptions(\n ctx,\n chart_data.invoices_count.daily.label,\n chart_data.invoices_count.daily.labels,\n chart_data.invoices_count.daily.data\n );\n\n const chart = new Chart(ctx, options);\n chart.render();\n};\n","import makeDefaultOptions from \"./default-bar-options\";\nimport Chart from \"chart.js/auto\";\n\nexport default () => {\n const el = document.getElementById(\"invoice-count-weekly\");\n if (!el) {\n return;\n }\n\n const ctx = el.getContext(\"2d\");\n\n let options = makeDefaultOptions(\n ctx,\n chart_data.invoices_count.weekly.label,\n chart_data.invoices_count.weekly.labels,\n chart_data.invoices_count.weekly.data\n );\n\n const chart = new Chart(ctx, options);\n\n chart.render();\n};\n","import makeDefaultOptions from \"./default-bar-options\";\nimport Chart from \"chart.js/auto\";\n\nexport default () => {\n const el = document.getElementById(\"invoice-count-monthly\");\n if (!el) {\n return;\n }\n\n const ctx = el.getContext(\"2d\");\n\n let options = makeDefaultOptions(\n ctx,\n chart_data.invoices_count.monthly.label,\n chart_data.invoices_count.monthly.labels,\n chart_data.invoices_count.monthly.data\n );\n\n const chart = new Chart(ctx, options);\n\n chart.render();\n};\n","import makeDefaultOptions from \"./default-bar-options\";\nimport Chart from \"chart.js/auto\";\n\nexport default () => {\n const el = document.getElementById(\"payment-count-daily\");\n if (!el) {\n return;\n }\n\n const ctx = el.getContext(\"2d\");\n\n let options = makeDefaultOptions(\n ctx,\n chart_data.payments_count.daily.label,\n chart_data.payments_count.daily.labels,\n chart_data.payments_count.daily.data\n );\n\n const chart = new Chart(ctx, options);\n\n chart.render();\n};\n","import makeDefaultOptions from \"./default-bar-options\";\nimport Chart from \"chart.js/auto\";\n\nexport default () => {\n const el = document.getElementById(\"payment-count-weekly\");\n if (!el) {\n return;\n }\n\n const ctx = el.getContext(\"2d\");\n\n let options = makeDefaultOptions(\n ctx,\n chart_data.payments_count.weekly.label,\n chart_data.payments_count.weekly.labels,\n chart_data.payments_count.weekly.data\n );\n\n const chart = new Chart(ctx, options);\n\n chart.render();\n};\n","import makeDefaultOptions from \"./default-bar-options\";\nimport Chart from \"chart.js/auto\";\n\nexport default () => {\n const el = document.getElementById(\"payment-count-monthly\");\n if (!el) {\n return;\n }\n\n const ctx = el.getContext(\"2d\");\n\n let options = makeDefaultOptions(\n ctx,\n chart_data.payments_count.monthly.label,\n chart_data.payments_count.monthly.labels,\n chart_data.payments_count.monthly.data\n );\n\n const chart = new Chart(ctx, options);\n\n chart.render();\n};\n","import colors from \"./colors\";\n\nexport default (ctx, label, labels, data) => {\n const gradient = ctx.createLinearGradient(0, 0, 0, 1000);\n gradient.addColorStop(0, colors.color.quarter);\n gradient.addColorStop(1, colors.color.zero);\n\n return {\n type: \"line\",\n data: {\n labels: labels,\n datasets: [\n {\n label: label,\n data: data,\n fill: true,\n backgroundColor: gradient,\n pointBackgroundColor: colors.color.default,\n borderColor: colors.color.half,\n lineTension: 0.13,\n borderWidth: 2,\n pointRadius: 3,\n },\n ],\n },\n options: {\n maintainAspectRatio: false,\n plugins: {\n legend: {\n display: false,\n },\n },\n responsive: true,\n tension: 0.4,\n scales: {\n y: {\n beginAtZero: true,\n grace: \"15%\",\n border: {\n dash: [4, 4],\n },\n grid: {\n color: colors.color.border,\n },\n },\n x: {\n grid: {\n display: false,\n },\n },\n },\n },\n };\n};\n","import makeDefaultOptions from \"./default-line-options\";\nimport Chart from \"chart.js/auto\";\n\nexport default () => {\n const el = document.getElementById(\"payment-amount-daily\");\n if (!el) {\n return;\n }\n\n const ctx = el.getContext(\"2d\");\n\n let options = makeDefaultOptions(\n ctx,\n chart_data.payments_amount.daily.label,\n chart_data.payments_amount.daily.labels,\n chart_data.payments_amount.daily.data\n );\n\n const chart = new Chart(ctx, options);\n chart.render();\n};\n","import makeDefaultOptions from \"./default-line-options\";\nimport Chart from \"chart.js/auto\";\n\nexport default () => {\n const el = document.getElementById(\"payment-amount-weekly\");\n if (!el) {\n return;\n }\n\n const ctx = el.getContext(\"2d\");\n\n let options = makeDefaultOptions(\n ctx,\n chart_data.payments_amount.weekly.label,\n chart_data.payments_amount.weekly.labels,\n chart_data.payments_amount.weekly.data\n );\n\n const chart = new Chart(ctx, options);\n chart.render();\n};\n","import makeDefaultOptions from \"./default-line-options\";\nimport Chart from \"chart.js/auto\";\n\nexport default () => {\n const el = document.getElementById(\"payment-amount-monthly\");\n if (!el) {\n return;\n }\n\n const ctx = el.getContext(\"2d\");\n\n let options = makeDefaultOptions(\n ctx,\n chart_data.payments_amount.monthly.label,\n chart_data.payments_amount.monthly.labels,\n chart_data.payments_amount.monthly.data\n );\n\n const chart = new Chart(ctx, options);\n chart.render();\n};\n","import initInvoiceCountDaily from \"./invoice-count-daily\";\nimport initInvoiceCountWeekly from \"./invoice-count-weekly\";\nimport initInvoiceCountMonthly from \"./invoice-count-monthly\";\nimport initPaymentCountDaily from \"./payment-count-daily\";\nimport initPaymentCountWeekly from \"./payment-count-weekly\";\nimport initPaymentCountMonthly from \"./payment-count-monthly\";\nimport initPaymentAmountDaily from \"./payment-amount-daily\";\nimport initPaymentAmountWeekly from \"./payment-amount-weekly\";\nimport initPaymentAmountMonthly from \"./payment-amount-monthly\";\n\ndocument.addEventListener(\"DOMContentLoaded\", () => {\n if (window.chartsLoaded) {\n return;\n }\n\n initInvoiceCountDaily();\n initInvoiceCountWeekly();\n initInvoiceCountMonthly();\n initPaymentCountDaily();\n initPaymentCountWeekly();\n initPaymentCountMonthly();\n initPaymentAmountDaily();\n initPaymentAmountWeekly();\n initPaymentAmountMonthly();\n\n window.chartsLoaded = true;\n});\n","// these aren't really private, but nor are they really useful to document\n\n/**\n * @private\n */\nclass LuxonError extends Error {}\n\n/**\n * @private\n */\nexport class InvalidDateTimeError extends LuxonError {\n constructor(reason) {\n super(`Invalid DateTime: ${reason.toMessage()}`);\n }\n}\n\n/**\n * @private\n */\nexport class InvalidIntervalError extends LuxonError {\n constructor(reason) {\n super(`Invalid Interval: ${reason.toMessage()}`);\n }\n}\n\n/**\n * @private\n */\nexport class InvalidDurationError extends LuxonError {\n constructor(reason) {\n super(`Invalid Duration: ${reason.toMessage()}`);\n }\n}\n\n/**\n * @private\n */\nexport class ConflictingSpecificationError extends LuxonError {}\n\n/**\n * @private\n */\nexport class InvalidUnitError extends LuxonError {\n constructor(unit) {\n super(`Invalid unit ${unit}`);\n }\n}\n\n/**\n * @private\n */\nexport class InvalidArgumentError extends LuxonError {}\n\n/**\n * @private\n */\nexport class ZoneIsAbstractError extends LuxonError {\n constructor() {\n super(\"Zone is an abstract class\");\n }\n}\n","/**\n * @private\n */\n\nconst n = \"numeric\",\n s = \"short\",\n l = \"long\";\n\nexport const DATE_SHORT = {\n year: n,\n month: n,\n day: n,\n};\n\nexport const DATE_MED = {\n year: n,\n month: s,\n day: n,\n};\n\nexport const DATE_MED_WITH_WEEKDAY = {\n year: n,\n month: s,\n day: n,\n weekday: s,\n};\n\nexport const DATE_FULL = {\n year: n,\n month: l,\n day: n,\n};\n\nexport const DATE_HUGE = {\n year: n,\n month: l,\n day: n,\n weekday: l,\n};\n\nexport const TIME_SIMPLE = {\n hour: n,\n minute: n,\n};\n\nexport const TIME_WITH_SECONDS = {\n hour: n,\n minute: n,\n second: n,\n};\n\nexport const TIME_WITH_SHORT_OFFSET = {\n hour: n,\n minute: n,\n second: n,\n timeZoneName: s,\n};\n\nexport const TIME_WITH_LONG_OFFSET = {\n hour: n,\n minute: n,\n second: n,\n timeZoneName: l,\n};\n\nexport const TIME_24_SIMPLE = {\n hour: n,\n minute: n,\n hourCycle: \"h23\",\n};\n\nexport const TIME_24_WITH_SECONDS = {\n hour: n,\n minute: n,\n second: n,\n hourCycle: \"h23\",\n};\n\nexport const TIME_24_WITH_SHORT_OFFSET = {\n hour: n,\n minute: n,\n second: n,\n hourCycle: \"h23\",\n timeZoneName: s,\n};\n\nexport const TIME_24_WITH_LONG_OFFSET = {\n hour: n,\n minute: n,\n second: n,\n hourCycle: \"h23\",\n timeZoneName: l,\n};\n\nexport const DATETIME_SHORT = {\n year: n,\n month: n,\n day: n,\n hour: n,\n minute: n,\n};\n\nexport const DATETIME_SHORT_WITH_SECONDS = {\n year: n,\n month: n,\n day: n,\n hour: n,\n minute: n,\n second: n,\n};\n\nexport const DATETIME_MED = {\n year: n,\n month: s,\n day: n,\n hour: n,\n minute: n,\n};\n\nexport const DATETIME_MED_WITH_SECONDS = {\n year: n,\n month: s,\n day: n,\n hour: n,\n minute: n,\n second: n,\n};\n\nexport const DATETIME_MED_WITH_WEEKDAY = {\n year: n,\n month: s,\n day: n,\n weekday: s,\n hour: n,\n minute: n,\n};\n\nexport const DATETIME_FULL = {\n year: n,\n month: l,\n day: n,\n hour: n,\n minute: n,\n timeZoneName: s,\n};\n\nexport const DATETIME_FULL_WITH_SECONDS = {\n year: n,\n month: l,\n day: n,\n hour: n,\n minute: n,\n second: n,\n timeZoneName: s,\n};\n\nexport const DATETIME_HUGE = {\n year: n,\n month: l,\n day: n,\n weekday: l,\n hour: n,\n minute: n,\n timeZoneName: l,\n};\n\nexport const DATETIME_HUGE_WITH_SECONDS = {\n year: n,\n month: l,\n day: n,\n weekday: l,\n hour: n,\n minute: n,\n second: n,\n timeZoneName: l,\n};\n","import { ZoneIsAbstractError } from \"./errors.js\";\n\n/**\n * @interface\n */\nexport default class Zone {\n /**\n * The type of zone\n * @abstract\n * @type {string}\n */\n get type() {\n throw new ZoneIsAbstractError();\n }\n\n /**\n * The name of this zone.\n * @abstract\n * @type {string}\n */\n get name() {\n throw new ZoneIsAbstractError();\n }\n\n /**\n * The IANA name of this zone.\n * Defaults to `name` if not overwritten by a subclass.\n * @abstract\n * @type {string}\n */\n get ianaName() {\n return this.name;\n }\n\n /**\n * Returns whether the offset is known to be fixed for the whole year.\n * @abstract\n * @type {boolean}\n */\n get isUniversal() {\n throw new ZoneIsAbstractError();\n }\n\n /**\n * Returns the offset's common name (such as EST) at the specified timestamp\n * @abstract\n * @param {number} ts - Epoch milliseconds for which to get the name\n * @param {Object} opts - Options to affect the format\n * @param {string} opts.format - What style of offset to return. Accepts 'long' or 'short'.\n * @param {string} opts.locale - What locale to return the offset name in.\n * @return {string}\n */\n offsetName(ts, opts) {\n throw new ZoneIsAbstractError();\n }\n\n /**\n * Returns the offset's value as a string\n * @abstract\n * @param {number} ts - Epoch milliseconds for which to get the offset\n * @param {string} format - What style of offset to return.\n * Accepts 'narrow', 'short', or 'techie'. Returning '+6', '+06:00', or '+0600' respectively\n * @return {string}\n */\n formatOffset(ts, format) {\n throw new ZoneIsAbstractError();\n }\n\n /**\n * Return the offset in minutes for this zone at the specified timestamp.\n * @abstract\n * @param {number} ts - Epoch milliseconds for which to compute the offset\n * @return {number}\n */\n offset(ts) {\n throw new ZoneIsAbstractError();\n }\n\n /**\n * Return whether this Zone is equal to another zone\n * @abstract\n * @param {Zone} otherZone - the zone to compare\n * @return {boolean}\n */\n equals(otherZone) {\n throw new ZoneIsAbstractError();\n }\n\n /**\n * Return whether this Zone is valid.\n * @abstract\n * @type {boolean}\n */\n get isValid() {\n throw new ZoneIsAbstractError();\n }\n}\n","import { formatOffset, parseZoneInfo } from \"../impl/util.js\";\nimport Zone from \"../zone.js\";\n\nlet singleton = null;\n\n/**\n * Represents the local zone for this JavaScript environment.\n * @implements {Zone}\n */\nexport default class SystemZone extends Zone {\n /**\n * Get a singleton instance of the local zone\n * @return {SystemZone}\n */\n static get instance() {\n if (singleton === null) {\n singleton = new SystemZone();\n }\n return singleton;\n }\n\n /** @override **/\n get type() {\n return \"system\";\n }\n\n /** @override **/\n get name() {\n return new Intl.DateTimeFormat().resolvedOptions().timeZone;\n }\n\n /** @override **/\n get isUniversal() {\n return false;\n }\n\n /** @override **/\n offsetName(ts, { format, locale }) {\n return parseZoneInfo(ts, format, locale);\n }\n\n /** @override **/\n formatOffset(ts, format) {\n return formatOffset(this.offset(ts), format);\n }\n\n /** @override **/\n offset(ts) {\n return -new Date(ts).getTimezoneOffset();\n }\n\n /** @override **/\n equals(otherZone) {\n return otherZone.type === \"system\";\n }\n\n /** @override **/\n get isValid() {\n return true;\n }\n}\n","import { formatOffset, parseZoneInfo, isUndefined, objToLocalTS } from \"../impl/util.js\";\nimport Zone from \"../zone.js\";\n\nlet dtfCache = {};\nfunction makeDTF(zone) {\n if (!dtfCache[zone]) {\n dtfCache[zone] = new Intl.DateTimeFormat(\"en-US\", {\n hour12: false,\n timeZone: zone,\n year: \"numeric\",\n month: \"2-digit\",\n day: \"2-digit\",\n hour: \"2-digit\",\n minute: \"2-digit\",\n second: \"2-digit\",\n era: \"short\",\n });\n }\n return dtfCache[zone];\n}\n\nconst typeToPos = {\n year: 0,\n month: 1,\n day: 2,\n era: 3,\n hour: 4,\n minute: 5,\n second: 6,\n};\n\nfunction hackyOffset(dtf, date) {\n const formatted = dtf.format(date).replace(/\\u200E/g, \"\"),\n parsed = /(\\d+)\\/(\\d+)\\/(\\d+) (AD|BC),? (\\d+):(\\d+):(\\d+)/.exec(formatted),\n [, fMonth, fDay, fYear, fadOrBc, fHour, fMinute, fSecond] = parsed;\n return [fYear, fMonth, fDay, fadOrBc, fHour, fMinute, fSecond];\n}\n\nfunction partsOffset(dtf, date) {\n const formatted = dtf.formatToParts(date);\n const filled = [];\n for (let i = 0; i < formatted.length; i++) {\n const { type, value } = formatted[i];\n const pos = typeToPos[type];\n\n if (type === \"era\") {\n filled[pos] = value;\n } else if (!isUndefined(pos)) {\n filled[pos] = parseInt(value, 10);\n }\n }\n return filled;\n}\n\nlet ianaZoneCache = {};\n/**\n * A zone identified by an IANA identifier, like America/New_York\n * @implements {Zone}\n */\nexport default class IANAZone extends Zone {\n /**\n * @param {string} name - Zone name\n * @return {IANAZone}\n */\n static create(name) {\n if (!ianaZoneCache[name]) {\n ianaZoneCache[name] = new IANAZone(name);\n }\n return ianaZoneCache[name];\n }\n\n /**\n * Reset local caches. Should only be necessary in testing scenarios.\n * @return {void}\n */\n static resetCache() {\n ianaZoneCache = {};\n dtfCache = {};\n }\n\n /**\n * Returns whether the provided string is a valid specifier. This only checks the string's format, not that the specifier identifies a known zone; see isValidZone for that.\n * @param {string} s - The string to check validity on\n * @example IANAZone.isValidSpecifier(\"America/New_York\") //=> true\n * @example IANAZone.isValidSpecifier(\"Sport~~blorp\") //=> false\n * @deprecated For backward compatibility, this forwards to isValidZone, better use `isValidZone()` directly instead.\n * @return {boolean}\n */\n static isValidSpecifier(s) {\n return this.isValidZone(s);\n }\n\n /**\n * Returns whether the provided string identifies a real zone\n * @param {string} zone - The string to check\n * @example IANAZone.isValidZone(\"America/New_York\") //=> true\n * @example IANAZone.isValidZone(\"Fantasia/Castle\") //=> false\n * @example IANAZone.isValidZone(\"Sport~~blorp\") //=> false\n * @return {boolean}\n */\n static isValidZone(zone) {\n if (!zone) {\n return false;\n }\n try {\n new Intl.DateTimeFormat(\"en-US\", { timeZone: zone }).format();\n return true;\n } catch (e) {\n return false;\n }\n }\n\n constructor(name) {\n super();\n /** @private **/\n this.zoneName = name;\n /** @private **/\n this.valid = IANAZone.isValidZone(name);\n }\n\n /**\n * The type of zone. `iana` for all instances of `IANAZone`.\n * @override\n * @type {string}\n */\n get type() {\n return \"iana\";\n }\n\n /**\n * The name of this zone (i.e. the IANA zone name).\n * @override\n * @type {string}\n */\n get name() {\n return this.zoneName;\n }\n\n /**\n * Returns whether the offset is known to be fixed for the whole year:\n * Always returns false for all IANA zones.\n * @override\n * @type {boolean}\n */\n get isUniversal() {\n return false;\n }\n\n /**\n * Returns the offset's common name (such as EST) at the specified timestamp\n * @override\n * @param {number} ts - Epoch milliseconds for which to get the name\n * @param {Object} opts - Options to affect the format\n * @param {string} opts.format - What style of offset to return. Accepts 'long' or 'short'.\n * @param {string} opts.locale - What locale to return the offset name in.\n * @return {string}\n */\n offsetName(ts, { format, locale }) {\n return parseZoneInfo(ts, format, locale, this.name);\n }\n\n /**\n * Returns the offset's value as a string\n * @override\n * @param {number} ts - Epoch milliseconds for which to get the offset\n * @param {string} format - What style of offset to return.\n * Accepts 'narrow', 'short', or 'techie'. Returning '+6', '+06:00', or '+0600' respectively\n * @return {string}\n */\n formatOffset(ts, format) {\n return formatOffset(this.offset(ts), format);\n }\n\n /**\n * Return the offset in minutes for this zone at the specified timestamp.\n * @override\n * @param {number} ts - Epoch milliseconds for which to compute the offset\n * @return {number}\n */\n offset(ts) {\n const date = new Date(ts);\n\n if (isNaN(date)) return NaN;\n\n const dtf = makeDTF(this.name);\n let [year, month, day, adOrBc, hour, minute, second] = dtf.formatToParts\n ? partsOffset(dtf, date)\n : hackyOffset(dtf, date);\n\n if (adOrBc === \"BC\") {\n year = -Math.abs(year) + 1;\n }\n\n // because we're using hour12 and https://bugs.chromium.org/p/chromium/issues/detail?id=1025564&can=2&q=%2224%3A00%22%20datetimeformat\n const adjustedHour = hour === 24 ? 0 : hour;\n\n const asUTC = objToLocalTS({\n year,\n month,\n day,\n hour: adjustedHour,\n minute,\n second,\n millisecond: 0,\n });\n\n let asTS = +date;\n const over = asTS % 1000;\n asTS -= over >= 0 ? over : 1000 + over;\n return (asUTC - asTS) / (60 * 1000);\n }\n\n /**\n * Return whether this Zone is equal to another zone\n * @override\n * @param {Zone} otherZone - the zone to compare\n * @return {boolean}\n */\n equals(otherZone) {\n return otherZone.type === \"iana\" && otherZone.name === this.name;\n }\n\n /**\n * Return whether this Zone is valid.\n * @override\n * @type {boolean}\n */\n get isValid() {\n return this.valid;\n }\n}\n","import { hasLocaleWeekInfo, hasRelative, padStart, roundTo, validateWeekSettings } from \"./util.js\";\nimport * as English from \"./english.js\";\nimport Settings from \"../settings.js\";\nimport DateTime from \"../datetime.js\";\nimport IANAZone from \"../zones/IANAZone.js\";\n\n// todo - remap caching\n\nlet intlLFCache = {};\nfunction getCachedLF(locString, opts = {}) {\n const key = JSON.stringify([locString, opts]);\n let dtf = intlLFCache[key];\n if (!dtf) {\n dtf = new Intl.ListFormat(locString, opts);\n intlLFCache[key] = dtf;\n }\n return dtf;\n}\n\nlet intlDTCache = {};\nfunction getCachedDTF(locString, opts = {}) {\n const key = JSON.stringify([locString, opts]);\n let dtf = intlDTCache[key];\n if (!dtf) {\n dtf = new Intl.DateTimeFormat(locString, opts);\n intlDTCache[key] = dtf;\n }\n return dtf;\n}\n\nlet intlNumCache = {};\nfunction getCachedINF(locString, opts = {}) {\n const key = JSON.stringify([locString, opts]);\n let inf = intlNumCache[key];\n if (!inf) {\n inf = new Intl.NumberFormat(locString, opts);\n intlNumCache[key] = inf;\n }\n return inf;\n}\n\nlet intlRelCache = {};\nfunction getCachedRTF(locString, opts = {}) {\n const { base, ...cacheKeyOpts } = opts; // exclude `base` from the options\n const key = JSON.stringify([locString, cacheKeyOpts]);\n let inf = intlRelCache[key];\n if (!inf) {\n inf = new Intl.RelativeTimeFormat(locString, opts);\n intlRelCache[key] = inf;\n }\n return inf;\n}\n\nlet sysLocaleCache = null;\nfunction systemLocale() {\n if (sysLocaleCache) {\n return sysLocaleCache;\n } else {\n sysLocaleCache = new Intl.DateTimeFormat().resolvedOptions().locale;\n return sysLocaleCache;\n }\n}\n\nlet weekInfoCache = {};\nfunction getCachedWeekInfo(locString) {\n let data = weekInfoCache[locString];\n if (!data) {\n const locale = new Intl.Locale(locString);\n // browsers currently implement this as a property, but spec says it should be a getter function\n data = \"getWeekInfo\" in locale ? locale.getWeekInfo() : locale.weekInfo;\n weekInfoCache[locString] = data;\n }\n return data;\n}\n\nfunction parseLocaleString(localeStr) {\n // I really want to avoid writing a BCP 47 parser\n // see, e.g. https://github.com/wooorm/bcp-47\n // Instead, we'll do this:\n\n // a) if the string has no -u extensions, just leave it alone\n // b) if it does, use Intl to resolve everything\n // c) if Intl fails, try again without the -u\n\n // private subtags and unicode subtags have ordering requirements,\n // and we're not properly parsing this, so just strip out the\n // private ones if they exist.\n const xIndex = localeStr.indexOf(\"-x-\");\n if (xIndex !== -1) {\n localeStr = localeStr.substring(0, xIndex);\n }\n\n const uIndex = localeStr.indexOf(\"-u-\");\n if (uIndex === -1) {\n return [localeStr];\n } else {\n let options;\n let selectedStr;\n try {\n options = getCachedDTF(localeStr).resolvedOptions();\n selectedStr = localeStr;\n } catch (e) {\n const smaller = localeStr.substring(0, uIndex);\n options = getCachedDTF(smaller).resolvedOptions();\n selectedStr = smaller;\n }\n\n const { numberingSystem, calendar } = options;\n return [selectedStr, numberingSystem, calendar];\n }\n}\n\nfunction intlConfigString(localeStr, numberingSystem, outputCalendar) {\n if (outputCalendar || numberingSystem) {\n if (!localeStr.includes(\"-u-\")) {\n localeStr += \"-u\";\n }\n\n if (outputCalendar) {\n localeStr += `-ca-${outputCalendar}`;\n }\n\n if (numberingSystem) {\n localeStr += `-nu-${numberingSystem}`;\n }\n return localeStr;\n } else {\n return localeStr;\n }\n}\n\nfunction mapMonths(f) {\n const ms = [];\n for (let i = 1; i <= 12; i++) {\n const dt = DateTime.utc(2009, i, 1);\n ms.push(f(dt));\n }\n return ms;\n}\n\nfunction mapWeekdays(f) {\n const ms = [];\n for (let i = 1; i <= 7; i++) {\n const dt = DateTime.utc(2016, 11, 13 + i);\n ms.push(f(dt));\n }\n return ms;\n}\n\nfunction listStuff(loc, length, englishFn, intlFn) {\n const mode = loc.listingMode();\n\n if (mode === \"error\") {\n return null;\n } else if (mode === \"en\") {\n return englishFn(length);\n } else {\n return intlFn(length);\n }\n}\n\nfunction supportsFastNumbers(loc) {\n if (loc.numberingSystem && loc.numberingSystem !== \"latn\") {\n return false;\n } else {\n return (\n loc.numberingSystem === \"latn\" ||\n !loc.locale ||\n loc.locale.startsWith(\"en\") ||\n new Intl.DateTimeFormat(loc.intl).resolvedOptions().numberingSystem === \"latn\"\n );\n }\n}\n\n/**\n * @private\n */\n\nclass PolyNumberFormatter {\n constructor(intl, forceSimple, opts) {\n this.padTo = opts.padTo || 0;\n this.floor = opts.floor || false;\n\n const { padTo, floor, ...otherOpts } = opts;\n\n if (!forceSimple || Object.keys(otherOpts).length > 0) {\n const intlOpts = { useGrouping: false, ...opts };\n if (opts.padTo > 0) intlOpts.minimumIntegerDigits = opts.padTo;\n this.inf = getCachedINF(intl, intlOpts);\n }\n }\n\n format(i) {\n if (this.inf) {\n const fixed = this.floor ? Math.floor(i) : i;\n return this.inf.format(fixed);\n } else {\n // to match the browser's numberformatter defaults\n const fixed = this.floor ? Math.floor(i) : roundTo(i, 3);\n return padStart(fixed, this.padTo);\n }\n }\n}\n\n/**\n * @private\n */\n\nclass PolyDateFormatter {\n constructor(dt, intl, opts) {\n this.opts = opts;\n this.originalZone = undefined;\n\n let z = undefined;\n if (this.opts.timeZone) {\n // Don't apply any workarounds if a timeZone is explicitly provided in opts\n this.dt = dt;\n } else if (dt.zone.type === \"fixed\") {\n // UTC-8 or Etc/UTC-8 are not part of tzdata, only Etc/GMT+8 and the like.\n // That is why fixed-offset TZ is set to that unless it is:\n // 1. Representing offset 0 when UTC is used to maintain previous behavior and does not become GMT.\n // 2. Unsupported by the browser:\n // - some do not support Etc/\n // - < Etc/GMT-14, > Etc/GMT+12, and 30-minute or 45-minute offsets are not part of tzdata\n const gmtOffset = -1 * (dt.offset / 60);\n const offsetZ = gmtOffset >= 0 ? `Etc/GMT+${gmtOffset}` : `Etc/GMT${gmtOffset}`;\n if (dt.offset !== 0 && IANAZone.create(offsetZ).valid) {\n z = offsetZ;\n this.dt = dt;\n } else {\n // Not all fixed-offset zones like Etc/+4:30 are present in tzdata so\n // we manually apply the offset and substitute the zone as needed.\n z = \"UTC\";\n this.dt = dt.offset === 0 ? dt : dt.setZone(\"UTC\").plus({ minutes: dt.offset });\n this.originalZone = dt.zone;\n }\n } else if (dt.zone.type === \"system\") {\n this.dt = dt;\n } else if (dt.zone.type === \"iana\") {\n this.dt = dt;\n z = dt.zone.name;\n } else {\n // Custom zones can have any offset / offsetName so we just manually\n // apply the offset and substitute the zone as needed.\n z = \"UTC\";\n this.dt = dt.setZone(\"UTC\").plus({ minutes: dt.offset });\n this.originalZone = dt.zone;\n }\n\n const intlOpts = { ...this.opts };\n intlOpts.timeZone = intlOpts.timeZone || z;\n this.dtf = getCachedDTF(intl, intlOpts);\n }\n\n format() {\n if (this.originalZone) {\n // If we have to substitute in the actual zone name, we have to use\n // formatToParts so that the timezone can be replaced.\n return this.formatToParts()\n .map(({ value }) => value)\n .join(\"\");\n }\n return this.dtf.format(this.dt.toJSDate());\n }\n\n formatToParts() {\n const parts = this.dtf.formatToParts(this.dt.toJSDate());\n if (this.originalZone) {\n return parts.map((part) => {\n if (part.type === \"timeZoneName\") {\n const offsetName = this.originalZone.offsetName(this.dt.ts, {\n locale: this.dt.locale,\n format: this.opts.timeZoneName,\n });\n return {\n ...part,\n value: offsetName,\n };\n } else {\n return part;\n }\n });\n }\n return parts;\n }\n\n resolvedOptions() {\n return this.dtf.resolvedOptions();\n }\n}\n\n/**\n * @private\n */\nclass PolyRelFormatter {\n constructor(intl, isEnglish, opts) {\n this.opts = { style: \"long\", ...opts };\n if (!isEnglish && hasRelative()) {\n this.rtf = getCachedRTF(intl, opts);\n }\n }\n\n format(count, unit) {\n if (this.rtf) {\n return this.rtf.format(count, unit);\n } else {\n return English.formatRelativeTime(unit, count, this.opts.numeric, this.opts.style !== \"long\");\n }\n }\n\n formatToParts(count, unit) {\n if (this.rtf) {\n return this.rtf.formatToParts(count, unit);\n } else {\n return [];\n }\n }\n}\n\nconst fallbackWeekSettings = {\n firstDay: 1,\n minimalDays: 4,\n weekend: [6, 7],\n};\n\n/**\n * @private\n */\n\nexport default class Locale {\n static fromOpts(opts) {\n return Locale.create(\n opts.locale,\n opts.numberingSystem,\n opts.outputCalendar,\n opts.weekSettings,\n opts.defaultToEN\n );\n }\n\n static create(locale, numberingSystem, outputCalendar, weekSettings, defaultToEN = false) {\n const specifiedLocale = locale || Settings.defaultLocale;\n // the system locale is useful for human-readable strings but annoying for parsing/formatting known formats\n const localeR = specifiedLocale || (defaultToEN ? \"en-US\" : systemLocale());\n const numberingSystemR = numberingSystem || Settings.defaultNumberingSystem;\n const outputCalendarR = outputCalendar || Settings.defaultOutputCalendar;\n const weekSettingsR = validateWeekSettings(weekSettings) || Settings.defaultWeekSettings;\n return new Locale(localeR, numberingSystemR, outputCalendarR, weekSettingsR, specifiedLocale);\n }\n\n static resetCache() {\n sysLocaleCache = null;\n intlDTCache = {};\n intlNumCache = {};\n intlRelCache = {};\n }\n\n static fromObject({ locale, numberingSystem, outputCalendar, weekSettings } = {}) {\n return Locale.create(locale, numberingSystem, outputCalendar, weekSettings);\n }\n\n constructor(locale, numbering, outputCalendar, weekSettings, specifiedLocale) {\n const [parsedLocale, parsedNumberingSystem, parsedOutputCalendar] = parseLocaleString(locale);\n\n this.locale = parsedLocale;\n this.numberingSystem = numbering || parsedNumberingSystem || null;\n this.outputCalendar = outputCalendar || parsedOutputCalendar || null;\n this.weekSettings = weekSettings;\n this.intl = intlConfigString(this.locale, this.numberingSystem, this.outputCalendar);\n\n this.weekdaysCache = { format: {}, standalone: {} };\n this.monthsCache = { format: {}, standalone: {} };\n this.meridiemCache = null;\n this.eraCache = {};\n\n this.specifiedLocale = specifiedLocale;\n this.fastNumbersCached = null;\n }\n\n get fastNumbers() {\n if (this.fastNumbersCached == null) {\n this.fastNumbersCached = supportsFastNumbers(this);\n }\n\n return this.fastNumbersCached;\n }\n\n listingMode() {\n const isActuallyEn = this.isEnglish();\n const hasNoWeirdness =\n (this.numberingSystem === null || this.numberingSystem === \"latn\") &&\n (this.outputCalendar === null || this.outputCalendar === \"gregory\");\n return isActuallyEn && hasNoWeirdness ? \"en\" : \"intl\";\n }\n\n clone(alts) {\n if (!alts || Object.getOwnPropertyNames(alts).length === 0) {\n return this;\n } else {\n return Locale.create(\n alts.locale || this.specifiedLocale,\n alts.numberingSystem || this.numberingSystem,\n alts.outputCalendar || this.outputCalendar,\n validateWeekSettings(alts.weekSettings) || this.weekSettings,\n alts.defaultToEN || false\n );\n }\n }\n\n redefaultToEN(alts = {}) {\n return this.clone({ ...alts, defaultToEN: true });\n }\n\n redefaultToSystem(alts = {}) {\n return this.clone({ ...alts, defaultToEN: false });\n }\n\n months(length, format = false) {\n return listStuff(this, length, English.months, () => {\n const intl = format ? { month: length, day: \"numeric\" } : { month: length },\n formatStr = format ? \"format\" : \"standalone\";\n if (!this.monthsCache[formatStr][length]) {\n this.monthsCache[formatStr][length] = mapMonths((dt) => this.extract(dt, intl, \"month\"));\n }\n return this.monthsCache[formatStr][length];\n });\n }\n\n weekdays(length, format = false) {\n return listStuff(this, length, English.weekdays, () => {\n const intl = format\n ? { weekday: length, year: \"numeric\", month: \"long\", day: \"numeric\" }\n : { weekday: length },\n formatStr = format ? \"format\" : \"standalone\";\n if (!this.weekdaysCache[formatStr][length]) {\n this.weekdaysCache[formatStr][length] = mapWeekdays((dt) =>\n this.extract(dt, intl, \"weekday\")\n );\n }\n return this.weekdaysCache[formatStr][length];\n });\n }\n\n meridiems() {\n return listStuff(\n this,\n undefined,\n () => English.meridiems,\n () => {\n // In theory there could be aribitrary day periods. We're gonna assume there are exactly two\n // for AM and PM. This is probably wrong, but it's makes parsing way easier.\n if (!this.meridiemCache) {\n const intl = { hour: \"numeric\", hourCycle: \"h12\" };\n this.meridiemCache = [DateTime.utc(2016, 11, 13, 9), DateTime.utc(2016, 11, 13, 19)].map(\n (dt) => this.extract(dt, intl, \"dayperiod\")\n );\n }\n\n return this.meridiemCache;\n }\n );\n }\n\n eras(length) {\n return listStuff(this, length, English.eras, () => {\n const intl = { era: length };\n\n // This is problematic. Different calendars are going to define eras totally differently. What I need is the minimum set of dates\n // to definitely enumerate them.\n if (!this.eraCache[length]) {\n this.eraCache[length] = [DateTime.utc(-40, 1, 1), DateTime.utc(2017, 1, 1)].map((dt) =>\n this.extract(dt, intl, \"era\")\n );\n }\n\n return this.eraCache[length];\n });\n }\n\n extract(dt, intlOpts, field) {\n const df = this.dtFormatter(dt, intlOpts),\n results = df.formatToParts(),\n matching = results.find((m) => m.type.toLowerCase() === field);\n return matching ? matching.value : null;\n }\n\n numberFormatter(opts = {}) {\n // this forcesimple option is never used (the only caller short-circuits on it, but it seems safer to leave)\n // (in contrast, the rest of the condition is used heavily)\n return new PolyNumberFormatter(this.intl, opts.forceSimple || this.fastNumbers, opts);\n }\n\n dtFormatter(dt, intlOpts = {}) {\n return new PolyDateFormatter(dt, this.intl, intlOpts);\n }\n\n relFormatter(opts = {}) {\n return new PolyRelFormatter(this.intl, this.isEnglish(), opts);\n }\n\n listFormatter(opts = {}) {\n return getCachedLF(this.intl, opts);\n }\n\n isEnglish() {\n return (\n this.locale === \"en\" ||\n this.locale.toLowerCase() === \"en-us\" ||\n new Intl.DateTimeFormat(this.intl).resolvedOptions().locale.startsWith(\"en-us\")\n );\n }\n\n getWeekSettings() {\n if (this.weekSettings) {\n return this.weekSettings;\n } else if (!hasLocaleWeekInfo()) {\n return fallbackWeekSettings;\n } else {\n return getCachedWeekInfo(this.locale);\n }\n }\n\n getStartOfWeek() {\n return this.getWeekSettings().firstDay;\n }\n\n getMinDaysInFirstWeek() {\n return this.getWeekSettings().minimalDays;\n }\n\n getWeekendDays() {\n return this.getWeekSettings().weekend;\n }\n\n equals(other) {\n return (\n this.locale === other.locale &&\n this.numberingSystem === other.numberingSystem &&\n this.outputCalendar === other.outputCalendar\n );\n }\n\n toString() {\n return `Locale(${this.locale}, ${this.numberingSystem}, ${this.outputCalendar})`;\n }\n}\n","import { formatOffset, signedOffset } from \"../impl/util.js\";\nimport Zone from \"../zone.js\";\n\nlet singleton = null;\n\n/**\n * A zone with a fixed offset (meaning no DST)\n * @implements {Zone}\n */\nexport default class FixedOffsetZone extends Zone {\n /**\n * Get a singleton instance of UTC\n * @return {FixedOffsetZone}\n */\n static get utcInstance() {\n if (singleton === null) {\n singleton = new FixedOffsetZone(0);\n }\n return singleton;\n }\n\n /**\n * Get an instance with a specified offset\n * @param {number} offset - The offset in minutes\n * @return {FixedOffsetZone}\n */\n static instance(offset) {\n return offset === 0 ? FixedOffsetZone.utcInstance : new FixedOffsetZone(offset);\n }\n\n /**\n * Get an instance of FixedOffsetZone from a UTC offset string, like \"UTC+6\"\n * @param {string} s - The offset string to parse\n * @example FixedOffsetZone.parseSpecifier(\"UTC+6\")\n * @example FixedOffsetZone.parseSpecifier(\"UTC+06\")\n * @example FixedOffsetZone.parseSpecifier(\"UTC-6:00\")\n * @return {FixedOffsetZone}\n */\n static parseSpecifier(s) {\n if (s) {\n const r = s.match(/^utc(?:([+-]\\d{1,2})(?::(\\d{2}))?)?$/i);\n if (r) {\n return new FixedOffsetZone(signedOffset(r[1], r[2]));\n }\n }\n return null;\n }\n\n constructor(offset) {\n super();\n /** @private **/\n this.fixed = offset;\n }\n\n /**\n * The type of zone. `fixed` for all instances of `FixedOffsetZone`.\n * @override\n * @type {string}\n */\n get type() {\n return \"fixed\";\n }\n\n /**\n * The name of this zone.\n * All fixed zones' names always start with \"UTC\" (plus optional offset)\n * @override\n * @type {string}\n */\n get name() {\n return this.fixed === 0 ? \"UTC\" : `UTC${formatOffset(this.fixed, \"narrow\")}`;\n }\n\n /**\n * The IANA name of this zone, i.e. `Etc/UTC` or `Etc/GMT+/-nn`\n *\n * @override\n * @type {string}\n */\n get ianaName() {\n if (this.fixed === 0) {\n return \"Etc/UTC\";\n } else {\n return `Etc/GMT${formatOffset(-this.fixed, \"narrow\")}`;\n }\n }\n\n /**\n * Returns the offset's common name at the specified timestamp.\n *\n * For fixed offset zones this equals to the zone name.\n * @override\n */\n offsetName() {\n return this.name;\n }\n\n /**\n * Returns the offset's value as a string\n * @override\n * @param {number} ts - Epoch milliseconds for which to get the offset\n * @param {string} format - What style of offset to return.\n * Accepts 'narrow', 'short', or 'techie'. Returning '+6', '+06:00', or '+0600' respectively\n * @return {string}\n */\n formatOffset(ts, format) {\n return formatOffset(this.fixed, format);\n }\n\n /**\n * Returns whether the offset is known to be fixed for the whole year:\n * Always returns true for all fixed offset zones.\n * @override\n * @type {boolean}\n */\n get isUniversal() {\n return true;\n }\n\n /**\n * Return the offset in minutes for this zone at the specified timestamp.\n *\n * For fixed offset zones, this is constant and does not depend on a timestamp.\n * @override\n * @return {number}\n */\n offset() {\n return this.fixed;\n }\n\n /**\n * Return whether this Zone is equal to another zone (i.e. also fixed and same offset)\n * @override\n * @param {Zone} otherZone - the zone to compare\n * @return {boolean}\n */\n equals(otherZone) {\n return otherZone.type === \"fixed\" && otherZone.fixed === this.fixed;\n }\n\n /**\n * Return whether this Zone is valid:\n * All fixed offset zones are valid.\n * @override\n * @type {boolean}\n */\n get isValid() {\n return true;\n }\n}\n","import Zone from \"../zone.js\";\n\n/**\n * A zone that failed to parse. You should never need to instantiate this.\n * @implements {Zone}\n */\nexport default class InvalidZone extends Zone {\n constructor(zoneName) {\n super();\n /** @private */\n this.zoneName = zoneName;\n }\n\n /** @override **/\n get type() {\n return \"invalid\";\n }\n\n /** @override **/\n get name() {\n return this.zoneName;\n }\n\n /** @override **/\n get isUniversal() {\n return false;\n }\n\n /** @override **/\n offsetName() {\n return null;\n }\n\n /** @override **/\n formatOffset() {\n return \"\";\n }\n\n /** @override **/\n offset() {\n return NaN;\n }\n\n /** @override **/\n equals() {\n return false;\n }\n\n /** @override **/\n get isValid() {\n return false;\n }\n}\n","/**\n * @private\n */\n\nimport Zone from \"../zone.js\";\nimport IANAZone from \"../zones/IANAZone.js\";\nimport FixedOffsetZone from \"../zones/fixedOffsetZone.js\";\nimport InvalidZone from \"../zones/invalidZone.js\";\n\nimport { isUndefined, isString, isNumber } from \"./util.js\";\nimport SystemZone from \"../zones/systemZone.js\";\n\nexport function normalizeZone(input, defaultZone) {\n let offset;\n if (isUndefined(input) || input === null) {\n return defaultZone;\n } else if (input instanceof Zone) {\n return input;\n } else if (isString(input)) {\n const lowered = input.toLowerCase();\n if (lowered === \"default\") return defaultZone;\n else if (lowered === \"local\" || lowered === \"system\") return SystemZone.instance;\n else if (lowered === \"utc\" || lowered === \"gmt\") return FixedOffsetZone.utcInstance;\n else return FixedOffsetZone.parseSpecifier(lowered) || IANAZone.create(input);\n } else if (isNumber(input)) {\n return FixedOffsetZone.instance(input);\n } else if (typeof input === \"object\" && \"offset\" in input && typeof input.offset === \"function\") {\n // This is dumb, but the instanceof check above doesn't seem to really work\n // so we're duck checking it\n return input;\n } else {\n return new InvalidZone(input);\n }\n}\n","const numberingSystems = {\n arab: \"[\\u0660-\\u0669]\",\n arabext: \"[\\u06F0-\\u06F9]\",\n bali: \"[\\u1B50-\\u1B59]\",\n beng: \"[\\u09E6-\\u09EF]\",\n deva: \"[\\u0966-\\u096F]\",\n fullwide: \"[\\uFF10-\\uFF19]\",\n gujr: \"[\\u0AE6-\\u0AEF]\",\n hanidec: \"[〇|一|二|三|四|五|六|七|八|九]\",\n khmr: \"[\\u17E0-\\u17E9]\",\n knda: \"[\\u0CE6-\\u0CEF]\",\n laoo: \"[\\u0ED0-\\u0ED9]\",\n limb: \"[\\u1946-\\u194F]\",\n mlym: \"[\\u0D66-\\u0D6F]\",\n mong: \"[\\u1810-\\u1819]\",\n mymr: \"[\\u1040-\\u1049]\",\n orya: \"[\\u0B66-\\u0B6F]\",\n tamldec: \"[\\u0BE6-\\u0BEF]\",\n telu: \"[\\u0C66-\\u0C6F]\",\n thai: \"[\\u0E50-\\u0E59]\",\n tibt: \"[\\u0F20-\\u0F29]\",\n latn: \"\\\\d\",\n};\n\nconst numberingSystemsUTF16 = {\n arab: [1632, 1641],\n arabext: [1776, 1785],\n bali: [6992, 7001],\n beng: [2534, 2543],\n deva: [2406, 2415],\n fullwide: [65296, 65303],\n gujr: [2790, 2799],\n khmr: [6112, 6121],\n knda: [3302, 3311],\n laoo: [3792, 3801],\n limb: [6470, 6479],\n mlym: [3430, 3439],\n mong: [6160, 6169],\n mymr: [4160, 4169],\n orya: [2918, 2927],\n tamldec: [3046, 3055],\n telu: [3174, 3183],\n thai: [3664, 3673],\n tibt: [3872, 3881],\n};\n\nconst hanidecChars = numberingSystems.hanidec.replace(/[\\[|\\]]/g, \"\").split(\"\");\n\nexport function parseDigits(str) {\n let value = parseInt(str, 10);\n if (isNaN(value)) {\n value = \"\";\n for (let i = 0; i < str.length; i++) {\n const code = str.charCodeAt(i);\n\n if (str[i].search(numberingSystems.hanidec) !== -1) {\n value += hanidecChars.indexOf(str[i]);\n } else {\n for (const key in numberingSystemsUTF16) {\n const [min, max] = numberingSystemsUTF16[key];\n if (code >= min && code <= max) {\n value += code - min;\n }\n }\n }\n }\n return parseInt(value, 10);\n } else {\n return value;\n }\n}\n\n// cache of {numberingSystem: {append: regex}}\nlet digitRegexCache = {};\nexport function resetDigitRegexCache() {\n digitRegexCache = {};\n}\n\nexport function digitRegex({ numberingSystem }, append = \"\") {\n const ns = numberingSystem || \"latn\";\n\n if (!digitRegexCache[ns]) {\n digitRegexCache[ns] = {};\n }\n if (!digitRegexCache[ns][append]) {\n digitRegexCache[ns][append] = new RegExp(`${numberingSystems[ns]}${append}`);\n }\n\n return digitRegexCache[ns][append];\n}\n","import SystemZone from \"./zones/systemZone.js\";\nimport IANAZone from \"./zones/IANAZone.js\";\nimport Locale from \"./impl/locale.js\";\nimport DateTime from \"./datetime.js\";\n\nimport { normalizeZone } from \"./impl/zoneUtil.js\";\nimport { validateWeekSettings } from \"./impl/util.js\";\nimport { resetDigitRegexCache } from \"./impl/digits.js\";\n\nlet now = () => Date.now(),\n defaultZone = \"system\",\n defaultLocale = null,\n defaultNumberingSystem = null,\n defaultOutputCalendar = null,\n twoDigitCutoffYear = 60,\n throwOnInvalid,\n defaultWeekSettings = null;\n\n/**\n * Settings contains static getters and setters that control Luxon's overall behavior. Luxon is a simple library with few options, but the ones it does have live here.\n */\nexport default class Settings {\n /**\n * Get the callback for returning the current timestamp.\n * @type {function}\n */\n static get now() {\n return now;\n }\n\n /**\n * Set the callback for returning the current timestamp.\n * The function should return a number, which will be interpreted as an Epoch millisecond count\n * @type {function}\n * @example Settings.now = () => Date.now() + 3000 // pretend it is 3 seconds in the future\n * @example Settings.now = () => 0 // always pretend it's Jan 1, 1970 at midnight in UTC time\n */\n static set now(n) {\n now = n;\n }\n\n /**\n * Set the default time zone to create DateTimes in. Does not affect existing instances.\n * Use the value \"system\" to reset this value to the system's time zone.\n * @type {string}\n */\n static set defaultZone(zone) {\n defaultZone = zone;\n }\n\n /**\n * Get the default time zone object currently used to create DateTimes. Does not affect existing instances.\n * The default value is the system's time zone (the one set on the machine that runs this code).\n * @type {Zone}\n */\n static get defaultZone() {\n return normalizeZone(defaultZone, SystemZone.instance);\n }\n\n /**\n * Get the default locale to create DateTimes with. Does not affect existing instances.\n * @type {string}\n */\n static get defaultLocale() {\n return defaultLocale;\n }\n\n /**\n * Set the default locale to create DateTimes with. Does not affect existing instances.\n * @type {string}\n */\n static set defaultLocale(locale) {\n defaultLocale = locale;\n }\n\n /**\n * Get the default numbering system to create DateTimes with. Does not affect existing instances.\n * @type {string}\n */\n static get defaultNumberingSystem() {\n return defaultNumberingSystem;\n }\n\n /**\n * Set the default numbering system to create DateTimes with. Does not affect existing instances.\n * @type {string}\n */\n static set defaultNumberingSystem(numberingSystem) {\n defaultNumberingSystem = numberingSystem;\n }\n\n /**\n * Get the default output calendar to create DateTimes with. Does not affect existing instances.\n * @type {string}\n */\n static get defaultOutputCalendar() {\n return defaultOutputCalendar;\n }\n\n /**\n * Set the default output calendar to create DateTimes with. Does not affect existing instances.\n * @type {string}\n */\n static set defaultOutputCalendar(outputCalendar) {\n defaultOutputCalendar = outputCalendar;\n }\n\n /**\n * @typedef {Object} WeekSettings\n * @property {number} firstDay\n * @property {number} minimalDays\n * @property {number[]} weekend\n */\n\n /**\n * @return {WeekSettings|null}\n */\n static get defaultWeekSettings() {\n return defaultWeekSettings;\n }\n\n /**\n * Allows overriding the default locale week settings, i.e. the start of the week, the weekend and\n * how many days are required in the first week of a year.\n * Does not affect existing instances.\n *\n * @param {WeekSettings|null} weekSettings\n */\n static set defaultWeekSettings(weekSettings) {\n defaultWeekSettings = validateWeekSettings(weekSettings);\n }\n\n /**\n * Get the cutoff year for whether a 2-digit year string is interpreted in the current or previous century. Numbers higher than the cutoff will be considered to mean 19xx and numbers lower or equal to the cutoff will be considered 20xx.\n * @type {number}\n */\n static get twoDigitCutoffYear() {\n return twoDigitCutoffYear;\n }\n\n /**\n * Set the cutoff year for whether a 2-digit year string is interpreted in the current or previous century. Numbers higher than the cutoff will be considered to mean 19xx and numbers lower or equal to the cutoff will be considered 20xx.\n * @type {number}\n * @example Settings.twoDigitCutoffYear = 0 // all 'yy' are interpreted as 20th century\n * @example Settings.twoDigitCutoffYear = 99 // all 'yy' are interpreted as 21st century\n * @example Settings.twoDigitCutoffYear = 50 // '49' -> 2049; '50' -> 1950\n * @example Settings.twoDigitCutoffYear = 1950 // interpreted as 50\n * @example Settings.twoDigitCutoffYear = 2050 // ALSO interpreted as 50\n */\n static set twoDigitCutoffYear(cutoffYear) {\n twoDigitCutoffYear = cutoffYear % 100;\n }\n\n /**\n * Get whether Luxon will throw when it encounters invalid DateTimes, Durations, or Intervals\n * @type {boolean}\n */\n static get throwOnInvalid() {\n return throwOnInvalid;\n }\n\n /**\n * Set whether Luxon will throw when it encounters invalid DateTimes, Durations, or Intervals\n * @type {boolean}\n */\n static set throwOnInvalid(t) {\n throwOnInvalid = t;\n }\n\n /**\n * Reset Luxon's global caches. Should only be necessary in testing scenarios.\n * @return {void}\n */\n static resetCaches() {\n Locale.resetCache();\n IANAZone.resetCache();\n DateTime.resetCache();\n resetDigitRegexCache();\n }\n}\n","export default class Invalid {\n constructor(reason, explanation) {\n this.reason = reason;\n this.explanation = explanation;\n }\n\n toMessage() {\n if (this.explanation) {\n return `${this.reason}: ${this.explanation}`;\n } else {\n return this.reason;\n }\n }\n}\n","import {\n integerBetween,\n isLeapYear,\n timeObject,\n daysInYear,\n daysInMonth,\n weeksInWeekYear,\n isInteger,\n isUndefined,\n} from \"./util.js\";\nimport Invalid from \"./invalid.js\";\nimport { ConflictingSpecificationError } from \"../errors.js\";\n\nconst nonLeapLadder = [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334],\n leapLadder = [0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335];\n\nfunction unitOutOfRange(unit, value) {\n return new Invalid(\n \"unit out of range\",\n `you specified ${value} (of type ${typeof value}) as a ${unit}, which is invalid`\n );\n}\n\nexport function dayOfWeek(year, month, day) {\n const d = new Date(Date.UTC(year, month - 1, day));\n\n if (year < 100 && year >= 0) {\n d.setUTCFullYear(d.getUTCFullYear() - 1900);\n }\n\n const js = d.getUTCDay();\n\n return js === 0 ? 7 : js;\n}\n\nfunction computeOrdinal(year, month, day) {\n return day + (isLeapYear(year) ? leapLadder : nonLeapLadder)[month - 1];\n}\n\nfunction uncomputeOrdinal(year, ordinal) {\n const table = isLeapYear(year) ? leapLadder : nonLeapLadder,\n month0 = table.findIndex((i) => i < ordinal),\n day = ordinal - table[month0];\n return { month: month0 + 1, day };\n}\n\nexport function isoWeekdayToLocal(isoWeekday, startOfWeek) {\n return ((isoWeekday - startOfWeek + 7) % 7) + 1;\n}\n\n/**\n * @private\n */\n\nexport function gregorianToWeek(gregObj, minDaysInFirstWeek = 4, startOfWeek = 1) {\n const { year, month, day } = gregObj,\n ordinal = computeOrdinal(year, month, day),\n weekday = isoWeekdayToLocal(dayOfWeek(year, month, day), startOfWeek);\n\n let weekNumber = Math.floor((ordinal - weekday + 14 - minDaysInFirstWeek) / 7),\n weekYear;\n\n if (weekNumber < 1) {\n weekYear = year - 1;\n weekNumber = weeksInWeekYear(weekYear, minDaysInFirstWeek, startOfWeek);\n } else if (weekNumber > weeksInWeekYear(year, minDaysInFirstWeek, startOfWeek)) {\n weekYear = year + 1;\n weekNumber = 1;\n } else {\n weekYear = year;\n }\n\n return { weekYear, weekNumber, weekday, ...timeObject(gregObj) };\n}\n\nexport function weekToGregorian(weekData, minDaysInFirstWeek = 4, startOfWeek = 1) {\n const { weekYear, weekNumber, weekday } = weekData,\n weekdayOfJan4 = isoWeekdayToLocal(dayOfWeek(weekYear, 1, minDaysInFirstWeek), startOfWeek),\n yearInDays = daysInYear(weekYear);\n\n let ordinal = weekNumber * 7 + weekday - weekdayOfJan4 - 7 + minDaysInFirstWeek,\n year;\n\n if (ordinal < 1) {\n year = weekYear - 1;\n ordinal += daysInYear(year);\n } else if (ordinal > yearInDays) {\n year = weekYear + 1;\n ordinal -= daysInYear(weekYear);\n } else {\n year = weekYear;\n }\n\n const { month, day } = uncomputeOrdinal(year, ordinal);\n return { year, month, day, ...timeObject(weekData) };\n}\n\nexport function gregorianToOrdinal(gregData) {\n const { year, month, day } = gregData;\n const ordinal = computeOrdinal(year, month, day);\n return { year, ordinal, ...timeObject(gregData) };\n}\n\nexport function ordinalToGregorian(ordinalData) {\n const { year, ordinal } = ordinalData;\n const { month, day } = uncomputeOrdinal(year, ordinal);\n return { year, month, day, ...timeObject(ordinalData) };\n}\n\n/**\n * Check if local week units like localWeekday are used in obj.\n * If so, validates that they are not mixed with ISO week units and then copies them to the normal week unit properties.\n * Modifies obj in-place!\n * @param obj the object values\n */\nexport function usesLocalWeekValues(obj, loc) {\n const hasLocaleWeekData =\n !isUndefined(obj.localWeekday) ||\n !isUndefined(obj.localWeekNumber) ||\n !isUndefined(obj.localWeekYear);\n if (hasLocaleWeekData) {\n const hasIsoWeekData =\n !isUndefined(obj.weekday) || !isUndefined(obj.weekNumber) || !isUndefined(obj.weekYear);\n\n if (hasIsoWeekData) {\n throw new ConflictingSpecificationError(\n \"Cannot mix locale-based week fields with ISO-based week fields\"\n );\n }\n if (!isUndefined(obj.localWeekday)) obj.weekday = obj.localWeekday;\n if (!isUndefined(obj.localWeekNumber)) obj.weekNumber = obj.localWeekNumber;\n if (!isUndefined(obj.localWeekYear)) obj.weekYear = obj.localWeekYear;\n delete obj.localWeekday;\n delete obj.localWeekNumber;\n delete obj.localWeekYear;\n return {\n minDaysInFirstWeek: loc.getMinDaysInFirstWeek(),\n startOfWeek: loc.getStartOfWeek(),\n };\n } else {\n return { minDaysInFirstWeek: 4, startOfWeek: 1 };\n }\n}\n\nexport function hasInvalidWeekData(obj, minDaysInFirstWeek = 4, startOfWeek = 1) {\n const validYear = isInteger(obj.weekYear),\n validWeek = integerBetween(\n obj.weekNumber,\n 1,\n weeksInWeekYear(obj.weekYear, minDaysInFirstWeek, startOfWeek)\n ),\n validWeekday = integerBetween(obj.weekday, 1, 7);\n\n if (!validYear) {\n return unitOutOfRange(\"weekYear\", obj.weekYear);\n } else if (!validWeek) {\n return unitOutOfRange(\"week\", obj.weekNumber);\n } else if (!validWeekday) {\n return unitOutOfRange(\"weekday\", obj.weekday);\n } else return false;\n}\n\nexport function hasInvalidOrdinalData(obj) {\n const validYear = isInteger(obj.year),\n validOrdinal = integerBetween(obj.ordinal, 1, daysInYear(obj.year));\n\n if (!validYear) {\n return unitOutOfRange(\"year\", obj.year);\n } else if (!validOrdinal) {\n return unitOutOfRange(\"ordinal\", obj.ordinal);\n } else return false;\n}\n\nexport function hasInvalidGregorianData(obj) {\n const validYear = isInteger(obj.year),\n validMonth = integerBetween(obj.month, 1, 12),\n validDay = integerBetween(obj.day, 1, daysInMonth(obj.year, obj.month));\n\n if (!validYear) {\n return unitOutOfRange(\"year\", obj.year);\n } else if (!validMonth) {\n return unitOutOfRange(\"month\", obj.month);\n } else if (!validDay) {\n return unitOutOfRange(\"day\", obj.day);\n } else return false;\n}\n\nexport function hasInvalidTimeData(obj) {\n const { hour, minute, second, millisecond } = obj;\n const validHour =\n integerBetween(hour, 0, 23) ||\n (hour === 24 && minute === 0 && second === 0 && millisecond === 0),\n validMinute = integerBetween(minute, 0, 59),\n validSecond = integerBetween(second, 0, 59),\n validMillisecond = integerBetween(millisecond, 0, 999);\n\n if (!validHour) {\n return unitOutOfRange(\"hour\", hour);\n } else if (!validMinute) {\n return unitOutOfRange(\"minute\", minute);\n } else if (!validSecond) {\n return unitOutOfRange(\"second\", second);\n } else if (!validMillisecond) {\n return unitOutOfRange(\"millisecond\", millisecond);\n } else return false;\n}\n","/*\n This is just a junk drawer, containing anything used across multiple classes.\n Because Luxon is small(ish), this should stay small and we won't worry about splitting\n it up into, say, parsingUtil.js and basicUtil.js and so on. But they are divided up by feature area.\n*/\n\nimport { InvalidArgumentError } from \"../errors.js\";\nimport Settings from \"../settings.js\";\nimport { dayOfWeek, isoWeekdayToLocal } from \"./conversions.js\";\n\n/**\n * @private\n */\n\n// TYPES\n\nexport function isUndefined(o) {\n return typeof o === \"undefined\";\n}\n\nexport function isNumber(o) {\n return typeof o === \"number\";\n}\n\nexport function isInteger(o) {\n return typeof o === \"number\" && o % 1 === 0;\n}\n\nexport function isString(o) {\n return typeof o === \"string\";\n}\n\nexport function isDate(o) {\n return Object.prototype.toString.call(o) === \"[object Date]\";\n}\n\n// CAPABILITIES\n\nexport function hasRelative() {\n try {\n return typeof Intl !== \"undefined\" && !!Intl.RelativeTimeFormat;\n } catch (e) {\n return false;\n }\n}\n\nexport function hasLocaleWeekInfo() {\n try {\n return (\n typeof Intl !== \"undefined\" &&\n !!Intl.Locale &&\n (\"weekInfo\" in Intl.Locale.prototype || \"getWeekInfo\" in Intl.Locale.prototype)\n );\n } catch (e) {\n return false;\n }\n}\n\n// OBJECTS AND ARRAYS\n\nexport function maybeArray(thing) {\n return Array.isArray(thing) ? thing : [thing];\n}\n\nexport function bestBy(arr, by, compare) {\n if (arr.length === 0) {\n return undefined;\n }\n return arr.reduce((best, next) => {\n const pair = [by(next), next];\n if (!best) {\n return pair;\n } else if (compare(best[0], pair[0]) === best[0]) {\n return best;\n } else {\n return pair;\n }\n }, null)[1];\n}\n\nexport function pick(obj, keys) {\n return keys.reduce((a, k) => {\n a[k] = obj[k];\n return a;\n }, {});\n}\n\nexport function hasOwnProperty(obj, prop) {\n return Object.prototype.hasOwnProperty.call(obj, prop);\n}\n\nexport function validateWeekSettings(settings) {\n if (settings == null) {\n return null;\n } else if (typeof settings !== \"object\") {\n throw new InvalidArgumentError(\"Week settings must be an object\");\n } else {\n if (\n !integerBetween(settings.firstDay, 1, 7) ||\n !integerBetween(settings.minimalDays, 1, 7) ||\n !Array.isArray(settings.weekend) ||\n settings.weekend.some((v) => !integerBetween(v, 1, 7))\n ) {\n throw new InvalidArgumentError(\"Invalid week settings\");\n }\n return {\n firstDay: settings.firstDay,\n minimalDays: settings.minimalDays,\n weekend: Array.from(settings.weekend),\n };\n }\n}\n\n// NUMBERS AND STRINGS\n\nexport function integerBetween(thing, bottom, top) {\n return isInteger(thing) && thing >= bottom && thing <= top;\n}\n\n// x % n but takes the sign of n instead of x\nexport function floorMod(x, n) {\n return x - n * Math.floor(x / n);\n}\n\nexport function padStart(input, n = 2) {\n const isNeg = input < 0;\n let padded;\n if (isNeg) {\n padded = \"-\" + (\"\" + -input).padStart(n, \"0\");\n } else {\n padded = (\"\" + input).padStart(n, \"0\");\n }\n return padded;\n}\n\nexport function parseInteger(string) {\n if (isUndefined(string) || string === null || string === \"\") {\n return undefined;\n } else {\n return parseInt(string, 10);\n }\n}\n\nexport function parseFloating(string) {\n if (isUndefined(string) || string === null || string === \"\") {\n return undefined;\n } else {\n return parseFloat(string);\n }\n}\n\nexport function parseMillis(fraction) {\n // Return undefined (instead of 0) in these cases, where fraction is not set\n if (isUndefined(fraction) || fraction === null || fraction === \"\") {\n return undefined;\n } else {\n const f = parseFloat(\"0.\" + fraction) * 1000;\n return Math.floor(f);\n }\n}\n\nexport function roundTo(number, digits, towardZero = false) {\n const factor = 10 ** digits,\n rounder = towardZero ? Math.trunc : Math.round;\n return rounder(number * factor) / factor;\n}\n\n// DATE BASICS\n\nexport function isLeapYear(year) {\n return year % 4 === 0 && (year % 100 !== 0 || year % 400 === 0);\n}\n\nexport function daysInYear(year) {\n return isLeapYear(year) ? 366 : 365;\n}\n\nexport function daysInMonth(year, month) {\n const modMonth = floorMod(month - 1, 12) + 1,\n modYear = year + (month - modMonth) / 12;\n\n if (modMonth === 2) {\n return isLeapYear(modYear) ? 29 : 28;\n } else {\n return [31, null, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31][modMonth - 1];\n }\n}\n\n// convert a calendar object to a local timestamp (epoch, but with the offset baked in)\nexport function objToLocalTS(obj) {\n let d = Date.UTC(\n obj.year,\n obj.month - 1,\n obj.day,\n obj.hour,\n obj.minute,\n obj.second,\n obj.millisecond\n );\n\n // for legacy reasons, years between 0 and 99 are interpreted as 19XX; revert that\n if (obj.year < 100 && obj.year >= 0) {\n d = new Date(d);\n // set the month and day again, this is necessary because year 2000 is a leap year, but year 100 is not\n // so if obj.year is in 99, but obj.day makes it roll over into year 100,\n // the calculations done by Date.UTC are using year 2000 - which is incorrect\n d.setUTCFullYear(obj.year, obj.month - 1, obj.day);\n }\n return +d;\n}\n\n// adapted from moment.js: https://github.com/moment/moment/blob/000ac1800e620f770f4eb31b5ae908f6167b0ab2/src/lib/units/week-calendar-utils.js\nfunction firstWeekOffset(year, minDaysInFirstWeek, startOfWeek) {\n const fwdlw = isoWeekdayToLocal(dayOfWeek(year, 1, minDaysInFirstWeek), startOfWeek);\n return -fwdlw + minDaysInFirstWeek - 1;\n}\n\nexport function weeksInWeekYear(weekYear, minDaysInFirstWeek = 4, startOfWeek = 1) {\n const weekOffset = firstWeekOffset(weekYear, minDaysInFirstWeek, startOfWeek);\n const weekOffsetNext = firstWeekOffset(weekYear + 1, minDaysInFirstWeek, startOfWeek);\n return (daysInYear(weekYear) - weekOffset + weekOffsetNext) / 7;\n}\n\nexport function untruncateYear(year) {\n if (year > 99) {\n return year;\n } else return year > Settings.twoDigitCutoffYear ? 1900 + year : 2000 + year;\n}\n\n// PARSING\n\nexport function parseZoneInfo(ts, offsetFormat, locale, timeZone = null) {\n const date = new Date(ts),\n intlOpts = {\n hourCycle: \"h23\",\n year: \"numeric\",\n month: \"2-digit\",\n day: \"2-digit\",\n hour: \"2-digit\",\n minute: \"2-digit\",\n };\n\n if (timeZone) {\n intlOpts.timeZone = timeZone;\n }\n\n const modified = { timeZoneName: offsetFormat, ...intlOpts };\n\n const parsed = new Intl.DateTimeFormat(locale, modified)\n .formatToParts(date)\n .find((m) => m.type.toLowerCase() === \"timezonename\");\n return parsed ? parsed.value : null;\n}\n\n// signedOffset('-5', '30') -> -330\nexport function signedOffset(offHourStr, offMinuteStr) {\n let offHour = parseInt(offHourStr, 10);\n\n // don't || this because we want to preserve -0\n if (Number.isNaN(offHour)) {\n offHour = 0;\n }\n\n const offMin = parseInt(offMinuteStr, 10) || 0,\n offMinSigned = offHour < 0 || Object.is(offHour, -0) ? -offMin : offMin;\n return offHour * 60 + offMinSigned;\n}\n\n// COERCION\n\nexport function asNumber(value) {\n const numericValue = Number(value);\n if (typeof value === \"boolean\" || value === \"\" || Number.isNaN(numericValue))\n throw new InvalidArgumentError(`Invalid unit value ${value}`);\n return numericValue;\n}\n\nexport function normalizeObject(obj, normalizer) {\n const normalized = {};\n for (const u in obj) {\n if (hasOwnProperty(obj, u)) {\n const v = obj[u];\n if (v === undefined || v === null) continue;\n normalized[normalizer(u)] = asNumber(v);\n }\n }\n return normalized;\n}\n\n/**\n * Returns the offset's value as a string\n * @param {number} ts - Epoch milliseconds for which to get the offset\n * @param {string} format - What style of offset to return.\n * Accepts 'narrow', 'short', or 'techie'. Returning '+6', '+06:00', or '+0600' respectively\n * @return {string}\n */\nexport function formatOffset(offset, format) {\n const hours = Math.trunc(Math.abs(offset / 60)),\n minutes = Math.trunc(Math.abs(offset % 60)),\n sign = offset >= 0 ? \"+\" : \"-\";\n\n switch (format) {\n case \"short\":\n return `${sign}${padStart(hours, 2)}:${padStart(minutes, 2)}`;\n case \"narrow\":\n return `${sign}${hours}${minutes > 0 ? `:${minutes}` : \"\"}`;\n case \"techie\":\n return `${sign}${padStart(hours, 2)}${padStart(minutes, 2)}`;\n default:\n throw new RangeError(`Value format ${format} is out of range for property format`);\n }\n}\n\nexport function timeObject(obj) {\n return pick(obj, [\"hour\", \"minute\", \"second\", \"millisecond\"]);\n}\n","import * as Formats from \"./formats.js\";\nimport { pick } from \"./util.js\";\n\nfunction stringify(obj) {\n return JSON.stringify(obj, Object.keys(obj).sort());\n}\n\n/**\n * @private\n */\n\nexport const monthsLong = [\n \"January\",\n \"February\",\n \"March\",\n \"April\",\n \"May\",\n \"June\",\n \"July\",\n \"August\",\n \"September\",\n \"October\",\n \"November\",\n \"December\",\n];\n\nexport const monthsShort = [\n \"Jan\",\n \"Feb\",\n \"Mar\",\n \"Apr\",\n \"May\",\n \"Jun\",\n \"Jul\",\n \"Aug\",\n \"Sep\",\n \"Oct\",\n \"Nov\",\n \"Dec\",\n];\n\nexport const monthsNarrow = [\"J\", \"F\", \"M\", \"A\", \"M\", \"J\", \"J\", \"A\", \"S\", \"O\", \"N\", \"D\"];\n\nexport function months(length) {\n switch (length) {\n case \"narrow\":\n return [...monthsNarrow];\n case \"short\":\n return [...monthsShort];\n case \"long\":\n return [...monthsLong];\n case \"numeric\":\n return [\"1\", \"2\", \"3\", \"4\", \"5\", \"6\", \"7\", \"8\", \"9\", \"10\", \"11\", \"12\"];\n case \"2-digit\":\n return [\"01\", \"02\", \"03\", \"04\", \"05\", \"06\", \"07\", \"08\", \"09\", \"10\", \"11\", \"12\"];\n default:\n return null;\n }\n}\n\nexport const weekdaysLong = [\n \"Monday\",\n \"Tuesday\",\n \"Wednesday\",\n \"Thursday\",\n \"Friday\",\n \"Saturday\",\n \"Sunday\",\n];\n\nexport const weekdaysShort = [\"Mon\", \"Tue\", \"Wed\", \"Thu\", \"Fri\", \"Sat\", \"Sun\"];\n\nexport const weekdaysNarrow = [\"M\", \"T\", \"W\", \"T\", \"F\", \"S\", \"S\"];\n\nexport function weekdays(length) {\n switch (length) {\n case \"narrow\":\n return [...weekdaysNarrow];\n case \"short\":\n return [...weekdaysShort];\n case \"long\":\n return [...weekdaysLong];\n case \"numeric\":\n return [\"1\", \"2\", \"3\", \"4\", \"5\", \"6\", \"7\"];\n default:\n return null;\n }\n}\n\nexport const meridiems = [\"AM\", \"PM\"];\n\nexport const erasLong = [\"Before Christ\", \"Anno Domini\"];\n\nexport const erasShort = [\"BC\", \"AD\"];\n\nexport const erasNarrow = [\"B\", \"A\"];\n\nexport function eras(length) {\n switch (length) {\n case \"narrow\":\n return [...erasNarrow];\n case \"short\":\n return [...erasShort];\n case \"long\":\n return [...erasLong];\n default:\n return null;\n }\n}\n\nexport function meridiemForDateTime(dt) {\n return meridiems[dt.hour < 12 ? 0 : 1];\n}\n\nexport function weekdayForDateTime(dt, length) {\n return weekdays(length)[dt.weekday - 1];\n}\n\nexport function monthForDateTime(dt, length) {\n return months(length)[dt.month - 1];\n}\n\nexport function eraForDateTime(dt, length) {\n return eras(length)[dt.year < 0 ? 0 : 1];\n}\n\nexport function formatRelativeTime(unit, count, numeric = \"always\", narrow = false) {\n const units = {\n years: [\"year\", \"yr.\"],\n quarters: [\"quarter\", \"qtr.\"],\n months: [\"month\", \"mo.\"],\n weeks: [\"week\", \"wk.\"],\n days: [\"day\", \"day\", \"days\"],\n hours: [\"hour\", \"hr.\"],\n minutes: [\"minute\", \"min.\"],\n seconds: [\"second\", \"sec.\"],\n };\n\n const lastable = [\"hours\", \"minutes\", \"seconds\"].indexOf(unit) === -1;\n\n if (numeric === \"auto\" && lastable) {\n const isDay = unit === \"days\";\n switch (count) {\n case 1:\n return isDay ? \"tomorrow\" : `next ${units[unit][0]}`;\n case -1:\n return isDay ? \"yesterday\" : `last ${units[unit][0]}`;\n case 0:\n return isDay ? \"today\" : `this ${units[unit][0]}`;\n default: // fall through\n }\n }\n\n const isInPast = Object.is(count, -0) || count < 0,\n fmtValue = Math.abs(count),\n singular = fmtValue === 1,\n lilUnits = units[unit],\n fmtUnit = narrow\n ? singular\n ? lilUnits[1]\n : lilUnits[2] || lilUnits[1]\n : singular\n ? units[unit][0]\n : unit;\n return isInPast ? `${fmtValue} ${fmtUnit} ago` : `in ${fmtValue} ${fmtUnit}`;\n}\n\nexport function formatString(knownFormat) {\n // these all have the offsets removed because we don't have access to them\n // without all the intl stuff this is backfilling\n const filtered = pick(knownFormat, [\n \"weekday\",\n \"era\",\n \"year\",\n \"month\",\n \"day\",\n \"hour\",\n \"minute\",\n \"second\",\n \"timeZoneName\",\n \"hourCycle\",\n ]),\n key = stringify(filtered),\n dateTimeHuge = \"EEEE, LLLL d, yyyy, h:mm a\";\n switch (key) {\n case stringify(Formats.DATE_SHORT):\n return \"M/d/yyyy\";\n case stringify(Formats.DATE_MED):\n return \"LLL d, yyyy\";\n case stringify(Formats.DATE_MED_WITH_WEEKDAY):\n return \"EEE, LLL d, yyyy\";\n case stringify(Formats.DATE_FULL):\n return \"LLLL d, yyyy\";\n case stringify(Formats.DATE_HUGE):\n return \"EEEE, LLLL d, yyyy\";\n case stringify(Formats.TIME_SIMPLE):\n return \"h:mm a\";\n case stringify(Formats.TIME_WITH_SECONDS):\n return \"h:mm:ss a\";\n case stringify(Formats.TIME_WITH_SHORT_OFFSET):\n return \"h:mm a\";\n case stringify(Formats.TIME_WITH_LONG_OFFSET):\n return \"h:mm a\";\n case stringify(Formats.TIME_24_SIMPLE):\n return \"HH:mm\";\n case stringify(Formats.TIME_24_WITH_SECONDS):\n return \"HH:mm:ss\";\n case stringify(Formats.TIME_24_WITH_SHORT_OFFSET):\n return \"HH:mm\";\n case stringify(Formats.TIME_24_WITH_LONG_OFFSET):\n return \"HH:mm\";\n case stringify(Formats.DATETIME_SHORT):\n return \"M/d/yyyy, h:mm a\";\n case stringify(Formats.DATETIME_MED):\n return \"LLL d, yyyy, h:mm a\";\n case stringify(Formats.DATETIME_FULL):\n return \"LLLL d, yyyy, h:mm a\";\n case stringify(Formats.DATETIME_HUGE):\n return dateTimeHuge;\n case stringify(Formats.DATETIME_SHORT_WITH_SECONDS):\n return \"M/d/yyyy, h:mm:ss a\";\n case stringify(Formats.DATETIME_MED_WITH_SECONDS):\n return \"LLL d, yyyy, h:mm:ss a\";\n case stringify(Formats.DATETIME_MED_WITH_WEEKDAY):\n return \"EEE, d LLL yyyy, h:mm a\";\n case stringify(Formats.DATETIME_FULL_WITH_SECONDS):\n return \"LLLL d, yyyy, h:mm:ss a\";\n case stringify(Formats.DATETIME_HUGE_WITH_SECONDS):\n return \"EEEE, LLLL d, yyyy, h:mm:ss a\";\n default:\n return dateTimeHuge;\n }\n}\n","import * as English from \"./english.js\";\nimport * as Formats from \"./formats.js\";\nimport { padStart } from \"./util.js\";\n\nfunction stringifyTokens(splits, tokenToString) {\n let s = \"\";\n for (const token of splits) {\n if (token.literal) {\n s += token.val;\n } else {\n s += tokenToString(token.val);\n }\n }\n return s;\n}\n\nconst macroTokenToFormatOpts = {\n D: Formats.DATE_SHORT,\n DD: Formats.DATE_MED,\n DDD: Formats.DATE_FULL,\n DDDD: Formats.DATE_HUGE,\n t: Formats.TIME_SIMPLE,\n tt: Formats.TIME_WITH_SECONDS,\n ttt: Formats.TIME_WITH_SHORT_OFFSET,\n tttt: Formats.TIME_WITH_LONG_OFFSET,\n T: Formats.TIME_24_SIMPLE,\n TT: Formats.TIME_24_WITH_SECONDS,\n TTT: Formats.TIME_24_WITH_SHORT_OFFSET,\n TTTT: Formats.TIME_24_WITH_LONG_OFFSET,\n f: Formats.DATETIME_SHORT,\n ff: Formats.DATETIME_MED,\n fff: Formats.DATETIME_FULL,\n ffff: Formats.DATETIME_HUGE,\n F: Formats.DATETIME_SHORT_WITH_SECONDS,\n FF: Formats.DATETIME_MED_WITH_SECONDS,\n FFF: Formats.DATETIME_FULL_WITH_SECONDS,\n FFFF: Formats.DATETIME_HUGE_WITH_SECONDS,\n};\n\n/**\n * @private\n */\n\nexport default class Formatter {\n static create(locale, opts = {}) {\n return new Formatter(locale, opts);\n }\n\n static parseFormat(fmt) {\n // white-space is always considered a literal in user-provided formats\n // the \" \" token has a special meaning (see unitForToken)\n\n let current = null,\n currentFull = \"\",\n bracketed = false;\n const splits = [];\n for (let i = 0; i < fmt.length; i++) {\n const c = fmt.charAt(i);\n if (c === \"'\") {\n if (currentFull.length > 0) {\n splits.push({ literal: bracketed || /^\\s+$/.test(currentFull), val: currentFull });\n }\n current = null;\n currentFull = \"\";\n bracketed = !bracketed;\n } else if (bracketed) {\n currentFull += c;\n } else if (c === current) {\n currentFull += c;\n } else {\n if (currentFull.length > 0) {\n splits.push({ literal: /^\\s+$/.test(currentFull), val: currentFull });\n }\n currentFull = c;\n current = c;\n }\n }\n\n if (currentFull.length > 0) {\n splits.push({ literal: bracketed || /^\\s+$/.test(currentFull), val: currentFull });\n }\n\n return splits;\n }\n\n static macroTokenToFormatOpts(token) {\n return macroTokenToFormatOpts[token];\n }\n\n constructor(locale, formatOpts) {\n this.opts = formatOpts;\n this.loc = locale;\n this.systemLoc = null;\n }\n\n formatWithSystemDefault(dt, opts) {\n if (this.systemLoc === null) {\n this.systemLoc = this.loc.redefaultToSystem();\n }\n const df = this.systemLoc.dtFormatter(dt, { ...this.opts, ...opts });\n return df.format();\n }\n\n dtFormatter(dt, opts = {}) {\n return this.loc.dtFormatter(dt, { ...this.opts, ...opts });\n }\n\n formatDateTime(dt, opts) {\n return this.dtFormatter(dt, opts).format();\n }\n\n formatDateTimeParts(dt, opts) {\n return this.dtFormatter(dt, opts).formatToParts();\n }\n\n formatInterval(interval, opts) {\n const df = this.dtFormatter(interval.start, opts);\n return df.dtf.formatRange(interval.start.toJSDate(), interval.end.toJSDate());\n }\n\n resolvedOptions(dt, opts) {\n return this.dtFormatter(dt, opts).resolvedOptions();\n }\n\n num(n, p = 0) {\n // we get some perf out of doing this here, annoyingly\n if (this.opts.forceSimple) {\n return padStart(n, p);\n }\n\n const opts = { ...this.opts };\n\n if (p > 0) {\n opts.padTo = p;\n }\n\n return this.loc.numberFormatter(opts).format(n);\n }\n\n formatDateTimeFromString(dt, fmt) {\n const knownEnglish = this.loc.listingMode() === \"en\",\n useDateTimeFormatter = this.loc.outputCalendar && this.loc.outputCalendar !== \"gregory\",\n string = (opts, extract) => this.loc.extract(dt, opts, extract),\n formatOffset = (opts) => {\n if (dt.isOffsetFixed && dt.offset === 0 && opts.allowZ) {\n return \"Z\";\n }\n\n return dt.isValid ? dt.zone.formatOffset(dt.ts, opts.format) : \"\";\n },\n meridiem = () =>\n knownEnglish\n ? English.meridiemForDateTime(dt)\n : string({ hour: \"numeric\", hourCycle: \"h12\" }, \"dayperiod\"),\n month = (length, standalone) =>\n knownEnglish\n ? English.monthForDateTime(dt, length)\n : string(standalone ? { month: length } : { month: length, day: \"numeric\" }, \"month\"),\n weekday = (length, standalone) =>\n knownEnglish\n ? English.weekdayForDateTime(dt, length)\n : string(\n standalone ? { weekday: length } : { weekday: length, month: \"long\", day: \"numeric\" },\n \"weekday\"\n ),\n maybeMacro = (token) => {\n const formatOpts = Formatter.macroTokenToFormatOpts(token);\n if (formatOpts) {\n return this.formatWithSystemDefault(dt, formatOpts);\n } else {\n return token;\n }\n },\n era = (length) =>\n knownEnglish ? English.eraForDateTime(dt, length) : string({ era: length }, \"era\"),\n tokenToString = (token) => {\n // Where possible: https://cldr.unicode.org/translation/date-time/date-time-symbols\n switch (token) {\n // ms\n case \"S\":\n return this.num(dt.millisecond);\n case \"u\":\n // falls through\n case \"SSS\":\n return this.num(dt.millisecond, 3);\n // seconds\n case \"s\":\n return this.num(dt.second);\n case \"ss\":\n return this.num(dt.second, 2);\n // fractional seconds\n case \"uu\":\n return this.num(Math.floor(dt.millisecond / 10), 2);\n case \"uuu\":\n return this.num(Math.floor(dt.millisecond / 100));\n // minutes\n case \"m\":\n return this.num(dt.minute);\n case \"mm\":\n return this.num(dt.minute, 2);\n // hours\n case \"h\":\n return this.num(dt.hour % 12 === 0 ? 12 : dt.hour % 12);\n case \"hh\":\n return this.num(dt.hour % 12 === 0 ? 12 : dt.hour % 12, 2);\n case \"H\":\n return this.num(dt.hour);\n case \"HH\":\n return this.num(dt.hour, 2);\n // offset\n case \"Z\":\n // like +6\n return formatOffset({ format: \"narrow\", allowZ: this.opts.allowZ });\n case \"ZZ\":\n // like +06:00\n return formatOffset({ format: \"short\", allowZ: this.opts.allowZ });\n case \"ZZZ\":\n // like +0600\n return formatOffset({ format: \"techie\", allowZ: this.opts.allowZ });\n case \"ZZZZ\":\n // like EST\n return dt.zone.offsetName(dt.ts, { format: \"short\", locale: this.loc.locale });\n case \"ZZZZZ\":\n // like Eastern Standard Time\n return dt.zone.offsetName(dt.ts, { format: \"long\", locale: this.loc.locale });\n // zone\n case \"z\":\n // like America/New_York\n return dt.zoneName;\n // meridiems\n case \"a\":\n return meridiem();\n // dates\n case \"d\":\n return useDateTimeFormatter ? string({ day: \"numeric\" }, \"day\") : this.num(dt.day);\n case \"dd\":\n return useDateTimeFormatter ? string({ day: \"2-digit\" }, \"day\") : this.num(dt.day, 2);\n // weekdays - standalone\n case \"c\":\n // like 1\n return this.num(dt.weekday);\n case \"ccc\":\n // like 'Tues'\n return weekday(\"short\", true);\n case \"cccc\":\n // like 'Tuesday'\n return weekday(\"long\", true);\n case \"ccccc\":\n // like 'T'\n return weekday(\"narrow\", true);\n // weekdays - format\n case \"E\":\n // like 1\n return this.num(dt.weekday);\n case \"EEE\":\n // like 'Tues'\n return weekday(\"short\", false);\n case \"EEEE\":\n // like 'Tuesday'\n return weekday(\"long\", false);\n case \"EEEEE\":\n // like 'T'\n return weekday(\"narrow\", false);\n // months - standalone\n case \"L\":\n // like 1\n return useDateTimeFormatter\n ? string({ month: \"numeric\", day: \"numeric\" }, \"month\")\n : this.num(dt.month);\n case \"LL\":\n // like 01, doesn't seem to work\n return useDateTimeFormatter\n ? string({ month: \"2-digit\", day: \"numeric\" }, \"month\")\n : this.num(dt.month, 2);\n case \"LLL\":\n // like Jan\n return month(\"short\", true);\n case \"LLLL\":\n // like January\n return month(\"long\", true);\n case \"LLLLL\":\n // like J\n return month(\"narrow\", true);\n // months - format\n case \"M\":\n // like 1\n return useDateTimeFormatter\n ? string({ month: \"numeric\" }, \"month\")\n : this.num(dt.month);\n case \"MM\":\n // like 01\n return useDateTimeFormatter\n ? string({ month: \"2-digit\" }, \"month\")\n : this.num(dt.month, 2);\n case \"MMM\":\n // like Jan\n return month(\"short\", false);\n case \"MMMM\":\n // like January\n return month(\"long\", false);\n case \"MMMMM\":\n // like J\n return month(\"narrow\", false);\n // years\n case \"y\":\n // like 2014\n return useDateTimeFormatter ? string({ year: \"numeric\" }, \"year\") : this.num(dt.year);\n case \"yy\":\n // like 14\n return useDateTimeFormatter\n ? string({ year: \"2-digit\" }, \"year\")\n : this.num(dt.year.toString().slice(-2), 2);\n case \"yyyy\":\n // like 0012\n return useDateTimeFormatter\n ? string({ year: \"numeric\" }, \"year\")\n : this.num(dt.year, 4);\n case \"yyyyyy\":\n // like 000012\n return useDateTimeFormatter\n ? string({ year: \"numeric\" }, \"year\")\n : this.num(dt.year, 6);\n // eras\n case \"G\":\n // like AD\n return era(\"short\");\n case \"GG\":\n // like Anno Domini\n return era(\"long\");\n case \"GGGGG\":\n return era(\"narrow\");\n case \"kk\":\n return this.num(dt.weekYear.toString().slice(-2), 2);\n case \"kkkk\":\n return this.num(dt.weekYear, 4);\n case \"W\":\n return this.num(dt.weekNumber);\n case \"WW\":\n return this.num(dt.weekNumber, 2);\n case \"n\":\n return this.num(dt.localWeekNumber);\n case \"nn\":\n return this.num(dt.localWeekNumber, 2);\n case \"ii\":\n return this.num(dt.localWeekYear.toString().slice(-2), 2);\n case \"iiii\":\n return this.num(dt.localWeekYear, 4);\n case \"o\":\n return this.num(dt.ordinal);\n case \"ooo\":\n return this.num(dt.ordinal, 3);\n case \"q\":\n // like 1\n return this.num(dt.quarter);\n case \"qq\":\n // like 01\n return this.num(dt.quarter, 2);\n case \"X\":\n return this.num(Math.floor(dt.ts / 1000));\n case \"x\":\n return this.num(dt.ts);\n default:\n return maybeMacro(token);\n }\n };\n\n return stringifyTokens(Formatter.parseFormat(fmt), tokenToString);\n }\n\n formatDurationFromString(dur, fmt) {\n const tokenToField = (token) => {\n switch (token[0]) {\n case \"S\":\n return \"millisecond\";\n case \"s\":\n return \"second\";\n case \"m\":\n return \"minute\";\n case \"h\":\n return \"hour\";\n case \"d\":\n return \"day\";\n case \"w\":\n return \"week\";\n case \"M\":\n return \"month\";\n case \"y\":\n return \"year\";\n default:\n return null;\n }\n },\n tokenToString = (lildur) => (token) => {\n const mapped = tokenToField(token);\n if (mapped) {\n return this.num(lildur.get(mapped), token.length);\n } else {\n return token;\n }\n },\n tokens = Formatter.parseFormat(fmt),\n realTokens = tokens.reduce(\n (found, { literal, val }) => (literal ? found : found.concat(val)),\n []\n ),\n collapsed = dur.shiftTo(...realTokens.map(tokenToField).filter((t) => t));\n return stringifyTokens(tokens, tokenToString(collapsed));\n }\n}\n","import {\n untruncateYear,\n signedOffset,\n parseInteger,\n parseMillis,\n isUndefined,\n parseFloating,\n} from \"./util.js\";\nimport * as English from \"./english.js\";\nimport FixedOffsetZone from \"../zones/fixedOffsetZone.js\";\nimport IANAZone from \"../zones/IANAZone.js\";\n\n/*\n * This file handles parsing for well-specified formats. Here's how it works:\n * Two things go into parsing: a regex to match with and an extractor to take apart the groups in the match.\n * An extractor is just a function that takes a regex match array and returns a { year: ..., month: ... } object\n * parse() does the work of executing the regex and applying the extractor. It takes multiple regex/extractor pairs to try in sequence.\n * Extractors can take a \"cursor\" representing the offset in the match to look at. This makes it easy to combine extractors.\n * combineExtractors() does the work of combining them, keeping track of the cursor through multiple extractions.\n * Some extractions are super dumb and simpleParse and fromStrings help DRY them.\n */\n\nconst ianaRegex = /[A-Za-z_+-]{1,256}(?::?\\/[A-Za-z0-9_+-]{1,256}(?:\\/[A-Za-z0-9_+-]{1,256})?)?/;\n\nfunction combineRegexes(...regexes) {\n const full = regexes.reduce((f, r) => f + r.source, \"\");\n return RegExp(`^${full}$`);\n}\n\nfunction combineExtractors(...extractors) {\n return (m) =>\n extractors\n .reduce(\n ([mergedVals, mergedZone, cursor], ex) => {\n const [val, zone, next] = ex(m, cursor);\n return [{ ...mergedVals, ...val }, zone || mergedZone, next];\n },\n [{}, null, 1]\n )\n .slice(0, 2);\n}\n\nfunction parse(s, ...patterns) {\n if (s == null) {\n return [null, null];\n }\n\n for (const [regex, extractor] of patterns) {\n const m = regex.exec(s);\n if (m) {\n return extractor(m);\n }\n }\n return [null, null];\n}\n\nfunction simpleParse(...keys) {\n return (match, cursor) => {\n const ret = {};\n let i;\n\n for (i = 0; i < keys.length; i++) {\n ret[keys[i]] = parseInteger(match[cursor + i]);\n }\n return [ret, null, cursor + i];\n };\n}\n\n// ISO and SQL parsing\nconst offsetRegex = /(?:(Z)|([+-]\\d\\d)(?::?(\\d\\d))?)/;\nconst isoExtendedZone = `(?:${offsetRegex.source}?(?:\\\\[(${ianaRegex.source})\\\\])?)?`;\nconst isoTimeBaseRegex = /(\\d\\d)(?::?(\\d\\d)(?::?(\\d\\d)(?:[.,](\\d{1,30}))?)?)?/;\nconst isoTimeRegex = RegExp(`${isoTimeBaseRegex.source}${isoExtendedZone}`);\nconst isoTimeExtensionRegex = RegExp(`(?:T${isoTimeRegex.source})?`);\nconst isoYmdRegex = /([+-]\\d{6}|\\d{4})(?:-?(\\d\\d)(?:-?(\\d\\d))?)?/;\nconst isoWeekRegex = /(\\d{4})-?W(\\d\\d)(?:-?(\\d))?/;\nconst isoOrdinalRegex = /(\\d{4})-?(\\d{3})/;\nconst extractISOWeekData = simpleParse(\"weekYear\", \"weekNumber\", \"weekDay\");\nconst extractISOOrdinalData = simpleParse(\"year\", \"ordinal\");\nconst sqlYmdRegex = /(\\d{4})-(\\d\\d)-(\\d\\d)/; // dumbed-down version of the ISO one\nconst sqlTimeRegex = RegExp(\n `${isoTimeBaseRegex.source} ?(?:${offsetRegex.source}|(${ianaRegex.source}))?`\n);\nconst sqlTimeExtensionRegex = RegExp(`(?: ${sqlTimeRegex.source})?`);\n\nfunction int(match, pos, fallback) {\n const m = match[pos];\n return isUndefined(m) ? fallback : parseInteger(m);\n}\n\nfunction extractISOYmd(match, cursor) {\n const item = {\n year: int(match, cursor),\n month: int(match, cursor + 1, 1),\n day: int(match, cursor + 2, 1),\n };\n\n return [item, null, cursor + 3];\n}\n\nfunction extractISOTime(match, cursor) {\n const item = {\n hours: int(match, cursor, 0),\n minutes: int(match, cursor + 1, 0),\n seconds: int(match, cursor + 2, 0),\n milliseconds: parseMillis(match[cursor + 3]),\n };\n\n return [item, null, cursor + 4];\n}\n\nfunction extractISOOffset(match, cursor) {\n const local = !match[cursor] && !match[cursor + 1],\n fullOffset = signedOffset(match[cursor + 1], match[cursor + 2]),\n zone = local ? null : FixedOffsetZone.instance(fullOffset);\n return [{}, zone, cursor + 3];\n}\n\nfunction extractIANAZone(match, cursor) {\n const zone = match[cursor] ? IANAZone.create(match[cursor]) : null;\n return [{}, zone, cursor + 1];\n}\n\n// ISO time parsing\n\nconst isoTimeOnly = RegExp(`^T?${isoTimeBaseRegex.source}$`);\n\n// ISO duration parsing\n\nconst isoDuration =\n /^-?P(?:(?:(-?\\d{1,20}(?:\\.\\d{1,20})?)Y)?(?:(-?\\d{1,20}(?:\\.\\d{1,20})?)M)?(?:(-?\\d{1,20}(?:\\.\\d{1,20})?)W)?(?:(-?\\d{1,20}(?:\\.\\d{1,20})?)D)?(?:T(?:(-?\\d{1,20}(?:\\.\\d{1,20})?)H)?(?:(-?\\d{1,20}(?:\\.\\d{1,20})?)M)?(?:(-?\\d{1,20})(?:[.,](-?\\d{1,20}))?S)?)?)$/;\n\nfunction extractISODuration(match) {\n const [s, yearStr, monthStr, weekStr, dayStr, hourStr, minuteStr, secondStr, millisecondsStr] =\n match;\n\n const hasNegativePrefix = s[0] === \"-\";\n const negativeSeconds = secondStr && secondStr[0] === \"-\";\n\n const maybeNegate = (num, force = false) =>\n num !== undefined && (force || (num && hasNegativePrefix)) ? -num : num;\n\n return [\n {\n years: maybeNegate(parseFloating(yearStr)),\n months: maybeNegate(parseFloating(monthStr)),\n weeks: maybeNegate(parseFloating(weekStr)),\n days: maybeNegate(parseFloating(dayStr)),\n hours: maybeNegate(parseFloating(hourStr)),\n minutes: maybeNegate(parseFloating(minuteStr)),\n seconds: maybeNegate(parseFloating(secondStr), secondStr === \"-0\"),\n milliseconds: maybeNegate(parseMillis(millisecondsStr), negativeSeconds),\n },\n ];\n}\n\n// These are a little braindead. EDT *should* tell us that we're in, say, America/New_York\n// and not just that we're in -240 *right now*. But since I don't think these are used that often\n// I'm just going to ignore that\nconst obsOffsets = {\n GMT: 0,\n EDT: -4 * 60,\n EST: -5 * 60,\n CDT: -5 * 60,\n CST: -6 * 60,\n MDT: -6 * 60,\n MST: -7 * 60,\n PDT: -7 * 60,\n PST: -8 * 60,\n};\n\nfunction fromStrings(weekdayStr, yearStr, monthStr, dayStr, hourStr, minuteStr, secondStr) {\n const result = {\n year: yearStr.length === 2 ? untruncateYear(parseInteger(yearStr)) : parseInteger(yearStr),\n month: English.monthsShort.indexOf(monthStr) + 1,\n day: parseInteger(dayStr),\n hour: parseInteger(hourStr),\n minute: parseInteger(minuteStr),\n };\n\n if (secondStr) result.second = parseInteger(secondStr);\n if (weekdayStr) {\n result.weekday =\n weekdayStr.length > 3\n ? English.weekdaysLong.indexOf(weekdayStr) + 1\n : English.weekdaysShort.indexOf(weekdayStr) + 1;\n }\n\n return result;\n}\n\n// RFC 2822/5322\nconst rfc2822 =\n /^(?:(Mon|Tue|Wed|Thu|Fri|Sat|Sun),\\s)?(\\d{1,2})\\s(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)\\s(\\d{2,4})\\s(\\d\\d):(\\d\\d)(?::(\\d\\d))?\\s(?:(UT|GMT|[ECMP][SD]T)|([Zz])|(?:([+-]\\d\\d)(\\d\\d)))$/;\n\nfunction extractRFC2822(match) {\n const [\n ,\n weekdayStr,\n dayStr,\n monthStr,\n yearStr,\n hourStr,\n minuteStr,\n secondStr,\n obsOffset,\n milOffset,\n offHourStr,\n offMinuteStr,\n ] = match,\n result = fromStrings(weekdayStr, yearStr, monthStr, dayStr, hourStr, minuteStr, secondStr);\n\n let offset;\n if (obsOffset) {\n offset = obsOffsets[obsOffset];\n } else if (milOffset) {\n offset = 0;\n } else {\n offset = signedOffset(offHourStr, offMinuteStr);\n }\n\n return [result, new FixedOffsetZone(offset)];\n}\n\nfunction preprocessRFC2822(s) {\n // Remove comments and folding whitespace and replace multiple-spaces with a single space\n return s\n .replace(/\\([^()]*\\)|[\\n\\t]/g, \" \")\n .replace(/(\\s\\s+)/g, \" \")\n .trim();\n}\n\n// http date\n\nconst rfc1123 =\n /^(Mon|Tue|Wed|Thu|Fri|Sat|Sun), (\\d\\d) (Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec) (\\d{4}) (\\d\\d):(\\d\\d):(\\d\\d) GMT$/,\n rfc850 =\n /^(Monday|Tuesday|Wednesday|Thursday|Friday|Saturday|Sunday), (\\d\\d)-(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)-(\\d\\d) (\\d\\d):(\\d\\d):(\\d\\d) GMT$/,\n ascii =\n /^(Mon|Tue|Wed|Thu|Fri|Sat|Sun) (Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec) ( \\d|\\d\\d) (\\d\\d):(\\d\\d):(\\d\\d) (\\d{4})$/;\n\nfunction extractRFC1123Or850(match) {\n const [, weekdayStr, dayStr, monthStr, yearStr, hourStr, minuteStr, secondStr] = match,\n result = fromStrings(weekdayStr, yearStr, monthStr, dayStr, hourStr, minuteStr, secondStr);\n return [result, FixedOffsetZone.utcInstance];\n}\n\nfunction extractASCII(match) {\n const [, weekdayStr, monthStr, dayStr, hourStr, minuteStr, secondStr, yearStr] = match,\n result = fromStrings(weekdayStr, yearStr, monthStr, dayStr, hourStr, minuteStr, secondStr);\n return [result, FixedOffsetZone.utcInstance];\n}\n\nconst isoYmdWithTimeExtensionRegex = combineRegexes(isoYmdRegex, isoTimeExtensionRegex);\nconst isoWeekWithTimeExtensionRegex = combineRegexes(isoWeekRegex, isoTimeExtensionRegex);\nconst isoOrdinalWithTimeExtensionRegex = combineRegexes(isoOrdinalRegex, isoTimeExtensionRegex);\nconst isoTimeCombinedRegex = combineRegexes(isoTimeRegex);\n\nconst extractISOYmdTimeAndOffset = combineExtractors(\n extractISOYmd,\n extractISOTime,\n extractISOOffset,\n extractIANAZone\n);\nconst extractISOWeekTimeAndOffset = combineExtractors(\n extractISOWeekData,\n extractISOTime,\n extractISOOffset,\n extractIANAZone\n);\nconst extractISOOrdinalDateAndTime = combineExtractors(\n extractISOOrdinalData,\n extractISOTime,\n extractISOOffset,\n extractIANAZone\n);\nconst extractISOTimeAndOffset = combineExtractors(\n extractISOTime,\n extractISOOffset,\n extractIANAZone\n);\n\n/*\n * @private\n */\n\nexport function parseISODate(s) {\n return parse(\n s,\n [isoYmdWithTimeExtensionRegex, extractISOYmdTimeAndOffset],\n [isoWeekWithTimeExtensionRegex, extractISOWeekTimeAndOffset],\n [isoOrdinalWithTimeExtensionRegex, extractISOOrdinalDateAndTime],\n [isoTimeCombinedRegex, extractISOTimeAndOffset]\n );\n}\n\nexport function parseRFC2822Date(s) {\n return parse(preprocessRFC2822(s), [rfc2822, extractRFC2822]);\n}\n\nexport function parseHTTPDate(s) {\n return parse(\n s,\n [rfc1123, extractRFC1123Or850],\n [rfc850, extractRFC1123Or850],\n [ascii, extractASCII]\n );\n}\n\nexport function parseISODuration(s) {\n return parse(s, [isoDuration, extractISODuration]);\n}\n\nconst extractISOTimeOnly = combineExtractors(extractISOTime);\n\nexport function parseISOTimeOnly(s) {\n return parse(s, [isoTimeOnly, extractISOTimeOnly]);\n}\n\nconst sqlYmdWithTimeExtensionRegex = combineRegexes(sqlYmdRegex, sqlTimeExtensionRegex);\nconst sqlTimeCombinedRegex = combineRegexes(sqlTimeRegex);\n\nconst extractISOTimeOffsetAndIANAZone = combineExtractors(\n extractISOTime,\n extractISOOffset,\n extractIANAZone\n);\n\nexport function parseSQL(s) {\n return parse(\n s,\n [sqlYmdWithTimeExtensionRegex, extractISOYmdTimeAndOffset],\n [sqlTimeCombinedRegex, extractISOTimeOffsetAndIANAZone]\n );\n}\n","import { InvalidArgumentError, InvalidDurationError, InvalidUnitError } from \"./errors.js\";\nimport Formatter from \"./impl/formatter.js\";\nimport Invalid from \"./impl/invalid.js\";\nimport Locale from \"./impl/locale.js\";\nimport { parseISODuration, parseISOTimeOnly } from \"./impl/regexParser.js\";\nimport {\n asNumber,\n hasOwnProperty,\n isNumber,\n isUndefined,\n normalizeObject,\n roundTo,\n} from \"./impl/util.js\";\nimport Settings from \"./settings.js\";\nimport DateTime from \"./datetime.js\";\n\nconst INVALID = \"Invalid Duration\";\n\n// unit conversion constants\nexport const lowOrderMatrix = {\n weeks: {\n days: 7,\n hours: 7 * 24,\n minutes: 7 * 24 * 60,\n seconds: 7 * 24 * 60 * 60,\n milliseconds: 7 * 24 * 60 * 60 * 1000,\n },\n days: {\n hours: 24,\n minutes: 24 * 60,\n seconds: 24 * 60 * 60,\n milliseconds: 24 * 60 * 60 * 1000,\n },\n hours: { minutes: 60, seconds: 60 * 60, milliseconds: 60 * 60 * 1000 },\n minutes: { seconds: 60, milliseconds: 60 * 1000 },\n seconds: { milliseconds: 1000 },\n },\n casualMatrix = {\n years: {\n quarters: 4,\n months: 12,\n weeks: 52,\n days: 365,\n hours: 365 * 24,\n minutes: 365 * 24 * 60,\n seconds: 365 * 24 * 60 * 60,\n milliseconds: 365 * 24 * 60 * 60 * 1000,\n },\n quarters: {\n months: 3,\n weeks: 13,\n days: 91,\n hours: 91 * 24,\n minutes: 91 * 24 * 60,\n seconds: 91 * 24 * 60 * 60,\n milliseconds: 91 * 24 * 60 * 60 * 1000,\n },\n months: {\n weeks: 4,\n days: 30,\n hours: 30 * 24,\n minutes: 30 * 24 * 60,\n seconds: 30 * 24 * 60 * 60,\n milliseconds: 30 * 24 * 60 * 60 * 1000,\n },\n\n ...lowOrderMatrix,\n },\n daysInYearAccurate = 146097.0 / 400,\n daysInMonthAccurate = 146097.0 / 4800,\n accurateMatrix = {\n years: {\n quarters: 4,\n months: 12,\n weeks: daysInYearAccurate / 7,\n days: daysInYearAccurate,\n hours: daysInYearAccurate * 24,\n minutes: daysInYearAccurate * 24 * 60,\n seconds: daysInYearAccurate * 24 * 60 * 60,\n milliseconds: daysInYearAccurate * 24 * 60 * 60 * 1000,\n },\n quarters: {\n months: 3,\n weeks: daysInYearAccurate / 28,\n days: daysInYearAccurate / 4,\n hours: (daysInYearAccurate * 24) / 4,\n minutes: (daysInYearAccurate * 24 * 60) / 4,\n seconds: (daysInYearAccurate * 24 * 60 * 60) / 4,\n milliseconds: (daysInYearAccurate * 24 * 60 * 60 * 1000) / 4,\n },\n months: {\n weeks: daysInMonthAccurate / 7,\n days: daysInMonthAccurate,\n hours: daysInMonthAccurate * 24,\n minutes: daysInMonthAccurate * 24 * 60,\n seconds: daysInMonthAccurate * 24 * 60 * 60,\n milliseconds: daysInMonthAccurate * 24 * 60 * 60 * 1000,\n },\n ...lowOrderMatrix,\n };\n\n// units ordered by size\nconst orderedUnits = [\n \"years\",\n \"quarters\",\n \"months\",\n \"weeks\",\n \"days\",\n \"hours\",\n \"minutes\",\n \"seconds\",\n \"milliseconds\",\n];\n\nconst reverseUnits = orderedUnits.slice(0).reverse();\n\n// clone really means \"create another instance just like this one, but with these changes\"\nfunction clone(dur, alts, clear = false) {\n // deep merge for vals\n const conf = {\n values: clear ? alts.values : { ...dur.values, ...(alts.values || {}) },\n loc: dur.loc.clone(alts.loc),\n conversionAccuracy: alts.conversionAccuracy || dur.conversionAccuracy,\n matrix: alts.matrix || dur.matrix,\n };\n return new Duration(conf);\n}\n\nfunction durationToMillis(matrix, vals) {\n let sum = vals.milliseconds ?? 0;\n for (const unit of reverseUnits.slice(1)) {\n if (vals[unit]) {\n sum += vals[unit] * matrix[unit][\"milliseconds\"];\n }\n }\n return sum;\n}\n\n// NB: mutates parameters\nfunction normalizeValues(matrix, vals) {\n // the logic below assumes the overall value of the duration is positive\n // if this is not the case, factor is used to make it so\n const factor = durationToMillis(matrix, vals) < 0 ? -1 : 1;\n\n orderedUnits.reduceRight((previous, current) => {\n if (!isUndefined(vals[current])) {\n if (previous) {\n const previousVal = vals[previous] * factor;\n const conv = matrix[current][previous];\n\n // if (previousVal < 0):\n // lower order unit is negative (e.g. { years: 2, days: -2 })\n // normalize this by reducing the higher order unit by the appropriate amount\n // and increasing the lower order unit\n // this can never make the higher order unit negative, because this function only operates\n // on positive durations, so the amount of time represented by the lower order unit cannot\n // be larger than the higher order unit\n // else:\n // lower order unit is positive (e.g. { years: 2, days: 450 } or { years: -2, days: 450 })\n // in this case we attempt to convert as much as possible from the lower order unit into\n // the higher order one\n //\n // Math.floor takes care of both of these cases, rounding away from 0\n // if previousVal < 0 it makes the absolute value larger\n // if previousVal >= it makes the absolute value smaller\n const rollUp = Math.floor(previousVal / conv);\n vals[current] += rollUp * factor;\n vals[previous] -= rollUp * conv * factor;\n }\n return current;\n } else {\n return previous;\n }\n }, null);\n\n // try to convert any decimals into smaller units if possible\n // for example for { years: 2.5, days: 0, seconds: 0 } we want to get { years: 2, days: 182, hours: 12 }\n orderedUnits.reduce((previous, current) => {\n if (!isUndefined(vals[current])) {\n if (previous) {\n const fraction = vals[previous] % 1;\n vals[previous] -= fraction;\n vals[current] += fraction * matrix[previous][current];\n }\n return current;\n } else {\n return previous;\n }\n }, null);\n}\n\n// Remove all properties with a value of 0 from an object\nfunction removeZeroes(vals) {\n const newVals = {};\n for (const [key, value] of Object.entries(vals)) {\n if (value !== 0) {\n newVals[key] = value;\n }\n }\n return newVals;\n}\n\n/**\n * A Duration object represents a period of time, like \"2 months\" or \"1 day, 1 hour\". Conceptually, it's just a map of units to their quantities, accompanied by some additional configuration and methods for creating, parsing, interrogating, transforming, and formatting them. They can be used on their own or in conjunction with other Luxon types; for example, you can use {@link DateTime#plus} to add a Duration object to a DateTime, producing another DateTime.\n *\n * Here is a brief overview of commonly used methods and getters in Duration:\n *\n * * **Creation** To create a Duration, use {@link Duration.fromMillis}, {@link Duration.fromObject}, or {@link Duration.fromISO}.\n * * **Unit values** See the {@link Duration#years}, {@link Duration#months}, {@link Duration#weeks}, {@link Duration#days}, {@link Duration#hours}, {@link Duration#minutes}, {@link Duration#seconds}, {@link Duration#milliseconds} accessors.\n * * **Configuration** See {@link Duration#locale} and {@link Duration#numberingSystem} accessors.\n * * **Transformation** To create new Durations out of old ones use {@link Duration#plus}, {@link Duration#minus}, {@link Duration#normalize}, {@link Duration#set}, {@link Duration#reconfigure}, {@link Duration#shiftTo}, and {@link Duration#negate}.\n * * **Output** To convert the Duration into other representations, see {@link Duration#as}, {@link Duration#toISO}, {@link Duration#toFormat}, and {@link Duration#toJSON}\n *\n * There's are more methods documented below. In addition, for more information on subtler topics like internationalization and validity, see the external documentation.\n */\nexport default class Duration {\n /**\n * @private\n */\n constructor(config) {\n const accurate = config.conversionAccuracy === \"longterm\" || false;\n let matrix = accurate ? accurateMatrix : casualMatrix;\n\n if (config.matrix) {\n matrix = config.matrix;\n }\n\n /**\n * @access private\n */\n this.values = config.values;\n /**\n * @access private\n */\n this.loc = config.loc || Locale.create();\n /**\n * @access private\n */\n this.conversionAccuracy = accurate ? \"longterm\" : \"casual\";\n /**\n * @access private\n */\n this.invalid = config.invalid || null;\n /**\n * @access private\n */\n this.matrix = matrix;\n /**\n * @access private\n */\n this.isLuxonDuration = true;\n }\n\n /**\n * Create Duration from a number of milliseconds.\n * @param {number} count of milliseconds\n * @param {Object} opts - options for parsing\n * @param {string} [opts.locale='en-US'] - the locale to use\n * @param {string} opts.numberingSystem - the numbering system to use\n * @param {string} [opts.conversionAccuracy='casual'] - the conversion system to use\n * @return {Duration}\n */\n static fromMillis(count, opts) {\n return Duration.fromObject({ milliseconds: count }, opts);\n }\n\n /**\n * Create a Duration from a JavaScript object with keys like 'years' and 'hours'.\n * If this object is empty then a zero milliseconds duration is returned.\n * @param {Object} obj - the object to create the DateTime from\n * @param {number} obj.years\n * @param {number} obj.quarters\n * @param {number} obj.months\n * @param {number} obj.weeks\n * @param {number} obj.days\n * @param {number} obj.hours\n * @param {number} obj.minutes\n * @param {number} obj.seconds\n * @param {number} obj.milliseconds\n * @param {Object} [opts=[]] - options for creating this Duration\n * @param {string} [opts.locale='en-US'] - the locale to use\n * @param {string} opts.numberingSystem - the numbering system to use\n * @param {string} [opts.conversionAccuracy='casual'] - the preset conversion system to use\n * @param {string} [opts.matrix=Object] - the custom conversion system to use\n * @return {Duration}\n */\n static fromObject(obj, opts = {}) {\n if (obj == null || typeof obj !== \"object\") {\n throw new InvalidArgumentError(\n `Duration.fromObject: argument expected to be an object, got ${\n obj === null ? \"null\" : typeof obj\n }`\n );\n }\n\n return new Duration({\n values: normalizeObject(obj, Duration.normalizeUnit),\n loc: Locale.fromObject(opts),\n conversionAccuracy: opts.conversionAccuracy,\n matrix: opts.matrix,\n });\n }\n\n /**\n * Create a Duration from DurationLike.\n *\n * @param {Object | number | Duration} durationLike\n * One of:\n * - object with keys like 'years' and 'hours'.\n * - number representing milliseconds\n * - Duration instance\n * @return {Duration}\n */\n static fromDurationLike(durationLike) {\n if (isNumber(durationLike)) {\n return Duration.fromMillis(durationLike);\n } else if (Duration.isDuration(durationLike)) {\n return durationLike;\n } else if (typeof durationLike === \"object\") {\n return Duration.fromObject(durationLike);\n } else {\n throw new InvalidArgumentError(\n `Unknown duration argument ${durationLike} of type ${typeof durationLike}`\n );\n }\n }\n\n /**\n * Create a Duration from an ISO 8601 duration string.\n * @param {string} text - text to parse\n * @param {Object} opts - options for parsing\n * @param {string} [opts.locale='en-US'] - the locale to use\n * @param {string} opts.numberingSystem - the numbering system to use\n * @param {string} [opts.conversionAccuracy='casual'] - the preset conversion system to use\n * @param {string} [opts.matrix=Object] - the preset conversion system to use\n * @see https://en.wikipedia.org/wiki/ISO_8601#Durations\n * @example Duration.fromISO('P3Y6M1W4DT12H30M5S').toObject() //=> { years: 3, months: 6, weeks: 1, days: 4, hours: 12, minutes: 30, seconds: 5 }\n * @example Duration.fromISO('PT23H').toObject() //=> { hours: 23 }\n * @example Duration.fromISO('P5Y3M').toObject() //=> { years: 5, months: 3 }\n * @return {Duration}\n */\n static fromISO(text, opts) {\n const [parsed] = parseISODuration(text);\n if (parsed) {\n return Duration.fromObject(parsed, opts);\n } else {\n return Duration.invalid(\"unparsable\", `the input \"${text}\" can't be parsed as ISO 8601`);\n }\n }\n\n /**\n * Create a Duration from an ISO 8601 time string.\n * @param {string} text - text to parse\n * @param {Object} opts - options for parsing\n * @param {string} [opts.locale='en-US'] - the locale to use\n * @param {string} opts.numberingSystem - the numbering system to use\n * @param {string} [opts.conversionAccuracy='casual'] - the preset conversion system to use\n * @param {string} [opts.matrix=Object] - the conversion system to use\n * @see https://en.wikipedia.org/wiki/ISO_8601#Times\n * @example Duration.fromISOTime('11:22:33.444').toObject() //=> { hours: 11, minutes: 22, seconds: 33, milliseconds: 444 }\n * @example Duration.fromISOTime('11:00').toObject() //=> { hours: 11, minutes: 0, seconds: 0 }\n * @example Duration.fromISOTime('T11:00').toObject() //=> { hours: 11, minutes: 0, seconds: 0 }\n * @example Duration.fromISOTime('1100').toObject() //=> { hours: 11, minutes: 0, seconds: 0 }\n * @example Duration.fromISOTime('T1100').toObject() //=> { hours: 11, minutes: 0, seconds: 0 }\n * @return {Duration}\n */\n static fromISOTime(text, opts) {\n const [parsed] = parseISOTimeOnly(text);\n if (parsed) {\n return Duration.fromObject(parsed, opts);\n } else {\n return Duration.invalid(\"unparsable\", `the input \"${text}\" can't be parsed as ISO 8601`);\n }\n }\n\n /**\n * Create an invalid Duration.\n * @param {string} reason - simple string of why this datetime is invalid. Should not contain parameters or anything else data-dependent\n * @param {string} [explanation=null] - longer explanation, may include parameters and other useful debugging information\n * @return {Duration}\n */\n static invalid(reason, explanation = null) {\n if (!reason) {\n throw new InvalidArgumentError(\"need to specify a reason the Duration is invalid\");\n }\n\n const invalid = reason instanceof Invalid ? reason : new Invalid(reason, explanation);\n\n if (Settings.throwOnInvalid) {\n throw new InvalidDurationError(invalid);\n } else {\n return new Duration({ invalid });\n }\n }\n\n /**\n * @private\n */\n static normalizeUnit(unit) {\n const normalized = {\n year: \"years\",\n years: \"years\",\n quarter: \"quarters\",\n quarters: \"quarters\",\n month: \"months\",\n months: \"months\",\n week: \"weeks\",\n weeks: \"weeks\",\n day: \"days\",\n days: \"days\",\n hour: \"hours\",\n hours: \"hours\",\n minute: \"minutes\",\n minutes: \"minutes\",\n second: \"seconds\",\n seconds: \"seconds\",\n millisecond: \"milliseconds\",\n milliseconds: \"milliseconds\",\n }[unit ? unit.toLowerCase() : unit];\n\n if (!normalized) throw new InvalidUnitError(unit);\n\n return normalized;\n }\n\n /**\n * Check if an object is a Duration. Works across context boundaries\n * @param {object} o\n * @return {boolean}\n */\n static isDuration(o) {\n return (o && o.isLuxonDuration) || false;\n }\n\n /**\n * Get the locale of a Duration, such 'en-GB'\n * @type {string}\n */\n get locale() {\n return this.isValid ? this.loc.locale : null;\n }\n\n /**\n * Get the numbering system of a Duration, such 'beng'. The numbering system is used when formatting the Duration\n *\n * @type {string}\n */\n get numberingSystem() {\n return this.isValid ? this.loc.numberingSystem : null;\n }\n\n /**\n * Returns a string representation of this Duration formatted according to the specified format string. You may use these tokens:\n * * `S` for milliseconds\n * * `s` for seconds\n * * `m` for minutes\n * * `h` for hours\n * * `d` for days\n * * `w` for weeks\n * * `M` for months\n * * `y` for years\n * Notes:\n * * Add padding by repeating the token, e.g. \"yy\" pads the years to two digits, \"hhhh\" pads the hours out to four digits\n * * Tokens can be escaped by wrapping with single quotes.\n * * The duration will be converted to the set of units in the format string using {@link Duration#shiftTo} and the Durations's conversion accuracy setting.\n * @param {string} fmt - the format string\n * @param {Object} opts - options\n * @param {boolean} [opts.floor=true] - floor numerical values\n * @example Duration.fromObject({ years: 1, days: 6, seconds: 2 }).toFormat(\"y d s\") //=> \"1 6 2\"\n * @example Duration.fromObject({ years: 1, days: 6, seconds: 2 }).toFormat(\"yy dd sss\") //=> \"01 06 002\"\n * @example Duration.fromObject({ years: 1, days: 6, seconds: 2 }).toFormat(\"M S\") //=> \"12 518402000\"\n * @return {string}\n */\n toFormat(fmt, opts = {}) {\n // reverse-compat since 1.2; we always round down now, never up, and we do it by default\n const fmtOpts = {\n ...opts,\n floor: opts.round !== false && opts.floor !== false,\n };\n return this.isValid\n ? Formatter.create(this.loc, fmtOpts).formatDurationFromString(this, fmt)\n : INVALID;\n }\n\n /**\n * Returns a string representation of a Duration with all units included.\n * To modify its behavior, use `listStyle` and any Intl.NumberFormat option, though `unitDisplay` is especially relevant.\n * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/NumberFormat/NumberFormat#options\n * @param {Object} opts - Formatting options. Accepts the same keys as the options parameter of the native `Intl.NumberFormat` constructor, as well as `listStyle`.\n * @param {string} [opts.listStyle='narrow'] - How to format the merged list. Corresponds to the `style` property of the options parameter of the native `Intl.ListFormat` constructor.\n * @example\n * ```js\n * var dur = Duration.fromObject({ days: 1, hours: 5, minutes: 6 })\n * dur.toHuman() //=> '1 day, 5 hours, 6 minutes'\n * dur.toHuman({ listStyle: \"long\" }) //=> '1 day, 5 hours, and 6 minutes'\n * dur.toHuman({ unitDisplay: \"short\" }) //=> '1 day, 5 hr, 6 min'\n * ```\n */\n toHuman(opts = {}) {\n if (!this.isValid) return INVALID;\n\n const l = orderedUnits\n .map((unit) => {\n const val = this.values[unit];\n if (isUndefined(val)) {\n return null;\n }\n return this.loc\n .numberFormatter({ style: \"unit\", unitDisplay: \"long\", ...opts, unit: unit.slice(0, -1) })\n .format(val);\n })\n .filter((n) => n);\n\n return this.loc\n .listFormatter({ type: \"conjunction\", style: opts.listStyle || \"narrow\", ...opts })\n .format(l);\n }\n\n /**\n * Returns a JavaScript object with this Duration's values.\n * @example Duration.fromObject({ years: 1, days: 6, seconds: 2 }).toObject() //=> { years: 1, days: 6, seconds: 2 }\n * @return {Object}\n */\n toObject() {\n if (!this.isValid) return {};\n return { ...this.values };\n }\n\n /**\n * Returns an ISO 8601-compliant string representation of this Duration.\n * @see https://en.wikipedia.org/wiki/ISO_8601#Durations\n * @example Duration.fromObject({ years: 3, seconds: 45 }).toISO() //=> 'P3YT45S'\n * @example Duration.fromObject({ months: 4, seconds: 45 }).toISO() //=> 'P4MT45S'\n * @example Duration.fromObject({ months: 5 }).toISO() //=> 'P5M'\n * @example Duration.fromObject({ minutes: 5 }).toISO() //=> 'PT5M'\n * @example Duration.fromObject({ milliseconds: 6 }).toISO() //=> 'PT0.006S'\n * @return {string}\n */\n toISO() {\n // we could use the formatter, but this is an easier way to get the minimum string\n if (!this.isValid) return null;\n\n let s = \"P\";\n if (this.years !== 0) s += this.years + \"Y\";\n if (this.months !== 0 || this.quarters !== 0) s += this.months + this.quarters * 3 + \"M\";\n if (this.weeks !== 0) s += this.weeks + \"W\";\n if (this.days !== 0) s += this.days + \"D\";\n if (this.hours !== 0 || this.minutes !== 0 || this.seconds !== 0 || this.milliseconds !== 0)\n s += \"T\";\n if (this.hours !== 0) s += this.hours + \"H\";\n if (this.minutes !== 0) s += this.minutes + \"M\";\n if (this.seconds !== 0 || this.milliseconds !== 0)\n // this will handle \"floating point madness\" by removing extra decimal places\n // https://stackoverflow.com/questions/588004/is-floating-point-math-broken\n s += roundTo(this.seconds + this.milliseconds / 1000, 3) + \"S\";\n if (s === \"P\") s += \"T0S\";\n return s;\n }\n\n /**\n * Returns an ISO 8601-compliant string representation of this Duration, formatted as a time of day.\n * Note that this will return null if the duration is invalid, negative, or equal to or greater than 24 hours.\n * @see https://en.wikipedia.org/wiki/ISO_8601#Times\n * @param {Object} opts - options\n * @param {boolean} [opts.suppressMilliseconds=false] - exclude milliseconds from the format if they're 0\n * @param {boolean} [opts.suppressSeconds=false] - exclude seconds from the format if they're 0\n * @param {boolean} [opts.includePrefix=false] - include the `T` prefix\n * @param {string} [opts.format='extended'] - choose between the basic and extended format\n * @example Duration.fromObject({ hours: 11 }).toISOTime() //=> '11:00:00.000'\n * @example Duration.fromObject({ hours: 11 }).toISOTime({ suppressMilliseconds: true }) //=> '11:00:00'\n * @example Duration.fromObject({ hours: 11 }).toISOTime({ suppressSeconds: true }) //=> '11:00'\n * @example Duration.fromObject({ hours: 11 }).toISOTime({ includePrefix: true }) //=> 'T11:00:00.000'\n * @example Duration.fromObject({ hours: 11 }).toISOTime({ format: 'basic' }) //=> '110000.000'\n * @return {string}\n */\n toISOTime(opts = {}) {\n if (!this.isValid) return null;\n\n const millis = this.toMillis();\n if (millis < 0 || millis >= 86400000) return null;\n\n opts = {\n suppressMilliseconds: false,\n suppressSeconds: false,\n includePrefix: false,\n format: \"extended\",\n ...opts,\n includeOffset: false,\n };\n\n const dateTime = DateTime.fromMillis(millis, { zone: \"UTC\" });\n return dateTime.toISOTime(opts);\n }\n\n /**\n * Returns an ISO 8601 representation of this Duration appropriate for use in JSON.\n * @return {string}\n */\n toJSON() {\n return this.toISO();\n }\n\n /**\n * Returns an ISO 8601 representation of this Duration appropriate for use in debugging.\n * @return {string}\n */\n toString() {\n return this.toISO();\n }\n\n /**\n * Returns a string representation of this Duration appropriate for the REPL.\n * @return {string}\n */\n [Symbol.for(\"nodejs.util.inspect.custom\")]() {\n if (this.isValid) {\n return `Duration { values: ${JSON.stringify(this.values)} }`;\n } else {\n return `Duration { Invalid, reason: ${this.invalidReason} }`;\n }\n }\n\n /**\n * Returns an milliseconds value of this Duration.\n * @return {number}\n */\n toMillis() {\n if (!this.isValid) return NaN;\n\n return durationToMillis(this.matrix, this.values);\n }\n\n /**\n * Returns an milliseconds value of this Duration. Alias of {@link toMillis}\n * @return {number}\n */\n valueOf() {\n return this.toMillis();\n }\n\n /**\n * Make this Duration longer by the specified amount. Return a newly-constructed Duration.\n * @param {Duration|Object|number} duration - The amount to add. Either a Luxon Duration, a number of milliseconds, the object argument to Duration.fromObject()\n * @return {Duration}\n */\n plus(duration) {\n if (!this.isValid) return this;\n\n const dur = Duration.fromDurationLike(duration),\n result = {};\n\n for (const k of orderedUnits) {\n if (hasOwnProperty(dur.values, k) || hasOwnProperty(this.values, k)) {\n result[k] = dur.get(k) + this.get(k);\n }\n }\n\n return clone(this, { values: result }, true);\n }\n\n /**\n * Make this Duration shorter by the specified amount. Return a newly-constructed Duration.\n * @param {Duration|Object|number} duration - The amount to subtract. Either a Luxon Duration, a number of milliseconds, the object argument to Duration.fromObject()\n * @return {Duration}\n */\n minus(duration) {\n if (!this.isValid) return this;\n\n const dur = Duration.fromDurationLike(duration);\n return this.plus(dur.negate());\n }\n\n /**\n * Scale this Duration by the specified amount. Return a newly-constructed Duration.\n * @param {function} fn - The function to apply to each unit. Arity is 1 or 2: the value of the unit and, optionally, the unit name. Must return a number.\n * @example Duration.fromObject({ hours: 1, minutes: 30 }).mapUnits(x => x * 2) //=> { hours: 2, minutes: 60 }\n * @example Duration.fromObject({ hours: 1, minutes: 30 }).mapUnits((x, u) => u === \"hours\" ? x * 2 : x) //=> { hours: 2, minutes: 30 }\n * @return {Duration}\n */\n mapUnits(fn) {\n if (!this.isValid) return this;\n const result = {};\n for (const k of Object.keys(this.values)) {\n result[k] = asNumber(fn(this.values[k], k));\n }\n return clone(this, { values: result }, true);\n }\n\n /**\n * Get the value of unit.\n * @param {string} unit - a unit such as 'minute' or 'day'\n * @example Duration.fromObject({years: 2, days: 3}).get('years') //=> 2\n * @example Duration.fromObject({years: 2, days: 3}).get('months') //=> 0\n * @example Duration.fromObject({years: 2, days: 3}).get('days') //=> 3\n * @return {number}\n */\n get(unit) {\n return this[Duration.normalizeUnit(unit)];\n }\n\n /**\n * \"Set\" the values of specified units. Return a newly-constructed Duration.\n * @param {Object} values - a mapping of units to numbers\n * @example dur.set({ years: 2017 })\n * @example dur.set({ hours: 8, minutes: 30 })\n * @return {Duration}\n */\n set(values) {\n if (!this.isValid) return this;\n\n const mixed = { ...this.values, ...normalizeObject(values, Duration.normalizeUnit) };\n return clone(this, { values: mixed });\n }\n\n /**\n * \"Set\" the locale and/or numberingSystem. Returns a newly-constructed Duration.\n * @example dur.reconfigure({ locale: 'en-GB' })\n * @return {Duration}\n */\n reconfigure({ locale, numberingSystem, conversionAccuracy, matrix } = {}) {\n const loc = this.loc.clone({ locale, numberingSystem });\n const opts = { loc, matrix, conversionAccuracy };\n return clone(this, opts);\n }\n\n /**\n * Return the length of the duration in the specified unit.\n * @param {string} unit - a unit such as 'minutes' or 'days'\n * @example Duration.fromObject({years: 1}).as('days') //=> 365\n * @example Duration.fromObject({years: 1}).as('months') //=> 12\n * @example Duration.fromObject({hours: 60}).as('days') //=> 2.5\n * @return {number}\n */\n as(unit) {\n return this.isValid ? this.shiftTo(unit).get(unit) : NaN;\n }\n\n /**\n * Reduce this Duration to its canonical representation in its current units.\n * Assuming the overall value of the Duration is positive, this means:\n * - excessive values for lower-order units are converted to higher-order units (if possible, see first and second example)\n * - negative lower-order units are converted to higher order units (there must be such a higher order unit, otherwise\n * the overall value would be negative, see third example)\n * - fractional values for higher-order units are converted to lower-order units (if possible, see fourth example)\n *\n * If the overall value is negative, the result of this method is equivalent to `this.negate().normalize().negate()`.\n * @example Duration.fromObject({ years: 2, days: 5000 }).normalize().toObject() //=> { years: 15, days: 255 }\n * @example Duration.fromObject({ days: 5000 }).normalize().toObject() //=> { days: 5000 }\n * @example Duration.fromObject({ hours: 12, minutes: -45 }).normalize().toObject() //=> { hours: 11, minutes: 15 }\n * @example Duration.fromObject({ years: 2.5, days: 0, hours: 0 }).normalize().toObject() //=> { years: 2, days: 182, hours: 12 }\n * @return {Duration}\n */\n normalize() {\n if (!this.isValid) return this;\n const vals = this.toObject();\n normalizeValues(this.matrix, vals);\n return clone(this, { values: vals }, true);\n }\n\n /**\n * Rescale units to its largest representation\n * @example Duration.fromObject({ milliseconds: 90000 }).rescale().toObject() //=> { minutes: 1, seconds: 30 }\n * @return {Duration}\n */\n rescale() {\n if (!this.isValid) return this;\n const vals = removeZeroes(this.normalize().shiftToAll().toObject());\n return clone(this, { values: vals }, true);\n }\n\n /**\n * Convert this Duration into its representation in a different set of units.\n * @example Duration.fromObject({ hours: 1, seconds: 30 }).shiftTo('minutes', 'milliseconds').toObject() //=> { minutes: 60, milliseconds: 30000 }\n * @return {Duration}\n */\n shiftTo(...units) {\n if (!this.isValid) return this;\n\n if (units.length === 0) {\n return this;\n }\n\n units = units.map((u) => Duration.normalizeUnit(u));\n\n const built = {},\n accumulated = {},\n vals = this.toObject();\n let lastUnit;\n\n for (const k of orderedUnits) {\n if (units.indexOf(k) >= 0) {\n lastUnit = k;\n\n let own = 0;\n\n // anything we haven't boiled down yet should get boiled to this unit\n for (const ak in accumulated) {\n own += this.matrix[ak][k] * accumulated[ak];\n accumulated[ak] = 0;\n }\n\n // plus anything that's already in this unit\n if (isNumber(vals[k])) {\n own += vals[k];\n }\n\n // only keep the integer part for now in the hopes of putting any decimal part\n // into a smaller unit later\n const i = Math.trunc(own);\n built[k] = i;\n accumulated[k] = (own * 1000 - i * 1000) / 1000;\n\n // otherwise, keep it in the wings to boil it later\n } else if (isNumber(vals[k])) {\n accumulated[k] = vals[k];\n }\n }\n\n // anything leftover becomes the decimal for the last unit\n // lastUnit must be defined since units is not empty\n for (const key in accumulated) {\n if (accumulated[key] !== 0) {\n built[lastUnit] +=\n key === lastUnit ? accumulated[key] : accumulated[key] / this.matrix[lastUnit][key];\n }\n }\n\n normalizeValues(this.matrix, built);\n return clone(this, { values: built }, true);\n }\n\n /**\n * Shift this Duration to all available units.\n * Same as shiftTo(\"years\", \"months\", \"weeks\", \"days\", \"hours\", \"minutes\", \"seconds\", \"milliseconds\")\n * @return {Duration}\n */\n shiftToAll() {\n if (!this.isValid) return this;\n return this.shiftTo(\n \"years\",\n \"months\",\n \"weeks\",\n \"days\",\n \"hours\",\n \"minutes\",\n \"seconds\",\n \"milliseconds\"\n );\n }\n\n /**\n * Return the negative of this Duration.\n * @example Duration.fromObject({ hours: 1, seconds: 30 }).negate().toObject() //=> { hours: -1, seconds: -30 }\n * @return {Duration}\n */\n negate() {\n if (!this.isValid) return this;\n const negated = {};\n for (const k of Object.keys(this.values)) {\n negated[k] = this.values[k] === 0 ? 0 : -this.values[k];\n }\n return clone(this, { values: negated }, true);\n }\n\n /**\n * Get the years.\n * @type {number}\n */\n get years() {\n return this.isValid ? this.values.years || 0 : NaN;\n }\n\n /**\n * Get the quarters.\n * @type {number}\n */\n get quarters() {\n return this.isValid ? this.values.quarters || 0 : NaN;\n }\n\n /**\n * Get the months.\n * @type {number}\n */\n get months() {\n return this.isValid ? this.values.months || 0 : NaN;\n }\n\n /**\n * Get the weeks\n * @type {number}\n */\n get weeks() {\n return this.isValid ? this.values.weeks || 0 : NaN;\n }\n\n /**\n * Get the days.\n * @type {number}\n */\n get days() {\n return this.isValid ? this.values.days || 0 : NaN;\n }\n\n /**\n * Get the hours.\n * @type {number}\n */\n get hours() {\n return this.isValid ? this.values.hours || 0 : NaN;\n }\n\n /**\n * Get the minutes.\n * @type {number}\n */\n get minutes() {\n return this.isValid ? this.values.minutes || 0 : NaN;\n }\n\n /**\n * Get the seconds.\n * @return {number}\n */\n get seconds() {\n return this.isValid ? this.values.seconds || 0 : NaN;\n }\n\n /**\n * Get the milliseconds.\n * @return {number}\n */\n get milliseconds() {\n return this.isValid ? this.values.milliseconds || 0 : NaN;\n }\n\n /**\n * Returns whether the Duration is invalid. Invalid durations are returned by diff operations\n * on invalid DateTimes or Intervals.\n * @return {boolean}\n */\n get isValid() {\n return this.invalid === null;\n }\n\n /**\n * Returns an error code if this Duration became invalid, or null if the Duration is valid\n * @return {string}\n */\n get invalidReason() {\n return this.invalid ? this.invalid.reason : null;\n }\n\n /**\n * Returns an explanation of why this Duration became invalid, or null if the Duration is valid\n * @type {string}\n */\n get invalidExplanation() {\n return this.invalid ? this.invalid.explanation : null;\n }\n\n /**\n * Equality check\n * Two Durations are equal iff they have the same units and the same values for each unit.\n * @param {Duration} other\n * @return {boolean}\n */\n equals(other) {\n if (!this.isValid || !other.isValid) {\n return false;\n }\n\n if (!this.loc.equals(other.loc)) {\n return false;\n }\n\n function eq(v1, v2) {\n // Consider 0 and undefined as equal\n if (v1 === undefined || v1 === 0) return v2 === undefined || v2 === 0;\n return v1 === v2;\n }\n\n for (const u of orderedUnits) {\n if (!eq(this.values[u], other.values[u])) {\n return false;\n }\n }\n return true;\n }\n}\n","import DateTime, { friendlyDateTime } from \"./datetime.js\";\nimport Duration from \"./duration.js\";\nimport Settings from \"./settings.js\";\nimport { InvalidArgumentError, InvalidIntervalError } from \"./errors.js\";\nimport Invalid from \"./impl/invalid.js\";\nimport Formatter from \"./impl/formatter.js\";\nimport * as Formats from \"./impl/formats.js\";\n\nconst INVALID = \"Invalid Interval\";\n\n// checks if the start is equal to or before the end\nfunction validateStartEnd(start, end) {\n if (!start || !start.isValid) {\n return Interval.invalid(\"missing or invalid start\");\n } else if (!end || !end.isValid) {\n return Interval.invalid(\"missing or invalid end\");\n } else if (end < start) {\n return Interval.invalid(\n \"end before start\",\n `The end of an interval must be after its start, but you had start=${start.toISO()} and end=${end.toISO()}`\n );\n } else {\n return null;\n }\n}\n\n/**\n * An Interval object represents a half-open interval of time, where each endpoint is a {@link DateTime}. Conceptually, it's a container for those two endpoints, accompanied by methods for creating, parsing, interrogating, comparing, transforming, and formatting them.\n *\n * Here is a brief overview of the most commonly used methods and getters in Interval:\n *\n * * **Creation** To create an Interval, use {@link Interval.fromDateTimes}, {@link Interval.after}, {@link Interval.before}, or {@link Interval.fromISO}.\n * * **Accessors** Use {@link Interval#start} and {@link Interval#end} to get the start and end.\n * * **Interrogation** To analyze the Interval, use {@link Interval#count}, {@link Interval#length}, {@link Interval#hasSame}, {@link Interval#contains}, {@link Interval#isAfter}, or {@link Interval#isBefore}.\n * * **Transformation** To create other Intervals out of this one, use {@link Interval#set}, {@link Interval#splitAt}, {@link Interval#splitBy}, {@link Interval#divideEqually}, {@link Interval.merge}, {@link Interval.xor}, {@link Interval#union}, {@link Interval#intersection}, or {@link Interval#difference}.\n * * **Comparison** To compare this Interval to another one, use {@link Interval#equals}, {@link Interval#overlaps}, {@link Interval#abutsStart}, {@link Interval#abutsEnd}, {@link Interval#engulfs}\n * * **Output** To convert the Interval into other representations, see {@link Interval#toString}, {@link Interval#toLocaleString}, {@link Interval#toISO}, {@link Interval#toISODate}, {@link Interval#toISOTime}, {@link Interval#toFormat}, and {@link Interval#toDuration}.\n */\nexport default class Interval {\n /**\n * @private\n */\n constructor(config) {\n /**\n * @access private\n */\n this.s = config.start;\n /**\n * @access private\n */\n this.e = config.end;\n /**\n * @access private\n */\n this.invalid = config.invalid || null;\n /**\n * @access private\n */\n this.isLuxonInterval = true;\n }\n\n /**\n * Create an invalid Interval.\n * @param {string} reason - simple string of why this Interval is invalid. Should not contain parameters or anything else data-dependent\n * @param {string} [explanation=null] - longer explanation, may include parameters and other useful debugging information\n * @return {Interval}\n */\n static invalid(reason, explanation = null) {\n if (!reason) {\n throw new InvalidArgumentError(\"need to specify a reason the Interval is invalid\");\n }\n\n const invalid = reason instanceof Invalid ? reason : new Invalid(reason, explanation);\n\n if (Settings.throwOnInvalid) {\n throw new InvalidIntervalError(invalid);\n } else {\n return new Interval({ invalid });\n }\n }\n\n /**\n * Create an Interval from a start DateTime and an end DateTime. Inclusive of the start but not the end.\n * @param {DateTime|Date|Object} start\n * @param {DateTime|Date|Object} end\n * @return {Interval}\n */\n static fromDateTimes(start, end) {\n const builtStart = friendlyDateTime(start),\n builtEnd = friendlyDateTime(end);\n\n const validateError = validateStartEnd(builtStart, builtEnd);\n\n if (validateError == null) {\n return new Interval({\n start: builtStart,\n end: builtEnd,\n });\n } else {\n return validateError;\n }\n }\n\n /**\n * Create an Interval from a start DateTime and a Duration to extend to.\n * @param {DateTime|Date|Object} start\n * @param {Duration|Object|number} duration - the length of the Interval.\n * @return {Interval}\n */\n static after(start, duration) {\n const dur = Duration.fromDurationLike(duration),\n dt = friendlyDateTime(start);\n return Interval.fromDateTimes(dt, dt.plus(dur));\n }\n\n /**\n * Create an Interval from an end DateTime and a Duration to extend backwards to.\n * @param {DateTime|Date|Object} end\n * @param {Duration|Object|number} duration - the length of the Interval.\n * @return {Interval}\n */\n static before(end, duration) {\n const dur = Duration.fromDurationLike(duration),\n dt = friendlyDateTime(end);\n return Interval.fromDateTimes(dt.minus(dur), dt);\n }\n\n /**\n * Create an Interval from an ISO 8601 string.\n * Accepts `
' + func(text) + '
';\n * });\n *\n * p('fred, barney, & pebbles');\n * // => 'fred, barney, & pebbles
'\n */\n function wrap(value, wrapper) {\n return partial(castFunction(wrapper), value);\n }\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Casts `value` as an array if it's not one.\n *\n * @static\n * @memberOf _\n * @since 4.4.0\n * @category Lang\n * @param {*} value The value to inspect.\n * @returns {Array} Returns the cast array.\n * @example\n *\n * _.castArray(1);\n * // => [1]\n *\n * _.castArray({ 'a': 1 });\n * // => [{ 'a': 1 }]\n *\n * _.castArray('abc');\n * // => ['abc']\n *\n * _.castArray(null);\n * // => [null]\n *\n * _.castArray(undefined);\n * // => [undefined]\n *\n * _.castArray();\n * // => []\n *\n * var array = [1, 2, 3];\n * console.log(_.castArray(array) === array);\n * // => true\n */\n function castArray() {\n if (!arguments.length) {\n return [];\n }\n var value = arguments[0];\n return isArray(value) ? value : [value];\n }\n\n /**\n * Creates a shallow clone of `value`.\n *\n * **Note:** This method is loosely based on the\n * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm)\n * and supports cloning arrays, array buffers, booleans, date objects, maps,\n * numbers, `Object` objects, regexes, sets, strings, symbols, and typed\n * arrays. The own enumerable properties of `arguments` objects are cloned\n * as plain objects. An empty object is returned for uncloneable values such\n * as error objects, functions, DOM nodes, and WeakMaps.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to clone.\n * @returns {*} Returns the cloned value.\n * @see _.cloneDeep\n * @example\n *\n * var objects = [{ 'a': 1 }, { 'b': 2 }];\n *\n * var shallow = _.clone(objects);\n * console.log(shallow[0] === objects[0]);\n * // => true\n */\n function clone(value) {\n return baseClone(value, CLONE_SYMBOLS_FLAG);\n }\n\n /**\n * This method is like `_.clone` except that it accepts `customizer` which\n * is invoked to produce the cloned value. If `customizer` returns `undefined`,\n * cloning is handled by the method instead. The `customizer` is invoked with\n * up to four arguments; (value [, index|key, object, stack]).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to clone.\n * @param {Function} [customizer] The function to customize cloning.\n * @returns {*} Returns the cloned value.\n * @see _.cloneDeepWith\n * @example\n *\n * function customizer(value) {\n * if (_.isElement(value)) {\n * return value.cloneNode(false);\n * }\n * }\n *\n * var el = _.cloneWith(document.body, customizer);\n *\n * console.log(el === document.body);\n * // => false\n * console.log(el.nodeName);\n * // => 'BODY'\n * console.log(el.childNodes.length);\n * // => 0\n */\n function cloneWith(value, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n return baseClone(value, CLONE_SYMBOLS_FLAG, customizer);\n }\n\n /**\n * This method is like `_.clone` except that it recursively clones `value`.\n *\n * @static\n * @memberOf _\n * @since 1.0.0\n * @category Lang\n * @param {*} value The value to recursively clone.\n * @returns {*} Returns the deep cloned value.\n * @see _.clone\n * @example\n *\n * var objects = [{ 'a': 1 }, { 'b': 2 }];\n *\n * var deep = _.cloneDeep(objects);\n * console.log(deep[0] === objects[0]);\n * // => false\n */\n function cloneDeep(value) {\n return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG);\n }\n\n /**\n * This method is like `_.cloneWith` except that it recursively clones `value`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to recursively clone.\n * @param {Function} [customizer] The function to customize cloning.\n * @returns {*} Returns the deep cloned value.\n * @see _.cloneWith\n * @example\n *\n * function customizer(value) {\n * if (_.isElement(value)) {\n * return value.cloneNode(true);\n * }\n * }\n *\n * var el = _.cloneDeepWith(document.body, customizer);\n *\n * console.log(el === document.body);\n * // => false\n * console.log(el.nodeName);\n * // => 'BODY'\n * console.log(el.childNodes.length);\n * // => 20\n */\n function cloneDeepWith(value, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG, customizer);\n }\n\n /**\n * Checks if `object` conforms to `source` by invoking the predicate\n * properties of `source` with the corresponding property values of `object`.\n *\n * **Note:** This method is equivalent to `_.conforms` when `source` is\n * partially applied.\n *\n * @static\n * @memberOf _\n * @since 4.14.0\n * @category Lang\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property predicates to conform to.\n * @returns {boolean} Returns `true` if `object` conforms, else `false`.\n * @example\n *\n * var object = { 'a': 1, 'b': 2 };\n *\n * _.conformsTo(object, { 'b': function(n) { return n > 1; } });\n * // => true\n *\n * _.conformsTo(object, { 'b': function(n) { return n > 2; } });\n * // => false\n */\n function conformsTo(object, source) {\n return source == null || baseConformsTo(object, source, keys(source));\n }\n\n /**\n * Performs a\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * comparison between two values to determine if they are equivalent.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n * @example\n *\n * var object = { 'a': 1 };\n * var other = { 'a': 1 };\n *\n * _.eq(object, object);\n * // => true\n *\n * _.eq(object, other);\n * // => false\n *\n * _.eq('a', 'a');\n * // => true\n *\n * _.eq('a', Object('a'));\n * // => false\n *\n * _.eq(NaN, NaN);\n * // => true\n */\n function eq(value, other) {\n return value === other || (value !== value && other !== other);\n }\n\n /**\n * Checks if `value` is greater than `other`.\n *\n * @static\n * @memberOf _\n * @since 3.9.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if `value` is greater than `other`,\n * else `false`.\n * @see _.lt\n * @example\n *\n * _.gt(3, 1);\n * // => true\n *\n * _.gt(3, 3);\n * // => false\n *\n * _.gt(1, 3);\n * // => false\n */\n var gt = createRelationalOperation(baseGt);\n\n /**\n * Checks if `value` is greater than or equal to `other`.\n *\n * @static\n * @memberOf _\n * @since 3.9.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if `value` is greater than or equal to\n * `other`, else `false`.\n * @see _.lte\n * @example\n *\n * _.gte(3, 1);\n * // => true\n *\n * _.gte(3, 3);\n * // => true\n *\n * _.gte(1, 3);\n * // => false\n */\n var gte = createRelationalOperation(function(value, other) {\n return value >= other;\n });\n\n /**\n * Checks if `value` is likely an `arguments` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an `arguments` object,\n * else `false`.\n * @example\n *\n * _.isArguments(function() { return arguments; }());\n * // => true\n *\n * _.isArguments([1, 2, 3]);\n * // => false\n */\n var isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) {\n return isObjectLike(value) && hasOwnProperty.call(value, 'callee') &&\n !propertyIsEnumerable.call(value, 'callee');\n };\n\n /**\n * Checks if `value` is classified as an `Array` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array, else `false`.\n * @example\n *\n * _.isArray([1, 2, 3]);\n * // => true\n *\n * _.isArray(document.body.children);\n * // => false\n *\n * _.isArray('abc');\n * // => false\n *\n * _.isArray(_.noop);\n * // => false\n */\n var isArray = Array.isArray;\n\n /**\n * Checks if `value` is classified as an `ArrayBuffer` object.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.\n * @example\n *\n * _.isArrayBuffer(new ArrayBuffer(2));\n * // => true\n *\n * _.isArrayBuffer(new Array(2));\n * // => false\n */\n var isArrayBuffer = nodeIsArrayBuffer ? baseUnary(nodeIsArrayBuffer) : baseIsArrayBuffer;\n\n /**\n * Checks if `value` is array-like. A value is considered array-like if it's\n * not a function and has a `value.length` that's an integer greater than or\n * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is array-like, else `false`.\n * @example\n *\n * _.isArrayLike([1, 2, 3]);\n * // => true\n *\n * _.isArrayLike(document.body.children);\n * // => true\n *\n * _.isArrayLike('abc');\n * // => true\n *\n * _.isArrayLike(_.noop);\n * // => false\n */\n function isArrayLike(value) {\n return value != null && isLength(value.length) && !isFunction(value);\n }\n\n /**\n * This method is like `_.isArrayLike` except that it also checks if `value`\n * is an object.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array-like object,\n * else `false`.\n * @example\n *\n * _.isArrayLikeObject([1, 2, 3]);\n * // => true\n *\n * _.isArrayLikeObject(document.body.children);\n * // => true\n *\n * _.isArrayLikeObject('abc');\n * // => false\n *\n * _.isArrayLikeObject(_.noop);\n * // => false\n */\n function isArrayLikeObject(value) {\n return isObjectLike(value) && isArrayLike(value);\n }\n\n /**\n * Checks if `value` is classified as a boolean primitive or object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a boolean, else `false`.\n * @example\n *\n * _.isBoolean(false);\n * // => true\n *\n * _.isBoolean(null);\n * // => false\n */\n function isBoolean(value) {\n return value === true || value === false ||\n (isObjectLike(value) && baseGetTag(value) == boolTag);\n }\n\n /**\n * Checks if `value` is a buffer.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.\n * @example\n *\n * _.isBuffer(new Buffer(2));\n * // => true\n *\n * _.isBuffer(new Uint8Array(2));\n * // => false\n */\n var isBuffer = nativeIsBuffer || stubFalse;\n\n /**\n * Checks if `value` is classified as a `Date` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a date object, else `false`.\n * @example\n *\n * _.isDate(new Date);\n * // => true\n *\n * _.isDate('Mon April 23 2012');\n * // => false\n */\n var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate;\n\n /**\n * Checks if `value` is likely a DOM element.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a DOM element, else `false`.\n * @example\n *\n * _.isElement(document.body);\n * // => true\n *\n * _.isElement('');\n * // => false\n */\n function isElement(value) {\n return isObjectLike(value) && value.nodeType === 1 && !isPlainObject(value);\n }\n\n /**\n * Checks if `value` is an empty object, collection, map, or set.\n *\n * Objects are considered empty if they have no own enumerable string keyed\n * properties.\n *\n * Array-like values such as `arguments` objects, arrays, buffers, strings, or\n * jQuery-like collections are considered empty if they have a `length` of `0`.\n * Similarly, maps and sets are considered empty if they have a `size` of `0`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is empty, else `false`.\n * @example\n *\n * _.isEmpty(null);\n * // => true\n *\n * _.isEmpty(true);\n * // => true\n *\n * _.isEmpty(1);\n * // => true\n *\n * _.isEmpty([1, 2, 3]);\n * // => false\n *\n * _.isEmpty({ 'a': 1 });\n * // => false\n */\n function isEmpty(value) {\n if (value == null) {\n return true;\n }\n if (isArrayLike(value) &&\n (isArray(value) || typeof value == 'string' || typeof value.splice == 'function' ||\n isBuffer(value) || isTypedArray(value) || isArguments(value))) {\n return !value.length;\n }\n var tag = getTag(value);\n if (tag == mapTag || tag == setTag) {\n return !value.size;\n }\n if (isPrototype(value)) {\n return !baseKeys(value).length;\n }\n for (var key in value) {\n if (hasOwnProperty.call(value, key)) {\n return false;\n }\n }\n return true;\n }\n\n /**\n * Performs a deep comparison between two values to determine if they are\n * equivalent.\n *\n * **Note:** This method supports comparing arrays, array buffers, booleans,\n * date objects, error objects, maps, numbers, `Object` objects, regexes,\n * sets, strings, symbols, and typed arrays. `Object` objects are compared\n * by their own, not inherited, enumerable properties. Functions and DOM\n * nodes are compared by strict equality, i.e. `===`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n * @example\n *\n * var object = { 'a': 1 };\n * var other = { 'a': 1 };\n *\n * _.isEqual(object, other);\n * // => true\n *\n * object === other;\n * // => false\n */\n function isEqual(value, other) {\n return baseIsEqual(value, other);\n }\n\n /**\n * This method is like `_.isEqual` except that it accepts `customizer` which\n * is invoked to compare values. If `customizer` returns `undefined`, comparisons\n * are handled by the method instead. The `customizer` is invoked with up to\n * six arguments: (objValue, othValue [, index|key, object, other, stack]).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @param {Function} [customizer] The function to customize comparisons.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n * @example\n *\n * function isGreeting(value) {\n * return /^h(?:i|ello)$/.test(value);\n * }\n *\n * function customizer(objValue, othValue) {\n * if (isGreeting(objValue) && isGreeting(othValue)) {\n * return true;\n * }\n * }\n *\n * var array = ['hello', 'goodbye'];\n * var other = ['hi', 'goodbye'];\n *\n * _.isEqualWith(array, other, customizer);\n * // => true\n */\n function isEqualWith(value, other, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n var result = customizer ? customizer(value, other) : undefined;\n return result === undefined ? baseIsEqual(value, other, undefined, customizer) : !!result;\n }\n\n /**\n * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`,\n * `SyntaxError`, `TypeError`, or `URIError` object.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an error object, else `false`.\n * @example\n *\n * _.isError(new Error);\n * // => true\n *\n * _.isError(Error);\n * // => false\n */\n function isError(value) {\n if (!isObjectLike(value)) {\n return false;\n }\n var tag = baseGetTag(value);\n return tag == errorTag || tag == domExcTag ||\n (typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value));\n }\n\n /**\n * Checks if `value` is a finite primitive number.\n *\n * **Note:** This method is based on\n * [`Number.isFinite`](https://mdn.io/Number/isFinite).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a finite number, else `false`.\n * @example\n *\n * _.isFinite(3);\n * // => true\n *\n * _.isFinite(Number.MIN_VALUE);\n * // => true\n *\n * _.isFinite(Infinity);\n * // => false\n *\n * _.isFinite('3');\n * // => false\n */\n function isFinite(value) {\n return typeof value == 'number' && nativeIsFinite(value);\n }\n\n /**\n * Checks if `value` is classified as a `Function` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a function, else `false`.\n * @example\n *\n * _.isFunction(_);\n * // => true\n *\n * _.isFunction(/abc/);\n * // => false\n */\n function isFunction(value) {\n if (!isObject(value)) {\n return false;\n }\n // The use of `Object#toString` avoids issues with the `typeof` operator\n // in Safari 9 which returns 'object' for typed arrays and other constructors.\n var tag = baseGetTag(value);\n return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;\n }\n\n /**\n * Checks if `value` is an integer.\n *\n * **Note:** This method is based on\n * [`Number.isInteger`](https://mdn.io/Number/isInteger).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an integer, else `false`.\n * @example\n *\n * _.isInteger(3);\n * // => true\n *\n * _.isInteger(Number.MIN_VALUE);\n * // => false\n *\n * _.isInteger(Infinity);\n * // => false\n *\n * _.isInteger('3');\n * // => false\n */\n function isInteger(value) {\n return typeof value == 'number' && value == toInteger(value);\n }\n\n /**\n * Checks if `value` is a valid array-like length.\n *\n * **Note:** This method is loosely based on\n * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.\n * @example\n *\n * _.isLength(3);\n * // => true\n *\n * _.isLength(Number.MIN_VALUE);\n * // => false\n *\n * _.isLength(Infinity);\n * // => false\n *\n * _.isLength('3');\n * // => false\n */\n function isLength(value) {\n return typeof value == 'number' &&\n value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;\n }\n\n /**\n * Checks if `value` is the\n * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)\n * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an object, else `false`.\n * @example\n *\n * _.isObject({});\n * // => true\n *\n * _.isObject([1, 2, 3]);\n * // => true\n *\n * _.isObject(_.noop);\n * // => true\n *\n * _.isObject(null);\n * // => false\n */\n function isObject(value) {\n var type = typeof value;\n return value != null && (type == 'object' || type == 'function');\n }\n\n /**\n * Checks if `value` is object-like. A value is object-like if it's not `null`\n * and has a `typeof` result of \"object\".\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is object-like, else `false`.\n * @example\n *\n * _.isObjectLike({});\n * // => true\n *\n * _.isObjectLike([1, 2, 3]);\n * // => true\n *\n * _.isObjectLike(_.noop);\n * // => false\n *\n * _.isObjectLike(null);\n * // => false\n */\n function isObjectLike(value) {\n return value != null && typeof value == 'object';\n }\n\n /**\n * Checks if `value` is classified as a `Map` object.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a map, else `false`.\n * @example\n *\n * _.isMap(new Map);\n * // => true\n *\n * _.isMap(new WeakMap);\n * // => false\n */\n var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap;\n\n /**\n * Performs a partial deep comparison between `object` and `source` to\n * determine if `object` contains equivalent property values.\n *\n * **Note:** This method is equivalent to `_.matches` when `source` is\n * partially applied.\n *\n * Partial comparisons will match empty array and empty object `source`\n * values against any array or object value, respectively. See `_.isEqual`\n * for a list of supported value comparisons.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property values to match.\n * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n * @example\n *\n * var object = { 'a': 1, 'b': 2 };\n *\n * _.isMatch(object, { 'b': 2 });\n * // => true\n *\n * _.isMatch(object, { 'b': 1 });\n * // => false\n */\n function isMatch(object, source) {\n return object === source || baseIsMatch(object, source, getMatchData(source));\n }\n\n /**\n * This method is like `_.isMatch` except that it accepts `customizer` which\n * is invoked to compare values. If `customizer` returns `undefined`, comparisons\n * are handled by the method instead. The `customizer` is invoked with five\n * arguments: (objValue, srcValue, index|key, object, source).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property values to match.\n * @param {Function} [customizer] The function to customize comparisons.\n * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n * @example\n *\n * function isGreeting(value) {\n * return /^h(?:i|ello)$/.test(value);\n * }\n *\n * function customizer(objValue, srcValue) {\n * if (isGreeting(objValue) && isGreeting(srcValue)) {\n * return true;\n * }\n * }\n *\n * var object = { 'greeting': 'hello' };\n * var source = { 'greeting': 'hi' };\n *\n * _.isMatchWith(object, source, customizer);\n * // => true\n */\n function isMatchWith(object, source, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n return baseIsMatch(object, source, getMatchData(source), customizer);\n }\n\n /**\n * Checks if `value` is `NaN`.\n *\n * **Note:** This method is based on\n * [`Number.isNaN`](https://mdn.io/Number/isNaN) and is not the same as\n * global [`isNaN`](https://mdn.io/isNaN) which returns `true` for\n * `undefined` and other non-number values.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.\n * @example\n *\n * _.isNaN(NaN);\n * // => true\n *\n * _.isNaN(new Number(NaN));\n * // => true\n *\n * isNaN(undefined);\n * // => true\n *\n * _.isNaN(undefined);\n * // => false\n */\n function isNaN(value) {\n // An `NaN` primitive is the only value that is not equal to itself.\n // Perform the `toStringTag` check first to avoid errors with some\n // ActiveX objects in IE.\n return isNumber(value) && value != +value;\n }\n\n /**\n * Checks if `value` is a pristine native function.\n *\n * **Note:** This method can't reliably detect native functions in the presence\n * of the core-js package because core-js circumvents this kind of detection.\n * Despite multiple requests, the core-js maintainer has made it clear: any\n * attempt to fix the detection will be obstructed. As a result, we're left\n * with little choice but to throw an error. Unfortunately, this also affects\n * packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill),\n * which rely on core-js.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a native function,\n * else `false`.\n * @example\n *\n * _.isNative(Array.prototype.push);\n * // => true\n *\n * _.isNative(_);\n * // => false\n */\n function isNative(value) {\n if (isMaskable(value)) {\n throw new Error(CORE_ERROR_TEXT);\n }\n return baseIsNative(value);\n }\n\n /**\n * Checks if `value` is `null`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is `null`, else `false`.\n * @example\n *\n * _.isNull(null);\n * // => true\n *\n * _.isNull(void 0);\n * // => false\n */\n function isNull(value) {\n return value === null;\n }\n\n /**\n * Checks if `value` is `null` or `undefined`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is nullish, else `false`.\n * @example\n *\n * _.isNil(null);\n * // => true\n *\n * _.isNil(void 0);\n * // => true\n *\n * _.isNil(NaN);\n * // => false\n */\n function isNil(value) {\n return value == null;\n }\n\n /**\n * Checks if `value` is classified as a `Number` primitive or object.\n *\n * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are\n * classified as numbers, use the `_.isFinite` method.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a number, else `false`.\n * @example\n *\n * _.isNumber(3);\n * // => true\n *\n * _.isNumber(Number.MIN_VALUE);\n * // => true\n *\n * _.isNumber(Infinity);\n * // => true\n *\n * _.isNumber('3');\n * // => false\n */\n function isNumber(value) {\n return typeof value == 'number' ||\n (isObjectLike(value) && baseGetTag(value) == numberTag);\n }\n\n /**\n * Checks if `value` is a plain object, that is, an object created by the\n * `Object` constructor or one with a `[[Prototype]]` of `null`.\n *\n * @static\n * @memberOf _\n * @since 0.8.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * }\n *\n * _.isPlainObject(new Foo);\n * // => false\n *\n * _.isPlainObject([1, 2, 3]);\n * // => false\n *\n * _.isPlainObject({ 'x': 0, 'y': 0 });\n * // => true\n *\n * _.isPlainObject(Object.create(null));\n * // => true\n */\n function isPlainObject(value) {\n if (!isObjectLike(value) || baseGetTag(value) != objectTag) {\n return false;\n }\n var proto = getPrototype(value);\n if (proto === null) {\n return true;\n }\n var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;\n return typeof Ctor == 'function' && Ctor instanceof Ctor &&\n funcToString.call(Ctor) == objectCtorString;\n }\n\n /**\n * Checks if `value` is classified as a `RegExp` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.\n * @example\n *\n * _.isRegExp(/abc/);\n * // => true\n *\n * _.isRegExp('/abc/');\n * // => false\n */\n var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp;\n\n /**\n * Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754\n * double precision number which isn't the result of a rounded unsafe integer.\n *\n * **Note:** This method is based on\n * [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a safe integer, else `false`.\n * @example\n *\n * _.isSafeInteger(3);\n * // => true\n *\n * _.isSafeInteger(Number.MIN_VALUE);\n * // => false\n *\n * _.isSafeInteger(Infinity);\n * // => false\n *\n * _.isSafeInteger('3');\n * // => false\n */\n function isSafeInteger(value) {\n return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER;\n }\n\n /**\n * Checks if `value` is classified as a `Set` object.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a set, else `false`.\n * @example\n *\n * _.isSet(new Set);\n * // => true\n *\n * _.isSet(new WeakSet);\n * // => false\n */\n var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet;\n\n /**\n * Checks if `value` is classified as a `String` primitive or object.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a string, else `false`.\n * @example\n *\n * _.isString('abc');\n * // => true\n *\n * _.isString(1);\n * // => false\n */\n function isString(value) {\n return typeof value == 'string' ||\n (!isArray(value) && isObjectLike(value) && baseGetTag(value) == stringTag);\n }\n\n /**\n * Checks if `value` is classified as a `Symbol` primitive or object.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.\n * @example\n *\n * _.isSymbol(Symbol.iterator);\n * // => true\n *\n * _.isSymbol('abc');\n * // => false\n */\n function isSymbol(value) {\n return typeof value == 'symbol' ||\n (isObjectLike(value) && baseGetTag(value) == symbolTag);\n }\n\n /**\n * Checks if `value` is classified as a typed array.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.\n * @example\n *\n * _.isTypedArray(new Uint8Array);\n * // => true\n *\n * _.isTypedArray([]);\n * // => false\n */\n var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;\n\n /**\n * Checks if `value` is `undefined`.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.\n * @example\n *\n * _.isUndefined(void 0);\n * // => true\n *\n * _.isUndefined(null);\n * // => false\n */\n function isUndefined(value) {\n return value === undefined;\n }\n\n /**\n * Checks if `value` is classified as a `WeakMap` object.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a weak map, else `false`.\n * @example\n *\n * _.isWeakMap(new WeakMap);\n * // => true\n *\n * _.isWeakMap(new Map);\n * // => false\n */\n function isWeakMap(value) {\n return isObjectLike(value) && getTag(value) == weakMapTag;\n }\n\n /**\n * Checks if `value` is classified as a `WeakSet` object.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a weak set, else `false`.\n * @example\n *\n * _.isWeakSet(new WeakSet);\n * // => true\n *\n * _.isWeakSet(new Set);\n * // => false\n */\n function isWeakSet(value) {\n return isObjectLike(value) && baseGetTag(value) == weakSetTag;\n }\n\n /**\n * Checks if `value` is less than `other`.\n *\n * @static\n * @memberOf _\n * @since 3.9.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if `value` is less than `other`,\n * else `false`.\n * @see _.gt\n * @example\n *\n * _.lt(1, 3);\n * // => true\n *\n * _.lt(3, 3);\n * // => false\n *\n * _.lt(3, 1);\n * // => false\n */\n var lt = createRelationalOperation(baseLt);\n\n /**\n * Checks if `value` is less than or equal to `other`.\n *\n * @static\n * @memberOf _\n * @since 3.9.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if `value` is less than or equal to\n * `other`, else `false`.\n * @see _.gte\n * @example\n *\n * _.lte(1, 3);\n * // => true\n *\n * _.lte(3, 3);\n * // => true\n *\n * _.lte(3, 1);\n * // => false\n */\n var lte = createRelationalOperation(function(value, other) {\n return value <= other;\n });\n\n /**\n * Converts `value` to an array.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {Array} Returns the converted array.\n * @example\n *\n * _.toArray({ 'a': 1, 'b': 2 });\n * // => [1, 2]\n *\n * _.toArray('abc');\n * // => ['a', 'b', 'c']\n *\n * _.toArray(1);\n * // => []\n *\n * _.toArray(null);\n * // => []\n */\n function toArray(value) {\n if (!value) {\n return [];\n }\n if (isArrayLike(value)) {\n return isString(value) ? stringToArray(value) : copyArray(value);\n }\n if (symIterator && value[symIterator]) {\n return iteratorToArray(value[symIterator]());\n }\n var tag = getTag(value),\n func = tag == mapTag ? mapToArray : (tag == setTag ? setToArray : values);\n\n return func(value);\n }\n\n /**\n * Converts `value` to a finite number.\n *\n * @static\n * @memberOf _\n * @since 4.12.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted number.\n * @example\n *\n * _.toFinite(3.2);\n * // => 3.2\n *\n * _.toFinite(Number.MIN_VALUE);\n * // => 5e-324\n *\n * _.toFinite(Infinity);\n * // => 1.7976931348623157e+308\n *\n * _.toFinite('3.2');\n * // => 3.2\n */\n function toFinite(value) {\n if (!value) {\n return value === 0 ? value : 0;\n }\n value = toNumber(value);\n if (value === INFINITY || value === -INFINITY) {\n var sign = (value < 0 ? -1 : 1);\n return sign * MAX_INTEGER;\n }\n return value === value ? value : 0;\n }\n\n /**\n * Converts `value` to an integer.\n *\n * **Note:** This method is loosely based on\n * [`ToInteger`](http://www.ecma-international.org/ecma-262/7.0/#sec-tointeger).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted integer.\n * @example\n *\n * _.toInteger(3.2);\n * // => 3\n *\n * _.toInteger(Number.MIN_VALUE);\n * // => 0\n *\n * _.toInteger(Infinity);\n * // => 1.7976931348623157e+308\n *\n * _.toInteger('3.2');\n * // => 3\n */\n function toInteger(value) {\n var result = toFinite(value),\n remainder = result % 1;\n\n return result === result ? (remainder ? result - remainder : result) : 0;\n }\n\n /**\n * Converts `value` to an integer suitable for use as the length of an\n * array-like object.\n *\n * **Note:** This method is based on\n * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted integer.\n * @example\n *\n * _.toLength(3.2);\n * // => 3\n *\n * _.toLength(Number.MIN_VALUE);\n * // => 0\n *\n * _.toLength(Infinity);\n * // => 4294967295\n *\n * _.toLength('3.2');\n * // => 3\n */\n function toLength(value) {\n return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0;\n }\n\n /**\n * Converts `value` to a number.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to process.\n * @returns {number} Returns the number.\n * @example\n *\n * _.toNumber(3.2);\n * // => 3.2\n *\n * _.toNumber(Number.MIN_VALUE);\n * // => 5e-324\n *\n * _.toNumber(Infinity);\n * // => Infinity\n *\n * _.toNumber('3.2');\n * // => 3.2\n */\n function toNumber(value) {\n if (typeof value == 'number') {\n return value;\n }\n if (isSymbol(value)) {\n return NAN;\n }\n if (isObject(value)) {\n var other = typeof value.valueOf == 'function' ? value.valueOf() : value;\n value = isObject(other) ? (other + '') : other;\n }\n if (typeof value != 'string') {\n return value === 0 ? value : +value;\n }\n value = baseTrim(value);\n var isBinary = reIsBinary.test(value);\n return (isBinary || reIsOctal.test(value))\n ? freeParseInt(value.slice(2), isBinary ? 2 : 8)\n : (reIsBadHex.test(value) ? NAN : +value);\n }\n\n /**\n * Converts `value` to a plain object flattening inherited enumerable string\n * keyed properties of `value` to own properties of the plain object.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {Object} Returns the converted plain object.\n * @example\n *\n * function Foo() {\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.assign({ 'a': 1 }, new Foo);\n * // => { 'a': 1, 'b': 2 }\n *\n * _.assign({ 'a': 1 }, _.toPlainObject(new Foo));\n * // => { 'a': 1, 'b': 2, 'c': 3 }\n */\n function toPlainObject(value) {\n return copyObject(value, keysIn(value));\n }\n\n /**\n * Converts `value` to a safe integer. A safe integer can be compared and\n * represented correctly.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted integer.\n * @example\n *\n * _.toSafeInteger(3.2);\n * // => 3\n *\n * _.toSafeInteger(Number.MIN_VALUE);\n * // => 0\n *\n * _.toSafeInteger(Infinity);\n * // => 9007199254740991\n *\n * _.toSafeInteger('3.2');\n * // => 3\n */\n function toSafeInteger(value) {\n return value\n ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER)\n : (value === 0 ? value : 0);\n }\n\n /**\n * Converts `value` to a string. An empty string is returned for `null`\n * and `undefined` values. The sign of `-0` is preserved.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {string} Returns the converted string.\n * @example\n *\n * _.toString(null);\n * // => ''\n *\n * _.toString(-0);\n * // => '-0'\n *\n * _.toString([1, 2, 3]);\n * // => '1,2,3'\n */\n function toString(value) {\n return value == null ? '' : baseToString(value);\n }\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Assigns own enumerable string keyed properties of source objects to the\n * destination object. Source objects are applied from left to right.\n * Subsequent sources overwrite property assignments of previous sources.\n *\n * **Note:** This method mutates `object` and is loosely based on\n * [`Object.assign`](https://mdn.io/Object/assign).\n *\n * @static\n * @memberOf _\n * @since 0.10.0\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} [sources] The source objects.\n * @returns {Object} Returns `object`.\n * @see _.assignIn\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * }\n *\n * function Bar() {\n * this.c = 3;\n * }\n *\n * Foo.prototype.b = 2;\n * Bar.prototype.d = 4;\n *\n * _.assign({ 'a': 0 }, new Foo, new Bar);\n * // => { 'a': 1, 'c': 3 }\n */\n var assign = createAssigner(function(object, source) {\n if (isPrototype(source) || isArrayLike(source)) {\n copyObject(source, keys(source), object);\n return;\n }\n for (var key in source) {\n if (hasOwnProperty.call(source, key)) {\n assignValue(object, key, source[key]);\n }\n }\n });\n\n /**\n * This method is like `_.assign` except that it iterates over own and\n * inherited source properties.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @alias extend\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} [sources] The source objects.\n * @returns {Object} Returns `object`.\n * @see _.assign\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * }\n *\n * function Bar() {\n * this.c = 3;\n * }\n *\n * Foo.prototype.b = 2;\n * Bar.prototype.d = 4;\n *\n * _.assignIn({ 'a': 0 }, new Foo, new Bar);\n * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 }\n */\n var assignIn = createAssigner(function(object, source) {\n copyObject(source, keysIn(source), object);\n });\n\n /**\n * This method is like `_.assignIn` except that it accepts `customizer`\n * which is invoked to produce the assigned values. If `customizer` returns\n * `undefined`, assignment is handled by the method instead. The `customizer`\n * is invoked with five arguments: (objValue, srcValue, key, object, source).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @alias extendWith\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} sources The source objects.\n * @param {Function} [customizer] The function to customize assigned values.\n * @returns {Object} Returns `object`.\n * @see _.assignWith\n * @example\n *\n * function customizer(objValue, srcValue) {\n * return _.isUndefined(objValue) ? srcValue : objValue;\n * }\n *\n * var defaults = _.partialRight(_.assignInWith, customizer);\n *\n * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\n * // => { 'a': 1, 'b': 2 }\n */\n var assignInWith = createAssigner(function(object, source, srcIndex, customizer) {\n copyObject(source, keysIn(source), object, customizer);\n });\n\n /**\n * This method is like `_.assign` except that it accepts `customizer`\n * which is invoked to produce the assigned values. If `customizer` returns\n * `undefined`, assignment is handled by the method instead. The `customizer`\n * is invoked with five arguments: (objValue, srcValue, key, object, source).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} sources The source objects.\n * @param {Function} [customizer] The function to customize assigned values.\n * @returns {Object} Returns `object`.\n * @see _.assignInWith\n * @example\n *\n * function customizer(objValue, srcValue) {\n * return _.isUndefined(objValue) ? srcValue : objValue;\n * }\n *\n * var defaults = _.partialRight(_.assignWith, customizer);\n *\n * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\n * // => { 'a': 1, 'b': 2 }\n */\n var assignWith = createAssigner(function(object, source, srcIndex, customizer) {\n copyObject(source, keys(source), object, customizer);\n });\n\n /**\n * Creates an array of values corresponding to `paths` of `object`.\n *\n * @static\n * @memberOf _\n * @since 1.0.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {...(string|string[])} [paths] The property paths to pick.\n * @returns {Array} Returns the picked values.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };\n *\n * _.at(object, ['a[0].b.c', 'a[1]']);\n * // => [3, 4]\n */\n var at = flatRest(baseAt);\n\n /**\n * Creates an object that inherits from the `prototype` object. If a\n * `properties` object is given, its own enumerable string keyed properties\n * are assigned to the created object.\n *\n * @static\n * @memberOf _\n * @since 2.3.0\n * @category Object\n * @param {Object} prototype The object to inherit from.\n * @param {Object} [properties] The properties to assign to the object.\n * @returns {Object} Returns the new object.\n * @example\n *\n * function Shape() {\n * this.x = 0;\n * this.y = 0;\n * }\n *\n * function Circle() {\n * Shape.call(this);\n * }\n *\n * Circle.prototype = _.create(Shape.prototype, {\n * 'constructor': Circle\n * });\n *\n * var circle = new Circle;\n * circle instanceof Circle;\n * // => true\n *\n * circle instanceof Shape;\n * // => true\n */\n function create(prototype, properties) {\n var result = baseCreate(prototype);\n return properties == null ? result : baseAssign(result, properties);\n }\n\n /**\n * Assigns own and inherited enumerable string keyed properties of source\n * objects to the destination object for all destination properties that\n * resolve to `undefined`. Source objects are applied from left to right.\n * Once a property is set, additional values of the same property are ignored.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} [sources] The source objects.\n * @returns {Object} Returns `object`.\n * @see _.defaultsDeep\n * @example\n *\n * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\n * // => { 'a': 1, 'b': 2 }\n */\n var defaults = baseRest(function(object, sources) {\n object = Object(object);\n\n var index = -1;\n var length = sources.length;\n var guard = length > 2 ? sources[2] : undefined;\n\n if (guard && isIterateeCall(sources[0], sources[1], guard)) {\n length = 1;\n }\n\n while (++index < length) {\n var source = sources[index];\n var props = keysIn(source);\n var propsIndex = -1;\n var propsLength = props.length;\n\n while (++propsIndex < propsLength) {\n var key = props[propsIndex];\n var value = object[key];\n\n if (value === undefined ||\n (eq(value, objectProto[key]) && !hasOwnProperty.call(object, key))) {\n object[key] = source[key];\n }\n }\n }\n\n return object;\n });\n\n /**\n * This method is like `_.defaults` except that it recursively assigns\n * default properties.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 3.10.0\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} [sources] The source objects.\n * @returns {Object} Returns `object`.\n * @see _.defaults\n * @example\n *\n * _.defaultsDeep({ 'a': { 'b': 2 } }, { 'a': { 'b': 1, 'c': 3 } });\n * // => { 'a': { 'b': 2, 'c': 3 } }\n */\n var defaultsDeep = baseRest(function(args) {\n args.push(undefined, customDefaultsMerge);\n return apply(mergeWith, undefined, args);\n });\n\n /**\n * This method is like `_.find` except that it returns the key of the first\n * element `predicate` returns truthy for instead of the element itself.\n *\n * @static\n * @memberOf _\n * @since 1.1.0\n * @category Object\n * @param {Object} object The object to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {string|undefined} Returns the key of the matched element,\n * else `undefined`.\n * @example\n *\n * var users = {\n * 'barney': { 'age': 36, 'active': true },\n * 'fred': { 'age': 40, 'active': false },\n * 'pebbles': { 'age': 1, 'active': true }\n * };\n *\n * _.findKey(users, function(o) { return o.age < 40; });\n * // => 'barney' (iteration order is not guaranteed)\n *\n * // The `_.matches` iteratee shorthand.\n * _.findKey(users, { 'age': 1, 'active': true });\n * // => 'pebbles'\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.findKey(users, ['active', false]);\n * // => 'fred'\n *\n * // The `_.property` iteratee shorthand.\n * _.findKey(users, 'active');\n * // => 'barney'\n */\n function findKey(object, predicate) {\n return baseFindKey(object, getIteratee(predicate, 3), baseForOwn);\n }\n\n /**\n * This method is like `_.findKey` except that it iterates over elements of\n * a collection in the opposite order.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Object\n * @param {Object} object The object to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {string|undefined} Returns the key of the matched element,\n * else `undefined`.\n * @example\n *\n * var users = {\n * 'barney': { 'age': 36, 'active': true },\n * 'fred': { 'age': 40, 'active': false },\n * 'pebbles': { 'age': 1, 'active': true }\n * };\n *\n * _.findLastKey(users, function(o) { return o.age < 40; });\n * // => returns 'pebbles' assuming `_.findKey` returns 'barney'\n *\n * // The `_.matches` iteratee shorthand.\n * _.findLastKey(users, { 'age': 36, 'active': true });\n * // => 'barney'\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.findLastKey(users, ['active', false]);\n * // => 'fred'\n *\n * // The `_.property` iteratee shorthand.\n * _.findLastKey(users, 'active');\n * // => 'pebbles'\n */\n function findLastKey(object, predicate) {\n return baseFindKey(object, getIteratee(predicate, 3), baseForOwnRight);\n }\n\n /**\n * Iterates over own and inherited enumerable string keyed properties of an\n * object and invokes `iteratee` for each property. The iteratee is invoked\n * with three arguments: (value, key, object). Iteratee functions may exit\n * iteration early by explicitly returning `false`.\n *\n * @static\n * @memberOf _\n * @since 0.3.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns `object`.\n * @see _.forInRight\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.forIn(new Foo, function(value, key) {\n * console.log(key);\n * });\n * // => Logs 'a', 'b', then 'c' (iteration order is not guaranteed).\n */\n function forIn(object, iteratee) {\n return object == null\n ? object\n : baseFor(object, getIteratee(iteratee, 3), keysIn);\n }\n\n /**\n * This method is like `_.forIn` except that it iterates over properties of\n * `object` in the opposite order.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns `object`.\n * @see _.forIn\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.forInRight(new Foo, function(value, key) {\n * console.log(key);\n * });\n * // => Logs 'c', 'b', then 'a' assuming `_.forIn` logs 'a', 'b', then 'c'.\n */\n function forInRight(object, iteratee) {\n return object == null\n ? object\n : baseForRight(object, getIteratee(iteratee, 3), keysIn);\n }\n\n /**\n * Iterates over own enumerable string keyed properties of an object and\n * invokes `iteratee` for each property. The iteratee is invoked with three\n * arguments: (value, key, object). Iteratee functions may exit iteration\n * early by explicitly returning `false`.\n *\n * @static\n * @memberOf _\n * @since 0.3.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns `object`.\n * @see _.forOwnRight\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.forOwn(new Foo, function(value, key) {\n * console.log(key);\n * });\n * // => Logs 'a' then 'b' (iteration order is not guaranteed).\n */\n function forOwn(object, iteratee) {\n return object && baseForOwn(object, getIteratee(iteratee, 3));\n }\n\n /**\n * This method is like `_.forOwn` except that it iterates over properties of\n * `object` in the opposite order.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns `object`.\n * @see _.forOwn\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.forOwnRight(new Foo, function(value, key) {\n * console.log(key);\n * });\n * // => Logs 'b' then 'a' assuming `_.forOwn` logs 'a' then 'b'.\n */\n function forOwnRight(object, iteratee) {\n return object && baseForOwnRight(object, getIteratee(iteratee, 3));\n }\n\n /**\n * Creates an array of function property names from own enumerable properties\n * of `object`.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to inspect.\n * @returns {Array} Returns the function names.\n * @see _.functionsIn\n * @example\n *\n * function Foo() {\n * this.a = _.constant('a');\n * this.b = _.constant('b');\n * }\n *\n * Foo.prototype.c = _.constant('c');\n *\n * _.functions(new Foo);\n * // => ['a', 'b']\n */\n function functions(object) {\n return object == null ? [] : baseFunctions(object, keys(object));\n }\n\n /**\n * Creates an array of function property names from own and inherited\n * enumerable properties of `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to inspect.\n * @returns {Array} Returns the function names.\n * @see _.functions\n * @example\n *\n * function Foo() {\n * this.a = _.constant('a');\n * this.b = _.constant('b');\n * }\n *\n * Foo.prototype.c = _.constant('c');\n *\n * _.functionsIn(new Foo);\n * // => ['a', 'b', 'c']\n */\n function functionsIn(object) {\n return object == null ? [] : baseFunctions(object, keysIn(object));\n }\n\n /**\n * Gets the value at `path` of `object`. If the resolved value is\n * `undefined`, the `defaultValue` is returned in its place.\n *\n * @static\n * @memberOf _\n * @since 3.7.0\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the property to get.\n * @param {*} [defaultValue] The value returned for `undefined` resolved values.\n * @returns {*} Returns the resolved value.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n *\n * _.get(object, 'a[0].b.c');\n * // => 3\n *\n * _.get(object, ['a', '0', 'b', 'c']);\n * // => 3\n *\n * _.get(object, 'a.b.c', 'default');\n * // => 'default'\n */\n function get(object, path, defaultValue) {\n var result = object == null ? undefined : baseGet(object, path);\n return result === undefined ? defaultValue : result;\n }\n\n /**\n * Checks if `path` is a direct property of `object`.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path to check.\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\n * @example\n *\n * var object = { 'a': { 'b': 2 } };\n * var other = _.create({ 'a': _.create({ 'b': 2 }) });\n *\n * _.has(object, 'a');\n * // => true\n *\n * _.has(object, 'a.b');\n * // => true\n *\n * _.has(object, ['a', 'b']);\n * // => true\n *\n * _.has(other, 'a');\n * // => false\n */\n function has(object, path) {\n return object != null && hasPath(object, path, baseHas);\n }\n\n /**\n * Checks if `path` is a direct or inherited property of `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path to check.\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\n * @example\n *\n * var object = _.create({ 'a': _.create({ 'b': 2 }) });\n *\n * _.hasIn(object, 'a');\n * // => true\n *\n * _.hasIn(object, 'a.b');\n * // => true\n *\n * _.hasIn(object, ['a', 'b']);\n * // => true\n *\n * _.hasIn(object, 'b');\n * // => false\n */\n function hasIn(object, path) {\n return object != null && hasPath(object, path, baseHasIn);\n }\n\n /**\n * Creates an object composed of the inverted keys and values of `object`.\n * If `object` contains duplicate values, subsequent values overwrite\n * property assignments of previous values.\n *\n * @static\n * @memberOf _\n * @since 0.7.0\n * @category Object\n * @param {Object} object The object to invert.\n * @returns {Object} Returns the new inverted object.\n * @example\n *\n * var object = { 'a': 1, 'b': 2, 'c': 1 };\n *\n * _.invert(object);\n * // => { '1': 'c', '2': 'b' }\n */\n var invert = createInverter(function(result, value, key) {\n if (value != null &&\n typeof value.toString != 'function') {\n value = nativeObjectToString.call(value);\n }\n\n result[value] = key;\n }, constant(identity));\n\n /**\n * This method is like `_.invert` except that the inverted object is generated\n * from the results of running each element of `object` thru `iteratee`. The\n * corresponding inverted value of each inverted key is an array of keys\n * responsible for generating the inverted value. The iteratee is invoked\n * with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.1.0\n * @category Object\n * @param {Object} object The object to invert.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Object} Returns the new inverted object.\n * @example\n *\n * var object = { 'a': 1, 'b': 2, 'c': 1 };\n *\n * _.invertBy(object);\n * // => { '1': ['a', 'c'], '2': ['b'] }\n *\n * _.invertBy(object, function(value) {\n * return 'group' + value;\n * });\n * // => { 'group1': ['a', 'c'], 'group2': ['b'] }\n */\n var invertBy = createInverter(function(result, value, key) {\n if (value != null &&\n typeof value.toString != 'function') {\n value = nativeObjectToString.call(value);\n }\n\n if (hasOwnProperty.call(result, value)) {\n result[value].push(key);\n } else {\n result[value] = [key];\n }\n }, getIteratee);\n\n /**\n * Invokes the method at `path` of `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the method to invoke.\n * @param {...*} [args] The arguments to invoke the method with.\n * @returns {*} Returns the result of the invoked method.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': [1, 2, 3, 4] } }] };\n *\n * _.invoke(object, 'a[0].b.c.slice', 1, 3);\n * // => [2, 3]\n */\n var invoke = baseRest(baseInvoke);\n\n /**\n * Creates an array of the own enumerable property names of `object`.\n *\n * **Note:** Non-object values are coerced to objects. See the\n * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)\n * for more details.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.keys(new Foo);\n * // => ['a', 'b'] (iteration order is not guaranteed)\n *\n * _.keys('hi');\n * // => ['0', '1']\n */\n function keys(object) {\n return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);\n }\n\n /**\n * Creates an array of the own and inherited enumerable property names of `object`.\n *\n * **Note:** Non-object values are coerced to objects.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.keysIn(new Foo);\n * // => ['a', 'b', 'c'] (iteration order is not guaranteed)\n */\n function keysIn(object) {\n return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object);\n }\n\n /**\n * The opposite of `_.mapValues`; this method creates an object with the\n * same values as `object` and keys generated by running each own enumerable\n * string keyed property of `object` thru `iteratee`. The iteratee is invoked\n * with three arguments: (value, key, object).\n *\n * @static\n * @memberOf _\n * @since 3.8.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns the new mapped object.\n * @see _.mapValues\n * @example\n *\n * _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) {\n * return key + value;\n * });\n * // => { 'a1': 1, 'b2': 2 }\n */\n function mapKeys(object, iteratee) {\n var result = {};\n iteratee = getIteratee(iteratee, 3);\n\n baseForOwn(object, function(value, key, object) {\n baseAssignValue(result, iteratee(value, key, object), value);\n });\n return result;\n }\n\n /**\n * Creates an object with the same keys as `object` and values generated\n * by running each own enumerable string keyed property of `object` thru\n * `iteratee`. The iteratee is invoked with three arguments:\n * (value, key, object).\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns the new mapped object.\n * @see _.mapKeys\n * @example\n *\n * var users = {\n * 'fred': { 'user': 'fred', 'age': 40 },\n * 'pebbles': { 'user': 'pebbles', 'age': 1 }\n * };\n *\n * _.mapValues(users, function(o) { return o.age; });\n * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)\n *\n * // The `_.property` iteratee shorthand.\n * _.mapValues(users, 'age');\n * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)\n */\n function mapValues(object, iteratee) {\n var result = {};\n iteratee = getIteratee(iteratee, 3);\n\n baseForOwn(object, function(value, key, object) {\n baseAssignValue(result, key, iteratee(value, key, object));\n });\n return result;\n }\n\n /**\n * This method is like `_.assign` except that it recursively merges own and\n * inherited enumerable string keyed properties of source objects into the\n * destination object. Source properties that resolve to `undefined` are\n * skipped if a destination value exists. Array and plain object properties\n * are merged recursively. Other objects and value types are overridden by\n * assignment. Source objects are applied from left to right. Subsequent\n * sources overwrite property assignments of previous sources.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 0.5.0\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} [sources] The source objects.\n * @returns {Object} Returns `object`.\n * @example\n *\n * var object = {\n * 'a': [{ 'b': 2 }, { 'd': 4 }]\n * };\n *\n * var other = {\n * 'a': [{ 'c': 3 }, { 'e': 5 }]\n * };\n *\n * _.merge(object, other);\n * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] }\n */\n var merge = createAssigner(function(object, source, srcIndex) {\n baseMerge(object, source, srcIndex);\n });\n\n /**\n * This method is like `_.merge` except that it accepts `customizer` which\n * is invoked to produce the merged values of the destination and source\n * properties. If `customizer` returns `undefined`, merging is handled by the\n * method instead. The `customizer` is invoked with six arguments:\n * (objValue, srcValue, key, object, source, stack).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} sources The source objects.\n * @param {Function} customizer The function to customize assigned values.\n * @returns {Object} Returns `object`.\n * @example\n *\n * function customizer(objValue, srcValue) {\n * if (_.isArray(objValue)) {\n * return objValue.concat(srcValue);\n * }\n * }\n *\n * var object = { 'a': [1], 'b': [2] };\n * var other = { 'a': [3], 'b': [4] };\n *\n * _.mergeWith(object, other, customizer);\n * // => { 'a': [1, 3], 'b': [2, 4] }\n */\n var mergeWith = createAssigner(function(object, source, srcIndex, customizer) {\n baseMerge(object, source, srcIndex, customizer);\n });\n\n /**\n * The opposite of `_.pick`; this method creates an object composed of the\n * own and inherited enumerable property paths of `object` that are not omitted.\n *\n * **Note:** This method is considerably slower than `_.pick`.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The source object.\n * @param {...(string|string[])} [paths] The property paths to omit.\n * @returns {Object} Returns the new object.\n * @example\n *\n * var object = { 'a': 1, 'b': '2', 'c': 3 };\n *\n * _.omit(object, ['a', 'c']);\n * // => { 'b': '2' }\n */\n var omit = flatRest(function(object, paths) {\n var result = {};\n if (object == null) {\n return result;\n }\n var isDeep = false;\n paths = arrayMap(paths, function(path) {\n path = castPath(path, object);\n isDeep || (isDeep = path.length > 1);\n return path;\n });\n copyObject(object, getAllKeysIn(object), result);\n if (isDeep) {\n result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone);\n }\n var length = paths.length;\n while (length--) {\n baseUnset(result, paths[length]);\n }\n return result;\n });\n\n /**\n * The opposite of `_.pickBy`; this method creates an object composed of\n * the own and inherited enumerable string keyed properties of `object` that\n * `predicate` doesn't return truthy for. The predicate is invoked with two\n * arguments: (value, key).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The source object.\n * @param {Function} [predicate=_.identity] The function invoked per property.\n * @returns {Object} Returns the new object.\n * @example\n *\n * var object = { 'a': 1, 'b': '2', 'c': 3 };\n *\n * _.omitBy(object, _.isNumber);\n * // => { 'b': '2' }\n */\n function omitBy(object, predicate) {\n return pickBy(object, negate(getIteratee(predicate)));\n }\n\n /**\n * Creates an object composed of the picked `object` properties.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The source object.\n * @param {...(string|string[])} [paths] The property paths to pick.\n * @returns {Object} Returns the new object.\n * @example\n *\n * var object = { 'a': 1, 'b': '2', 'c': 3 };\n *\n * _.pick(object, ['a', 'c']);\n * // => { 'a': 1, 'c': 3 }\n */\n var pick = flatRest(function(object, paths) {\n return object == null ? {} : basePick(object, paths);\n });\n\n /**\n * Creates an object composed of the `object` properties `predicate` returns\n * truthy for. The predicate is invoked with two arguments: (value, key).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The source object.\n * @param {Function} [predicate=_.identity] The function invoked per property.\n * @returns {Object} Returns the new object.\n * @example\n *\n * var object = { 'a': 1, 'b': '2', 'c': 3 };\n *\n * _.pickBy(object, _.isNumber);\n * // => { 'a': 1, 'c': 3 }\n */\n function pickBy(object, predicate) {\n if (object == null) {\n return {};\n }\n var props = arrayMap(getAllKeysIn(object), function(prop) {\n return [prop];\n });\n predicate = getIteratee(predicate);\n return basePickBy(object, props, function(value, path) {\n return predicate(value, path[0]);\n });\n }\n\n /**\n * This method is like `_.get` except that if the resolved value is a\n * function it's invoked with the `this` binding of its parent object and\n * its result is returned.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the property to resolve.\n * @param {*} [defaultValue] The value returned for `undefined` resolved values.\n * @returns {*} Returns the resolved value.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] };\n *\n * _.result(object, 'a[0].b.c1');\n * // => 3\n *\n * _.result(object, 'a[0].b.c2');\n * // => 4\n *\n * _.result(object, 'a[0].b.c3', 'default');\n * // => 'default'\n *\n * _.result(object, 'a[0].b.c3', _.constant('default'));\n * // => 'default'\n */\n function result(object, path, defaultValue) {\n path = castPath(path, object);\n\n var index = -1,\n length = path.length;\n\n // Ensure the loop is entered when path is empty.\n if (!length) {\n length = 1;\n object = undefined;\n }\n while (++index < length) {\n var value = object == null ? undefined : object[toKey(path[index])];\n if (value === undefined) {\n index = length;\n value = defaultValue;\n }\n object = isFunction(value) ? value.call(object) : value;\n }\n return object;\n }\n\n /**\n * Sets the value at `path` of `object`. If a portion of `path` doesn't exist,\n * it's created. Arrays are created for missing index properties while objects\n * are created for all other missing properties. Use `_.setWith` to customize\n * `path` creation.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 3.7.0\n * @category Object\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns `object`.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n *\n * _.set(object, 'a[0].b.c', 4);\n * console.log(object.a[0].b.c);\n * // => 4\n *\n * _.set(object, ['x', '0', 'y', 'z'], 5);\n * console.log(object.x[0].y.z);\n * // => 5\n */\n function set(object, path, value) {\n return object == null ? object : baseSet(object, path, value);\n }\n\n /**\n * This method is like `_.set` except that it accepts `customizer` which is\n * invoked to produce the objects of `path`. If `customizer` returns `undefined`\n * path creation is handled by the method instead. The `customizer` is invoked\n * with three arguments: (nsValue, key, nsObject).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to set.\n * @param {*} value The value to set.\n * @param {Function} [customizer] The function to customize assigned values.\n * @returns {Object} Returns `object`.\n * @example\n *\n * var object = {};\n *\n * _.setWith(object, '[0][1]', 'a', Object);\n * // => { '0': { '1': 'a' } }\n */\n function setWith(object, path, value, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n return object == null ? object : baseSet(object, path, value, customizer);\n }\n\n /**\n * Creates an array of own enumerable string keyed-value pairs for `object`\n * which can be consumed by `_.fromPairs`. If `object` is a map or set, its\n * entries are returned.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @alias entries\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the key-value pairs.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.toPairs(new Foo);\n * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed)\n */\n var toPairs = createToPairs(keys);\n\n /**\n * Creates an array of own and inherited enumerable string keyed-value pairs\n * for `object` which can be consumed by `_.fromPairs`. If `object` is a map\n * or set, its entries are returned.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @alias entriesIn\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the key-value pairs.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.toPairsIn(new Foo);\n * // => [['a', 1], ['b', 2], ['c', 3]] (iteration order is not guaranteed)\n */\n var toPairsIn = createToPairs(keysIn);\n\n /**\n * An alternative to `_.reduce`; this method transforms `object` to a new\n * `accumulator` object which is the result of running each of its own\n * enumerable string keyed properties thru `iteratee`, with each invocation\n * potentially mutating the `accumulator` object. If `accumulator` is not\n * provided, a new object with the same `[[Prototype]]` will be used. The\n * iteratee is invoked with four arguments: (accumulator, value, key, object).\n * Iteratee functions may exit iteration early by explicitly returning `false`.\n *\n * @static\n * @memberOf _\n * @since 1.3.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @param {*} [accumulator] The custom accumulator value.\n * @returns {*} Returns the accumulated value.\n * @example\n *\n * _.transform([2, 3, 4], function(result, n) {\n * result.push(n *= n);\n * return n % 2 == 0;\n * }, []);\n * // => [4, 9]\n *\n * _.transform({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {\n * (result[value] || (result[value] = [])).push(key);\n * }, {});\n * // => { '1': ['a', 'c'], '2': ['b'] }\n */\n function transform(object, iteratee, accumulator) {\n var isArr = isArray(object),\n isArrLike = isArr || isBuffer(object) || isTypedArray(object);\n\n iteratee = getIteratee(iteratee, 4);\n if (accumulator == null) {\n var Ctor = object && object.constructor;\n if (isArrLike) {\n accumulator = isArr ? new Ctor : [];\n }\n else if (isObject(object)) {\n accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {};\n }\n else {\n accumulator = {};\n }\n }\n (isArrLike ? arrayEach : baseForOwn)(object, function(value, index, object) {\n return iteratee(accumulator, value, index, object);\n });\n return accumulator;\n }\n\n /**\n * Removes the property at `path` of `object`.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to unset.\n * @returns {boolean} Returns `true` if the property is deleted, else `false`.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 7 } }] };\n * _.unset(object, 'a[0].b.c');\n * // => true\n *\n * console.log(object);\n * // => { 'a': [{ 'b': {} }] };\n *\n * _.unset(object, ['a', '0', 'b', 'c']);\n * // => true\n *\n * console.log(object);\n * // => { 'a': [{ 'b': {} }] };\n */\n function unset(object, path) {\n return object == null ? true : baseUnset(object, path);\n }\n\n /**\n * This method is like `_.set` except that accepts `updater` to produce the\n * value to set. Use `_.updateWith` to customize `path` creation. The `updater`\n * is invoked with one argument: (value).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.6.0\n * @category Object\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to set.\n * @param {Function} updater The function to produce the updated value.\n * @returns {Object} Returns `object`.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n *\n * _.update(object, 'a[0].b.c', function(n) { return n * n; });\n * console.log(object.a[0].b.c);\n * // => 9\n *\n * _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; });\n * console.log(object.x[0].y.z);\n * // => 0\n */\n function update(object, path, updater) {\n return object == null ? object : baseUpdate(object, path, castFunction(updater));\n }\n\n /**\n * This method is like `_.update` except that it accepts `customizer` which is\n * invoked to produce the objects of `path`. If `customizer` returns `undefined`\n * path creation is handled by the method instead. The `customizer` is invoked\n * with three arguments: (nsValue, key, nsObject).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.6.0\n * @category Object\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to set.\n * @param {Function} updater The function to produce the updated value.\n * @param {Function} [customizer] The function to customize assigned values.\n * @returns {Object} Returns `object`.\n * @example\n *\n * var object = {};\n *\n * _.updateWith(object, '[0][1]', _.constant('a'), Object);\n * // => { '0': { '1': 'a' } }\n */\n function updateWith(object, path, updater, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n return object == null ? object : baseUpdate(object, path, castFunction(updater), customizer);\n }\n\n /**\n * Creates an array of the own enumerable string keyed property values of `object`.\n *\n * **Note:** Non-object values are coerced to objects.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property values.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.values(new Foo);\n * // => [1, 2] (iteration order is not guaranteed)\n *\n * _.values('hi');\n * // => ['h', 'i']\n */\n function values(object) {\n return object == null ? [] : baseValues(object, keys(object));\n }\n\n /**\n * Creates an array of the own and inherited enumerable string keyed property\n * values of `object`.\n *\n * **Note:** Non-object values are coerced to objects.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property values.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.valuesIn(new Foo);\n * // => [1, 2, 3] (iteration order is not guaranteed)\n */\n function valuesIn(object) {\n return object == null ? [] : baseValues(object, keysIn(object));\n }\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Clamps `number` within the inclusive `lower` and `upper` bounds.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Number\n * @param {number} number The number to clamp.\n * @param {number} [lower] The lower bound.\n * @param {number} upper The upper bound.\n * @returns {number} Returns the clamped number.\n * @example\n *\n * _.clamp(-10, -5, 5);\n * // => -5\n *\n * _.clamp(10, -5, 5);\n * // => 5\n */\n function clamp(number, lower, upper) {\n if (upper === undefined) {\n upper = lower;\n lower = undefined;\n }\n if (upper !== undefined) {\n upper = toNumber(upper);\n upper = upper === upper ? upper : 0;\n }\n if (lower !== undefined) {\n lower = toNumber(lower);\n lower = lower === lower ? lower : 0;\n }\n return baseClamp(toNumber(number), lower, upper);\n }\n\n /**\n * Checks if `n` is between `start` and up to, but not including, `end`. If\n * `end` is not specified, it's set to `start` with `start` then set to `0`.\n * If `start` is greater than `end` the params are swapped to support\n * negative ranges.\n *\n * @static\n * @memberOf _\n * @since 3.3.0\n * @category Number\n * @param {number} number The number to check.\n * @param {number} [start=0] The start of the range.\n * @param {number} end The end of the range.\n * @returns {boolean} Returns `true` if `number` is in the range, else `false`.\n * @see _.range, _.rangeRight\n * @example\n *\n * _.inRange(3, 2, 4);\n * // => true\n *\n * _.inRange(4, 8);\n * // => true\n *\n * _.inRange(4, 2);\n * // => false\n *\n * _.inRange(2, 2);\n * // => false\n *\n * _.inRange(1.2, 2);\n * // => true\n *\n * _.inRange(5.2, 4);\n * // => false\n *\n * _.inRange(-3, -2, -6);\n * // => true\n */\n function inRange(number, start, end) {\n start = toFinite(start);\n if (end === undefined) {\n end = start;\n start = 0;\n } else {\n end = toFinite(end);\n }\n number = toNumber(number);\n return baseInRange(number, start, end);\n }\n\n /**\n * Produces a random number between the inclusive `lower` and `upper` bounds.\n * If only one argument is provided a number between `0` and the given number\n * is returned. If `floating` is `true`, or either `lower` or `upper` are\n * floats, a floating-point number is returned instead of an integer.\n *\n * **Note:** JavaScript follows the IEEE-754 standard for resolving\n * floating-point values which can produce unexpected results.\n *\n * @static\n * @memberOf _\n * @since 0.7.0\n * @category Number\n * @param {number} [lower=0] The lower bound.\n * @param {number} [upper=1] The upper bound.\n * @param {boolean} [floating] Specify returning a floating-point number.\n * @returns {number} Returns the random number.\n * @example\n *\n * _.random(0, 5);\n * // => an integer between 0 and 5\n *\n * _.random(5);\n * // => also an integer between 0 and 5\n *\n * _.random(5, true);\n * // => a floating-point number between 0 and 5\n *\n * _.random(1.2, 5.2);\n * // => a floating-point number between 1.2 and 5.2\n */\n function random(lower, upper, floating) {\n if (floating && typeof floating != 'boolean' && isIterateeCall(lower, upper, floating)) {\n upper = floating = undefined;\n }\n if (floating === undefined) {\n if (typeof upper == 'boolean') {\n floating = upper;\n upper = undefined;\n }\n else if (typeof lower == 'boolean') {\n floating = lower;\n lower = undefined;\n }\n }\n if (lower === undefined && upper === undefined) {\n lower = 0;\n upper = 1;\n }\n else {\n lower = toFinite(lower);\n if (upper === undefined) {\n upper = lower;\n lower = 0;\n } else {\n upper = toFinite(upper);\n }\n }\n if (lower > upper) {\n var temp = lower;\n lower = upper;\n upper = temp;\n }\n if (floating || lower % 1 || upper % 1) {\n var rand = nativeRandom();\n return nativeMin(lower + (rand * (upper - lower + freeParseFloat('1e-' + ((rand + '').length - 1)))), upper);\n }\n return baseRandom(lower, upper);\n }\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the camel cased string.\n * @example\n *\n * _.camelCase('Foo Bar');\n * // => 'fooBar'\n *\n * _.camelCase('--foo-bar--');\n * // => 'fooBar'\n *\n * _.camelCase('__FOO_BAR__');\n * // => 'fooBar'\n */\n var camelCase = createCompounder(function(result, word, index) {\n word = word.toLowerCase();\n return result + (index ? capitalize(word) : word);\n });\n\n /**\n * Converts the first character of `string` to upper case and the remaining\n * to lower case.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to capitalize.\n * @returns {string} Returns the capitalized string.\n * @example\n *\n * _.capitalize('FRED');\n * // => 'Fred'\n */\n function capitalize(string) {\n return upperFirst(toString(string).toLowerCase());\n }\n\n /**\n * Deburrs `string` by converting\n * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)\n * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A)\n * letters to basic Latin letters and removing\n * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to deburr.\n * @returns {string} Returns the deburred string.\n * @example\n *\n * _.deburr('déjà vu');\n * // => 'deja vu'\n */\n function deburr(string) {\n string = toString(string);\n return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');\n }\n\n /**\n * Checks if `string` ends with the given target string.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to inspect.\n * @param {string} [target] The string to search for.\n * @param {number} [position=string.length] The position to search up to.\n * @returns {boolean} Returns `true` if `string` ends with `target`,\n * else `false`.\n * @example\n *\n * _.endsWith('abc', 'c');\n * // => true\n *\n * _.endsWith('abc', 'b');\n * // => false\n *\n * _.endsWith('abc', 'b', 2);\n * // => true\n */\n function endsWith(string, target, position) {\n string = toString(string);\n target = baseToString(target);\n\n var length = string.length;\n position = position === undefined\n ? length\n : baseClamp(toInteger(position), 0, length);\n\n var end = position;\n position -= target.length;\n return position >= 0 && string.slice(position, end) == target;\n }\n\n /**\n * Converts the characters \"&\", \"<\", \">\", '\"', and \"'\" in `string` to their\n * corresponding HTML entities.\n *\n * **Note:** No other characters are escaped. To escape additional\n * characters use a third-party library like [_he_](https://mths.be/he).\n *\n * Though the \">\" character is escaped for symmetry, characters like\n * \">\" and \"/\" don't need escaping in HTML and have no special meaning\n * unless they're part of a tag or unquoted attribute value. See\n * [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands)\n * (under \"semi-related fun fact\") for more details.\n *\n * When working with HTML you should always\n * [quote attribute values](http://wonko.com/post/html-escaping) to reduce\n * XSS vectors.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category String\n * @param {string} [string=''] The string to escape.\n * @returns {string} Returns the escaped string.\n * @example\n *\n * _.escape('fred, barney, & pebbles');\n * // => 'fred, barney, & pebbles'\n */\n function escape(string) {\n string = toString(string);\n return (string && reHasUnescapedHtml.test(string))\n ? string.replace(reUnescapedHtml, escapeHtmlChar)\n : string;\n }\n\n /**\n * Escapes the `RegExp` special characters \"^\", \"$\", \"\\\", \".\", \"*\", \"+\",\n * \"?\", \"(\", \")\", \"[\", \"]\", \"{\", \"}\", and \"|\" in `string`.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to escape.\n * @returns {string} Returns the escaped string.\n * @example\n *\n * _.escapeRegExp('[lodash](https://lodash.com/)');\n * // => '\\[lodash\\]\\(https://lodash\\.com/\\)'\n */\n function escapeRegExp(string) {\n string = toString(string);\n return (string && reHasRegExpChar.test(string))\n ? string.replace(reRegExpChar, '\\\\$&')\n : string;\n }\n\n /**\n * Converts `string` to\n * [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the kebab cased string.\n * @example\n *\n * _.kebabCase('Foo Bar');\n * // => 'foo-bar'\n *\n * _.kebabCase('fooBar');\n * // => 'foo-bar'\n *\n * _.kebabCase('__FOO_BAR__');\n * // => 'foo-bar'\n */\n var kebabCase = createCompounder(function(result, word, index) {\n return result + (index ? '-' : '') + word.toLowerCase();\n });\n\n /**\n * Converts `string`, as space separated words, to lower case.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the lower cased string.\n * @example\n *\n * _.lowerCase('--Foo-Bar--');\n * // => 'foo bar'\n *\n * _.lowerCase('fooBar');\n * // => 'foo bar'\n *\n * _.lowerCase('__FOO_BAR__');\n * // => 'foo bar'\n */\n var lowerCase = createCompounder(function(result, word, index) {\n return result + (index ? ' ' : '') + word.toLowerCase();\n });\n\n /**\n * Converts the first character of `string` to lower case.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the converted string.\n * @example\n *\n * _.lowerFirst('Fred');\n * // => 'fred'\n *\n * _.lowerFirst('FRED');\n * // => 'fRED'\n */\n var lowerFirst = createCaseFirst('toLowerCase');\n\n /**\n * Pads `string` on the left and right sides if it's shorter than `length`.\n * Padding characters are truncated if they can't be evenly divided by `length`.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to pad.\n * @param {number} [length=0] The padding length.\n * @param {string} [chars=' '] The string used as padding.\n * @returns {string} Returns the padded string.\n * @example\n *\n * _.pad('abc', 8);\n * // => ' abc '\n *\n * _.pad('abc', 8, '_-');\n * // => '_-abc_-_'\n *\n * _.pad('abc', 3);\n * // => 'abc'\n */\n function pad(string, length, chars) {\n string = toString(string);\n length = toInteger(length);\n\n var strLength = length ? stringSize(string) : 0;\n if (!length || strLength >= length) {\n return string;\n }\n var mid = (length - strLength) / 2;\n return (\n createPadding(nativeFloor(mid), chars) +\n string +\n createPadding(nativeCeil(mid), chars)\n );\n }\n\n /**\n * Pads `string` on the right side if it's shorter than `length`. Padding\n * characters are truncated if they exceed `length`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to pad.\n * @param {number} [length=0] The padding length.\n * @param {string} [chars=' '] The string used as padding.\n * @returns {string} Returns the padded string.\n * @example\n *\n * _.padEnd('abc', 6);\n * // => 'abc '\n *\n * _.padEnd('abc', 6, '_-');\n * // => 'abc_-_'\n *\n * _.padEnd('abc', 3);\n * // => 'abc'\n */\n function padEnd(string, length, chars) {\n string = toString(string);\n length = toInteger(length);\n\n var strLength = length ? stringSize(string) : 0;\n return (length && strLength < length)\n ? (string + createPadding(length - strLength, chars))\n : string;\n }\n\n /**\n * Pads `string` on the left side if it's shorter than `length`. Padding\n * characters are truncated if they exceed `length`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to pad.\n * @param {number} [length=0] The padding length.\n * @param {string} [chars=' '] The string used as padding.\n * @returns {string} Returns the padded string.\n * @example\n *\n * _.padStart('abc', 6);\n * // => ' abc'\n *\n * _.padStart('abc', 6, '_-');\n * // => '_-_abc'\n *\n * _.padStart('abc', 3);\n * // => 'abc'\n */\n function padStart(string, length, chars) {\n string = toString(string);\n length = toInteger(length);\n\n var strLength = length ? stringSize(string) : 0;\n return (length && strLength < length)\n ? (createPadding(length - strLength, chars) + string)\n : string;\n }\n\n /**\n * Converts `string` to an integer of the specified radix. If `radix` is\n * `undefined` or `0`, a `radix` of `10` is used unless `value` is a\n * hexadecimal, in which case a `radix` of `16` is used.\n *\n * **Note:** This method aligns with the\n * [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`.\n *\n * @static\n * @memberOf _\n * @since 1.1.0\n * @category String\n * @param {string} string The string to convert.\n * @param {number} [radix=10] The radix to interpret `value` by.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {number} Returns the converted integer.\n * @example\n *\n * _.parseInt('08');\n * // => 8\n *\n * _.map(['6', '08', '10'], _.parseInt);\n * // => [6, 8, 10]\n */\n function parseInt(string, radix, guard) {\n if (guard || radix == null) {\n radix = 0;\n } else if (radix) {\n radix = +radix;\n }\n return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0);\n }\n\n /**\n * Repeats the given string `n` times.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to repeat.\n * @param {number} [n=1] The number of times to repeat the string.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {string} Returns the repeated string.\n * @example\n *\n * _.repeat('*', 3);\n * // => '***'\n *\n * _.repeat('abc', 2);\n * // => 'abcabc'\n *\n * _.repeat('abc', 0);\n * // => ''\n */\n function repeat(string, n, guard) {\n if ((guard ? isIterateeCall(string, n, guard) : n === undefined)) {\n n = 1;\n } else {\n n = toInteger(n);\n }\n return baseRepeat(toString(string), n);\n }\n\n /**\n * Replaces matches for `pattern` in `string` with `replacement`.\n *\n * **Note:** This method is based on\n * [`String#replace`](https://mdn.io/String/replace).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to modify.\n * @param {RegExp|string} pattern The pattern to replace.\n * @param {Function|string} replacement The match replacement.\n * @returns {string} Returns the modified string.\n * @example\n *\n * _.replace('Hi Fred', 'Fred', 'Barney');\n * // => 'Hi Barney'\n */\n function replace() {\n var args = arguments,\n string = toString(args[0]);\n\n return args.length < 3 ? string : string.replace(args[1], args[2]);\n }\n\n /**\n * Converts `string` to\n * [snake case](https://en.wikipedia.org/wiki/Snake_case).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the snake cased string.\n * @example\n *\n * _.snakeCase('Foo Bar');\n * // => 'foo_bar'\n *\n * _.snakeCase('fooBar');\n * // => 'foo_bar'\n *\n * _.snakeCase('--FOO-BAR--');\n * // => 'foo_bar'\n */\n var snakeCase = createCompounder(function(result, word, index) {\n return result + (index ? '_' : '') + word.toLowerCase();\n });\n\n /**\n * Splits `string` by `separator`.\n *\n * **Note:** This method is based on\n * [`String#split`](https://mdn.io/String/split).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to split.\n * @param {RegExp|string} separator The separator pattern to split by.\n * @param {number} [limit] The length to truncate results to.\n * @returns {Array} Returns the string segments.\n * @example\n *\n * _.split('a-b-c', '-', 2);\n * // => ['a', 'b']\n */\n function split(string, separator, limit) {\n if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) {\n separator = limit = undefined;\n }\n limit = limit === undefined ? MAX_ARRAY_LENGTH : limit >>> 0;\n if (!limit) {\n return [];\n }\n string = toString(string);\n if (string && (\n typeof separator == 'string' ||\n (separator != null && !isRegExp(separator))\n )) {\n separator = baseToString(separator);\n if (!separator && hasUnicode(string)) {\n return castSlice(stringToArray(string), 0, limit);\n }\n }\n return string.split(separator, limit);\n }\n\n /**\n * Converts `string` to\n * [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage).\n *\n * @static\n * @memberOf _\n * @since 3.1.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the start cased string.\n * @example\n *\n * _.startCase('--foo-bar--');\n * // => 'Foo Bar'\n *\n * _.startCase('fooBar');\n * // => 'Foo Bar'\n *\n * _.startCase('__FOO_BAR__');\n * // => 'FOO BAR'\n */\n var startCase = createCompounder(function(result, word, index) {\n return result + (index ? ' ' : '') + upperFirst(word);\n });\n\n /**\n * Checks if `string` starts with the given target string.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to inspect.\n * @param {string} [target] The string to search for.\n * @param {number} [position=0] The position to search from.\n * @returns {boolean} Returns `true` if `string` starts with `target`,\n * else `false`.\n * @example\n *\n * _.startsWith('abc', 'a');\n * // => true\n *\n * _.startsWith('abc', 'b');\n * // => false\n *\n * _.startsWith('abc', 'b', 1);\n * // => true\n */\n function startsWith(string, target, position) {\n string = toString(string);\n position = position == null\n ? 0\n : baseClamp(toInteger(position), 0, string.length);\n\n target = baseToString(target);\n return string.slice(position, position + target.length) == target;\n }\n\n /**\n * Creates a compiled template function that can interpolate data properties\n * in \"interpolate\" delimiters, HTML-escape interpolated data properties in\n * \"escape\" delimiters, and execute JavaScript in \"evaluate\" delimiters. Data\n * properties may be accessed as free variables in the template. If a setting\n * object is given, it takes precedence over `_.templateSettings` values.\n *\n * **Note:** In the development build `_.template` utilizes\n * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)\n * for easier debugging.\n *\n * For more information on precompiling templates see\n * [lodash's custom builds documentation](https://lodash.com/custom-builds).\n *\n * For more information on Chrome extension sandboxes see\n * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval).\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category String\n * @param {string} [string=''] The template string.\n * @param {Object} [options={}] The options object.\n * @param {RegExp} [options.escape=_.templateSettings.escape]\n * The HTML \"escape\" delimiter.\n * @param {RegExp} [options.evaluate=_.templateSettings.evaluate]\n * The \"evaluate\" delimiter.\n * @param {Object} [options.imports=_.templateSettings.imports]\n * An object to import into the template as free variables.\n * @param {RegExp} [options.interpolate=_.templateSettings.interpolate]\n * The \"interpolate\" delimiter.\n * @param {string} [options.sourceURL='lodash.templateSources[n]']\n * The sourceURL of the compiled template.\n * @param {string} [options.variable='obj']\n * The data object variable name.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Function} Returns the compiled template function.\n * @example\n *\n * // Use the \"interpolate\" delimiter to create a compiled template.\n * var compiled = _.template('hello <%= user %>!');\n * compiled({ 'user': 'fred' });\n * // => 'hello fred!'\n *\n * // Use the HTML \"escape\" delimiter to escape data property values.\n * var compiled = _.template('<%- value %>');\n * compiled({ 'value': '