var __defProp = Object.defineProperty;
var __defNormalProp = (obj, key, value) => key in obj ? __defProp(obj, key, { enumerable: true, configurable: true, writable: true, value }) : obj[key] = value;
var __publicField = (obj, key, value) => {
  __defNormalProp(obj, typeof key !== "symbol" ? key + "" : key, value);
  return value;
};
import { c as csvParse, a as airportsString, f as flightsString } from "./flights-airports-9a9e6422.js";
/*!
 * @kurkle/color v0.3.2
 * https://github.com/kurkle/color#readme
 * (c) 2023 Jukka Kurkela
 * Released under the MIT License
 */
function round(v) {
  return v + 0.5 | 0;
}
const lim = (v, l, h) => Math.max(Math.min(v, h), l);
function p2b(v) {
  return lim(round(v * 2.55), 0, 255);
}
function n2b(v) {
  return lim(round(v * 255), 0, 255);
}
function b2n(v) {
  return lim(round(v / 2.55) / 100, 0, 1);
}
function n2p(v) {
  return lim(round(v * 100), 0, 100);
}
const 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 };
const hex = [..."0123456789ABCDEF"];
const h1 = (b) => hex[b & 15];
const h2 = (b) => hex[(b & 240) >> 4] + hex[b & 15];
const eq = (b) => (b & 240) >> 4 === (b & 15);
const isShort = (v) => eq(v.r) && eq(v.g) && eq(v.b) && eq(v.a);
function hexParse(str) {
  var len = str.length;
  var ret;
  if (str[0] === "#") {
    if (len === 4 || len === 5) {
      ret = {
        r: 255 & map$1[str[1]] * 17,
        g: 255 & map$1[str[2]] * 17,
        b: 255 & map$1[str[3]] * 17,
        a: len === 5 ? map$1[str[4]] * 17 : 255
      };
    } else if (len === 7 || len === 9) {
      ret = {
        r: map$1[str[1]] << 4 | map$1[str[2]],
        g: map$1[str[3]] << 4 | map$1[str[4]],
        b: map$1[str[5]] << 4 | map$1[str[6]],
        a: len === 9 ? map$1[str[7]] << 4 | map$1[str[8]] : 255
      };
    }
  }
  return ret;
}
const alpha = (a, f) => a < 255 ? f(a) : "";
function hexString(v) {
  var f = isShort(v) ? h1 : h2;
  return v ? "#" + f(v.r) + f(v.g) + f(v.b) + alpha(v.a, f) : void 0;
}
const HUE_RE = /^(hsla?|hwb|hsv)\(\s*([-+.e\d]+)(?:deg)?[\s,]+([-+.e\d]+)%[\s,]+([-+.e\d]+)%(?:[\s,]+([-+.e\d]+)(%)?)?\s*\)$/;
function hsl2rgbn(h, s, l) {
  const a = s * Math.min(l, 1 - l);
  const f = (n, k = (n + h / 30) % 12) => l - a * Math.max(Math.min(k - 3, 9 - k, 1), -1);
  return [f(0), f(8), f(4)];
}
function hsv2rgbn(h, s, v) {
  const f = (n, k = (n + h / 60) % 6) => v - v * s * Math.max(Math.min(k, 4 - k, 1), 0);
  return [f(5), f(3), f(1)];
}
function hwb2rgbn(h, w, b) {
  const rgb = hsl2rgbn(h, 1, 0.5);
  let i;
  if (w + b > 1) {
    i = 1 / (w + b);
    w *= i;
    b *= i;
  }
  for (i = 0; i < 3; i++) {
    rgb[i] *= 1 - w - b;
    rgb[i] += w;
  }
  return rgb;
}
function hueValue(r, g, b, d, max) {
  if (r === max) {
    return (g - b) / d + (g < b ? 6 : 0);
  }
  if (g === max) {
    return (b - r) / d + 2;
  }
  return (r - g) / d + 4;
}
function rgb2hsl(v) {
  const range = 255;
  const r = v.r / range;
  const g = v.g / range;
  const b = v.b / range;
  const max = Math.max(r, g, b);
  const min = Math.min(r, g, b);
  const l = (max + min) / 2;
  let h, s, d;
  if (max !== min) {
    d = max - min;
    s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
    h = hueValue(r, g, b, d, max);
    h = h * 60 + 0.5;
  }
  return [h | 0, s || 0, l];
}
function calln(f, a, b, c) {
  return (Array.isArray(a) ? f(a[0], a[1], a[2]) : f(a, b, c)).map(n2b);
}
function hsl2rgb(h, s, l) {
  return calln(hsl2rgbn, h, s, l);
}
function hwb2rgb(h, w, b) {
  return calln(hwb2rgbn, h, w, b);
}
function hsv2rgb(h, s, v) {
  return calln(hsv2rgbn, h, s, v);
}
function hue(h) {
  return (h % 360 + 360) % 360;
}
function hueParse(str) {
  const m = HUE_RE.exec(str);
  let a = 255;
  let v;
  if (!m) {
    return;
  }
  if (m[5] !== v) {
    a = m[6] ? p2b(+m[5]) : n2b(+m[5]);
  }
  const h = hue(+m[2]);
  const p1 = +m[3] / 100;
  const p2 = +m[4] / 100;
  if (m[1] === "hwb") {
    v = hwb2rgb(h, p1, p2);
  } else if (m[1] === "hsv") {
    v = hsv2rgb(h, p1, p2);
  } else {
    v = hsl2rgb(h, p1, p2);
  }
  return {
    r: v[0],
    g: v[1],
    b: v[2],
    a
  };
}
function rotate(v, deg) {
  var h = rgb2hsl(v);
  h[0] = hue(h[0] + deg);
  h = hsl2rgb(h);
  v.r = h[0];
  v.g = h[1];
  v.b = h[2];
}
function hslString(v) {
  if (!v) {
    return;
  }
  const a = rgb2hsl(v);
  const h = a[0];
  const s = n2p(a[1]);
  const l = n2p(a[2]);
  return v.a < 255 ? `hsla(${h}, ${s}%, ${l}%, ${b2n(v.a)})` : `hsl(${h}, ${s}%, ${l}%)`;
}
const map$2 = {
  x: "dark",
  Z: "light",
  Y: "re",
  X: "blu",
  W: "gr",
  V: "medium",
  U: "slate",
  A: "ee",
  T: "ol",
  S: "or",
  B: "ra",
  C: "lateg",
  D: "ights",
  R: "in",
  Q: "turquois",
  E: "hi",
  P: "ro",
  O: "al",
  N: "le",
  M: "de",
  L: "yello",
  F: "en",
  K: "ch",
  G: "arks",
  H: "ea",
  I: "ightg",
  J: "wh"
};
const names$1 = {
  OiceXe: "f0f8ff",
  antiquewEte: "faebd7",
  aqua: "ffff",
  aquamarRe: "7fffd4",
  azuY: "f0ffff",
  beige: "f5f5dc",
  bisque: "ffe4c4",
  black: "0",
  blanKedOmond: "ffebcd",
  Xe: "ff",
  XeviTet: "8a2be2",
  bPwn: "a52a2a",
  burlywood: "deb887",
  caMtXe: "5f9ea0",
  KartYuse: "7fff00",
  KocTate: "d2691e",
  cSO: "ff7f50",
  cSnflowerXe: "6495ed",
  cSnsilk: "fff8dc",
  crimson: "dc143c",
  cyan: "ffff",
  xXe: "8b",
  xcyan: "8b8b",
  xgTMnPd: "b8860b",
  xWay: "a9a9a9",
  xgYF: "6400",
  xgYy: "a9a9a9",
  xkhaki: "bdb76b",
  xmagFta: "8b008b",
  xTivegYF: "556b2f",
  xSange: "ff8c00",
  xScEd: "9932cc",
  xYd: "8b0000",
  xsOmon: "e9967a",
  xsHgYF: "8fbc8f",
  xUXe: "483d8b",
  xUWay: "2f4f4f",
  xUgYy: "2f4f4f",
  xQe: "ced1",
  xviTet: "9400d3",
  dAppRk: "ff1493",
  dApskyXe: "bfff",
  dimWay: "696969",
  dimgYy: "696969",
  dodgerXe: "1e90ff",
  fiYbrick: "b22222",
  flSOwEte: "fffaf0",
  foYstWAn: "228b22",
  fuKsia: "ff00ff",
  gaRsbSo: "dcdcdc",
  ghostwEte: "f8f8ff",
  gTd: "ffd700",
  gTMnPd: "daa520",
  Way: "808080",
  gYF: "8000",
  gYFLw: "adff2f",
  gYy: "808080",
  honeyMw: "f0fff0",
  hotpRk: "ff69b4",
  RdianYd: "cd5c5c",
  Rdigo: "4b0082",
  ivSy: "fffff0",
  khaki: "f0e68c",
  lavFMr: "e6e6fa",
  lavFMrXsh: "fff0f5",
  lawngYF: "7cfc00",
  NmoncEffon: "fffacd",
  ZXe: "add8e6",
  ZcSO: "f08080",
  Zcyan: "e0ffff",
  ZgTMnPdLw: "fafad2",
  ZWay: "d3d3d3",
  ZgYF: "90ee90",
  ZgYy: "d3d3d3",
  ZpRk: "ffb6c1",
  ZsOmon: "ffa07a",
  ZsHgYF: "20b2aa",
  ZskyXe: "87cefa",
  ZUWay: "778899",
  ZUgYy: "778899",
  ZstAlXe: "b0c4de",
  ZLw: "ffffe0",
  lime: "ff00",
  limegYF: "32cd32",
  lRF: "faf0e6",
  magFta: "ff00ff",
  maPon: "800000",
  VaquamarRe: "66cdaa",
  VXe: "cd",
  VScEd: "ba55d3",
  VpurpN: "9370db",
  VsHgYF: "3cb371",
  VUXe: "7b68ee",
  VsprRggYF: "fa9a",
  VQe: "48d1cc",
  VviTetYd: "c71585",
  midnightXe: "191970",
  mRtcYam: "f5fffa",
  mistyPse: "ffe4e1",
  moccasR: "ffe4b5",
  navajowEte: "ffdead",
  navy: "80",
  Tdlace: "fdf5e6",
  Tive: "808000",
  TivedBb: "6b8e23",
  Sange: "ffa500",
  SangeYd: "ff4500",
  ScEd: "da70d6",
  pOegTMnPd: "eee8aa",
  pOegYF: "98fb98",
  pOeQe: "afeeee",
  pOeviTetYd: "db7093",
  papayawEp: "ffefd5",
  pHKpuff: "ffdab9",
  peru: "cd853f",
  pRk: "ffc0cb",
  plum: "dda0dd",
  powMrXe: "b0e0e6",
  purpN: "800080",
  YbeccapurpN: "663399",
  Yd: "ff0000",
  Psybrown: "bc8f8f",
  PyOXe: "4169e1",
  saddNbPwn: "8b4513",
  sOmon: "fa8072",
  sandybPwn: "f4a460",
  sHgYF: "2e8b57",
  sHshell: "fff5ee",
  siFna: "a0522d",
  silver: "c0c0c0",
  skyXe: "87ceeb",
  UXe: "6a5acd",
  UWay: "708090",
  UgYy: "708090",
  snow: "fffafa",
  sprRggYF: "ff7f",
  stAlXe: "4682b4",
  tan: "d2b48c",
  teO: "8080",
  tEstN: "d8bfd8",
  tomato: "ff6347",
  Qe: "40e0d0",
  viTet: "ee82ee",
  JHt: "f5deb3",
  wEte: "ffffff",
  wEtesmoke: "f5f5f5",
  Lw: "ffff00",
  LwgYF: "9acd32"
};
function unpack() {
  const unpacked = {};
  const keys = Object.keys(names$1);
  const tkeys = Object.keys(map$2);
  let i, j, k, ok, nk;
  for (i = 0; i < keys.length; i++) {
    ok = nk = keys[i];
    for (j = 0; j < tkeys.length; j++) {
      k = tkeys[j];
      nk = nk.replace(k, map$2[k]);
    }
    k = parseInt(names$1[ok], 16);
    unpacked[nk] = [k >> 16 & 255, k >> 8 & 255, k & 255];
  }
  return unpacked;
}
let names;
function nameParse(str) {
  if (!names) {
    names = unpack();
    names.transparent = [0, 0, 0, 0];
  }
  const a = names[str.toLowerCase()];
  return a && {
    r: a[0],
    g: a[1],
    b: a[2],
    a: a.length === 4 ? a[3] : 255
  };
}
const RGB_RE = /^rgba?\(\s*([-+.\d]+)(%)?[\s,]+([-+.e\d]+)(%)?[\s,]+([-+.e\d]+)(%)?(?:[\s,/]+([-+.e\d]+)(%)?)?\s*\)$/;
function rgbParse(str) {
  const m = RGB_RE.exec(str);
  let a = 255;
  let r, g, b;
  if (!m) {
    return;
  }
  if (m[7] !== r) {
    const v = +m[7];
    a = m[8] ? p2b(v) : lim(v * 255, 0, 255);
  }
  r = +m[1];
  g = +m[3];
  b = +m[5];
  r = 255 & (m[2] ? p2b(r) : lim(r, 0, 255));
  g = 255 & (m[4] ? p2b(g) : lim(g, 0, 255));
  b = 255 & (m[6] ? p2b(b) : lim(b, 0, 255));
  return {
    r,
    g,
    b,
    a
  };
}
function rgbString(v) {
  return v && (v.a < 255 ? `rgba(${v.r}, ${v.g}, ${v.b}, ${b2n(v.a)})` : `rgb(${v.r}, ${v.g}, ${v.b})`);
}
const to = (v) => v <= 31308e-7 ? v * 12.92 : Math.pow(v, 1 / 2.4) * 1.055 - 0.055;
const from = (v) => v <= 0.04045 ? v / 12.92 : Math.pow((v + 0.055) / 1.055, 2.4);
function interpolate$1(rgb1, rgb2, t) {
  const r = from(b2n(rgb1.r));
  const g = from(b2n(rgb1.g));
  const b = from(b2n(rgb1.b));
  return {
    r: n2b(to(r + t * (from(b2n(rgb2.r)) - r))),
    g: n2b(to(g + t * (from(b2n(rgb2.g)) - g))),
    b: n2b(to(b + t * (from(b2n(rgb2.b)) - b))),
    a: rgb1.a + t * (rgb2.a - rgb1.a)
  };
}
function modHSL(v, i, ratio) {
  if (v) {
    let tmp = rgb2hsl(v);
    tmp[i] = Math.max(0, Math.min(tmp[i] + tmp[i] * ratio, i === 0 ? 360 : 1));
    tmp = hsl2rgb(tmp);
    v.r = tmp[0];
    v.g = tmp[1];
    v.b = tmp[2];
  }
}
function clone$1(v, proto) {
  return v ? Object.assign(proto || {}, v) : v;
}
function fromObject(input) {
  var v = { r: 0, g: 0, b: 0, a: 255 };
  if (Array.isArray(input)) {
    if (input.length >= 3) {
      v = { r: input[0], g: input[1], b: input[2], a: 255 };
      if (input.length > 3) {
        v.a = n2b(input[3]);
      }
    }
  } else {
    v = clone$1(input, { r: 0, g: 0, b: 0, a: 1 });
    v.a = n2b(v.a);
  }
  return v;
}
function functionParse(str) {
  if (str.charAt(0) === "r") {
    return rgbParse(str);
  }
  return hueParse(str);
}
class Color {
  constructor(input) {
    if (input instanceof Color) {
      return input;
    }
    const type = typeof input;
    let v;
    if (type === "object") {
      v = fromObject(input);
    } else if (type === "string") {
      v = hexParse(input) || nameParse(input) || functionParse(input);
    }
    this._rgb = v;
    this._valid = !!v;
  }
  get valid() {
    return this._valid;
  }
  get rgb() {
    var v = clone$1(this._rgb);
    if (v) {
      v.a = b2n(v.a);
    }
    return v;
  }
  set rgb(obj) {
    this._rgb = fromObject(obj);
  }
  rgbString() {
    return this._valid ? rgbString(this._rgb) : void 0;
  }
  hexString() {
    return this._valid ? hexString(this._rgb) : void 0;
  }
  hslString() {
    return this._valid ? hslString(this._rgb) : void 0;
  }
  mix(color2, weight) {
    if (color2) {
      const c1 = this.rgb;
      const c2 = color2.rgb;
      let w2;
      const p = weight === w2 ? 0.5 : weight;
      const w = 2 * p - 1;
      const a = c1.a - c2.a;
      const w1 = ((w * a === -1 ? w : (w + a) / (1 + w * a)) + 1) / 2;
      w2 = 1 - w1;
      c1.r = 255 & w1 * c1.r + w2 * c2.r + 0.5;
      c1.g = 255 & w1 * c1.g + w2 * c2.g + 0.5;
      c1.b = 255 & w1 * c1.b + w2 * c2.b + 0.5;
      c1.a = p * c1.a + (1 - p) * c2.a;
      this.rgb = c1;
    }
    return this;
  }
  interpolate(color2, t) {
    if (color2) {
      this._rgb = interpolate$1(this._rgb, color2._rgb, t);
    }
    return this;
  }
  clone() {
    return new Color(this.rgb);
  }
  alpha(a) {
    this._rgb.a = n2b(a);
    return this;
  }
  clearer(ratio) {
    const rgb = this._rgb;
    rgb.a *= 1 - ratio;
    return this;
  }
  greyscale() {
    const rgb = this._rgb;
    const val = round(rgb.r * 0.3 + rgb.g * 0.59 + rgb.b * 0.11);
    rgb.r = rgb.g = rgb.b = val;
    return this;
  }
  opaquer(ratio) {
    const rgb = this._rgb;
    rgb.a *= 1 + ratio;
    return this;
  }
  negate() {
    const v = this._rgb;
    v.r = 255 - v.r;
    v.g = 255 - v.g;
    v.b = 255 - v.b;
    return this;
  }
  lighten(ratio) {
    modHSL(this._rgb, 2, ratio);
    return this;
  }
  darken(ratio) {
    modHSL(this._rgb, 2, -ratio);
    return this;
  }
  saturate(ratio) {
    modHSL(this._rgb, 1, ratio);
    return this;
  }
  desaturate(ratio) {
    modHSL(this._rgb, 1, -ratio);
    return this;
  }
  rotate(deg) {
    rotate(this._rgb, deg);
    return this;
  }
}
/*!
 * Chart.js v4.2.1
 * https://www.chartjs.org
 * (c) 2023 Chart.js Contributors
 * Released under the MIT License
 */
function noop() {
}
const uid = (() => {
  let id = 0;
  return () => id++;
})();
function isNullOrUndef(value) {
  return value === null || typeof value === "undefined";
}
function isArray(value) {
  if (Array.isArray && Array.isArray(value)) {
    return true;
  }
  const type = Object.prototype.toString.call(value);
  if (type.slice(0, 7) === "[object" && type.slice(-6) === "Array]") {
    return true;
  }
  return false;
}
function isObject(value) {
  return value !== null && Object.prototype.toString.call(value) === "[object Object]";
}
function isNumberFinite(value) {
  return (typeof value === "number" || value instanceof Number) && isFinite(+value);
}
function finiteOrDefault(value, defaultValue) {
  return isNumberFinite(value) ? value : defaultValue;
}
function valueOrDefault(value, defaultValue) {
  return typeof value === "undefined" ? defaultValue : value;
}
const toPercentage = (value, dimension) => typeof value === "string" && value.endsWith("%") ? parseFloat(value) / 100 : +value / dimension;
const toDimension = (value, dimension) => typeof value === "string" && value.endsWith("%") ? parseFloat(value) / 100 * dimension : +value;
function callback(fn, args, thisArg) {
  if (fn && typeof fn.call === "function") {
    return fn.apply(thisArg, args);
  }
}
function each(loopable, fn, thisArg, reverse) {
  let i, len, keys;
  if (isArray(loopable)) {
    len = loopable.length;
    if (reverse) {
      for (i = len - 1; i >= 0; i--) {
        fn.call(thisArg, loopable[i], i);
      }
    } else {
      for (i = 0; i < len; i++) {
        fn.call(thisArg, loopable[i], i);
      }
    }
  } else if (isObject(loopable)) {
    keys = Object.keys(loopable);
    len = keys.length;
    for (i = 0; i < len; i++) {
      fn.call(thisArg, loopable[keys[i]], keys[i]);
    }
  }
}
function _elementsEqual(a0, a1) {
  let i, ilen, v0, v1;
  if (!a0 || !a1 || a0.length !== a1.length) {
    return false;
  }
  for (i = 0, ilen = a0.length; i < ilen; ++i) {
    v0 = a0[i];
    v1 = a1[i];
    if (v0.datasetIndex !== v1.datasetIndex || v0.index !== v1.index) {
      return false;
    }
  }
  return true;
}
function clone(source) {
  if (isArray(source)) {
    return source.map(clone);
  }
  if (isObject(source)) {
    const target = /* @__PURE__ */ Object.create(null);
    const keys = Object.keys(source);
    const klen = keys.length;
    let k = 0;
    for (; k < klen; ++k) {
      target[keys[k]] = clone(source[keys[k]]);
    }
    return target;
  }
  return source;
}
function isValidKey(key) {
  return [
    "__proto__",
    "prototype",
    "constructor"
  ].indexOf(key) === -1;
}
function _merger(key, target, source, options) {
  if (!isValidKey(key)) {
    return;
  }
  const tval = target[key];
  const sval = source[key];
  if (isObject(tval) && isObject(sval)) {
    merge(tval, sval, options);
  } else {
    target[key] = clone(sval);
  }
}
function merge(target, source, options) {
  const sources = isArray(source) ? source : [
    source
  ];
  const ilen = sources.length;
  if (!isObject(target)) {
    return target;
  }
  options = options || {};
  const merger = options.merger || _merger;
  let current;
  for (let i = 0; i < ilen; ++i) {
    current = sources[i];
    if (!isObject(current)) {
      continue;
    }
    const keys = Object.keys(current);
    for (let k = 0, klen = keys.length; k < klen; ++k) {
      merger(keys[k], target, current, options);
    }
  }
  return target;
}
function mergeIf(target, source) {
  return merge(target, source, {
    merger: _mergerIf
  });
}
function _mergerIf(key, target, source) {
  if (!isValidKey(key)) {
    return;
  }
  const tval = target[key];
  const sval = source[key];
  if (isObject(tval) && isObject(sval)) {
    mergeIf(tval, sval);
  } else if (!Object.prototype.hasOwnProperty.call(target, key)) {
    target[key] = clone(sval);
  }
}
const keyResolvers = {
  // Chart.helpers.core resolveObjectKey should resolve empty key to root object
  "": (v) => v,
  // default resolvers
  x: (o) => o.x,
  y: (o) => o.y
};
function _splitKey(key) {
  const parts = key.split(".");
  const keys = [];
  let tmp = "";
  for (const part of parts) {
    tmp += part;
    if (tmp.endsWith("\\")) {
      tmp = tmp.slice(0, -1) + ".";
    } else {
      keys.push(tmp);
      tmp = "";
    }
  }
  return keys;
}
function _getKeyResolver(key) {
  const keys = _splitKey(key);
  return (obj) => {
    for (const k of keys) {
      if (k === "") {
        break;
      }
      obj = obj && obj[k];
    }
    return obj;
  };
}
function resolveObjectKey(obj, key) {
  const resolver = keyResolvers[key] || (keyResolvers[key] = _getKeyResolver(key));
  return resolver(obj);
}
function _capitalize(str) {
  return str.charAt(0).toUpperCase() + str.slice(1);
}
const defined = (value) => typeof value !== "undefined";
const isFunction = (value) => typeof value === "function";
const setsEqual = (a, b) => {
  if (a.size !== b.size) {
    return false;
  }
  for (const item of a) {
    if (!b.has(item)) {
      return false;
    }
  }
  return true;
};
function _isClickEvent(e) {
  return e.type === "mouseup" || e.type === "click" || e.type === "contextmenu";
}
const PI = Math.PI;
const TAU = 2 * PI;
const PITAU = TAU + PI;
const INFINITY = Number.POSITIVE_INFINITY;
const RAD_PER_DEG = PI / 180;
const HALF_PI = PI / 2;
const QUARTER_PI = PI / 4;
const TWO_THIRDS_PI = PI * 2 / 3;
const log10 = Math.log10;
const sign = Math.sign;
function almostEquals(x, y, epsilon) {
  return Math.abs(x - y) < epsilon;
}
function niceNum(range) {
  const roundedRange = Math.round(range);
  range = almostEquals(range, roundedRange, range / 1e3) ? roundedRange : range;
  const niceRange = Math.pow(10, Math.floor(log10(range)));
  const fraction = range / niceRange;
  const niceFraction = fraction <= 1 ? 1 : fraction <= 2 ? 2 : fraction <= 5 ? 5 : 10;
  return niceFraction * niceRange;
}
function _factorize(value) {
  const result = [];
  const sqrt = Math.sqrt(value);
  let i;
  for (i = 1; i < sqrt; i++) {
    if (value % i === 0) {
      result.push(i);
      result.push(value / i);
    }
  }
  if (sqrt === (sqrt | 0)) {
    result.push(sqrt);
  }
  result.sort((a, b) => a - b).pop();
  return result;
}
function isNumber(n) {
  return !isNaN(parseFloat(n)) && isFinite(n);
}
function almostWhole(x, epsilon) {
  const rounded = Math.round(x);
  return rounded - epsilon <= x && rounded + epsilon >= x;
}
function _setMinAndMaxByKey(array, target, property) {
  let i, ilen, value;
  for (i = 0, ilen = array.length; i < ilen; i++) {
    value = array[i][property];
    if (!isNaN(value)) {
      target.min = Math.min(target.min, value);
      target.max = Math.max(target.max, value);
    }
  }
}
function toRadians(degrees) {
  return degrees * (PI / 180);
}
function toDegrees(radians) {
  return radians * (180 / PI);
}
function _decimalPlaces(x) {
  if (!isNumberFinite(x)) {
    return;
  }
  let e = 1;
  let p = 0;
  while (Math.round(x * e) / e !== x) {
    e *= 10;
    p++;
  }
  return p;
}
function getAngleFromPoint(centrePoint, anglePoint) {
  const distanceFromXCenter = anglePoint.x - centrePoint.x;
  const distanceFromYCenter = anglePoint.y - centrePoint.y;
  const radialDistanceFromCenter = Math.sqrt(distanceFromXCenter * distanceFromXCenter + distanceFromYCenter * distanceFromYCenter);
  let angle = Math.atan2(distanceFromYCenter, distanceFromXCenter);
  if (angle < -0.5 * PI) {
    angle += TAU;
  }
  return {
    angle,
    distance: radialDistanceFromCenter
  };
}
function distanceBetweenPoints(pt1, pt2) {
  return Math.sqrt(Math.pow(pt2.x - pt1.x, 2) + Math.pow(pt2.y - pt1.y, 2));
}
function _angleDiff(a, b) {
  return (a - b + PITAU) % TAU - PI;
}
function _normalizeAngle(a) {
  return (a % TAU + TAU) % TAU;
}
function _angleBetween(angle, start, end, sameAngleIsFullCircle) {
  const a = _normalizeAngle(angle);
  const s = _normalizeAngle(start);
  const e = _normalizeAngle(end);
  const angleToStart = _normalizeAngle(s - a);
  const angleToEnd = _normalizeAngle(e - a);
  const startToAngle = _normalizeAngle(a - s);
  const endToAngle = _normalizeAngle(a - e);
  return a === s || a === e || sameAngleIsFullCircle && s === e || angleToStart > angleToEnd && startToAngle < endToAngle;
}
function _limitValue(value, min, max) {
  return Math.max(min, Math.min(max, value));
}
function _int16Range(value) {
  return _limitValue(value, -32768, 32767);
}
function _isBetween(value, start, end, epsilon = 1e-6) {
  return value >= Math.min(start, end) - epsilon && value <= Math.max(start, end) + epsilon;
}
function _lookup(table, value, cmp) {
  cmp = cmp || ((index2) => table[index2] < value);
  let hi = table.length - 1;
  let lo = 0;
  let mid;
  while (hi - lo > 1) {
    mid = lo + hi >> 1;
    if (cmp(mid)) {
      lo = mid;
    } else {
      hi = mid;
    }
  }
  return {
    lo,
    hi
  };
}
const _lookupByKey = (table, key, value, last) => _lookup(table, value, last ? (index2) => {
  const ti = table[index2][key];
  return ti < value || ti === value && table[index2 + 1][key] === value;
} : (index2) => table[index2][key] < value);
const _rlookupByKey = (table, key, value) => _lookup(table, value, (index2) => table[index2][key] >= value);
function _filterBetween(values, min, max) {
  let start = 0;
  let end = values.length;
  while (start < end && values[start] < min) {
    start++;
  }
  while (end > start && values[end - 1] > max) {
    end--;
  }
  return start > 0 || end < values.length ? values.slice(start, end) : values;
}
const arrayEvents = [
  "push",
  "pop",
  "shift",
  "splice",
  "unshift"
];
function listenArrayEvents(array, listener) {
  if (array._chartjs) {
    array._chartjs.listeners.push(listener);
    return;
  }
  Object.defineProperty(array, "_chartjs", {
    configurable: true,
    enumerable: false,
    value: {
      listeners: [
        listener
      ]
    }
  });
  arrayEvents.forEach((key) => {
    const method = "_onData" + _capitalize(key);
    const base = array[key];
    Object.defineProperty(array, key, {
      configurable: true,
      enumerable: false,
      value(...args) {
        const res = base.apply(this, args);
        array._chartjs.listeners.forEach((object) => {
          if (typeof object[method] === "function") {
            object[method](...args);
          }
        });
        return res;
      }
    });
  });
}
function unlistenArrayEvents(array, listener) {
  const stub = array._chartjs;
  if (!stub) {
    return;
  }
  const listeners = stub.listeners;
  const index2 = listeners.indexOf(listener);
  if (index2 !== -1) {
    listeners.splice(index2, 1);
  }
  if (listeners.length > 0) {
    return;
  }
  arrayEvents.forEach((key) => {
    delete array[key];
  });
  delete array._chartjs;
}
function _arrayUnique(items) {
  const set2 = /* @__PURE__ */ new Set();
  let i, ilen;
  for (i = 0, ilen = items.length; i < ilen; ++i) {
    set2.add(items[i]);
  }
  if (set2.size === ilen) {
    return items;
  }
  return Array.from(set2);
}
const requestAnimFrame = function() {
  if (typeof window === "undefined") {
    return function(callback2) {
      return callback2();
    };
  }
  return window.requestAnimationFrame;
}();
function throttled(fn, thisArg) {
  let argsToUse = [];
  let ticking = false;
  return function(...args) {
    argsToUse = args;
    if (!ticking) {
      ticking = true;
      requestAnimFrame.call(window, () => {
        ticking = false;
        fn.apply(thisArg, argsToUse);
      });
    }
  };
}
function debounce(fn, delay) {
  let timeout;
  return function(...args) {
    if (delay) {
      clearTimeout(timeout);
      timeout = setTimeout(fn, delay, args);
    } else {
      fn.apply(this, args);
    }
    return delay;
  };
}
const _toLeftRightCenter = (align) => align === "start" ? "left" : align === "end" ? "right" : "center";
const _alignStartEnd = (align, start, end) => align === "start" ? start : align === "end" ? end : (start + end) / 2;
const _textX = (align, left, right, rtl) => {
  const check = rtl ? "left" : "right";
  return align === check ? right : align === "center" ? (left + right) / 2 : left;
};
function _getStartAndCountOfVisiblePoints(meta, points, animationsDisabled) {
  const pointCount = points.length;
  let start = 0;
  let count = pointCount;
  if (meta._sorted) {
    const { iScale, _parsed } = meta;
    const axis = iScale.axis;
    const { min, max, minDefined, maxDefined } = iScale.getUserBounds();
    if (minDefined) {
      start = _limitValue(Math.min(
        // @ts-expect-error Need to type _parsed
        _lookupByKey(_parsed, iScale.axis, min).lo,
        // @ts-expect-error Need to fix types on _lookupByKey
        animationsDisabled ? pointCount : _lookupByKey(points, axis, iScale.getPixelForValue(min)).lo
      ), 0, pointCount - 1);
    }
    if (maxDefined) {
      count = _limitValue(Math.max(
        // @ts-expect-error Need to type _parsed
        _lookupByKey(_parsed, iScale.axis, max, true).hi + 1,
        // @ts-expect-error Need to fix types on _lookupByKey
        animationsDisabled ? 0 : _lookupByKey(points, axis, iScale.getPixelForValue(max), true).hi + 1
      ), start, pointCount) - start;
    } else {
      count = pointCount - start;
    }
  }
  return {
    start,
    count
  };
}
function _scaleRangesChanged(meta) {
  const { xScale, yScale, _scaleRanges } = meta;
  const newRanges = {
    xmin: xScale.min,
    xmax: xScale.max,
    ymin: yScale.min,
    ymax: yScale.max
  };
  if (!_scaleRanges) {
    meta._scaleRanges = newRanges;
    return true;
  }
  const changed = _scaleRanges.xmin !== xScale.min || _scaleRanges.xmax !== xScale.max || _scaleRanges.ymin !== yScale.min || _scaleRanges.ymax !== yScale.max;
  Object.assign(_scaleRanges, newRanges);
  return changed;
}
const atEdge = (t) => t === 0 || t === 1;
const elasticIn = (t, s, p) => -(Math.pow(2, 10 * (t -= 1)) * Math.sin((t - s) * TAU / p));
const elasticOut = (t, s, p) => Math.pow(2, -10 * t) * Math.sin((t - s) * TAU / p) + 1;
const effects = {
  linear: (t) => t,
  easeInQuad: (t) => t * t,
  easeOutQuad: (t) => -t * (t - 2),
  easeInOutQuad: (t) => (t /= 0.5) < 1 ? 0.5 * t * t : -0.5 * (--t * (t - 2) - 1),
  easeInCubic: (t) => t * t * t,
  easeOutCubic: (t) => (t -= 1) * t * t + 1,
  easeInOutCubic: (t) => (t /= 0.5) < 1 ? 0.5 * t * t * t : 0.5 * ((t -= 2) * t * t + 2),
  easeInQuart: (t) => t * t * t * t,
  easeOutQuart: (t) => -((t -= 1) * t * t * t - 1),
  easeInOutQuart: (t) => (t /= 0.5) < 1 ? 0.5 * t * t * t * t : -0.5 * ((t -= 2) * t * t * t - 2),
  easeInQuint: (t) => t * t * t * t * t,
  easeOutQuint: (t) => (t -= 1) * t * t * t * t + 1,
  easeInOutQuint: (t) => (t /= 0.5) < 1 ? 0.5 * t * t * t * t * t : 0.5 * ((t -= 2) * t * t * t * t + 2),
  easeInSine: (t) => -Math.cos(t * HALF_PI) + 1,
  easeOutSine: (t) => Math.sin(t * HALF_PI),
  easeInOutSine: (t) => -0.5 * (Math.cos(PI * t) - 1),
  easeInExpo: (t) => t === 0 ? 0 : Math.pow(2, 10 * (t - 1)),
  easeOutExpo: (t) => t === 1 ? 1 : -Math.pow(2, -10 * t) + 1,
  easeInOutExpo: (t) => atEdge(t) ? t : t < 0.5 ? 0.5 * Math.pow(2, 10 * (t * 2 - 1)) : 0.5 * (-Math.pow(2, -10 * (t * 2 - 1)) + 2),
  easeInCirc: (t) => t >= 1 ? t : -(Math.sqrt(1 - t * t) - 1),
  easeOutCirc: (t) => Math.sqrt(1 - (t -= 1) * t),
  easeInOutCirc: (t) => (t /= 0.5) < 1 ? -0.5 * (Math.sqrt(1 - t * t) - 1) : 0.5 * (Math.sqrt(1 - (t -= 2) * t) + 1),
  easeInElastic: (t) => atEdge(t) ? t : elasticIn(t, 0.075, 0.3),
  easeOutElastic: (t) => atEdge(t) ? t : elasticOut(t, 0.075, 0.3),
  easeInOutElastic(t) {
    const s = 0.1125;
    const p = 0.45;
    return atEdge(t) ? t : t < 0.5 ? 0.5 * elasticIn(t * 2, s, p) : 0.5 + 0.5 * elasticOut(t * 2 - 1, s, p);
  },
  easeInBack(t) {
    const s = 1.70158;
    return t * t * ((s + 1) * t - s);
  },
  easeOutBack(t) {
    const s = 1.70158;
    return (t -= 1) * t * ((s + 1) * t + s) + 1;
  },
  easeInOutBack(t) {
    let s = 1.70158;
    if ((t /= 0.5) < 1) {
      return 0.5 * (t * t * (((s *= 1.525) + 1) * t - s));
    }
    return 0.5 * ((t -= 2) * t * (((s *= 1.525) + 1) * t + s) + 2);
  },
  easeInBounce: (t) => 1 - effects.easeOutBounce(1 - t),
  easeOutBounce(t) {
    const m = 7.5625;
    const d = 2.75;
    if (t < 1 / d) {
      return m * t * t;
    }
    if (t < 2 / d) {
      return m * (t -= 1.5 / d) * t + 0.75;
    }
    if (t < 2.5 / d) {
      return m * (t -= 2.25 / d) * t + 0.9375;
    }
    return m * (t -= 2.625 / d) * t + 0.984375;
  },
  easeInOutBounce: (t) => t < 0.5 ? effects.easeInBounce(t * 2) * 0.5 : effects.easeOutBounce(t * 2 - 1) * 0.5 + 0.5
};
function isPatternOrGradient(value) {
  if (value && typeof value === "object") {
    const type = value.toString();
    return type === "[object CanvasPattern]" || type === "[object CanvasGradient]";
  }
  return false;
}
function color(value) {
  return isPatternOrGradient(value) ? value : new Color(value);
}
function getHoverColor(value) {
  return isPatternOrGradient(value) ? value : new Color(value).saturate(0.5).darken(0.1).hexString();
}
const numbers = [
  "x",
  "y",
  "borderWidth",
  "radius",
  "tension"
];
const colors = [
  "color",
  "borderColor",
  "backgroundColor"
];
function applyAnimationsDefaults(defaults2) {
  defaults2.set("animation", {
    delay: void 0,
    duration: 1e3,
    easing: "easeOutQuart",
    fn: void 0,
    from: void 0,
    loop: void 0,
    to: void 0,
    type: void 0
  });
  defaults2.describe("animation", {
    _fallback: false,
    _indexable: false,
    _scriptable: (name2) => name2 !== "onProgress" && name2 !== "onComplete" && name2 !== "fn"
  });
  defaults2.set("animations", {
    colors: {
      type: "color",
      properties: colors
    },
    numbers: {
      type: "number",
      properties: numbers
    }
  });
  defaults2.describe("animations", {
    _fallback: "animation"
  });
  defaults2.set("transitions", {
    active: {
      animation: {
        duration: 400
      }
    },
    resize: {
      animation: {
        duration: 0
      }
    },
    show: {
      animations: {
        colors: {
          from: "transparent"
        },
        visible: {
          type: "boolean",
          duration: 0
        }
      }
    },
    hide: {
      animations: {
        colors: {
          to: "transparent"
        },
        visible: {
          type: "boolean",
          easing: "linear",
          fn: (v) => v | 0
        }
      }
    }
  });
}
function applyLayoutsDefaults(defaults2) {
  defaults2.set("layout", {
    autoPadding: true,
    padding: {
      top: 0,
      right: 0,
      bottom: 0,
      left: 0
    }
  });
}
const intlCache = /* @__PURE__ */ new Map();
function getNumberFormat(locale, options) {
  options = options || {};
  const cacheKey = locale + JSON.stringify(options);
  let formatter = intlCache.get(cacheKey);
  if (!formatter) {
    formatter = new Intl.NumberFormat(locale, options);
    intlCache.set(cacheKey, formatter);
  }
  return formatter;
}
function formatNumber(num, locale, options) {
  return getNumberFormat(locale, options).format(num);
}
const formatters = {
  values(value) {
    return isArray(value) ? value : "" + value;
  },
  numeric(tickValue, index2, ticks) {
    if (tickValue === 0) {
      return "0";
    }
    const locale = this.chart.options.locale;
    let notation;
    let delta = tickValue;
    if (ticks.length > 1) {
      const maxTick = Math.max(Math.abs(ticks[0].value), Math.abs(ticks[ticks.length - 1].value));
      if (maxTick < 1e-4 || maxTick > 1e15) {
        notation = "scientific";
      }
      delta = calculateDelta(tickValue, ticks);
    }
    const logDelta = log10(Math.abs(delta));
    const numDecimal = Math.max(Math.min(-1 * Math.floor(logDelta), 20), 0);
    const options = {
      notation,
      minimumFractionDigits: numDecimal,
      maximumFractionDigits: numDecimal
    };
    Object.assign(options, this.options.ticks.format);
    return formatNumber(tickValue, locale, options);
  },
  logarithmic(tickValue, index2, ticks) {
    if (tickValue === 0) {
      return "0";
    }
    const remain = ticks[index2].significand || tickValue / Math.pow(10, Math.floor(log10(tickValue)));
    if ([
      1,
      2,
      3,
      5,
      10,
      15
    ].includes(remain) || index2 > 0.8 * ticks.length) {
      return formatters.numeric.call(this, tickValue, index2, ticks);
    }
    return "";
  }
};
function calculateDelta(tickValue, ticks) {
  let delta = ticks.length > 3 ? ticks[2].value - ticks[1].value : ticks[1].value - ticks[0].value;
  if (Math.abs(delta) >= 1 && tickValue !== Math.floor(tickValue)) {
    delta = tickValue - Math.floor(tickValue);
  }
  return delta;
}
var Ticks = {
  formatters
};
function applyScaleDefaults(defaults2) {
  defaults2.set("scale", {
    display: true,
    offset: false,
    reverse: false,
    beginAtZero: false,
    bounds: "ticks",
    grace: 0,
    grid: {
      display: true,
      lineWidth: 1,
      drawOnChartArea: true,
      drawTicks: true,
      tickLength: 8,
      tickWidth: (_ctx, options) => options.lineWidth,
      tickColor: (_ctx, options) => options.color,
      offset: false
    },
    border: {
      display: true,
      dash: [],
      dashOffset: 0,
      width: 1
    },
    title: {
      display: false,
      text: "",
      padding: {
        top: 4,
        bottom: 4
      }
    },
    ticks: {
      minRotation: 0,
      maxRotation: 50,
      mirror: false,
      textStrokeWidth: 0,
      textStrokeColor: "",
      padding: 3,
      display: true,
      autoSkip: true,
      autoSkipPadding: 3,
      labelOffset: 0,
      callback: Ticks.formatters.values,
      minor: {},
      major: {},
      align: "center",
      crossAlign: "near",
      showLabelBackdrop: false,
      backdropColor: "rgba(255, 255, 255, 0.75)",
      backdropPadding: 2
    }
  });
  defaults2.route("scale.ticks", "color", "", "color");
  defaults2.route("scale.grid", "color", "", "borderColor");
  defaults2.route("scale.border", "color", "", "borderColor");
  defaults2.route("scale.title", "color", "", "color");
  defaults2.describe("scale", {
    _fallback: false,
    _scriptable: (name2) => !name2.startsWith("before") && !name2.startsWith("after") && name2 !== "callback" && name2 !== "parser",
    _indexable: (name2) => name2 !== "borderDash" && name2 !== "tickBorderDash" && name2 !== "dash"
  });
  defaults2.describe("scales", {
    _fallback: "scale"
  });
  defaults2.describe("scale.ticks", {
    _scriptable: (name2) => name2 !== "backdropPadding" && name2 !== "callback",
    _indexable: (name2) => name2 !== "backdropPadding"
  });
}
const overrides = /* @__PURE__ */ Object.create(null);
const descriptors = /* @__PURE__ */ Object.create(null);
function getScope$1(node, key) {
  if (!key) {
    return node;
  }
  const keys = key.split(".");
  for (let i = 0, n = keys.length; i < n; ++i) {
    const k = keys[i];
    node = node[k] || (node[k] = /* @__PURE__ */ Object.create(null));
  }
  return node;
}
function set(root, scope, values) {
  if (typeof scope === "string") {
    return merge(getScope$1(root, scope), values);
  }
  return merge(getScope$1(root, ""), scope);
}
class Defaults {
  constructor(_descriptors2, _appliers) {
    this.animation = void 0;
    this.backgroundColor = "rgba(0,0,0,0.1)";
    this.borderColor = "rgba(0,0,0,0.1)";
    this.color = "#666";
    this.datasets = {};
    this.devicePixelRatio = (context) => context.chart.platform.getDevicePixelRatio();
    this.elements = {};
    this.events = [
      "mousemove",
      "mouseout",
      "click",
      "touchstart",
      "touchmove"
    ];
    this.font = {
      family: "'Helvetica Neue', 'Helvetica', 'Arial', sans-serif",
      size: 12,
      style: "normal",
      lineHeight: 1.2,
      weight: null
    };
    this.hover = {};
    this.hoverBackgroundColor = (ctx, options) => getHoverColor(options.backgroundColor);
    this.hoverBorderColor = (ctx, options) => getHoverColor(options.borderColor);
    this.hoverColor = (ctx, options) => getHoverColor(options.color);
    this.indexAxis = "x";
    this.interaction = {
      mode: "nearest",
      intersect: true,
      includeInvisible: false
    };
    this.maintainAspectRatio = true;
    this.onHover = null;
    this.onClick = null;
    this.parsing = true;
    this.plugins = {};
    this.responsive = true;
    this.scale = void 0;
    this.scales = {};
    this.showLine = true;
    this.drawActiveElementsOnTop = true;
    this.describe(_descriptors2);
    this.apply(_appliers);
  }
  set(scope, values) {
    return set(this, scope, values);
  }
  get(scope) {
    return getScope$1(this, scope);
  }
  describe(scope, values) {
    return set(descriptors, scope, values);
  }
  override(scope, values) {
    return set(overrides, scope, values);
  }
  route(scope, name2, targetScope, targetName) {
    const scopeObject = getScope$1(this, scope);
    const targetScopeObject = getScope$1(this, targetScope);
    const privateName = "_" + name2;
    Object.defineProperties(scopeObject, {
      [privateName]: {
        value: scopeObject[name2],
        writable: true
      },
      [name2]: {
        enumerable: true,
        get() {
          const local = this[privateName];
          const target = targetScopeObject[targetName];
          if (isObject(local)) {
            return Object.assign({}, target, local);
          }
          return valueOrDefault(local, target);
        },
        set(value) {
          this[privateName] = value;
        }
      }
    });
  }
  apply(appliers) {
    appliers.forEach((apply) => apply(this));
  }
}
var defaults = /* @__PURE__ */ new Defaults({
  _scriptable: (name2) => !name2.startsWith("on"),
  _indexable: (name2) => name2 !== "events",
  hover: {
    _fallback: "interaction"
  },
  interaction: {
    _scriptable: false,
    _indexable: false
  }
}, [
  applyAnimationsDefaults,
  applyLayoutsDefaults,
  applyScaleDefaults
]);
function toFontString(font) {
  if (!font || isNullOrUndef(font.size) || isNullOrUndef(font.family)) {
    return null;
  }
  return (font.style ? font.style + " " : "") + (font.weight ? font.weight + " " : "") + font.size + "px " + font.family;
}
function _measureText(ctx, data, gc, longest, string) {
  let textWidth = data[string];
  if (!textWidth) {
    textWidth = data[string] = ctx.measureText(string).width;
    gc.push(string);
  }
  if (textWidth > longest) {
    longest = textWidth;
  }
  return longest;
}
function _longestText(ctx, font, arrayOfThings, cache) {
  cache = cache || {};
  let data = cache.data = cache.data || {};
  let gc = cache.garbageCollect = cache.garbageCollect || [];
  if (cache.font !== font) {
    data = cache.data = {};
    gc = cache.garbageCollect = [];
    cache.font = font;
  }
  ctx.save();
  ctx.font = font;
  let longest = 0;
  const ilen = arrayOfThings.length;
  let i, j, jlen, thing, nestedThing;
  for (i = 0; i < ilen; i++) {
    thing = arrayOfThings[i];
    if (thing !== void 0 && thing !== null && isArray(thing) !== true) {
      longest = _measureText(ctx, data, gc, longest, thing);
    } else if (isArray(thing)) {
      for (j = 0, jlen = thing.length; j < jlen; j++) {
        nestedThing = thing[j];
        if (nestedThing !== void 0 && nestedThing !== null && !isArray(nestedThing)) {
          longest = _measureText(ctx, data, gc, longest, nestedThing);
        }
      }
    }
  }
  ctx.restore();
  const gcLen = gc.length / 2;
  if (gcLen > arrayOfThings.length) {
    for (i = 0; i < gcLen; i++) {
      delete data[gc[i]];
    }
    gc.splice(0, gcLen);
  }
  return longest;
}
function _alignPixel(chart, pixel, width) {
  const devicePixelRatio = chart.currentDevicePixelRatio;
  const halfWidth = width !== 0 ? Math.max(width / 2, 0.5) : 0;
  return Math.round((pixel - halfWidth) * devicePixelRatio) / devicePixelRatio + halfWidth;
}
function clearCanvas(canvas, ctx) {
  ctx = ctx || canvas.getContext("2d");
  ctx.save();
  ctx.resetTransform();
  ctx.clearRect(0, 0, canvas.width, canvas.height);
  ctx.restore();
}
function drawPoint(ctx, options, x, y) {
  drawPointLegend(ctx, options, x, y, null);
}
function drawPointLegend(ctx, options, x, y, w) {
  let type, xOffset, yOffset, size, cornerRadius, width, xOffsetW, yOffsetW;
  const style = options.pointStyle;
  const rotation = options.rotation;
  const radius = options.radius;
  let rad = (rotation || 0) * RAD_PER_DEG;
  if (style && typeof style === "object") {
    type = style.toString();
    if (type === "[object HTMLImageElement]" || type === "[object HTMLCanvasElement]") {
      ctx.save();
      ctx.translate(x, y);
      ctx.rotate(rad);
      ctx.drawImage(style, -style.width / 2, -style.height / 2, style.width, style.height);
      ctx.restore();
      return;
    }
  }
  if (isNaN(radius) || radius <= 0) {
    return;
  }
  ctx.beginPath();
  switch (style) {
    default:
      if (w) {
        ctx.ellipse(x, y, w / 2, radius, 0, 0, TAU);
      } else {
        ctx.arc(x, y, radius, 0, TAU);
      }
      ctx.closePath();
      break;
    case "triangle":
      width = w ? w / 2 : radius;
      ctx.moveTo(x + Math.sin(rad) * width, y - Math.cos(rad) * radius);
      rad += TWO_THIRDS_PI;
      ctx.lineTo(x + Math.sin(rad) * width, y - Math.cos(rad) * radius);
      rad += TWO_THIRDS_PI;
      ctx.lineTo(x + Math.sin(rad) * width, y - Math.cos(rad) * radius);
      ctx.closePath();
      break;
    case "rectRounded":
      cornerRadius = radius * 0.516;
      size = radius - cornerRadius;
      xOffset = Math.cos(rad + QUARTER_PI) * size;
      xOffsetW = Math.cos(rad + QUARTER_PI) * (w ? w / 2 - cornerRadius : size);
      yOffset = Math.sin(rad + QUARTER_PI) * size;
      yOffsetW = Math.sin(rad + QUARTER_PI) * (w ? w / 2 - cornerRadius : size);
      ctx.arc(x - xOffsetW, y - yOffset, cornerRadius, rad - PI, rad - HALF_PI);
      ctx.arc(x + yOffsetW, y - xOffset, cornerRadius, rad - HALF_PI, rad);
      ctx.arc(x + xOffsetW, y + yOffset, cornerRadius, rad, rad + HALF_PI);
      ctx.arc(x - yOffsetW, y + xOffset, cornerRadius, rad + HALF_PI, rad + PI);
      ctx.closePath();
      break;
    case "rect":
      if (!rotation) {
        size = Math.SQRT1_2 * radius;
        width = w ? w / 2 : size;
        ctx.rect(x - width, y - size, 2 * width, 2 * size);
        break;
      }
      rad += QUARTER_PI;
    case "rectRot":
      xOffsetW = Math.cos(rad) * (w ? w / 2 : radius);
      xOffset = Math.cos(rad) * radius;
      yOffset = Math.sin(rad) * radius;
      yOffsetW = Math.sin(rad) * (w ? w / 2 : radius);
      ctx.moveTo(x - xOffsetW, y - yOffset);
      ctx.lineTo(x + yOffsetW, y - xOffset);
      ctx.lineTo(x + xOffsetW, y + yOffset);
      ctx.lineTo(x - yOffsetW, y + xOffset);
      ctx.closePath();
      break;
    case "crossRot":
      rad += QUARTER_PI;
    case "cross":
      xOffsetW = Math.cos(rad) * (w ? w / 2 : radius);
      xOffset = Math.cos(rad) * radius;
      yOffset = Math.sin(rad) * radius;
      yOffsetW = Math.sin(rad) * (w ? w / 2 : radius);
      ctx.moveTo(x - xOffsetW, y - yOffset);
      ctx.lineTo(x + xOffsetW, y + yOffset);
      ctx.moveTo(x + yOffsetW, y - xOffset);
      ctx.lineTo(x - yOffsetW, y + xOffset);
      break;
    case "star":
      xOffsetW = Math.cos(rad) * (w ? w / 2 : radius);
      xOffset = Math.cos(rad) * radius;
      yOffset = Math.sin(rad) * radius;
      yOffsetW = Math.sin(rad) * (w ? w / 2 : radius);
      ctx.moveTo(x - xOffsetW, y - yOffset);
      ctx.lineTo(x + xOffsetW, y + yOffset);
      ctx.moveTo(x + yOffsetW, y - xOffset);
      ctx.lineTo(x - yOffsetW, y + xOffset);
      rad += QUARTER_PI;
      xOffsetW = Math.cos(rad) * (w ? w / 2 : radius);
      xOffset = Math.cos(rad) * radius;
      yOffset = Math.sin(rad) * radius;
      yOffsetW = Math.sin(rad) * (w ? w / 2 : radius);
      ctx.moveTo(x - xOffsetW, y - yOffset);
      ctx.lineTo(x + xOffsetW, y + yOffset);
      ctx.moveTo(x + yOffsetW, y - xOffset);
      ctx.lineTo(x - yOffsetW, y + xOffset);
      break;
    case "line":
      xOffset = w ? w / 2 : Math.cos(rad) * radius;
      yOffset = Math.sin(rad) * radius;
      ctx.moveTo(x - xOffset, y - yOffset);
      ctx.lineTo(x + xOffset, y + yOffset);
      break;
    case "dash":
      ctx.moveTo(x, y);
      ctx.lineTo(x + Math.cos(rad) * (w ? w / 2 : radius), y + Math.sin(rad) * radius);
      break;
    case false:
      ctx.closePath();
      break;
  }
  ctx.fill();
  if (options.borderWidth > 0) {
    ctx.stroke();
  }
}
function _isPointInArea(point, area, margin) {
  margin = margin || 0.5;
  return !area || point && point.x > area.left - margin && point.x < area.right + margin && point.y > area.top - margin && point.y < area.bottom + margin;
}
function clipArea(ctx, area) {
  ctx.save();
  ctx.beginPath();
  ctx.rect(area.left, area.top, area.right - area.left, area.bottom - area.top);
  ctx.clip();
}
function unclipArea(ctx) {
  ctx.restore();
}
function _steppedLineTo(ctx, previous, target, flip, mode) {
  if (!previous) {
    return ctx.lineTo(target.x, target.y);
  }
  if (mode === "middle") {
    const midpoint = (previous.x + target.x) / 2;
    ctx.lineTo(midpoint, previous.y);
    ctx.lineTo(midpoint, target.y);
  } else if (mode === "after" !== !!flip) {
    ctx.lineTo(previous.x, target.y);
  } else {
    ctx.lineTo(target.x, previous.y);
  }
  ctx.lineTo(target.x, target.y);
}
function _bezierCurveTo(ctx, previous, target, flip) {
  if (!previous) {
    return ctx.lineTo(target.x, target.y);
  }
  ctx.bezierCurveTo(flip ? previous.cp1x : previous.cp2x, flip ? previous.cp1y : previous.cp2y, flip ? target.cp2x : target.cp1x, flip ? target.cp2y : target.cp1y, target.x, target.y);
}
function renderText(ctx, text, x, y, font, opts = {}) {
  const lines = isArray(text) ? text : [
    text
  ];
  const stroke = opts.strokeWidth > 0 && opts.strokeColor !== "";
  let i, line;
  ctx.save();
  ctx.font = font.string;
  setRenderOpts(ctx, opts);
  for (i = 0; i < lines.length; ++i) {
    line = lines[i];
    if (opts.backdrop) {
      drawBackdrop(ctx, opts.backdrop);
    }
    if (stroke) {
      if (opts.strokeColor) {
        ctx.strokeStyle = opts.strokeColor;
      }
      if (!isNullOrUndef(opts.strokeWidth)) {
        ctx.lineWidth = opts.strokeWidth;
      }
      ctx.strokeText(line, x, y, opts.maxWidth);
    }
    ctx.fillText(line, x, y, opts.maxWidth);
    decorateText(ctx, x, y, line, opts);
    y += font.lineHeight;
  }
  ctx.restore();
}
function setRenderOpts(ctx, opts) {
  if (opts.translation) {
    ctx.translate(opts.translation[0], opts.translation[1]);
  }
  if (!isNullOrUndef(opts.rotation)) {
    ctx.rotate(opts.rotation);
  }
  if (opts.color) {
    ctx.fillStyle = opts.color;
  }
  if (opts.textAlign) {
    ctx.textAlign = opts.textAlign;
  }
  if (opts.textBaseline) {
    ctx.textBaseline = opts.textBaseline;
  }
}
function decorateText(ctx, x, y, line, opts) {
  if (opts.strikethrough || opts.underline) {
    const metrics = ctx.measureText(line);
    const left = x - metrics.actualBoundingBoxLeft;
    const right = x + metrics.actualBoundingBoxRight;
    const top = y - metrics.actualBoundingBoxAscent;
    const bottom = y + metrics.actualBoundingBoxDescent;
    const yDecoration = opts.strikethrough ? (top + bottom) / 2 : bottom;
    ctx.strokeStyle = ctx.fillStyle;
    ctx.beginPath();
    ctx.lineWidth = opts.decorationWidth || 2;
    ctx.moveTo(left, yDecoration);
    ctx.lineTo(right, yDecoration);
    ctx.stroke();
  }
}
function drawBackdrop(ctx, opts) {
  const oldColor = ctx.fillStyle;
  ctx.fillStyle = opts.color;
  ctx.fillRect(opts.left, opts.top, opts.width, opts.height);
  ctx.fillStyle = oldColor;
}
function addRoundedRectPath(ctx, rect) {
  const { x, y, w, h, radius } = rect;
  ctx.arc(x + radius.topLeft, y + radius.topLeft, radius.topLeft, -HALF_PI, PI, true);
  ctx.lineTo(x, y + h - radius.bottomLeft);
  ctx.arc(x + radius.bottomLeft, y + h - radius.bottomLeft, radius.bottomLeft, PI, HALF_PI, true);
  ctx.lineTo(x + w - radius.bottomRight, y + h);
  ctx.arc(x + w - radius.bottomRight, y + h - radius.bottomRight, radius.bottomRight, HALF_PI, 0, true);
  ctx.lineTo(x + w, y + radius.topRight);
  ctx.arc(x + w - radius.topRight, y + radius.topRight, radius.topRight, 0, -HALF_PI, true);
  ctx.lineTo(x + radius.topLeft, y);
}
const LINE_HEIGHT = /^(normal|(\d+(?:\.\d+)?)(px|em|%)?)$/;
const FONT_STYLE = /^(normal|italic|initial|inherit|unset|(oblique( -?[0-9]?[0-9]deg)?))$/;
function toLineHeight(value, size) {
  const matches = ("" + value).match(LINE_HEIGHT);
  if (!matches || matches[1] === "normal") {
    return size * 1.2;
  }
  value = +matches[2];
  switch (matches[3]) {
    case "px":
      return value;
    case "%":
      value /= 100;
      break;
  }
  return size * value;
}
const numberOrZero = (v) => +v || 0;
function _readValueToProps(value, props) {
  const ret = {};
  const objProps = isObject(props);
  const keys = objProps ? Object.keys(props) : props;
  const read = isObject(value) ? objProps ? (prop) => valueOrDefault(value[prop], value[props[prop]]) : (prop) => value[prop] : () => value;
  for (const prop of keys) {
    ret[prop] = numberOrZero(read(prop));
  }
  return ret;
}
function toTRBL(value) {
  return _readValueToProps(value, {
    top: "y",
    right: "x",
    bottom: "y",
    left: "x"
  });
}
function toTRBLCorners(value) {
  return _readValueToProps(value, [
    "topLeft",
    "topRight",
    "bottomLeft",
    "bottomRight"
  ]);
}
function toPadding(value) {
  const obj = toTRBL(value);
  obj.width = obj.left + obj.right;
  obj.height = obj.top + obj.bottom;
  return obj;
}
function toFont(options, fallback) {
  options = options || {};
  fallback = fallback || defaults.font;
  let size = valueOrDefault(options.size, fallback.size);
  if (typeof size === "string") {
    size = parseInt(size, 10);
  }
  let style = valueOrDefault(options.style, fallback.style);
  if (style && !("" + style).match(FONT_STYLE)) {
    console.warn('Invalid font style specified: "' + style + '"');
    style = void 0;
  }
  const font = {
    family: valueOrDefault(options.family, fallback.family),
    lineHeight: toLineHeight(valueOrDefault(options.lineHeight, fallback.lineHeight), size),
    size,
    style,
    weight: valueOrDefault(options.weight, fallback.weight),
    string: ""
  };
  font.string = toFontString(font);
  return font;
}
function resolve(inputs, context, index2, info) {
  let cacheable = true;
  let i, ilen, value;
  for (i = 0, ilen = inputs.length; i < ilen; ++i) {
    value = inputs[i];
    if (value === void 0) {
      continue;
    }
    if (context !== void 0 && typeof value === "function") {
      value = value(context);
      cacheable = false;
    }
    if (index2 !== void 0 && isArray(value)) {
      value = value[index2 % value.length];
      cacheable = false;
    }
    if (value !== void 0) {
      if (info && !cacheable) {
        info.cacheable = false;
      }
      return value;
    }
  }
}
function _addGrace(minmax, grace, beginAtZero) {
  const { min, max } = minmax;
  const change = toDimension(grace, (max - min) / 2);
  const keepZero = (value, add) => beginAtZero && value === 0 ? 0 : value + add;
  return {
    min: keepZero(min, -Math.abs(change)),
    max: keepZero(max, change)
  };
}
function createContext(parentContext, context) {
  return Object.assign(Object.create(parentContext), context);
}
function _createResolver(scopes, prefixes = [
  ""
], rootScopes = scopes, fallback, getTarget = () => scopes[0]) {
  if (!defined(fallback)) {
    fallback = _resolve("_fallback", scopes);
  }
  const cache = {
    [Symbol.toStringTag]: "Object",
    _cacheable: true,
    _scopes: scopes,
    _rootScopes: rootScopes,
    _fallback: fallback,
    _getTarget: getTarget,
    override: (scope) => _createResolver([
      scope,
      ...scopes
    ], prefixes, rootScopes, fallback)
  };
  return new Proxy(cache, {
    deleteProperty(target, prop) {
      delete target[prop];
      delete target._keys;
      delete scopes[0][prop];
      return true;
    },
    get(target, prop) {
      return _cached(target, prop, () => _resolveWithPrefixes(prop, prefixes, scopes, target));
    },
    getOwnPropertyDescriptor(target, prop) {
      return Reflect.getOwnPropertyDescriptor(target._scopes[0], prop);
    },
    getPrototypeOf() {
      return Reflect.getPrototypeOf(scopes[0]);
    },
    has(target, prop) {
      return getKeysFromAllScopes(target).includes(prop);
    },
    ownKeys(target) {
      return getKeysFromAllScopes(target);
    },
    set(target, prop, value) {
      const storage = target._storage || (target._storage = getTarget());
      target[prop] = storage[prop] = value;
      delete target._keys;
      return true;
    }
  });
}
function _attachContext(proxy, context, subProxy, descriptorDefaults) {
  const cache = {
    _cacheable: false,
    _proxy: proxy,
    _context: context,
    _subProxy: subProxy,
    _stack: /* @__PURE__ */ new Set(),
    _descriptors: _descriptors(proxy, descriptorDefaults),
    setContext: (ctx) => _attachContext(proxy, ctx, subProxy, descriptorDefaults),
    override: (scope) => _attachContext(proxy.override(scope), context, subProxy, descriptorDefaults)
  };
  return new Proxy(cache, {
    deleteProperty(target, prop) {
      delete target[prop];
      delete proxy[prop];
      return true;
    },
    get(target, prop, receiver) {
      return _cached(target, prop, () => _resolveWithContext(target, prop, receiver));
    },
    getOwnPropertyDescriptor(target, prop) {
      return target._descriptors.allKeys ? Reflect.has(proxy, prop) ? {
        enumerable: true,
        configurable: true
      } : void 0 : Reflect.getOwnPropertyDescriptor(proxy, prop);
    },
    getPrototypeOf() {
      return Reflect.getPrototypeOf(proxy);
    },
    has(target, prop) {
      return Reflect.has(proxy, prop);
    },
    ownKeys() {
      return Reflect.ownKeys(proxy);
    },
    set(target, prop, value) {
      proxy[prop] = value;
      delete target[prop];
      return true;
    }
  });
}
function _descriptors(proxy, defaults2 = {
  scriptable: true,
  indexable: true
}) {
  const { _scriptable = defaults2.scriptable, _indexable = defaults2.indexable, _allKeys = defaults2.allKeys } = proxy;
  return {
    allKeys: _allKeys,
    scriptable: _scriptable,
    indexable: _indexable,
    isScriptable: isFunction(_scriptable) ? _scriptable : () => _scriptable,
    isIndexable: isFunction(_indexable) ? _indexable : () => _indexable
  };
}
const readKey = (prefix, name2) => prefix ? prefix + _capitalize(name2) : name2;
const needsSubResolver = (prop, value) => isObject(value) && prop !== "adapters" && (Object.getPrototypeOf(value) === null || value.constructor === Object);
function _cached(target, prop, resolve2) {
  if (Object.prototype.hasOwnProperty.call(target, prop)) {
    return target[prop];
  }
  const value = resolve2();
  target[prop] = value;
  return value;
}
function _resolveWithContext(target, prop, receiver) {
  const { _proxy, _context, _subProxy, _descriptors: descriptors2 } = target;
  let value = _proxy[prop];
  if (isFunction(value) && descriptors2.isScriptable(prop)) {
    value = _resolveScriptable(prop, value, target, receiver);
  }
  if (isArray(value) && value.length) {
    value = _resolveArray(prop, value, target, descriptors2.isIndexable);
  }
  if (needsSubResolver(prop, value)) {
    value = _attachContext(value, _context, _subProxy && _subProxy[prop], descriptors2);
  }
  return value;
}
function _resolveScriptable(prop, value, target, receiver) {
  const { _proxy, _context, _subProxy, _stack } = target;
  if (_stack.has(prop)) {
    throw new Error("Recursion detected: " + Array.from(_stack).join("->") + "->" + prop);
  }
  _stack.add(prop);
  value = value(_context, _subProxy || receiver);
  _stack.delete(prop);
  if (needsSubResolver(prop, value)) {
    value = createSubResolver(_proxy._scopes, _proxy, prop, value);
  }
  return value;
}
function _resolveArray(prop, value, target, isIndexable) {
  const { _proxy, _context, _subProxy, _descriptors: descriptors2 } = target;
  if (defined(_context.index) && isIndexable(prop)) {
    value = value[_context.index % value.length];
  } else if (isObject(value[0])) {
    const arr = value;
    const scopes = _proxy._scopes.filter((s) => s !== arr);
    value = [];
    for (const item of arr) {
      const resolver = createSubResolver(scopes, _proxy, prop, item);
      value.push(_attachContext(resolver, _context, _subProxy && _subProxy[prop], descriptors2));
    }
  }
  return value;
}
function resolveFallback(fallback, prop, value) {
  return isFunction(fallback) ? fallback(prop, value) : fallback;
}
const getScope = (key, parent) => key === true ? parent : typeof key === "string" ? resolveObjectKey(parent, key) : void 0;
function addScopes(set2, parentScopes, key, parentFallback, value) {
  for (const parent of parentScopes) {
    const scope = getScope(key, parent);
    if (scope) {
      set2.add(scope);
      const fallback = resolveFallback(scope._fallback, key, value);
      if (defined(fallback) && fallback !== key && fallback !== parentFallback) {
        return fallback;
      }
    } else if (scope === false && defined(parentFallback) && key !== parentFallback) {
      return null;
    }
  }
  return false;
}
function createSubResolver(parentScopes, resolver, prop, value) {
  const rootScopes = resolver._rootScopes;
  const fallback = resolveFallback(resolver._fallback, prop, value);
  const allScopes = [
    ...parentScopes,
    ...rootScopes
  ];
  const set2 = /* @__PURE__ */ new Set();
  set2.add(value);
  let key = addScopesFromKey(set2, allScopes, prop, fallback || prop, value);
  if (key === null) {
    return false;
  }
  if (defined(fallback) && fallback !== prop) {
    key = addScopesFromKey(set2, allScopes, fallback, key, value);
    if (key === null) {
      return false;
    }
  }
  return _createResolver(Array.from(set2), [
    ""
  ], rootScopes, fallback, () => subGetTarget(resolver, prop, value));
}
function addScopesFromKey(set2, allScopes, key, fallback, item) {
  while (key) {
    key = addScopes(set2, allScopes, key, fallback, item);
  }
  return key;
}
function subGetTarget(resolver, prop, value) {
  const parent = resolver._getTarget();
  if (!(prop in parent)) {
    parent[prop] = {};
  }
  const target = parent[prop];
  if (isArray(target) && isObject(value)) {
    return value;
  }
  return target || {};
}
function _resolveWithPrefixes(prop, prefixes, scopes, proxy) {
  let value;
  for (const prefix of prefixes) {
    value = _resolve(readKey(prefix, prop), scopes);
    if (defined(value)) {
      return needsSubResolver(prop, value) ? createSubResolver(scopes, proxy, prop, value) : value;
    }
  }
}
function _resolve(key, scopes) {
  for (const scope of scopes) {
    if (!scope) {
      continue;
    }
    const value = scope[key];
    if (defined(value)) {
      return value;
    }
  }
}
function getKeysFromAllScopes(target) {
  let keys = target._keys;
  if (!keys) {
    keys = target._keys = resolveKeysFromAllScopes(target._scopes);
  }
  return keys;
}
function resolveKeysFromAllScopes(scopes) {
  const set2 = /* @__PURE__ */ new Set();
  for (const scope of scopes) {
    for (const key of Object.keys(scope).filter((k) => !k.startsWith("_"))) {
      set2.add(key);
    }
  }
  return Array.from(set2);
}
function _parseObjectDataRadialScale(meta, data, start, count) {
  const { iScale } = meta;
  const { key = "r" } = this._parsing;
  const parsed = new Array(count);
  let i, ilen, index2, item;
  for (i = 0, ilen = count; i < ilen; ++i) {
    index2 = i + start;
    item = data[index2];
    parsed[i] = {
      r: iScale.parse(resolveObjectKey(item, key), index2)
    };
  }
  return parsed;
}
const EPSILON = Number.EPSILON || 1e-14;
const getPoint = (points, i) => i < points.length && !points[i].skip && points[i];
const getValueAxis = (indexAxis) => indexAxis === "x" ? "y" : "x";
function splineCurve(firstPoint, middlePoint, afterPoint, t) {
  const previous = firstPoint.skip ? middlePoint : firstPoint;
  const current = middlePoint;
  const next = afterPoint.skip ? middlePoint : afterPoint;
  const d01 = distanceBetweenPoints(current, previous);
  const d12 = distanceBetweenPoints(next, current);
  let s01 = d01 / (d01 + d12);
  let s12 = d12 / (d01 + d12);
  s01 = isNaN(s01) ? 0 : s01;
  s12 = isNaN(s12) ? 0 : s12;
  const fa = t * s01;
  const fb = t * s12;
  return {
    previous: {
      x: current.x - fa * (next.x - previous.x),
      y: current.y - fa * (next.y - previous.y)
    },
    next: {
      x: current.x + fb * (next.x - previous.x),
      y: current.y + fb * (next.y - previous.y)
    }
  };
}
function monotoneAdjust(points, deltaK, mK) {
  const pointsLen = points.length;
  let alphaK, betaK, tauK, squaredMagnitude, pointCurrent;
  let pointAfter = getPoint(points, 0);
  for (let i = 0; i < pointsLen - 1; ++i) {
    pointCurrent = pointAfter;
    pointAfter = getPoint(points, i + 1);
    if (!pointCurrent || !pointAfter) {
      continue;
    }
    if (almostEquals(deltaK[i], 0, EPSILON)) {
      mK[i] = mK[i + 1] = 0;
      continue;
    }
    alphaK = mK[i] / deltaK[i];
    betaK = mK[i + 1] / deltaK[i];
    squaredMagnitude = Math.pow(alphaK, 2) + Math.pow(betaK, 2);
    if (squaredMagnitude <= 9) {
      continue;
    }
    tauK = 3 / Math.sqrt(squaredMagnitude);
    mK[i] = alphaK * tauK * deltaK[i];
    mK[i + 1] = betaK * tauK * deltaK[i];
  }
}
function monotoneCompute(points, mK, indexAxis = "x") {
  const valueAxis = getValueAxis(indexAxis);
  const pointsLen = points.length;
  let delta, pointBefore, pointCurrent;
  let pointAfter = getPoint(points, 0);
  for (let i = 0; i < pointsLen; ++i) {
    pointBefore = pointCurrent;
    pointCurrent = pointAfter;
    pointAfter = getPoint(points, i + 1);
    if (!pointCurrent) {
      continue;
    }
    const iPixel = pointCurrent[indexAxis];
    const vPixel = pointCurrent[valueAxis];
    if (pointBefore) {
      delta = (iPixel - pointBefore[indexAxis]) / 3;
      pointCurrent[`cp1${indexAxis}`] = iPixel - delta;
      pointCurrent[`cp1${valueAxis}`] = vPixel - delta * mK[i];
    }
    if (pointAfter) {
      delta = (pointAfter[indexAxis] - iPixel) / 3;
      pointCurrent[`cp2${indexAxis}`] = iPixel + delta;
      pointCurrent[`cp2${valueAxis}`] = vPixel + delta * mK[i];
    }
  }
}
function splineCurveMonotone(points, indexAxis = "x") {
  const valueAxis = getValueAxis(indexAxis);
  const pointsLen = points.length;
  const deltaK = Array(pointsLen).fill(0);
  const mK = Array(pointsLen);
  let i, pointBefore, pointCurrent;
  let pointAfter = getPoint(points, 0);
  for (i = 0; i < pointsLen; ++i) {
    pointBefore = pointCurrent;
    pointCurrent = pointAfter;
    pointAfter = getPoint(points, i + 1);
    if (!pointCurrent) {
      continue;
    }
    if (pointAfter) {
      const slopeDelta = pointAfter[indexAxis] - pointCurrent[indexAxis];
      deltaK[i] = slopeDelta !== 0 ? (pointAfter[valueAxis] - pointCurrent[valueAxis]) / slopeDelta : 0;
    }
    mK[i] = !pointBefore ? deltaK[i] : !pointAfter ? deltaK[i - 1] : sign(deltaK[i - 1]) !== sign(deltaK[i]) ? 0 : (deltaK[i - 1] + deltaK[i]) / 2;
  }
  monotoneAdjust(points, deltaK, mK);
  monotoneCompute(points, mK, indexAxis);
}
function capControlPoint(pt, min, max) {
  return Math.max(Math.min(pt, max), min);
}
function capBezierPoints(points, area) {
  let i, ilen, point, inArea, inAreaPrev;
  let inAreaNext = _isPointInArea(points[0], area);
  for (i = 0, ilen = points.length; i < ilen; ++i) {
    inAreaPrev = inArea;
    inArea = inAreaNext;
    inAreaNext = i < ilen - 1 && _isPointInArea(points[i + 1], area);
    if (!inArea) {
      continue;
    }
    point = points[i];
    if (inAreaPrev) {
      point.cp1x = capControlPoint(point.cp1x, area.left, area.right);
      point.cp1y = capControlPoint(point.cp1y, area.top, area.bottom);
    }
    if (inAreaNext) {
      point.cp2x = capControlPoint(point.cp2x, area.left, area.right);
      point.cp2y = capControlPoint(point.cp2y, area.top, area.bottom);
    }
  }
}
function _updateBezierControlPoints(points, options, area, loop, indexAxis) {
  let i, ilen, point, controlPoints;
  if (options.spanGaps) {
    points = points.filter((pt) => !pt.skip);
  }
  if (options.cubicInterpolationMode === "monotone") {
    splineCurveMonotone(points, indexAxis);
  } else {
    let prev = loop ? points[points.length - 1] : points[0];
    for (i = 0, ilen = points.length; i < ilen; ++i) {
      point = points[i];
      controlPoints = splineCurve(prev, point, points[Math.min(i + 1, ilen - (loop ? 0 : 1)) % ilen], options.tension);
      point.cp1x = controlPoints.previous.x;
      point.cp1y = controlPoints.previous.y;
      point.cp2x = controlPoints.next.x;
      point.cp2y = controlPoints.next.y;
      prev = point;
    }
  }
  if (options.capBezierPoints) {
    capBezierPoints(points, area);
  }
}
function _isDomSupported() {
  return typeof window !== "undefined" && typeof document !== "undefined";
}
function _getParentNode(domNode) {
  let parent = domNode.parentNode;
  if (parent && parent.toString() === "[object ShadowRoot]") {
    parent = parent.host;
  }
  return parent;
}
function parseMaxStyle(styleValue, node, parentProperty) {
  let valueInPixels;
  if (typeof styleValue === "string") {
    valueInPixels = parseInt(styleValue, 10);
    if (styleValue.indexOf("%") !== -1) {
      valueInPixels = valueInPixels / 100 * node.parentNode[parentProperty];
    }
  } else {
    valueInPixels = styleValue;
  }
  return valueInPixels;
}
const getComputedStyle = (element) => element.ownerDocument.defaultView.getComputedStyle(element, null);
function getStyle(el, property) {
  return getComputedStyle(el).getPropertyValue(property);
}
const positions = [
  "top",
  "right",
  "bottom",
  "left"
];
function getPositionedStyle(styles, style, suffix) {
  const result = {};
  suffix = suffix ? "-" + suffix : "";
  for (let i = 0; i < 4; i++) {
    const pos = positions[i];
    result[pos] = parseFloat(styles[style + "-" + pos + suffix]) || 0;
  }
  result.width = result.left + result.right;
  result.height = result.top + result.bottom;
  return result;
}
const useOffsetPos = (x, y, target) => (x > 0 || y > 0) && (!target || !target.shadowRoot);
function getCanvasPosition(e, canvas) {
  const touches = e.touches;
  const source = touches && touches.length ? touches[0] : e;
  const { offsetX, offsetY } = source;
  let box = false;
  let x, y;
  if (useOffsetPos(offsetX, offsetY, e.target)) {
    x = offsetX;
    y = offsetY;
  } else {
    const rect = canvas.getBoundingClientRect();
    x = source.clientX - rect.left;
    y = source.clientY - rect.top;
    box = true;
  }
  return {
    x,
    y,
    box
  };
}
function getRelativePosition(event, chart) {
  if ("native" in event) {
    return event;
  }
  const { canvas, currentDevicePixelRatio } = chart;
  const style = getComputedStyle(canvas);
  const borderBox = style.boxSizing === "border-box";
  const paddings = getPositionedStyle(style, "padding");
  const borders = getPositionedStyle(style, "border", "width");
  const { x, y, box } = getCanvasPosition(event, canvas);
  const xOffset = paddings.left + (box && borders.left);
  const yOffset = paddings.top + (box && borders.top);
  let { width, height } = chart;
  if (borderBox) {
    width -= paddings.width + borders.width;
    height -= paddings.height + borders.height;
  }
  return {
    x: Math.round((x - xOffset) / width * canvas.width / currentDevicePixelRatio),
    y: Math.round((y - yOffset) / height * canvas.height / currentDevicePixelRatio)
  };
}
function getContainerSize(canvas, width, height) {
  let maxWidth, maxHeight;
  if (width === void 0 || height === void 0) {
    const container = _getParentNode(canvas);
    if (!container) {
      width = canvas.clientWidth;
      height = canvas.clientHeight;
    } else {
      const rect = container.getBoundingClientRect();
      const containerStyle = getComputedStyle(container);
      const containerBorder = getPositionedStyle(containerStyle, "border", "width");
      const containerPadding = getPositionedStyle(containerStyle, "padding");
      width = rect.width - containerPadding.width - containerBorder.width;
      height = rect.height - containerPadding.height - containerBorder.height;
      maxWidth = parseMaxStyle(containerStyle.maxWidth, container, "clientWidth");
      maxHeight = parseMaxStyle(containerStyle.maxHeight, container, "clientHeight");
    }
  }
  return {
    width,
    height,
    maxWidth: maxWidth || INFINITY,
    maxHeight: maxHeight || INFINITY
  };
}
const round1 = (v) => Math.round(v * 10) / 10;
function getMaximumSize(canvas, bbWidth, bbHeight, aspectRatio) {
  const style = getComputedStyle(canvas);
  const margins = getPositionedStyle(style, "margin");
  const maxWidth = parseMaxStyle(style.maxWidth, canvas, "clientWidth") || INFINITY;
  const maxHeight = parseMaxStyle(style.maxHeight, canvas, "clientHeight") || INFINITY;
  const containerSize = getContainerSize(canvas, bbWidth, bbHeight);
  let { width, height } = containerSize;
  if (style.boxSizing === "content-box") {
    const borders = getPositionedStyle(style, "border", "width");
    const paddings = getPositionedStyle(style, "padding");
    width -= paddings.width + borders.width;
    height -= paddings.height + borders.height;
  }
  width = Math.max(0, width - margins.width);
  height = Math.max(0, aspectRatio ? width / aspectRatio : height - margins.height);
  width = round1(Math.min(width, maxWidth, containerSize.maxWidth));
  height = round1(Math.min(height, maxHeight, containerSize.maxHeight));
  if (width && !height) {
    height = round1(width / 2);
  }
  const maintainHeight = bbWidth !== void 0 || bbHeight !== void 0;
  if (maintainHeight && aspectRatio && containerSize.height && height > containerSize.height) {
    height = containerSize.height;
    width = round1(Math.floor(height * aspectRatio));
  }
  return {
    width,
    height
  };
}
function retinaScale(chart, forceRatio, forceStyle) {
  const pixelRatio = forceRatio || 1;
  const deviceHeight = Math.floor(chart.height * pixelRatio);
  const deviceWidth = Math.floor(chart.width * pixelRatio);
  chart.height = Math.floor(chart.height);
  chart.width = Math.floor(chart.width);
  const canvas = chart.canvas;
  if (canvas.style && (forceStyle || !canvas.style.height && !canvas.style.width)) {
    canvas.style.height = `${chart.height}px`;
    canvas.style.width = `${chart.width}px`;
  }
  if (chart.currentDevicePixelRatio !== pixelRatio || canvas.height !== deviceHeight || canvas.width !== deviceWidth) {
    chart.currentDevicePixelRatio = pixelRatio;
    canvas.height = deviceHeight;
    canvas.width = deviceWidth;
    chart.ctx.setTransform(pixelRatio, 0, 0, pixelRatio, 0, 0);
    return true;
  }
  return false;
}
const supportsEventListenerOptions = function() {
  let passiveSupported = false;
  try {
    const options = {
      get passive() {
        passiveSupported = true;
        return false;
      }
    };
    window.addEventListener("test", null, options);
    window.removeEventListener("test", null, options);
  } catch (e) {
  }
  return passiveSupported;
}();
function readUsedSize(element, property) {
  const value = getStyle(element, property);
  const matches = value && value.match(/^(\d+)(\.\d+)?px$/);
  return matches ? +matches[1] : void 0;
}
function _pointInLine(p1, p2, t, mode) {
  return {
    x: p1.x + t * (p2.x - p1.x),
    y: p1.y + t * (p2.y - p1.y)
  };
}
function _steppedInterpolation(p1, p2, t, mode) {
  return {
    x: p1.x + t * (p2.x - p1.x),
    y: mode === "middle" ? t < 0.5 ? p1.y : p2.y : mode === "after" ? t < 1 ? p1.y : p2.y : t > 0 ? p2.y : p1.y
  };
}
function _bezierInterpolation(p1, p2, t, mode) {
  const cp1 = {
    x: p1.cp2x,
    y: p1.cp2y
  };
  const cp2 = {
    x: p2.cp1x,
    y: p2.cp1y
  };
  const a = _pointInLine(p1, cp1, t);
  const b = _pointInLine(cp1, cp2, t);
  const c = _pointInLine(cp2, p2, t);
  const d = _pointInLine(a, b, t);
  const e = _pointInLine(b, c, t);
  return _pointInLine(d, e, t);
}
const getRightToLeftAdapter = function(rectX, width) {
  return {
    x(x) {
      return rectX + rectX + width - x;
    },
    setWidth(w) {
      width = w;
    },
    textAlign(align) {
      if (align === "center") {
        return align;
      }
      return align === "right" ? "left" : "right";
    },
    xPlus(x, value) {
      return x - value;
    },
    leftForLtr(x, itemWidth) {
      return x - itemWidth;
    }
  };
};
const getLeftToRightAdapter = function() {
  return {
    x(x) {
      return x;
    },
    setWidth(w) {
    },
    textAlign(align) {
      return align;
    },
    xPlus(x, value) {
      return x + value;
    },
    leftForLtr(x, _itemWidth) {
      return x;
    }
  };
};
function getRtlAdapter(rtl, rectX, width) {
  return rtl ? getRightToLeftAdapter(rectX, width) : getLeftToRightAdapter();
}
function overrideTextDirection(ctx, direction) {
  let style, original;
  if (direction === "ltr" || direction === "rtl") {
    style = ctx.canvas.style;
    original = [
      style.getPropertyValue("direction"),
      style.getPropertyPriority("direction")
    ];
    style.setProperty("direction", direction, "important");
    ctx.prevTextDirection = original;
  }
}
function restoreTextDirection(ctx, original) {
  if (original !== void 0) {
    delete ctx.prevTextDirection;
    ctx.canvas.style.setProperty("direction", original[0], original[1]);
  }
}
function propertyFn(property) {
  if (property === "angle") {
    return {
      between: _angleBetween,
      compare: _angleDiff,
      normalize: _normalizeAngle
    };
  }
  return {
    between: _isBetween,
    compare: (a, b) => a - b,
    normalize: (x) => x
  };
}
function normalizeSegment({ start, end, count, loop, style }) {
  return {
    start: start % count,
    end: end % count,
    loop: loop && (end - start + 1) % count === 0,
    style
  };
}
function getSegment(segment, points, bounds) {
  const { property, start: startBound, end: endBound } = bounds;
  const { between, normalize } = propertyFn(property);
  const count = points.length;
  let { start, end, loop } = segment;
  let i, ilen;
  if (loop) {
    start += count;
    end += count;
    for (i = 0, ilen = count; i < ilen; ++i) {
      if (!between(normalize(points[start % count][property]), startBound, endBound)) {
        break;
      }
      start--;
      end--;
    }
    start %= count;
    end %= count;
  }
  if (end < start) {
    end += count;
  }
  return {
    start,
    end,
    loop,
    style: segment.style
  };
}
function _boundSegment(segment, points, bounds) {
  if (!bounds) {
    return [
      segment
    ];
  }
  const { property, start: startBound, end: endBound } = bounds;
  const count = points.length;
  const { compare, between, normalize } = propertyFn(property);
  const { start, end, loop, style } = getSegment(segment, points, bounds);
  const result = [];
  let inside = false;
  let subStart = null;
  let value, point, prevValue;
  const startIsBefore = () => between(startBound, prevValue, value) && compare(startBound, prevValue) !== 0;
  const endIsBefore = () => compare(endBound, value) === 0 || between(endBound, prevValue, value);
  const shouldStart = () => inside || startIsBefore();
  const shouldStop = () => !inside || endIsBefore();
  for (let i = start, prev = start; i <= end; ++i) {
    point = points[i % count];
    if (point.skip) {
      continue;
    }
    value = normalize(point[property]);
    if (value === prevValue) {
      continue;
    }
    inside = between(value, startBound, endBound);
    if (subStart === null && shouldStart()) {
      subStart = compare(value, startBound) === 0 ? i : prev;
    }
    if (subStart !== null && shouldStop()) {
      result.push(normalizeSegment({
        start: subStart,
        end: i,
        loop,
        count,
        style
      }));
      subStart = null;
    }
    prev = i;
    prevValue = value;
  }
  if (subStart !== null) {
    result.push(normalizeSegment({
      start: subStart,
      end,
      loop,
      count,
      style
    }));
  }
  return result;
}
function _boundSegments(line, bounds) {
  const result = [];
  const segments = line.segments;
  for (let i = 0; i < segments.length; i++) {
    const sub = _boundSegment(segments[i], line.points, bounds);
    if (sub.length) {
      result.push(...sub);
    }
  }
  return result;
}
function findStartAndEnd(points, count, loop, spanGaps) {
  let start = 0;
  let end = count - 1;
  if (loop && !spanGaps) {
    while (start < count && !points[start].skip) {
      start++;
    }
  }
  while (start < count && points[start].skip) {
    start++;
  }
  start %= count;
  if (loop) {
    end += start;
  }
  while (end > start && points[end % count].skip) {
    end--;
  }
  end %= count;
  return {
    start,
    end
  };
}
function solidSegments(points, start, max, loop) {
  const count = points.length;
  const result = [];
  let last = start;
  let prev = points[start];
  let end;
  for (end = start + 1; end <= max; ++end) {
    const cur = points[end % count];
    if (cur.skip || cur.stop) {
      if (!prev.skip) {
        loop = false;
        result.push({
          start: start % count,
          end: (end - 1) % count,
          loop
        });
        start = last = cur.stop ? end : null;
      }
    } else {
      last = end;
      if (prev.skip) {
        start = end;
      }
    }
    prev = cur;
  }
  if (last !== null) {
    result.push({
      start: start % count,
      end: last % count,
      loop
    });
  }
  return result;
}
function _computeSegments(line, segmentOptions) {
  const points = line.points;
  const spanGaps = line.options.spanGaps;
  const count = points.length;
  if (!count) {
    return [];
  }
  const loop = !!line._loop;
  const { start, end } = findStartAndEnd(points, count, loop, spanGaps);
  if (spanGaps === true) {
    return splitByStyles(line, [
      {
        start,
        end,
        loop
      }
    ], points, segmentOptions);
  }
  const max = end < start ? end + count : end;
  const completeLoop = !!line._fullLoop && start === 0 && end === count - 1;
  return splitByStyles(line, solidSegments(points, start, max, completeLoop), points, segmentOptions);
}
function splitByStyles(line, segments, points, segmentOptions) {
  if (!segmentOptions || !segmentOptions.setContext || !points) {
    return segments;
  }
  return doSplitByStyles(line, segments, points, segmentOptions);
}
function doSplitByStyles(line, segments, points, segmentOptions) {
  const chartContext = line._chart.getContext();
  const baseStyle = readStyle(line.options);
  const { _datasetIndex: datasetIndex, options: { spanGaps } } = line;
  const count = points.length;
  const result = [];
  let prevStyle = baseStyle;
  let start = segments[0].start;
  let i = start;
  function addStyle(s, e, l, st) {
    const dir = spanGaps ? -1 : 1;
    if (s === e) {
      return;
    }
    s += count;
    while (points[s % count].skip) {
      s -= dir;
    }
    while (points[e % count].skip) {
      e += dir;
    }
    if (s % count !== e % count) {
      result.push({
        start: s % count,
        end: e % count,
        loop: l,
        style: st
      });
      prevStyle = st;
      start = e % count;
    }
  }
  for (const segment of segments) {
    start = spanGaps ? start : segment.start;
    let prev = points[start % count];
    let style;
    for (i = start + 1; i <= segment.end; i++) {
      const pt = points[i % count];
      style = readStyle(segmentOptions.setContext(createContext(chartContext, {
        type: "segment",
        p0: prev,
        p1: pt,
        p0DataIndex: (i - 1) % count,
        p1DataIndex: i % count,
        datasetIndex
      })));
      if (styleChanged(style, prevStyle)) {
        addStyle(start, i - 1, segment.loop, prevStyle);
      }
      prev = pt;
      prevStyle = style;
    }
    if (start < i - 1) {
      addStyle(start, i - 1, segment.loop, prevStyle);
    }
  }
  return result;
}
function readStyle(options) {
  return {
    backgroundColor: options.backgroundColor,
    borderCapStyle: options.borderCapStyle,
    borderDash: options.borderDash,
    borderDashOffset: options.borderDashOffset,
    borderJoinStyle: options.borderJoinStyle,
    borderWidth: options.borderWidth,
    borderColor: options.borderColor
  };
}
function styleChanged(style, prevStyle) {
  return prevStyle && JSON.stringify(style) !== JSON.stringify(prevStyle);
}
/*!
 * Chart.js v4.2.1
 * https://www.chartjs.org
 * (c) 2023 Chart.js Contributors
 * Released under the MIT License
 */
class Animator {
  constructor() {
    this._request = null;
    this._charts = /* @__PURE__ */ new Map();
    this._running = false;
    this._lastDate = void 0;
  }
  _notify(chart, anims, date, type) {
    const callbacks = anims.listeners[type];
    const numSteps = anims.duration;
    callbacks.forEach((fn) => fn({
      chart,
      initial: anims.initial,
      numSteps,
      currentStep: Math.min(date - anims.start, numSteps)
    }));
  }
  _refresh() {
    if (this._request) {
      return;
    }
    this._running = true;
    this._request = requestAnimFrame.call(window, () => {
      this._update();
      this._request = null;
      if (this._running) {
        this._refresh();
      }
    });
  }
  _update(date = Date.now()) {
    let remaining = 0;
    this._charts.forEach((anims, chart) => {
      if (!anims.running || !anims.items.length) {
        return;
      }
      const items = anims.items;
      let i = items.length - 1;
      let draw2 = false;
      let item;
      for (; i >= 0; --i) {
        item = items[i];
        if (item._active) {
          if (item._total > anims.duration) {
            anims.duration = item._total;
          }
          item.tick(date);
          draw2 = true;
        } else {
          items[i] = items[items.length - 1];
          items.pop();
        }
      }
      if (draw2) {
        chart.draw();
        this._notify(chart, anims, date, "progress");
      }
      if (!items.length) {
        anims.running = false;
        this._notify(chart, anims, date, "complete");
        anims.initial = false;
      }
      remaining += items.length;
    });
    this._lastDate = date;
    if (remaining === 0) {
      this._running = false;
    }
  }
  _getAnims(chart) {
    const charts = this._charts;
    let anims = charts.get(chart);
    if (!anims) {
      anims = {
        running: false,
        initial: true,
        items: [],
        listeners: {
          complete: [],
          progress: []
        }
      };
      charts.set(chart, anims);
    }
    return anims;
  }
  listen(chart, event, cb) {
    this._getAnims(chart).listeners[event].push(cb);
  }
  add(chart, items) {
    if (!items || !items.length) {
      return;
    }
    this._getAnims(chart).items.push(...items);
  }
  has(chart) {
    return this._getAnims(chart).items.length > 0;
  }
  start(chart) {
    const anims = this._charts.get(chart);
    if (!anims) {
      return;
    }
    anims.running = true;
    anims.start = Date.now();
    anims.duration = anims.items.reduce((acc, cur) => Math.max(acc, cur._duration), 0);
    this._refresh();
  }
  running(chart) {
    if (!this._running) {
      return false;
    }
    const anims = this._charts.get(chart);
    if (!anims || !anims.running || !anims.items.length) {
      return false;
    }
    return true;
  }
  stop(chart) {
    const anims = this._charts.get(chart);
    if (!anims || !anims.items.length) {
      return;
    }
    const items = anims.items;
    let i = items.length - 1;
    for (; i >= 0; --i) {
      items[i].cancel();
    }
    anims.items = [];
    this._notify(chart, anims, Date.now(), "complete");
  }
  remove(chart) {
    return this._charts.delete(chart);
  }
}
var animator = /* @__PURE__ */ new Animator();
const transparent = "transparent";
const interpolators = {
  boolean(from2, to2, factor) {
    return factor > 0.5 ? to2 : from2;
  },
  color(from2, to2, factor) {
    const c0 = color(from2 || transparent);
    const c1 = c0.valid && color(to2 || transparent);
    return c1 && c1.valid ? c1.mix(c0, factor).hexString() : to2;
  },
  number(from2, to2, factor) {
    return from2 + (to2 - from2) * factor;
  }
};
class Animation {
  constructor(cfg, target, prop, to2) {
    const currentValue = target[prop];
    to2 = resolve([
      cfg.to,
      to2,
      currentValue,
      cfg.from
    ]);
    const from2 = resolve([
      cfg.from,
      currentValue,
      to2
    ]);
    this._active = true;
    this._fn = cfg.fn || interpolators[cfg.type || typeof from2];
    this._easing = effects[cfg.easing] || effects.linear;
    this._start = Math.floor(Date.now() + (cfg.delay || 0));
    this._duration = this._total = Math.floor(cfg.duration);
    this._loop = !!cfg.loop;
    this._target = target;
    this._prop = prop;
    this._from = from2;
    this._to = to2;
    this._promises = void 0;
  }
  active() {
    return this._active;
  }
  update(cfg, to2, date) {
    if (this._active) {
      this._notify(false);
      const currentValue = this._target[this._prop];
      const elapsed = date - this._start;
      const remain = this._duration - elapsed;
      this._start = date;
      this._duration = Math.floor(Math.max(remain, cfg.duration));
      this._total += elapsed;
      this._loop = !!cfg.loop;
      this._to = resolve([
        cfg.to,
        to2,
        currentValue,
        cfg.from
      ]);
      this._from = resolve([
        cfg.from,
        currentValue,
        to2
      ]);
    }
  }
  cancel() {
    if (this._active) {
      this.tick(Date.now());
      this._active = false;
      this._notify(false);
    }
  }
  tick(date) {
    const elapsed = date - this._start;
    const duration = this._duration;
    const prop = this._prop;
    const from2 = this._from;
    const loop = this._loop;
    const to2 = this._to;
    let factor;
    this._active = from2 !== to2 && (loop || elapsed < duration);
    if (!this._active) {
      this._target[prop] = to2;
      this._notify(true);
      return;
    }
    if (elapsed < 0) {
      this._target[prop] = from2;
      return;
    }
    factor = elapsed / duration % 2;
    factor = loop && factor > 1 ? 2 - factor : factor;
    factor = this._easing(Math.min(1, Math.max(0, factor)));
    this._target[prop] = this._fn(from2, to2, factor);
  }
  wait() {
    const promises = this._promises || (this._promises = []);
    return new Promise((res, rej) => {
      promises.push({
        res,
        rej
      });
    });
  }
  _notify(resolved) {
    const method = resolved ? "res" : "rej";
    const promises = this._promises || [];
    for (let i = 0; i < promises.length; i++) {
      promises[i][method]();
    }
  }
}
class Animations {
  constructor(chart, config) {
    this._chart = chart;
    this._properties = /* @__PURE__ */ new Map();
    this.configure(config);
  }
  configure(config) {
    if (!isObject(config)) {
      return;
    }
    const animationOptions = Object.keys(defaults.animation);
    const animatedProps = this._properties;
    Object.getOwnPropertyNames(config).forEach((key) => {
      const cfg = config[key];
      if (!isObject(cfg)) {
        return;
      }
      const resolved = {};
      for (const option of animationOptions) {
        resolved[option] = cfg[option];
      }
      (isArray(cfg.properties) && cfg.properties || [
        key
      ]).forEach((prop) => {
        if (prop === key || !animatedProps.has(prop)) {
          animatedProps.set(prop, resolved);
        }
      });
    });
  }
  _animateOptions(target, values) {
    const newOptions = values.options;
    const options = resolveTargetOptions(target, newOptions);
    if (!options) {
      return [];
    }
    const animations = this._createAnimations(options, newOptions);
    if (newOptions.$shared) {
      awaitAll(target.options.$animations, newOptions).then(() => {
        target.options = newOptions;
      }, () => {
      });
    }
    return animations;
  }
  _createAnimations(target, values) {
    const animatedProps = this._properties;
    const animations = [];
    const running = target.$animations || (target.$animations = {});
    const props = Object.keys(values);
    const date = Date.now();
    let i;
    for (i = props.length - 1; i >= 0; --i) {
      const prop = props[i];
      if (prop.charAt(0) === "$") {
        continue;
      }
      if (prop === "options") {
        animations.push(...this._animateOptions(target, values));
        continue;
      }
      const value = values[prop];
      let animation = running[prop];
      const cfg = animatedProps.get(prop);
      if (animation) {
        if (cfg && animation.active()) {
          animation.update(cfg, value, date);
          continue;
        } else {
          animation.cancel();
        }
      }
      if (!cfg || !cfg.duration) {
        target[prop] = value;
        continue;
      }
      running[prop] = animation = new Animation(cfg, target, prop, value);
      animations.push(animation);
    }
    return animations;
  }
  update(target, values) {
    if (this._properties.size === 0) {
      Object.assign(target, values);
      return;
    }
    const animations = this._createAnimations(target, values);
    if (animations.length) {
      animator.add(this._chart, animations);
      return true;
    }
  }
}
function awaitAll(animations, properties) {
  const running = [];
  const keys = Object.keys(properties);
  for (let i = 0; i < keys.length; i++) {
    const anim = animations[keys[i]];
    if (anim && anim.active()) {
      running.push(anim.wait());
    }
  }
  return Promise.all(running);
}
function resolveTargetOptions(target, newOptions) {
  if (!newOptions) {
    return;
  }
  let options = target.options;
  if (!options) {
    target.options = newOptions;
    return;
  }
  if (options.$shared) {
    target.options = options = Object.assign({}, options, {
      $shared: false,
      $animations: {}
    });
  }
  return options;
}
function scaleClip(scale, allowedOverflow) {
  const opts = scale && scale.options || {};
  const reverse = opts.reverse;
  const min = opts.min === void 0 ? allowedOverflow : 0;
  const max = opts.max === void 0 ? allowedOverflow : 0;
  return {
    start: reverse ? max : min,
    end: reverse ? min : max
  };
}
function defaultClip(xScale, yScale, allowedOverflow) {
  if (allowedOverflow === false) {
    return false;
  }
  const x = scaleClip(xScale, allowedOverflow);
  const y = scaleClip(yScale, allowedOverflow);
  return {
    top: y.end,
    right: x.end,
    bottom: y.start,
    left: x.start
  };
}
function toClip(value) {
  let t, r, b, l;
  if (isObject(value)) {
    t = value.top;
    r = value.right;
    b = value.bottom;
    l = value.left;
  } else {
    t = r = b = l = value;
  }
  return {
    top: t,
    right: r,
    bottom: b,
    left: l,
    disabled: value === false
  };
}
function getSortedDatasetIndices(chart, filterVisible) {
  const keys = [];
  const metasets = chart._getSortedDatasetMetas(filterVisible);
  let i, ilen;
  for (i = 0, ilen = metasets.length; i < ilen; ++i) {
    keys.push(metasets[i].index);
  }
  return keys;
}
function applyStack(stack, value, dsIndex, options = {}) {
  const keys = stack.keys;
  const singleMode = options.mode === "single";
  let i, ilen, datasetIndex, otherValue;
  if (value === null) {
    return;
  }
  for (i = 0, ilen = keys.length; i < ilen; ++i) {
    datasetIndex = +keys[i];
    if (datasetIndex === dsIndex) {
      if (options.all) {
        continue;
      }
      break;
    }
    otherValue = stack.values[datasetIndex];
    if (isNumberFinite(otherValue) && (singleMode || value === 0 || sign(value) === sign(otherValue))) {
      value += otherValue;
    }
  }
  return value;
}
function convertObjectDataToArray(data) {
  const keys = Object.keys(data);
  const adata = new Array(keys.length);
  let i, ilen, key;
  for (i = 0, ilen = keys.length; i < ilen; ++i) {
    key = keys[i];
    adata[i] = {
      x: key,
      y: data[key]
    };
  }
  return adata;
}
function isStacked(scale, meta) {
  const stacked = scale && scale.options.stacked;
  return stacked || stacked === void 0 && meta.stack !== void 0;
}
function getStackKey(indexScale, valueScale, meta) {
  return `${indexScale.id}.${valueScale.id}.${meta.stack || meta.type}`;
}
function getUserBounds(scale) {
  const { min, max, minDefined, maxDefined } = scale.getUserBounds();
  return {
    min: minDefined ? min : Number.NEGATIVE_INFINITY,
    max: maxDefined ? max : Number.POSITIVE_INFINITY
  };
}
function getOrCreateStack(stacks, stackKey, indexValue) {
  const subStack = stacks[stackKey] || (stacks[stackKey] = {});
  return subStack[indexValue] || (subStack[indexValue] = {});
}
function getLastIndexInStack(stack, vScale, positive, type) {
  for (const meta of vScale.getMatchingVisibleMetas(type).reverse()) {
    const value = stack[meta.index];
    if (positive && value > 0 || !positive && value < 0) {
      return meta.index;
    }
  }
  return null;
}
function updateStacks(controller, parsed) {
  const { chart, _cachedMeta: meta } = controller;
  const stacks = chart._stacks || (chart._stacks = {});
  const { iScale, vScale, index: datasetIndex } = meta;
  const iAxis = iScale.axis;
  const vAxis = vScale.axis;
  const key = getStackKey(iScale, vScale, meta);
  const ilen = parsed.length;
  let stack;
  for (let i = 0; i < ilen; ++i) {
    const item = parsed[i];
    const { [iAxis]: index2, [vAxis]: value } = item;
    const itemStacks = item._stacks || (item._stacks = {});
    stack = itemStacks[vAxis] = getOrCreateStack(stacks, key, index2);
    stack[datasetIndex] = value;
    stack._top = getLastIndexInStack(stack, vScale, true, meta.type);
    stack._bottom = getLastIndexInStack(stack, vScale, false, meta.type);
    const visualValues = stack._visualValues || (stack._visualValues = {});
    visualValues[datasetIndex] = value;
  }
}
function getFirstScaleId(chart, axis) {
  const scales2 = chart.scales;
  return Object.keys(scales2).filter((key) => scales2[key].axis === axis).shift();
}
function createDatasetContext(parent, index2) {
  return createContext(parent, {
    active: false,
    dataset: void 0,
    datasetIndex: index2,
    index: index2,
    mode: "default",
    type: "dataset"
  });
}
function createDataContext(parent, index2, element) {
  return createContext(parent, {
    active: false,
    dataIndex: index2,
    parsed: void 0,
    raw: void 0,
    element,
    index: index2,
    mode: "default",
    type: "data"
  });
}
function clearStacks(meta, items) {
  const datasetIndex = meta.controller.index;
  const axis = meta.vScale && meta.vScale.axis;
  if (!axis) {
    return;
  }
  items = items || meta._parsed;
  for (const parsed of items) {
    const stacks = parsed._stacks;
    if (!stacks || stacks[axis] === void 0 || stacks[axis][datasetIndex] === void 0) {
      return;
    }
    delete stacks[axis][datasetIndex];
    if (stacks[axis]._visualValues !== void 0 && stacks[axis]._visualValues[datasetIndex] !== void 0) {
      delete stacks[axis]._visualValues[datasetIndex];
    }
  }
}
const isDirectUpdateMode = (mode) => mode === "reset" || mode === "none";
const cloneIfNotShared = (cached, shared) => shared ? cached : Object.assign({}, cached);
const createStack = (canStack, meta, chart) => canStack && !meta.hidden && meta._stacked && {
  keys: getSortedDatasetIndices(chart, true),
  values: null
};
class DatasetController {
  constructor(chart, datasetIndex) {
    this.chart = chart;
    this._ctx = chart.ctx;
    this.index = datasetIndex;
    this._cachedDataOpts = {};
    this._cachedMeta = this.getMeta();
    this._type = this._cachedMeta.type;
    this.options = void 0;
    this._parsing = false;
    this._data = void 0;
    this._objectData = void 0;
    this._sharedOptions = void 0;
    this._drawStart = void 0;
    this._drawCount = void 0;
    this.enableOptionSharing = false;
    this.supportsDecimation = false;
    this.$context = void 0;
    this._syncList = [];
    this.datasetElementType = new.target.datasetElementType;
    this.dataElementType = new.target.dataElementType;
    this.initialize();
  }
  initialize() {
    const meta = this._cachedMeta;
    this.configure();
    this.linkScales();
    meta._stacked = isStacked(meta.vScale, meta);
    this.addElements();
    if (this.options.fill && !this.chart.isPluginEnabled("filler")) {
      console.warn("Tried to use the 'fill' option without the 'Filler' plugin enabled. Please import and register the 'Filler' plugin and make sure it is not disabled in the options");
    }
  }
  updateIndex(datasetIndex) {
    if (this.index !== datasetIndex) {
      clearStacks(this._cachedMeta);
    }
    this.index = datasetIndex;
  }
  linkScales() {
    const chart = this.chart;
    const meta = this._cachedMeta;
    const dataset = this.getDataset();
    const chooseId = (axis, x, y, r) => axis === "x" ? x : axis === "r" ? r : y;
    const xid = meta.xAxisID = valueOrDefault(dataset.xAxisID, getFirstScaleId(chart, "x"));
    const yid = meta.yAxisID = valueOrDefault(dataset.yAxisID, getFirstScaleId(chart, "y"));
    const rid = meta.rAxisID = valueOrDefault(dataset.rAxisID, getFirstScaleId(chart, "r"));
    const indexAxis = meta.indexAxis;
    const iid = meta.iAxisID = chooseId(indexAxis, xid, yid, rid);
    const vid = meta.vAxisID = chooseId(indexAxis, yid, xid, rid);
    meta.xScale = this.getScaleForId(xid);
    meta.yScale = this.getScaleForId(yid);
    meta.rScale = this.getScaleForId(rid);
    meta.iScale = this.getScaleForId(iid);
    meta.vScale = this.getScaleForId(vid);
  }
  getDataset() {
    return this.chart.data.datasets[this.index];
  }
  getMeta() {
    return this.chart.getDatasetMeta(this.index);
  }
  getScaleForId(scaleID) {
    return this.chart.scales[scaleID];
  }
  _getOtherScale(scale) {
    const meta = this._cachedMeta;
    return scale === meta.iScale ? meta.vScale : meta.iScale;
  }
  reset() {
    this._update("reset");
  }
  _destroy() {
    const meta = this._cachedMeta;
    if (this._data) {
      unlistenArrayEvents(this._data, this);
    }
    if (meta._stacked) {
      clearStacks(meta);
    }
  }
  _dataCheck() {
    const dataset = this.getDataset();
    const data = dataset.data || (dataset.data = []);
    const _data = this._data;
    if (isObject(data)) {
      this._data = convertObjectDataToArray(data);
    } else if (_data !== data) {
      if (_data) {
        unlistenArrayEvents(_data, this);
        const meta = this._cachedMeta;
        clearStacks(meta);
        meta._parsed = [];
      }
      if (data && Object.isExtensible(data)) {
        listenArrayEvents(data, this);
      }
      this._syncList = [];
      this._data = data;
    }
  }
  addElements() {
    const meta = this._cachedMeta;
    this._dataCheck();
    if (this.datasetElementType) {
      meta.dataset = new this.datasetElementType();
    }
  }
  buildOrUpdateElements(resetNewElements) {
    const meta = this._cachedMeta;
    const dataset = this.getDataset();
    let stackChanged = false;
    this._dataCheck();
    const oldStacked = meta._stacked;
    meta._stacked = isStacked(meta.vScale, meta);
    if (meta.stack !== dataset.stack) {
      stackChanged = true;
      clearStacks(meta);
      meta.stack = dataset.stack;
    }
    this._resyncElements(resetNewElements);
    if (stackChanged || oldStacked !== meta._stacked) {
      updateStacks(this, meta._parsed);
    }
  }
  configure() {
    const config = this.chart.config;
    const scopeKeys = config.datasetScopeKeys(this._type);
    const scopes = config.getOptionScopes(this.getDataset(), scopeKeys, true);
    this.options = config.createResolver(scopes, this.getContext());
    this._parsing = this.options.parsing;
    this._cachedDataOpts = {};
  }
  parse(start, count) {
    const { _cachedMeta: meta, _data: data } = this;
    const { iScale, _stacked } = meta;
    const iAxis = iScale.axis;
    let sorted = start === 0 && count === data.length ? true : meta._sorted;
    let prev = start > 0 && meta._parsed[start - 1];
    let i, cur, parsed;
    if (this._parsing === false) {
      meta._parsed = data;
      meta._sorted = true;
      parsed = data;
    } else {
      if (isArray(data[start])) {
        parsed = this.parseArrayData(meta, data, start, count);
      } else if (isObject(data[start])) {
        parsed = this.parseObjectData(meta, data, start, count);
      } else {
        parsed = this.parsePrimitiveData(meta, data, start, count);
      }
      const isNotInOrderComparedToPrev = () => cur[iAxis] === null || prev && cur[iAxis] < prev[iAxis];
      for (i = 0; i < count; ++i) {
        meta._parsed[i + start] = cur = parsed[i];
        if (sorted) {
          if (isNotInOrderComparedToPrev()) {
            sorted = false;
          }
          prev = cur;
        }
      }
      meta._sorted = sorted;
    }
    if (_stacked) {
      updateStacks(this, parsed);
    }
  }
  parsePrimitiveData(meta, data, start, count) {
    const { iScale, vScale } = meta;
    const iAxis = iScale.axis;
    const vAxis = vScale.axis;
    const labels = iScale.getLabels();
    const singleScale = iScale === vScale;
    const parsed = new Array(count);
    let i, ilen, index2;
    for (i = 0, ilen = count; i < ilen; ++i) {
      index2 = i + start;
      parsed[i] = {
        [iAxis]: singleScale || iScale.parse(labels[index2], index2),
        [vAxis]: vScale.parse(data[index2], index2)
      };
    }
    return parsed;
  }
  parseArrayData(meta, data, start, count) {
    const { xScale, yScale } = meta;
    const parsed = new Array(count);
    let i, ilen, index2, item;
    for (i = 0, ilen = count; i < ilen; ++i) {
      index2 = i + start;
      item = data[index2];
      parsed[i] = {
        x: xScale.parse(item[0], index2),
        y: yScale.parse(item[1], index2)
      };
    }
    return parsed;
  }
  parseObjectData(meta, data, start, count) {
    const { xScale, yScale } = meta;
    const { xAxisKey = "x", yAxisKey = "y" } = this._parsing;
    const parsed = new Array(count);
    let i, ilen, index2, item;
    for (i = 0, ilen = count; i < ilen; ++i) {
      index2 = i + start;
      item = data[index2];
      parsed[i] = {
        x: xScale.parse(resolveObjectKey(item, xAxisKey), index2),
        y: yScale.parse(resolveObjectKey(item, yAxisKey), index2)
      };
    }
    return parsed;
  }
  getParsed(index2) {
    return this._cachedMeta._parsed[index2];
  }
  getDataElement(index2) {
    return this._cachedMeta.data[index2];
  }
  applyStack(scale, parsed, mode) {
    const chart = this.chart;
    const meta = this._cachedMeta;
    const value = parsed[scale.axis];
    const stack = {
      keys: getSortedDatasetIndices(chart, true),
      values: parsed._stacks[scale.axis]._visualValues
    };
    return applyStack(stack, value, meta.index, {
      mode
    });
  }
  updateRangeFromParsed(range, scale, parsed, stack) {
    const parsedValue = parsed[scale.axis];
    let value = parsedValue === null ? NaN : parsedValue;
    const values = stack && parsed._stacks[scale.axis];
    if (stack && values) {
      stack.values = values;
      value = applyStack(stack, parsedValue, this._cachedMeta.index);
    }
    range.min = Math.min(range.min, value);
    range.max = Math.max(range.max, value);
  }
  getMinMax(scale, canStack) {
    const meta = this._cachedMeta;
    const _parsed = meta._parsed;
    const sorted = meta._sorted && scale === meta.iScale;
    const ilen = _parsed.length;
    const otherScale = this._getOtherScale(scale);
    const stack = createStack(canStack, meta, this.chart);
    const range = {
      min: Number.POSITIVE_INFINITY,
      max: Number.NEGATIVE_INFINITY
    };
    const { min: otherMin, max: otherMax } = getUserBounds(otherScale);
    let i, parsed;
    function _skip() {
      parsed = _parsed[i];
      const otherValue = parsed[otherScale.axis];
      return !isNumberFinite(parsed[scale.axis]) || otherMin > otherValue || otherMax < otherValue;
    }
    for (i = 0; i < ilen; ++i) {
      if (_skip()) {
        continue;
      }
      this.updateRangeFromParsed(range, scale, parsed, stack);
      if (sorted) {
        break;
      }
    }
    if (sorted) {
      for (i = ilen - 1; i >= 0; --i) {
        if (_skip()) {
          continue;
        }
        this.updateRangeFromParsed(range, scale, parsed, stack);
        break;
      }
    }
    return range;
  }
  getAllParsedValues(scale) {
    const parsed = this._cachedMeta._parsed;
    const values = [];
    let i, ilen, value;
    for (i = 0, ilen = parsed.length; i < ilen; ++i) {
      value = parsed[i][scale.axis];
      if (isNumberFinite(value)) {
        values.push(value);
      }
    }
    return values;
  }
  getMaxOverflow() {
    return false;
  }
  getLabelAndValue(index2) {
    const meta = this._cachedMeta;
    const iScale = meta.iScale;
    const vScale = meta.vScale;
    const parsed = this.getParsed(index2);
    return {
      label: iScale ? "" + iScale.getLabelForValue(parsed[iScale.axis]) : "",
      value: vScale ? "" + vScale.getLabelForValue(parsed[vScale.axis]) : ""
    };
  }
  _update(mode) {
    const meta = this._cachedMeta;
    this.update(mode || "default");
    meta._clip = toClip(valueOrDefault(this.options.clip, defaultClip(meta.xScale, meta.yScale, this.getMaxOverflow())));
  }
  update(mode) {
  }
  draw() {
    const ctx = this._ctx;
    const chart = this.chart;
    const meta = this._cachedMeta;
    const elements2 = meta.data || [];
    const area = chart.chartArea;
    const active = [];
    const start = this._drawStart || 0;
    const count = this._drawCount || elements2.length - start;
    const drawActiveElementsOnTop = this.options.drawActiveElementsOnTop;
    let i;
    if (meta.dataset) {
      meta.dataset.draw(ctx, area, start, count);
    }
    for (i = start; i < start + count; ++i) {
      const element = elements2[i];
      if (element.hidden) {
        continue;
      }
      if (element.active && drawActiveElementsOnTop) {
        active.push(element);
      } else {
        element.draw(ctx, area);
      }
    }
    for (i = 0; i < active.length; ++i) {
      active[i].draw(ctx, area);
    }
  }
  getStyle(index2, active) {
    const mode = active ? "active" : "default";
    return index2 === void 0 && this._cachedMeta.dataset ? this.resolveDatasetElementOptions(mode) : this.resolveDataElementOptions(index2 || 0, mode);
  }
  getContext(index2, active, mode) {
    const dataset = this.getDataset();
    let context;
    if (index2 >= 0 && index2 < this._cachedMeta.data.length) {
      const element = this._cachedMeta.data[index2];
      context = element.$context || (element.$context = createDataContext(this.getContext(), index2, element));
      context.parsed = this.getParsed(index2);
      context.raw = dataset.data[index2];
      context.index = context.dataIndex = index2;
    } else {
      context = this.$context || (this.$context = createDatasetContext(this.chart.getContext(), this.index));
      context.dataset = dataset;
      context.index = context.datasetIndex = this.index;
    }
    context.active = !!active;
    context.mode = mode;
    return context;
  }
  resolveDatasetElementOptions(mode) {
    return this._resolveElementOptions(this.datasetElementType.id, mode);
  }
  resolveDataElementOptions(index2, mode) {
    return this._resolveElementOptions(this.dataElementType.id, mode, index2);
  }
  _resolveElementOptions(elementType, mode = "default", index2) {
    const active = mode === "active";
    const cache = this._cachedDataOpts;
    const cacheKey = elementType + "-" + mode;
    const cached = cache[cacheKey];
    const sharing = this.enableOptionSharing && defined(index2);
    if (cached) {
      return cloneIfNotShared(cached, sharing);
    }
    const config = this.chart.config;
    const scopeKeys = config.datasetElementScopeKeys(this._type, elementType);
    const prefixes = active ? [
      `${elementType}Hover`,
      "hover",
      elementType,
      ""
    ] : [
      elementType,
      ""
    ];
    const scopes = config.getOptionScopes(this.getDataset(), scopeKeys);
    const names2 = Object.keys(defaults.elements[elementType]);
    const context = () => this.getContext(index2, active, mode);
    const values = config.resolveNamedOptions(scopes, names2, context, prefixes);
    if (values.$shared) {
      values.$shared = sharing;
      cache[cacheKey] = Object.freeze(cloneIfNotShared(values, sharing));
    }
    return values;
  }
  _resolveAnimations(index2, transition, active) {
    const chart = this.chart;
    const cache = this._cachedDataOpts;
    const cacheKey = `animation-${transition}`;
    const cached = cache[cacheKey];
    if (cached) {
      return cached;
    }
    let options;
    if (chart.options.animation !== false) {
      const config = this.chart.config;
      const scopeKeys = config.datasetAnimationScopeKeys(this._type, transition);
      const scopes = config.getOptionScopes(this.getDataset(), scopeKeys);
      options = config.createResolver(scopes, this.getContext(index2, active, transition));
    }
    const animations = new Animations(chart, options && options.animations);
    if (options && options._cacheable) {
      cache[cacheKey] = Object.freeze(animations);
    }
    return animations;
  }
  getSharedOptions(options) {
    if (!options.$shared) {
      return;
    }
    return this._sharedOptions || (this._sharedOptions = Object.assign({}, options));
  }
  includeOptions(mode, sharedOptions) {
    return !sharedOptions || isDirectUpdateMode(mode) || this.chart._animationsDisabled;
  }
  _getSharedOptions(start, mode) {
    const firstOpts = this.resolveDataElementOptions(start, mode);
    const previouslySharedOptions = this._sharedOptions;
    const sharedOptions = this.getSharedOptions(firstOpts);
    const includeOptions = this.includeOptions(mode, sharedOptions) || sharedOptions !== previouslySharedOptions;
    this.updateSharedOptions(sharedOptions, mode, firstOpts);
    return {
      sharedOptions,
      includeOptions
    };
  }
  updateElement(element, index2, properties, mode) {
    if (isDirectUpdateMode(mode)) {
      Object.assign(element, properties);
    } else {
      this._resolveAnimations(index2, mode).update(element, properties);
    }
  }
  updateSharedOptions(sharedOptions, mode, newOptions) {
    if (sharedOptions && !isDirectUpdateMode(mode)) {
      this._resolveAnimations(void 0, mode).update(sharedOptions, newOptions);
    }
  }
  _setStyle(element, index2, mode, active) {
    element.active = active;
    const options = this.getStyle(index2, active);
    this._resolveAnimations(index2, mode, active).update(element, {
      options: !active && this.getSharedOptions(options) || options
    });
  }
  removeHoverStyle(element, datasetIndex, index2) {
    this._setStyle(element, index2, "active", false);
  }
  setHoverStyle(element, datasetIndex, index2) {
    this._setStyle(element, index2, "active", true);
  }
  _removeDatasetHoverStyle() {
    const element = this._cachedMeta.dataset;
    if (element) {
      this._setStyle(element, void 0, "active", false);
    }
  }
  _setDatasetHoverStyle() {
    const element = this._cachedMeta.dataset;
    if (element) {
      this._setStyle(element, void 0, "active", true);
    }
  }
  _resyncElements(resetNewElements) {
    const data = this._data;
    const elements2 = this._cachedMeta.data;
    for (const [method, arg1, arg2] of this._syncList) {
      this[method](arg1, arg2);
    }
    this._syncList = [];
    const numMeta = elements2.length;
    const numData = data.length;
    const count = Math.min(numData, numMeta);
    if (count) {
      this.parse(0, count);
    }
    if (numData > numMeta) {
      this._insertElements(numMeta, numData - numMeta, resetNewElements);
    } else if (numData < numMeta) {
      this._removeElements(numData, numMeta - numData);
    }
  }
  _insertElements(start, count, resetNewElements = true) {
    const meta = this._cachedMeta;
    const data = meta.data;
    const end = start + count;
    let i;
    const move = (arr) => {
      arr.length += count;
      for (i = arr.length - 1; i >= end; i--) {
        arr[i] = arr[i - count];
      }
    };
    move(data);
    for (i = start; i < end; ++i) {
      data[i] = new this.dataElementType();
    }
    if (this._parsing) {
      move(meta._parsed);
    }
    this.parse(start, count);
    if (resetNewElements) {
      this.updateElements(data, start, count, "reset");
    }
  }
  updateElements(element, start, count, mode) {
  }
  _removeElements(start, count) {
    const meta = this._cachedMeta;
    if (this._parsing) {
      const removed = meta._parsed.splice(start, count);
      if (meta._stacked) {
        clearStacks(meta, removed);
      }
    }
    meta.data.splice(start, count);
  }
  _sync(args) {
    if (this._parsing) {
      this._syncList.push(args);
    } else {
      const [method, arg1, arg2] = args;
      this[method](arg1, arg2);
    }
    this.chart._dataChanges.push([
      this.index,
      ...args
    ]);
  }
  _onDataPush() {
    const count = arguments.length;
    this._sync([
      "_insertElements",
      this.getDataset().data.length - count,
      count
    ]);
  }
  _onDataPop() {
    this._sync([
      "_removeElements",
      this._cachedMeta.data.length - 1,
      1
    ]);
  }
  _onDataShift() {
    this._sync([
      "_removeElements",
      0,
      1
    ]);
  }
  _onDataSplice(start, count) {
    if (count) {
      this._sync([
        "_removeElements",
        start,
        count
      ]);
    }
    const newCount = arguments.length - 2;
    if (newCount) {
      this._sync([
        "_insertElements",
        start,
        newCount
      ]);
    }
  }
  _onDataUnshift() {
    this._sync([
      "_insertElements",
      0,
      arguments.length
    ]);
  }
}
__publicField(DatasetController, "defaults", {});
__publicField(DatasetController, "datasetElementType", null);
__publicField(DatasetController, "dataElementType", null);
function getAllScaleValues(scale, type) {
  if (!scale._cache.$bar) {
    const visibleMetas = scale.getMatchingVisibleMetas(type);
    let values = [];
    for (let i = 0, ilen = visibleMetas.length; i < ilen; i++) {
      values = values.concat(visibleMetas[i].controller.getAllParsedValues(scale));
    }
    scale._cache.$bar = _arrayUnique(values.sort((a, b) => a - b));
  }
  return scale._cache.$bar;
}
function computeMinSampleSize(meta) {
  const scale = meta.iScale;
  const values = getAllScaleValues(scale, meta.type);
  let min = scale._length;
  let i, ilen, curr, prev;
  const updateMinAndPrev = () => {
    if (curr === 32767 || curr === -32768) {
      return;
    }
    if (defined(prev)) {
      min = Math.min(min, Math.abs(curr - prev) || min);
    }
    prev = curr;
  };
  for (i = 0, ilen = values.length; i < ilen; ++i) {
    curr = scale.getPixelForValue(values[i]);
    updateMinAndPrev();
  }
  prev = void 0;
  for (i = 0, ilen = scale.ticks.length; i < ilen; ++i) {
    curr = scale.getPixelForTick(i);
    updateMinAndPrev();
  }
  return min;
}
function computeFitCategoryTraits(index2, ruler, options, stackCount) {
  const thickness = options.barThickness;
  let size, ratio;
  if (isNullOrUndef(thickness)) {
    size = ruler.min * options.categoryPercentage;
    ratio = options.barPercentage;
  } else {
    size = thickness * stackCount;
    ratio = 1;
  }
  return {
    chunk: size / stackCount,
    ratio,
    start: ruler.pixels[index2] - size / 2
  };
}
function computeFlexCategoryTraits(index2, ruler, options, stackCount) {
  const pixels = ruler.pixels;
  const curr = pixels[index2];
  let prev = index2 > 0 ? pixels[index2 - 1] : null;
  let next = index2 < pixels.length - 1 ? pixels[index2 + 1] : null;
  const percent = options.categoryPercentage;
  if (prev === null) {
    prev = curr - (next === null ? ruler.end - ruler.start : next - curr);
  }
  if (next === null) {
    next = curr + curr - prev;
  }
  const start = curr - (curr - Math.min(prev, next)) / 2 * percent;
  const size = Math.abs(next - prev) / 2 * percent;
  return {
    chunk: size / stackCount,
    ratio: options.barPercentage,
    start
  };
}
function parseFloatBar(entry, item, vScale, i) {
  const startValue = vScale.parse(entry[0], i);
  const endValue = vScale.parse(entry[1], i);
  const min = Math.min(startValue, endValue);
  const max = Math.max(startValue, endValue);
  let barStart = min;
  let barEnd = max;
  if (Math.abs(min) > Math.abs(max)) {
    barStart = max;
    barEnd = min;
  }
  item[vScale.axis] = barEnd;
  item._custom = {
    barStart,
    barEnd,
    start: startValue,
    end: endValue,
    min,
    max
  };
}
function parseValue(entry, item, vScale, i) {
  if (isArray(entry)) {
    parseFloatBar(entry, item, vScale, i);
  } else {
    item[vScale.axis] = vScale.parse(entry, i);
  }
  return item;
}
function parseArrayOrPrimitive(meta, data, start, count) {
  const iScale = meta.iScale;
  const vScale = meta.vScale;
  const labels = iScale.getLabels();
  const singleScale = iScale === vScale;
  const parsed = [];
  let i, ilen, item, entry;
  for (i = start, ilen = start + count; i < ilen; ++i) {
    entry = data[i];
    item = {};
    item[iScale.axis] = singleScale || iScale.parse(labels[i], i);
    parsed.push(parseValue(entry, item, vScale, i));
  }
  return parsed;
}
function isFloatBar(custom) {
  return custom && custom.barStart !== void 0 && custom.barEnd !== void 0;
}
function barSign(size, vScale, actualBase) {
  if (size !== 0) {
    return sign(size);
  }
  return (vScale.isHorizontal() ? 1 : -1) * (vScale.min >= actualBase ? 1 : -1);
}
function borderProps(properties) {
  let reverse, start, end, top, bottom;
  if (properties.horizontal) {
    reverse = properties.base > properties.x;
    start = "left";
    end = "right";
  } else {
    reverse = properties.base < properties.y;
    start = "bottom";
    end = "top";
  }
  if (reverse) {
    top = "end";
    bottom = "start";
  } else {
    top = "start";
    bottom = "end";
  }
  return {
    start,
    end,
    reverse,
    top,
    bottom
  };
}
function setBorderSkipped(properties, options, stack, index2) {
  let edge = options.borderSkipped;
  const res = {};
  if (!edge) {
    properties.borderSkipped = res;
    return;
  }
  if (edge === true) {
    properties.borderSkipped = {
      top: true,
      right: true,
      bottom: true,
      left: true
    };
    return;
  }
  const { start, end, reverse, top, bottom } = borderProps(properties);
  if (edge === "middle" && stack) {
    properties.enableBorderRadius = true;
    if ((stack._top || 0) === index2) {
      edge = top;
    } else if ((stack._bottom || 0) === index2) {
      edge = bottom;
    } else {
      res[parseEdge(bottom, start, end, reverse)] = true;
      edge = top;
    }
  }
  res[parseEdge(edge, start, end, reverse)] = true;
  properties.borderSkipped = res;
}
function parseEdge(edge, a, b, reverse) {
  if (reverse) {
    edge = swap(edge, a, b);
    edge = startEnd(edge, b, a);
  } else {
    edge = startEnd(edge, a, b);
  }
  return edge;
}
function swap(orig, v1, v2) {
  return orig === v1 ? v2 : orig === v2 ? v1 : orig;
}
function startEnd(v, start, end) {
  return v === "start" ? start : v === "end" ? end : v;
}
function setInflateAmount(properties, { inflateAmount }, ratio) {
  properties.inflateAmount = inflateAmount === "auto" ? ratio === 1 ? 0.33 : 0 : inflateAmount;
}
class BarController extends DatasetController {
  parsePrimitiveData(meta, data, start, count) {
    return parseArrayOrPrimitive(meta, data, start, count);
  }
  parseArrayData(meta, data, start, count) {
    return parseArrayOrPrimitive(meta, data, start, count);
  }
  parseObjectData(meta, data, start, count) {
    const { iScale, vScale } = meta;
    const { xAxisKey = "x", yAxisKey = "y" } = this._parsing;
    const iAxisKey = iScale.axis === "x" ? xAxisKey : yAxisKey;
    const vAxisKey = vScale.axis === "x" ? xAxisKey : yAxisKey;
    const parsed = [];
    let i, ilen, item, obj;
    for (i = start, ilen = start + count; i < ilen; ++i) {
      obj = data[i];
      item = {};
      item[iScale.axis] = iScale.parse(resolveObjectKey(obj, iAxisKey), i);
      parsed.push(parseValue(resolveObjectKey(obj, vAxisKey), item, vScale, i));
    }
    return parsed;
  }
  updateRangeFromParsed(range, scale, parsed, stack) {
    super.updateRangeFromParsed(range, scale, parsed, stack);
    const custom = parsed._custom;
    if (custom && scale === this._cachedMeta.vScale) {
      range.min = Math.min(range.min, custom.min);
      range.max = Math.max(range.max, custom.max);
    }
  }
  getMaxOverflow() {
    return 0;
  }
  getLabelAndValue(index2) {
    const meta = this._cachedMeta;
    const { iScale, vScale } = meta;
    const parsed = this.getParsed(index2);
    const custom = parsed._custom;
    const value = isFloatBar(custom) ? "[" + custom.start + ", " + custom.end + "]" : "" + vScale.getLabelForValue(parsed[vScale.axis]);
    return {
      label: "" + iScale.getLabelForValue(parsed[iScale.axis]),
      value
    };
  }
  initialize() {
    this.enableOptionSharing = true;
    super.initialize();
    const meta = this._cachedMeta;
    meta.stack = this.getDataset().stack;
  }
  update(mode) {
    const meta = this._cachedMeta;
    this.updateElements(meta.data, 0, meta.data.length, mode);
  }
  updateElements(bars, start, count, mode) {
    const reset2 = mode === "reset";
    const { index: index2, _cachedMeta: { vScale } } = this;
    const base = vScale.getBasePixel();
    const horizontal = vScale.isHorizontal();
    const ruler = this._getRuler();
    const { sharedOptions, includeOptions } = this._getSharedOptions(start, mode);
    for (let i = start; i < start + count; i++) {
      const parsed = this.getParsed(i);
      const vpixels = reset2 || isNullOrUndef(parsed[vScale.axis]) ? {
        base,
        head: base
      } : this._calculateBarValuePixels(i);
      const ipixels = this._calculateBarIndexPixels(i, ruler);
      const stack = (parsed._stacks || {})[vScale.axis];
      const properties = {
        horizontal,
        base: vpixels.base,
        enableBorderRadius: !stack || isFloatBar(parsed._custom) || index2 === stack._top || index2 === stack._bottom,
        x: horizontal ? vpixels.head : ipixels.center,
        y: horizontal ? ipixels.center : vpixels.head,
        height: horizontal ? ipixels.size : Math.abs(vpixels.size),
        width: horizontal ? Math.abs(vpixels.size) : ipixels.size
      };
      if (includeOptions) {
        properties.options = sharedOptions || this.resolveDataElementOptions(i, bars[i].active ? "active" : mode);
      }
      const options = properties.options || bars[i].options;
      setBorderSkipped(properties, options, stack, index2);
      setInflateAmount(properties, options, ruler.ratio);
      this.updateElement(bars[i], i, properties, mode);
    }
  }
  _getStacks(last, dataIndex) {
    const { iScale } = this._cachedMeta;
    const metasets = iScale.getMatchingVisibleMetas(this._type).filter((meta) => meta.controller.options.grouped);
    const stacked = iScale.options.stacked;
    const stacks = [];
    const skipNull = (meta) => {
      const parsed = meta.controller.getParsed(dataIndex);
      const val = parsed && parsed[meta.vScale.axis];
      if (isNullOrUndef(val) || isNaN(val)) {
        return true;
      }
    };
    for (const meta of metasets) {
      if (dataIndex !== void 0 && skipNull(meta)) {
        continue;
      }
      if (stacked === false || stacks.indexOf(meta.stack) === -1 || stacked === void 0 && meta.stack === void 0) {
        stacks.push(meta.stack);
      }
      if (meta.index === last) {
        break;
      }
    }
    if (!stacks.length) {
      stacks.push(void 0);
    }
    return stacks;
  }
  _getStackCount(index2) {
    return this._getStacks(void 0, index2).length;
  }
  _getStackIndex(datasetIndex, name2, dataIndex) {
    const stacks = this._getStacks(datasetIndex, dataIndex);
    const index2 = name2 !== void 0 ? stacks.indexOf(name2) : -1;
    return index2 === -1 ? stacks.length - 1 : index2;
  }
  _getRuler() {
    const opts = this.options;
    const meta = this._cachedMeta;
    const iScale = meta.iScale;
    const pixels = [];
    let i, ilen;
    for (i = 0, ilen = meta.data.length; i < ilen; ++i) {
      pixels.push(iScale.getPixelForValue(this.getParsed(i)[iScale.axis], i));
    }
    const barThickness = opts.barThickness;
    const min = barThickness || computeMinSampleSize(meta);
    return {
      min,
      pixels,
      start: iScale._startPixel,
      end: iScale._endPixel,
      stackCount: this._getStackCount(),
      scale: iScale,
      grouped: opts.grouped,
      ratio: barThickness ? 1 : opts.categoryPercentage * opts.barPercentage
    };
  }
  _calculateBarValuePixels(index2) {
    const { _cachedMeta: { vScale, _stacked, index: datasetIndex }, options: { base: baseValue, minBarLength } } = this;
    const actualBase = baseValue || 0;
    const parsed = this.getParsed(index2);
    const custom = parsed._custom;
    const floating = isFloatBar(custom);
    let value = parsed[vScale.axis];
    let start = 0;
    let length = _stacked ? this.applyStack(vScale, parsed, _stacked) : value;
    let head, size;
    if (length !== value) {
      start = length - value;
      length = value;
    }
    if (floating) {
      value = custom.barStart;
      length = custom.barEnd - custom.barStart;
      if (value !== 0 && sign(value) !== sign(custom.barEnd)) {
        start = 0;
      }
      start += value;
    }
    const startValue = !isNullOrUndef(baseValue) && !floating ? baseValue : start;
    let base = vScale.getPixelForValue(startValue);
    if (this.chart.getDataVisibility(index2)) {
      head = vScale.getPixelForValue(start + length);
    } else {
      head = base;
    }
    size = head - base;
    if (Math.abs(size) < minBarLength) {
      size = barSign(size, vScale, actualBase) * minBarLength;
      if (value === actualBase) {
        base -= size / 2;
      }
      const startPixel = vScale.getPixelForDecimal(0);
      const endPixel = vScale.getPixelForDecimal(1);
      const min = Math.min(startPixel, endPixel);
      const max = Math.max(startPixel, endPixel);
      base = Math.max(Math.min(base, max), min);
      head = base + size;
      if (_stacked && !floating) {
        parsed._stacks[vScale.axis]._visualValues[datasetIndex] = vScale.getValueForPixel(head) - vScale.getValueForPixel(base);
      }
    }
    if (base === vScale.getPixelForValue(actualBase)) {
      const halfGrid = sign(size) * vScale.getLineWidthForValue(actualBase) / 2;
      base += halfGrid;
      size -= halfGrid;
    }
    return {
      size,
      base,
      head,
      center: head + size / 2
    };
  }
  _calculateBarIndexPixels(index2, ruler) {
    const scale = ruler.scale;
    const options = this.options;
    const skipNull = options.skipNull;
    const maxBarThickness = valueOrDefault(options.maxBarThickness, Infinity);
    let center, size;
    if (ruler.grouped) {
      const stackCount = skipNull ? this._getStackCount(index2) : ruler.stackCount;
      const range = options.barThickness === "flex" ? computeFlexCategoryTraits(index2, ruler, options, stackCount) : computeFitCategoryTraits(index2, ruler, options, stackCount);
      const stackIndex = this._getStackIndex(this.index, this._cachedMeta.stack, skipNull ? index2 : void 0);
      center = range.start + range.chunk * stackIndex + range.chunk / 2;
      size = Math.min(maxBarThickness, range.chunk * range.ratio);
    } else {
      center = scale.getPixelForValue(this.getParsed(index2)[scale.axis], index2);
      size = Math.min(maxBarThickness, ruler.min * ruler.ratio);
    }
    return {
      base: center - size / 2,
      head: center + size / 2,
      center,
      size
    };
  }
  draw() {
    const meta = this._cachedMeta;
    const vScale = meta.vScale;
    const rects = meta.data;
    const ilen = rects.length;
    let i = 0;
    for (; i < ilen; ++i) {
      if (this.getParsed(i)[vScale.axis] !== null) {
        rects[i].draw(this._ctx);
      }
    }
  }
}
__publicField(BarController, "id", "bar");
__publicField(BarController, "defaults", {
  datasetElementType: false,
  dataElementType: "bar",
  categoryPercentage: 0.8,
  barPercentage: 0.9,
  grouped: true,
  animations: {
    numbers: {
      type: "number",
      properties: [
        "x",
        "y",
        "base",
        "width",
        "height"
      ]
    }
  }
});
__publicField(BarController, "overrides", {
  scales: {
    _index_: {
      type: "category",
      offset: true,
      grid: {
        offset: true
      }
    },
    _value_: {
      type: "linear",
      beginAtZero: true
    }
  }
});
class BubbleController extends DatasetController {
  initialize() {
    this.enableOptionSharing = true;
    super.initialize();
  }
  parsePrimitiveData(meta, data, start, count) {
    const parsed = super.parsePrimitiveData(meta, data, start, count);
    for (let i = 0; i < parsed.length; i++) {
      parsed[i]._custom = this.resolveDataElementOptions(i + start).radius;
    }
    return parsed;
  }
  parseArrayData(meta, data, start, count) {
    const parsed = super.parseArrayData(meta, data, start, count);
    for (let i = 0; i < parsed.length; i++) {
      const item = data[start + i];
      parsed[i]._custom = valueOrDefault(item[2], this.resolveDataElementOptions(i + start).radius);
    }
    return parsed;
  }
  parseObjectData(meta, data, start, count) {
    const parsed = super.parseObjectData(meta, data, start, count);
    for (let i = 0; i < parsed.length; i++) {
      const item = data[start + i];
      parsed[i]._custom = valueOrDefault(item && item.r && +item.r, this.resolveDataElementOptions(i + start).radius);
    }
    return parsed;
  }
  getMaxOverflow() {
    const data = this._cachedMeta.data;
    let max = 0;
    for (let i = data.length - 1; i >= 0; --i) {
      max = Math.max(max, data[i].size(this.resolveDataElementOptions(i)) / 2);
    }
    return max > 0 && max;
  }
  getLabelAndValue(index2) {
    const meta = this._cachedMeta;
    const labels = this.chart.data.labels || [];
    const { xScale, yScale } = meta;
    const parsed = this.getParsed(index2);
    const x = xScale.getLabelForValue(parsed.x);
    const y = yScale.getLabelForValue(parsed.y);
    const r = parsed._custom;
    return {
      label: labels[index2] || "",
      value: "(" + x + ", " + y + (r ? ", " + r : "") + ")"
    };
  }
  update(mode) {
    const points = this._cachedMeta.data;
    this.updateElements(points, 0, points.length, mode);
  }
  updateElements(points, start, count, mode) {
    const reset2 = mode === "reset";
    const { iScale, vScale } = this._cachedMeta;
    const { sharedOptions, includeOptions } = this._getSharedOptions(start, mode);
    const iAxis = iScale.axis;
    const vAxis = vScale.axis;
    for (let i = start; i < start + count; i++) {
      const point = points[i];
      const parsed = !reset2 && this.getParsed(i);
      const properties = {};
      const iPixel = properties[iAxis] = reset2 ? iScale.getPixelForDecimal(0.5) : iScale.getPixelForValue(parsed[iAxis]);
      const vPixel = properties[vAxis] = reset2 ? vScale.getBasePixel() : vScale.getPixelForValue(parsed[vAxis]);
      properties.skip = isNaN(iPixel) || isNaN(vPixel);
      if (includeOptions) {
        properties.options = sharedOptions || this.resolveDataElementOptions(i, point.active ? "active" : mode);
        if (reset2) {
          properties.options.radius = 0;
        }
      }
      this.updateElement(point, i, properties, mode);
    }
  }
  resolveDataElementOptions(index2, mode) {
    const parsed = this.getParsed(index2);
    let values = super.resolveDataElementOptions(index2, mode);
    if (values.$shared) {
      values = Object.assign({}, values, {
        $shared: false
      });
    }
    const radius = values.radius;
    if (mode !== "active") {
      values.radius = 0;
    }
    values.radius += valueOrDefault(parsed && parsed._custom, radius);
    return values;
  }
}
__publicField(BubbleController, "id", "bubble");
__publicField(BubbleController, "defaults", {
  datasetElementType: false,
  dataElementType: "point",
  animations: {
    numbers: {
      type: "number",
      properties: [
        "x",
        "y",
        "borderWidth",
        "radius"
      ]
    }
  }
});
__publicField(BubbleController, "overrides", {
  scales: {
    x: {
      type: "linear"
    },
    y: {
      type: "linear"
    }
  }
});
function getRatioAndOffset(rotation, circumference, cutout) {
  let ratioX = 1;
  let ratioY = 1;
  let offsetX = 0;
  let offsetY = 0;
  if (circumference < TAU) {
    const startAngle = rotation;
    const endAngle = startAngle + circumference;
    const startX = Math.cos(startAngle);
    const startY = Math.sin(startAngle);
    const endX = Math.cos(endAngle);
    const endY = Math.sin(endAngle);
    const calcMax = (angle, a, b) => _angleBetween(angle, startAngle, endAngle, true) ? 1 : Math.max(a, a * cutout, b, b * cutout);
    const calcMin = (angle, a, b) => _angleBetween(angle, startAngle, endAngle, true) ? -1 : Math.min(a, a * cutout, b, b * cutout);
    const maxX = calcMax(0, startX, endX);
    const maxY = calcMax(HALF_PI, startY, endY);
    const minX = calcMin(PI, startX, endX);
    const minY = calcMin(PI + HALF_PI, startY, endY);
    ratioX = (maxX - minX) / 2;
    ratioY = (maxY - minY) / 2;
    offsetX = -(maxX + minX) / 2;
    offsetY = -(maxY + minY) / 2;
  }
  return {
    ratioX,
    ratioY,
    offsetX,
    offsetY
  };
}
class DoughnutController extends DatasetController {
  constructor(chart, datasetIndex) {
    super(chart, datasetIndex);
    this.enableOptionSharing = true;
    this.innerRadius = void 0;
    this.outerRadius = void 0;
    this.offsetX = void 0;
    this.offsetY = void 0;
  }
  linkScales() {
  }
  parse(start, count) {
    const data = this.getDataset().data;
    const meta = this._cachedMeta;
    if (this._parsing === false) {
      meta._parsed = data;
    } else {
      let getter = (i2) => +data[i2];
      if (isObject(data[start])) {
        const { key = "value" } = this._parsing;
        getter = (i2) => +resolveObjectKey(data[i2], key);
      }
      let i, ilen;
      for (i = start, ilen = start + count; i < ilen; ++i) {
        meta._parsed[i] = getter(i);
      }
    }
  }
  _getRotation() {
    return toRadians(this.options.rotation - 90);
  }
  _getCircumference() {
    return toRadians(this.options.circumference);
  }
  _getRotationExtents() {
    let min = TAU;
    let max = -TAU;
    for (let i = 0; i < this.chart.data.datasets.length; ++i) {
      if (this.chart.isDatasetVisible(i) && this.chart.getDatasetMeta(i).type === this._type) {
        const controller = this.chart.getDatasetMeta(i).controller;
        const rotation = controller._getRotation();
        const circumference = controller._getCircumference();
        min = Math.min(min, rotation);
        max = Math.max(max, rotation + circumference);
      }
    }
    return {
      rotation: min,
      circumference: max - min
    };
  }
  update(mode) {
    const chart = this.chart;
    const { chartArea } = chart;
    const meta = this._cachedMeta;
    const arcs = meta.data;
    const spacing = this.getMaxBorderWidth() + this.getMaxOffset(arcs) + this.options.spacing;
    const maxSize = Math.max((Math.min(chartArea.width, chartArea.height) - spacing) / 2, 0);
    const cutout = Math.min(toPercentage(this.options.cutout, maxSize), 1);
    const chartWeight = this._getRingWeight(this.index);
    const { circumference, rotation } = this._getRotationExtents();
    const { ratioX, ratioY, offsetX, offsetY } = getRatioAndOffset(rotation, circumference, cutout);
    const maxWidth = (chartArea.width - spacing) / ratioX;
    const maxHeight = (chartArea.height - spacing) / ratioY;
    const maxRadius = Math.max(Math.min(maxWidth, maxHeight) / 2, 0);
    const outerRadius = toDimension(this.options.radius, maxRadius);
    const innerRadius = Math.max(outerRadius * cutout, 0);
    const radiusLength = (outerRadius - innerRadius) / this._getVisibleDatasetWeightTotal();
    this.offsetX = offsetX * outerRadius;
    this.offsetY = offsetY * outerRadius;
    meta.total = this.calculateTotal();
    this.outerRadius = outerRadius - radiusLength * this._getRingWeightOffset(this.index);
    this.innerRadius = Math.max(this.outerRadius - radiusLength * chartWeight, 0);
    this.updateElements(arcs, 0, arcs.length, mode);
  }
  _circumference(i, reset2) {
    const opts = this.options;
    const meta = this._cachedMeta;
    const circumference = this._getCircumference();
    if (reset2 && opts.animation.animateRotate || !this.chart.getDataVisibility(i) || meta._parsed[i] === null || meta.data[i].hidden) {
      return 0;
    }
    return this.calculateCircumference(meta._parsed[i] * circumference / TAU);
  }
  updateElements(arcs, start, count, mode) {
    const reset2 = mode === "reset";
    const chart = this.chart;
    const chartArea = chart.chartArea;
    const opts = chart.options;
    const animationOpts = opts.animation;
    const centerX = (chartArea.left + chartArea.right) / 2;
    const centerY = (chartArea.top + chartArea.bottom) / 2;
    const animateScale = reset2 && animationOpts.animateScale;
    const innerRadius = animateScale ? 0 : this.innerRadius;
    const outerRadius = animateScale ? 0 : this.outerRadius;
    const { sharedOptions, includeOptions } = this._getSharedOptions(start, mode);
    let startAngle = this._getRotation();
    let i;
    for (i = 0; i < start; ++i) {
      startAngle += this._circumference(i, reset2);
    }
    for (i = start; i < start + count; ++i) {
      const circumference = this._circumference(i, reset2);
      const arc = arcs[i];
      const properties = {
        x: centerX + this.offsetX,
        y: centerY + this.offsetY,
        startAngle,
        endAngle: startAngle + circumference,
        circumference,
        outerRadius,
        innerRadius
      };
      if (includeOptions) {
        properties.options = sharedOptions || this.resolveDataElementOptions(i, arc.active ? "active" : mode);
      }
      startAngle += circumference;
      this.updateElement(arc, i, properties, mode);
    }
  }
  calculateTotal() {
    const meta = this._cachedMeta;
    const metaData = meta.data;
    let total = 0;
    let i;
    for (i = 0; i < metaData.length; i++) {
      const value = meta._parsed[i];
      if (value !== null && !isNaN(value) && this.chart.getDataVisibility(i) && !metaData[i].hidden) {
        total += Math.abs(value);
      }
    }
    return total;
  }
  calculateCircumference(value) {
    const total = this._cachedMeta.total;
    if (total > 0 && !isNaN(value)) {
      return TAU * (Math.abs(value) / total);
    }
    return 0;
  }
  getLabelAndValue(index2) {
    const meta = this._cachedMeta;
    const chart = this.chart;
    const labels = chart.data.labels || [];
    const value = formatNumber(meta._parsed[index2], chart.options.locale);
    return {
      label: labels[index2] || "",
      value
    };
  }
  getMaxBorderWidth(arcs) {
    let max = 0;
    const chart = this.chart;
    let i, ilen, meta, controller, options;
    if (!arcs) {
      for (i = 0, ilen = chart.data.datasets.length; i < ilen; ++i) {
        if (chart.isDatasetVisible(i)) {
          meta = chart.getDatasetMeta(i);
          arcs = meta.data;
          controller = meta.controller;
          break;
        }
      }
    }
    if (!arcs) {
      return 0;
    }
    for (i = 0, ilen = arcs.length; i < ilen; ++i) {
      options = controller.resolveDataElementOptions(i);
      if (options.borderAlign !== "inner") {
        max = Math.max(max, options.borderWidth || 0, options.hoverBorderWidth || 0);
      }
    }
    return max;
  }
  getMaxOffset(arcs) {
    let max = 0;
    for (let i = 0, ilen = arcs.length; i < ilen; ++i) {
      const options = this.resolveDataElementOptions(i);
      max = Math.max(max, options.offset || 0, options.hoverOffset || 0);
    }
    return max;
  }
  _getRingWeightOffset(datasetIndex) {
    let ringWeightOffset = 0;
    for (let i = 0; i < datasetIndex; ++i) {
      if (this.chart.isDatasetVisible(i)) {
        ringWeightOffset += this._getRingWeight(i);
      }
    }
    return ringWeightOffset;
  }
  _getRingWeight(datasetIndex) {
    return Math.max(valueOrDefault(this.chart.data.datasets[datasetIndex].weight, 1), 0);
  }
  _getVisibleDatasetWeightTotal() {
    return this._getRingWeightOffset(this.chart.data.datasets.length) || 1;
  }
}
__publicField(DoughnutController, "id", "doughnut");
__publicField(DoughnutController, "defaults", {
  datasetElementType: false,
  dataElementType: "arc",
  animation: {
    animateRotate: true,
    animateScale: false
  },
  animations: {
    numbers: {
      type: "number",
      properties: [
        "circumference",
        "endAngle",
        "innerRadius",
        "outerRadius",
        "startAngle",
        "x",
        "y",
        "offset",
        "borderWidth",
        "spacing"
      ]
    }
  },
  cutout: "50%",
  rotation: 0,
  circumference: 360,
  radius: "100%",
  spacing: 0,
  indexAxis: "r"
});
__publicField(DoughnutController, "descriptors", {
  _scriptable: (name2) => name2 !== "spacing",
  _indexable: (name2) => name2 !== "spacing"
});
__publicField(DoughnutController, "overrides", {
  aspectRatio: 1,
  plugins: {
    legend: {
      labels: {
        generateLabels(chart) {
          const data = chart.data;
          if (data.labels.length && data.datasets.length) {
            const { labels: { pointStyle, color: color2 } } = chart.legend.options;
            return data.labels.map((label, i) => {
              const meta = chart.getDatasetMeta(0);
              const style = meta.controller.getStyle(i);
              return {
                text: label,
                fillStyle: style.backgroundColor,
                strokeStyle: style.borderColor,
                fontColor: color2,
                lineWidth: style.borderWidth,
                pointStyle,
                hidden: !chart.getDataVisibility(i),
                index: i
              };
            });
          }
          return [];
        }
      },
      onClick(e, legendItem, legend) {
        legend.chart.toggleDataVisibility(legendItem.index);
        legend.chart.update();
      }
    }
  }
});
class LineController extends DatasetController {
  initialize() {
    this.enableOptionSharing = true;
    this.supportsDecimation = true;
    super.initialize();
  }
  update(mode) {
    const meta = this._cachedMeta;
    const { dataset: line, data: points = [], _dataset } = meta;
    const animationsDisabled = this.chart._animationsDisabled;
    let { start, count } = _getStartAndCountOfVisiblePoints(meta, points, animationsDisabled);
    this._drawStart = start;
    this._drawCount = count;
    if (_scaleRangesChanged(meta)) {
      start = 0;
      count = points.length;
    }
    line._chart = this.chart;
    line._datasetIndex = this.index;
    line._decimated = !!_dataset._decimated;
    line.points = points;
    const options = this.resolveDatasetElementOptions(mode);
    if (!this.options.showLine) {
      options.borderWidth = 0;
    }
    options.segment = this.options.segment;
    this.updateElement(line, void 0, {
      animated: !animationsDisabled,
      options
    }, mode);
    this.updateElements(points, start, count, mode);
  }
  updateElements(points, start, count, mode) {
    const reset2 = mode === "reset";
    const { iScale, vScale, _stacked, _dataset } = this._cachedMeta;
    const { sharedOptions, includeOptions } = this._getSharedOptions(start, mode);
    const iAxis = iScale.axis;
    const vAxis = vScale.axis;
    const { spanGaps, segment } = this.options;
    const maxGapLength = isNumber(spanGaps) ? spanGaps : Number.POSITIVE_INFINITY;
    const directUpdate = this.chart._animationsDisabled || reset2 || mode === "none";
    const end = start + count;
    const pointsCount = points.length;
    let prevParsed = start > 0 && this.getParsed(start - 1);
    for (let i = 0; i < pointsCount; ++i) {
      const point = points[i];
      const properties = directUpdate ? point : {};
      if (i < start || i >= end) {
        properties.skip = true;
        continue;
      }
      const parsed = this.getParsed(i);
      const nullData = isNullOrUndef(parsed[vAxis]);
      const iPixel = properties[iAxis] = iScale.getPixelForValue(parsed[iAxis], i);
      const vPixel = properties[vAxis] = reset2 || nullData ? vScale.getBasePixel() : vScale.getPixelForValue(_stacked ? this.applyStack(vScale, parsed, _stacked) : parsed[vAxis], i);
      properties.skip = isNaN(iPixel) || isNaN(vPixel) || nullData;
      properties.stop = i > 0 && Math.abs(parsed[iAxis] - prevParsed[iAxis]) > maxGapLength;
      if (segment) {
        properties.parsed = parsed;
        properties.raw = _dataset.data[i];
      }
      if (includeOptions) {
        properties.options = sharedOptions || this.resolveDataElementOptions(i, point.active ? "active" : mode);
      }
      if (!directUpdate) {
        this.updateElement(point, i, properties, mode);
      }
      prevParsed = parsed;
    }
  }
  getMaxOverflow() {
    const meta = this._cachedMeta;
    const dataset = meta.dataset;
    const border = dataset.options && dataset.options.borderWidth || 0;
    const data = meta.data || [];
    if (!data.length) {
      return border;
    }
    const firstPoint = data[0].size(this.resolveDataElementOptions(0));
    const lastPoint = data[data.length - 1].size(this.resolveDataElementOptions(data.length - 1));
    return Math.max(border, firstPoint, lastPoint) / 2;
  }
  draw() {
    const meta = this._cachedMeta;
    meta.dataset.updateControlPoints(this.chart.chartArea, meta.iScale.axis);
    super.draw();
  }
}
__publicField(LineController, "id", "line");
__publicField(LineController, "defaults", {
  datasetElementType: "line",
  dataElementType: "point",
  showLine: true,
  spanGaps: false
});
__publicField(LineController, "overrides", {
  scales: {
    _index_: {
      type: "category"
    },
    _value_: {
      type: "linear"
    }
  }
});
class PolarAreaController extends DatasetController {
  constructor(chart, datasetIndex) {
    super(chart, datasetIndex);
    this.innerRadius = void 0;
    this.outerRadius = void 0;
  }
  getLabelAndValue(index2) {
    const meta = this._cachedMeta;
    const chart = this.chart;
    const labels = chart.data.labels || [];
    const value = formatNumber(meta._parsed[index2].r, chart.options.locale);
    return {
      label: labels[index2] || "",
      value
    };
  }
  parseObjectData(meta, data, start, count) {
    return _parseObjectDataRadialScale.bind(this)(meta, data, start, count);
  }
  update(mode) {
    const arcs = this._cachedMeta.data;
    this._updateRadius();
    this.updateElements(arcs, 0, arcs.length, mode);
  }
  getMinMax() {
    const meta = this._cachedMeta;
    const range = {
      min: Number.POSITIVE_INFINITY,
      max: Number.NEGATIVE_INFINITY
    };
    meta.data.forEach((element, index2) => {
      const parsed = this.getParsed(index2).r;
      if (!isNaN(parsed) && this.chart.getDataVisibility(index2)) {
        if (parsed < range.min) {
          range.min = parsed;
        }
        if (parsed > range.max) {
          range.max = parsed;
        }
      }
    });
    return range;
  }
  _updateRadius() {
    const chart = this.chart;
    const chartArea = chart.chartArea;
    const opts = chart.options;
    const minSize = Math.min(chartArea.right - chartArea.left, chartArea.bottom - chartArea.top);
    const outerRadius = Math.max(minSize / 2, 0);
    const innerRadius = Math.max(opts.cutoutPercentage ? outerRadius / 100 * opts.cutoutPercentage : 1, 0);
    const radiusLength = (outerRadius - innerRadius) / chart.getVisibleDatasetCount();
    this.outerRadius = outerRadius - radiusLength * this.index;
    this.innerRadius = this.outerRadius - radiusLength;
  }
  updateElements(arcs, start, count, mode) {
    const reset2 = mode === "reset";
    const chart = this.chart;
    const opts = chart.options;
    const animationOpts = opts.animation;
    const scale = this._cachedMeta.rScale;
    const centerX = scale.xCenter;
    const centerY = scale.yCenter;
    const datasetStartAngle = scale.getIndexAngle(0) - 0.5 * PI;
    let angle = datasetStartAngle;
    let i;
    const defaultAngle = 360 / this.countVisibleElements();
    for (i = 0; i < start; ++i) {
      angle += this._computeAngle(i, mode, defaultAngle);
    }
    for (i = start; i < start + count; i++) {
      const arc = arcs[i];
      let startAngle = angle;
      let endAngle = angle + this._computeAngle(i, mode, defaultAngle);
      let outerRadius = chart.getDataVisibility(i) ? scale.getDistanceFromCenterForValue(this.getParsed(i).r) : 0;
      angle = endAngle;
      if (reset2) {
        if (animationOpts.animateScale) {
          outerRadius = 0;
        }
        if (animationOpts.animateRotate) {
          startAngle = endAngle = datasetStartAngle;
        }
      }
      const properties = {
        x: centerX,
        y: centerY,
        innerRadius: 0,
        outerRadius,
        startAngle,
        endAngle,
        options: this.resolveDataElementOptions(i, arc.active ? "active" : mode)
      };
      this.updateElement(arc, i, properties, mode);
    }
  }
  countVisibleElements() {
    const meta = this._cachedMeta;
    let count = 0;
    meta.data.forEach((element, index2) => {
      if (!isNaN(this.getParsed(index2).r) && this.chart.getDataVisibility(index2)) {
        count++;
      }
    });
    return count;
  }
  _computeAngle(index2, mode, defaultAngle) {
    return this.chart.getDataVisibility(index2) ? toRadians(this.resolveDataElementOptions(index2, mode).angle || defaultAngle) : 0;
  }
}
__publicField(PolarAreaController, "id", "polarArea");
__publicField(PolarAreaController, "defaults", {
  dataElementType: "arc",
  animation: {
    animateRotate: true,
    animateScale: true
  },
  animations: {
    numbers: {
      type: "number",
      properties: [
        "x",
        "y",
        "startAngle",
        "endAngle",
        "innerRadius",
        "outerRadius"
      ]
    }
  },
  indexAxis: "r",
  startAngle: 0
});
__publicField(PolarAreaController, "overrides", {
  aspectRatio: 1,
  plugins: {
    legend: {
      labels: {
        generateLabels(chart) {
          const data = chart.data;
          if (data.labels.length && data.datasets.length) {
            const { labels: { pointStyle, color: color2 } } = chart.legend.options;
            return data.labels.map((label, i) => {
              const meta = chart.getDatasetMeta(0);
              const style = meta.controller.getStyle(i);
              return {
                text: label,
                fillStyle: style.backgroundColor,
                strokeStyle: style.borderColor,
                fontColor: color2,
                lineWidth: style.borderWidth,
                pointStyle,
                hidden: !chart.getDataVisibility(i),
                index: i
              };
            });
          }
          return [];
        }
      },
      onClick(e, legendItem, legend) {
        legend.chart.toggleDataVisibility(legendItem.index);
        legend.chart.update();
      }
    }
  },
  scales: {
    r: {
      type: "radialLinear",
      angleLines: {
        display: false
      },
      beginAtZero: true,
      grid: {
        circular: true
      },
      pointLabels: {
        display: false
      },
      startAngle: 0
    }
  }
});
class PieController extends DoughnutController {
}
__publicField(PieController, "id", "pie");
__publicField(PieController, "defaults", {
  cutout: 0,
  rotation: 0,
  circumference: 360,
  radius: "100%"
});
class RadarController extends DatasetController {
  getLabelAndValue(index2) {
    const vScale = this._cachedMeta.vScale;
    const parsed = this.getParsed(index2);
    return {
      label: vScale.getLabels()[index2],
      value: "" + vScale.getLabelForValue(parsed[vScale.axis])
    };
  }
  parseObjectData(meta, data, start, count) {
    return _parseObjectDataRadialScale.bind(this)(meta, data, start, count);
  }
  update(mode) {
    const meta = this._cachedMeta;
    const line = meta.dataset;
    const points = meta.data || [];
    const labels = meta.iScale.getLabels();
    line.points = points;
    if (mode !== "resize") {
      const options = this.resolveDatasetElementOptions(mode);
      if (!this.options.showLine) {
        options.borderWidth = 0;
      }
      const properties = {
        _loop: true,
        _fullLoop: labels.length === points.length,
        options
      };
      this.updateElement(line, void 0, properties, mode);
    }
    this.updateElements(points, 0, points.length, mode);
  }
  updateElements(points, start, count, mode) {
    const scale = this._cachedMeta.rScale;
    const reset2 = mode === "reset";
    for (let i = start; i < start + count; i++) {
      const point = points[i];
      const options = this.resolveDataElementOptions(i, point.active ? "active" : mode);
      const pointPosition = scale.getPointPositionForValue(i, this.getParsed(i).r);
      const x = reset2 ? scale.xCenter : pointPosition.x;
      const y = reset2 ? scale.yCenter : pointPosition.y;
      const properties = {
        x,
        y,
        angle: pointPosition.angle,
        skip: isNaN(x) || isNaN(y),
        options
      };
      this.updateElement(point, i, properties, mode);
    }
  }
}
__publicField(RadarController, "id", "radar");
__publicField(RadarController, "defaults", {
  datasetElementType: "line",
  dataElementType: "point",
  indexAxis: "r",
  showLine: true,
  elements: {
    line: {
      fill: "start"
    }
  }
});
__publicField(RadarController, "overrides", {
  aspectRatio: 1,
  scales: {
    r: {
      type: "radialLinear"
    }
  }
});
class ScatterController extends DatasetController {
  getLabelAndValue(index2) {
    const meta = this._cachedMeta;
    const labels = this.chart.data.labels || [];
    const { xScale, yScale } = meta;
    const parsed = this.getParsed(index2);
    const x = xScale.getLabelForValue(parsed.x);
    const y = yScale.getLabelForValue(parsed.y);
    return {
      label: labels[index2] || "",
      value: "(" + x + ", " + y + ")"
    };
  }
  update(mode) {
    const meta = this._cachedMeta;
    const { data: points = [] } = meta;
    const animationsDisabled = this.chart._animationsDisabled;
    let { start, count } = _getStartAndCountOfVisiblePoints(meta, points, animationsDisabled);
    this._drawStart = start;
    this._drawCount = count;
    if (_scaleRangesChanged(meta)) {
      start = 0;
      count = points.length;
    }
    if (this.options.showLine) {
      const { dataset: line, _dataset } = meta;
      line._chart = this.chart;
      line._datasetIndex = this.index;
      line._decimated = !!_dataset._decimated;
      line.points = points;
      const options = this.resolveDatasetElementOptions(mode);
      options.segment = this.options.segment;
      this.updateElement(line, void 0, {
        animated: !animationsDisabled,
        options
      }, mode);
    }
    this.updateElements(points, start, count, mode);
  }
  addElements() {
    const { showLine } = this.options;
    if (!this.datasetElementType && showLine) {
      this.datasetElementType = this.chart.registry.getElement("line");
    }
    super.addElements();
  }
  updateElements(points, start, count, mode) {
    const reset2 = mode === "reset";
    const { iScale, vScale, _stacked, _dataset } = this._cachedMeta;
    const firstOpts = this.resolveDataElementOptions(start, mode);
    const sharedOptions = this.getSharedOptions(firstOpts);
    const includeOptions = this.includeOptions(mode, sharedOptions);
    const iAxis = iScale.axis;
    const vAxis = vScale.axis;
    const { spanGaps, segment } = this.options;
    const maxGapLength = isNumber(spanGaps) ? spanGaps : Number.POSITIVE_INFINITY;
    const directUpdate = this.chart._animationsDisabled || reset2 || mode === "none";
    let prevParsed = start > 0 && this.getParsed(start - 1);
    for (let i = start; i < start + count; ++i) {
      const point = points[i];
      const parsed = this.getParsed(i);
      const properties = directUpdate ? point : {};
      const nullData = isNullOrUndef(parsed[vAxis]);
      const iPixel = properties[iAxis] = iScale.getPixelForValue(parsed[iAxis], i);
      const vPixel = properties[vAxis] = reset2 || nullData ? vScale.getBasePixel() : vScale.getPixelForValue(_stacked ? this.applyStack(vScale, parsed, _stacked) : parsed[vAxis], i);
      properties.skip = isNaN(iPixel) || isNaN(vPixel) || nullData;
      properties.stop = i > 0 && Math.abs(parsed[iAxis] - prevParsed[iAxis]) > maxGapLength;
      if (segment) {
        properties.parsed = parsed;
        properties.raw = _dataset.data[i];
      }
      if (includeOptions) {
        properties.options = sharedOptions || this.resolveDataElementOptions(i, point.active ? "active" : mode);
      }
      if (!directUpdate) {
        this.updateElement(point, i, properties, mode);
      }
      prevParsed = parsed;
    }
    this.updateSharedOptions(sharedOptions, mode, firstOpts);
  }
  getMaxOverflow() {
    const meta = this._cachedMeta;
    const data = meta.data || [];
    if (!this.options.showLine) {
      let max = 0;
      for (let i = data.length - 1; i >= 0; --i) {
        max = Math.max(max, data[i].size(this.resolveDataElementOptions(i)) / 2);
      }
      return max > 0 && max;
    }
    const dataset = meta.dataset;
    const border = dataset.options && dataset.options.borderWidth || 0;
    if (!data.length) {
      return border;
    }
    const firstPoint = data[0].size(this.resolveDataElementOptions(0));
    const lastPoint = data[data.length - 1].size(this.resolveDataElementOptions(data.length - 1));
    return Math.max(border, firstPoint, lastPoint) / 2;
  }
}
__publicField(ScatterController, "id", "scatter");
__publicField(ScatterController, "defaults", {
  datasetElementType: false,
  dataElementType: "point",
  showLine: false,
  fill: false
});
__publicField(ScatterController, "overrides", {
  interaction: {
    mode: "point"
  },
  scales: {
    x: {
      type: "linear"
    },
    y: {
      type: "linear"
    }
  }
});
var controllers = /* @__PURE__ */ Object.freeze({
  __proto__: null,
  BarController,
  BubbleController,
  DoughnutController,
  LineController,
  PolarAreaController,
  PieController,
  RadarController,
  ScatterController
});
function abstract() {
  throw new Error("This method is not implemented: Check that a complete date adapter is provided.");
}
class DateAdapterBase {
  /**
  * Override default date adapter methods.
  * Accepts type parameter to define options type.
  * @example
  * Chart._adapters._date.override<{myAdapterOption: string}>({
  *   init() {
  *     console.log(this.options.myAdapterOption);
  *   }
  * })
  */
  static override(members) {
    Object.assign(DateAdapterBase.prototype, members);
  }
  constructor(options) {
    this.options = options || {};
  }
  // eslint-disable-next-line @typescript-eslint/no-empty-function
  init() {
  }
  formats() {
    return abstract();
  }
  parse() {
    return abstract();
  }
  format() {
    return abstract();
  }
  add() {
    return abstract();
  }
  diff() {
    return abstract();
  }
  startOf() {
    return abstract();
  }
  endOf() {
    return abstract();
  }
}
var adapters = {
  _date: DateAdapterBase
};
function binarySearch(metaset, axis, value, intersect) {
  const { controller, data, _sorted } = metaset;
  const iScale = controller._cachedMeta.iScale;
  if (iScale && axis === iScale.axis && axis !== "r" && _sorted && data.length) {
    const lookupMethod = iScale._reversePixels ? _rlookupByKey : _lookupByKey;
    if (!intersect) {
      return lookupMethod(data, axis, value);
    } else if (controller._sharedOptions) {
      const el = data[0];
      const range = typeof el.getRange === "function" && el.getRange(axis);
      if (range) {
        const start = lookupMethod(data, axis, value - range);
        const end = lookupMethod(data, axis, value + range);
        return {
          lo: start.lo,
          hi: end.hi
        };
      }
    }
  }
  return {
    lo: 0,
    hi: data.length - 1
  };
}
function evaluateInteractionItems(chart, axis, position, handler, intersect) {
  const metasets = chart.getSortedVisibleDatasetMetas();
  const value = position[axis];
  for (let i = 0, ilen = metasets.length; i < ilen; ++i) {
    const { index: index2, data } = metasets[i];
    const { lo, hi } = binarySearch(metasets[i], axis, value, intersect);
    for (let j = lo; j <= hi; ++j) {
      const element = data[j];
      if (!element.skip) {
        handler(element, index2, j);
      }
    }
  }
}
function getDistanceMetricForAxis(axis) {
  const useX = axis.indexOf("x") !== -1;
  const useY = axis.indexOf("y") !== -1;
  return function(pt1, pt2) {
    const deltaX = useX ? Math.abs(pt1.x - pt2.x) : 0;
    const deltaY = useY ? Math.abs(pt1.y - pt2.y) : 0;
    return Math.sqrt(Math.pow(deltaX, 2) + Math.pow(deltaY, 2));
  };
}
function getIntersectItems(chart, position, axis, useFinalPosition, includeInvisible) {
  const items = [];
  if (!includeInvisible && !chart.isPointInArea(position)) {
    return items;
  }
  const evaluationFunc = function(element, datasetIndex, index2) {
    if (!includeInvisible && !_isPointInArea(element, chart.chartArea, 0)) {
      return;
    }
    if (element.inRange(position.x, position.y, useFinalPosition)) {
      items.push({
        element,
        datasetIndex,
        index: index2
      });
    }
  };
  evaluateInteractionItems(chart, axis, position, evaluationFunc, true);
  return items;
}
function getNearestRadialItems(chart, position, axis, useFinalPosition) {
  let items = [];
  function evaluationFunc(element, datasetIndex, index2) {
    const { startAngle, endAngle } = element.getProps([
      "startAngle",
      "endAngle"
    ], useFinalPosition);
    const { angle } = getAngleFromPoint(element, {
      x: position.x,
      y: position.y
    });
    if (_angleBetween(angle, startAngle, endAngle)) {
      items.push({
        element,
        datasetIndex,
        index: index2
      });
    }
  }
  evaluateInteractionItems(chart, axis, position, evaluationFunc);
  return items;
}
function getNearestCartesianItems(chart, position, axis, intersect, useFinalPosition, includeInvisible) {
  let items = [];
  const distanceMetric = getDistanceMetricForAxis(axis);
  let minDistance = Number.POSITIVE_INFINITY;
  function evaluationFunc(element, datasetIndex, index2) {
    const inRange2 = element.inRange(position.x, position.y, useFinalPosition);
    if (intersect && !inRange2) {
      return;
    }
    const center = element.getCenterPoint(useFinalPosition);
    const pointInArea = !!includeInvisible || chart.isPointInArea(center);
    if (!pointInArea && !inRange2) {
      return;
    }
    const distance = distanceMetric(position, center);
    if (distance < minDistance) {
      items = [
        {
          element,
          datasetIndex,
          index: index2
        }
      ];
      minDistance = distance;
    } else if (distance === minDistance) {
      items.push({
        element,
        datasetIndex,
        index: index2
      });
    }
  }
  evaluateInteractionItems(chart, axis, position, evaluationFunc);
  return items;
}
function getNearestItems(chart, position, axis, intersect, useFinalPosition, includeInvisible) {
  if (!includeInvisible && !chart.isPointInArea(position)) {
    return [];
  }
  return axis === "r" && !intersect ? getNearestRadialItems(chart, position, axis, useFinalPosition) : getNearestCartesianItems(chart, position, axis, intersect, useFinalPosition, includeInvisible);
}
function getAxisItems(chart, position, axis, intersect, useFinalPosition) {
  const items = [];
  const rangeMethod = axis === "x" ? "inXRange" : "inYRange";
  let intersectsItem = false;
  evaluateInteractionItems(chart, axis, position, (element, datasetIndex, index2) => {
    if (element[rangeMethod](position[axis], useFinalPosition)) {
      items.push({
        element,
        datasetIndex,
        index: index2
      });
      intersectsItem = intersectsItem || element.inRange(position.x, position.y, useFinalPosition);
    }
  });
  if (intersect && !intersectsItem) {
    return [];
  }
  return items;
}
var Interaction = {
  evaluateInteractionItems,
  modes: {
    index(chart, e, options, useFinalPosition) {
      const position = getRelativePosition(e, chart);
      const axis = options.axis || "x";
      const includeInvisible = options.includeInvisible || false;
      const items = options.intersect ? getIntersectItems(chart, position, axis, useFinalPosition, includeInvisible) : getNearestItems(chart, position, axis, false, useFinalPosition, includeInvisible);
      const elements2 = [];
      if (!items.length) {
        return [];
      }
      chart.getSortedVisibleDatasetMetas().forEach((meta) => {
        const index2 = items[0].index;
        const element = meta.data[index2];
        if (element && !element.skip) {
          elements2.push({
            element,
            datasetIndex: meta.index,
            index: index2
          });
        }
      });
      return elements2;
    },
    dataset(chart, e, options, useFinalPosition) {
      const position = getRelativePosition(e, chart);
      const axis = options.axis || "xy";
      const includeInvisible = options.includeInvisible || false;
      let items = options.intersect ? getIntersectItems(chart, position, axis, useFinalPosition, includeInvisible) : getNearestItems(chart, position, axis, false, useFinalPosition, includeInvisible);
      if (items.length > 0) {
        const datasetIndex = items[0].datasetIndex;
        const data = chart.getDatasetMeta(datasetIndex).data;
        items = [];
        for (let i = 0; i < data.length; ++i) {
          items.push({
            element: data[i],
            datasetIndex,
            index: i
          });
        }
      }
      return items;
    },
    point(chart, e, options, useFinalPosition) {
      const position = getRelativePosition(e, chart);
      const axis = options.axis || "xy";
      const includeInvisible = options.includeInvisible || false;
      return getIntersectItems(chart, position, axis, useFinalPosition, includeInvisible);
    },
    nearest(chart, e, options, useFinalPosition) {
      const position = getRelativePosition(e, chart);
      const axis = options.axis || "xy";
      const includeInvisible = options.includeInvisible || false;
      return getNearestItems(chart, position, axis, options.intersect, useFinalPosition, includeInvisible);
    },
    x(chart, e, options, useFinalPosition) {
      const position = getRelativePosition(e, chart);
      return getAxisItems(chart, position, "x", options.intersect, useFinalPosition);
    },
    y(chart, e, options, useFinalPosition) {
      const position = getRelativePosition(e, chart);
      return getAxisItems(chart, position, "y", options.intersect, useFinalPosition);
    }
  }
};
const STATIC_POSITIONS = [
  "left",
  "top",
  "right",
  "bottom"
];
function filterByPosition(array, position) {
  return array.filter((v) => v.pos === position);
}
function filterDynamicPositionByAxis(array, axis) {
  return array.filter((v) => STATIC_POSITIONS.indexOf(v.pos) === -1 && v.box.axis === axis);
}
function sortByWeight(array, reverse) {
  return array.sort((a, b) => {
    const v0 = reverse ? b : a;
    const v1 = reverse ? a : b;
    return v0.weight === v1.weight ? v0.index - v1.index : v0.weight - v1.weight;
  });
}
function wrapBoxes(boxes) {
  const layoutBoxes = [];
  let i, ilen, box, pos, stack, stackWeight;
  for (i = 0, ilen = (boxes || []).length; i < ilen; ++i) {
    box = boxes[i];
    ({ position: pos, options: { stack, stackWeight = 1 } } = box);
    layoutBoxes.push({
      index: i,
      box,
      pos,
      horizontal: box.isHorizontal(),
      weight: box.weight,
      stack: stack && pos + stack,
      stackWeight
    });
  }
  return layoutBoxes;
}
function buildStacks(layouts2) {
  const stacks = {};
  for (const wrap of layouts2) {
    const { stack, pos, stackWeight } = wrap;
    if (!stack || !STATIC_POSITIONS.includes(pos)) {
      continue;
    }
    const _stack = stacks[stack] || (stacks[stack] = {
      count: 0,
      placed: 0,
      weight: 0,
      size: 0
    });
    _stack.count++;
    _stack.weight += stackWeight;
  }
  return stacks;
}
function setLayoutDims(layouts2, params) {
  const stacks = buildStacks(layouts2);
  const { vBoxMaxWidth, hBoxMaxHeight } = params;
  let i, ilen, layout;
  for (i = 0, ilen = layouts2.length; i < ilen; ++i) {
    layout = layouts2[i];
    const { fullSize } = layout.box;
    const stack = stacks[layout.stack];
    const factor = stack && layout.stackWeight / stack.weight;
    if (layout.horizontal) {
      layout.width = factor ? factor * vBoxMaxWidth : fullSize && params.availableWidth;
      layout.height = hBoxMaxHeight;
    } else {
      layout.width = vBoxMaxWidth;
      layout.height = factor ? factor * hBoxMaxHeight : fullSize && params.availableHeight;
    }
  }
  return stacks;
}
function buildLayoutBoxes(boxes) {
  const layoutBoxes = wrapBoxes(boxes);
  const fullSize = sortByWeight(layoutBoxes.filter((wrap) => wrap.box.fullSize), true);
  const left = sortByWeight(filterByPosition(layoutBoxes, "left"), true);
  const right = sortByWeight(filterByPosition(layoutBoxes, "right"));
  const top = sortByWeight(filterByPosition(layoutBoxes, "top"), true);
  const bottom = sortByWeight(filterByPosition(layoutBoxes, "bottom"));
  const centerHorizontal = filterDynamicPositionByAxis(layoutBoxes, "x");
  const centerVertical = filterDynamicPositionByAxis(layoutBoxes, "y");
  return {
    fullSize,
    leftAndTop: left.concat(top),
    rightAndBottom: right.concat(centerVertical).concat(bottom).concat(centerHorizontal),
    chartArea: filterByPosition(layoutBoxes, "chartArea"),
    vertical: left.concat(right).concat(centerVertical),
    horizontal: top.concat(bottom).concat(centerHorizontal)
  };
}
function getCombinedMax(maxPadding, chartArea, a, b) {
  return Math.max(maxPadding[a], chartArea[a]) + Math.max(maxPadding[b], chartArea[b]);
}
function updateMaxPadding(maxPadding, boxPadding) {
  maxPadding.top = Math.max(maxPadding.top, boxPadding.top);
  maxPadding.left = Math.max(maxPadding.left, boxPadding.left);
  maxPadding.bottom = Math.max(maxPadding.bottom, boxPadding.bottom);
  maxPadding.right = Math.max(maxPadding.right, boxPadding.right);
}
function updateDims(chartArea, params, layout, stacks) {
  const { pos, box } = layout;
  const maxPadding = chartArea.maxPadding;
  if (!isObject(pos)) {
    if (layout.size) {
      chartArea[pos] -= layout.size;
    }
    const stack = stacks[layout.stack] || {
      size: 0,
      count: 1
    };
    stack.size = Math.max(stack.size, layout.horizontal ? box.height : box.width);
    layout.size = stack.size / stack.count;
    chartArea[pos] += layout.size;
  }
  if (box.getPadding) {
    updateMaxPadding(maxPadding, box.getPadding());
  }
  const newWidth = Math.max(0, params.outerWidth - getCombinedMax(maxPadding, chartArea, "left", "right"));
  const newHeight = Math.max(0, params.outerHeight - getCombinedMax(maxPadding, chartArea, "top", "bottom"));
  const widthChanged = newWidth !== chartArea.w;
  const heightChanged = newHeight !== chartArea.h;
  chartArea.w = newWidth;
  chartArea.h = newHeight;
  return layout.horizontal ? {
    same: widthChanged,
    other: heightChanged
  } : {
    same: heightChanged,
    other: widthChanged
  };
}
function handleMaxPadding(chartArea) {
  const maxPadding = chartArea.maxPadding;
  function updatePos(pos) {
    const change = Math.max(maxPadding[pos] - chartArea[pos], 0);
    chartArea[pos] += change;
    return change;
  }
  chartArea.y += updatePos("top");
  chartArea.x += updatePos("left");
  updatePos("right");
  updatePos("bottom");
}
function getMargins(horizontal, chartArea) {
  const maxPadding = chartArea.maxPadding;
  function marginForPositions(positions2) {
    const margin = {
      left: 0,
      top: 0,
      right: 0,
      bottom: 0
    };
    positions2.forEach((pos) => {
      margin[pos] = Math.max(chartArea[pos], maxPadding[pos]);
    });
    return margin;
  }
  return horizontal ? marginForPositions([
    "left",
    "right"
  ]) : marginForPositions([
    "top",
    "bottom"
  ]);
}
function fitBoxes(boxes, chartArea, params, stacks) {
  const refitBoxes = [];
  let i, ilen, layout, box, refit, changed;
  for (i = 0, ilen = boxes.length, refit = 0; i < ilen; ++i) {
    layout = boxes[i];
    box = layout.box;
    box.update(layout.width || chartArea.w, layout.height || chartArea.h, getMargins(layout.horizontal, chartArea));
    const { same, other } = updateDims(chartArea, params, layout, stacks);
    refit |= same && refitBoxes.length;
    changed = changed || other;
    if (!box.fullSize) {
      refitBoxes.push(layout);
    }
  }
  return refit && fitBoxes(refitBoxes, chartArea, params, stacks) || changed;
}
function setBoxDims(box, left, top, width, height) {
  box.top = top;
  box.left = left;
  box.right = left + width;
  box.bottom = top + height;
  box.width = width;
  box.height = height;
}
function placeBoxes(boxes, chartArea, params, stacks) {
  const userPadding = params.padding;
  let { x, y } = chartArea;
  for (const layout of boxes) {
    const box = layout.box;
    const stack = stacks[layout.stack] || {
      count: 1,
      placed: 0,
      weight: 1
    };
    const weight = layout.stackWeight / stack.weight || 1;
    if (layout.horizontal) {
      const width = chartArea.w * weight;
      const height = stack.size || box.height;
      if (defined(stack.start)) {
        y = stack.start;
      }
      if (box.fullSize) {
        setBoxDims(box, userPadding.left, y, params.outerWidth - userPadding.right - userPadding.left, height);
      } else {
        setBoxDims(box, chartArea.left + stack.placed, y, width, height);
      }
      stack.start = y;
      stack.placed += width;
      y = box.bottom;
    } else {
      const height1 = chartArea.h * weight;
      const width1 = stack.size || box.width;
      if (defined(stack.start)) {
        x = stack.start;
      }
      if (box.fullSize) {
        setBoxDims(box, x, userPadding.top, width1, params.outerHeight - userPadding.bottom - userPadding.top);
      } else {
        setBoxDims(box, x, chartArea.top + stack.placed, width1, height1);
      }
      stack.start = x;
      stack.placed += height1;
      x = box.right;
    }
  }
  chartArea.x = x;
  chartArea.y = y;
}
var layouts = {
  addBox(chart, item) {
    if (!chart.boxes) {
      chart.boxes = [];
    }
    item.fullSize = item.fullSize || false;
    item.position = item.position || "top";
    item.weight = item.weight || 0;
    item._layers = item._layers || function() {
      return [
        {
          z: 0,
          draw(chartArea) {
            item.draw(chartArea);
          }
        }
      ];
    };
    chart.boxes.push(item);
  },
  removeBox(chart, layoutItem) {
    const index2 = chart.boxes ? chart.boxes.indexOf(layoutItem) : -1;
    if (index2 !== -1) {
      chart.boxes.splice(index2, 1);
    }
  },
  configure(chart, item, options) {
    item.fullSize = options.fullSize;
    item.position = options.position;
    item.weight = options.weight;
  },
  update(chart, width, height, minPadding) {
    if (!chart) {
      return;
    }
    const padding = toPadding(chart.options.layout.padding);
    const availableWidth = Math.max(width - padding.width, 0);
    const availableHeight = Math.max(height - padding.height, 0);
    const boxes = buildLayoutBoxes(chart.boxes);
    const verticalBoxes = boxes.vertical;
    const horizontalBoxes = boxes.horizontal;
    each(chart.boxes, (box) => {
      if (typeof box.beforeLayout === "function") {
        box.beforeLayout();
      }
    });
    const visibleVerticalBoxCount = verticalBoxes.reduce((total, wrap) => wrap.box.options && wrap.box.options.display === false ? total : total + 1, 0) || 1;
    const params = Object.freeze({
      outerWidth: width,
      outerHeight: height,
      padding,
      availableWidth,
      availableHeight,
      vBoxMaxWidth: availableWidth / 2 / visibleVerticalBoxCount,
      hBoxMaxHeight: availableHeight / 2
    });
    const maxPadding = Object.assign({}, padding);
    updateMaxPadding(maxPadding, toPadding(minPadding));
    const chartArea = Object.assign({
      maxPadding,
      w: availableWidth,
      h: availableHeight,
      x: padding.left,
      y: padding.top
    }, padding);
    const stacks = setLayoutDims(verticalBoxes.concat(horizontalBoxes), params);
    fitBoxes(boxes.fullSize, chartArea, params, stacks);
    fitBoxes(verticalBoxes, chartArea, params, stacks);
    if (fitBoxes(horizontalBoxes, chartArea, params, stacks)) {
      fitBoxes(verticalBoxes, chartArea, params, stacks);
    }
    handleMaxPadding(chartArea);
    placeBoxes(boxes.leftAndTop, chartArea, params, stacks);
    chartArea.x += chartArea.w;
    chartArea.y += chartArea.h;
    placeBoxes(boxes.rightAndBottom, chartArea, params, stacks);
    chart.chartArea = {
      left: chartArea.left,
      top: chartArea.top,
      right: chartArea.left + chartArea.w,
      bottom: chartArea.top + chartArea.h,
      height: chartArea.h,
      width: chartArea.w
    };
    each(boxes.chartArea, (layout) => {
      const box = layout.box;
      Object.assign(box, chart.chartArea);
      box.update(chartArea.w, chartArea.h, {
        left: 0,
        top: 0,
        right: 0,
        bottom: 0
      });
    });
  }
};
class BasePlatform {
  acquireContext(canvas, aspectRatio) {
  }
  releaseContext(context) {
    return false;
  }
  addEventListener(chart, type, listener) {
  }
  removeEventListener(chart, type, listener) {
  }
  getDevicePixelRatio() {
    return 1;
  }
  getMaximumSize(element, width, height, aspectRatio) {
    width = Math.max(0, width || element.width);
    height = height || element.height;
    return {
      width,
      height: Math.max(0, aspectRatio ? Math.floor(width / aspectRatio) : height)
    };
  }
  isAttached(canvas) {
    return true;
  }
  updateConfig(config) {
  }
}
class BasicPlatform extends BasePlatform {
  acquireContext(item) {
    return item && item.getContext && item.getContext("2d") || null;
  }
  updateConfig(config) {
    config.options.animation = false;
  }
}
const EXPANDO_KEY = "$chartjs";
const EVENT_TYPES = {
  touchstart: "mousedown",
  touchmove: "mousemove",
  touchend: "mouseup",
  pointerenter: "mouseenter",
  pointerdown: "mousedown",
  pointermove: "mousemove",
  pointerup: "mouseup",
  pointerleave: "mouseout",
  pointerout: "mouseout"
};
const isNullOrEmpty = (value) => value === null || value === "";
function initCanvas(canvas, aspectRatio) {
  const style = canvas.style;
  const renderHeight = canvas.getAttribute("height");
  const renderWidth = canvas.getAttribute("width");
  canvas[EXPANDO_KEY] = {
    initial: {
      height: renderHeight,
      width: renderWidth,
      style: {
        display: style.display,
        height: style.height,
        width: style.width
      }
    }
  };
  style.display = style.display || "block";
  style.boxSizing = style.boxSizing || "border-box";
  if (isNullOrEmpty(renderWidth)) {
    const displayWidth = readUsedSize(canvas, "width");
    if (displayWidth !== void 0) {
      canvas.width = displayWidth;
    }
  }
  if (isNullOrEmpty(renderHeight)) {
    if (canvas.style.height === "") {
      canvas.height = canvas.width / (aspectRatio || 2);
    } else {
      const displayHeight = readUsedSize(canvas, "height");
      if (displayHeight !== void 0) {
        canvas.height = displayHeight;
      }
    }
  }
  return canvas;
}
const eventListenerOptions = supportsEventListenerOptions ? {
  passive: true
} : false;
function addListener(node, type, listener) {
  node.addEventListener(type, listener, eventListenerOptions);
}
function removeListener(chart, type, listener) {
  chart.canvas.removeEventListener(type, listener, eventListenerOptions);
}
function fromNativeEvent(event, chart) {
  const type = EVENT_TYPES[event.type] || event.type;
  const { x, y } = getRelativePosition(event, chart);
  return {
    type,
    chart,
    native: event,
    x: x !== void 0 ? x : null,
    y: y !== void 0 ? y : null
  };
}
function nodeListContains(nodeList, canvas) {
  for (const node of nodeList) {
    if (node === canvas || node.contains(canvas)) {
      return true;
    }
  }
}
function createAttachObserver(chart, type, listener) {
  const canvas = chart.canvas;
  const observer = new MutationObserver((entries) => {
    let trigger = false;
    for (const entry of entries) {
      trigger = trigger || nodeListContains(entry.addedNodes, canvas);
      trigger = trigger && !nodeListContains(entry.removedNodes, canvas);
    }
    if (trigger) {
      listener();
    }
  });
  observer.observe(document, {
    childList: true,
    subtree: true
  });
  return observer;
}
function createDetachObserver(chart, type, listener) {
  const canvas = chart.canvas;
  const observer = new MutationObserver((entries) => {
    let trigger = false;
    for (const entry of entries) {
      trigger = trigger || nodeListContains(entry.removedNodes, canvas);
      trigger = trigger && !nodeListContains(entry.addedNodes, canvas);
    }
    if (trigger) {
      listener();
    }
  });
  observer.observe(document, {
    childList: true,
    subtree: true
  });
  return observer;
}
const drpListeningCharts = /* @__PURE__ */ new Map();
let oldDevicePixelRatio = 0;
function onWindowResize() {
  const dpr = window.devicePixelRatio;
  if (dpr === oldDevicePixelRatio) {
    return;
  }
  oldDevicePixelRatio = dpr;
  drpListeningCharts.forEach((resize, chart) => {
    if (chart.currentDevicePixelRatio !== dpr) {
      resize();
    }
  });
}
function listenDevicePixelRatioChanges(chart, resize) {
  if (!drpListeningCharts.size) {
    window.addEventListener("resize", onWindowResize);
  }
  drpListeningCharts.set(chart, resize);
}
function unlistenDevicePixelRatioChanges(chart) {
  drpListeningCharts.delete(chart);
  if (!drpListeningCharts.size) {
    window.removeEventListener("resize", onWindowResize);
  }
}
function createResizeObserver(chart, type, listener) {
  const canvas = chart.canvas;
  const container = canvas && _getParentNode(canvas);
  if (!container) {
    return;
  }
  const resize = throttled((width, height) => {
    const w = container.clientWidth;
    listener(width, height);
    if (w < container.clientWidth) {
      listener();
    }
  }, window);
  const observer = new ResizeObserver((entries) => {
    const entry = entries[0];
    const width = entry.contentRect.width;
    const height = entry.contentRect.height;
    if (width === 0 && height === 0) {
      return;
    }
    resize(width, height);
  });
  observer.observe(container);
  listenDevicePixelRatioChanges(chart, resize);
  return observer;
}
function releaseObserver(chart, type, observer) {
  if (observer) {
    observer.disconnect();
  }
  if (type === "resize") {
    unlistenDevicePixelRatioChanges(chart);
  }
}
function createProxyAndListen(chart, type, listener) {
  const canvas = chart.canvas;
  const proxy = throttled((event) => {
    if (chart.ctx !== null) {
      listener(fromNativeEvent(event, chart));
    }
  }, chart);
  addListener(canvas, type, proxy);
  return proxy;
}
class DomPlatform extends BasePlatform {
  acquireContext(canvas, aspectRatio) {
    const context = canvas && canvas.getContext && canvas.getContext("2d");
    if (context && context.canvas === canvas) {
      initCanvas(canvas, aspectRatio);
      return context;
    }
    return null;
  }
  releaseContext(context) {
    const canvas = context.canvas;
    if (!canvas[EXPANDO_KEY]) {
      return false;
    }
    const initial = canvas[EXPANDO_KEY].initial;
    [
      "height",
      "width"
    ].forEach((prop) => {
      const value = initial[prop];
      if (isNullOrUndef(value)) {
        canvas.removeAttribute(prop);
      } else {
        canvas.setAttribute(prop, value);
      }
    });
    const style = initial.style || {};
    Object.keys(style).forEach((key) => {
      canvas.style[key] = style[key];
    });
    canvas.width = canvas.width;
    delete canvas[EXPANDO_KEY];
    return true;
  }
  addEventListener(chart, type, listener) {
    this.removeEventListener(chart, type);
    const proxies = chart.$proxies || (chart.$proxies = {});
    const handlers = {
      attach: createAttachObserver,
      detach: createDetachObserver,
      resize: createResizeObserver
    };
    const handler = handlers[type] || createProxyAndListen;
    proxies[type] = handler(chart, type, listener);
  }
  removeEventListener(chart, type) {
    const proxies = chart.$proxies || (chart.$proxies = {});
    const proxy = proxies[type];
    if (!proxy) {
      return;
    }
    const handlers = {
      attach: releaseObserver,
      detach: releaseObserver,
      resize: releaseObserver
    };
    const handler = handlers[type] || removeListener;
    handler(chart, type, proxy);
    proxies[type] = void 0;
  }
  getDevicePixelRatio() {
    return window.devicePixelRatio;
  }
  getMaximumSize(canvas, width, height, aspectRatio) {
    return getMaximumSize(canvas, width, height, aspectRatio);
  }
  isAttached(canvas) {
    const container = _getParentNode(canvas);
    return !!(container && container.isConnected);
  }
}
function _detectPlatform(canvas) {
  if (!_isDomSupported() || typeof OffscreenCanvas !== "undefined" && canvas instanceof OffscreenCanvas) {
    return BasicPlatform;
  }
  return DomPlatform;
}
class Element {
  constructor() {
    __publicField(this, "active", false);
  }
  tooltipPosition(useFinalPosition) {
    const { x, y } = this.getProps([
      "x",
      "y"
    ], useFinalPosition);
    return {
      x,
      y
    };
  }
  hasValue() {
    return isNumber(this.x) && isNumber(this.y);
  }
  getProps(props, final) {
    const anims = this.$animations;
    if (!final || !anims) {
      return this;
    }
    const ret = {};
    props.forEach((prop) => {
      ret[prop] = anims[prop] && anims[prop].active() ? anims[prop]._to : this[prop];
    });
    return ret;
  }
}
__publicField(Element, "defaults", {});
__publicField(Element, "defaultRoutes");
function autoSkip(scale, ticks) {
  const tickOpts = scale.options.ticks;
  const determinedMaxTicks = determineMaxTicks(scale);
  const ticksLimit = Math.min(tickOpts.maxTicksLimit || determinedMaxTicks, determinedMaxTicks);
  const majorIndices = tickOpts.major.enabled ? getMajorIndices(ticks) : [];
  const numMajorIndices = majorIndices.length;
  const first = majorIndices[0];
  const last = majorIndices[numMajorIndices - 1];
  const newTicks = [];
  if (numMajorIndices > ticksLimit) {
    skipMajors(ticks, newTicks, majorIndices, numMajorIndices / ticksLimit);
    return newTicks;
  }
  const spacing = calculateSpacing(majorIndices, ticks, ticksLimit);
  if (numMajorIndices > 0) {
    let i, ilen;
    const avgMajorSpacing = numMajorIndices > 1 ? Math.round((last - first) / (numMajorIndices - 1)) : null;
    skip(ticks, newTicks, spacing, isNullOrUndef(avgMajorSpacing) ? 0 : first - avgMajorSpacing, first);
    for (i = 0, ilen = numMajorIndices - 1; i < ilen; i++) {
      skip(ticks, newTicks, spacing, majorIndices[i], majorIndices[i + 1]);
    }
    skip(ticks, newTicks, spacing, last, isNullOrUndef(avgMajorSpacing) ? ticks.length : last + avgMajorSpacing);
    return newTicks;
  }
  skip(ticks, newTicks, spacing);
  return newTicks;
}
function determineMaxTicks(scale) {
  const offset = scale.options.offset;
  const tickLength = scale._tickSize();
  const maxScale = scale._length / tickLength + (offset ? 0 : 1);
  const maxChart = scale._maxLength / tickLength;
  return Math.floor(Math.min(maxScale, maxChart));
}
function calculateSpacing(majorIndices, ticks, ticksLimit) {
  const evenMajorSpacing = getEvenSpacing(majorIndices);
  const spacing = ticks.length / ticksLimit;
  if (!evenMajorSpacing) {
    return Math.max(spacing, 1);
  }
  const factors = _factorize(evenMajorSpacing);
  for (let i = 0, ilen = factors.length - 1; i < ilen; i++) {
    const factor = factors[i];
    if (factor > spacing) {
      return factor;
    }
  }
  return Math.max(spacing, 1);
}
function getMajorIndices(ticks) {
  const result = [];
  let i, ilen;
  for (i = 0, ilen = ticks.length; i < ilen; i++) {
    if (ticks[i].major) {
      result.push(i);
    }
  }
  return result;
}
function skipMajors(ticks, newTicks, majorIndices, spacing) {
  let count = 0;
  let next = majorIndices[0];
  let i;
  spacing = Math.ceil(spacing);
  for (i = 0; i < ticks.length; i++) {
    if (i === next) {
      newTicks.push(ticks[i]);
      count++;
      next = majorIndices[count * spacing];
    }
  }
}
function skip(ticks, newTicks, spacing, majorStart, majorEnd) {
  const start = valueOrDefault(majorStart, 0);
  const end = Math.min(valueOrDefault(majorEnd, ticks.length), ticks.length);
  let count = 0;
  let length, i, next;
  spacing = Math.ceil(spacing);
  if (majorEnd) {
    length = majorEnd - majorStart;
    spacing = length / Math.floor(length / spacing);
  }
  next = start;
  while (next < 0) {
    count++;
    next = Math.round(start + count * spacing);
  }
  for (i = Math.max(start, 0); i < end; i++) {
    if (i === next) {
      newTicks.push(ticks[i]);
      count++;
      next = Math.round(start + count * spacing);
    }
  }
}
function getEvenSpacing(arr) {
  const len = arr.length;
  let i, diff;
  if (len < 2) {
    return false;
  }
  for (diff = arr[0], i = 1; i < len; ++i) {
    if (arr[i] - arr[i - 1] !== diff) {
      return false;
    }
  }
  return diff;
}
const reverseAlign = (align) => align === "left" ? "right" : align === "right" ? "left" : align;
const offsetFromEdge = (scale, edge, offset) => edge === "top" || edge === "left" ? scale[edge] + offset : scale[edge] - offset;
const getTicksLimit = (ticksLength, maxTicksLimit) => Math.min(maxTicksLimit || ticksLength, ticksLength);
function sample(arr, numItems) {
  const result = [];
  const increment = arr.length / numItems;
  const len = arr.length;
  let i = 0;
  for (; i < len; i += increment) {
    result.push(arr[Math.floor(i)]);
  }
  return result;
}
function getPixelForGridLine(scale, index2, offsetGridLines) {
  const length = scale.ticks.length;
  const validIndex2 = Math.min(index2, length - 1);
  const start = scale._startPixel;
  const end = scale._endPixel;
  const epsilon = 1e-6;
  let lineValue = scale.getPixelForTick(validIndex2);
  let offset;
  if (offsetGridLines) {
    if (length === 1) {
      offset = Math.max(lineValue - start, end - lineValue);
    } else if (index2 === 0) {
      offset = (scale.getPixelForTick(1) - lineValue) / 2;
    } else {
      offset = (lineValue - scale.getPixelForTick(validIndex2 - 1)) / 2;
    }
    lineValue += validIndex2 < index2 ? offset : -offset;
    if (lineValue < start - epsilon || lineValue > end + epsilon) {
      return;
    }
  }
  return lineValue;
}
function garbageCollect(caches, length) {
  each(caches, (cache) => {
    const gc = cache.gc;
    const gcLen = gc.length / 2;
    let i;
    if (gcLen > length) {
      for (i = 0; i < gcLen; ++i) {
        delete cache.data[gc[i]];
      }
      gc.splice(0, gcLen);
    }
  });
}
function getTickMarkLength(options) {
  return options.drawTicks ? options.tickLength : 0;
}
function getTitleHeight(options, fallback) {
  if (!options.display) {
    return 0;
  }
  const font = toFont(options.font, fallback);
  const padding = toPadding(options.padding);
  const lines = isArray(options.text) ? options.text.length : 1;
  return lines * font.lineHeight + padding.height;
}
function createScaleContext(parent, scale) {
  return createContext(parent, {
    scale,
    type: "scale"
  });
}
function createTickContext(parent, index2, tick) {
  return createContext(parent, {
    tick,
    index: index2,
    type: "tick"
  });
}
function titleAlign(align, position, reverse) {
  let ret = _toLeftRightCenter(align);
  if (reverse && position !== "right" || !reverse && position === "right") {
    ret = reverseAlign(ret);
  }
  return ret;
}
function titleArgs(scale, offset, position, align) {
  const { top, left, bottom, right, chart } = scale;
  const { chartArea, scales: scales2 } = chart;
  let rotation = 0;
  let maxWidth, titleX, titleY;
  const height = bottom - top;
  const width = right - left;
  if (scale.isHorizontal()) {
    titleX = _alignStartEnd(align, left, right);
    if (isObject(position)) {
      const positionAxisID = Object.keys(position)[0];
      const value = position[positionAxisID];
      titleY = scales2[positionAxisID].getPixelForValue(value) + height - offset;
    } else if (position === "center") {
      titleY = (chartArea.bottom + chartArea.top) / 2 + height - offset;
    } else {
      titleY = offsetFromEdge(scale, position, offset);
    }
    maxWidth = right - left;
  } else {
    if (isObject(position)) {
      const positionAxisID1 = Object.keys(position)[0];
      const value1 = position[positionAxisID1];
      titleX = scales2[positionAxisID1].getPixelForValue(value1) - width + offset;
    } else if (position === "center") {
      titleX = (chartArea.left + chartArea.right) / 2 - width + offset;
    } else {
      titleX = offsetFromEdge(scale, position, offset);
    }
    titleY = _alignStartEnd(align, bottom, top);
    rotation = position === "left" ? -HALF_PI : HALF_PI;
  }
  return {
    titleX,
    titleY,
    maxWidth,
    rotation
  };
}
class Scale extends Element {
  constructor(cfg) {
    super();
    this.id = cfg.id;
    this.type = cfg.type;
    this.options = void 0;
    this.ctx = cfg.ctx;
    this.chart = cfg.chart;
    this.top = void 0;
    this.bottom = void 0;
    this.left = void 0;
    this.right = void 0;
    this.width = void 0;
    this.height = void 0;
    this._margins = {
      left: 0,
      right: 0,
      top: 0,
      bottom: 0
    };
    this.maxWidth = void 0;
    this.maxHeight = void 0;
    this.paddingTop = void 0;
    this.paddingBottom = void 0;
    this.paddingLeft = void 0;
    this.paddingRight = void 0;
    this.axis = void 0;
    this.labelRotation = void 0;
    this.min = void 0;
    this.max = void 0;
    this._range = void 0;
    this.ticks = [];
    this._gridLineItems = null;
    this._labelItems = null;
    this._labelSizes = null;
    this._length = 0;
    this._maxLength = 0;
    this._longestTextCache = {};
    this._startPixel = void 0;
    this._endPixel = void 0;
    this._reversePixels = false;
    this._userMax = void 0;
    this._userMin = void 0;
    this._suggestedMax = void 0;
    this._suggestedMin = void 0;
    this._ticksLength = 0;
    this._borderValue = 0;
    this._cache = {};
    this._dataLimitsCached = false;
    this.$context = void 0;
  }
  init(options) {
    this.options = options.setContext(this.getContext());
    this.axis = options.axis;
    this._userMin = this.parse(options.min);
    this._userMax = this.parse(options.max);
    this._suggestedMin = this.parse(options.suggestedMin);
    this._suggestedMax = this.parse(options.suggestedMax);
  }
  parse(raw, index2) {
    return raw;
  }
  getUserBounds() {
    let { _userMin, _userMax, _suggestedMin, _suggestedMax } = this;
    _userMin = finiteOrDefault(_userMin, Number.POSITIVE_INFINITY);
    _userMax = finiteOrDefault(_userMax, Number.NEGATIVE_INFINITY);
    _suggestedMin = finiteOrDefault(_suggestedMin, Number.POSITIVE_INFINITY);
    _suggestedMax = finiteOrDefault(_suggestedMax, Number.NEGATIVE_INFINITY);
    return {
      min: finiteOrDefault(_userMin, _suggestedMin),
      max: finiteOrDefault(_userMax, _suggestedMax),
      minDefined: isNumberFinite(_userMin),
      maxDefined: isNumberFinite(_userMax)
    };
  }
  getMinMax(canStack) {
    let { min, max, minDefined, maxDefined } = this.getUserBounds();
    let range;
    if (minDefined && maxDefined) {
      return {
        min,
        max
      };
    }
    const metas = this.getMatchingVisibleMetas();
    for (let i = 0, ilen = metas.length; i < ilen; ++i) {
      range = metas[i].controller.getMinMax(this, canStack);
      if (!minDefined) {
        min = Math.min(min, range.min);
      }
      if (!maxDefined) {
        max = Math.max(max, range.max);
      }
    }
    min = maxDefined && min > max ? max : min;
    max = minDefined && min > max ? min : max;
    return {
      min: finiteOrDefault(min, finiteOrDefault(max, min)),
      max: finiteOrDefault(max, finiteOrDefault(min, max))
    };
  }
  getPadding() {
    return {
      left: this.paddingLeft || 0,
      top: this.paddingTop || 0,
      right: this.paddingRight || 0,
      bottom: this.paddingBottom || 0
    };
  }
  getTicks() {
    return this.ticks;
  }
  getLabels() {
    const data = this.chart.data;
    return this.options.labels || (this.isHorizontal() ? data.xLabels : data.yLabels) || data.labels || [];
  }
  getLabelItems(chartArea = this.chart.chartArea) {
    const items = this._labelItems || (this._labelItems = this._computeLabelItems(chartArea));
    return items;
  }
  beforeLayout() {
    this._cache = {};
    this._dataLimitsCached = false;
  }
  beforeUpdate() {
    callback(this.options.beforeUpdate, [
      this
    ]);
  }
  update(maxWidth, maxHeight, margins) {
    const { beginAtZero, grace, ticks: tickOpts } = this.options;
    const sampleSize = tickOpts.sampleSize;
    this.beforeUpdate();
    this.maxWidth = maxWidth;
    this.maxHeight = maxHeight;
    this._margins = margins = Object.assign({
      left: 0,
      right: 0,
      top: 0,
      bottom: 0
    }, margins);
    this.ticks = null;
    this._labelSizes = null;
    this._gridLineItems = null;
    this._labelItems = null;
    this.beforeSetDimensions();
    this.setDimensions();
    this.afterSetDimensions();
    this._maxLength = this.isHorizontal() ? this.width + margins.left + margins.right : this.height + margins.top + margins.bottom;
    if (!this._dataLimitsCached) {
      this.beforeDataLimits();
      this.determineDataLimits();
      this.afterDataLimits();
      this._range = _addGrace(this, grace, beginAtZero);
      this._dataLimitsCached = true;
    }
    this.beforeBuildTicks();
    this.ticks = this.buildTicks() || [];
    this.afterBuildTicks();
    const samplingEnabled = sampleSize < this.ticks.length;
    this._convertTicksToLabels(samplingEnabled ? sample(this.ticks, sampleSize) : this.ticks);
    this.configure();
    this.beforeCalculateLabelRotation();
    this.calculateLabelRotation();
    this.afterCalculateLabelRotation();
    if (tickOpts.display && (tickOpts.autoSkip || tickOpts.source === "auto")) {
      this.ticks = autoSkip(this, this.ticks);
      this._labelSizes = null;
      this.afterAutoSkip();
    }
    if (samplingEnabled) {
      this._convertTicksToLabels(this.ticks);
    }
    this.beforeFit();
    this.fit();
    this.afterFit();
    this.afterUpdate();
  }
  configure() {
    let reversePixels = this.options.reverse;
    let startPixel, endPixel;
    if (this.isHorizontal()) {
      startPixel = this.left;
      endPixel = this.right;
    } else {
      startPixel = this.top;
      endPixel = this.bottom;
      reversePixels = !reversePixels;
    }
    this._startPixel = startPixel;
    this._endPixel = endPixel;
    this._reversePixels = reversePixels;
    this._length = endPixel - startPixel;
    this._alignToPixels = this.options.alignToPixels;
  }
  afterUpdate() {
    callback(this.options.afterUpdate, [
      this
    ]);
  }
  beforeSetDimensions() {
    callback(this.options.beforeSetDimensions, [
      this
    ]);
  }
  setDimensions() {
    if (this.isHorizontal()) {
      this.width = this.maxWidth;
      this.left = 0;
      this.right = this.width;
    } else {
      this.height = this.maxHeight;
      this.top = 0;
      this.bottom = this.height;
    }
    this.paddingLeft = 0;
    this.paddingTop = 0;
    this.paddingRight = 0;
    this.paddingBottom = 0;
  }
  afterSetDimensions() {
    callback(this.options.afterSetDimensions, [
      this
    ]);
  }
  _callHooks(name2) {
    this.chart.notifyPlugins(name2, this.getContext());
    callback(this.options[name2], [
      this
    ]);
  }
  beforeDataLimits() {
    this._callHooks("beforeDataLimits");
  }
  determineDataLimits() {
  }
  afterDataLimits() {
    this._callHooks("afterDataLimits");
  }
  beforeBuildTicks() {
    this._callHooks("beforeBuildTicks");
  }
  buildTicks() {
    return [];
  }
  afterBuildTicks() {
    this._callHooks("afterBuildTicks");
  }
  beforeTickToLabelConversion() {
    callback(this.options.beforeTickToLabelConversion, [
      this
    ]);
  }
  generateTickLabels(ticks) {
    const tickOpts = this.options.ticks;
    let i, ilen, tick;
    for (i = 0, ilen = ticks.length; i < ilen; i++) {
      tick = ticks[i];
      tick.label = callback(tickOpts.callback, [
        tick.value,
        i,
        ticks
      ], this);
    }
  }
  afterTickToLabelConversion() {
    callback(this.options.afterTickToLabelConversion, [
      this
    ]);
  }
  beforeCalculateLabelRotation() {
    callback(this.options.beforeCalculateLabelRotation, [
      this
    ]);
  }
  calculateLabelRotation() {
    const options = this.options;
    const tickOpts = options.ticks;
    const numTicks = getTicksLimit(this.ticks.length, options.ticks.maxTicksLimit);
    const minRotation = tickOpts.minRotation || 0;
    const maxRotation = tickOpts.maxRotation;
    let labelRotation = minRotation;
    let tickWidth, maxHeight, maxLabelDiagonal;
    if (!this._isVisible() || !tickOpts.display || minRotation >= maxRotation || numTicks <= 1 || !this.isHorizontal()) {
      this.labelRotation = minRotation;
      return;
    }
    const labelSizes = this._getLabelSizes();
    const maxLabelWidth = labelSizes.widest.width;
    const maxLabelHeight = labelSizes.highest.height;
    const maxWidth = _limitValue(this.chart.width - maxLabelWidth, 0, this.maxWidth);
    tickWidth = options.offset ? this.maxWidth / numTicks : maxWidth / (numTicks - 1);
    if (maxLabelWidth + 6 > tickWidth) {
      tickWidth = maxWidth / (numTicks - (options.offset ? 0.5 : 1));
      maxHeight = this.maxHeight - getTickMarkLength(options.grid) - tickOpts.padding - getTitleHeight(options.title, this.chart.options.font);
      maxLabelDiagonal = Math.sqrt(maxLabelWidth * maxLabelWidth + maxLabelHeight * maxLabelHeight);
      labelRotation = toDegrees(Math.min(Math.asin(_limitValue((labelSizes.highest.height + 6) / tickWidth, -1, 1)), Math.asin(_limitValue(maxHeight / maxLabelDiagonal, -1, 1)) - Math.asin(_limitValue(maxLabelHeight / maxLabelDiagonal, -1, 1))));
      labelRotation = Math.max(minRotation, Math.min(maxRotation, labelRotation));
    }
    this.labelRotation = labelRotation;
  }
  afterCalculateLabelRotation() {
    callback(this.options.afterCalculateLabelRotation, [
      this
    ]);
  }
  afterAutoSkip() {
  }
  beforeFit() {
    callback(this.options.beforeFit, [
      this
    ]);
  }
  fit() {
    const minSize = {
      width: 0,
      height: 0
    };
    const { chart, options: { ticks: tickOpts, title: titleOpts, grid: gridOpts } } = this;
    const display = this._isVisible();
    const isHorizontal = this.isHorizontal();
    if (display) {
      const titleHeight = getTitleHeight(titleOpts, chart.options.font);
      if (isHorizontal) {
        minSize.width = this.maxWidth;
        minSize.height = getTickMarkLength(gridOpts) + titleHeight;
      } else {
        minSize.height = this.maxHeight;
        minSize.width = getTickMarkLength(gridOpts) + titleHeight;
      }
      if (tickOpts.display && this.ticks.length) {
        const { first, last, widest, highest } = this._getLabelSizes();
        const tickPadding = tickOpts.padding * 2;
        const angleRadians = toRadians(this.labelRotation);
        const cos = Math.cos(angleRadians);
        const sin = Math.sin(angleRadians);
        if (isHorizontal) {
          const labelHeight = tickOpts.mirror ? 0 : sin * widest.width + cos * highest.height;
          minSize.height = Math.min(this.maxHeight, minSize.height + labelHeight + tickPadding);
        } else {
          const labelWidth = tickOpts.mirror ? 0 : cos * widest.width + sin * highest.height;
          minSize.width = Math.min(this.maxWidth, minSize.width + labelWidth + tickPadding);
        }
        this._calculatePadding(first, last, sin, cos);
      }
    }
    this._handleMargins();
    if (isHorizontal) {
      this.width = this._length = chart.width - this._margins.left - this._margins.right;
      this.height = minSize.height;
    } else {
      this.width = minSize.width;
      this.height = this._length = chart.height - this._margins.top - this._margins.bottom;
    }
  }
  _calculatePadding(first, last, sin, cos) {
    const { ticks: { align, padding }, position } = this.options;
    const isRotated = this.labelRotation !== 0;
    const labelsBelowTicks = position !== "top" && this.axis === "x";
    if (this.isHorizontal()) {
      const offsetLeft = this.getPixelForTick(0) - this.left;
      const offsetRight = this.right - this.getPixelForTick(this.ticks.length - 1);
      let paddingLeft = 0;
      let paddingRight = 0;
      if (isRotated) {
        if (labelsBelowTicks) {
          paddingLeft = cos * first.width;
          paddingRight = sin * last.height;
        } else {
          paddingLeft = sin * first.height;
          paddingRight = cos * last.width;
        }
      } else if (align === "start") {
        paddingRight = last.width;
      } else if (align === "end") {
        paddingLeft = first.width;
      } else if (align !== "inner") {
        paddingLeft = first.width / 2;
        paddingRight = last.width / 2;
      }
      this.paddingLeft = Math.max((paddingLeft - offsetLeft + padding) * this.width / (this.width - offsetLeft), 0);
      this.paddingRight = Math.max((paddingRight - offsetRight + padding) * this.width / (this.width - offsetRight), 0);
    } else {
      let paddingTop = last.height / 2;
      let paddingBottom = first.height / 2;
      if (align === "start") {
        paddingTop = 0;
        paddingBottom = first.height;
      } else if (align === "end") {
        paddingTop = last.height;
        paddingBottom = 0;
      }
      this.paddingTop = paddingTop + padding;
      this.paddingBottom = paddingBottom + padding;
    }
  }
  _handleMargins() {
    if (this._margins) {
      this._margins.left = Math.max(this.paddingLeft, this._margins.left);
      this._margins.top = Math.max(this.paddingTop, this._margins.top);
      this._margins.right = Math.max(this.paddingRight, this._margins.right);
      this._margins.bottom = Math.max(this.paddingBottom, this._margins.bottom);
    }
  }
  afterFit() {
    callback(this.options.afterFit, [
      this
    ]);
  }
  isHorizontal() {
    const { axis, position } = this.options;
    return position === "top" || position === "bottom" || axis === "x";
  }
  isFullSize() {
    return this.options.fullSize;
  }
  _convertTicksToLabels(ticks) {
    this.beforeTickToLabelConversion();
    this.generateTickLabels(ticks);
    let i, ilen;
    for (i = 0, ilen = ticks.length; i < ilen; i++) {
      if (isNullOrUndef(ticks[i].label)) {
        ticks.splice(i, 1);
        ilen--;
        i--;
      }
    }
    this.afterTickToLabelConversion();
  }
  _getLabelSizes() {
    let labelSizes = this._labelSizes;
    if (!labelSizes) {
      const sampleSize = this.options.ticks.sampleSize;
      let ticks = this.ticks;
      if (sampleSize < ticks.length) {
        ticks = sample(ticks, sampleSize);
      }
      this._labelSizes = labelSizes = this._computeLabelSizes(ticks, ticks.length, this.options.ticks.maxTicksLimit);
    }
    return labelSizes;
  }
  _computeLabelSizes(ticks, length, maxTicksLimit) {
    const { ctx, _longestTextCache: caches } = this;
    const widths = [];
    const heights = [];
    const increment = Math.floor(length / getTicksLimit(length, maxTicksLimit));
    let widestLabelSize = 0;
    let highestLabelSize = 0;
    let i, j, jlen, label, tickFont, fontString, cache, lineHeight, width, height, nestedLabel;
    for (i = 0; i < length; i += increment) {
      label = ticks[i].label;
      tickFont = this._resolveTickFontOptions(i);
      ctx.font = fontString = tickFont.string;
      cache = caches[fontString] = caches[fontString] || {
        data: {},
        gc: []
      };
      lineHeight = tickFont.lineHeight;
      width = height = 0;
      if (!isNullOrUndef(label) && !isArray(label)) {
        width = _measureText(ctx, cache.data, cache.gc, width, label);
        height = lineHeight;
      } else if (isArray(label)) {
        for (j = 0, jlen = label.length; j < jlen; ++j) {
          nestedLabel = label[j];
          if (!isNullOrUndef(nestedLabel) && !isArray(nestedLabel)) {
            width = _measureText(ctx, cache.data, cache.gc, width, nestedLabel);
            height += lineHeight;
          }
        }
      }
      widths.push(width);
      heights.push(height);
      widestLabelSize = Math.max(width, widestLabelSize);
      highestLabelSize = Math.max(height, highestLabelSize);
    }
    garbageCollect(caches, length);
    const widest = widths.indexOf(widestLabelSize);
    const highest = heights.indexOf(highestLabelSize);
    const valueAt = (idx) => ({
      width: widths[idx] || 0,
      height: heights[idx] || 0
    });
    return {
      first: valueAt(0),
      last: valueAt(length - 1),
      widest: valueAt(widest),
      highest: valueAt(highest),
      widths,
      heights
    };
  }
  getLabelForValue(value) {
    return value;
  }
  getPixelForValue(value, index2) {
    return NaN;
  }
  getValueForPixel(pixel) {
  }
  getPixelForTick(index2) {
    const ticks = this.ticks;
    if (index2 < 0 || index2 > ticks.length - 1) {
      return null;
    }
    return this.getPixelForValue(ticks[index2].value);
  }
  getPixelForDecimal(decimal) {
    if (this._reversePixels) {
      decimal = 1 - decimal;
    }
    const pixel = this._startPixel + decimal * this._length;
    return _int16Range(this._alignToPixels ? _alignPixel(this.chart, pixel, 0) : pixel);
  }
  getDecimalForPixel(pixel) {
    const decimal = (pixel - this._startPixel) / this._length;
    return this._reversePixels ? 1 - decimal : decimal;
  }
  getBasePixel() {
    return this.getPixelForValue(this.getBaseValue());
  }
  getBaseValue() {
    const { min, max } = this;
    return min < 0 && max < 0 ? max : min > 0 && max > 0 ? min : 0;
  }
  getContext(index2) {
    const ticks = this.ticks || [];
    if (index2 >= 0 && index2 < ticks.length) {
      const tick = ticks[index2];
      return tick.$context || (tick.$context = createTickContext(this.getContext(), index2, tick));
    }
    return this.$context || (this.$context = createScaleContext(this.chart.getContext(), this));
  }
  _tickSize() {
    const optionTicks = this.options.ticks;
    const rot = toRadians(this.labelRotation);
    const cos = Math.abs(Math.cos(rot));
    const sin = Math.abs(Math.sin(rot));
    const labelSizes = this._getLabelSizes();
    const padding = optionTicks.autoSkipPadding || 0;
    const w = labelSizes ? labelSizes.widest.width + padding : 0;
    const h = labelSizes ? labelSizes.highest.height + padding : 0;
    return this.isHorizontal() ? h * cos > w * sin ? w / cos : h / sin : h * sin < w * cos ? h / cos : w / sin;
  }
  _isVisible() {
    const display = this.options.display;
    if (display !== "auto") {
      return !!display;
    }
    return this.getMatchingVisibleMetas().length > 0;
  }
  _computeGridLineItems(chartArea) {
    const axis = this.axis;
    const chart = this.chart;
    const options = this.options;
    const { grid, position, border } = options;
    const offset = grid.offset;
    const isHorizontal = this.isHorizontal();
    const ticks = this.ticks;
    const ticksLength = ticks.length + (offset ? 1 : 0);
    const tl = getTickMarkLength(grid);
    const items = [];
    const borderOpts = border.setContext(this.getContext());
    const axisWidth = borderOpts.display ? borderOpts.width : 0;
    const axisHalfWidth = axisWidth / 2;
    const alignBorderValue = function(pixel) {
      return _alignPixel(chart, pixel, axisWidth);
    };
    let borderValue, i, lineValue, alignedLineValue;
    let tx1, ty1, tx2, ty2, x1, y1, x2, y2;
    if (position === "top") {
      borderValue = alignBorderValue(this.bottom);
      ty1 = this.bottom - tl;
      ty2 = borderValue - axisHalfWidth;
      y1 = alignBorderValue(chartArea.top) + axisHalfWidth;
      y2 = chartArea.bottom;
    } else if (position === "bottom") {
      borderValue = alignBorderValue(this.top);
      y1 = chartArea.top;
      y2 = alignBorderValue(chartArea.bottom) - axisHalfWidth;
      ty1 = borderValue + axisHalfWidth;
      ty2 = this.top + tl;
    } else if (position === "left") {
      borderValue = alignBorderValue(this.right);
      tx1 = this.right - tl;
      tx2 = borderValue - axisHalfWidth;
      x1 = alignBorderValue(chartArea.left) + axisHalfWidth;
      x2 = chartArea.right;
    } else if (position === "right") {
      borderValue = alignBorderValue(this.left);
      x1 = chartArea.left;
      x2 = alignBorderValue(chartArea.right) - axisHalfWidth;
      tx1 = borderValue + axisHalfWidth;
      tx2 = this.left + tl;
    } else if (axis === "x") {
      if (position === "center") {
        borderValue = alignBorderValue((chartArea.top + chartArea.bottom) / 2 + 0.5);
      } else if (isObject(position)) {
        const positionAxisID = Object.keys(position)[0];
        const value = position[positionAxisID];
        borderValue = alignBorderValue(this.chart.scales[positionAxisID].getPixelForValue(value));
      }
      y1 = chartArea.top;
      y2 = chartArea.bottom;
      ty1 = borderValue + axisHalfWidth;
      ty2 = ty1 + tl;
    } else if (axis === "y") {
      if (position === "center") {
        borderValue = alignBorderValue((chartArea.left + chartArea.right) / 2);
      } else if (isObject(position)) {
        const positionAxisID1 = Object.keys(position)[0];
        const value1 = position[positionAxisID1];
        borderValue = alignBorderValue(this.chart.scales[positionAxisID1].getPixelForValue(value1));
      }
      tx1 = borderValue - axisHalfWidth;
      tx2 = tx1 - tl;
      x1 = chartArea.left;
      x2 = chartArea.right;
    }
    const limit = valueOrDefault(options.ticks.maxTicksLimit, ticksLength);
    const step = Math.max(1, Math.ceil(ticksLength / limit));
    for (i = 0; i < ticksLength; i += step) {
      const context = this.getContext(i);
      const optsAtIndex = grid.setContext(context);
      const optsAtIndexBorder = border.setContext(context);
      const lineWidth = optsAtIndex.lineWidth;
      const lineColor = optsAtIndex.color;
      const borderDash = optsAtIndexBorder.dash || [];
      const borderDashOffset = optsAtIndexBorder.dashOffset;
      const tickWidth = optsAtIndex.tickWidth;
      const tickColor = optsAtIndex.tickColor;
      const tickBorderDash = optsAtIndex.tickBorderDash || [];
      const tickBorderDashOffset = optsAtIndex.tickBorderDashOffset;
      lineValue = getPixelForGridLine(this, i, offset);
      if (lineValue === void 0) {
        continue;
      }
      alignedLineValue = _alignPixel(chart, lineValue, lineWidth);
      if (isHorizontal) {
        tx1 = tx2 = x1 = x2 = alignedLineValue;
      } else {
        ty1 = ty2 = y1 = y2 = alignedLineValue;
      }
      items.push({
        tx1,
        ty1,
        tx2,
        ty2,
        x1,
        y1,
        x2,
        y2,
        width: lineWidth,
        color: lineColor,
        borderDash,
        borderDashOffset,
        tickWidth,
        tickColor,
        tickBorderDash,
        tickBorderDashOffset
      });
    }
    this._ticksLength = ticksLength;
    this._borderValue = borderValue;
    return items;
  }
  _computeLabelItems(chartArea) {
    const axis = this.axis;
    const options = this.options;
    const { position, ticks: optionTicks } = options;
    const isHorizontal = this.isHorizontal();
    const ticks = this.ticks;
    const { align, crossAlign, padding, mirror } = optionTicks;
    const tl = getTickMarkLength(options.grid);
    const tickAndPadding = tl + padding;
    const hTickAndPadding = mirror ? -padding : tickAndPadding;
    const rotation = -toRadians(this.labelRotation);
    const items = [];
    let i, ilen, tick, label, x, y, textAlign, pixel, font, lineHeight, lineCount, textOffset;
    let textBaseline = "middle";
    if (position === "top") {
      y = this.bottom - hTickAndPadding;
      textAlign = this._getXAxisLabelAlignment();
    } else if (position === "bottom") {
      y = this.top + hTickAndPadding;
      textAlign = this._getXAxisLabelAlignment();
    } else if (position === "left") {
      const ret = this._getYAxisLabelAlignment(tl);
      textAlign = ret.textAlign;
      x = ret.x;
    } else if (position === "right") {
      const ret1 = this._getYAxisLabelAlignment(tl);
      textAlign = ret1.textAlign;
      x = ret1.x;
    } else if (axis === "x") {
      if (position === "center") {
        y = (chartArea.top + chartArea.bottom) / 2 + tickAndPadding;
      } else if (isObject(position)) {
        const positionAxisID = Object.keys(position)[0];
        const value = position[positionAxisID];
        y = this.chart.scales[positionAxisID].getPixelForValue(value) + tickAndPadding;
      }
      textAlign = this._getXAxisLabelAlignment();
    } else if (axis === "y") {
      if (position === "center") {
        x = (chartArea.left + chartArea.right) / 2 - tickAndPadding;
      } else if (isObject(position)) {
        const positionAxisID1 = Object.keys(position)[0];
        const value1 = position[positionAxisID1];
        x = this.chart.scales[positionAxisID1].getPixelForValue(value1);
      }
      textAlign = this._getYAxisLabelAlignment(tl).textAlign;
    }
    if (axis === "y") {
      if (align === "start") {
        textBaseline = "top";
      } else if (align === "end") {
        textBaseline = "bottom";
      }
    }
    const labelSizes = this._getLabelSizes();
    for (i = 0, ilen = ticks.length; i < ilen; ++i) {
      tick = ticks[i];
      label = tick.label;
      const optsAtIndex = optionTicks.setContext(this.getContext(i));
      pixel = this.getPixelForTick(i) + optionTicks.labelOffset;
      font = this._resolveTickFontOptions(i);
      lineHeight = font.lineHeight;
      lineCount = isArray(label) ? label.length : 1;
      const halfCount = lineCount / 2;
      const color2 = optsAtIndex.color;
      const strokeColor = optsAtIndex.textStrokeColor;
      const strokeWidth = optsAtIndex.textStrokeWidth;
      let tickTextAlign = textAlign;
      if (isHorizontal) {
        x = pixel;
        if (textAlign === "inner") {
          if (i === ilen - 1) {
            tickTextAlign = !this.options.reverse ? "right" : "left";
          } else if (i === 0) {
            tickTextAlign = !this.options.reverse ? "left" : "right";
          } else {
            tickTextAlign = "center";
          }
        }
        if (position === "top") {
          if (crossAlign === "near" || rotation !== 0) {
            textOffset = -lineCount * lineHeight + lineHeight / 2;
          } else if (crossAlign === "center") {
            textOffset = -labelSizes.highest.height / 2 - halfCount * lineHeight + lineHeight;
          } else {
            textOffset = -labelSizes.highest.height + lineHeight / 2;
          }
        } else {
          if (crossAlign === "near" || rotation !== 0) {
            textOffset = lineHeight / 2;
          } else if (crossAlign === "center") {
            textOffset = labelSizes.highest.height / 2 - halfCount * lineHeight;
          } else {
            textOffset = labelSizes.highest.height - lineCount * lineHeight;
          }
        }
        if (mirror) {
          textOffset *= -1;
        }
        if (rotation !== 0 && !optsAtIndex.showLabelBackdrop) {
          x += lineHeight / 2 * Math.sin(rotation);
        }
      } else {
        y = pixel;
        textOffset = (1 - lineCount) * lineHeight / 2;
      }
      let backdrop;
      if (optsAtIndex.showLabelBackdrop) {
        const labelPadding = toPadding(optsAtIndex.backdropPadding);
        const height = labelSizes.heights[i];
        const width = labelSizes.widths[i];
        let top = textOffset - labelPadding.top;
        let left = 0 - labelPadding.left;
        switch (textBaseline) {
          case "middle":
            top -= height / 2;
            break;
          case "bottom":
            top -= height;
            break;
        }
        switch (textAlign) {
          case "center":
            left -= width / 2;
            break;
          case "right":
            left -= width;
            break;
        }
        backdrop = {
          left,
          top,
          width: width + labelPadding.width,
          height: height + labelPadding.height,
          color: optsAtIndex.backdropColor
        };
      }
      items.push({
        label,
        font,
        textOffset,
        options: {
          rotation,
          color: color2,
          strokeColor,
          strokeWidth,
          textAlign: tickTextAlign,
          textBaseline,
          translation: [
            x,
            y
          ],
          backdrop
        }
      });
    }
    return items;
  }
  _getXAxisLabelAlignment() {
    const { position, ticks } = this.options;
    const rotation = -toRadians(this.labelRotation);
    if (rotation) {
      return position === "top" ? "left" : "right";
    }
    let align = "center";
    if (ticks.align === "start") {
      align = "left";
    } else if (ticks.align === "end") {
      align = "right";
    } else if (ticks.align === "inner") {
      align = "inner";
    }
    return align;
  }
  _getYAxisLabelAlignment(tl) {
    const { position, ticks: { crossAlign, mirror, padding } } = this.options;
    const labelSizes = this._getLabelSizes();
    const tickAndPadding = tl + padding;
    const widest = labelSizes.widest.width;
    let textAlign;
    let x;
    if (position === "left") {
      if (mirror) {
        x = this.right + padding;
        if (crossAlign === "near") {
          textAlign = "left";
        } else if (crossAlign === "center") {
          textAlign = "center";
          x += widest / 2;
        } else {
          textAlign = "right";
          x += widest;
        }
      } else {
        x = this.right - tickAndPadding;
        if (crossAlign === "near") {
          textAlign = "right";
        } else if (crossAlign === "center") {
          textAlign = "center";
          x -= widest / 2;
        } else {
          textAlign = "left";
          x = this.left;
        }
      }
    } else if (position === "right") {
      if (mirror) {
        x = this.left + padding;
        if (crossAlign === "near") {
          textAlign = "right";
        } else if (crossAlign === "center") {
          textAlign = "center";
          x -= widest / 2;
        } else {
          textAlign = "left";
          x -= widest;
        }
      } else {
        x = this.left + tickAndPadding;
        if (crossAlign === "near") {
          textAlign = "left";
        } else if (crossAlign === "center") {
          textAlign = "center";
          x += widest / 2;
        } else {
          textAlign = "right";
          x = this.right;
        }
      }
    } else {
      textAlign = "right";
    }
    return {
      textAlign,
      x
    };
  }
  _computeLabelArea() {
    if (this.options.ticks.mirror) {
      return;
    }
    const chart = this.chart;
    const position = this.options.position;
    if (position === "left" || position === "right") {
      return {
        top: 0,
        left: this.left,
        bottom: chart.height,
        right: this.right
      };
    }
    if (position === "top" || position === "bottom") {
      return {
        top: this.top,
        left: 0,
        bottom: this.bottom,
        right: chart.width
      };
    }
  }
  drawBackground() {
    const { ctx, options: { backgroundColor }, left, top, width, height } = this;
    if (backgroundColor) {
      ctx.save();
      ctx.fillStyle = backgroundColor;
      ctx.fillRect(left, top, width, height);
      ctx.restore();
    }
  }
  getLineWidthForValue(value) {
    const grid = this.options.grid;
    if (!this._isVisible() || !grid.display) {
      return 0;
    }
    const ticks = this.ticks;
    const index2 = ticks.findIndex((t) => t.value === value);
    if (index2 >= 0) {
      const opts = grid.setContext(this.getContext(index2));
      return opts.lineWidth;
    }
    return 0;
  }
  drawGrid(chartArea) {
    const grid = this.options.grid;
    const ctx = this.ctx;
    const items = this._gridLineItems || (this._gridLineItems = this._computeGridLineItems(chartArea));
    let i, ilen;
    const drawLine = (p1, p2, style) => {
      if (!style.width || !style.color) {
        return;
      }
      ctx.save();
      ctx.lineWidth = style.width;
      ctx.strokeStyle = style.color;
      ctx.setLineDash(style.borderDash || []);
      ctx.lineDashOffset = style.borderDashOffset;
      ctx.beginPath();
      ctx.moveTo(p1.x, p1.y);
      ctx.lineTo(p2.x, p2.y);
      ctx.stroke();
      ctx.restore();
    };
    if (grid.display) {
      for (i = 0, ilen = items.length; i < ilen; ++i) {
        const item = items[i];
        if (grid.drawOnChartArea) {
          drawLine({
            x: item.x1,
            y: item.y1
          }, {
            x: item.x2,
            y: item.y2
          }, item);
        }
        if (grid.drawTicks) {
          drawLine({
            x: item.tx1,
            y: item.ty1
          }, {
            x: item.tx2,
            y: item.ty2
          }, {
            color: item.tickColor,
            width: item.tickWidth,
            borderDash: item.tickBorderDash,
            borderDashOffset: item.tickBorderDashOffset
          });
        }
      }
    }
  }
  drawBorder() {
    const { chart, ctx, options: { border, grid } } = this;
    const borderOpts = border.setContext(this.getContext());
    const axisWidth = border.display ? borderOpts.width : 0;
    if (!axisWidth) {
      return;
    }
    const lastLineWidth = grid.setContext(this.getContext(0)).lineWidth;
    const borderValue = this._borderValue;
    let x1, x2, y1, y2;
    if (this.isHorizontal()) {
      x1 = _alignPixel(chart, this.left, axisWidth) - axisWidth / 2;
      x2 = _alignPixel(chart, this.right, lastLineWidth) + lastLineWidth / 2;
      y1 = y2 = borderValue;
    } else {
      y1 = _alignPixel(chart, this.top, axisWidth) - axisWidth / 2;
      y2 = _alignPixel(chart, this.bottom, lastLineWidth) + lastLineWidth / 2;
      x1 = x2 = borderValue;
    }
    ctx.save();
    ctx.lineWidth = borderOpts.width;
    ctx.strokeStyle = borderOpts.color;
    ctx.beginPath();
    ctx.moveTo(x1, y1);
    ctx.lineTo(x2, y2);
    ctx.stroke();
    ctx.restore();
  }
  drawLabels(chartArea) {
    const optionTicks = this.options.ticks;
    if (!optionTicks.display) {
      return;
    }
    const ctx = this.ctx;
    const area = this._computeLabelArea();
    if (area) {
      clipArea(ctx, area);
    }
    const items = this.getLabelItems(chartArea);
    for (const item of items) {
      const renderTextOptions = item.options;
      const tickFont = item.font;
      const label = item.label;
      const y = item.textOffset;
      renderText(ctx, label, 0, y, tickFont, renderTextOptions);
    }
    if (area) {
      unclipArea(ctx);
    }
  }
  drawTitle() {
    const { ctx, options: { position, title, reverse } } = this;
    if (!title.display) {
      return;
    }
    const font = toFont(title.font);
    const padding = toPadding(title.padding);
    const align = title.align;
    let offset = font.lineHeight / 2;
    if (position === "bottom" || position === "center" || isObject(position)) {
      offset += padding.bottom;
      if (isArray(title.text)) {
        offset += font.lineHeight * (title.text.length - 1);
      }
    } else {
      offset += padding.top;
    }
    const { titleX, titleY, maxWidth, rotation } = titleArgs(this, offset, position, align);
    renderText(ctx, title.text, 0, 0, font, {
      color: title.color,
      maxWidth,
      rotation,
      textAlign: titleAlign(align, position, reverse),
      textBaseline: "middle",
      translation: [
        titleX,
        titleY
      ]
    });
  }
  draw(chartArea) {
    if (!this._isVisible()) {
      return;
    }
    this.drawBackground();
    this.drawGrid(chartArea);
    this.drawBorder();
    this.drawTitle();
    this.drawLabels(chartArea);
  }
  _layers() {
    const opts = this.options;
    const tz = opts.ticks && opts.ticks.z || 0;
    const gz = valueOrDefault(opts.grid && opts.grid.z, -1);
    const bz = valueOrDefault(opts.border && opts.border.z, 0);
    if (!this._isVisible() || this.draw !== Scale.prototype.draw) {
      return [
        {
          z: tz,
          draw: (chartArea) => {
            this.draw(chartArea);
          }
        }
      ];
    }
    return [
      {
        z: gz,
        draw: (chartArea) => {
          this.drawBackground();
          this.drawGrid(chartArea);
          this.drawTitle();
        }
      },
      {
        z: bz,
        draw: () => {
          this.drawBorder();
        }
      },
      {
        z: tz,
        draw: (chartArea) => {
          this.drawLabels(chartArea);
        }
      }
    ];
  }
  getMatchingVisibleMetas(type) {
    const metas = this.chart.getSortedVisibleDatasetMetas();
    const axisID = this.axis + "AxisID";
    const result = [];
    let i, ilen;
    for (i = 0, ilen = metas.length; i < ilen; ++i) {
      const meta = metas[i];
      if (meta[axisID] === this.id && (!type || meta.type === type)) {
        result.push(meta);
      }
    }
    return result;
  }
  _resolveTickFontOptions(index2) {
    const opts = this.options.ticks.setContext(this.getContext(index2));
    return toFont(opts.font);
  }
  _maxDigits() {
    const fontSize = this._resolveTickFontOptions(0).lineHeight;
    return (this.isHorizontal() ? this.width : this.height) / fontSize;
  }
}
class TypedRegistry {
  constructor(type, scope, override) {
    this.type = type;
    this.scope = scope;
    this.override = override;
    this.items = /* @__PURE__ */ Object.create(null);
  }
  isForType(type) {
    return Object.prototype.isPrototypeOf.call(this.type.prototype, type.prototype);
  }
  register(item) {
    const proto = Object.getPrototypeOf(item);
    let parentScope;
    if (isIChartComponent(proto)) {
      parentScope = this.register(proto);
    }
    const items = this.items;
    const id = item.id;
    const scope = this.scope + "." + id;
    if (!id) {
      throw new Error("class does not have id: " + item);
    }
    if (id in items) {
      return scope;
    }
    items[id] = item;
    registerDefaults(item, scope, parentScope);
    if (this.override) {
      defaults.override(item.id, item.overrides);
    }
    return scope;
  }
  get(id) {
    return this.items[id];
  }
  unregister(item) {
    const items = this.items;
    const id = item.id;
    const scope = this.scope;
    if (id in items) {
      delete items[id];
    }
    if (scope && id in defaults[scope]) {
      delete defaults[scope][id];
      if (this.override) {
        delete overrides[id];
      }
    }
  }
}
function registerDefaults(item, scope, parentScope) {
  const itemDefaults = merge(/* @__PURE__ */ Object.create(null), [
    parentScope ? defaults.get(parentScope) : {},
    defaults.get(scope),
    item.defaults
  ]);
  defaults.set(scope, itemDefaults);
  if (item.defaultRoutes) {
    routeDefaults(scope, item.defaultRoutes);
  }
  if (item.descriptors) {
    defaults.describe(scope, item.descriptors);
  }
}
function routeDefaults(scope, routes) {
  Object.keys(routes).forEach((property) => {
    const propertyParts = property.split(".");
    const sourceName = propertyParts.pop();
    const sourceScope = [
      scope
    ].concat(propertyParts).join(".");
    const parts = routes[property].split(".");
    const targetName = parts.pop();
    const targetScope = parts.join(".");
    defaults.route(sourceScope, sourceName, targetScope, targetName);
  });
}
function isIChartComponent(proto) {
  return "id" in proto && "defaults" in proto;
}
class Registry {
  constructor() {
    this.controllers = new TypedRegistry(DatasetController, "datasets", true);
    this.elements = new TypedRegistry(Element, "elements");
    this.plugins = new TypedRegistry(Object, "plugins");
    this.scales = new TypedRegistry(Scale, "scales");
    this._typedRegistries = [
      this.controllers,
      this.scales,
      this.elements
    ];
  }
  add(...args) {
    this._each("register", args);
  }
  remove(...args) {
    this._each("unregister", args);
  }
  addControllers(...args) {
    this._each("register", args, this.controllers);
  }
  addElements(...args) {
    this._each("register", args, this.elements);
  }
  addPlugins(...args) {
    this._each("register", args, this.plugins);
  }
  addScales(...args) {
    this._each("register", args, this.scales);
  }
  getController(id) {
    return this._get(id, this.controllers, "controller");
  }
  getElement(id) {
    return this._get(id, this.elements, "element");
  }
  getPlugin(id) {
    return this._get(id, this.plugins, "plugin");
  }
  getScale(id) {
    return this._get(id, this.scales, "scale");
  }
  removeControllers(...args) {
    this._each("unregister", args, this.controllers);
  }
  removeElements(...args) {
    this._each("unregister", args, this.elements);
  }
  removePlugins(...args) {
    this._each("unregister", args, this.plugins);
  }
  removeScales(...args) {
    this._each("unregister", args, this.scales);
  }
  _each(method, args, typedRegistry) {
    [
      ...args
    ].forEach((arg) => {
      const reg = typedRegistry || this._getRegistryForType(arg);
      if (typedRegistry || reg.isForType(arg) || reg === this.plugins && arg.id) {
        this._exec(method, reg, arg);
      } else {
        each(arg, (item) => {
          const itemReg = typedRegistry || this._getRegistryForType(item);
          this._exec(method, itemReg, item);
        });
      }
    });
  }
  _exec(method, registry2, component) {
    const camelMethod = _capitalize(method);
    callback(component["before" + camelMethod], [], component);
    registry2[method](component);
    callback(component["after" + camelMethod], [], component);
  }
  _getRegistryForType(type) {
    for (let i = 0; i < this._typedRegistries.length; i++) {
      const reg = this._typedRegistries[i];
      if (reg.isForType(type)) {
        return reg;
      }
    }
    return this.plugins;
  }
  _get(id, typedRegistry, type) {
    const item = typedRegistry.get(id);
    if (item === void 0) {
      throw new Error('"' + id + '" is not a registered ' + type + ".");
    }
    return item;
  }
}
var registry = /* @__PURE__ */ new Registry();
class PluginService {
  constructor() {
    this._init = [];
  }
  notify(chart, hook, args, filter) {
    if (hook === "beforeInit") {
      this._init = this._createDescriptors(chart, true);
      this._notify(this._init, chart, "install");
    }
    const descriptors2 = filter ? this._descriptors(chart).filter(filter) : this._descriptors(chart);
    const result = this._notify(descriptors2, chart, hook, args);
    if (hook === "afterDestroy") {
      this._notify(descriptors2, chart, "stop");
      this._notify(this._init, chart, "uninstall");
    }
    return result;
  }
  _notify(descriptors2, chart, hook, args) {
    args = args || {};
    for (const descriptor of descriptors2) {
      const plugin = descriptor.plugin;
      const method = plugin[hook];
      const params = [
        chart,
        args,
        descriptor.options
      ];
      if (callback(method, params, plugin) === false && args.cancelable) {
        return false;
      }
    }
    return true;
  }
  invalidate() {
    if (!isNullOrUndef(this._cache)) {
      this._oldCache = this._cache;
      this._cache = void 0;
    }
  }
  _descriptors(chart) {
    if (this._cache) {
      return this._cache;
    }
    const descriptors2 = this._cache = this._createDescriptors(chart);
    this._notifyStateChanges(chart);
    return descriptors2;
  }
  _createDescriptors(chart, all) {
    const config = chart && chart.config;
    const options = valueOrDefault(config.options && config.options.plugins, {});
    const plugins2 = allPlugins(config);
    return options === false && !all ? [] : createDescriptors(chart, plugins2, options, all);
  }
  _notifyStateChanges(chart) {
    const previousDescriptors = this._oldCache || [];
    const descriptors2 = this._cache;
    const diff = (a, b) => a.filter((x) => !b.some((y) => x.plugin.id === y.plugin.id));
    this._notify(diff(previousDescriptors, descriptors2), chart, "stop");
    this._notify(diff(descriptors2, previousDescriptors), chart, "start");
  }
}
function allPlugins(config) {
  const localIds = {};
  const plugins2 = [];
  const keys = Object.keys(registry.plugins.items);
  for (let i = 0; i < keys.length; i++) {
    plugins2.push(registry.getPlugin(keys[i]));
  }
  const local = config.plugins || [];
  for (let i1 = 0; i1 < local.length; i1++) {
    const plugin = local[i1];
    if (plugins2.indexOf(plugin) === -1) {
      plugins2.push(plugin);
      localIds[plugin.id] = true;
    }
  }
  return {
    plugins: plugins2,
    localIds
  };
}
function getOpts(options, all) {
  if (!all && options === false) {
    return null;
  }
  if (options === true) {
    return {};
  }
  return options;
}
function createDescriptors(chart, { plugins: plugins2, localIds }, options, all) {
  const result = [];
  const context = chart.getContext();
  for (const plugin of plugins2) {
    const id = plugin.id;
    const opts = getOpts(options[id], all);
    if (opts === null) {
      continue;
    }
    result.push({
      plugin,
      options: pluginOpts(chart.config, {
        plugin,
        local: localIds[id]
      }, opts, context)
    });
  }
  return result;
}
function pluginOpts(config, { plugin, local }, opts, context) {
  const keys = config.pluginScopeKeys(plugin);
  const scopes = config.getOptionScopes(opts, keys);
  if (local && plugin.defaults) {
    scopes.push(plugin.defaults);
  }
  return config.createResolver(scopes, context, [
    ""
  ], {
    scriptable: false,
    indexable: false,
    allKeys: true
  });
}
function getIndexAxis(type, options) {
  const datasetDefaults = defaults.datasets[type] || {};
  const datasetOptions = (options.datasets || {})[type] || {};
  return datasetOptions.indexAxis || options.indexAxis || datasetDefaults.indexAxis || "x";
}
function getAxisFromDefaultScaleID(id, indexAxis) {
  let axis = id;
  if (id === "_index_") {
    axis = indexAxis;
  } else if (id === "_value_") {
    axis = indexAxis === "x" ? "y" : "x";
  }
  return axis;
}
function getDefaultScaleIDFromAxis(axis, indexAxis) {
  return axis === indexAxis ? "_index_" : "_value_";
}
function axisFromPosition(position) {
  if (position === "top" || position === "bottom") {
    return "x";
  }
  if (position === "left" || position === "right") {
    return "y";
  }
}
function determineAxis(id, scaleOptions) {
  if (id === "x" || id === "y" || id === "r") {
    return id;
  }
  id = scaleOptions.axis || axisFromPosition(scaleOptions.position) || id.length > 1 && determineAxis(id[0].toLowerCase(), scaleOptions);
  if (id) {
    return id;
  }
  throw new Error(`Cannot determine type of '${name}' axis. Please provide 'axis' or 'position' option.`);
}
function mergeScaleConfig(config, options) {
  const chartDefaults = overrides[config.type] || {
    scales: {}
  };
  const configScales = options.scales || {};
  const chartIndexAxis = getIndexAxis(config.type, options);
  const scales2 = /* @__PURE__ */ Object.create(null);
  Object.keys(configScales).forEach((id) => {
    const scaleConf = configScales[id];
    if (!isObject(scaleConf)) {
      return console.error(`Invalid scale configuration for scale: ${id}`);
    }
    if (scaleConf._proxy) {
      return console.warn(`Ignoring resolver passed as options for scale: ${id}`);
    }
    const axis = determineAxis(id, scaleConf);
    const defaultId = getDefaultScaleIDFromAxis(axis, chartIndexAxis);
    const defaultScaleOptions = chartDefaults.scales || {};
    scales2[id] = mergeIf(/* @__PURE__ */ Object.create(null), [
      {
        axis
      },
      scaleConf,
      defaultScaleOptions[axis],
      defaultScaleOptions[defaultId]
    ]);
  });
  config.data.datasets.forEach((dataset) => {
    const type = dataset.type || config.type;
    const indexAxis = dataset.indexAxis || getIndexAxis(type, options);
    const datasetDefaults = overrides[type] || {};
    const defaultScaleOptions = datasetDefaults.scales || {};
    Object.keys(defaultScaleOptions).forEach((defaultID) => {
      const axis = getAxisFromDefaultScaleID(defaultID, indexAxis);
      const id = dataset[axis + "AxisID"] || axis;
      scales2[id] = scales2[id] || /* @__PURE__ */ Object.create(null);
      mergeIf(scales2[id], [
        {
          axis
        },
        configScales[id],
        defaultScaleOptions[defaultID]
      ]);
    });
  });
  Object.keys(scales2).forEach((key) => {
    const scale = scales2[key];
    mergeIf(scale, [
      defaults.scales[scale.type],
      defaults.scale
    ]);
  });
  return scales2;
}
function initOptions(config) {
  const options = config.options || (config.options = {});
  options.plugins = valueOrDefault(options.plugins, {});
  options.scales = mergeScaleConfig(config, options);
}
function initData(data) {
  data = data || {};
  data.datasets = data.datasets || [];
  data.labels = data.labels || [];
  return data;
}
function initConfig(config) {
  config = config || {};
  config.data = initData(config.data);
  initOptions(config);
  return config;
}
const keyCache = /* @__PURE__ */ new Map();
const keysCached = /* @__PURE__ */ new Set();
function cachedKeys(cacheKey, generate) {
  let keys = keyCache.get(cacheKey);
  if (!keys) {
    keys = generate();
    keyCache.set(cacheKey, keys);
    keysCached.add(keys);
  }
  return keys;
}
const addIfFound = (set2, obj, key) => {
  const opts = resolveObjectKey(obj, key);
  if (opts !== void 0) {
    set2.add(opts);
  }
};
class Config {
  constructor(config) {
    this._config = initConfig(config);
    this._scopeCache = /* @__PURE__ */ new Map();
    this._resolverCache = /* @__PURE__ */ new Map();
  }
  get platform() {
    return this._config.platform;
  }
  get type() {
    return this._config.type;
  }
  set type(type) {
    this._config.type = type;
  }
  get data() {
    return this._config.data;
  }
  set data(data) {
    this._config.data = initData(data);
  }
  get options() {
    return this._config.options;
  }
  set options(options) {
    this._config.options = options;
  }
  get plugins() {
    return this._config.plugins;
  }
  update() {
    const config = this._config;
    this.clearCache();
    initOptions(config);
  }
  clearCache() {
    this._scopeCache.clear();
    this._resolverCache.clear();
  }
  datasetScopeKeys(datasetType) {
    return cachedKeys(datasetType, () => [
      [
        `datasets.${datasetType}`,
        ""
      ]
    ]);
  }
  datasetAnimationScopeKeys(datasetType, transition) {
    return cachedKeys(`${datasetType}.transition.${transition}`, () => [
      [
        `datasets.${datasetType}.transitions.${transition}`,
        `transitions.${transition}`
      ],
      [
        `datasets.${datasetType}`,
        ""
      ]
    ]);
  }
  datasetElementScopeKeys(datasetType, elementType) {
    return cachedKeys(`${datasetType}-${elementType}`, () => [
      [
        `datasets.${datasetType}.elements.${elementType}`,
        `datasets.${datasetType}`,
        `elements.${elementType}`,
        ""
      ]
    ]);
  }
  pluginScopeKeys(plugin) {
    const id = plugin.id;
    const type = this.type;
    return cachedKeys(`${type}-plugin-${id}`, () => [
      [
        `plugins.${id}`,
        ...plugin.additionalOptionScopes || []
      ]
    ]);
  }
  _cachedScopes(mainScope, resetCache) {
    const _scopeCache = this._scopeCache;
    let cache = _scopeCache.get(mainScope);
    if (!cache || resetCache) {
      cache = /* @__PURE__ */ new Map();
      _scopeCache.set(mainScope, cache);
    }
    return cache;
  }
  getOptionScopes(mainScope, keyLists, resetCache) {
    const { options, type } = this;
    const cache = this._cachedScopes(mainScope, resetCache);
    const cached = cache.get(keyLists);
    if (cached) {
      return cached;
    }
    const scopes = /* @__PURE__ */ new Set();
    keyLists.forEach((keys) => {
      if (mainScope) {
        scopes.add(mainScope);
        keys.forEach((key) => addIfFound(scopes, mainScope, key));
      }
      keys.forEach((key) => addIfFound(scopes, options, key));
      keys.forEach((key) => addIfFound(scopes, overrides[type] || {}, key));
      keys.forEach((key) => addIfFound(scopes, defaults, key));
      keys.forEach((key) => addIfFound(scopes, descriptors, key));
    });
    const array = Array.from(scopes);
    if (array.length === 0) {
      array.push(/* @__PURE__ */ Object.create(null));
    }
    if (keysCached.has(keyLists)) {
      cache.set(keyLists, array);
    }
    return array;
  }
  chartOptionScopes() {
    const { options, type } = this;
    return [
      options,
      overrides[type] || {},
      defaults.datasets[type] || {},
      {
        type
      },
      defaults,
      descriptors
    ];
  }
  resolveNamedOptions(scopes, names2, context, prefixes = [
    ""
  ]) {
    const result = {
      $shared: true
    };
    const { resolver, subPrefixes } = getResolver(this._resolverCache, scopes, prefixes);
    let options = resolver;
    if (needContext(resolver, names2)) {
      result.$shared = false;
      context = isFunction(context) ? context() : context;
      const subResolver = this.createResolver(scopes, context, subPrefixes);
      options = _attachContext(resolver, context, subResolver);
    }
    for (const prop of names2) {
      result[prop] = options[prop];
    }
    return result;
  }
  createResolver(scopes, context, prefixes = [
    ""
  ], descriptorDefaults) {
    const { resolver } = getResolver(this._resolverCache, scopes, prefixes);
    return isObject(context) ? _attachContext(resolver, context, void 0, descriptorDefaults) : resolver;
  }
}
function getResolver(resolverCache, scopes, prefixes) {
  let cache = resolverCache.get(scopes);
  if (!cache) {
    cache = /* @__PURE__ */ new Map();
    resolverCache.set(scopes, cache);
  }
  const cacheKey = prefixes.join();
  let cached = cache.get(cacheKey);
  if (!cached) {
    const resolver = _createResolver(scopes, prefixes);
    cached = {
      resolver,
      subPrefixes: prefixes.filter((p) => !p.toLowerCase().includes("hover"))
    };
    cache.set(cacheKey, cached);
  }
  return cached;
}
const hasFunction = (value) => isObject(value) && Object.getOwnPropertyNames(value).reduce((acc, key) => acc || isFunction(value[key]), false);
function needContext(proxy, names2) {
  const { isScriptable, isIndexable } = _descriptors(proxy);
  for (const prop of names2) {
    const scriptable = isScriptable(prop);
    const indexable = isIndexable(prop);
    const value = (indexable || scriptable) && proxy[prop];
    if (scriptable && (isFunction(value) || hasFunction(value)) || indexable && isArray(value)) {
      return true;
    }
  }
  return false;
}
var version = "4.2.1";
const KNOWN_POSITIONS = [
  "top",
  "bottom",
  "left",
  "right",
  "chartArea"
];
function positionIsHorizontal(position, axis) {
  return position === "top" || position === "bottom" || KNOWN_POSITIONS.indexOf(position) === -1 && axis === "x";
}
function compare2Level(l1, l2) {
  return function(a, b) {
    return a[l1] === b[l1] ? a[l2] - b[l2] : a[l1] - b[l1];
  };
}
function onAnimationsComplete(context) {
  const chart = context.chart;
  const animationOptions = chart.options.animation;
  chart.notifyPlugins("afterRender");
  callback(animationOptions && animationOptions.onComplete, [
    context
  ], chart);
}
function onAnimationProgress(context) {
  const chart = context.chart;
  const animationOptions = chart.options.animation;
  callback(animationOptions && animationOptions.onProgress, [
    context
  ], chart);
}
function getCanvas(item) {
  if (_isDomSupported() && typeof item === "string") {
    item = document.getElementById(item);
  } else if (item && item.length) {
    item = item[0];
  }
  if (item && item.canvas) {
    item = item.canvas;
  }
  return item;
}
const instances = {};
const getChart = (key) => {
  const canvas = getCanvas(key);
  return Object.values(instances).filter((c) => c.canvas === canvas).pop();
};
function moveNumericKeys(obj, start, move) {
  const keys = Object.keys(obj);
  for (const key of keys) {
    const intKey = +key;
    if (intKey >= start) {
      const value = obj[key];
      delete obj[key];
      if (move > 0 || intKey > start) {
        obj[intKey + move] = value;
      }
    }
  }
}
function determineLastEvent(e, lastEvent, inChartArea, isClick) {
  if (!inChartArea || e.type === "mouseout") {
    return null;
  }
  if (isClick) {
    return lastEvent;
  }
  return e;
}
function getDatasetArea(meta) {
  const { xScale, yScale } = meta;
  if (xScale && yScale) {
    return {
      left: xScale.left,
      right: xScale.right,
      top: yScale.top,
      bottom: yScale.bottom
    };
  }
}
class Chart {
  static register(...items) {
    registry.add(...items);
    invalidatePlugins();
  }
  static unregister(...items) {
    registry.remove(...items);
    invalidatePlugins();
  }
  constructor(item, userConfig) {
    const config = this.config = new Config(userConfig);
    const initialCanvas = getCanvas(item);
    const existingChart = getChart(initialCanvas);
    if (existingChart) {
      throw new Error("Canvas is already in use. Chart with ID '" + existingChart.id + "' must be destroyed before the canvas with ID '" + existingChart.canvas.id + "' can be reused.");
    }
    const options = config.createResolver(config.chartOptionScopes(), this.getContext());
    this.platform = new (config.platform || _detectPlatform(initialCanvas))();
    this.platform.updateConfig(config);
    const context = this.platform.acquireContext(initialCanvas, options.aspectRatio);
    const canvas = context && context.canvas;
    const height = canvas && canvas.height;
    const width = canvas && canvas.width;
    this.id = uid();
    this.ctx = context;
    this.canvas = canvas;
    this.width = width;
    this.height = height;
    this._options = options;
    this._aspectRatio = this.aspectRatio;
    this._layers = [];
    this._metasets = [];
    this._stacks = void 0;
    this.boxes = [];
    this.currentDevicePixelRatio = void 0;
    this.chartArea = void 0;
    this._active = [];
    this._lastEvent = void 0;
    this._listeners = {};
    this._responsiveListeners = void 0;
    this._sortedMetasets = [];
    this.scales = {};
    this._plugins = new PluginService();
    this.$proxies = {};
    this._hiddenIndices = {};
    this.attached = false;
    this._animationsDisabled = void 0;
    this.$context = void 0;
    this._doResize = debounce((mode) => this.update(mode), options.resizeDelay || 0);
    this._dataChanges = [];
    instances[this.id] = this;
    if (!context || !canvas) {
      console.error("Failed to create chart: can't acquire context from the given item");
      return;
    }
    animator.listen(this, "complete", onAnimationsComplete);
    animator.listen(this, "progress", onAnimationProgress);
    this._initialize();
    if (this.attached) {
      this.update();
    }
  }
  get aspectRatio() {
    const { options: { aspectRatio, maintainAspectRatio }, width, height, _aspectRatio } = this;
    if (!isNullOrUndef(aspectRatio)) {
      return aspectRatio;
    }
    if (maintainAspectRatio && _aspectRatio) {
      return _aspectRatio;
    }
    return height ? width / height : null;
  }
  get data() {
    return this.config.data;
  }
  set data(data) {
    this.config.data = data;
  }
  get options() {
    return this._options;
  }
  set options(options) {
    this.config.options = options;
  }
  get registry() {
    return registry;
  }
  _initialize() {
    this.notifyPlugins("beforeInit");
    if (this.options.responsive) {
      this.resize();
    } else {
      retinaScale(this, this.options.devicePixelRatio);
    }
    this.bindEvents();
    this.notifyPlugins("afterInit");
    return this;
  }
  clear() {
    clearCanvas(this.canvas, this.ctx);
    return this;
  }
  stop() {
    animator.stop(this);
    return this;
  }
  resize(width, height) {
    if (!animator.running(this)) {
      this._resize(width, height);
    } else {
      this._resizeBeforeDraw = {
        width,
        height
      };
    }
  }
  _resize(width, height) {
    const options = this.options;
    const canvas = this.canvas;
    const aspectRatio = options.maintainAspectRatio && this.aspectRatio;
    const newSize = this.platform.getMaximumSize(canvas, width, height, aspectRatio);
    const newRatio = options.devicePixelRatio || this.platform.getDevicePixelRatio();
    const mode = this.width ? "resize" : "attach";
    this.width = newSize.width;
    this.height = newSize.height;
    this._aspectRatio = this.aspectRatio;
    if (!retinaScale(this, newRatio, true)) {
      return;
    }
    this.notifyPlugins("resize", {
      size: newSize
    });
    callback(options.onResize, [
      this,
      newSize
    ], this);
    if (this.attached) {
      if (this._doResize(mode)) {
        this.render();
      }
    }
  }
  ensureScalesHaveIDs() {
    const options = this.options;
    const scalesOptions = options.scales || {};
    each(scalesOptions, (axisOptions, axisID) => {
      axisOptions.id = axisID;
    });
  }
  buildOrUpdateScales() {
    const options = this.options;
    const scaleOpts = options.scales;
    const scales2 = this.scales;
    const updated = Object.keys(scales2).reduce((obj, id) => {
      obj[id] = false;
      return obj;
    }, {});
    let items = [];
    if (scaleOpts) {
      items = items.concat(Object.keys(scaleOpts).map((id) => {
        const scaleOptions = scaleOpts[id];
        const axis = determineAxis(id, scaleOptions);
        const isRadial = axis === "r";
        const isHorizontal = axis === "x";
        return {
          options: scaleOptions,
          dposition: isRadial ? "chartArea" : isHorizontal ? "bottom" : "left",
          dtype: isRadial ? "radialLinear" : isHorizontal ? "category" : "linear"
        };
      }));
    }
    each(items, (item) => {
      const scaleOptions = item.options;
      const id = scaleOptions.id;
      const axis = determineAxis(id, scaleOptions);
      const scaleType = valueOrDefault(scaleOptions.type, item.dtype);
      if (scaleOptions.position === void 0 || positionIsHorizontal(scaleOptions.position, axis) !== positionIsHorizontal(item.dposition)) {
        scaleOptions.position = item.dposition;
      }
      updated[id] = true;
      let scale = null;
      if (id in scales2 && scales2[id].type === scaleType) {
        scale = scales2[id];
      } else {
        const scaleClass = registry.getScale(scaleType);
        scale = new scaleClass({
          id,
          type: scaleType,
          ctx: this.ctx,
          chart: this
        });
        scales2[scale.id] = scale;
      }
      scale.init(scaleOptions, options);
    });
    each(updated, (hasUpdated, id) => {
      if (!hasUpdated) {
        delete scales2[id];
      }
    });
    each(scales2, (scale) => {
      layouts.configure(this, scale, scale.options);
      layouts.addBox(this, scale);
    });
  }
  _updateMetasets() {
    const metasets = this._metasets;
    const numData = this.data.datasets.length;
    const numMeta = metasets.length;
    metasets.sort((a, b) => a.index - b.index);
    if (numMeta > numData) {
      for (let i = numData; i < numMeta; ++i) {
        this._destroyDatasetMeta(i);
      }
      metasets.splice(numData, numMeta - numData);
    }
    this._sortedMetasets = metasets.slice(0).sort(compare2Level("order", "index"));
  }
  _removeUnreferencedMetasets() {
    const { _metasets: metasets, data: { datasets } } = this;
    if (metasets.length > datasets.length) {
      delete this._stacks;
    }
    metasets.forEach((meta, index2) => {
      if (datasets.filter((x) => x === meta._dataset).length === 0) {
        this._destroyDatasetMeta(index2);
      }
    });
  }
  buildOrUpdateControllers() {
    const newControllers = [];
    const datasets = this.data.datasets;
    let i, ilen;
    this._removeUnreferencedMetasets();
    for (i = 0, ilen = datasets.length; i < ilen; i++) {
      const dataset = datasets[i];
      let meta = this.getDatasetMeta(i);
      const type = dataset.type || this.config.type;
      if (meta.type && meta.type !== type) {
        this._destroyDatasetMeta(i);
        meta = this.getDatasetMeta(i);
      }
      meta.type = type;
      meta.indexAxis = dataset.indexAxis || getIndexAxis(type, this.options);
      meta.order = dataset.order || 0;
      meta.index = i;
      meta.label = "" + dataset.label;
      meta.visible = this.isDatasetVisible(i);
      if (meta.controller) {
        meta.controller.updateIndex(i);
        meta.controller.linkScales();
      } else {
        const ControllerClass = registry.getController(type);
        const { datasetElementType, dataElementType } = defaults.datasets[type];
        Object.assign(ControllerClass, {
          dataElementType: registry.getElement(dataElementType),
          datasetElementType: datasetElementType && registry.getElement(datasetElementType)
        });
        meta.controller = new ControllerClass(this, i);
        newControllers.push(meta.controller);
      }
    }
    this._updateMetasets();
    return newControllers;
  }
  _resetElements() {
    each(this.data.datasets, (dataset, datasetIndex) => {
      this.getDatasetMeta(datasetIndex).controller.reset();
    }, this);
  }
  reset() {
    this._resetElements();
    this.notifyPlugins("reset");
  }
  update(mode) {
    const config = this.config;
    config.update();
    const options = this._options = config.createResolver(config.chartOptionScopes(), this.getContext());
    const animsDisabled = this._animationsDisabled = !options.animation;
    this._updateScales();
    this._checkEventBindings();
    this._updateHiddenIndices();
    this._plugins.invalidate();
    if (this.notifyPlugins("beforeUpdate", {
      mode,
      cancelable: true
    }) === false) {
      return;
    }
    const newControllers = this.buildOrUpdateControllers();
    this.notifyPlugins("beforeElementsUpdate");
    let minPadding = 0;
    for (let i = 0, ilen = this.data.datasets.length; i < ilen; i++) {
      const { controller } = this.getDatasetMeta(i);
      const reset2 = !animsDisabled && newControllers.indexOf(controller) === -1;
      controller.buildOrUpdateElements(reset2);
      minPadding = Math.max(+controller.getMaxOverflow(), minPadding);
    }
    minPadding = this._minPadding = options.layout.autoPadding ? minPadding : 0;
    this._updateLayout(minPadding);
    if (!animsDisabled) {
      each(newControllers, (controller) => {
        controller.reset();
      });
    }
    this._updateDatasets(mode);
    this.notifyPlugins("afterUpdate", {
      mode
    });
    this._layers.sort(compare2Level("z", "_idx"));
    const { _active, _lastEvent } = this;
    if (_lastEvent) {
      this._eventHandler(_lastEvent, true);
    } else if (_active.length) {
      this._updateHoverStyles(_active, _active, true);
    }
    this.render();
  }
  _updateScales() {
    each(this.scales, (scale) => {
      layouts.removeBox(this, scale);
    });
    this.ensureScalesHaveIDs();
    this.buildOrUpdateScales();
  }
  _checkEventBindings() {
    const options = this.options;
    const existingEvents = new Set(Object.keys(this._listeners));
    const newEvents = new Set(options.events);
    if (!setsEqual(existingEvents, newEvents) || !!this._responsiveListeners !== options.responsive) {
      this.unbindEvents();
      this.bindEvents();
    }
  }
  _updateHiddenIndices() {
    const { _hiddenIndices } = this;
    const changes = this._getUniformDataChanges() || [];
    for (const { method, start, count } of changes) {
      const move = method === "_removeElements" ? -count : count;
      moveNumericKeys(_hiddenIndices, start, move);
    }
  }
  _getUniformDataChanges() {
    const _dataChanges = this._dataChanges;
    if (!_dataChanges || !_dataChanges.length) {
      return;
    }
    this._dataChanges = [];
    const datasetCount = this.data.datasets.length;
    const makeSet = (idx) => new Set(_dataChanges.filter((c) => c[0] === idx).map((c, i) => i + "," + c.splice(1).join(",")));
    const changeSet = makeSet(0);
    for (let i = 1; i < datasetCount; i++) {
      if (!setsEqual(changeSet, makeSet(i))) {
        return;
      }
    }
    return Array.from(changeSet).map((c) => c.split(",")).map((a) => ({
      method: a[1],
      start: +a[2],
      count: +a[3]
    }));
  }
  _updateLayout(minPadding) {
    if (this.notifyPlugins("beforeLayout", {
      cancelable: true
    }) === false) {
      return;
    }
    layouts.update(this, this.width, this.height, minPadding);
    const area = this.chartArea;
    const noArea = area.width <= 0 || area.height <= 0;
    this._layers = [];
    each(this.boxes, (box) => {
      if (noArea && box.position === "chartArea") {
        return;
      }
      if (box.configure) {
        box.configure();
      }
      this._layers.push(...box._layers());
    }, this);
    this._layers.forEach((item, index2) => {
      item._idx = index2;
    });
    this.notifyPlugins("afterLayout");
  }
  _updateDatasets(mode) {
    if (this.notifyPlugins("beforeDatasetsUpdate", {
      mode,
      cancelable: true
    }) === false) {
      return;
    }
    for (let i = 0, ilen = this.data.datasets.length; i < ilen; ++i) {
      this.getDatasetMeta(i).controller.configure();
    }
    for (let i1 = 0, ilen1 = this.data.datasets.length; i1 < ilen1; ++i1) {
      this._updateDataset(i1, isFunction(mode) ? mode({
        datasetIndex: i1
      }) : mode);
    }
    this.notifyPlugins("afterDatasetsUpdate", {
      mode
    });
  }
  _updateDataset(index2, mode) {
    const meta = this.getDatasetMeta(index2);
    const args = {
      meta,
      index: index2,
      mode,
      cancelable: true
    };
    if (this.notifyPlugins("beforeDatasetUpdate", args) === false) {
      return;
    }
    meta.controller._update(mode);
    args.cancelable = false;
    this.notifyPlugins("afterDatasetUpdate", args);
  }
  render() {
    if (this.notifyPlugins("beforeRender", {
      cancelable: true
    }) === false) {
      return;
    }
    if (animator.has(this)) {
      if (this.attached && !animator.running(this)) {
        animator.start(this);
      }
    } else {
      this.draw();
      onAnimationsComplete({
        chart: this
      });
    }
  }
  draw() {
    let i;
    if (this._resizeBeforeDraw) {
      const { width, height } = this._resizeBeforeDraw;
      this._resize(width, height);
      this._resizeBeforeDraw = null;
    }
    this.clear();
    if (this.width <= 0 || this.height <= 0) {
      return;
    }
    if (this.notifyPlugins("beforeDraw", {
      cancelable: true
    }) === false) {
      return;
    }
    const layers = this._layers;
    for (i = 0; i < layers.length && layers[i].z <= 0; ++i) {
      layers[i].draw(this.chartArea);
    }
    this._drawDatasets();
    for (; i < layers.length; ++i) {
      layers[i].draw(this.chartArea);
    }
    this.notifyPlugins("afterDraw");
  }
  _getSortedDatasetMetas(filterVisible) {
    const metasets = this._sortedMetasets;
    const result = [];
    let i, ilen;
    for (i = 0, ilen = metasets.length; i < ilen; ++i) {
      const meta = metasets[i];
      if (!filterVisible || meta.visible) {
        result.push(meta);
      }
    }
    return result;
  }
  getSortedVisibleDatasetMetas() {
    return this._getSortedDatasetMetas(true);
  }
  _drawDatasets() {
    if (this.notifyPlugins("beforeDatasetsDraw", {
      cancelable: true
    }) === false) {
      return;
    }
    const metasets = this.getSortedVisibleDatasetMetas();
    for (let i = metasets.length - 1; i >= 0; --i) {
      this._drawDataset(metasets[i]);
    }
    this.notifyPlugins("afterDatasetsDraw");
  }
  _drawDataset(meta) {
    const ctx = this.ctx;
    const clip = meta._clip;
    const useClip = !clip.disabled;
    const area = getDatasetArea(meta) || this.chartArea;
    const args = {
      meta,
      index: meta.index,
      cancelable: true
    };
    if (this.notifyPlugins("beforeDatasetDraw", args) === false) {
      return;
    }
    if (useClip) {
      clipArea(ctx, {
        left: clip.left === false ? 0 : area.left - clip.left,
        right: clip.right === false ? this.width : area.right + clip.right,
        top: clip.top === false ? 0 : area.top - clip.top,
        bottom: clip.bottom === false ? this.height : area.bottom + clip.bottom
      });
    }
    meta.controller.draw();
    if (useClip) {
      unclipArea(ctx);
    }
    args.cancelable = false;
    this.notifyPlugins("afterDatasetDraw", args);
  }
  isPointInArea(point) {
    return _isPointInArea(point, this.chartArea, this._minPadding);
  }
  getElementsAtEventForMode(e, mode, options, useFinalPosition) {
    const method = Interaction.modes[mode];
    if (typeof method === "function") {
      return method(this, e, options, useFinalPosition);
    }
    return [];
  }
  getDatasetMeta(datasetIndex) {
    const dataset = this.data.datasets[datasetIndex];
    const metasets = this._metasets;
    let meta = metasets.filter((x) => x && x._dataset === dataset).pop();
    if (!meta) {
      meta = {
        type: null,
        data: [],
        dataset: null,
        controller: null,
        hidden: null,
        xAxisID: null,
        yAxisID: null,
        order: dataset && dataset.order || 0,
        index: datasetIndex,
        _dataset: dataset,
        _parsed: [],
        _sorted: false
      };
      metasets.push(meta);
    }
    return meta;
  }
  getContext() {
    return this.$context || (this.$context = createContext(null, {
      chart: this,
      type: "chart"
    }));
  }
  getVisibleDatasetCount() {
    return this.getSortedVisibleDatasetMetas().length;
  }
  isDatasetVisible(datasetIndex) {
    const dataset = this.data.datasets[datasetIndex];
    if (!dataset) {
      return false;
    }
    const meta = this.getDatasetMeta(datasetIndex);
    return typeof meta.hidden === "boolean" ? !meta.hidden : !dataset.hidden;
  }
  setDatasetVisibility(datasetIndex, visible) {
    const meta = this.getDatasetMeta(datasetIndex);
    meta.hidden = !visible;
  }
  toggleDataVisibility(index2) {
    this._hiddenIndices[index2] = !this._hiddenIndices[index2];
  }
  getDataVisibility(index2) {
    return !this._hiddenIndices[index2];
  }
  _updateVisibility(datasetIndex, dataIndex, visible) {
    const mode = visible ? "show" : "hide";
    const meta = this.getDatasetMeta(datasetIndex);
    const anims = meta.controller._resolveAnimations(void 0, mode);
    if (defined(dataIndex)) {
      meta.data[dataIndex].hidden = !visible;
      this.update();
    } else {
      this.setDatasetVisibility(datasetIndex, visible);
      anims.update(meta, {
        visible
      });
      this.update((ctx) => ctx.datasetIndex === datasetIndex ? mode : void 0);
    }
  }
  hide(datasetIndex, dataIndex) {
    this._updateVisibility(datasetIndex, dataIndex, false);
  }
  show(datasetIndex, dataIndex) {
    this._updateVisibility(datasetIndex, dataIndex, true);
  }
  _destroyDatasetMeta(datasetIndex) {
    const meta = this._metasets[datasetIndex];
    if (meta && meta.controller) {
      meta.controller._destroy();
    }
    delete this._metasets[datasetIndex];
  }
  _stop() {
    let i, ilen;
    this.stop();
    animator.remove(this);
    for (i = 0, ilen = this.data.datasets.length; i < ilen; ++i) {
      this._destroyDatasetMeta(i);
    }
  }
  destroy() {
    this.notifyPlugins("beforeDestroy");
    const { canvas, ctx } = this;
    this._stop();
    this.config.clearCache();
    if (canvas) {
      this.unbindEvents();
      clearCanvas(canvas, ctx);
      this.platform.releaseContext(ctx);
      this.canvas = null;
      this.ctx = null;
    }
    delete instances[this.id];
    this.notifyPlugins("afterDestroy");
  }
  toBase64Image(...args) {
    return this.canvas.toDataURL(...args);
  }
  bindEvents() {
    this.bindUserEvents();
    if (this.options.responsive) {
      this.bindResponsiveEvents();
    } else {
      this.attached = true;
    }
  }
  bindUserEvents() {
    const listeners = this._listeners;
    const platform = this.platform;
    const _add = (type, listener2) => {
      platform.addEventListener(this, type, listener2);
      listeners[type] = listener2;
    };
    const listener = (e, x, y) => {
      e.offsetX = x;
      e.offsetY = y;
      this._eventHandler(e);
    };
    each(this.options.events, (type) => _add(type, listener));
  }
  bindResponsiveEvents() {
    if (!this._responsiveListeners) {
      this._responsiveListeners = {};
    }
    const listeners = this._responsiveListeners;
    const platform = this.platform;
    const _add = (type, listener2) => {
      platform.addEventListener(this, type, listener2);
      listeners[type] = listener2;
    };
    const _remove = (type, listener2) => {
      if (listeners[type]) {
        platform.removeEventListener(this, type, listener2);
        delete listeners[type];
      }
    };
    const listener = (width, height) => {
      if (this.canvas) {
        this.resize(width, height);
      }
    };
    let detached;
    const attached = () => {
      _remove("attach", attached);
      this.attached = true;
      this.resize();
      _add("resize", listener);
      _add("detach", detached);
    };
    detached = () => {
      this.attached = false;
      _remove("resize", listener);
      this._stop();
      this._resize(0, 0);
      _add("attach", attached);
    };
    if (platform.isAttached(this.canvas)) {
      attached();
    } else {
      detached();
    }
  }
  unbindEvents() {
    each(this._listeners, (listener, type) => {
      this.platform.removeEventListener(this, type, listener);
    });
    this._listeners = {};
    each(this._responsiveListeners, (listener, type) => {
      this.platform.removeEventListener(this, type, listener);
    });
    this._responsiveListeners = void 0;
  }
  updateHoverStyle(items, mode, enabled) {
    const prefix = enabled ? "set" : "remove";
    let meta, item, i, ilen;
    if (mode === "dataset") {
      meta = this.getDatasetMeta(items[0].datasetIndex);
      meta.controller["_" + prefix + "DatasetHoverStyle"]();
    }
    for (i = 0, ilen = items.length; i < ilen; ++i) {
      item = items[i];
      const controller = item && this.getDatasetMeta(item.datasetIndex).controller;
      if (controller) {
        controller[prefix + "HoverStyle"](item.element, item.datasetIndex, item.index);
      }
    }
  }
  getActiveElements() {
    return this._active || [];
  }
  setActiveElements(activeElements) {
    const lastActive = this._active || [];
    const active = activeElements.map(({ datasetIndex, index: index2 }) => {
      const meta = this.getDatasetMeta(datasetIndex);
      if (!meta) {
        throw new Error("No dataset found at index " + datasetIndex);
      }
      return {
        datasetIndex,
        element: meta.data[index2],
        index: index2
      };
    });
    const changed = !_elementsEqual(active, lastActive);
    if (changed) {
      this._active = active;
      this._lastEvent = null;
      this._updateHoverStyles(active, lastActive);
    }
  }
  notifyPlugins(hook, args, filter) {
    return this._plugins.notify(this, hook, args, filter);
  }
  isPluginEnabled(pluginId) {
    return this._plugins._cache.filter((p) => p.plugin.id === pluginId).length === 1;
  }
  _updateHoverStyles(active, lastActive, replay) {
    const hoverOptions = this.options.hover;
    const diff = (a, b) => a.filter((x) => !b.some((y) => x.datasetIndex === y.datasetIndex && x.index === y.index));
    const deactivated = diff(lastActive, active);
    const activated = replay ? active : diff(active, lastActive);
    if (deactivated.length) {
      this.updateHoverStyle(deactivated, hoverOptions.mode, false);
    }
    if (activated.length && hoverOptions.mode) {
      this.updateHoverStyle(activated, hoverOptions.mode, true);
    }
  }
  _eventHandler(e, replay) {
    const args = {
      event: e,
      replay,
      cancelable: true,
      inChartArea: this.isPointInArea(e)
    };
    const eventFilter = (plugin) => (plugin.options.events || this.options.events).includes(e.native.type);
    if (this.notifyPlugins("beforeEvent", args, eventFilter) === false) {
      return;
    }
    const changed = this._handleEvent(e, replay, args.inChartArea);
    args.cancelable = false;
    this.notifyPlugins("afterEvent", args, eventFilter);
    if (changed || args.changed) {
      this.render();
    }
    return this;
  }
  _handleEvent(e, replay, inChartArea) {
    const { _active: lastActive = [], options } = this;
    const useFinalPosition = replay;
    const active = this._getActiveElements(e, lastActive, inChartArea, useFinalPosition);
    const isClick = _isClickEvent(e);
    const lastEvent = determineLastEvent(e, this._lastEvent, inChartArea, isClick);
    if (inChartArea) {
      this._lastEvent = null;
      callback(options.onHover, [
        e,
        active,
        this
      ], this);
      if (isClick) {
        callback(options.onClick, [
          e,
          active,
          this
        ], this);
      }
    }
    const changed = !_elementsEqual(active, lastActive);
    if (changed || replay) {
      this._active = active;
      this._updateHoverStyles(active, lastActive, replay);
    }
    this._lastEvent = lastEvent;
    return changed;
  }
  _getActiveElements(e, lastActive, inChartArea, useFinalPosition) {
    if (e.type === "mouseout") {
      return [];
    }
    if (!inChartArea) {
      return lastActive;
    }
    const hoverOptions = this.options.hover;
    return this.getElementsAtEventForMode(e, hoverOptions.mode, hoverOptions, useFinalPosition);
  }
}
__publicField(Chart, "defaults", defaults);
__publicField(Chart, "instances", instances);
__publicField(Chart, "overrides", overrides);
__publicField(Chart, "registry", registry);
__publicField(Chart, "version", version);
__publicField(Chart, "getChart", getChart);
function invalidatePlugins() {
  return each(Chart.instances, (chart) => chart._plugins.invalidate());
}
function clipArc(ctx, element, endAngle) {
  const { startAngle, pixelMargin, x, y, outerRadius, innerRadius } = element;
  let angleMargin = pixelMargin / outerRadius;
  ctx.beginPath();
  ctx.arc(x, y, outerRadius, startAngle - angleMargin, endAngle + angleMargin);
  if (innerRadius > pixelMargin) {
    angleMargin = pixelMargin / innerRadius;
    ctx.arc(x, y, innerRadius, endAngle + angleMargin, startAngle - angleMargin, true);
  } else {
    ctx.arc(x, y, pixelMargin, endAngle + HALF_PI, startAngle - HALF_PI);
  }
  ctx.closePath();
  ctx.clip();
}
function toRadiusCorners(value) {
  return _readValueToProps(value, [
    "outerStart",
    "outerEnd",
    "innerStart",
    "innerEnd"
  ]);
}
function parseBorderRadius$1(arc, innerRadius, outerRadius, angleDelta) {
  const o = toRadiusCorners(arc.options.borderRadius);
  const halfThickness = (outerRadius - innerRadius) / 2;
  const innerLimit = Math.min(halfThickness, angleDelta * innerRadius / 2);
  const computeOuterLimit = (val) => {
    const outerArcLimit = (outerRadius - Math.min(halfThickness, val)) * angleDelta / 2;
    return _limitValue(val, 0, Math.min(halfThickness, outerArcLimit));
  };
  return {
    outerStart: computeOuterLimit(o.outerStart),
    outerEnd: computeOuterLimit(o.outerEnd),
    innerStart: _limitValue(o.innerStart, 0, innerLimit),
    innerEnd: _limitValue(o.innerEnd, 0, innerLimit)
  };
}
function rThetaToXY(r, theta, x, y) {
  return {
    x: x + r * Math.cos(theta),
    y: y + r * Math.sin(theta)
  };
}
function pathArc(ctx, element, offset, spacing, end, circular) {
  const { x, y, startAngle: start, pixelMargin, innerRadius: innerR } = element;
  const outerRadius = Math.max(element.outerRadius + spacing + offset - pixelMargin, 0);
  const innerRadius = innerR > 0 ? innerR + spacing + offset + pixelMargin : 0;
  let spacingOffset = 0;
  const alpha2 = end - start;
  if (spacing) {
    const noSpacingInnerRadius = innerR > 0 ? innerR - spacing : 0;
    const noSpacingOuterRadius = outerRadius > 0 ? outerRadius - spacing : 0;
    const avNogSpacingRadius = (noSpacingInnerRadius + noSpacingOuterRadius) / 2;
    const adjustedAngle = avNogSpacingRadius !== 0 ? alpha2 * avNogSpacingRadius / (avNogSpacingRadius + spacing) : alpha2;
    spacingOffset = (alpha2 - adjustedAngle) / 2;
  }
  const beta = Math.max(1e-3, alpha2 * outerRadius - offset / PI) / outerRadius;
  const angleOffset = (alpha2 - beta) / 2;
  const startAngle = start + angleOffset + spacingOffset;
  const endAngle = end - angleOffset - spacingOffset;
  const { outerStart, outerEnd, innerStart, innerEnd } = parseBorderRadius$1(element, innerRadius, outerRadius, endAngle - startAngle);
  const outerStartAdjustedRadius = outerRadius - outerStart;
  const outerEndAdjustedRadius = outerRadius - outerEnd;
  const outerStartAdjustedAngle = startAngle + outerStart / outerStartAdjustedRadius;
  const outerEndAdjustedAngle = endAngle - outerEnd / outerEndAdjustedRadius;
  const innerStartAdjustedRadius = innerRadius + innerStart;
  const innerEndAdjustedRadius = innerRadius + innerEnd;
  const innerStartAdjustedAngle = startAngle + innerStart / innerStartAdjustedRadius;
  const innerEndAdjustedAngle = endAngle - innerEnd / innerEndAdjustedRadius;
  ctx.beginPath();
  if (circular) {
    const outerMidAdjustedAngle = (outerStartAdjustedAngle + outerEndAdjustedAngle) / 2;
    ctx.arc(x, y, outerRadius, outerStartAdjustedAngle, outerMidAdjustedAngle);
    ctx.arc(x, y, outerRadius, outerMidAdjustedAngle, outerEndAdjustedAngle);
    if (outerEnd > 0) {
      const pCenter = rThetaToXY(outerEndAdjustedRadius, outerEndAdjustedAngle, x, y);
      ctx.arc(pCenter.x, pCenter.y, outerEnd, outerEndAdjustedAngle, endAngle + HALF_PI);
    }
    const p4 = rThetaToXY(innerEndAdjustedRadius, endAngle, x, y);
    ctx.lineTo(p4.x, p4.y);
    if (innerEnd > 0) {
      const pCenter1 = rThetaToXY(innerEndAdjustedRadius, innerEndAdjustedAngle, x, y);
      ctx.arc(pCenter1.x, pCenter1.y, innerEnd, endAngle + HALF_PI, innerEndAdjustedAngle + Math.PI);
    }
    const innerMidAdjustedAngle = (endAngle - innerEnd / innerRadius + (startAngle + innerStart / innerRadius)) / 2;
    ctx.arc(x, y, innerRadius, endAngle - innerEnd / innerRadius, innerMidAdjustedAngle, true);
    ctx.arc(x, y, innerRadius, innerMidAdjustedAngle, startAngle + innerStart / innerRadius, true);
    if (innerStart > 0) {
      const pCenter2 = rThetaToXY(innerStartAdjustedRadius, innerStartAdjustedAngle, x, y);
      ctx.arc(pCenter2.x, pCenter2.y, innerStart, innerStartAdjustedAngle + Math.PI, startAngle - HALF_PI);
    }
    const p8 = rThetaToXY(outerStartAdjustedRadius, startAngle, x, y);
    ctx.lineTo(p8.x, p8.y);
    if (outerStart > 0) {
      const pCenter3 = rThetaToXY(outerStartAdjustedRadius, outerStartAdjustedAngle, x, y);
      ctx.arc(pCenter3.x, pCenter3.y, outerStart, startAngle - HALF_PI, outerStartAdjustedAngle);
    }
  } else {
    ctx.moveTo(x, y);
    const outerStartX = Math.cos(outerStartAdjustedAngle) * outerRadius + x;
    const outerStartY = Math.sin(outerStartAdjustedAngle) * outerRadius + y;
    ctx.lineTo(outerStartX, outerStartY);
    const outerEndX = Math.cos(outerEndAdjustedAngle) * outerRadius + x;
    const outerEndY = Math.sin(outerEndAdjustedAngle) * outerRadius + y;
    ctx.lineTo(outerEndX, outerEndY);
  }
  ctx.closePath();
}
function drawArc(ctx, element, offset, spacing, circular) {
  const { fullCircles, startAngle, circumference } = element;
  let endAngle = element.endAngle;
  if (fullCircles) {
    pathArc(ctx, element, offset, spacing, endAngle, circular);
    for (let i = 0; i < fullCircles; ++i) {
      ctx.fill();
    }
    if (!isNaN(circumference)) {
      endAngle = startAngle + (circumference % TAU || TAU);
    }
  }
  pathArc(ctx, element, offset, spacing, endAngle, circular);
  ctx.fill();
  return endAngle;
}
function drawBorder(ctx, element, offset, spacing, circular) {
  const { fullCircles, startAngle, circumference, options } = element;
  const { borderWidth, borderJoinStyle } = options;
  const inner = options.borderAlign === "inner";
  if (!borderWidth) {
    return;
  }
  if (inner) {
    ctx.lineWidth = borderWidth * 2;
    ctx.lineJoin = borderJoinStyle || "round";
  } else {
    ctx.lineWidth = borderWidth;
    ctx.lineJoin = borderJoinStyle || "bevel";
  }
  let endAngle = element.endAngle;
  if (fullCircles) {
    pathArc(ctx, element, offset, spacing, endAngle, circular);
    for (let i = 0; i < fullCircles; ++i) {
      ctx.stroke();
    }
    if (!isNaN(circumference)) {
      endAngle = startAngle + (circumference % TAU || TAU);
    }
  }
  if (inner) {
    clipArc(ctx, element, endAngle);
  }
  if (!fullCircles) {
    pathArc(ctx, element, offset, spacing, endAngle, circular);
    ctx.stroke();
  }
}
class ArcElement extends Element {
  constructor(cfg) {
    super();
    this.options = void 0;
    this.circumference = void 0;
    this.startAngle = void 0;
    this.endAngle = void 0;
    this.innerRadius = void 0;
    this.outerRadius = void 0;
    this.pixelMargin = 0;
    this.fullCircles = 0;
    if (cfg) {
      Object.assign(this, cfg);
    }
  }
  inRange(chartX, chartY, useFinalPosition) {
    const point = this.getProps([
      "x",
      "y"
    ], useFinalPosition);
    const { angle, distance } = getAngleFromPoint(point, {
      x: chartX,
      y: chartY
    });
    const { startAngle, endAngle, innerRadius, outerRadius, circumference } = this.getProps([
      "startAngle",
      "endAngle",
      "innerRadius",
      "outerRadius",
      "circumference"
    ], useFinalPosition);
    const rAdjust = this.options.spacing / 2;
    const _circumference = valueOrDefault(circumference, endAngle - startAngle);
    const betweenAngles = _circumference >= TAU || _angleBetween(angle, startAngle, endAngle);
    const withinRadius = _isBetween(distance, innerRadius + rAdjust, outerRadius + rAdjust);
    return betweenAngles && withinRadius;
  }
  getCenterPoint(useFinalPosition) {
    const { x, y, startAngle, endAngle, innerRadius, outerRadius } = this.getProps([
      "x",
      "y",
      "startAngle",
      "endAngle",
      "innerRadius",
      "outerRadius"
    ], useFinalPosition);
    const { offset, spacing } = this.options;
    const halfAngle = (startAngle + endAngle) / 2;
    const halfRadius = (innerRadius + outerRadius + spacing + offset) / 2;
    return {
      x: x + Math.cos(halfAngle) * halfRadius,
      y: y + Math.sin(halfAngle) * halfRadius
    };
  }
  tooltipPosition(useFinalPosition) {
    return this.getCenterPoint(useFinalPosition);
  }
  draw(ctx) {
    const { options, circumference } = this;
    const offset = (options.offset || 0) / 4;
    const spacing = (options.spacing || 0) / 2;
    const circular = options.circular;
    this.pixelMargin = options.borderAlign === "inner" ? 0.33 : 0;
    this.fullCircles = circumference > TAU ? Math.floor(circumference / TAU) : 0;
    if (circumference === 0 || this.innerRadius < 0 || this.outerRadius < 0) {
      return;
    }
    ctx.save();
    const halfAngle = (this.startAngle + this.endAngle) / 2;
    ctx.translate(Math.cos(halfAngle) * offset, Math.sin(halfAngle) * offset);
    const fix = 1 - Math.sin(Math.min(PI, circumference || 0));
    const radiusOffset = offset * fix;
    ctx.fillStyle = options.backgroundColor;
    ctx.strokeStyle = options.borderColor;
    drawArc(ctx, this, radiusOffset, spacing, circular);
    drawBorder(ctx, this, radiusOffset, spacing, circular);
    ctx.restore();
  }
}
__publicField(ArcElement, "id", "arc");
__publicField(ArcElement, "defaults", {
  borderAlign: "center",
  borderColor: "#fff",
  borderJoinStyle: void 0,
  borderRadius: 0,
  borderWidth: 2,
  offset: 0,
  spacing: 0,
  angle: void 0,
  circular: true
});
__publicField(ArcElement, "defaultRoutes", {
  backgroundColor: "backgroundColor"
});
function setStyle(ctx, options, style = options) {
  ctx.lineCap = valueOrDefault(style.borderCapStyle, options.borderCapStyle);
  ctx.setLineDash(valueOrDefault(style.borderDash, options.borderDash));
  ctx.lineDashOffset = valueOrDefault(style.borderDashOffset, options.borderDashOffset);
  ctx.lineJoin = valueOrDefault(style.borderJoinStyle, options.borderJoinStyle);
  ctx.lineWidth = valueOrDefault(style.borderWidth, options.borderWidth);
  ctx.strokeStyle = valueOrDefault(style.borderColor, options.borderColor);
}
function lineTo(ctx, previous, target) {
  ctx.lineTo(target.x, target.y);
}
function getLineMethod(options) {
  if (options.stepped) {
    return _steppedLineTo;
  }
  if (options.tension || options.cubicInterpolationMode === "monotone") {
    return _bezierCurveTo;
  }
  return lineTo;
}
function pathVars(points, segment, params = {}) {
  const count = points.length;
  const { start: paramsStart = 0, end: paramsEnd = count - 1 } = params;
  const { start: segmentStart, end: segmentEnd } = segment;
  const start = Math.max(paramsStart, segmentStart);
  const end = Math.min(paramsEnd, segmentEnd);
  const outside = paramsStart < segmentStart && paramsEnd < segmentStart || paramsStart > segmentEnd && paramsEnd > segmentEnd;
  return {
    count,
    start,
    loop: segment.loop,
    ilen: end < start && !outside ? count + end - start : end - start
  };
}
function pathSegment(ctx, line, segment, params) {
  const { points, options } = line;
  const { count, start, loop, ilen } = pathVars(points, segment, params);
  const lineMethod = getLineMethod(options);
  let { move = true, reverse } = params || {};
  let i, point, prev;
  for (i = 0; i <= ilen; ++i) {
    point = points[(start + (reverse ? ilen - i : i)) % count];
    if (point.skip) {
      continue;
    } else if (move) {
      ctx.moveTo(point.x, point.y);
      move = false;
    } else {
      lineMethod(ctx, prev, point, reverse, options.stepped);
    }
    prev = point;
  }
  if (loop) {
    point = points[(start + (reverse ? ilen : 0)) % count];
    lineMethod(ctx, prev, point, reverse, options.stepped);
  }
  return !!loop;
}
function fastPathSegment(ctx, line, segment, params) {
  const points = line.points;
  const { count, start, ilen } = pathVars(points, segment, params);
  const { move = true, reverse } = params || {};
  let avgX = 0;
  let countX = 0;
  let i, point, prevX, minY, maxY, lastY;
  const pointIndex = (index2) => (start + (reverse ? ilen - index2 : index2)) % count;
  const drawX = () => {
    if (minY !== maxY) {
      ctx.lineTo(avgX, maxY);
      ctx.lineTo(avgX, minY);
      ctx.lineTo(avgX, lastY);
    }
  };
  if (move) {
    point = points[pointIndex(0)];
    ctx.moveTo(point.x, point.y);
  }
  for (i = 0; i <= ilen; ++i) {
    point = points[pointIndex(i)];
    if (point.skip) {
      continue;
    }
    const x = point.x;
    const y = point.y;
    const truncX = x | 0;
    if (truncX === prevX) {
      if (y < minY) {
        minY = y;
      } else if (y > maxY) {
        maxY = y;
      }
      avgX = (countX * avgX + x) / ++countX;
    } else {
      drawX();
      ctx.lineTo(x, y);
      prevX = truncX;
      countX = 0;
      minY = maxY = y;
    }
    lastY = y;
  }
  drawX();
}
function _getSegmentMethod(line) {
  const opts = line.options;
  const borderDash = opts.borderDash && opts.borderDash.length;
  const useFastPath = !line._decimated && !line._loop && !opts.tension && opts.cubicInterpolationMode !== "monotone" && !opts.stepped && !borderDash;
  return useFastPath ? fastPathSegment : pathSegment;
}
function _getInterpolationMethod(options) {
  if (options.stepped) {
    return _steppedInterpolation;
  }
  if (options.tension || options.cubicInterpolationMode === "monotone") {
    return _bezierInterpolation;
  }
  return _pointInLine;
}
function strokePathWithCache(ctx, line, start, count) {
  let path = line._path;
  if (!path) {
    path = line._path = new Path2D();
    if (line.path(path, start, count)) {
      path.closePath();
    }
  }
  setStyle(ctx, line.options);
  ctx.stroke(path);
}
function strokePathDirect(ctx, line, start, count) {
  const { segments, options } = line;
  const segmentMethod = _getSegmentMethod(line);
  for (const segment of segments) {
    setStyle(ctx, options, segment.style);
    ctx.beginPath();
    if (segmentMethod(ctx, line, segment, {
      start,
      end: start + count - 1
    })) {
      ctx.closePath();
    }
    ctx.stroke();
  }
}
const usePath2D = typeof Path2D === "function";
function draw(ctx, line, start, count) {
  if (usePath2D && !line.options.segment) {
    strokePathWithCache(ctx, line, start, count);
  } else {
    strokePathDirect(ctx, line, start, count);
  }
}
class LineElement extends Element {
  constructor(cfg) {
    super();
    this.animated = true;
    this.options = void 0;
    this._chart = void 0;
    this._loop = void 0;
    this._fullLoop = void 0;
    this._path = void 0;
    this._points = void 0;
    this._segments = void 0;
    this._decimated = false;
    this._pointsUpdated = false;
    this._datasetIndex = void 0;
    if (cfg) {
      Object.assign(this, cfg);
    }
  }
  updateControlPoints(chartArea, indexAxis) {
    const options = this.options;
    if ((options.tension || options.cubicInterpolationMode === "monotone") && !options.stepped && !this._pointsUpdated) {
      const loop = options.spanGaps ? this._loop : this._fullLoop;
      _updateBezierControlPoints(this._points, options, chartArea, loop, indexAxis);
      this._pointsUpdated = true;
    }
  }
  set points(points) {
    this._points = points;
    delete this._segments;
    delete this._path;
    this._pointsUpdated = false;
  }
  get points() {
    return this._points;
  }
  get segments() {
    return this._segments || (this._segments = _computeSegments(this, this.options.segment));
  }
  first() {
    const segments = this.segments;
    const points = this.points;
    return segments.length && points[segments[0].start];
  }
  last() {
    const segments = this.segments;
    const points = this.points;
    const count = segments.length;
    return count && points[segments[count - 1].end];
  }
  interpolate(point, property) {
    const options = this.options;
    const value = point[property];
    const points = this.points;
    const segments = _boundSegments(this, {
      property,
      start: value,
      end: value
    });
    if (!segments.length) {
      return;
    }
    const result = [];
    const _interpolate = _getInterpolationMethod(options);
    let i, ilen;
    for (i = 0, ilen = segments.length; i < ilen; ++i) {
      const { start, end } = segments[i];
      const p1 = points[start];
      const p2 = points[end];
      if (p1 === p2) {
        result.push(p1);
        continue;
      }
      const t = Math.abs((value - p1[property]) / (p2[property] - p1[property]));
      const interpolated = _interpolate(p1, p2, t, options.stepped);
      interpolated[property] = point[property];
      result.push(interpolated);
    }
    return result.length === 1 ? result[0] : result;
  }
  pathSegment(ctx, segment, params) {
    const segmentMethod = _getSegmentMethod(this);
    return segmentMethod(ctx, this, segment, params);
  }
  path(ctx, start, count) {
    const segments = this.segments;
    const segmentMethod = _getSegmentMethod(this);
    let loop = this._loop;
    start = start || 0;
    count = count || this.points.length - start;
    for (const segment of segments) {
      loop &= segmentMethod(ctx, this, segment, {
        start,
        end: start + count - 1
      });
    }
    return !!loop;
  }
  draw(ctx, chartArea, start, count) {
    const options = this.options || {};
    const points = this.points || [];
    if (points.length && options.borderWidth) {
      ctx.save();
      draw(ctx, this, start, count);
      ctx.restore();
    }
    if (this.animated) {
      this._pointsUpdated = false;
      this._path = void 0;
    }
  }
}
__publicField(LineElement, "id", "line");
__publicField(LineElement, "defaults", {
  borderCapStyle: "butt",
  borderDash: [],
  borderDashOffset: 0,
  borderJoinStyle: "miter",
  borderWidth: 3,
  capBezierPoints: true,
  cubicInterpolationMode: "default",
  fill: false,
  spanGaps: false,
  stepped: false,
  tension: 0
});
__publicField(LineElement, "defaultRoutes", {
  backgroundColor: "backgroundColor",
  borderColor: "borderColor"
});
__publicField(LineElement, "descriptors", {
  _scriptable: true,
  _indexable: (name2) => name2 !== "borderDash" && name2 !== "fill"
});
function inRange$1(el, pos, axis, useFinalPosition) {
  const options = el.options;
  const { [axis]: value } = el.getProps([
    axis
  ], useFinalPosition);
  return Math.abs(pos - value) < options.radius + options.hitRadius;
}
class PointElement extends Element {
  constructor(cfg) {
    super();
    this.options = void 0;
    this.parsed = void 0;
    this.skip = void 0;
    this.stop = void 0;
    if (cfg) {
      Object.assign(this, cfg);
    }
  }
  inRange(mouseX, mouseY, useFinalPosition) {
    const options = this.options;
    const { x, y } = this.getProps([
      "x",
      "y"
    ], useFinalPosition);
    return Math.pow(mouseX - x, 2) + Math.pow(mouseY - y, 2) < Math.pow(options.hitRadius + options.radius, 2);
  }
  inXRange(mouseX, useFinalPosition) {
    return inRange$1(this, mouseX, "x", useFinalPosition);
  }
  inYRange(mouseY, useFinalPosition) {
    return inRange$1(this, mouseY, "y", useFinalPosition);
  }
  getCenterPoint(useFinalPosition) {
    const { x, y } = this.getProps([
      "x",
      "y"
    ], useFinalPosition);
    return {
      x,
      y
    };
  }
  size(options) {
    options = options || this.options || {};
    let radius = options.radius || 0;
    radius = Math.max(radius, radius && options.hoverRadius || 0);
    const borderWidth = radius && options.borderWidth || 0;
    return (radius + borderWidth) * 2;
  }
  draw(ctx, area) {
    const options = this.options;
    if (this.skip || options.radius < 0.1 || !_isPointInArea(this, area, this.size(options) / 2)) {
      return;
    }
    ctx.strokeStyle = options.borderColor;
    ctx.lineWidth = options.borderWidth;
    ctx.fillStyle = options.backgroundColor;
    drawPoint(ctx, options, this.x, this.y);
  }
  getRange() {
    const options = this.options || {};
    return options.radius + options.hitRadius;
  }
}
__publicField(PointElement, "id", "point");
/**
* @type {any}
*/
__publicField(PointElement, "defaults", {
  borderWidth: 1,
  hitRadius: 1,
  hoverBorderWidth: 1,
  hoverRadius: 4,
  pointStyle: "circle",
  radius: 3,
  rotation: 0
});
/**
* @type {any}
*/
__publicField(PointElement, "defaultRoutes", {
  backgroundColor: "backgroundColor",
  borderColor: "borderColor"
});
function getBarBounds(bar, useFinalPosition) {
  const { x, y, base, width, height } = bar.getProps([
    "x",
    "y",
    "base",
    "width",
    "height"
  ], useFinalPosition);
  let left, right, top, bottom, half;
  if (bar.horizontal) {
    half = height / 2;
    left = Math.min(x, base);
    right = Math.max(x, base);
    top = y - half;
    bottom = y + half;
  } else {
    half = width / 2;
    left = x - half;
    right = x + half;
    top = Math.min(y, base);
    bottom = Math.max(y, base);
  }
  return {
    left,
    top,
    right,
    bottom
  };
}
function skipOrLimit(skip2, value, min, max) {
  return skip2 ? 0 : _limitValue(value, min, max);
}
function parseBorderWidth(bar, maxW, maxH) {
  const value = bar.options.borderWidth;
  const skip2 = bar.borderSkipped;
  const o = toTRBL(value);
  return {
    t: skipOrLimit(skip2.top, o.top, 0, maxH),
    r: skipOrLimit(skip2.right, o.right, 0, maxW),
    b: skipOrLimit(skip2.bottom, o.bottom, 0, maxH),
    l: skipOrLimit(skip2.left, o.left, 0, maxW)
  };
}
function parseBorderRadius(bar, maxW, maxH) {
  const { enableBorderRadius } = bar.getProps([
    "enableBorderRadius"
  ]);
  const value = bar.options.borderRadius;
  const o = toTRBLCorners(value);
  const maxR = Math.min(maxW, maxH);
  const skip2 = bar.borderSkipped;
  const enableBorder = enableBorderRadius || isObject(value);
  return {
    topLeft: skipOrLimit(!enableBorder || skip2.top || skip2.left, o.topLeft, 0, maxR),
    topRight: skipOrLimit(!enableBorder || skip2.top || skip2.right, o.topRight, 0, maxR),
    bottomLeft: skipOrLimit(!enableBorder || skip2.bottom || skip2.left, o.bottomLeft, 0, maxR),
    bottomRight: skipOrLimit(!enableBorder || skip2.bottom || skip2.right, o.bottomRight, 0, maxR)
  };
}
function boundingRects(bar) {
  const bounds = getBarBounds(bar);
  const width = bounds.right - bounds.left;
  const height = bounds.bottom - bounds.top;
  const border = parseBorderWidth(bar, width / 2, height / 2);
  const radius = parseBorderRadius(bar, width / 2, height / 2);
  return {
    outer: {
      x: bounds.left,
      y: bounds.top,
      w: width,
      h: height,
      radius
    },
    inner: {
      x: bounds.left + border.l,
      y: bounds.top + border.t,
      w: width - border.l - border.r,
      h: height - border.t - border.b,
      radius: {
        topLeft: Math.max(0, radius.topLeft - Math.max(border.t, border.l)),
        topRight: Math.max(0, radius.topRight - Math.max(border.t, border.r)),
        bottomLeft: Math.max(0, radius.bottomLeft - Math.max(border.b, border.l)),
        bottomRight: Math.max(0, radius.bottomRight - Math.max(border.b, border.r))
      }
    }
  };
}
function inRange(bar, x, y, useFinalPosition) {
  const skipX = x === null;
  const skipY = y === null;
  const skipBoth = skipX && skipY;
  const bounds = bar && !skipBoth && getBarBounds(bar, useFinalPosition);
  return bounds && (skipX || _isBetween(x, bounds.left, bounds.right)) && (skipY || _isBetween(y, bounds.top, bounds.bottom));
}
function hasRadius(radius) {
  return radius.topLeft || radius.topRight || radius.bottomLeft || radius.bottomRight;
}
function addNormalRectPath(ctx, rect) {
  ctx.rect(rect.x, rect.y, rect.w, rect.h);
}
function inflateRect(rect, amount, refRect = {}) {
  const x = rect.x !== refRect.x ? -amount : 0;
  const y = rect.y !== refRect.y ? -amount : 0;
  const w = (rect.x + rect.w !== refRect.x + refRect.w ? amount : 0) - x;
  const h = (rect.y + rect.h !== refRect.y + refRect.h ? amount : 0) - y;
  return {
    x: rect.x + x,
    y: rect.y + y,
    w: rect.w + w,
    h: rect.h + h,
    radius: rect.radius
  };
}
class BarElement extends Element {
  constructor(cfg) {
    super();
    this.options = void 0;
    this.horizontal = void 0;
    this.base = void 0;
    this.width = void 0;
    this.height = void 0;
    this.inflateAmount = void 0;
    if (cfg) {
      Object.assign(this, cfg);
    }
  }
  draw(ctx) {
    const { inflateAmount, options: { borderColor, backgroundColor } } = this;
    const { inner, outer } = boundingRects(this);
    const addRectPath = hasRadius(outer.radius) ? addRoundedRectPath : addNormalRectPath;
    ctx.save();
    if (outer.w !== inner.w || outer.h !== inner.h) {
      ctx.beginPath();
      addRectPath(ctx, inflateRect(outer, inflateAmount, inner));
      ctx.clip();
      addRectPath(ctx, inflateRect(inner, -inflateAmount, outer));
      ctx.fillStyle = borderColor;
      ctx.fill("evenodd");
    }
    ctx.beginPath();
    addRectPath(ctx, inflateRect(inner, inflateAmount));
    ctx.fillStyle = backgroundColor;
    ctx.fill();
    ctx.restore();
  }
  inRange(mouseX, mouseY, useFinalPosition) {
    return inRange(this, mouseX, mouseY, useFinalPosition);
  }
  inXRange(mouseX, useFinalPosition) {
    return inRange(this, mouseX, null, useFinalPosition);
  }
  inYRange(mouseY, useFinalPosition) {
    return inRange(this, null, mouseY, useFinalPosition);
  }
  getCenterPoint(useFinalPosition) {
    const { x, y, base, horizontal } = this.getProps([
      "x",
      "y",
      "base",
      "horizontal"
    ], useFinalPosition);
    return {
      x: horizontal ? (x + base) / 2 : x,
      y: horizontal ? y : (y + base) / 2
    };
  }
  getRange(axis) {
    return axis === "x" ? this.width / 2 : this.height / 2;
  }
}
__publicField(BarElement, "id", "bar");
__publicField(BarElement, "defaults", {
  borderSkipped: "start",
  borderWidth: 0,
  borderRadius: 0,
  inflateAmount: "auto",
  pointStyle: void 0
});
__publicField(BarElement, "defaultRoutes", {
  backgroundColor: "backgroundColor",
  borderColor: "borderColor"
});
var elements = /* @__PURE__ */ Object.freeze({
  __proto__: null,
  ArcElement,
  LineElement,
  PointElement,
  BarElement
});
const BORDER_COLORS = [
  "rgb(54, 162, 235)",
  "rgb(255, 99, 132)",
  "rgb(255, 159, 64)",
  "rgb(255, 205, 86)",
  "rgb(75, 192, 192)",
  "rgb(153, 102, 255)",
  "rgb(201, 203, 207)"
  // grey
];
const BACKGROUND_COLORS = /* @__PURE__ */ BORDER_COLORS.map((color2) => color2.replace("rgb(", "rgba(").replace(")", ", 0.5)"));
function getBorderColor(i) {
  return BORDER_COLORS[i % BORDER_COLORS.length];
}
function getBackgroundColor(i) {
  return BACKGROUND_COLORS[i % BACKGROUND_COLORS.length];
}
function colorizeDefaultDataset(dataset, i) {
  dataset.borderColor = getBorderColor(i);
  dataset.backgroundColor = getBackgroundColor(i);
  return ++i;
}
function colorizeDoughnutDataset(dataset, i) {
  dataset.backgroundColor = dataset.data.map(() => getBorderColor(i++));
  return i;
}
function colorizePolarAreaDataset(dataset, i) {
  dataset.backgroundColor = dataset.data.map(() => getBackgroundColor(i++));
  return i;
}
function getColorizer(chart) {
  let i = 0;
  return (dataset, datasetIndex) => {
    const controller = chart.getDatasetMeta(datasetIndex).controller;
    if (controller instanceof DoughnutController) {
      i = colorizeDoughnutDataset(dataset, i);
    } else if (controller instanceof PolarAreaController) {
      i = colorizePolarAreaDataset(dataset, i);
    } else if (controller) {
      i = colorizeDefaultDataset(dataset, i);
    }
  };
}
function containsColorsDefinitions(descriptors2) {
  let k;
  for (k in descriptors2) {
    if (descriptors2[k].borderColor || descriptors2[k].backgroundColor) {
      return true;
    }
  }
  return false;
}
function containsColorsDefinition(descriptor) {
  return descriptor && (descriptor.borderColor || descriptor.backgroundColor);
}
var plugin_colors = {
  id: "colors",
  defaults: {
    enabled: true,
    forceOverride: false
  },
  beforeLayout(chart, _args, options) {
    if (!options.enabled) {
      return;
    }
    const { data: { datasets }, options: chartOptions } = chart.config;
    const { elements: elements2 } = chartOptions;
    if (!options.forceOverride && (containsColorsDefinitions(datasets) || containsColorsDefinition(chartOptions) || elements2 && containsColorsDefinitions(elements2))) {
      return;
    }
    const colorizer = getColorizer(chart);
    datasets.forEach(colorizer);
  }
};
function lttbDecimation(data, start, count, availableWidth, options) {
  const samples = options.samples || availableWidth;
  if (samples >= count) {
    return data.slice(start, start + count);
  }
  const decimated = [];
  const bucketWidth = (count - 2) / (samples - 2);
  let sampledIndex = 0;
  const endIndex = start + count - 1;
  let a = start;
  let i, maxAreaPoint, maxArea, area, nextA;
  decimated[sampledIndex++] = data[a];
  for (i = 0; i < samples - 2; i++) {
    let avgX = 0;
    let avgY = 0;
    let j;
    const avgRangeStart = Math.floor((i + 1) * bucketWidth) + 1 + start;
    const avgRangeEnd = Math.min(Math.floor((i + 2) * bucketWidth) + 1, count) + start;
    const avgRangeLength = avgRangeEnd - avgRangeStart;
    for (j = avgRangeStart; j < avgRangeEnd; j++) {
      avgX += data[j].x;
      avgY += data[j].y;
    }
    avgX /= avgRangeLength;
    avgY /= avgRangeLength;
    const rangeOffs = Math.floor(i * bucketWidth) + 1 + start;
    const rangeTo = Math.min(Math.floor((i + 1) * bucketWidth) + 1, count) + start;
    const { x: pointAx, y: pointAy } = data[a];
    maxArea = area = -1;
    for (j = rangeOffs; j < rangeTo; j++) {
      area = 0.5 * Math.abs((pointAx - avgX) * (data[j].y - pointAy) - (pointAx - data[j].x) * (avgY - pointAy));
      if (area > maxArea) {
        maxArea = area;
        maxAreaPoint = data[j];
        nextA = j;
      }
    }
    decimated[sampledIndex++] = maxAreaPoint;
    a = nextA;
  }
  decimated[sampledIndex++] = data[endIndex];
  return decimated;
}
function minMaxDecimation(data, start, count, availableWidth) {
  let avgX = 0;
  let countX = 0;
  let i, point, x, y, prevX, minIndex, maxIndex, startIndex, minY, maxY;
  const decimated = [];
  const endIndex = start + count - 1;
  const xMin = data[start].x;
  const xMax = data[endIndex].x;
  const dx = xMax - xMin;
  for (i = start; i < start + count; ++i) {
    point = data[i];
    x = (point.x - xMin) / dx * availableWidth;
    y = point.y;
    const truncX = x | 0;
    if (truncX === prevX) {
      if (y < minY) {
        minY = y;
        minIndex = i;
      } else if (y > maxY) {
        maxY = y;
        maxIndex = i;
      }
      avgX = (countX * avgX + point.x) / ++countX;
    } else {
      const lastIndex = i - 1;
      if (!isNullOrUndef(minIndex) && !isNullOrUndef(maxIndex)) {
        const intermediateIndex1 = Math.min(minIndex, maxIndex);
        const intermediateIndex2 = Math.max(minIndex, maxIndex);
        if (intermediateIndex1 !== startIndex && intermediateIndex1 !== lastIndex) {
          decimated.push({
            ...data[intermediateIndex1],
            x: avgX
          });
        }
        if (intermediateIndex2 !== startIndex && intermediateIndex2 !== lastIndex) {
          decimated.push({
            ...data[intermediateIndex2],
            x: avgX
          });
        }
      }
      if (i > 0 && lastIndex !== startIndex) {
        decimated.push(data[lastIndex]);
      }
      decimated.push(point);
      prevX = truncX;
      countX = 0;
      minY = maxY = y;
      minIndex = maxIndex = startIndex = i;
    }
  }
  return decimated;
}
function cleanDecimatedDataset(dataset) {
  if (dataset._decimated) {
    const data = dataset._data;
    delete dataset._decimated;
    delete dataset._data;
    Object.defineProperty(dataset, "data", {
      configurable: true,
      enumerable: true,
      writable: true,
      value: data
    });
  }
}
function cleanDecimatedData(chart) {
  chart.data.datasets.forEach((dataset) => {
    cleanDecimatedDataset(dataset);
  });
}
function getStartAndCountOfVisiblePointsSimplified(meta, points) {
  const pointCount = points.length;
  let start = 0;
  let count;
  const { iScale } = meta;
  const { min, max, minDefined, maxDefined } = iScale.getUserBounds();
  if (minDefined) {
    start = _limitValue(_lookupByKey(points, iScale.axis, min).lo, 0, pointCount - 1);
  }
  if (maxDefined) {
    count = _limitValue(_lookupByKey(points, iScale.axis, max).hi + 1, start, pointCount) - start;
  } else {
    count = pointCount - start;
  }
  return {
    start,
    count
  };
}
var plugin_decimation = {
  id: "decimation",
  defaults: {
    algorithm: "min-max",
    enabled: false
  },
  beforeElementsUpdate: (chart, args, options) => {
    if (!options.enabled) {
      cleanDecimatedData(chart);
      return;
    }
    const availableWidth = chart.width;
    chart.data.datasets.forEach((dataset, datasetIndex) => {
      const { _data, indexAxis } = dataset;
      const meta = chart.getDatasetMeta(datasetIndex);
      const data = _data || dataset.data;
      if (resolve([
        indexAxis,
        chart.options.indexAxis
      ]) === "y") {
        return;
      }
      if (!meta.controller.supportsDecimation) {
        return;
      }
      const xAxis = chart.scales[meta.xAxisID];
      if (xAxis.type !== "linear" && xAxis.type !== "time") {
        return;
      }
      if (chart.options.parsing) {
        return;
      }
      let { start, count } = getStartAndCountOfVisiblePointsSimplified(meta, data);
      const threshold = options.threshold || 4 * availableWidth;
      if (count <= threshold) {
        cleanDecimatedDataset(dataset);
        return;
      }
      if (isNullOrUndef(_data)) {
        dataset._data = data;
        delete dataset.data;
        Object.defineProperty(dataset, "data", {
          configurable: true,
          enumerable: true,
          get: function() {
            return this._decimated;
          },
          set: function(d) {
            this._data = d;
          }
        });
      }
      let decimated;
      switch (options.algorithm) {
        case "lttb":
          decimated = lttbDecimation(data, start, count, availableWidth, options);
          break;
        case "min-max":
          decimated = minMaxDecimation(data, start, count, availableWidth);
          break;
        default:
          throw new Error(`Unsupported decimation algorithm '${options.algorithm}'`);
      }
      dataset._decimated = decimated;
    });
  },
  destroy(chart) {
    cleanDecimatedData(chart);
  }
};
function _segments(line, target, property) {
  const segments = line.segments;
  const points = line.points;
  const tpoints = target.points;
  const parts = [];
  for (const segment of segments) {
    let { start, end } = segment;
    end = _findSegmentEnd(start, end, points);
    const bounds = _getBounds(property, points[start], points[end], segment.loop);
    if (!target.segments) {
      parts.push({
        source: segment,
        target: bounds,
        start: points[start],
        end: points[end]
      });
      continue;
    }
    const targetSegments = _boundSegments(target, bounds);
    for (const tgt of targetSegments) {
      const subBounds = _getBounds(property, tpoints[tgt.start], tpoints[tgt.end], tgt.loop);
      const fillSources = _boundSegment(segment, points, subBounds);
      for (const fillSource of fillSources) {
        parts.push({
          source: fillSource,
          target: tgt,
          start: {
            [property]: _getEdge(bounds, subBounds, "start", Math.max)
          },
          end: {
            [property]: _getEdge(bounds, subBounds, "end", Math.min)
          }
        });
      }
    }
  }
  return parts;
}
function _getBounds(property, first, last, loop) {
  if (loop) {
    return;
  }
  let start = first[property];
  let end = last[property];
  if (property === "angle") {
    start = _normalizeAngle(start);
    end = _normalizeAngle(end);
  }
  return {
    property,
    start,
    end
  };
}
function _pointsFromSegments(boundary, line) {
  const { x = null, y = null } = boundary || {};
  const linePoints = line.points;
  const points = [];
  line.segments.forEach(({ start, end }) => {
    end = _findSegmentEnd(start, end, linePoints);
    const first = linePoints[start];
    const last = linePoints[end];
    if (y !== null) {
      points.push({
        x: first.x,
        y
      });
      points.push({
        x: last.x,
        y
      });
    } else if (x !== null) {
      points.push({
        x,
        y: first.y
      });
      points.push({
        x,
        y: last.y
      });
    }
  });
  return points;
}
function _findSegmentEnd(start, end, points) {
  for (; end > start; end--) {
    const point = points[end];
    if (!isNaN(point.x) && !isNaN(point.y)) {
      break;
    }
  }
  return end;
}
function _getEdge(a, b, prop, fn) {
  if (a && b) {
    return fn(a[prop], b[prop]);
  }
  return a ? a[prop] : b ? b[prop] : 0;
}
function _createBoundaryLine(boundary, line) {
  let points = [];
  let _loop = false;
  if (isArray(boundary)) {
    _loop = true;
    points = boundary;
  } else {
    points = _pointsFromSegments(boundary, line);
  }
  return points.length ? new LineElement({
    points,
    options: {
      tension: 0
    },
    _loop,
    _fullLoop: _loop
  }) : null;
}
function _shouldApplyFill(source) {
  return source && source.fill !== false;
}
function _resolveTarget(sources, index2, propagate) {
  const source = sources[index2];
  let fill2 = source.fill;
  const visited = [
    index2
  ];
  let target;
  if (!propagate) {
    return fill2;
  }
  while (fill2 !== false && visited.indexOf(fill2) === -1) {
    if (!isNumberFinite(fill2)) {
      return fill2;
    }
    target = sources[fill2];
    if (!target) {
      return false;
    }
    if (target.visible) {
      return fill2;
    }
    visited.push(fill2);
    fill2 = target.fill;
  }
  return false;
}
function _decodeFill(line, index2, count) {
  const fill2 = parseFillOption(line);
  if (isObject(fill2)) {
    return isNaN(fill2.value) ? false : fill2;
  }
  let target = parseFloat(fill2);
  if (isNumberFinite(target) && Math.floor(target) === target) {
    return decodeTargetIndex(fill2[0], index2, target, count);
  }
  return [
    "origin",
    "start",
    "end",
    "stack",
    "shape"
  ].indexOf(fill2) >= 0 && fill2;
}
function decodeTargetIndex(firstCh, index2, target, count) {
  if (firstCh === "-" || firstCh === "+") {
    target = index2 + target;
  }
  if (target === index2 || target < 0 || target >= count) {
    return false;
  }
  return target;
}
function _getTargetPixel(fill2, scale) {
  let pixel = null;
  if (fill2 === "start") {
    pixel = scale.bottom;
  } else if (fill2 === "end") {
    pixel = scale.top;
  } else if (isObject(fill2)) {
    pixel = scale.getPixelForValue(fill2.value);
  } else if (scale.getBasePixel) {
    pixel = scale.getBasePixel();
  }
  return pixel;
}
function _getTargetValue(fill2, scale, startValue) {
  let value;
  if (fill2 === "start") {
    value = startValue;
  } else if (fill2 === "end") {
    value = scale.options.reverse ? scale.min : scale.max;
  } else if (isObject(fill2)) {
    value = fill2.value;
  } else {
    value = scale.getBaseValue();
  }
  return value;
}
function parseFillOption(line) {
  const options = line.options;
  const fillOption = options.fill;
  let fill2 = valueOrDefault(fillOption && fillOption.target, fillOption);
  if (fill2 === void 0) {
    fill2 = !!options.backgroundColor;
  }
  if (fill2 === false || fill2 === null) {
    return false;
  }
  if (fill2 === true) {
    return "origin";
  }
  return fill2;
}
function _buildStackLine(source) {
  const { scale, index: index2, line } = source;
  const points = [];
  const segments = line.segments;
  const sourcePoints = line.points;
  const linesBelow = getLinesBelow(scale, index2);
  linesBelow.push(_createBoundaryLine({
    x: null,
    y: scale.bottom
  }, line));
  for (let i = 0; i < segments.length; i++) {
    const segment = segments[i];
    for (let j = segment.start; j <= segment.end; j++) {
      addPointsBelow(points, sourcePoints[j], linesBelow);
    }
  }
  return new LineElement({
    points,
    options: {}
  });
}
function getLinesBelow(scale, index2) {
  const below = [];
  const metas = scale.getMatchingVisibleMetas("line");
  for (let i = 0; i < metas.length; i++) {
    const meta = metas[i];
    if (meta.index === index2) {
      break;
    }
    if (!meta.hidden) {
      below.unshift(meta.dataset);
    }
  }
  return below;
}
function addPointsBelow(points, sourcePoint, linesBelow) {
  const postponed = [];
  for (let j = 0; j < linesBelow.length; j++) {
    const line = linesBelow[j];
    const { first, last, point } = findPoint(line, sourcePoint, "x");
    if (!point || first && last) {
      continue;
    }
    if (first) {
      postponed.unshift(point);
    } else {
      points.push(point);
      if (!last) {
        break;
      }
    }
  }
  points.push(...postponed);
}
function findPoint(line, sourcePoint, property) {
  const point = line.interpolate(sourcePoint, property);
  if (!point) {
    return {};
  }
  const pointValue = point[property];
  const segments = line.segments;
  const linePoints = line.points;
  let first = false;
  let last = false;
  for (let i = 0; i < segments.length; i++) {
    const segment = segments[i];
    const firstValue = linePoints[segment.start][property];
    const lastValue = linePoints[segment.end][property];
    if (_isBetween(pointValue, firstValue, lastValue)) {
      first = pointValue === firstValue;
      last = pointValue === lastValue;
      break;
    }
  }
  return {
    first,
    last,
    point
  };
}
class simpleArc {
  constructor(opts) {
    this.x = opts.x;
    this.y = opts.y;
    this.radius = opts.radius;
  }
  pathSegment(ctx, bounds, opts) {
    const { x, y, radius } = this;
    bounds = bounds || {
      start: 0,
      end: TAU
    };
    ctx.arc(x, y, radius, bounds.end, bounds.start, true);
    return !opts.bounds;
  }
  interpolate(point) {
    const { x, y, radius } = this;
    const angle = point.angle;
    return {
      x: x + Math.cos(angle) * radius,
      y: y + Math.sin(angle) * radius,
      angle
    };
  }
}
function _getTarget(source) {
  const { chart, fill: fill2, line } = source;
  if (isNumberFinite(fill2)) {
    return getLineByIndex(chart, fill2);
  }
  if (fill2 === "stack") {
    return _buildStackLine(source);
  }
  if (fill2 === "shape") {
    return true;
  }
  const boundary = computeBoundary(source);
  if (boundary instanceof simpleArc) {
    return boundary;
  }
  return _createBoundaryLine(boundary, line);
}
function getLineByIndex(chart, index2) {
  const meta = chart.getDatasetMeta(index2);
  const visible = meta && chart.isDatasetVisible(index2);
  return visible ? meta.dataset : null;
}
function computeBoundary(source) {
  const scale = source.scale || {};
  if (scale.getPointPositionForValue) {
    return computeCircularBoundary(source);
  }
  return computeLinearBoundary(source);
}
function computeLinearBoundary(source) {
  const { scale = {}, fill: fill2 } = source;
  const pixel = _getTargetPixel(fill2, scale);
  if (isNumberFinite(pixel)) {
    const horizontal = scale.isHorizontal();
    return {
      x: horizontal ? pixel : null,
      y: horizontal ? null : pixel
    };
  }
  return null;
}
function computeCircularBoundary(source) {
  const { scale, fill: fill2 } = source;
  const options = scale.options;
  const length = scale.getLabels().length;
  const start = options.reverse ? scale.max : scale.min;
  const value = _getTargetValue(fill2, scale, start);
  const target = [];
  if (options.grid.circular) {
    const center = scale.getPointPositionForValue(0, start);
    return new simpleArc({
      x: center.x,
      y: center.y,
      radius: scale.getDistanceFromCenterForValue(value)
    });
  }
  for (let i = 0; i < length; ++i) {
    target.push(scale.getPointPositionForValue(i, value));
  }
  return target;
}
function _drawfill(ctx, source, area) {
  const target = _getTarget(source);
  const { line, scale, axis } = source;
  const lineOpts = line.options;
  const fillOption = lineOpts.fill;
  const color2 = lineOpts.backgroundColor;
  const { above = color2, below = color2 } = fillOption || {};
  if (target && line.points.length) {
    clipArea(ctx, area);
    doFill(ctx, {
      line,
      target,
      above,
      below,
      area,
      scale,
      axis
    });
    unclipArea(ctx);
  }
}
function doFill(ctx, cfg) {
  const { line, target, above, below, area, scale } = cfg;
  const property = line._loop ? "angle" : cfg.axis;
  ctx.save();
  if (property === "x" && below !== above) {
    clipVertical(ctx, target, area.top);
    fill(ctx, {
      line,
      target,
      color: above,
      scale,
      property
    });
    ctx.restore();
    ctx.save();
    clipVertical(ctx, target, area.bottom);
  }
  fill(ctx, {
    line,
    target,
    color: below,
    scale,
    property
  });
  ctx.restore();
}
function clipVertical(ctx, target, clipY) {
  const { segments, points } = target;
  let first = true;
  let lineLoop = false;
  ctx.beginPath();
  for (const segment of segments) {
    const { start, end } = segment;
    const firstPoint = points[start];
    const lastPoint = points[_findSegmentEnd(start, end, points)];
    if (first) {
      ctx.moveTo(firstPoint.x, firstPoint.y);
      first = false;
    } else {
      ctx.lineTo(firstPoint.x, clipY);
      ctx.lineTo(firstPoint.x, firstPoint.y);
    }
    lineLoop = !!target.pathSegment(ctx, segment, {
      move: lineLoop
    });
    if (lineLoop) {
      ctx.closePath();
    } else {
      ctx.lineTo(lastPoint.x, clipY);
    }
  }
  ctx.lineTo(target.first().x, clipY);
  ctx.closePath();
  ctx.clip();
}
function fill(ctx, cfg) {
  const { line, target, property, color: color2, scale } = cfg;
  const segments = _segments(line, target, property);
  for (const { source: src, target: tgt, start, end } of segments) {
    const { style: { backgroundColor = color2 } = {} } = src;
    const notShape = target !== true;
    ctx.save();
    ctx.fillStyle = backgroundColor;
    clipBounds(ctx, scale, notShape && _getBounds(property, start, end));
    ctx.beginPath();
    const lineLoop = !!line.pathSegment(ctx, src);
    let loop;
    if (notShape) {
      if (lineLoop) {
        ctx.closePath();
      } else {
        interpolatedLineTo(ctx, target, end, property);
      }
      const targetLoop = !!target.pathSegment(ctx, tgt, {
        move: lineLoop,
        reverse: true
      });
      loop = lineLoop && targetLoop;
      if (!loop) {
        interpolatedLineTo(ctx, target, start, property);
      }
    }
    ctx.closePath();
    ctx.fill(loop ? "evenodd" : "nonzero");
    ctx.restore();
  }
}
function clipBounds(ctx, scale, bounds) {
  const { top, bottom } = scale.chart.chartArea;
  const { property, start, end } = bounds || {};
  if (property === "x") {
    ctx.beginPath();
    ctx.rect(start, top, end - start, bottom - top);
    ctx.clip();
  }
}
function interpolatedLineTo(ctx, target, point, property) {
  const interpolatedPoint = target.interpolate(point, property);
  if (interpolatedPoint) {
    ctx.lineTo(interpolatedPoint.x, interpolatedPoint.y);
  }
}
var index = {
  id: "filler",
  afterDatasetsUpdate(chart, _args, options) {
    const count = (chart.data.datasets || []).length;
    const sources = [];
    let meta, i, line, source;
    for (i = 0; i < count; ++i) {
      meta = chart.getDatasetMeta(i);
      line = meta.dataset;
      source = null;
      if (line && line.options && line instanceof LineElement) {
        source = {
          visible: chart.isDatasetVisible(i),
          index: i,
          fill: _decodeFill(line, i, count),
          chart,
          axis: meta.controller.options.indexAxis,
          scale: meta.vScale,
          line
        };
      }
      meta.$filler = source;
      sources.push(source);
    }
    for (i = 0; i < count; ++i) {
      source = sources[i];
      if (!source || source.fill === false) {
        continue;
      }
      source.fill = _resolveTarget(sources, i, options.propagate);
    }
  },
  beforeDraw(chart, _args, options) {
    const draw2 = options.drawTime === "beforeDraw";
    const metasets = chart.getSortedVisibleDatasetMetas();
    const area = chart.chartArea;
    for (let i = metasets.length - 1; i >= 0; --i) {
      const source = metasets[i].$filler;
      if (!source) {
        continue;
      }
      source.line.updateControlPoints(area, source.axis);
      if (draw2 && source.fill) {
        _drawfill(chart.ctx, source, area);
      }
    }
  },
  beforeDatasetsDraw(chart, _args, options) {
    if (options.drawTime !== "beforeDatasetsDraw") {
      return;
    }
    const metasets = chart.getSortedVisibleDatasetMetas();
    for (let i = metasets.length - 1; i >= 0; --i) {
      const source = metasets[i].$filler;
      if (_shouldApplyFill(source)) {
        _drawfill(chart.ctx, source, chart.chartArea);
      }
    }
  },
  beforeDatasetDraw(chart, args, options) {
    const source = args.meta.$filler;
    if (!_shouldApplyFill(source) || options.drawTime !== "beforeDatasetDraw") {
      return;
    }
    _drawfill(chart.ctx, source, chart.chartArea);
  },
  defaults: {
    propagate: true,
    drawTime: "beforeDatasetDraw"
  }
};
const getBoxSize = (labelOpts, fontSize) => {
  let { boxHeight = fontSize, boxWidth = fontSize } = labelOpts;
  if (labelOpts.usePointStyle) {
    boxHeight = Math.min(boxHeight, fontSize);
    boxWidth = labelOpts.pointStyleWidth || Math.min(boxWidth, fontSize);
  }
  return {
    boxWidth,
    boxHeight,
    itemHeight: Math.max(fontSize, boxHeight)
  };
};
const itemsEqual = (a, b) => a !== null && b !== null && a.datasetIndex === b.datasetIndex && a.index === b.index;
class Legend extends Element {
  constructor(config) {
    super();
    this._added = false;
    this.legendHitBoxes = [];
    this._hoveredItem = null;
    this.doughnutMode = false;
    this.chart = config.chart;
    this.options = config.options;
    this.ctx = config.ctx;
    this.legendItems = void 0;
    this.columnSizes = void 0;
    this.lineWidths = void 0;
    this.maxHeight = void 0;
    this.maxWidth = void 0;
    this.top = void 0;
    this.bottom = void 0;
    this.left = void 0;
    this.right = void 0;
    this.height = void 0;
    this.width = void 0;
    this._margins = void 0;
    this.position = void 0;
    this.weight = void 0;
    this.fullSize = void 0;
  }
  update(maxWidth, maxHeight, margins) {
    this.maxWidth = maxWidth;
    this.maxHeight = maxHeight;
    this._margins = margins;
    this.setDimensions();
    this.buildLabels();
    this.fit();
  }
  setDimensions() {
    if (this.isHorizontal()) {
      this.width = this.maxWidth;
      this.left = this._margins.left;
      this.right = this.width;
    } else {
      this.height = this.maxHeight;
      this.top = this._margins.top;
      this.bottom = this.height;
    }
  }
  buildLabels() {
    const labelOpts = this.options.labels || {};
    let legendItems = callback(labelOpts.generateLabels, [
      this.chart
    ], this) || [];
    if (labelOpts.filter) {
      legendItems = legendItems.filter((item) => labelOpts.filter(item, this.chart.data));
    }
    if (labelOpts.sort) {
      legendItems = legendItems.sort((a, b) => labelOpts.sort(a, b, this.chart.data));
    }
    if (this.options.reverse) {
      legendItems.reverse();
    }
    this.legendItems = legendItems;
  }
  fit() {
    const { options, ctx } = this;
    if (!options.display) {
      this.width = this.height = 0;
      return;
    }
    const labelOpts = options.labels;
    const labelFont = toFont(labelOpts.font);
    const fontSize = labelFont.size;
    const titleHeight = this._computeTitleHeight();
    const { boxWidth, itemHeight } = getBoxSize(labelOpts, fontSize);
    let width, height;
    ctx.font = labelFont.string;
    if (this.isHorizontal()) {
      width = this.maxWidth;
      height = this._fitRows(titleHeight, fontSize, boxWidth, itemHeight) + 10;
    } else {
      height = this.maxHeight;
      width = this._fitCols(titleHeight, labelFont, boxWidth, itemHeight) + 10;
    }
    this.width = Math.min(width, options.maxWidth || this.maxWidth);
    this.height = Math.min(height, options.maxHeight || this.maxHeight);
  }
  _fitRows(titleHeight, fontSize, boxWidth, itemHeight) {
    const { ctx, maxWidth, options: { labels: { padding } } } = this;
    const hitboxes = this.legendHitBoxes = [];
    const lineWidths = this.lineWidths = [
      0
    ];
    const lineHeight = itemHeight + padding;
    let totalHeight = titleHeight;
    ctx.textAlign = "left";
    ctx.textBaseline = "middle";
    let row = -1;
    let top = -lineHeight;
    this.legendItems.forEach((legendItem, i) => {
      const itemWidth = boxWidth + fontSize / 2 + ctx.measureText(legendItem.text).width;
      if (i === 0 || lineWidths[lineWidths.length - 1] + itemWidth + 2 * padding > maxWidth) {
        totalHeight += lineHeight;
        lineWidths[lineWidths.length - (i > 0 ? 0 : 1)] = 0;
        top += lineHeight;
        row++;
      }
      hitboxes[i] = {
        left: 0,
        top,
        row,
        width: itemWidth,
        height: itemHeight
      };
      lineWidths[lineWidths.length - 1] += itemWidth + padding;
    });
    return totalHeight;
  }
  _fitCols(titleHeight, labelFont, boxWidth, _itemHeight) {
    const { ctx, maxHeight, options: { labels: { padding } } } = this;
    const hitboxes = this.legendHitBoxes = [];
    const columnSizes = this.columnSizes = [];
    const heightLimit = maxHeight - titleHeight;
    let totalWidth = padding;
    let currentColWidth = 0;
    let currentColHeight = 0;
    let left = 0;
    let col = 0;
    this.legendItems.forEach((legendItem, i) => {
      const { itemWidth, itemHeight } = calculateItemSize(boxWidth, labelFont, ctx, legendItem, _itemHeight);
      if (i > 0 && currentColHeight + itemHeight + 2 * padding > heightLimit) {
        totalWidth += currentColWidth + padding;
        columnSizes.push({
          width: currentColWidth,
          height: currentColHeight
        });
        left += currentColWidth + padding;
        col++;
        currentColWidth = currentColHeight = 0;
      }
      hitboxes[i] = {
        left,
        top: currentColHeight,
        col,
        width: itemWidth,
        height: itemHeight
      };
      currentColWidth = Math.max(currentColWidth, itemWidth);
      currentColHeight += itemHeight + padding;
    });
    totalWidth += currentColWidth;
    columnSizes.push({
      width: currentColWidth,
      height: currentColHeight
    });
    return totalWidth;
  }
  adjustHitBoxes() {
    if (!this.options.display) {
      return;
    }
    const titleHeight = this._computeTitleHeight();
    const { legendHitBoxes: hitboxes, options: { align, labels: { padding }, rtl } } = this;
    const rtlHelper = getRtlAdapter(rtl, this.left, this.width);
    if (this.isHorizontal()) {
      let row = 0;
      let left = _alignStartEnd(align, this.left + padding, this.right - this.lineWidths[row]);
      for (const hitbox of hitboxes) {
        if (row !== hitbox.row) {
          row = hitbox.row;
          left = _alignStartEnd(align, this.left + padding, this.right - this.lineWidths[row]);
        }
        hitbox.top += this.top + titleHeight + padding;
        hitbox.left = rtlHelper.leftForLtr(rtlHelper.x(left), hitbox.width);
        left += hitbox.width + padding;
      }
    } else {
      let col = 0;
      let top = _alignStartEnd(align, this.top + titleHeight + padding, this.bottom - this.columnSizes[col].height);
      for (const hitbox1 of hitboxes) {
        if (hitbox1.col !== col) {
          col = hitbox1.col;
          top = _alignStartEnd(align, this.top + titleHeight + padding, this.bottom - this.columnSizes[col].height);
        }
        hitbox1.top = top;
        hitbox1.left += this.left + padding;
        hitbox1.left = rtlHelper.leftForLtr(rtlHelper.x(hitbox1.left), hitbox1.width);
        top += hitbox1.height + padding;
      }
    }
  }
  isHorizontal() {
    return this.options.position === "top" || this.options.position === "bottom";
  }
  draw() {
    if (this.options.display) {
      const ctx = this.ctx;
      clipArea(ctx, this);
      this._draw();
      unclipArea(ctx);
    }
  }
  _draw() {
    const { options: opts, columnSizes, lineWidths, ctx } = this;
    const { align, labels: labelOpts } = opts;
    const defaultColor = defaults.color;
    const rtlHelper = getRtlAdapter(opts.rtl, this.left, this.width);
    const labelFont = toFont(labelOpts.font);
    const { padding } = labelOpts;
    const fontSize = labelFont.size;
    const halfFontSize = fontSize / 2;
    let cursor;
    this.drawTitle();
    ctx.textAlign = rtlHelper.textAlign("left");
    ctx.textBaseline = "middle";
    ctx.lineWidth = 0.5;
    ctx.font = labelFont.string;
    const { boxWidth, boxHeight, itemHeight } = getBoxSize(labelOpts, fontSize);
    const drawLegendBox = function(x, y, legendItem) {
      if (isNaN(boxWidth) || boxWidth <= 0 || isNaN(boxHeight) || boxHeight < 0) {
        return;
      }
      ctx.save();
      const lineWidth = valueOrDefault(legendItem.lineWidth, 1);
      ctx.fillStyle = valueOrDefault(legendItem.fillStyle, defaultColor);
      ctx.lineCap = valueOrDefault(legendItem.lineCap, "butt");
      ctx.lineDashOffset = valueOrDefault(legendItem.lineDashOffset, 0);
      ctx.lineJoin = valueOrDefault(legendItem.lineJoin, "miter");
      ctx.lineWidth = lineWidth;
      ctx.strokeStyle = valueOrDefault(legendItem.strokeStyle, defaultColor);
      ctx.setLineDash(valueOrDefault(legendItem.lineDash, []));
      if (labelOpts.usePointStyle) {
        const drawOptions = {
          radius: boxHeight * Math.SQRT2 / 2,
          pointStyle: legendItem.pointStyle,
          rotation: legendItem.rotation,
          borderWidth: lineWidth
        };
        const centerX = rtlHelper.xPlus(x, boxWidth / 2);
        const centerY = y + halfFontSize;
        drawPointLegend(ctx, drawOptions, centerX, centerY, labelOpts.pointStyleWidth && boxWidth);
      } else {
        const yBoxTop = y + Math.max((fontSize - boxHeight) / 2, 0);
        const xBoxLeft = rtlHelper.leftForLtr(x, boxWidth);
        const borderRadius = toTRBLCorners(legendItem.borderRadius);
        ctx.beginPath();
        if (Object.values(borderRadius).some((v) => v !== 0)) {
          addRoundedRectPath(ctx, {
            x: xBoxLeft,
            y: yBoxTop,
            w: boxWidth,
            h: boxHeight,
            radius: borderRadius
          });
        } else {
          ctx.rect(xBoxLeft, yBoxTop, boxWidth, boxHeight);
        }
        ctx.fill();
        if (lineWidth !== 0) {
          ctx.stroke();
        }
      }
      ctx.restore();
    };
    const fillText = function(x, y, legendItem) {
      renderText(ctx, legendItem.text, x, y + itemHeight / 2, labelFont, {
        strikethrough: legendItem.hidden,
        textAlign: rtlHelper.textAlign(legendItem.textAlign)
      });
    };
    const isHorizontal = this.isHorizontal();
    const titleHeight = this._computeTitleHeight();
    if (isHorizontal) {
      cursor = {
        x: _alignStartEnd(align, this.left + padding, this.right - lineWidths[0]),
        y: this.top + padding + titleHeight,
        line: 0
      };
    } else {
      cursor = {
        x: this.left + padding,
        y: _alignStartEnd(align, this.top + titleHeight + padding, this.bottom - columnSizes[0].height),
        line: 0
      };
    }
    overrideTextDirection(this.ctx, opts.textDirection);
    const lineHeight = itemHeight + padding;
    this.legendItems.forEach((legendItem, i) => {
      ctx.strokeStyle = legendItem.fontColor;
      ctx.fillStyle = legendItem.fontColor;
      const textWidth = ctx.measureText(legendItem.text).width;
      const textAlign = rtlHelper.textAlign(legendItem.textAlign || (legendItem.textAlign = labelOpts.textAlign));
      const width = boxWidth + halfFontSize + textWidth;
      let x = cursor.x;
      let y = cursor.y;
      rtlHelper.setWidth(this.width);
      if (isHorizontal) {
        if (i > 0 && x + width + padding > this.right) {
          y = cursor.y += lineHeight;
          cursor.line++;
          x = cursor.x = _alignStartEnd(align, this.left + padding, this.right - lineWidths[cursor.line]);
        }
      } else if (i > 0 && y + lineHeight > this.bottom) {
        x = cursor.x = x + columnSizes[cursor.line].width + padding;
        cursor.line++;
        y = cursor.y = _alignStartEnd(align, this.top + titleHeight + padding, this.bottom - columnSizes[cursor.line].height);
      }
      const realX = rtlHelper.x(x);
      drawLegendBox(realX, y, legendItem);
      x = _textX(textAlign, x + boxWidth + halfFontSize, isHorizontal ? x + width : this.right, opts.rtl);
      fillText(rtlHelper.x(x), y, legendItem);
      if (isHorizontal) {
        cursor.x += width + padding;
      } else if (typeof legendItem.text !== "string") {
        const fontLineHeight = labelFont.lineHeight;
        cursor.y += calculateLegendItemHeight(legendItem, fontLineHeight);
      } else {
        cursor.y += lineHeight;
      }
    });
    restoreTextDirection(this.ctx, opts.textDirection);
  }
  drawTitle() {
    const opts = this.options;
    const titleOpts = opts.title;
    const titleFont = toFont(titleOpts.font);
    const titlePadding = toPadding(titleOpts.padding);
    if (!titleOpts.display) {
      return;
    }
    const rtlHelper = getRtlAdapter(opts.rtl, this.left, this.width);
    const ctx = this.ctx;
    const position = titleOpts.position;
    const halfFontSize = titleFont.size / 2;
    const topPaddingPlusHalfFontSize = titlePadding.top + halfFontSize;
    let y;
    let left = this.left;
    let maxWidth = this.width;
    if (this.isHorizontal()) {
      maxWidth = Math.max(...this.lineWidths);
      y = this.top + topPaddingPlusHalfFontSize;
      left = _alignStartEnd(opts.align, left, this.right - maxWidth);
    } else {
      const maxHeight = this.columnSizes.reduce((acc, size) => Math.max(acc, size.height), 0);
      y = topPaddingPlusHalfFontSize + _alignStartEnd(opts.align, this.top, this.bottom - maxHeight - opts.labels.padding - this._computeTitleHeight());
    }
    const x = _alignStartEnd(position, left, left + maxWidth);
    ctx.textAlign = rtlHelper.textAlign(_toLeftRightCenter(position));
    ctx.textBaseline = "middle";
    ctx.strokeStyle = titleOpts.color;
    ctx.fillStyle = titleOpts.color;
    ctx.font = titleFont.string;
    renderText(ctx, titleOpts.text, x, y, titleFont);
  }
  _computeTitleHeight() {
    const titleOpts = this.options.title;
    const titleFont = toFont(titleOpts.font);
    const titlePadding = toPadding(titleOpts.padding);
    return titleOpts.display ? titleFont.lineHeight + titlePadding.height : 0;
  }
  _getLegendItemAt(x, y) {
    let i, hitBox, lh;
    if (_isBetween(x, this.left, this.right) && _isBetween(y, this.top, this.bottom)) {
      lh = this.legendHitBoxes;
      for (i = 0; i < lh.length; ++i) {
        hitBox = lh[i];
        if (_isBetween(x, hitBox.left, hitBox.left + hitBox.width) && _isBetween(y, hitBox.top, hitBox.top + hitBox.height)) {
          return this.legendItems[i];
        }
      }
    }
    return null;
  }
  handleEvent(e) {
    const opts = this.options;
    if (!isListened(e.type, opts)) {
      return;
    }
    const hoveredItem = this._getLegendItemAt(e.x, e.y);
    if (e.type === "mousemove" || e.type === "mouseout") {
      const previous = this._hoveredItem;
      const sameItem = itemsEqual(previous, hoveredItem);
      if (previous && !sameItem) {
        callback(opts.onLeave, [
          e,
          previous,
          this
        ], this);
      }
      this._hoveredItem = hoveredItem;
      if (hoveredItem && !sameItem) {
        callback(opts.onHover, [
          e,
          hoveredItem,
          this
        ], this);
      }
    } else if (hoveredItem) {
      callback(opts.onClick, [
        e,
        hoveredItem,
        this
      ], this);
    }
  }
}
function calculateItemSize(boxWidth, labelFont, ctx, legendItem, _itemHeight) {
  const itemWidth = calculateItemWidth(legendItem, boxWidth, labelFont, ctx);
  const itemHeight = calculateItemHeight(_itemHeight, legendItem, labelFont.lineHeight);
  return {
    itemWidth,
    itemHeight
  };
}
function calculateItemWidth(legendItem, boxWidth, labelFont, ctx) {
  let legendItemText = legendItem.text;
  if (legendItemText && typeof legendItemText !== "string") {
    legendItemText = legendItemText.reduce((a, b) => a.length > b.length ? a : b);
  }
  return boxWidth + labelFont.size / 2 + ctx.measureText(legendItemText).width;
}
function calculateItemHeight(_itemHeight, legendItem, fontLineHeight) {
  let itemHeight = _itemHeight;
  if (typeof legendItem.text !== "string") {
    itemHeight = calculateLegendItemHeight(legendItem, fontLineHeight);
  }
  return itemHeight;
}
function calculateLegendItemHeight(legendItem, fontLineHeight) {
  const labelHeight = legendItem.text ? legendItem.text.length + 0.5 : 0;
  return fontLineHeight * labelHeight;
}
function isListened(type, opts) {
  if ((type === "mousemove" || type === "mouseout") && (opts.onHover || opts.onLeave)) {
    return true;
  }
  if (opts.onClick && (type === "click" || type === "mouseup")) {
    return true;
  }
  return false;
}
var plugin_legend = {
  id: "legend",
  _element: Legend,
  start(chart, _args, options) {
    const legend = chart.legend = new Legend({
      ctx: chart.ctx,
      options,
      chart
    });
    layouts.configure(chart, legend, options);
    layouts.addBox(chart, legend);
  },
  stop(chart) {
    layouts.removeBox(chart, chart.legend);
    delete chart.legend;
  },
  beforeUpdate(chart, _args, options) {
    const legend = chart.legend;
    layouts.configure(chart, legend, options);
    legend.options = options;
  },
  afterUpdate(chart) {
    const legend = chart.legend;
    legend.buildLabels();
    legend.adjustHitBoxes();
  },
  afterEvent(chart, args) {
    if (!args.replay) {
      chart.legend.handleEvent(args.event);
    }
  },
  defaults: {
    display: true,
    position: "top",
    align: "center",
    fullSize: true,
    reverse: false,
    weight: 1e3,
    onClick(e, legendItem, legend) {
      const index2 = legendItem.datasetIndex;
      const ci = legend.chart;
      if (ci.isDatasetVisible(index2)) {
        ci.hide(index2);
        legendItem.hidden = true;
      } else {
        ci.show(index2);
        legendItem.hidden = false;
      }
    },
    onHover: null,
    onLeave: null,
    labels: {
      color: (ctx) => ctx.chart.options.color,
      boxWidth: 40,
      padding: 10,
      generateLabels(chart) {
        const datasets = chart.data.datasets;
        const { labels: { usePointStyle, pointStyle, textAlign, color: color2, useBorderRadius, borderRadius } } = chart.legend.options;
        return chart._getSortedDatasetMetas().map((meta) => {
          const style = meta.controller.getStyle(usePointStyle ? 0 : void 0);
          const borderWidth = toPadding(style.borderWidth);
          return {
            text: datasets[meta.index].label,
            fillStyle: style.backgroundColor,
            fontColor: color2,
            hidden: !meta.visible,
            lineCap: style.borderCapStyle,
            lineDash: style.borderDash,
            lineDashOffset: style.borderDashOffset,
            lineJoin: style.borderJoinStyle,
            lineWidth: (borderWidth.width + borderWidth.height) / 4,
            strokeStyle: style.borderColor,
            pointStyle: pointStyle || style.pointStyle,
            rotation: style.rotation,
            textAlign: textAlign || style.textAlign,
            borderRadius: useBorderRadius && (borderRadius || style.borderRadius),
            datasetIndex: meta.index
          };
        }, this);
      }
    },
    title: {
      color: (ctx) => ctx.chart.options.color,
      display: false,
      position: "center",
      text: ""
    }
  },
  descriptors: {
    _scriptable: (name2) => !name2.startsWith("on"),
    labels: {
      _scriptable: (name2) => ![
        "generateLabels",
        "filter",
        "sort"
      ].includes(name2)
    }
  }
};
class Title extends Element {
  constructor(config) {
    super();
    this.chart = config.chart;
    this.options = config.options;
    this.ctx = config.ctx;
    this._padding = void 0;
    this.top = void 0;
    this.bottom = void 0;
    this.left = void 0;
    this.right = void 0;
    this.width = void 0;
    this.height = void 0;
    this.position = void 0;
    this.weight = void 0;
    this.fullSize = void 0;
  }
  update(maxWidth, maxHeight) {
    const opts = this.options;
    this.left = 0;
    this.top = 0;
    if (!opts.display) {
      this.width = this.height = this.right = this.bottom = 0;
      return;
    }
    this.width = this.right = maxWidth;
    this.height = this.bottom = maxHeight;
    const lineCount = isArray(opts.text) ? opts.text.length : 1;
    this._padding = toPadding(opts.padding);
    const textSize = lineCount * toFont(opts.font).lineHeight + this._padding.height;
    if (this.isHorizontal()) {
      this.height = textSize;
    } else {
      this.width = textSize;
    }
  }
  isHorizontal() {
    const pos = this.options.position;
    return pos === "top" || pos === "bottom";
  }
  _drawArgs(offset) {
    const { top, left, bottom, right, options } = this;
    const align = options.align;
    let rotation = 0;
    let maxWidth, titleX, titleY;
    if (this.isHorizontal()) {
      titleX = _alignStartEnd(align, left, right);
      titleY = top + offset;
      maxWidth = right - left;
    } else {
      if (options.position === "left") {
        titleX = left + offset;
        titleY = _alignStartEnd(align, bottom, top);
        rotation = PI * -0.5;
      } else {
        titleX = right - offset;
        titleY = _alignStartEnd(align, top, bottom);
        rotation = PI * 0.5;
      }
      maxWidth = bottom - top;
    }
    return {
      titleX,
      titleY,
      maxWidth,
      rotation
    };
  }
  draw() {
    const ctx = this.ctx;
    const opts = this.options;
    if (!opts.display) {
      return;
    }
    const fontOpts = toFont(opts.font);
    const lineHeight = fontOpts.lineHeight;
    const offset = lineHeight / 2 + this._padding.top;
    const { titleX, titleY, maxWidth, rotation } = this._drawArgs(offset);
    renderText(ctx, opts.text, 0, 0, fontOpts, {
      color: opts.color,
      maxWidth,
      rotation,
      textAlign: _toLeftRightCenter(opts.align),
      textBaseline: "middle",
      translation: [
        titleX,
        titleY
      ]
    });
  }
}
function createTitle(chart, titleOpts) {
  const title = new Title({
    ctx: chart.ctx,
    options: titleOpts,
    chart
  });
  layouts.configure(chart, title, titleOpts);
  layouts.addBox(chart, title);
  chart.titleBlock = title;
}
var plugin_title = {
  id: "title",
  _element: Title,
  start(chart, _args, options) {
    createTitle(chart, options);
  },
  stop(chart) {
    const titleBlock = chart.titleBlock;
    layouts.removeBox(chart, titleBlock);
    delete chart.titleBlock;
  },
  beforeUpdate(chart, _args, options) {
    const title = chart.titleBlock;
    layouts.configure(chart, title, options);
    title.options = options;
  },
  defaults: {
    align: "center",
    display: false,
    font: {
      weight: "bold"
    },
    fullSize: true,
    padding: 10,
    position: "top",
    text: "",
    weight: 2e3
  },
  defaultRoutes: {
    color: "color"
  },
  descriptors: {
    _scriptable: true,
    _indexable: false
  }
};
const map = /* @__PURE__ */ new WeakMap();
var plugin_subtitle = {
  id: "subtitle",
  start(chart, _args, options) {
    const title = new Title({
      ctx: chart.ctx,
      options,
      chart
    });
    layouts.configure(chart, title, options);
    layouts.addBox(chart, title);
    map.set(chart, title);
  },
  stop(chart) {
    layouts.removeBox(chart, map.get(chart));
    map.delete(chart);
  },
  beforeUpdate(chart, _args, options) {
    const title = map.get(chart);
    layouts.configure(chart, title, options);
    title.options = options;
  },
  defaults: {
    align: "center",
    display: false,
    font: {
      weight: "normal"
    },
    fullSize: true,
    padding: 0,
    position: "top",
    text: "",
    weight: 1500
  },
  defaultRoutes: {
    color: "color"
  },
  descriptors: {
    _scriptable: true,
    _indexable: false
  }
};
const positioners = {
  average(items) {
    if (!items.length) {
      return false;
    }
    let i, len;
    let x = 0;
    let y = 0;
    let count = 0;
    for (i = 0, len = items.length; i < len; ++i) {
      const el = items[i].element;
      if (el && el.hasValue()) {
        const pos = el.tooltipPosition();
        x += pos.x;
        y += pos.y;
        ++count;
      }
    }
    return {
      x: x / count,
      y: y / count
    };
  },
  nearest(items, eventPosition) {
    if (!items.length) {
      return false;
    }
    let x = eventPosition.x;
    let y = eventPosition.y;
    let minDistance = Number.POSITIVE_INFINITY;
    let i, len, nearestElement;
    for (i = 0, len = items.length; i < len; ++i) {
      const el = items[i].element;
      if (el && el.hasValue()) {
        const center = el.getCenterPoint();
        const d = distanceBetweenPoints(eventPosition, center);
        if (d < minDistance) {
          minDistance = d;
          nearestElement = el;
        }
      }
    }
    if (nearestElement) {
      const tp = nearestElement.tooltipPosition();
      x = tp.x;
      y = tp.y;
    }
    return {
      x,
      y
    };
  }
};
function pushOrConcat(base, toPush) {
  if (toPush) {
    if (isArray(toPush)) {
      Array.prototype.push.apply(base, toPush);
    } else {
      base.push(toPush);
    }
  }
  return base;
}
function splitNewlines(str) {
  if ((typeof str === "string" || str instanceof String) && str.indexOf("\n") > -1) {
    return str.split("\n");
  }
  return str;
}
function createTooltipItem(chart, item) {
  const { element, datasetIndex, index: index2 } = item;
  const controller = chart.getDatasetMeta(datasetIndex).controller;
  const { label, value } = controller.getLabelAndValue(index2);
  return {
    chart,
    label,
    parsed: controller.getParsed(index2),
    raw: chart.data.datasets[datasetIndex].data[index2],
    formattedValue: value,
    dataset: controller.getDataset(),
    dataIndex: index2,
    datasetIndex,
    element
  };
}
function getTooltipSize(tooltip, options) {
  const ctx = tooltip.chart.ctx;
  const { body, footer, title } = tooltip;
  const { boxWidth, boxHeight } = options;
  const bodyFont = toFont(options.bodyFont);
  const titleFont = toFont(options.titleFont);
  const footerFont = toFont(options.footerFont);
  const titleLineCount = title.length;
  const footerLineCount = footer.length;
  const bodyLineItemCount = body.length;
  const padding = toPadding(options.padding);
  let height = padding.height;
  let width = 0;
  let combinedBodyLength = body.reduce((count, bodyItem) => count + bodyItem.before.length + bodyItem.lines.length + bodyItem.after.length, 0);
  combinedBodyLength += tooltip.beforeBody.length + tooltip.afterBody.length;
  if (titleLineCount) {
    height += titleLineCount * titleFont.lineHeight + (titleLineCount - 1) * options.titleSpacing + options.titleMarginBottom;
  }
  if (combinedBodyLength) {
    const bodyLineHeight = options.displayColors ? Math.max(boxHeight, bodyFont.lineHeight) : bodyFont.lineHeight;
    height += bodyLineItemCount * bodyLineHeight + (combinedBodyLength - bodyLineItemCount) * bodyFont.lineHeight + (combinedBodyLength - 1) * options.bodySpacing;
  }
  if (footerLineCount) {
    height += options.footerMarginTop + footerLineCount * footerFont.lineHeight + (footerLineCount - 1) * options.footerSpacing;
  }
  let widthPadding = 0;
  const maxLineWidth = function(line) {
    width = Math.max(width, ctx.measureText(line).width + widthPadding);
  };
  ctx.save();
  ctx.font = titleFont.string;
  each(tooltip.title, maxLineWidth);
  ctx.font = bodyFont.string;
  each(tooltip.beforeBody.concat(tooltip.afterBody), maxLineWidth);
  widthPadding = options.displayColors ? boxWidth + 2 + options.boxPadding : 0;
  each(body, (bodyItem) => {
    each(bodyItem.before, maxLineWidth);
    each(bodyItem.lines, maxLineWidth);
    each(bodyItem.after, maxLineWidth);
  });
  widthPadding = 0;
  ctx.font = footerFont.string;
  each(tooltip.footer, maxLineWidth);
  ctx.restore();
  width += padding.width;
  return {
    width,
    height
  };
}
function determineYAlign(chart, size) {
  const { y, height } = size;
  if (y < height / 2) {
    return "top";
  } else if (y > chart.height - height / 2) {
    return "bottom";
  }
  return "center";
}
function doesNotFitWithAlign(xAlign, chart, options, size) {
  const { x, width } = size;
  const caret = options.caretSize + options.caretPadding;
  if (xAlign === "left" && x + width + caret > chart.width) {
    return true;
  }
  if (xAlign === "right" && x - width - caret < 0) {
    return true;
  }
}
function determineXAlign(chart, options, size, yAlign) {
  const { x, width } = size;
  const { width: chartWidth, chartArea: { left, right } } = chart;
  let xAlign = "center";
  if (yAlign === "center") {
    xAlign = x <= (left + right) / 2 ? "left" : "right";
  } else if (x <= width / 2) {
    xAlign = "left";
  } else if (x >= chartWidth - width / 2) {
    xAlign = "right";
  }
  if (doesNotFitWithAlign(xAlign, chart, options, size)) {
    xAlign = "center";
  }
  return xAlign;
}
function determineAlignment(chart, options, size) {
  const yAlign = size.yAlign || options.yAlign || determineYAlign(chart, size);
  return {
    xAlign: size.xAlign || options.xAlign || determineXAlign(chart, options, size, yAlign),
    yAlign
  };
}
function alignX(size, xAlign) {
  let { x, width } = size;
  if (xAlign === "right") {
    x -= width;
  } else if (xAlign === "center") {
    x -= width / 2;
  }
  return x;
}
function alignY(size, yAlign, paddingAndSize) {
  let { y, height } = size;
  if (yAlign === "top") {
    y += paddingAndSize;
  } else if (yAlign === "bottom") {
    y -= height + paddingAndSize;
  } else {
    y -= height / 2;
  }
  return y;
}
function getBackgroundPoint(options, size, alignment, chart) {
  const { caretSize, caretPadding, cornerRadius } = options;
  const { xAlign, yAlign } = alignment;
  const paddingAndSize = caretSize + caretPadding;
  const { topLeft, topRight, bottomLeft, bottomRight } = toTRBLCorners(cornerRadius);
  let x = alignX(size, xAlign);
  const y = alignY(size, yAlign, paddingAndSize);
  if (yAlign === "center") {
    if (xAlign === "left") {
      x += paddingAndSize;
    } else if (xAlign === "right") {
      x -= paddingAndSize;
    }
  } else if (xAlign === "left") {
    x -= Math.max(topLeft, bottomLeft) + caretSize;
  } else if (xAlign === "right") {
    x += Math.max(topRight, bottomRight) + caretSize;
  }
  return {
    x: _limitValue(x, 0, chart.width - size.width),
    y: _limitValue(y, 0, chart.height - size.height)
  };
}
function getAlignedX(tooltip, align, options) {
  const padding = toPadding(options.padding);
  return align === "center" ? tooltip.x + tooltip.width / 2 : align === "right" ? tooltip.x + tooltip.width - padding.right : tooltip.x + padding.left;
}
function getBeforeAfterBodyLines(callback2) {
  return pushOrConcat([], splitNewlines(callback2));
}
function createTooltipContext(parent, tooltip, tooltipItems) {
  return createContext(parent, {
    tooltip,
    tooltipItems,
    type: "tooltip"
  });
}
function overrideCallbacks(callbacks, context) {
  const override = context && context.dataset && context.dataset.tooltip && context.dataset.tooltip.callbacks;
  return override ? callbacks.override(override) : callbacks;
}
const defaultCallbacks = {
  beforeTitle: noop,
  title(tooltipItems) {
    if (tooltipItems.length > 0) {
      const item = tooltipItems[0];
      const labels = item.chart.data.labels;
      const labelCount = labels ? labels.length : 0;
      if (this && this.options && this.options.mode === "dataset") {
        return item.dataset.label || "";
      } else if (item.label) {
        return item.label;
      } else if (labelCount > 0 && item.dataIndex < labelCount) {
        return labels[item.dataIndex];
      }
    }
    return "";
  },
  afterTitle: noop,
  beforeBody: noop,
  beforeLabel: noop,
  label(tooltipItem) {
    if (this && this.options && this.options.mode === "dataset") {
      return tooltipItem.label + ": " + tooltipItem.formattedValue || tooltipItem.formattedValue;
    }
    let label = tooltipItem.dataset.label || "";
    if (label) {
      label += ": ";
    }
    const value = tooltipItem.formattedValue;
    if (!isNullOrUndef(value)) {
      label += value;
    }
    return label;
  },
  labelColor(tooltipItem) {
    const meta = tooltipItem.chart.getDatasetMeta(tooltipItem.datasetIndex);
    const options = meta.controller.getStyle(tooltipItem.dataIndex);
    return {
      borderColor: options.borderColor,
      backgroundColor: options.backgroundColor,
      borderWidth: options.borderWidth,
      borderDash: options.borderDash,
      borderDashOffset: options.borderDashOffset,
      borderRadius: 0
    };
  },
  labelTextColor() {
    return this.options.bodyColor;
  },
  labelPointStyle(tooltipItem) {
    const meta = tooltipItem.chart.getDatasetMeta(tooltipItem.datasetIndex);
    const options = meta.controller.getStyle(tooltipItem.dataIndex);
    return {
      pointStyle: options.pointStyle,
      rotation: options.rotation
    };
  },
  afterLabel: noop,
  afterBody: noop,
  beforeFooter: noop,
  footer: noop,
  afterFooter: noop
};
function invokeCallbackWithFallback(callbacks, name2, ctx, arg) {
  const result = callbacks[name2].call(ctx, arg);
  if (typeof result === "undefined") {
    return defaultCallbacks[name2].call(ctx, arg);
  }
  return result;
}
class Tooltip extends Element {
  constructor(config) {
    super();
    this.opacity = 0;
    this._active = [];
    this._eventPosition = void 0;
    this._size = void 0;
    this._cachedAnimations = void 0;
    this._tooltipItems = [];
    this.$animations = void 0;
    this.$context = void 0;
    this.chart = config.chart;
    this.options = config.options;
    this.dataPoints = void 0;
    this.title = void 0;
    this.beforeBody = void 0;
    this.body = void 0;
    this.afterBody = void 0;
    this.footer = void 0;
    this.xAlign = void 0;
    this.yAlign = void 0;
    this.x = void 0;
    this.y = void 0;
    this.height = void 0;
    this.width = void 0;
    this.caretX = void 0;
    this.caretY = void 0;
    this.labelColors = void 0;
    this.labelPointStyles = void 0;
    this.labelTextColors = void 0;
  }
  initialize(options) {
    this.options = options;
    this._cachedAnimations = void 0;
    this.$context = void 0;
  }
  _resolveAnimations() {
    const cached = this._cachedAnimations;
    if (cached) {
      return cached;
    }
    const chart = this.chart;
    const options = this.options.setContext(this.getContext());
    const opts = options.enabled && chart.options.animation && options.animations;
    const animations = new Animations(this.chart, opts);
    if (opts._cacheable) {
      this._cachedAnimations = Object.freeze(animations);
    }
    return animations;
  }
  getContext() {
    return this.$context || (this.$context = createTooltipContext(this.chart.getContext(), this, this._tooltipItems));
  }
  getTitle(context, options) {
    const { callbacks } = options;
    const beforeTitle = invokeCallbackWithFallback(callbacks, "beforeTitle", this, context);
    const title = invokeCallbackWithFallback(callbacks, "title", this, context);
    const afterTitle = invokeCallbackWithFallback(callbacks, "afterTitle", this, context);
    let lines = [];
    lines = pushOrConcat(lines, splitNewlines(beforeTitle));
    lines = pushOrConcat(lines, splitNewlines(title));
    lines = pushOrConcat(lines, splitNewlines(afterTitle));
    return lines;
  }
  getBeforeBody(tooltipItems, options) {
    return getBeforeAfterBodyLines(invokeCallbackWithFallback(options.callbacks, "beforeBody", this, tooltipItems));
  }
  getBody(tooltipItems, options) {
    const { callbacks } = options;
    const bodyItems = [];
    each(tooltipItems, (context) => {
      const bodyItem = {
        before: [],
        lines: [],
        after: []
      };
      const scoped = overrideCallbacks(callbacks, context);
      pushOrConcat(bodyItem.before, splitNewlines(invokeCallbackWithFallback(scoped, "beforeLabel", this, context)));
      pushOrConcat(bodyItem.lines, invokeCallbackWithFallback(scoped, "label", this, context));
      pushOrConcat(bodyItem.after, splitNewlines(invokeCallbackWithFallback(scoped, "afterLabel", this, context)));
      bodyItems.push(bodyItem);
    });
    return bodyItems;
  }
  getAfterBody(tooltipItems, options) {
    return getBeforeAfterBodyLines(invokeCallbackWithFallback(options.callbacks, "afterBody", this, tooltipItems));
  }
  getFooter(tooltipItems, options) {
    const { callbacks } = options;
    const beforeFooter = invokeCallbackWithFallback(callbacks, "beforeFooter", this, tooltipItems);
    const footer = invokeCallbackWithFallback(callbacks, "footer", this, tooltipItems);
    const afterFooter = invokeCallbackWithFallback(callbacks, "afterFooter", this, tooltipItems);
    let lines = [];
    lines = pushOrConcat(lines, splitNewlines(beforeFooter));
    lines = pushOrConcat(lines, splitNewlines(footer));
    lines = pushOrConcat(lines, splitNewlines(afterFooter));
    return lines;
  }
  _createItems(options) {
    const active = this._active;
    const data = this.chart.data;
    const labelColors = [];
    const labelPointStyles = [];
    const labelTextColors = [];
    let tooltipItems = [];
    let i, len;
    for (i = 0, len = active.length; i < len; ++i) {
      tooltipItems.push(createTooltipItem(this.chart, active[i]));
    }
    if (options.filter) {
      tooltipItems = tooltipItems.filter((element, index2, array) => options.filter(element, index2, array, data));
    }
    if (options.itemSort) {
      tooltipItems = tooltipItems.sort((a, b) => options.itemSort(a, b, data));
    }
    each(tooltipItems, (context) => {
      const scoped = overrideCallbacks(options.callbacks, context);
      labelColors.push(invokeCallbackWithFallback(scoped, "labelColor", this, context));
      labelPointStyles.push(invokeCallbackWithFallback(scoped, "labelPointStyle", this, context));
      labelTextColors.push(invokeCallbackWithFallback(scoped, "labelTextColor", this, context));
    });
    this.labelColors = labelColors;
    this.labelPointStyles = labelPointStyles;
    this.labelTextColors = labelTextColors;
    this.dataPoints = tooltipItems;
    return tooltipItems;
  }
  update(changed, replay) {
    const options = this.options.setContext(this.getContext());
    const active = this._active;
    let properties;
    let tooltipItems = [];
    if (!active.length) {
      if (this.opacity !== 0) {
        properties = {
          opacity: 0
        };
      }
    } else {
      const position = positioners[options.position].call(this, active, this._eventPosition);
      tooltipItems = this._createItems(options);
      this.title = this.getTitle(tooltipItems, options);
      this.beforeBody = this.getBeforeBody(tooltipItems, options);
      this.body = this.getBody(tooltipItems, options);
      this.afterBody = this.getAfterBody(tooltipItems, options);
      this.footer = this.getFooter(tooltipItems, options);
      const size = this._size = getTooltipSize(this, options);
      const positionAndSize = Object.assign({}, position, size);
      const alignment = determineAlignment(this.chart, options, positionAndSize);
      const backgroundPoint = getBackgroundPoint(options, positionAndSize, alignment, this.chart);
      this.xAlign = alignment.xAlign;
      this.yAlign = alignment.yAlign;
      properties = {
        opacity: 1,
        x: backgroundPoint.x,
        y: backgroundPoint.y,
        width: size.width,
        height: size.height,
        caretX: position.x,
        caretY: position.y
      };
    }
    this._tooltipItems = tooltipItems;
    this.$context = void 0;
    if (properties) {
      this._resolveAnimations().update(this, properties);
    }
    if (changed && options.external) {
      options.external.call(this, {
        chart: this.chart,
        tooltip: this,
        replay
      });
    }
  }
  drawCaret(tooltipPoint, ctx, size, options) {
    const caretPosition = this.getCaretPosition(tooltipPoint, size, options);
    ctx.lineTo(caretPosition.x1, caretPosition.y1);
    ctx.lineTo(caretPosition.x2, caretPosition.y2);
    ctx.lineTo(caretPosition.x3, caretPosition.y3);
  }
  getCaretPosition(tooltipPoint, size, options) {
    const { xAlign, yAlign } = this;
    const { caretSize, cornerRadius } = options;
    const { topLeft, topRight, bottomLeft, bottomRight } = toTRBLCorners(cornerRadius);
    const { x: ptX, y: ptY } = tooltipPoint;
    const { width, height } = size;
    let x1, x2, x3, y1, y2, y3;
    if (yAlign === "center") {
      y2 = ptY + height / 2;
      if (xAlign === "left") {
        x1 = ptX;
        x2 = x1 - caretSize;
        y1 = y2 + caretSize;
        y3 = y2 - caretSize;
      } else {
        x1 = ptX + width;
        x2 = x1 + caretSize;
        y1 = y2 - caretSize;
        y3 = y2 + caretSize;
      }
      x3 = x1;
    } else {
      if (xAlign === "left") {
        x2 = ptX + Math.max(topLeft, bottomLeft) + caretSize;
      } else if (xAlign === "right") {
        x2 = ptX + width - Math.max(topRight, bottomRight) - caretSize;
      } else {
        x2 = this.caretX;
      }
      if (yAlign === "top") {
        y1 = ptY;
        y2 = y1 - caretSize;
        x1 = x2 - caretSize;
        x3 = x2 + caretSize;
      } else {
        y1 = ptY + height;
        y2 = y1 + caretSize;
        x1 = x2 + caretSize;
        x3 = x2 - caretSize;
      }
      y3 = y1;
    }
    return {
      x1,
      x2,
      x3,
      y1,
      y2,
      y3
    };
  }
  drawTitle(pt, ctx, options) {
    const title = this.title;
    const length = title.length;
    let titleFont, titleSpacing, i;
    if (length) {
      const rtlHelper = getRtlAdapter(options.rtl, this.x, this.width);
      pt.x = getAlignedX(this, options.titleAlign, options);
      ctx.textAlign = rtlHelper.textAlign(options.titleAlign);
      ctx.textBaseline = "middle";
      titleFont = toFont(options.titleFont);
      titleSpacing = options.titleSpacing;
      ctx.fillStyle = options.titleColor;
      ctx.font = titleFont.string;
      for (i = 0; i < length; ++i) {
        ctx.fillText(title[i], rtlHelper.x(pt.x), pt.y + titleFont.lineHeight / 2);
        pt.y += titleFont.lineHeight + titleSpacing;
        if (i + 1 === length) {
          pt.y += options.titleMarginBottom - titleSpacing;
        }
      }
    }
  }
  _drawColorBox(ctx, pt, i, rtlHelper, options) {
    const labelColors = this.labelColors[i];
    const labelPointStyle = this.labelPointStyles[i];
    const { boxHeight, boxWidth, boxPadding } = options;
    const bodyFont = toFont(options.bodyFont);
    const colorX = getAlignedX(this, "left", options);
    const rtlColorX = rtlHelper.x(colorX);
    const yOffSet = boxHeight < bodyFont.lineHeight ? (bodyFont.lineHeight - boxHeight) / 2 : 0;
    const colorY = pt.y + yOffSet;
    if (options.usePointStyle) {
      const drawOptions = {
        radius: Math.min(boxWidth, boxHeight) / 2,
        pointStyle: labelPointStyle.pointStyle,
        rotation: labelPointStyle.rotation,
        borderWidth: 1
      };
      const centerX = rtlHelper.leftForLtr(rtlColorX, boxWidth) + boxWidth / 2;
      const centerY = colorY + boxHeight / 2;
      ctx.strokeStyle = options.multiKeyBackground;
      ctx.fillStyle = options.multiKeyBackground;
      drawPoint(ctx, drawOptions, centerX, centerY);
      ctx.strokeStyle = labelColors.borderColor;
      ctx.fillStyle = labelColors.backgroundColor;
      drawPoint(ctx, drawOptions, centerX, centerY);
    } else {
      ctx.lineWidth = isObject(labelColors.borderWidth) ? Math.max(...Object.values(labelColors.borderWidth)) : labelColors.borderWidth || 1;
      ctx.strokeStyle = labelColors.borderColor;
      ctx.setLineDash(labelColors.borderDash || []);
      ctx.lineDashOffset = labelColors.borderDashOffset || 0;
      const outerX = rtlHelper.leftForLtr(rtlColorX, boxWidth - boxPadding);
      const innerX = rtlHelper.leftForLtr(rtlHelper.xPlus(rtlColorX, 1), boxWidth - boxPadding - 2);
      const borderRadius = toTRBLCorners(labelColors.borderRadius);
      if (Object.values(borderRadius).some((v) => v !== 0)) {
        ctx.beginPath();
        ctx.fillStyle = options.multiKeyBackground;
        addRoundedRectPath(ctx, {
          x: outerX,
          y: colorY,
          w: boxWidth,
          h: boxHeight,
          radius: borderRadius
        });
        ctx.fill();
        ctx.stroke();
        ctx.fillStyle = labelColors.backgroundColor;
        ctx.beginPath();
        addRoundedRectPath(ctx, {
          x: innerX,
          y: colorY + 1,
          w: boxWidth - 2,
          h: boxHeight - 2,
          radius: borderRadius
        });
        ctx.fill();
      } else {
        ctx.fillStyle = options.multiKeyBackground;
        ctx.fillRect(outerX, colorY, boxWidth, boxHeight);
        ctx.strokeRect(outerX, colorY, boxWidth, boxHeight);
        ctx.fillStyle = labelColors.backgroundColor;
        ctx.fillRect(innerX, colorY + 1, boxWidth - 2, boxHeight - 2);
      }
    }
    ctx.fillStyle = this.labelTextColors[i];
  }
  drawBody(pt, ctx, options) {
    const { body } = this;
    const { bodySpacing, bodyAlign, displayColors, boxHeight, boxWidth, boxPadding } = options;
    const bodyFont = toFont(options.bodyFont);
    let bodyLineHeight = bodyFont.lineHeight;
    let xLinePadding = 0;
    const rtlHelper = getRtlAdapter(options.rtl, this.x, this.width);
    const fillLineOfText = function(line) {
      ctx.fillText(line, rtlHelper.x(pt.x + xLinePadding), pt.y + bodyLineHeight / 2);
      pt.y += bodyLineHeight + bodySpacing;
    };
    const bodyAlignForCalculation = rtlHelper.textAlign(bodyAlign);
    let bodyItem, textColor, lines, i, j, ilen, jlen;
    ctx.textAlign = bodyAlign;
    ctx.textBaseline = "middle";
    ctx.font = bodyFont.string;
    pt.x = getAlignedX(this, bodyAlignForCalculation, options);
    ctx.fillStyle = options.bodyColor;
    each(this.beforeBody, fillLineOfText);
    xLinePadding = displayColors && bodyAlignForCalculation !== "right" ? bodyAlign === "center" ? boxWidth / 2 + boxPadding : boxWidth + 2 + boxPadding : 0;
    for (i = 0, ilen = body.length; i < ilen; ++i) {
      bodyItem = body[i];
      textColor = this.labelTextColors[i];
      ctx.fillStyle = textColor;
      each(bodyItem.before, fillLineOfText);
      lines = bodyItem.lines;
      if (displayColors && lines.length) {
        this._drawColorBox(ctx, pt, i, rtlHelper, options);
        bodyLineHeight = Math.max(bodyFont.lineHeight, boxHeight);
      }
      for (j = 0, jlen = lines.length; j < jlen; ++j) {
        fillLineOfText(lines[j]);
        bodyLineHeight = bodyFont.lineHeight;
      }
      each(bodyItem.after, fillLineOfText);
    }
    xLinePadding = 0;
    bodyLineHeight = bodyFont.lineHeight;
    each(this.afterBody, fillLineOfText);
    pt.y -= bodySpacing;
  }
  drawFooter(pt, ctx, options) {
    const footer = this.footer;
    const length = footer.length;
    let footerFont, i;
    if (length) {
      const rtlHelper = getRtlAdapter(options.rtl, this.x, this.width);
      pt.x = getAlignedX(this, options.footerAlign, options);
      pt.y += options.footerMarginTop;
      ctx.textAlign = rtlHelper.textAlign(options.footerAlign);
      ctx.textBaseline = "middle";
      footerFont = toFont(options.footerFont);
      ctx.fillStyle = options.footerColor;
      ctx.font = footerFont.string;
      for (i = 0; i < length; ++i) {
        ctx.fillText(footer[i], rtlHelper.x(pt.x), pt.y + footerFont.lineHeight / 2);
        pt.y += footerFont.lineHeight + options.footerSpacing;
      }
    }
  }
  drawBackground(pt, ctx, tooltipSize, options) {
    const { xAlign, yAlign } = this;
    const { x, y } = pt;
    const { width, height } = tooltipSize;
    const { topLeft, topRight, bottomLeft, bottomRight } = toTRBLCorners(options.cornerRadius);
    ctx.fillStyle = options.backgroundColor;
    ctx.strokeStyle = options.borderColor;
    ctx.lineWidth = options.borderWidth;
    ctx.beginPath();
    ctx.moveTo(x + topLeft, y);
    if (yAlign === "top") {
      this.drawCaret(pt, ctx, tooltipSize, options);
    }
    ctx.lineTo(x + width - topRight, y);
    ctx.quadraticCurveTo(x + width, y, x + width, y + topRight);
    if (yAlign === "center" && xAlign === "right") {
      this.drawCaret(pt, ctx, tooltipSize, options);
    }
    ctx.lineTo(x + width, y + height - bottomRight);
    ctx.quadraticCurveTo(x + width, y + height, x + width - bottomRight, y + height);
    if (yAlign === "bottom") {
      this.drawCaret(pt, ctx, tooltipSize, options);
    }
    ctx.lineTo(x + bottomLeft, y + height);
    ctx.quadraticCurveTo(x, y + height, x, y + height - bottomLeft);
    if (yAlign === "center" && xAlign === "left") {
      this.drawCaret(pt, ctx, tooltipSize, options);
    }
    ctx.lineTo(x, y + topLeft);
    ctx.quadraticCurveTo(x, y, x + topLeft, y);
    ctx.closePath();
    ctx.fill();
    if (options.borderWidth > 0) {
      ctx.stroke();
    }
  }
  _updateAnimationTarget(options) {
    const chart = this.chart;
    const anims = this.$animations;
    const animX = anims && anims.x;
    const animY = anims && anims.y;
    if (animX || animY) {
      const position = positioners[options.position].call(this, this._active, this._eventPosition);
      if (!position) {
        return;
      }
      const size = this._size = getTooltipSize(this, options);
      const positionAndSize = Object.assign({}, position, this._size);
      const alignment = determineAlignment(chart, options, positionAndSize);
      const point = getBackgroundPoint(options, positionAndSize, alignment, chart);
      if (animX._to !== point.x || animY._to !== point.y) {
        this.xAlign = alignment.xAlign;
        this.yAlign = alignment.yAlign;
        this.width = size.width;
        this.height = size.height;
        this.caretX = position.x;
        this.caretY = position.y;
        this._resolveAnimations().update(this, point);
      }
    }
  }
  _willRender() {
    return !!this.opacity;
  }
  draw(ctx) {
    const options = this.options.setContext(this.getContext());
    let opacity = this.opacity;
    if (!opacity) {
      return;
    }
    this._updateAnimationTarget(options);
    const tooltipSize = {
      width: this.width,
      height: this.height
    };
    const pt = {
      x: this.x,
      y: this.y
    };
    opacity = Math.abs(opacity) < 1e-3 ? 0 : opacity;
    const padding = toPadding(options.padding);
    const hasTooltipContent = this.title.length || this.beforeBody.length || this.body.length || this.afterBody.length || this.footer.length;
    if (options.enabled && hasTooltipContent) {
      ctx.save();
      ctx.globalAlpha = opacity;
      this.drawBackground(pt, ctx, tooltipSize, options);
      overrideTextDirection(ctx, options.textDirection);
      pt.y += padding.top;
      this.drawTitle(pt, ctx, options);
      this.drawBody(pt, ctx, options);
      this.drawFooter(pt, ctx, options);
      restoreTextDirection(ctx, options.textDirection);
      ctx.restore();
    }
  }
  getActiveElements() {
    return this._active || [];
  }
  setActiveElements(activeElements, eventPosition) {
    const lastActive = this._active;
    const active = activeElements.map(({ datasetIndex, index: index2 }) => {
      const meta = this.chart.getDatasetMeta(datasetIndex);
      if (!meta) {
        throw new Error("Cannot find a dataset at index " + datasetIndex);
      }
      return {
        datasetIndex,
        element: meta.data[index2],
        index: index2
      };
    });
    const changed = !_elementsEqual(lastActive, active);
    const positionChanged = this._positionChanged(active, eventPosition);
    if (changed || positionChanged) {
      this._active = active;
      this._eventPosition = eventPosition;
      this._ignoreReplayEvents = true;
      this.update(true);
    }
  }
  handleEvent(e, replay, inChartArea = true) {
    if (replay && this._ignoreReplayEvents) {
      return false;
    }
    this._ignoreReplayEvents = false;
    const options = this.options;
    const lastActive = this._active || [];
    const active = this._getActiveElements(e, lastActive, replay, inChartArea);
    const positionChanged = this._positionChanged(active, e);
    const changed = replay || !_elementsEqual(active, lastActive) || positionChanged;
    if (changed) {
      this._active = active;
      if (options.enabled || options.external) {
        this._eventPosition = {
          x: e.x,
          y: e.y
        };
        this.update(true, replay);
      }
    }
    return changed;
  }
  _getActiveElements(e, lastActive, replay, inChartArea) {
    const options = this.options;
    if (e.type === "mouseout") {
      return [];
    }
    if (!inChartArea) {
      return lastActive;
    }
    const active = this.chart.getElementsAtEventForMode(e, options.mode, options, replay);
    if (options.reverse) {
      active.reverse();
    }
    return active;
  }
  _positionChanged(active, e) {
    const { caretX, caretY, options } = this;
    const position = positioners[options.position].call(this, active, e);
    return position !== false && (caretX !== position.x || caretY !== position.y);
  }
}
__publicField(Tooltip, "positioners", positioners);
var plugin_tooltip = {
  id: "tooltip",
  _element: Tooltip,
  positioners,
  afterInit(chart, _args, options) {
    if (options) {
      chart.tooltip = new Tooltip({
        chart,
        options
      });
    }
  },
  beforeUpdate(chart, _args, options) {
    if (chart.tooltip) {
      chart.tooltip.initialize(options);
    }
  },
  reset(chart, _args, options) {
    if (chart.tooltip) {
      chart.tooltip.initialize(options);
    }
  },
  afterDraw(chart) {
    const tooltip = chart.tooltip;
    if (tooltip && tooltip._willRender()) {
      const args = {
        tooltip
      };
      if (chart.notifyPlugins("beforeTooltipDraw", {
        ...args,
        cancelable: true
      }) === false) {
        return;
      }
      tooltip.draw(chart.ctx);
      chart.notifyPlugins("afterTooltipDraw", args);
    }
  },
  afterEvent(chart, args) {
    if (chart.tooltip) {
      const useFinalPosition = args.replay;
      if (chart.tooltip.handleEvent(args.event, useFinalPosition, args.inChartArea)) {
        args.changed = true;
      }
    }
  },
  defaults: {
    enabled: true,
    external: null,
    position: "average",
    backgroundColor: "rgba(0,0,0,0.8)",
    titleColor: "#fff",
    titleFont: {
      weight: "bold"
    },
    titleSpacing: 2,
    titleMarginBottom: 6,
    titleAlign: "left",
    bodyColor: "#fff",
    bodySpacing: 2,
    bodyFont: {},
    bodyAlign: "left",
    footerColor: "#fff",
    footerSpacing: 2,
    footerMarginTop: 6,
    footerFont: {
      weight: "bold"
    },
    footerAlign: "left",
    padding: 6,
    caretPadding: 2,
    caretSize: 5,
    cornerRadius: 6,
    boxHeight: (ctx, opts) => opts.bodyFont.size,
    boxWidth: (ctx, opts) => opts.bodyFont.size,
    multiKeyBackground: "#fff",
    displayColors: true,
    boxPadding: 0,
    borderColor: "rgba(0,0,0,0)",
    borderWidth: 0,
    animation: {
      duration: 400,
      easing: "easeOutQuart"
    },
    animations: {
      numbers: {
        type: "number",
        properties: [
          "x",
          "y",
          "width",
          "height",
          "caretX",
          "caretY"
        ]
      },
      opacity: {
        easing: "linear",
        duration: 200
      }
    },
    callbacks: defaultCallbacks
  },
  defaultRoutes: {
    bodyFont: "font",
    footerFont: "font",
    titleFont: "font"
  },
  descriptors: {
    _scriptable: (name2) => name2 !== "filter" && name2 !== "itemSort" && name2 !== "external",
    _indexable: false,
    callbacks: {
      _scriptable: false,
      _indexable: false
    },
    animation: {
      _fallback: false
    },
    animations: {
      _fallback: "animation"
    }
  },
  additionalOptionScopes: [
    "interaction"
  ]
};
var plugins = /* @__PURE__ */ Object.freeze({
  __proto__: null,
  Colors: plugin_colors,
  Decimation: plugin_decimation,
  Filler: index,
  Legend: plugin_legend,
  SubTitle: plugin_subtitle,
  Title: plugin_title,
  Tooltip: plugin_tooltip
});
const addIfString = (labels, raw, index2, addedLabels) => {
  if (typeof raw === "string") {
    index2 = labels.push(raw) - 1;
    addedLabels.unshift({
      index: index2,
      label: raw
    });
  } else if (isNaN(raw)) {
    index2 = null;
  }
  return index2;
};
function findOrAddLabel(labels, raw, index2, addedLabels) {
  const first = labels.indexOf(raw);
  if (first === -1) {
    return addIfString(labels, raw, index2, addedLabels);
  }
  const last = labels.lastIndexOf(raw);
  return first !== last ? index2 : first;
}
const validIndex = (index2, max) => index2 === null ? null : _limitValue(Math.round(index2), 0, max);
function _getLabelForValue(value) {
  const labels = this.getLabels();
  if (value >= 0 && value < labels.length) {
    return labels[value];
  }
  return value;
}
class CategoryScale extends Scale {
  constructor(cfg) {
    super(cfg);
    this._startValue = void 0;
    this._valueRange = 0;
    this._addedLabels = [];
  }
  init(scaleOptions) {
    const added = this._addedLabels;
    if (added.length) {
      const labels = this.getLabels();
      for (const { index: index2, label } of added) {
        if (labels[index2] === label) {
          labels.splice(index2, 1);
        }
      }
      this._addedLabels = [];
    }
    super.init(scaleOptions);
  }
  parse(raw, index2) {
    if (isNullOrUndef(raw)) {
      return null;
    }
    const labels = this.getLabels();
    index2 = isFinite(index2) && labels[index2] === raw ? index2 : findOrAddLabel(labels, raw, valueOrDefault(index2, raw), this._addedLabels);
    return validIndex(index2, labels.length - 1);
  }
  determineDataLimits() {
    const { minDefined, maxDefined } = this.getUserBounds();
    let { min, max } = this.getMinMax(true);
    if (this.options.bounds === "ticks") {
      if (!minDefined) {
        min = 0;
      }
      if (!maxDefined) {
        max = this.getLabels().length - 1;
      }
    }
    this.min = min;
    this.max = max;
  }
  buildTicks() {
    const min = this.min;
    const max = this.max;
    const offset = this.options.offset;
    const ticks = [];
    let labels = this.getLabels();
    labels = min === 0 && max === labels.length - 1 ? labels : labels.slice(min, max + 1);
    this._valueRange = Math.max(labels.length - (offset ? 0 : 1), 1);
    this._startValue = this.min - (offset ? 0.5 : 0);
    for (let value = min; value <= max; value++) {
      ticks.push({
        value
      });
    }
    return ticks;
  }
  getLabelForValue(value) {
    return _getLabelForValue.call(this, value);
  }
  configure() {
    super.configure();
    if (!this.isHorizontal()) {
      this._reversePixels = !this._reversePixels;
    }
  }
  getPixelForValue(value) {
    if (typeof value !== "number") {
      value = this.parse(value);
    }
    return value === null ? NaN : this.getPixelForDecimal((value - this._startValue) / this._valueRange);
  }
  getPixelForTick(index2) {
    const ticks = this.ticks;
    if (index2 < 0 || index2 > ticks.length - 1) {
      return null;
    }
    return this.getPixelForValue(ticks[index2].value);
  }
  getValueForPixel(pixel) {
    return Math.round(this._startValue + this.getDecimalForPixel(pixel) * this._valueRange);
  }
  getBasePixel() {
    return this.bottom;
  }
}
__publicField(CategoryScale, "id", "category");
__publicField(CategoryScale, "defaults", {
  ticks: {
    callback: _getLabelForValue
  }
});
function generateTicks$1(generationOptions, dataRange) {
  const ticks = [];
  const MIN_SPACING = 1e-14;
  const { bounds, step, min, max, precision, count, maxTicks, maxDigits, includeBounds } = generationOptions;
  const unit = step || 1;
  const maxSpaces = maxTicks - 1;
  const { min: rmin, max: rmax } = dataRange;
  const minDefined = !isNullOrUndef(min);
  const maxDefined = !isNullOrUndef(max);
  const countDefined = !isNullOrUndef(count);
  const minSpacing = (rmax - rmin) / (maxDigits + 1);
  let spacing = niceNum((rmax - rmin) / maxSpaces / unit) * unit;
  let factor, niceMin, niceMax, numSpaces;
  if (spacing < MIN_SPACING && !minDefined && !maxDefined) {
    return [
      {
        value: rmin
      },
      {
        value: rmax
      }
    ];
  }
  numSpaces = Math.ceil(rmax / spacing) - Math.floor(rmin / spacing);
  if (numSpaces > maxSpaces) {
    spacing = niceNum(numSpaces * spacing / maxSpaces / unit) * unit;
  }
  if (!isNullOrUndef(precision)) {
    factor = Math.pow(10, precision);
    spacing = Math.ceil(spacing * factor) / factor;
  }
  if (bounds === "ticks") {
    niceMin = Math.floor(rmin / spacing) * spacing;
    niceMax = Math.ceil(rmax / spacing) * spacing;
  } else {
    niceMin = rmin;
    niceMax = rmax;
  }
  if (minDefined && maxDefined && step && almostWhole((max - min) / step, spacing / 1e3)) {
    numSpaces = Math.round(Math.min((max - min) / spacing, maxTicks));
    spacing = (max - min) / numSpaces;
    niceMin = min;
    niceMax = max;
  } else if (countDefined) {
    niceMin = minDefined ? min : niceMin;
    niceMax = maxDefined ? max : niceMax;
    numSpaces = count - 1;
    spacing = (niceMax - niceMin) / numSpaces;
  } else {
    numSpaces = (niceMax - niceMin) / spacing;
    if (almostEquals(numSpaces, Math.round(numSpaces), spacing / 1e3)) {
      numSpaces = Math.round(numSpaces);
    } else {
      numSpaces = Math.ceil(numSpaces);
    }
  }
  const decimalPlaces = Math.max(_decimalPlaces(spacing), _decimalPlaces(niceMin));
  factor = Math.pow(10, isNullOrUndef(precision) ? decimalPlaces : precision);
  niceMin = Math.round(niceMin * factor) / factor;
  niceMax = Math.round(niceMax * factor) / factor;
  let j = 0;
  if (minDefined) {
    if (includeBounds && niceMin !== min) {
      ticks.push({
        value: min
      });
      if (niceMin < min) {
        j++;
      }
      if (almostEquals(Math.round((niceMin + j * spacing) * factor) / factor, min, relativeLabelSize(min, minSpacing, generationOptions))) {
        j++;
      }
    } else if (niceMin < min) {
      j++;
    }
  }
  for (; j < numSpaces; ++j) {
    ticks.push({
      value: Math.round((niceMin + j * spacing) * factor) / factor
    });
  }
  if (maxDefined && includeBounds && niceMax !== max) {
    if (ticks.length && almostEquals(ticks[ticks.length - 1].value, max, relativeLabelSize(max, minSpacing, generationOptions))) {
      ticks[ticks.length - 1].value = max;
    } else {
      ticks.push({
        value: max
      });
    }
  } else if (!maxDefined || niceMax === max) {
    ticks.push({
      value: niceMax
    });
  }
  return ticks;
}
function relativeLabelSize(value, minSpacing, { horizontal, minRotation }) {
  const rad = toRadians(minRotation);
  const ratio = (horizontal ? Math.sin(rad) : Math.cos(rad)) || 1e-3;
  const length = 0.75 * minSpacing * ("" + value).length;
  return Math.min(minSpacing / ratio, length);
}
class LinearScaleBase extends Scale {
  constructor(cfg) {
    super(cfg);
    this.start = void 0;
    this.end = void 0;
    this._startValue = void 0;
    this._endValue = void 0;
    this._valueRange = 0;
  }
  parse(raw, index2) {
    if (isNullOrUndef(raw)) {
      return null;
    }
    if ((typeof raw === "number" || raw instanceof Number) && !isFinite(+raw)) {
      return null;
    }
    return +raw;
  }
  handleTickRangeOptions() {
    const { beginAtZero } = this.options;
    const { minDefined, maxDefined } = this.getUserBounds();
    let { min, max } = this;
    const setMin = (v) => min = minDefined ? min : v;
    const setMax = (v) => max = maxDefined ? max : v;
    if (beginAtZero) {
      const minSign = sign(min);
      const maxSign = sign(max);
      if (minSign < 0 && maxSign < 0) {
        setMax(0);
      } else if (minSign > 0 && maxSign > 0) {
        setMin(0);
      }
    }
    if (min === max) {
      let offset = max === 0 ? 1 : Math.abs(max * 0.05);
      setMax(max + offset);
      if (!beginAtZero) {
        setMin(min - offset);
      }
    }
    this.min = min;
    this.max = max;
  }
  getTickLimit() {
    const tickOpts = this.options.ticks;
    let { maxTicksLimit, stepSize } = tickOpts;
    let maxTicks;
    if (stepSize) {
      maxTicks = Math.ceil(this.max / stepSize) - Math.floor(this.min / stepSize) + 1;
      if (maxTicks > 1e3) {
        console.warn(`scales.${this.id}.ticks.stepSize: ${stepSize} would result generating up to ${maxTicks} ticks. Limiting to 1000.`);
        maxTicks = 1e3;
      }
    } else {
      maxTicks = this.computeTickLimit();
      maxTicksLimit = maxTicksLimit || 11;
    }
    if (maxTicksLimit) {
      maxTicks = Math.min(maxTicksLimit, maxTicks);
    }
    return maxTicks;
  }
  computeTickLimit() {
    return Number.POSITIVE_INFINITY;
  }
  buildTicks() {
    const opts = this.options;
    const tickOpts = opts.ticks;
    let maxTicks = this.getTickLimit();
    maxTicks = Math.max(2, maxTicks);
    const numericGeneratorOptions = {
      maxTicks,
      bounds: opts.bounds,
      min: opts.min,
      max: opts.max,
      precision: tickOpts.precision,
      step: tickOpts.stepSize,
      count: tickOpts.count,
      maxDigits: this._maxDigits(),
      horizontal: this.isHorizontal(),
      minRotation: tickOpts.minRotation || 0,
      includeBounds: tickOpts.includeBounds !== false
    };
    const dataRange = this._range || this;
    const ticks = generateTicks$1(numericGeneratorOptions, dataRange);
    if (opts.bounds === "ticks") {
      _setMinAndMaxByKey(ticks, this, "value");
    }
    if (opts.reverse) {
      ticks.reverse();
      this.start = this.max;
      this.end = this.min;
    } else {
      this.start = this.min;
      this.end = this.max;
    }
    return ticks;
  }
  configure() {
    const ticks = this.ticks;
    let start = this.min;
    let end = this.max;
    super.configure();
    if (this.options.offset && ticks.length) {
      const offset = (end - start) / Math.max(ticks.length - 1, 1) / 2;
      start -= offset;
      end += offset;
    }
    this._startValue = start;
    this._endValue = end;
    this._valueRange = end - start;
  }
  getLabelForValue(value) {
    return formatNumber(value, this.chart.options.locale, this.options.ticks.format);
  }
}
class LinearScale extends LinearScaleBase {
  determineDataLimits() {
    const { min, max } = this.getMinMax(true);
    this.min = isNumberFinite(min) ? min : 0;
    this.max = isNumberFinite(max) ? max : 1;
    this.handleTickRangeOptions();
  }
  computeTickLimit() {
    const horizontal = this.isHorizontal();
    const length = horizontal ? this.width : this.height;
    const minRotation = toRadians(this.options.ticks.minRotation);
    const ratio = (horizontal ? Math.sin(minRotation) : Math.cos(minRotation)) || 1e-3;
    const tickFont = this._resolveTickFontOptions(0);
    return Math.ceil(length / Math.min(40, tickFont.lineHeight / ratio));
  }
  getPixelForValue(value) {
    return value === null ? NaN : this.getPixelForDecimal((value - this._startValue) / this._valueRange);
  }
  getValueForPixel(pixel) {
    return this._startValue + this.getDecimalForPixel(pixel) * this._valueRange;
  }
}
__publicField(LinearScale, "id", "linear");
__publicField(LinearScale, "defaults", {
  ticks: {
    callback: Ticks.formatters.numeric
  }
});
const log10Floor = (v) => Math.floor(log10(v));
const changeExponent = (v, m) => Math.pow(10, log10Floor(v) + m);
function isMajor(tickVal) {
  const remain = tickVal / Math.pow(10, log10Floor(tickVal));
  return remain === 1;
}
function steps(min, max, rangeExp) {
  const rangeStep = Math.pow(10, rangeExp);
  const start = Math.floor(min / rangeStep);
  const end = Math.ceil(max / rangeStep);
  return end - start;
}
function startExp(min, max) {
  const range = max - min;
  let rangeExp = log10Floor(range);
  while (steps(min, max, rangeExp) > 10) {
    rangeExp++;
  }
  while (steps(min, max, rangeExp) < 10) {
    rangeExp--;
  }
  return Math.min(rangeExp, log10Floor(min));
}
function generateTicks(generationOptions, { min, max }) {
  min = finiteOrDefault(generationOptions.min, min);
  const ticks = [];
  const minExp = log10Floor(min);
  let exp = startExp(min, max);
  let precision = exp < 0 ? Math.pow(10, Math.abs(exp)) : 1;
  const stepSize = Math.pow(10, exp);
  const base = minExp > exp ? Math.pow(10, minExp) : 0;
  const start = Math.round((min - base) * precision) / precision;
  const offset = Math.floor((min - base) / stepSize / 10) * stepSize * 10;
  let significand = Math.floor((start - offset) / Math.pow(10, exp));
  let value = finiteOrDefault(generationOptions.min, Math.round((base + offset + significand * Math.pow(10, exp)) * precision) / precision);
  while (value < max) {
    ticks.push({
      value,
      major: isMajor(value),
      significand
    });
    if (significand >= 10) {
      significand = significand < 15 ? 15 : 20;
    } else {
      significand++;
    }
    if (significand >= 20) {
      exp++;
      significand = 2;
      precision = exp >= 0 ? 1 : precision;
    }
    value = Math.round((base + offset + significand * Math.pow(10, exp)) * precision) / precision;
  }
  const lastTick = finiteOrDefault(generationOptions.max, value);
  ticks.push({
    value: lastTick,
    major: isMajor(lastTick),
    significand
  });
  return ticks;
}
class LogarithmicScale extends Scale {
  constructor(cfg) {
    super(cfg);
    this.start = void 0;
    this.end = void 0;
    this._startValue = void 0;
    this._valueRange = 0;
  }
  parse(raw, index2) {
    const value = LinearScaleBase.prototype.parse.apply(this, [
      raw,
      index2
    ]);
    if (value === 0) {
      this._zero = true;
      return void 0;
    }
    return isNumberFinite(value) && value > 0 ? value : null;
  }
  determineDataLimits() {
    const { min, max } = this.getMinMax(true);
    this.min = isNumberFinite(min) ? Math.max(0, min) : null;
    this.max = isNumberFinite(max) ? Math.max(0, max) : null;
    if (this.options.beginAtZero) {
      this._zero = true;
    }
    if (this._zero && this.min !== this._suggestedMin && !isNumberFinite(this._userMin)) {
      this.min = min === changeExponent(this.min, 0) ? changeExponent(this.min, -1) : changeExponent(this.min, 0);
    }
    this.handleTickRangeOptions();
  }
  handleTickRangeOptions() {
    const { minDefined, maxDefined } = this.getUserBounds();
    let min = this.min;
    let max = this.max;
    const setMin = (v) => min = minDefined ? min : v;
    const setMax = (v) => max = maxDefined ? max : v;
    if (min === max) {
      if (min <= 0) {
        setMin(1);
        setMax(10);
      } else {
        setMin(changeExponent(min, -1));
        setMax(changeExponent(max, 1));
      }
    }
    if (min <= 0) {
      setMin(changeExponent(max, -1));
    }
    if (max <= 0) {
      setMax(changeExponent(min, 1));
    }
    this.min = min;
    this.max = max;
  }
  buildTicks() {
    const opts = this.options;
    const generationOptions = {
      min: this._userMin,
      max: this._userMax
    };
    const ticks = generateTicks(generationOptions, this);
    if (opts.bounds === "ticks") {
      _setMinAndMaxByKey(ticks, this, "value");
    }
    if (opts.reverse) {
      ticks.reverse();
      this.start = this.max;
      this.end = this.min;
    } else {
      this.start = this.min;
      this.end = this.max;
    }
    return ticks;
  }
  getLabelForValue(value) {
    return value === void 0 ? "0" : formatNumber(value, this.chart.options.locale, this.options.ticks.format);
  }
  configure() {
    const start = this.min;
    super.configure();
    this._startValue = log10(start);
    this._valueRange = log10(this.max) - log10(start);
  }
  getPixelForValue(value) {
    if (value === void 0 || value === 0) {
      value = this.min;
    }
    if (value === null || isNaN(value)) {
      return NaN;
    }
    return this.getPixelForDecimal(value === this.min ? 0 : (log10(value) - this._startValue) / this._valueRange);
  }
  getValueForPixel(pixel) {
    const decimal = this.getDecimalForPixel(pixel);
    return Math.pow(10, this._startValue + decimal * this._valueRange);
  }
}
__publicField(LogarithmicScale, "id", "logarithmic");
__publicField(LogarithmicScale, "defaults", {
  ticks: {
    callback: Ticks.formatters.logarithmic,
    major: {
      enabled: true
    }
  }
});
function getTickBackdropHeight(opts) {
  const tickOpts = opts.ticks;
  if (tickOpts.display && opts.display) {
    const padding = toPadding(tickOpts.backdropPadding);
    return valueOrDefault(tickOpts.font && tickOpts.font.size, defaults.font.size) + padding.height;
  }
  return 0;
}
function measureLabelSize(ctx, font, label) {
  label = isArray(label) ? label : [
    label
  ];
  return {
    w: _longestText(ctx, font.string, label),
    h: label.length * font.lineHeight
  };
}
function determineLimits(angle, pos, size, min, max) {
  if (angle === min || angle === max) {
    return {
      start: pos - size / 2,
      end: pos + size / 2
    };
  } else if (angle < min || angle > max) {
    return {
      start: pos - size,
      end: pos
    };
  }
  return {
    start: pos,
    end: pos + size
  };
}
function fitWithPointLabels(scale) {
  const orig = {
    l: scale.left + scale._padding.left,
    r: scale.right - scale._padding.right,
    t: scale.top + scale._padding.top,
    b: scale.bottom - scale._padding.bottom
  };
  const limits = Object.assign({}, orig);
  const labelSizes = [];
  const padding = [];
  const valueCount = scale._pointLabels.length;
  const pointLabelOpts = scale.options.pointLabels;
  const additionalAngle = pointLabelOpts.centerPointLabels ? PI / valueCount : 0;
  for (let i = 0; i < valueCount; i++) {
    const opts = pointLabelOpts.setContext(scale.getPointLabelContext(i));
    padding[i] = opts.padding;
    const pointPosition = scale.getPointPosition(i, scale.drawingArea + padding[i], additionalAngle);
    const plFont = toFont(opts.font);
    const textSize = measureLabelSize(scale.ctx, plFont, scale._pointLabels[i]);
    labelSizes[i] = textSize;
    const angleRadians = _normalizeAngle(scale.getIndexAngle(i) + additionalAngle);
    const angle = Math.round(toDegrees(angleRadians));
    const hLimits = determineLimits(angle, pointPosition.x, textSize.w, 0, 180);
    const vLimits = determineLimits(angle, pointPosition.y, textSize.h, 90, 270);
    updateLimits(limits, orig, angleRadians, hLimits, vLimits);
  }
  scale.setCenterPoint(orig.l - limits.l, limits.r - orig.r, orig.t - limits.t, limits.b - orig.b);
  scale._pointLabelItems = buildPointLabelItems(scale, labelSizes, padding);
}
function updateLimits(limits, orig, angle, hLimits, vLimits) {
  const sin = Math.abs(Math.sin(angle));
  const cos = Math.abs(Math.cos(angle));
  let x = 0;
  let y = 0;
  if (hLimits.start < orig.l) {
    x = (orig.l - hLimits.start) / sin;
    limits.l = Math.min(limits.l, orig.l - x);
  } else if (hLimits.end > orig.r) {
    x = (hLimits.end - orig.r) / sin;
    limits.r = Math.max(limits.r, orig.r + x);
  }
  if (vLimits.start < orig.t) {
    y = (orig.t - vLimits.start) / cos;
    limits.t = Math.min(limits.t, orig.t - y);
  } else if (vLimits.end > orig.b) {
    y = (vLimits.end - orig.b) / cos;
    limits.b = Math.max(limits.b, orig.b + y);
  }
}
function buildPointLabelItems(scale, labelSizes, padding) {
  const items = [];
  const valueCount = scale._pointLabels.length;
  const opts = scale.options;
  const extra = getTickBackdropHeight(opts) / 2;
  const outerDistance = scale.drawingArea;
  const additionalAngle = opts.pointLabels.centerPointLabels ? PI / valueCount : 0;
  for (let i = 0; i < valueCount; i++) {
    const pointLabelPosition = scale.getPointPosition(i, outerDistance + extra + padding[i], additionalAngle);
    const angle = Math.round(toDegrees(_normalizeAngle(pointLabelPosition.angle + HALF_PI)));
    const size = labelSizes[i];
    const y = yForAngle(pointLabelPosition.y, size.h, angle);
    const textAlign = getTextAlignForAngle(angle);
    const left = leftForTextAlign(pointLabelPosition.x, size.w, textAlign);
    items.push({
      x: pointLabelPosition.x,
      y,
      textAlign,
      left,
      top: y,
      right: left + size.w,
      bottom: y + size.h
    });
  }
  return items;
}
function getTextAlignForAngle(angle) {
  if (angle === 0 || angle === 180) {
    return "center";
  } else if (angle < 180) {
    return "left";
  }
  return "right";
}
function leftForTextAlign(x, w, align) {
  if (align === "right") {
    x -= w;
  } else if (align === "center") {
    x -= w / 2;
  }
  return x;
}
function yForAngle(y, h, angle) {
  if (angle === 90 || angle === 270) {
    y -= h / 2;
  } else if (angle > 270 || angle < 90) {
    y -= h;
  }
  return y;
}
function drawPointLabels(scale, labelCount) {
  const { ctx, options: { pointLabels } } = scale;
  for (let i = labelCount - 1; i >= 0; i--) {
    const optsAtIndex = pointLabels.setContext(scale.getPointLabelContext(i));
    const plFont = toFont(optsAtIndex.font);
    const { x, y, textAlign, left, top, right, bottom } = scale._pointLabelItems[i];
    const { backdropColor } = optsAtIndex;
    if (!isNullOrUndef(backdropColor)) {
      const borderRadius = toTRBLCorners(optsAtIndex.borderRadius);
      const padding = toPadding(optsAtIndex.backdropPadding);
      ctx.fillStyle = backdropColor;
      const backdropLeft = left - padding.left;
      const backdropTop = top - padding.top;
      const backdropWidth = right - left + padding.width;
      const backdropHeight = bottom - top + padding.height;
      if (Object.values(borderRadius).some((v) => v !== 0)) {
        ctx.beginPath();
        addRoundedRectPath(ctx, {
          x: backdropLeft,
          y: backdropTop,
          w: backdropWidth,
          h: backdropHeight,
          radius: borderRadius
        });
        ctx.fill();
      } else {
        ctx.fillRect(backdropLeft, backdropTop, backdropWidth, backdropHeight);
      }
    }
    renderText(ctx, scale._pointLabels[i], x, y + plFont.lineHeight / 2, plFont, {
      color: optsAtIndex.color,
      textAlign,
      textBaseline: "middle"
    });
  }
}
function pathRadiusLine(scale, radius, circular, labelCount) {
  const { ctx } = scale;
  if (circular) {
    ctx.arc(scale.xCenter, scale.yCenter, radius, 0, TAU);
  } else {
    let pointPosition = scale.getPointPosition(0, radius);
    ctx.moveTo(pointPosition.x, pointPosition.y);
    for (let i = 1; i < labelCount; i++) {
      pointPosition = scale.getPointPosition(i, radius);
      ctx.lineTo(pointPosition.x, pointPosition.y);
    }
  }
}
function drawRadiusLine(scale, gridLineOpts, radius, labelCount, borderOpts) {
  const ctx = scale.ctx;
  const circular = gridLineOpts.circular;
  const { color: color2, lineWidth } = gridLineOpts;
  if (!circular && !labelCount || !color2 || !lineWidth || radius < 0) {
    return;
  }
  ctx.save();
  ctx.strokeStyle = color2;
  ctx.lineWidth = lineWidth;
  ctx.setLineDash(borderOpts.dash);
  ctx.lineDashOffset = borderOpts.dashOffset;
  ctx.beginPath();
  pathRadiusLine(scale, radius, circular, labelCount);
  ctx.closePath();
  ctx.stroke();
  ctx.restore();
}
function createPointLabelContext(parent, index2, label) {
  return createContext(parent, {
    label,
    index: index2,
    type: "pointLabel"
  });
}
class RadialLinearScale extends LinearScaleBase {
  constructor(cfg) {
    super(cfg);
    this.xCenter = void 0;
    this.yCenter = void 0;
    this.drawingArea = void 0;
    this._pointLabels = [];
    this._pointLabelItems = [];
  }
  setDimensions() {
    const padding = this._padding = toPadding(getTickBackdropHeight(this.options) / 2);
    const w = this.width = this.maxWidth - padding.width;
    const h = this.height = this.maxHeight - padding.height;
    this.xCenter = Math.floor(this.left + w / 2 + padding.left);
    this.yCenter = Math.floor(this.top + h / 2 + padding.top);
    this.drawingArea = Math.floor(Math.min(w, h) / 2);
  }
  determineDataLimits() {
    const { min, max } = this.getMinMax(false);
    this.min = isNumberFinite(min) && !isNaN(min) ? min : 0;
    this.max = isNumberFinite(max) && !isNaN(max) ? max : 0;
    this.handleTickRangeOptions();
  }
  computeTickLimit() {
    return Math.ceil(this.drawingArea / getTickBackdropHeight(this.options));
  }
  generateTickLabels(ticks) {
    LinearScaleBase.prototype.generateTickLabels.call(this, ticks);
    this._pointLabels = this.getLabels().map((value, index2) => {
      const label = callback(this.options.pointLabels.callback, [
        value,
        index2
      ], this);
      return label || label === 0 ? label : "";
    }).filter((v, i) => this.chart.getDataVisibility(i));
  }
  fit() {
    const opts = this.options;
    if (opts.display && opts.pointLabels.display) {
      fitWithPointLabels(this);
    } else {
      this.setCenterPoint(0, 0, 0, 0);
    }
  }
  setCenterPoint(leftMovement, rightMovement, topMovement, bottomMovement) {
    this.xCenter += Math.floor((leftMovement - rightMovement) / 2);
    this.yCenter += Math.floor((topMovement - bottomMovement) / 2);
    this.drawingArea -= Math.min(this.drawingArea / 2, Math.max(leftMovement, rightMovement, topMovement, bottomMovement));
  }
  getIndexAngle(index2) {
    const angleMultiplier = TAU / (this._pointLabels.length || 1);
    const startAngle = this.options.startAngle || 0;
    return _normalizeAngle(index2 * angleMultiplier + toRadians(startAngle));
  }
  getDistanceFromCenterForValue(value) {
    if (isNullOrUndef(value)) {
      return NaN;
    }
    const scalingFactor = this.drawingArea / (this.max - this.min);
    if (this.options.reverse) {
      return (this.max - value) * scalingFactor;
    }
    return (value - this.min) * scalingFactor;
  }
  getValueForDistanceFromCenter(distance) {
    if (isNullOrUndef(distance)) {
      return NaN;
    }
    const scaledDistance = distance / (this.drawingArea / (this.max - this.min));
    return this.options.reverse ? this.max - scaledDistance : this.min + scaledDistance;
  }
  getPointLabelContext(index2) {
    const pointLabels = this._pointLabels || [];
    if (index2 >= 0 && index2 < pointLabels.length) {
      const pointLabel = pointLabels[index2];
      return createPointLabelContext(this.getContext(), index2, pointLabel);
    }
  }
  getPointPosition(index2, distanceFromCenter, additionalAngle = 0) {
    const angle = this.getIndexAngle(index2) - HALF_PI + additionalAngle;
    return {
      x: Math.cos(angle) * distanceFromCenter + this.xCenter,
      y: Math.sin(angle) * distanceFromCenter + this.yCenter,
      angle
    };
  }
  getPointPositionForValue(index2, value) {
    return this.getPointPosition(index2, this.getDistanceFromCenterForValue(value));
  }
  getBasePosition(index2) {
    return this.getPointPositionForValue(index2 || 0, this.getBaseValue());
  }
  getPointLabelPosition(index2) {
    const { left, top, right, bottom } = this._pointLabelItems[index2];
    return {
      left,
      top,
      right,
      bottom
    };
  }
  drawBackground() {
    const { backgroundColor, grid: { circular } } = this.options;
    if (backgroundColor) {
      const ctx = this.ctx;
      ctx.save();
      ctx.beginPath();
      pathRadiusLine(this, this.getDistanceFromCenterForValue(this._endValue), circular, this._pointLabels.length);
      ctx.closePath();
      ctx.fillStyle = backgroundColor;
      ctx.fill();
      ctx.restore();
    }
  }
  drawGrid() {
    const ctx = this.ctx;
    const opts = this.options;
    const { angleLines, grid, border } = opts;
    const labelCount = this._pointLabels.length;
    let i, offset, position;
    if (opts.pointLabels.display) {
      drawPointLabels(this, labelCount);
    }
    if (grid.display) {
      this.ticks.forEach((tick, index2) => {
        if (index2 !== 0) {
          offset = this.getDistanceFromCenterForValue(tick.value);
          const context = this.getContext(index2);
          const optsAtIndex = grid.setContext(context);
          const optsAtIndexBorder = border.setContext(context);
          drawRadiusLine(this, optsAtIndex, offset, labelCount, optsAtIndexBorder);
        }
      });
    }
    if (angleLines.display) {
      ctx.save();
      for (i = labelCount - 1; i >= 0; i--) {
        const optsAtIndex = angleLines.setContext(this.getPointLabelContext(i));
        const { color: color2, lineWidth } = optsAtIndex;
        if (!lineWidth || !color2) {
          continue;
        }
        ctx.lineWidth = lineWidth;
        ctx.strokeStyle = color2;
        ctx.setLineDash(optsAtIndex.borderDash);
        ctx.lineDashOffset = optsAtIndex.borderDashOffset;
        offset = this.getDistanceFromCenterForValue(opts.ticks.reverse ? this.min : this.max);
        position = this.getPointPosition(i, offset);
        ctx.beginPath();
        ctx.moveTo(this.xCenter, this.yCenter);
        ctx.lineTo(position.x, position.y);
        ctx.stroke();
      }
      ctx.restore();
    }
  }
  drawBorder() {
  }
  drawLabels() {
    const ctx = this.ctx;
    const opts = this.options;
    const tickOpts = opts.ticks;
    if (!tickOpts.display) {
      return;
    }
    const startAngle = this.getIndexAngle(0);
    let offset, width;
    ctx.save();
    ctx.translate(this.xCenter, this.yCenter);
    ctx.rotate(startAngle);
    ctx.textAlign = "center";
    ctx.textBaseline = "middle";
    this.ticks.forEach((tick, index2) => {
      if (index2 === 0 && !opts.reverse) {
        return;
      }
      const optsAtIndex = tickOpts.setContext(this.getContext(index2));
      const tickFont = toFont(optsAtIndex.font);
      offset = this.getDistanceFromCenterForValue(this.ticks[index2].value);
      if (optsAtIndex.showLabelBackdrop) {
        ctx.font = tickFont.string;
        width = ctx.measureText(tick.label).width;
        ctx.fillStyle = optsAtIndex.backdropColor;
        const padding = toPadding(optsAtIndex.backdropPadding);
        ctx.fillRect(-width / 2 - padding.left, -offset - tickFont.size / 2 - padding.top, width + padding.width, tickFont.size + padding.height);
      }
      renderText(ctx, tick.label, 0, -offset, tickFont, {
        color: optsAtIndex.color
      });
    });
    ctx.restore();
  }
  drawTitle() {
  }
}
__publicField(RadialLinearScale, "id", "radialLinear");
__publicField(RadialLinearScale, "defaults", {
  display: true,
  animate: true,
  position: "chartArea",
  angleLines: {
    display: true,
    lineWidth: 1,
    borderDash: [],
    borderDashOffset: 0
  },
  grid: {
    circular: false
  },
  startAngle: 0,
  ticks: {
    showLabelBackdrop: true,
    callback: Ticks.formatters.numeric
  },
  pointLabels: {
    backdropColor: void 0,
    backdropPadding: 2,
    display: true,
    font: {
      size: 10
    },
    callback(label) {
      return label;
    },
    padding: 5,
    centerPointLabels: false
  }
});
__publicField(RadialLinearScale, "defaultRoutes", {
  "angleLines.color": "borderColor",
  "pointLabels.color": "color",
  "ticks.color": "color"
});
__publicField(RadialLinearScale, "descriptors", {
  angleLines: {
    _fallback: "grid"
  }
});
const INTERVALS = {
  millisecond: {
    common: true,
    size: 1,
    steps: 1e3
  },
  second: {
    common: true,
    size: 1e3,
    steps: 60
  },
  minute: {
    common: true,
    size: 6e4,
    steps: 60
  },
  hour: {
    common: true,
    size: 36e5,
    steps: 24
  },
  day: {
    common: true,
    size: 864e5,
    steps: 30
  },
  week: {
    common: false,
    size: 6048e5,
    steps: 4
  },
  month: {
    common: true,
    size: 2628e6,
    steps: 12
  },
  quarter: {
    common: false,
    size: 7884e6,
    steps: 4
  },
  year: {
    common: true,
    size: 3154e7
  }
};
const UNITS = /* @__PURE__ */ Object.keys(INTERVALS);
function sorter(a, b) {
  return a - b;
}
function parse(scale, input) {
  if (isNullOrUndef(input)) {
    return null;
  }
  const adapter = scale._adapter;
  const { parser, round: round2, isoWeekday } = scale._parseOpts;
  let value = input;
  if (typeof parser === "function") {
    value = parser(value);
  }
  if (!isNumberFinite(value)) {
    value = typeof parser === "string" ? adapter.parse(value, parser) : adapter.parse(value);
  }
  if (value === null) {
    return null;
  }
  if (round2) {
    value = round2 === "week" && (isNumber(isoWeekday) || isoWeekday === true) ? adapter.startOf(value, "isoWeek", isoWeekday) : adapter.startOf(value, round2);
  }
  return +value;
}
function determineUnitForAutoTicks(minUnit, min, max, capacity) {
  const ilen = UNITS.length;
  for (let i = UNITS.indexOf(minUnit); i < ilen - 1; ++i) {
    const interval = INTERVALS[UNITS[i]];
    const factor = interval.steps ? interval.steps : Number.MAX_SAFE_INTEGER;
    if (interval.common && Math.ceil((max - min) / (factor * interval.size)) <= capacity) {
      return UNITS[i];
    }
  }
  return UNITS[ilen - 1];
}
function determineUnitForFormatting(scale, numTicks, minUnit, min, max) {
  for (let i = UNITS.length - 1; i >= UNITS.indexOf(minUnit); i--) {
    const unit = UNITS[i];
    if (INTERVALS[unit].common && scale._adapter.diff(max, min, unit) >= numTicks - 1) {
      return unit;
    }
  }
  return UNITS[minUnit ? UNITS.indexOf(minUnit) : 0];
}
function determineMajorUnit(unit) {
  for (let i = UNITS.indexOf(unit) + 1, ilen = UNITS.length; i < ilen; ++i) {
    if (INTERVALS[UNITS[i]].common) {
      return UNITS[i];
    }
  }
}
function addTick(ticks, time, timestamps) {
  if (!timestamps) {
    ticks[time] = true;
  } else if (timestamps.length) {
    const { lo, hi } = _lookup(timestamps, time);
    const timestamp = timestamps[lo] >= time ? timestamps[lo] : timestamps[hi];
    ticks[timestamp] = true;
  }
}
function setMajorTicks(scale, ticks, map2, majorUnit) {
  const adapter = scale._adapter;
  const first = +adapter.startOf(ticks[0].value, majorUnit);
  const last = ticks[ticks.length - 1].value;
  let major, index2;
  for (major = first; major <= last; major = +adapter.add(major, 1, majorUnit)) {
    index2 = map2[major];
    if (index2 >= 0) {
      ticks[index2].major = true;
    }
  }
  return ticks;
}
function ticksFromTimestamps(scale, values, majorUnit) {
  const ticks = [];
  const map2 = {};
  const ilen = values.length;
  let i, value;
  for (i = 0; i < ilen; ++i) {
    value = values[i];
    map2[value] = i;
    ticks.push({
      value,
      major: false
    });
  }
  return ilen === 0 || !majorUnit ? ticks : setMajorTicks(scale, ticks, map2, majorUnit);
}
class TimeScale extends Scale {
  constructor(props) {
    super(props);
    this._cache = {
      data: [],
      labels: [],
      all: []
    };
    this._unit = "day";
    this._majorUnit = void 0;
    this._offsets = {};
    this._normalized = false;
    this._parseOpts = void 0;
  }
  init(scaleOpts, opts = {}) {
    const time = scaleOpts.time || (scaleOpts.time = {});
    const adapter = this._adapter = new adapters._date(scaleOpts.adapters.date);
    adapter.init(opts);
    mergeIf(time.displayFormats, adapter.formats());
    this._parseOpts = {
      parser: time.parser,
      round: time.round,
      isoWeekday: time.isoWeekday
    };
    super.init(scaleOpts);
    this._normalized = opts.normalized;
  }
  parse(raw, index2) {
    if (raw === void 0) {
      return null;
    }
    return parse(this, raw);
  }
  beforeLayout() {
    super.beforeLayout();
    this._cache = {
      data: [],
      labels: [],
      all: []
    };
  }
  determineDataLimits() {
    const options = this.options;
    const adapter = this._adapter;
    const unit = options.time.unit || "day";
    let { min, max, minDefined, maxDefined } = this.getUserBounds();
    function _applyBounds(bounds) {
      if (!minDefined && !isNaN(bounds.min)) {
        min = Math.min(min, bounds.min);
      }
      if (!maxDefined && !isNaN(bounds.max)) {
        max = Math.max(max, bounds.max);
      }
    }
    if (!minDefined || !maxDefined) {
      _applyBounds(this._getLabelBounds());
      if (options.bounds !== "ticks" || options.ticks.source !== "labels") {
        _applyBounds(this.getMinMax(false));
      }
    }
    min = isNumberFinite(min) && !isNaN(min) ? min : +adapter.startOf(Date.now(), unit);
    max = isNumberFinite(max) && !isNaN(max) ? max : +adapter.endOf(Date.now(), unit) + 1;
    this.min = Math.min(min, max - 1);
    this.max = Math.max(min + 1, max);
  }
  _getLabelBounds() {
    const arr = this.getLabelTimestamps();
    let min = Number.POSITIVE_INFINITY;
    let max = Number.NEGATIVE_INFINITY;
    if (arr.length) {
      min = arr[0];
      max = arr[arr.length - 1];
    }
    return {
      min,
      max
    };
  }
  buildTicks() {
    const options = this.options;
    const timeOpts = options.time;
    const tickOpts = options.ticks;
    const timestamps = tickOpts.source === "labels" ? this.getLabelTimestamps() : this._generate();
    if (options.bounds === "ticks" && timestamps.length) {
      this.min = this._userMin || timestamps[0];
      this.max = this._userMax || timestamps[timestamps.length - 1];
    }
    const min = this.min;
    const max = this.max;
    const ticks = _filterBetween(timestamps, min, max);
    this._unit = timeOpts.unit || (tickOpts.autoSkip ? determineUnitForAutoTicks(timeOpts.minUnit, this.min, this.max, this._getLabelCapacity(min)) : determineUnitForFormatting(this, ticks.length, timeOpts.minUnit, this.min, this.max));
    this._majorUnit = !tickOpts.major.enabled || this._unit === "year" ? void 0 : determineMajorUnit(this._unit);
    this.initOffsets(timestamps);
    if (options.reverse) {
      ticks.reverse();
    }
    return ticksFromTimestamps(this, ticks, this._majorUnit);
  }
  afterAutoSkip() {
    if (this.options.offsetAfterAutoskip) {
      this.initOffsets(this.ticks.map((tick) => +tick.value));
    }
  }
  initOffsets(timestamps = []) {
    let start = 0;
    let end = 0;
    let first, last;
    if (this.options.offset && timestamps.length) {
      first = this.getDecimalForValue(timestamps[0]);
      if (timestamps.length === 1) {
        start = 1 - first;
      } else {
        start = (this.getDecimalForValue(timestamps[1]) - first) / 2;
      }
      last = this.getDecimalForValue(timestamps[timestamps.length - 1]);
      if (timestamps.length === 1) {
        end = last;
      } else {
        end = (last - this.getDecimalForValue(timestamps[timestamps.length - 2])) / 2;
      }
    }
    const limit = timestamps.length < 3 ? 0.5 : 0.25;
    start = _limitValue(start, 0, limit);
    end = _limitValue(end, 0, limit);
    this._offsets = {
      start,
      end,
      factor: 1 / (start + 1 + end)
    };
  }
  _generate() {
    const adapter = this._adapter;
    const min = this.min;
    const max = this.max;
    const options = this.options;
    const timeOpts = options.time;
    const minor = timeOpts.unit || determineUnitForAutoTicks(timeOpts.minUnit, min, max, this._getLabelCapacity(min));
    const stepSize = valueOrDefault(options.ticks.stepSize, 1);
    const weekday = minor === "week" ? timeOpts.isoWeekday : false;
    const hasWeekday = isNumber(weekday) || weekday === true;
    const ticks = {};
    let first = min;
    let time, count;
    if (hasWeekday) {
      first = +adapter.startOf(first, "isoWeek", weekday);
    }
    first = +adapter.startOf(first, hasWeekday ? "day" : minor);
    if (adapter.diff(max, min, minor) > 1e5 * stepSize) {
      throw new Error(min + " and " + max + " are too far apart with stepSize of " + stepSize + " " + minor);
    }
    const timestamps = options.ticks.source === "data" && this.getDataTimestamps();
    for (time = first, count = 0; time < max; time = +adapter.add(time, stepSize, minor), count++) {
      addTick(ticks, time, timestamps);
    }
    if (time === max || options.bounds === "ticks" || count === 1) {
      addTick(ticks, time, timestamps);
    }
    return Object.keys(ticks).sort((a, b) => a - b).map((x) => +x);
  }
  getLabelForValue(value) {
    const adapter = this._adapter;
    const timeOpts = this.options.time;
    if (timeOpts.tooltipFormat) {
      return adapter.format(value, timeOpts.tooltipFormat);
    }
    return adapter.format(value, timeOpts.displayFormats.datetime);
  }
  format(value, format) {
    const options = this.options;
    const formats = options.time.displayFormats;
    const unit = this._unit;
    const fmt = format || formats[unit];
    return this._adapter.format(value, fmt);
  }
  _tickFormatFunction(time, index2, ticks, format) {
    const options = this.options;
    const formatter = options.ticks.callback;
    if (formatter) {
      return callback(formatter, [
        time,
        index2,
        ticks
      ], this);
    }
    const formats = options.time.displayFormats;
    const unit = this._unit;
    const majorUnit = this._majorUnit;
    const minorFormat = unit && formats[unit];
    const majorFormat = majorUnit && formats[majorUnit];
    const tick = ticks[index2];
    const major = majorUnit && majorFormat && tick && tick.major;
    return this._adapter.format(time, format || (major ? majorFormat : minorFormat));
  }
  generateTickLabels(ticks) {
    let i, ilen, tick;
    for (i = 0, ilen = ticks.length; i < ilen; ++i) {
      tick = ticks[i];
      tick.label = this._tickFormatFunction(tick.value, i, ticks);
    }
  }
  getDecimalForValue(value) {
    return value === null ? NaN : (value - this.min) / (this.max - this.min);
  }
  getPixelForValue(value) {
    const offsets = this._offsets;
    const pos = this.getDecimalForValue(value);
    return this.getPixelForDecimal((offsets.start + pos) * offsets.factor);
  }
  getValueForPixel(pixel) {
    const offsets = this._offsets;
    const pos = this.getDecimalForPixel(pixel) / offsets.factor - offsets.end;
    return this.min + pos * (this.max - this.min);
  }
  _getLabelSize(label) {
    const ticksOpts = this.options.ticks;
    const tickLabelWidth = this.ctx.measureText(label).width;
    const angle = toRadians(this.isHorizontal() ? ticksOpts.maxRotation : ticksOpts.minRotation);
    const cosRotation = Math.cos(angle);
    const sinRotation = Math.sin(angle);
    const tickFontSize = this._resolveTickFontOptions(0).size;
    return {
      w: tickLabelWidth * cosRotation + tickFontSize * sinRotation,
      h: tickLabelWidth * sinRotation + tickFontSize * cosRotation
    };
  }
  _getLabelCapacity(exampleTime) {
    const timeOpts = this.options.time;
    const displayFormats = timeOpts.displayFormats;
    const format = displayFormats[timeOpts.unit] || displayFormats.millisecond;
    const exampleLabel = this._tickFormatFunction(exampleTime, 0, ticksFromTimestamps(this, [
      exampleTime
    ], this._majorUnit), format);
    const size = this._getLabelSize(exampleLabel);
    const capacity = Math.floor(this.isHorizontal() ? this.width / size.w : this.height / size.h) - 1;
    return capacity > 0 ? capacity : 1;
  }
  getDataTimestamps() {
    let timestamps = this._cache.data || [];
    let i, ilen;
    if (timestamps.length) {
      return timestamps;
    }
    const metas = this.getMatchingVisibleMetas();
    if (this._normalized && metas.length) {
      return this._cache.data = metas[0].controller.getAllParsedValues(this);
    }
    for (i = 0, ilen = metas.length; i < ilen; ++i) {
      timestamps = timestamps.concat(metas[i].controller.getAllParsedValues(this));
    }
    return this._cache.data = this.normalize(timestamps);
  }
  getLabelTimestamps() {
    const timestamps = this._cache.labels || [];
    let i, ilen;
    if (timestamps.length) {
      return timestamps;
    }
    const labels = this.getLabels();
    for (i = 0, ilen = labels.length; i < ilen; ++i) {
      timestamps.push(parse(this, labels[i]));
    }
    return this._cache.labels = this._normalized ? timestamps : this.normalize(timestamps);
  }
  normalize(values) {
    return _arrayUnique(values.sort(sorter));
  }
}
__publicField(TimeScale, "id", "time");
__publicField(TimeScale, "defaults", {
  bounds: "data",
  adapters: {},
  time: {
    parser: false,
    unit: false,
    round: false,
    isoWeekday: false,
    minUnit: "millisecond",
    displayFormats: {}
  },
  ticks: {
    source: "auto",
    callback: false,
    major: {
      enabled: false
    }
  }
});
function interpolate(table, val, reverse) {
  let lo = 0;
  let hi = table.length - 1;
  let prevSource, nextSource, prevTarget, nextTarget;
  if (reverse) {
    if (val >= table[lo].pos && val <= table[hi].pos) {
      ({ lo, hi } = _lookupByKey(table, "pos", val));
    }
    ({ pos: prevSource, time: prevTarget } = table[lo]);
    ({ pos: nextSource, time: nextTarget } = table[hi]);
  } else {
    if (val >= table[lo].time && val <= table[hi].time) {
      ({ lo, hi } = _lookupByKey(table, "time", val));
    }
    ({ time: prevSource, pos: prevTarget } = table[lo]);
    ({ time: nextSource, pos: nextTarget } = table[hi]);
  }
  const span = nextSource - prevSource;
  return span ? prevTarget + (nextTarget - prevTarget) * (val - prevSource) / span : prevTarget;
}
class TimeSeriesScale extends TimeScale {
  constructor(props) {
    super(props);
    this._table = [];
    this._minPos = void 0;
    this._tableRange = void 0;
  }
  initOffsets() {
    const timestamps = this._getTimestampsForTable();
    const table = this._table = this.buildLookupTable(timestamps);
    this._minPos = interpolate(table, this.min);
    this._tableRange = interpolate(table, this.max) - this._minPos;
    super.initOffsets(timestamps);
  }
  buildLookupTable(timestamps) {
    const { min, max } = this;
    const items = [];
    const table = [];
    let i, ilen, prev, curr, next;
    for (i = 0, ilen = timestamps.length; i < ilen; ++i) {
      curr = timestamps[i];
      if (curr >= min && curr <= max) {
        items.push(curr);
      }
    }
    if (items.length < 2) {
      return [
        {
          time: min,
          pos: 0
        },
        {
          time: max,
          pos: 1
        }
      ];
    }
    for (i = 0, ilen = items.length; i < ilen; ++i) {
      next = items[i + 1];
      prev = items[i - 1];
      curr = items[i];
      if (Math.round((next + prev) / 2) !== curr) {
        table.push({
          time: curr,
          pos: i / (ilen - 1)
        });
      }
    }
    return table;
  }
  _getTimestampsForTable() {
    let timestamps = this._cache.all || [];
    if (timestamps.length) {
      return timestamps;
    }
    const data = this.getDataTimestamps();
    const label = this.getLabelTimestamps();
    if (data.length && label.length) {
      timestamps = this.normalize(data.concat(label));
    } else {
      timestamps = data.length ? data : label;
    }
    timestamps = this._cache.all = timestamps;
    return timestamps;
  }
  getDecimalForValue(value) {
    return (interpolate(this._table, value) - this._minPos) / this._tableRange;
  }
  getValueForPixel(pixel) {
    const offsets = this._offsets;
    const decimal = this.getDecimalForPixel(pixel) / offsets.factor - offsets.end;
    return interpolate(this._table, decimal * this._tableRange + this._minPos, true);
  }
}
__publicField(TimeSeriesScale, "id", "timeseries");
__publicField(TimeSeriesScale, "defaults", TimeScale.defaults);
var scales = /* @__PURE__ */ Object.freeze({
  __proto__: null,
  CategoryScale,
  LinearScale,
  LogarithmicScale,
  RadialLinearScale,
  TimeScale,
  TimeSeriesScale
});
const registerables = [
  controllers,
  elements,
  plugins,
  scales
];
Chart.register(...registerables);
const R = 6371;
function computeDistance(coords1, coords2) {
  const long1 = toRadian(coords1.longitude);
  const lat1 = toRadian(coords1.latitude);
  const long2 = toRadian(coords2.longitude);
  const lat2 = toRadian(coords2.latitude);
  const longSquareSin = Math.sin((long2 - long1) / 2) ** 2;
  const latSquareSin = Math.sin((lat2 - lat1) / 2) ** 2;
  const d = 2 * R * Math.asin(Math.sqrt(latSquareSin + Math.cos(lat1) * Math.cos(lat2) * longSquareSin));
  return d;
}
const RAD = Math.PI / 180;
function toRadian(deg) {
  return deg * RAD;
}
let preparedData = null;
function prepare() {
  const airports = csvParse(airportsString);
  const flights = csvParse(flightsString);
  const airportMap = new Map(airports.map((airport) => [airport.iata, airport]));
  for (const flight of flights) {
    const origAirport = airportMap.get(flight.origin);
    const destAirport = airportMap.get(flight.destination);
    flight.distance = computeDistance(origAirport, destAirport);
  }
  preparedData = { flights, airportMap };
}
const ROOT = document.getElementById("chart");
const opaqueCheckBox = document.getElementById("opaque-color");
let currentChart = null;
function drawScattered(data) {
  if (!preparedData)
    throw new Error("Please prepare the data first.");
  reset();
  currentChart = new Chart(ROOT, {
    type: "scatter",
    data: {
      datasets: [
        {
          data: preparedData.flights,
          backgroundColor: opaqueCheckBox.checked ? "rgb(0, 125, 255)" : "rgba(0, 125, 255, .20)"
        }
      ]
    },
    options: {
      animation: false,
      parsing: {
        xAxisKey: "distance",
        yAxisKey: "count"
      },
      plugins: {
        legend: {
          display: false
        },
        title: {
          display: true,
          text: "Number of flights for a distance",
          position: "bottom"
        },
        tooltip: {
          displayColors: false,
          callbacks: {
            label: (item) => {
              const orig = preparedData.airportMap.get(item.raw.origin);
              const dest = preparedData.airportMap.get(item.raw.destination);
              const result = `✈ ${orig.name} (${orig.iata}) → ${dest.name} (${dest.iata}): ${Math.round(item.raw.distance)} km`;
              return result;
            }
          }
        }
      },
      scales: {
        x: {
          title: {
            text: "distance →",
            align: "end",
            display: true
          },
          ticks: {
            format: {
              style: "unit",
              unit: "kilometer"
            }
          }
        },
        y: {
          type: "logarithmic",
          title: {
            text: "# of flights →",
            align: "end",
            display: true
          }
        }
      }
    }
  });
}
function openTooltip() {
  if (!currentChart)
    throw new Error("No chart is present, please draw a chart first");
  const renderedDataset = currentChart.getDatasetMeta(0);
  const node = currentChart.canvas;
  const rect = node.getBoundingClientRect();
  const point = renderedDataset.data[2426];
  const event = new MouseEvent("mousemove", {
    clientX: rect.left + point.x,
    clientY: rect.top + point.y,
    cancelable: true,
    bubbles: true
  });
  node.dispatchEvent(event);
}
function reset() {
  if (currentChart) {
    currentChart.destroy();
    currentChart = null;
  }
}
async function runAllTheThings() {
  [
    // Force prettier to use a multiline formatting
    "prepare",
    "add-scatter-chart-button",
    "open-tooltip"
  ].forEach((id) => document.getElementById(id).click());
}
document.getElementById("prepare").addEventListener("click", prepare);
document.getElementById("add-scatter-chart-button").addEventListener("click", drawScattered);
document.getElementById("open-tooltip").addEventListener("click", openTooltip);
document.getElementById("reset").addEventListener("click", reset);
document.getElementById("run-all").addEventListener("click", runAllTheThings);
//# sourceMappingURL=chartjs-7fd89fd7.js.map
