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default function(a, b) {\n  return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;\n}\n","import ascending from \"./ascending.js\";\n\nexport default function(f) {\n  let delta = f;\n  let compare = f;\n\n  if (f.length === 1) {\n    delta = (d, x) => f(d) - x;\n    compare = ascendingComparator(f);\n  }\n\n  function left(a, x, lo, hi) {\n    if (lo == null) lo = 0;\n    if (hi == null) hi = a.length;\n    while (lo < hi) {\n      const mid = (lo + hi) >>> 1;\n      if (compare(a[mid], x) < 0) lo = mid + 1;\n      else hi = mid;\n    }\n    return lo;\n  }\n\n  function right(a, x, lo, hi) {\n    if (lo == null) lo = 0;\n    if (hi == null) hi = a.length;\n    while (lo < hi) {\n      const mid = (lo + hi) >>> 1;\n      if (compare(a[mid], x) > 0) hi = mid;\n      else lo = mid + 1;\n    }\n    return lo;\n  }\n\n  function center(a, x, lo, hi) {\n    if (lo == null) lo = 0;\n    if (hi == null) hi = a.length;\n    const i = left(a, x, lo, hi - 1);\n    return i > lo && delta(a[i - 1], x) > -delta(a[i], x) ? i - 1 : i;\n  }\n\n  return {left, center, right};\n}\n\nfunction ascendingComparator(f) {\n  return (d, x) => ascending(f(d), x);\n}\n","export default function(x) {\n  return x === null ? NaN : +x;\n}\n\nexport function* numbers(values, valueof) {\n  if (valueof === undefined) {\n    for (let value of values) {\n      if (value != null && (value = +value) >= value) {\n        yield value;\n      }\n    }\n  } else {\n    let index = -1;\n    for (let value of values) {\n      if ((value = valueof(value, ++index, values)) != null && (value = +value) >= value) {\n        yield value;\n      }\n    }\n  }\n}\n","import ascending from \"./ascending.js\";\nimport bisector from \"./bisector.js\";\nimport number from \"./number.js\";\n\nconst ascendingBisect = bisector(ascending);\nexport const bisectRight = ascendingBisect.right;\nexport const bisectLeft = ascendingBisect.left;\nexport const bisectCenter = bisector(number).center;\nexport default bisectRight;\n","export default function max(values, valueof) {\n  let max;\n  if (valueof === undefined) {\n    for (const value of values) {\n      if (value != null\n          && (max < value || (max === undefined && value >= value))) {\n        max = value;\n      }\n    }\n  } else {\n    let index = -1;\n    for (let value of values) {\n      if ((value = valueof(value, ++index, values)) != null\n          && (max < value || (max === undefined && value >= value))) {\n        max = value;\n      }\n    }\n  }\n  return max;\n}\n","export default function min(values, valueof) {\n  let min;\n  if (valueof === undefined) {\n    for (const value of values) {\n      if (value != null\n          && (min > value || (min === undefined && value >= value))) {\n        min = value;\n      }\n    }\n  } else {\n    let index = -1;\n    for (let value of values) {\n      if ((value = valueof(value, ++index, values)) != null\n          && (min > value || (min === undefined && value >= value))) {\n        min = value;\n      }\n    }\n  }\n  return min;\n}\n","export var slice = Array.prototype.slice;\n","export default function(x) {\n  return x;\n}\n","import {slice} from \"./array\";\nimport identity from \"./identity\";\n\nvar top = 1,\n    right = 2,\n    bottom = 3,\n    left = 4,\n    epsilon = 1e-6;\n\nfunction translateX(x) {\n  return \"translate(\" + (x + 0.5) + \",0)\";\n}\n\nfunction translateY(y) {\n  return \"translate(0,\" + (y + 0.5) + \")\";\n}\n\nfunction number(scale) {\n  return function(d) {\n    return +scale(d);\n  };\n}\n\nfunction center(scale) {\n  var offset = Math.max(0, scale.bandwidth() - 1) / 2; // Adjust for 0.5px offset.\n  if (scale.round()) offset = Math.round(offset);\n  return function(d) {\n    return +scale(d) + offset;\n  };\n}\n\nfunction entering() {\n  return !this.__axis;\n}\n\nfunction axis(orient, scale) {\n  var tickArguments = [],\n      tickValues = null,\n      tickFormat = null,\n      tickSizeInner = 6,\n      tickSizeOuter = 6,\n      tickPadding = 3,\n      k = orient === top || orient === left ? -1 : 1,\n      x = orient === left || orient === right ? \"x\" : \"y\",\n      transform = orient === top || orient === bottom ? translateX : translateY;\n\n  function axis(context) {\n    var values = tickValues == null ? (scale.ticks ? scale.ticks.apply(scale, tickArguments) : scale.domain()) : tickValues,\n        format = tickFormat == null ? (scale.tickFormat ? scale.tickFormat.apply(scale, tickArguments) : identity) : tickFormat,\n        spacing = Math.max(tickSizeInner, 0) + tickPadding,\n        range = scale.range(),\n        range0 = +range[0] + 0.5,\n        range1 = +range[range.length - 1] + 0.5,\n        position = (scale.bandwidth ? center : number)(scale.copy()),\n        selection = context.selection ? context.selection() : context,\n        path = selection.selectAll(\".domain\").data([null]),\n        tick = selection.selectAll(\".tick\").data(values, scale).order(),\n        tickExit = tick.exit(),\n        tickEnter = tick.enter().append(\"g\").attr(\"class\", \"tick\"),\n        line = tick.select(\"line\"),\n        text = tick.select(\"text\");\n\n    path = path.merge(path.enter().insert(\"path\", \".tick\")\n        .attr(\"class\", \"domain\")\n        .attr(\"stroke\", \"currentColor\"));\n\n    tick = tick.merge(tickEnter);\n\n    line = line.merge(tickEnter.append(\"line\")\n        .attr(\"stroke\", \"currentColor\")\n        .attr(x + \"2\", k * tickSizeInner));\n\n    text = text.merge(tickEnter.append(\"text\")\n        .attr(\"fill\", \"currentColor\")\n        .attr(x, k * spacing)\n        .attr(\"dy\", orient === top ? \"0em\" : orient === bottom ? \"0.71em\" : \"0.32em\"));\n\n    if (context !== selection) {\n      path = path.transition(context);\n      tick = tick.transition(context);\n      line = line.transition(context);\n      text = text.transition(context);\n\n      tickExit = tickExit.transition(context)\n          .attr(\"opacity\", epsilon)\n          .attr(\"transform\", function(d) { return isFinite(d = position(d)) ? transform(d) : this.getAttribute(\"transform\"); });\n\n      tickEnter\n          .attr(\"opacity\", epsilon)\n          .attr(\"transform\", function(d) { var p = this.parentNode.__axis; return transform(p && isFinite(p = p(d)) ? p : position(d)); });\n    }\n\n    tickExit.remove();\n\n    path\n        .attr(\"d\", orient === left || orient == right\n            ? (tickSizeOuter ? \"M\" + k * tickSizeOuter + \",\" + range0 + \"H0.5V\" + range1 + \"H\" + k * tickSizeOuter : \"M0.5,\" + range0 + \"V\" + range1)\n            : (tickSizeOuter ? \"M\" + range0 + \",\" + k * tickSizeOuter + \"V0.5H\" + range1 + \"V\" + k * tickSizeOuter : \"M\" + range0 + \",0.5H\" + range1));\n\n    tick\n        .attr(\"opacity\", 1)\n        .attr(\"transform\", function(d) { return transform(position(d)); });\n\n    line\n        .attr(x + \"2\", k * tickSizeInner);\n\n    text\n        .attr(x, k * spacing)\n        .text(format);\n\n    selection.filter(entering)\n        .attr(\"fill\", \"none\")\n        .attr(\"font-size\", 10)\n        .attr(\"font-family\", \"sans-serif\")\n        .attr(\"text-anchor\", orient === right ? \"start\" : orient === left ? \"end\" : \"middle\");\n\n    selection\n        .each(function() { this.__axis = position; });\n  }\n\n  axis.scale = function(_) {\n    return arguments.length ? (scale = _, axis) : scale;\n  };\n\n  axis.ticks = function() {\n    return tickArguments = slice.call(arguments), axis;\n  };\n\n  axis.tickArguments = function(_) {\n    return arguments.length ? (tickArguments = _ == null ? [] : slice.call(_), axis) : tickArguments.slice();\n  };\n\n  axis.tickValues = function(_) {\n    return arguments.length ? (tickValues = _ == null ? null : slice.call(_), axis) : tickValues && tickValues.slice();\n  };\n\n  axis.tickFormat = function(_) {\n    return arguments.length ? (tickFormat = _, axis) : tickFormat;\n  };\n\n  axis.tickSize = function(_) {\n    return arguments.length ? (tickSizeInner = tickSizeOuter = +_, axis) : tickSizeInner;\n  };\n\n  axis.tickSizeInner = function(_) {\n    return arguments.length ? (tickSizeInner = +_, axis) : tickSizeInner;\n  };\n\n  axis.tickSizeOuter = function(_) {\n    return arguments.length ? (tickSizeOuter = +_, axis) : tickSizeOuter;\n  };\n\n  axis.tickPadding = function(_) {\n    return arguments.length ? (tickPadding = +_, axis) : tickPadding;\n  };\n\n  return axis;\n}\n\nexport function axisTop(scale) {\n  return axis(top, scale);\n}\n\nexport function axisRight(scale) {\n  return axis(right, scale);\n}\n\nexport function axisBottom(scale) {\n  return axis(bottom, scale);\n}\n\nexport function axisLeft(scale) {\n  return axis(left, scale);\n}\n","export {\n  axisTop,\n  axisRight,\n  axisBottom,\n  axisLeft\n} from \"./axis\";\n","var pi = Math.PI,\n    tau = 2 * pi,\n    epsilon = 1e-6,\n    tauEpsilon = tau - epsilon;\n\nfunction Path() {\n  this._x0 = this._y0 = // start of current subpath\n  this._x1 = this._y1 = null; // end of current subpath\n  this._ = \"\";\n}\n\nfunction path() {\n  return new Path;\n}\n\nPath.prototype = path.prototype = {\n  constructor: Path,\n  moveTo: function(x, y) {\n    this._ += \"M\" + (this._x0 = this._x1 = +x) + \",\" + (this._y0 = this._y1 = +y);\n  },\n  closePath: function() {\n    if (this._x1 !== null) {\n      this._x1 = this._x0, this._y1 = this._y0;\n      this._ += \"Z\";\n    }\n  },\n  lineTo: function(x, y) {\n    this._ += \"L\" + (this._x1 = +x) + \",\" + (this._y1 = +y);\n  },\n  quadraticCurveTo: function(x1, y1, x, y) {\n    this._ += \"Q\" + (+x1) + \",\" + (+y1) + \",\" + (this._x1 = +x) + \",\" + (this._y1 = +y);\n  },\n  bezierCurveTo: function(x1, y1, x2, y2, x, y) {\n    this._ += \"C\" + (+x1) + \",\" + (+y1) + \",\" + (+x2) + \",\" + (+y2) + \",\" + (this._x1 = +x) + \",\" + (this._y1 = +y);\n  },\n  arcTo: function(x1, y1, x2, y2, r) {\n    x1 = +x1, y1 = +y1, x2 = +x2, y2 = +y2, r = +r;\n    var x0 = this._x1,\n        y0 = this._y1,\n        x21 = x2 - x1,\n        y21 = y2 - y1,\n        x01 = x0 - x1,\n        y01 = y0 - y1,\n        l01_2 = x01 * x01 + y01 * y01;\n\n    // Is the radius negative? Error.\n    if (r < 0) throw new Error(\"negative radius: \" + r);\n\n    // Is this path empty? Move to (x1,y1).\n    if (this._x1 === null) {\n      this._ += \"M\" + (this._x1 = x1) + \",\" + (this._y1 = y1);\n    }\n\n    // Or, is (x1,y1) coincident with (x0,y0)? Do nothing.\n    else if (!(l01_2 > epsilon));\n\n    // Or, are (x0,y0), (x1,y1) and (x2,y2) collinear?\n    // Equivalently, is (x1,y1) coincident with (x2,y2)?\n    // Or, is the radius zero? Line to (x1,y1).\n    else if (!(Math.abs(y01 * x21 - y21 * x01) > epsilon) || !r) {\n      this._ += \"L\" + (this._x1 = x1) + \",\" + (this._y1 = y1);\n    }\n\n    // Otherwise, draw an arc!\n    else {\n      var x20 = x2 - x0,\n          y20 = y2 - y0,\n          l21_2 = x21 * x21 + y21 * y21,\n          l20_2 = x20 * x20 + y20 * y20,\n          l21 = Math.sqrt(l21_2),\n          l01 = Math.sqrt(l01_2),\n          l = r * Math.tan((pi - Math.acos((l21_2 + l01_2 - l20_2) / (2 * l21 * l01))) / 2),\n          t01 = l / l01,\n          t21 = l / l21;\n\n      // If the start tangent is not coincident with (x0,y0), line to.\n      if (Math.abs(t01 - 1) > epsilon) {\n        this._ += \"L\" + (x1 + t01 * x01) + \",\" + (y1 + t01 * y01);\n      }\n\n      this._ += \"A\" + r + \",\" + r + \",0,0,\" + (+(y01 * x20 > x01 * y20)) + \",\" + (this._x1 = x1 + t21 * x21) + \",\" + (this._y1 = y1 + t21 * y21);\n    }\n  },\n  arc: function(x, y, r, a0, a1, ccw) {\n    x = +x, y = +y, r = +r, ccw = !!ccw;\n    var dx = r * Math.cos(a0),\n        dy = r * Math.sin(a0),\n        x0 = x + dx,\n        y0 = y + dy,\n        cw = 1 ^ ccw,\n        da = ccw ? a0 - a1 : a1 - a0;\n\n    // Is the radius negative? Error.\n    if (r < 0) throw new Error(\"negative radius: \" + r);\n\n    // Is this path empty? Move to (x0,y0).\n    if (this._x1 === null) {\n      this._ += \"M\" + x0 + \",\" + y0;\n    }\n\n    // Or, is (x0,y0) not coincident with the previous point? Line to (x0,y0).\n    else if (Math.abs(this._x1 - x0) > epsilon || Math.abs(this._y1 - y0) > epsilon) {\n      this._ += \"L\" + x0 + \",\" + y0;\n    }\n\n    // Is this arc empty? We’re done.\n    if (!r) return;\n\n    // Does the angle go the wrong way? Flip the direction.\n    if (da < 0) da = da % tau + tau;\n\n    // Is this a complete circle? Draw two arcs to complete the circle.\n    if (da > tauEpsilon) {\n      this._ += \"A\" + r + \",\" + r + \",0,1,\" + cw + \",\" + (x - dx) + \",\" + (y - dy) + \"A\" + r + \",\" + r + \",0,1,\" + cw + \",\" + (this._x1 = x0) + \",\" + (this._y1 = y0);\n    }\n\n    // Is this arc non-empty? Draw an arc!\n    else if (da > epsilon) {\n      this._ += \"A\" + r + \",\" + r + \",0,\" + (+(da >= pi)) + \",\" + cw + \",\" + (this._x1 = x + r * Math.cos(a1)) + \",\" + (this._y1 = y + r * Math.sin(a1));\n    }\n  },\n  rect: function(x, y, w, h) {\n    this._ += \"M\" + (this._x0 = this._x1 = +x) + \",\" + (this._y0 = this._y1 = +y) + \"h\" + (+w) + \"v\" + (+h) + \"h\" + (-w) + \"Z\";\n  },\n  toString: function() {\n    return this._;\n  }\n};\n\nexport default path;\n","var e10 = Math.sqrt(50),\n    e5 = Math.sqrt(10),\n    e2 = Math.sqrt(2);\n\nexport default function(start, stop, count) {\n  var reverse,\n      i = -1,\n      n,\n      ticks,\n      step;\n\n  stop = +stop, start = +start, count = +count;\n  if (start === stop && count > 0) return [start];\n  if (reverse = stop < start) n = start, start = stop, stop = n;\n  if ((step = tickIncrement(start, stop, count)) === 0 || !isFinite(step)) return [];\n\n  if (step > 0) {\n    let r0 = Math.round(start / step), r1 = Math.round(stop / step);\n    if (r0 * step < start) ++r0;\n    if (r1 * step > stop) --r1;\n    ticks = new Array(n = r1 - r0 + 1);\n    while (++i < n) ticks[i] = (r0 + i) * step;\n  } else {\n    step = -step;\n    let r0 = Math.round(start * step), r1 = Math.round(stop * step);\n    if (r0 / step < start) ++r0;\n    if (r1 / step > stop) --r1;\n    ticks = new Array(n = r1 - r0 + 1);\n    while (++i < n) ticks[i] = (r0 + i) / step;\n  }\n\n  if (reverse) ticks.reverse();\n\n  return ticks;\n}\n\nexport function tickIncrement(start, stop, count) {\n  var step = (stop - start) / Math.max(0, count),\n      power = Math.floor(Math.log(step) / Math.LN10),\n      error = step / Math.pow(10, power);\n  return power >= 0\n      ? (error >= e10 ? 10 : error >= e5 ? 5 : error >= e2 ? 2 : 1) * Math.pow(10, power)\n      : -Math.pow(10, -power) / (error >= e10 ? 10 : error >= e5 ? 5 : error >= e2 ? 2 : 1);\n}\n\nexport function tickStep(start, stop, count) {\n  var step0 = Math.abs(stop - start) / Math.max(0, count),\n      step1 = Math.pow(10, Math.floor(Math.log(step0) / Math.LN10)),\n      error = step0 / step1;\n  if (error >= e10) step1 *= 10;\n  else if (error >= e5) step1 *= 5;\n  else if (error >= e2) step1 *= 2;\n  return stop < start ? -step1 : step1;\n}\n","export default function(constructor, factory, prototype) {\n  constructor.prototype = factory.prototype = prototype;\n  prototype.constructor = constructor;\n}\n\nexport function extend(parent, definition) {\n  var prototype = Object.create(parent.prototype);\n  for (var key in definition) prototype[key] = definition[key];\n  return prototype;\n}\n","import define, {extend} from \"./define.js\";\n\nexport function Color() {}\n\nexport var darker = 0.7;\nexport var brighter = 1 / darker;\n\nvar reI = \"\\\\s*([+-]?\\\\d+)\\\\s*\",\n    reN = \"\\\\s*([+-]?\\\\d*\\\\.?\\\\d+(?:[eE][+-]?\\\\d+)?)\\\\s*\",\n    reP = \"\\\\s*([+-]?\\\\d*\\\\.?\\\\d+(?:[eE][+-]?\\\\d+)?)%\\\\s*\",\n    reHex = /^#([0-9a-f]{3,8})$/,\n    reRgbInteger = new RegExp(\"^rgb\\\\(\" + [reI, reI, reI] + \"\\\\)$\"),\n    reRgbPercent = new RegExp(\"^rgb\\\\(\" + [reP, reP, reP] + \"\\\\)$\"),\n    reRgbaInteger = new RegExp(\"^rgba\\\\(\" + [reI, reI, reI, reN] + \"\\\\)$\"),\n    reRgbaPercent = new RegExp(\"^rgba\\\\(\" + [reP, reP, reP, reN] + \"\\\\)$\"),\n    reHslPercent = new RegExp(\"^hsl\\\\(\" + [reN, reP, reP] + \"\\\\)$\"),\n    reHslaPercent = new RegExp(\"^hsla\\\\(\" + [reN, reP, reP, reN] + \"\\\\)$\");\n\nvar named = {\n  aliceblue: 0xf0f8ff,\n  antiquewhite: 0xfaebd7,\n  aqua: 0x00ffff,\n  aquamarine: 0x7fffd4,\n  azure: 0xf0ffff,\n  beige: 0xf5f5dc,\n  bisque: 0xffe4c4,\n  black: 0x000000,\n  blanchedalmond: 0xffebcd,\n  blue: 0x0000ff,\n  blueviolet: 0x8a2be2,\n  brown: 0xa52a2a,\n  burlywood: 0xdeb887,\n  cadetblue: 0x5f9ea0,\n  chartreuse: 0x7fff00,\n  chocolate: 0xd2691e,\n  coral: 0xff7f50,\n  cornflowerblue: 0x6495ed,\n  cornsilk: 0xfff8dc,\n  crimson: 0xdc143c,\n  cyan: 0x00ffff,\n  darkblue: 0x00008b,\n  darkcyan: 0x008b8b,\n  darkgoldenrod: 0xb8860b,\n  darkgray: 0xa9a9a9,\n  darkgreen: 0x006400,\n  darkgrey: 0xa9a9a9,\n  darkkhaki: 0xbdb76b,\n  darkmagenta: 0x8b008b,\n  darkolivegreen: 0x556b2f,\n  darkorange: 0xff8c00,\n  darkorchid: 0x9932cc,\n  darkred: 0x8b0000,\n  darksalmon: 0xe9967a,\n  darkseagreen: 0x8fbc8f,\n  darkslateblue: 0x483d8b,\n  darkslategray: 0x2f4f4f,\n  darkslategrey: 0x2f4f4f,\n  darkturquoise: 0x00ced1,\n  darkviolet: 0x9400d3,\n  deeppink: 0xff1493,\n  deepskyblue: 0x00bfff,\n  dimgray: 0x696969,\n  dimgrey: 0x696969,\n  dodgerblue: 0x1e90ff,\n  firebrick: 0xb22222,\n  floralwhite: 0xfffaf0,\n  forestgreen: 0x228b22,\n  fuchsia: 0xff00ff,\n  gainsboro: 0xdcdcdc,\n  ghostwhite: 0xf8f8ff,\n  gold: 0xffd700,\n  goldenrod: 0xdaa520,\n  gray: 0x808080,\n  green: 0x008000,\n  greenyellow: 0xadff2f,\n  grey: 0x808080,\n  honeydew: 0xf0fff0,\n  hotpink: 0xff69b4,\n  indianred: 0xcd5c5c,\n  indigo: 0x4b0082,\n  ivory: 0xfffff0,\n  khaki: 0xf0e68c,\n  lavender: 0xe6e6fa,\n  lavenderblush: 0xfff0f5,\n  lawngreen: 0x7cfc00,\n  lemonchiffon: 0xfffacd,\n  lightblue: 0xadd8e6,\n  lightcoral: 0xf08080,\n  lightcyan: 0xe0ffff,\n  lightgoldenrodyellow: 0xfafad2,\n  lightgray: 0xd3d3d3,\n  lightgreen: 0x90ee90,\n  lightgrey: 0xd3d3d3,\n  lightpink: 0xffb6c1,\n  lightsalmon: 0xffa07a,\n  lightseagreen: 0x20b2aa,\n  lightskyblue: 0x87cefa,\n  lightslategray: 0x778899,\n  lightslategrey: 0x778899,\n  lightsteelblue: 0xb0c4de,\n  lightyellow: 0xffffe0,\n  lime: 0x00ff00,\n  limegreen: 0x32cd32,\n  linen: 0xfaf0e6,\n  magenta: 0xff00ff,\n  maroon: 0x800000,\n  mediumaquamarine: 0x66cdaa,\n  mediumblue: 0x0000cd,\n  mediumorchid: 0xba55d3,\n  mediumpurple: 0x9370db,\n  mediumseagreen: 0x3cb371,\n  mediumslateblue: 0x7b68ee,\n  mediumspringgreen: 0x00fa9a,\n  mediumturquoise: 0x48d1cc,\n  mediumvioletred: 0xc71585,\n  midnightblue: 0x191970,\n  mintcream: 0xf5fffa,\n  mistyrose: 0xffe4e1,\n  moccasin: 0xffe4b5,\n  navajowhite: 0xffdead,\n  navy: 0x000080,\n  oldlace: 0xfdf5e6,\n  olive: 0x808000,\n  olivedrab: 0x6b8e23,\n  orange: 0xffa500,\n  orangered: 0xff4500,\n  orchid: 0xda70d6,\n  palegoldenrod: 0xeee8aa,\n  palegreen: 0x98fb98,\n  paleturquoise: 0xafeeee,\n  palevioletred: 0xdb7093,\n  papayawhip: 0xffefd5,\n  peachpuff: 0xffdab9,\n  peru: 0xcd853f,\n  pink: 0xffc0cb,\n  plum: 0xdda0dd,\n  powderblue: 0xb0e0e6,\n  purple: 0x800080,\n  rebeccapurple: 0x663399,\n  red: 0xff0000,\n  rosybrown: 0xbc8f8f,\n  royalblue: 0x4169e1,\n  saddlebrown: 0x8b4513,\n  salmon: 0xfa8072,\n  sandybrown: 0xf4a460,\n  seagreen: 0x2e8b57,\n  seashell: 0xfff5ee,\n  sienna: 0xa0522d,\n  silver: 0xc0c0c0,\n  skyblue: 0x87ceeb,\n  slateblue: 0x6a5acd,\n  slategray: 0x708090,\n  slategrey: 0x708090,\n  snow: 0xfffafa,\n  springgreen: 0x00ff7f,\n  steelblue: 0x4682b4,\n  tan: 0xd2b48c,\n  teal: 0x008080,\n  thistle: 0xd8bfd8,\n  tomato: 0xff6347,\n  turquoise: 0x40e0d0,\n  violet: 0xee82ee,\n  wheat: 0xf5deb3,\n  white: 0xffffff,\n  whitesmoke: 0xf5f5f5,\n  yellow: 0xffff00,\n  yellowgreen: 0x9acd32\n};\n\ndefine(Color, color, {\n  copy: function(channels) {\n    return Object.assign(new this.constructor, this, channels);\n  },\n  displayable: function() {\n    return this.rgb().displayable();\n  },\n  hex: color_formatHex, // Deprecated! Use color.formatHex.\n  formatHex: color_formatHex,\n  formatHsl: color_formatHsl,\n  formatRgb: color_formatRgb,\n  toString: color_formatRgb\n});\n\nfunction color_formatHex() {\n  return this.rgb().formatHex();\n}\n\nfunction color_formatHsl() {\n  return hslConvert(this).formatHsl();\n}\n\nfunction color_formatRgb() {\n  return this.rgb().formatRgb();\n}\n\nexport default function color(format) {\n  var m, l;\n  format = (format + \"\").trim().toLowerCase();\n  return (m = reHex.exec(format)) ? (l = m[1].length, m = parseInt(m[1], 16), l === 6 ? rgbn(m) // #ff0000\n      : l === 3 ? new Rgb((m >> 8 & 0xf) | (m >> 4 & 0xf0), (m >> 4 & 0xf) | (m & 0xf0), ((m & 0xf) << 4) | (m & 0xf), 1) // #f00\n      : l === 8 ? rgba(m >> 24 & 0xff, m >> 16 & 0xff, m >> 8 & 0xff, (m & 0xff) / 0xff) // #ff000000\n      : l === 4 ? rgba((m >> 12 & 0xf) | (m >> 8 & 0xf0), (m >> 8 & 0xf) | (m >> 4 & 0xf0), (m >> 4 & 0xf) | (m & 0xf0), (((m & 0xf) << 4) | (m & 0xf)) / 0xff) // #f000\n      : null) // invalid hex\n      : (m = reRgbInteger.exec(format)) ? new Rgb(m[1], m[2], m[3], 1) // rgb(255, 0, 0)\n      : (m = reRgbPercent.exec(format)) ? new Rgb(m[1] * 255 / 100, m[2] * 255 / 100, m[3] * 255 / 100, 1) // rgb(100%, 0%, 0%)\n      : (m = reRgbaInteger.exec(format)) ? rgba(m[1], m[2], m[3], m[4]) // rgba(255, 0, 0, 1)\n      : (m = reRgbaPercent.exec(format)) ? rgba(m[1] * 255 / 100, m[2] * 255 / 100, m[3] * 255 / 100, m[4]) // rgb(100%, 0%, 0%, 1)\n      : (m = reHslPercent.exec(format)) ? hsla(m[1], m[2] / 100, m[3] / 100, 1) // hsl(120, 50%, 50%)\n      : (m = reHslaPercent.exec(format)) ? hsla(m[1], m[2] / 100, m[3] / 100, m[4]) // hsla(120, 50%, 50%, 1)\n      : named.hasOwnProperty(format) ? rgbn(named[format]) // eslint-disable-line no-prototype-builtins\n      : format === \"transparent\" ? new Rgb(NaN, NaN, NaN, 0)\n      : null;\n}\n\nfunction rgbn(n) {\n  return new Rgb(n >> 16 & 0xff, n >> 8 & 0xff, n & 0xff, 1);\n}\n\nfunction rgba(r, g, b, a) {\n  if (a <= 0) r = g = b = NaN;\n  return new Rgb(r, g, b, a);\n}\n\nexport function rgbConvert(o) {\n  if (!(o instanceof Color)) o = color(o);\n  if (!o) return new Rgb;\n  o = o.rgb();\n  return new Rgb(o.r, o.g, o.b, o.opacity);\n}\n\nexport function rgb(r, g, b, opacity) {\n  return arguments.length === 1 ? rgbConvert(r) : new Rgb(r, g, b, opacity == null ? 1 : opacity);\n}\n\nexport function Rgb(r, g, b, opacity) {\n  this.r = +r;\n  this.g = +g;\n  this.b = +b;\n  this.opacity = +opacity;\n}\n\ndefine(Rgb, rgb, extend(Color, {\n  brighter: function(k) {\n    k = k == null ? brighter : Math.pow(brighter, k);\n    return new Rgb(this.r * k, this.g * k, this.b * k, this.opacity);\n  },\n  darker: function(k) {\n    k = k == null ? darker : Math.pow(darker, k);\n    return new Rgb(this.r * k, this.g * k, this.b * k, this.opacity);\n  },\n  rgb: function() {\n    return this;\n  },\n  displayable: function() {\n    return (-0.5 <= this.r && this.r < 255.5)\n        && (-0.5 <= this.g && this.g < 255.5)\n        && (-0.5 <= this.b && this.b < 255.5)\n        && (0 <= this.opacity && this.opacity <= 1);\n  },\n  hex: rgb_formatHex, // Deprecated! Use color.formatHex.\n  formatHex: rgb_formatHex,\n  formatRgb: rgb_formatRgb,\n  toString: rgb_formatRgb\n}));\n\nfunction rgb_formatHex() {\n  return \"#\" + hex(this.r) + hex(this.g) + hex(this.b);\n}\n\nfunction rgb_formatRgb() {\n  var a = this.opacity; a = isNaN(a) ? 1 : Math.max(0, Math.min(1, a));\n  return (a === 1 ? \"rgb(\" : \"rgba(\")\n      + Math.max(0, Math.min(255, Math.round(this.r) || 0)) + \", \"\n      + Math.max(0, Math.min(255, Math.round(this.g) || 0)) + \", \"\n      + Math.max(0, Math.min(255, Math.round(this.b) || 0))\n      + (a === 1 ? \")\" : \", \" + a + \")\");\n}\n\nfunction hex(value) {\n  value = Math.max(0, Math.min(255, Math.round(value) || 0));\n  return (value < 16 ? \"0\" : \"\") + value.toString(16);\n}\n\nfunction hsla(h, s, l, a) {\n  if (a <= 0) h = s = l = NaN;\n  else if (l <= 0 || l >= 1) h = s = NaN;\n  else if (s <= 0) h = NaN;\n  return new Hsl(h, s, l, a);\n}\n\nexport function hslConvert(o) {\n  if (o instanceof Hsl) return new Hsl(o.h, o.s, o.l, o.opacity);\n  if (!(o instanceof Color)) o = color(o);\n  if (!o) return new Hsl;\n  if (o instanceof Hsl) return o;\n  o = o.rgb();\n  var r = o.r / 255,\n      g = o.g / 255,\n      b = o.b / 255,\n      min = Math.min(r, g, b),\n      max = Math.max(r, g, b),\n      h = NaN,\n      s = max - min,\n      l = (max + min) / 2;\n  if (s) {\n    if (r === max) h = (g - b) / s + (g < b) * 6;\n    else if (g === max) h = (b - r) / s + 2;\n    else h = (r - g) / s + 4;\n    s /= l < 0.5 ? max + min : 2 - max - min;\n    h *= 60;\n  } else {\n    s = l > 0 && l < 1 ? 0 : h;\n  }\n  return new Hsl(h, s, l, o.opacity);\n}\n\nexport function hsl(h, s, l, opacity) {\n  return arguments.length === 1 ? hslConvert(h) : new Hsl(h, s, l, opacity == null ? 1 : opacity);\n}\n\nfunction Hsl(h, s, l, opacity) {\n  this.h = +h;\n  this.s = +s;\n  this.l = +l;\n  this.opacity = +opacity;\n}\n\ndefine(Hsl, hsl, extend(Color, {\n  brighter: function(k) {\n    k = k == null ? brighter : Math.pow(brighter, k);\n    return new Hsl(this.h, this.s, this.l * k, this.opacity);\n  },\n  darker: function(k) {\n    k = k == null ? darker : Math.pow(darker, k);\n    return new Hsl(this.h, this.s, this.l * k, this.opacity);\n  },\n  rgb: function() {\n    var h = this.h % 360 + (this.h < 0) * 360,\n        s = isNaN(h) || isNaN(this.s) ? 0 : this.s,\n        l = this.l,\n        m2 = l + (l < 0.5 ? l : 1 - l) * s,\n        m1 = 2 * l - m2;\n    return new Rgb(\n      hsl2rgb(h >= 240 ? h - 240 : h + 120, m1, m2),\n      hsl2rgb(h, m1, m2),\n      hsl2rgb(h < 120 ? h + 240 : h - 120, m1, m2),\n      this.opacity\n    );\n  },\n  displayable: function() {\n    return (0 <= this.s && this.s <= 1 || isNaN(this.s))\n        && (0 <= this.l && this.l <= 1)\n        && (0 <= this.opacity && this.opacity <= 1);\n  },\n  formatHsl: function() {\n    var a = this.opacity; a = isNaN(a) ? 1 : Math.max(0, Math.min(1, a));\n    return (a === 1 ? \"hsl(\" : \"hsla(\")\n        + (this.h || 0) + \", \"\n        + (this.s || 0) * 100 + \"%, \"\n        + (this.l || 0) * 100 + \"%\"\n        + (a === 1 ? \")\" : \", \" + a + \")\");\n  }\n}));\n\n/* From FvD 13.37, CSS Color Module Level 3 */\nfunction hsl2rgb(h, m1, m2) {\n  return (h < 60 ? m1 + (m2 - m1) * h / 60\n      : h < 180 ? m2\n      : h < 240 ? m1 + (m2 - m1) * (240 - h) / 60\n      : m1) * 255;\n}\n","export function basis(t1, v0, v1, v2, v3) {\n  var t2 = t1 * t1, t3 = t2 * t1;\n  return ((1 - 3 * t1 + 3 * t2 - t3) * v0\n      + (4 - 6 * t2 + 3 * t3) * v1\n      + (1 + 3 * t1 + 3 * t2 - 3 * t3) * v2\n      + t3 * v3) / 6;\n}\n\nexport default function(values) {\n  var n = values.length - 1;\n  return function(t) {\n    var i = t <= 0 ? (t = 0) : t >= 1 ? (t = 1, n - 1) : Math.floor(t * n),\n        v1 = values[i],\n        v2 = values[i + 1],\n        v0 = i > 0 ? values[i - 1] : 2 * v1 - v2,\n        v3 = i < n - 1 ? values[i + 2] : 2 * v2 - v1;\n    return basis((t - i / n) * n, v0, v1, v2, v3);\n  };\n}\n","import {basis} from \"./basis.js\";\n\nexport default function(values) {\n  var n = values.length;\n  return function(t) {\n    var i = Math.floor(((t %= 1) < 0 ? ++t : t) * n),\n        v0 = values[(i + n - 1) % n],\n        v1 = values[i % n],\n        v2 = values[(i + 1) % n],\n        v3 = values[(i + 2) % n];\n    return basis((t - i / n) * n, v0, v1, v2, v3);\n  };\n}\n","export default x => () => x;\n","import constant from \"./constant.js\";\n\nfunction linear(a, d) {\n  return function(t) {\n    return a + t * d;\n  };\n}\n\nfunction exponential(a, b, y) {\n  return a = Math.pow(a, y), b = Math.pow(b, y) - a, y = 1 / y, function(t) {\n    return Math.pow(a + t * b, y);\n  };\n}\n\nexport function hue(a, b) {\n  var d = b - a;\n  return d ? linear(a, d > 180 || d < -180 ? d - 360 * Math.round(d / 360) : d) : constant(isNaN(a) ? b : a);\n}\n\nexport function gamma(y) {\n  return (y = +y) === 1 ? nogamma : function(a, b) {\n    return b - a ? exponential(a, b, y) : constant(isNaN(a) ? b : a);\n  };\n}\n\nexport default function nogamma(a, b) {\n  var d = b - a;\n  return d ? linear(a, d) : constant(isNaN(a) ? b : a);\n}\n","import {rgb as colorRgb} from \"d3-color\";\nimport basis from \"./basis.js\";\nimport basisClosed from \"./basisClosed.js\";\nimport nogamma, {gamma} from \"./color.js\";\n\nexport default (function rgbGamma(y) {\n  var color = gamma(y);\n\n  function rgb(start, end) {\n    var r = color((start = colorRgb(start)).r, (end = colorRgb(end)).r),\n        g = color(start.g, end.g),\n        b = color(start.b, end.b),\n        opacity = nogamma(start.opacity, end.opacity);\n    return function(t) {\n      start.r = r(t);\n      start.g = g(t);\n      start.b = b(t);\n      start.opacity = opacity(t);\n      return start + \"\";\n    };\n  }\n\n  rgb.gamma = rgbGamma;\n\n  return rgb;\n})(1);\n\nfunction rgbSpline(spline) {\n  return function(colors) {\n    var n = colors.length,\n        r = new Array(n),\n        g = new Array(n),\n        b = new Array(n),\n        i, color;\n    for (i = 0; i < n; ++i) {\n      color = colorRgb(colors[i]);\n      r[i] = color.r || 0;\n      g[i] = color.g || 0;\n      b[i] = color.b || 0;\n    }\n    r = spline(r);\n    g = spline(g);\n    b = spline(b);\n    color.opacity = 1;\n    return function(t) {\n      color.r = r(t);\n      color.g = g(t);\n      color.b = b(t);\n      return color + \"\";\n    };\n  };\n}\n\nexport var rgbBasis = rgbSpline(basis);\nexport var rgbBasisClosed = rgbSpline(basisClosed);\n","import value from \"./value.js\";\nimport numberArray, {isNumberArray} from \"./numberArray.js\";\n\nexport default function(a, b) {\n  return (isNumberArray(b) ? numberArray : genericArray)(a, b);\n}\n\nexport function genericArray(a, b) {\n  var nb = b ? b.length : 0,\n      na = a ? Math.min(nb, a.length) : 0,\n      x = new Array(na),\n      c = new Array(nb),\n      i;\n\n  for (i = 0; i < na; ++i) x[i] = value(a[i], b[i]);\n  for (; i < nb; ++i) c[i] = b[i];\n\n  return function(t) {\n    for (i = 0; i < na; ++i) c[i] = x[i](t);\n    return c;\n  };\n}\n","export default function(a, b) {\n  var d = new Date;\n  return a = +a, b = +b, function(t) {\n    return d.setTime(a * (1 - t) + b * t), d;\n  };\n}\n","export default function(a, b) {\n  return a = +a, b = +b, function(t) {\n    return a * (1 - t) + b * t;\n  };\n}\n","import value from \"./value.js\";\n\nexport default function(a, b) {\n  var i = {},\n      c = {},\n      k;\n\n  if (a === null || typeof a !== \"object\") a = {};\n  if (b === null || typeof b !== \"object\") b = {};\n\n  for (k in b) {\n    if (k in a) {\n      i[k] = value(a[k], b[k]);\n    } else {\n      c[k] = b[k];\n    }\n  }\n\n  return function(t) {\n    for (k in i) c[k] = i[k](t);\n    return c;\n  };\n}\n","import number from \"./number.js\";\n\nvar reA = /[-+]?(?:\\d+\\.?\\d*|\\.?\\d+)(?:[eE][-+]?\\d+)?/g,\n    reB = new RegExp(reA.source, \"g\");\n\nfunction zero(b) {\n  return function() {\n    return b;\n  };\n}\n\nfunction one(b) {\n  return function(t) {\n    return b(t) + \"\";\n  };\n}\n\nexport default function(a, b) {\n  var bi = reA.lastIndex = reB.lastIndex = 0, // scan index for next number in b\n      am, // current match in a\n      bm, // current match in b\n      bs, // string preceding current number in b, if any\n      i = -1, // index in s\n      s = [], // string constants and placeholders\n      q = []; // number interpolators\n\n  // Coerce inputs to strings.\n  a = a + \"\", b = b + \"\";\n\n  // Interpolate pairs of numbers in a & b.\n  while ((am = reA.exec(a))\n      && (bm = reB.exec(b))) {\n    if ((bs = bm.index) > bi) { // a string precedes the next number in b\n      bs = b.slice(bi, bs);\n      if (s[i]) s[i] += bs; // coalesce with previous string\n      else s[++i] = bs;\n    }\n    if ((am = am[0]) === (bm = bm[0])) { // numbers in a & b match\n      if (s[i]) s[i] += bm; // coalesce with previous string\n      else s[++i] = bm;\n    } else { // interpolate non-matching numbers\n      s[++i] = null;\n      q.push({i: i, x: number(am, bm)});\n    }\n    bi = reB.lastIndex;\n  }\n\n  // Add remains of b.\n  if (bi < b.length) {\n    bs = b.slice(bi);\n    if (s[i]) s[i] += bs; // coalesce with previous string\n    else s[++i] = bs;\n  }\n\n  // Special optimization for only a single match.\n  // Otherwise, interpolate each of the numbers and rejoin the string.\n  return s.length < 2 ? (q[0]\n      ? one(q[0].x)\n      : zero(b))\n      : (b = q.length, function(t) {\n          for (var i = 0, o; i < b; ++i) s[(o = q[i]).i] = o.x(t);\n          return s.join(\"\");\n        });\n}\n","export default function(a, b) {\n  if (!b) b = [];\n  var n = a ? Math.min(b.length, a.length) : 0,\n      c = b.slice(),\n      i;\n  return function(t) {\n    for (i = 0; i < n; ++i) c[i] = a[i] * (1 - t) + b[i] * t;\n    return c;\n  };\n}\n\nexport function isNumberArray(x) {\n  return ArrayBuffer.isView(x) && !(x instanceof DataView);\n}\n","import {color} from \"d3-color\";\nimport rgb from \"./rgb.js\";\nimport {genericArray} from \"./array.js\";\nimport date from \"./date.js\";\nimport number from \"./number.js\";\nimport object from \"./object.js\";\nimport string from \"./string.js\";\nimport constant from \"./constant.js\";\nimport numberArray, {isNumberArray} from \"./numberArray.js\";\n\nexport default function(a, b) {\n  var t = typeof b, c;\n  return b == null || t === \"boolean\" ? constant(b)\n      : (t === \"number\" ? number\n      : t === \"string\" ? ((c = color(b)) ? (b = c, rgb) : string)\n      : b instanceof color ? rgb\n      : b instanceof Date ? date\n      : isNumberArray(b) ? numberArray\n      : Array.isArray(b) ? genericArray\n      : typeof b.valueOf !== \"function\" && typeof b.toString !== \"function\" || isNaN(b) ? object\n      : number)(a, b);\n}\n","export default function(a, b) {\n  return a = +a, b = +b, function(t) {\n    return Math.round(a * (1 - t) + b * t);\n  };\n}\n","export default function constants(x) {\n  return function() {\n    return x;\n  };\n}\n","export default function number(x) {\n  return +x;\n}\n","import {bisect} from \"d3-array\";\nimport {interpolate as interpolateValue, interpolateNumber, interpolateRound} from \"d3-interpolate\";\nimport constant from \"./constant.js\";\nimport number from \"./number.js\";\n\nvar unit = [0, 1];\n\nexport function identity(x) {\n  return x;\n}\n\nfunction normalize(a, b) {\n  return (b -= (a = +a))\n      ? function(x) { return (x - a) / b; }\n      : constant(isNaN(b) ? NaN : 0.5);\n}\n\nfunction clamper(a, b) {\n  var t;\n  if (a > b) t = a, a = b, b = t;\n  return function(x) { return Math.max(a, Math.min(b, x)); };\n}\n\n// normalize(a, b)(x) takes a domain value x in [a,b] and returns the corresponding parameter t in [0,1].\n// interpolate(a, b)(t) takes a parameter t in [0,1] and returns the corresponding range value x in [a,b].\nfunction bimap(domain, range, interpolate) {\n  var d0 = domain[0], d1 = domain[1], r0 = range[0], r1 = range[1];\n  if (d1 < d0) d0 = normalize(d1, d0), r0 = interpolate(r1, r0);\n  else d0 = normalize(d0, d1), r0 = interpolate(r0, r1);\n  return function(x) { return r0(d0(x)); };\n}\n\nfunction polymap(domain, range, interpolate) {\n  var j = Math.min(domain.length, range.length) - 1,\n      d = new Array(j),\n      r = new Array(j),\n      i = -1;\n\n  // Reverse descending domains.\n  if (domain[j] < domain[0]) {\n    domain = domain.slice().reverse();\n    range = range.slice().reverse();\n  }\n\n  while (++i < j) {\n    d[i] = normalize(domain[i], domain[i + 1]);\n    r[i] = interpolate(range[i], range[i + 1]);\n  }\n\n  return function(x) {\n    var i = bisect(domain, x, 1, j) - 1;\n    return r[i](d[i](x));\n  };\n}\n\nexport function copy(source, target) {\n  return target\n      .domain(source.domain())\n      .range(source.range())\n      .interpolate(source.interpolate())\n      .clamp(source.clamp())\n      .unknown(source.unknown());\n}\n\nexport function transformer() {\n  var domain = unit,\n      range = unit,\n      interpolate = interpolateValue,\n      transform,\n      untransform,\n      unknown,\n      clamp = identity,\n      piecewise,\n      output,\n      input;\n\n  function rescale() {\n    var n = Math.min(domain.length, range.length);\n    if (clamp !== identity) clamp = clamper(domain[0], domain[n - 1]);\n    piecewise = n > 2 ? polymap : bimap;\n    output = input = null;\n    return scale;\n  }\n\n  function scale(x) {\n    return x == null || isNaN(x = +x) ? unknown : (output || (output = piecewise(domain.map(transform), range, interpolate)))(transform(clamp(x)));\n  }\n\n  scale.invert = function(y) {\n    return clamp(untransform((input || (input = piecewise(range, domain.map(transform), interpolateNumber)))(y)));\n  };\n\n  scale.domain = function(_) {\n    return arguments.length ? (domain = Array.from(_, number), rescale()) : domain.slice();\n  };\n\n  scale.range = function(_) {\n    return arguments.length ? (range = Array.from(_), rescale()) : range.slice();\n  };\n\n  scale.rangeRound = function(_) {\n    return range = Array.from(_), interpolate = interpolateRound, rescale();\n  };\n\n  scale.clamp = function(_) {\n    return arguments.length ? (clamp = _ ? true : identity, rescale()) : clamp !== identity;\n  };\n\n  scale.interpolate = function(_) {\n    return arguments.length ? (interpolate = _, rescale()) : interpolate;\n  };\n\n  scale.unknown = function(_) {\n    return arguments.length ? (unknown = _, scale) : unknown;\n  };\n\n  return function(t, u) {\n    transform = t, untransform = u;\n    return rescale();\n  };\n}\n\nexport default function continuous() {\n  return transformer()(identity, identity);\n}\n","export function initRange(domain, range) {\n  switch (arguments.length) {\n    case 0: break;\n    case 1: this.range(domain); break;\n    default: this.range(range).domain(domain); break;\n  }\n  return this;\n}\n\nexport function initInterpolator(domain, interpolator) {\n  switch (arguments.length) {\n    case 0: break;\n    case 1: {\n      if (typeof domain === \"function\") this.interpolator(domain);\n      else this.range(domain);\n      break;\n    }\n    default: {\n      this.domain(domain);\n      if (typeof interpolator === \"function\") this.interpolator(interpolator);\n      else this.range(interpolator);\n      break;\n    }\n  }\n  return this;\n}\n","// [[fill]align][sign][symbol][0][width][,][.precision][~][type]\nvar re = /^(?:(.)?([<>=^]))?([+\\-( ])?([$#])?(0)?(\\d+)?(,)?(\\.\\d+)?(~)?([a-z%])?$/i;\n\nexport default function formatSpecifier(specifier) {\n  if (!(match = re.exec(specifier))) throw new Error(\"invalid format: \" + specifier);\n  var match;\n  return new FormatSpecifier({\n    fill: match[1],\n    align: match[2],\n    sign: match[3],\n    symbol: match[4],\n    zero: match[5],\n    width: match[6],\n    comma: match[7],\n    precision: match[8] && match[8].slice(1),\n    trim: match[9],\n    type: match[10]\n  });\n}\n\nformatSpecifier.prototype = FormatSpecifier.prototype; // instanceof\n\nexport function FormatSpecifier(specifier) {\n  this.fill = specifier.fill === undefined ? \" \" : specifier.fill + \"\";\n  this.align = specifier.align === undefined ? \">\" : specifier.align + \"\";\n  this.sign = specifier.sign === undefined ? \"-\" : specifier.sign + \"\";\n  this.symbol = specifier.symbol === undefined ? \"\" : specifier.symbol + \"\";\n  this.zero = !!specifier.zero;\n  this.width = specifier.width === undefined ? undefined : +specifier.width;\n  this.comma = !!specifier.comma;\n  this.precision = specifier.precision === undefined ? undefined : +specifier.precision;\n  this.trim = !!specifier.trim;\n  this.type = specifier.type === undefined ? \"\" : specifier.type + \"\";\n}\n\nFormatSpecifier.prototype.toString = function() {\n  return this.fill\n      + this.align\n      + this.sign\n      + this.symbol\n      + (this.zero ? \"0\" : \"\")\n      + (this.width === undefined ? \"\" : Math.max(1, this.width | 0))\n      + (this.comma ? \",\" : \"\")\n      + (this.precision === undefined ? \"\" : \".\" + Math.max(0, this.precision | 0))\n      + (this.trim ? \"~\" : \"\")\n      + this.type;\n};\n","export default function(x) {\n  return Math.abs(x = Math.round(x)) >= 1e21\n      ? x.toLocaleString(\"en\").replace(/,/g, \"\")\n      : x.toString(10);\n}\n\n// Computes the decimal coefficient and exponent of the specified number x with\n// significant digits p, where x is positive and p is in [1, 21] or undefined.\n// For example, formatDecimalParts(1.23) returns [\"123\", 0].\nexport function formatDecimalParts(x, p) {\n  if ((i = (x = p ? x.toExponential(p - 1) : x.toExponential()).indexOf(\"e\")) < 0) return null; // NaN, ±Infinity\n  var i, coefficient = x.slice(0, i);\n\n  // The string returned by toExponential either has the form \\d\\.\\d+e[-+]\\d+\n  // (e.g., 1.2e+3) or the form \\de[-+]\\d+ (e.g., 1e+3).\n  return [\n    coefficient.length > 1 ? coefficient[0] + coefficient.slice(2) : coefficient,\n    +x.slice(i + 1)\n  ];\n}\n","import {formatDecimalParts} from \"./formatDecimal.js\";\n\nexport default function(x) {\n  return x = formatDecimalParts(Math.abs(x)), x ? x[1] : NaN;\n}\n","import exponent from \"./exponent.js\";\n\nexport default function(step, value) {\n  return Math.max(0, Math.max(-8, Math.min(8, Math.floor(exponent(value) / 3))) * 3 - exponent(Math.abs(step)));\n}\n","export default function(grouping, thousands) {\n  return function(value, width) {\n    var i = value.length,\n        t = [],\n        j = 0,\n        g = grouping[0],\n        length = 0;\n\n    while (i > 0 && g > 0) {\n      if (length + g + 1 > width) g = Math.max(1, width - length);\n      t.push(value.substring(i -= g, i + g));\n      if ((length += g + 1) > width) break;\n      g = grouping[j = (j + 1) % grouping.length];\n    }\n\n    return t.reverse().join(thousands);\n  };\n}\n","export default function(numerals) {\n  return function(value) {\n    return value.replace(/[0-9]/g, function(i) {\n      return numerals[+i];\n    });\n  };\n}\n","// Trims insignificant zeros, e.g., replaces 1.2000k with 1.2k.\nexport default function(s) {\n  out: for (var n = s.length, i = 1, i0 = -1, i1; i < n; ++i) {\n    switch (s[i]) {\n      case \".\": i0 = i1 = i; break;\n      case \"0\": if (i0 === 0) i0 = i; i1 = i; break;\n      default: if (!+s[i]) break out; if (i0 > 0) i0 = 0; break;\n    }\n  }\n  return i0 > 0 ? s.slice(0, i0) + s.slice(i1 + 1) : s;\n}\n","import {formatDecimalParts} from \"./formatDecimal.js\";\n\nexport var prefixExponent;\n\nexport default function(x, p) {\n  var d = formatDecimalParts(x, p);\n  if (!d) return x + \"\";\n  var coefficient = d[0],\n      exponent = d[1],\n      i = exponent - (prefixExponent = Math.max(-8, Math.min(8, Math.floor(exponent / 3))) * 3) + 1,\n      n = coefficient.length;\n  return i === n ? coefficient\n      : i > n ? coefficient + new Array(i - n + 1).join(\"0\")\n      : i > 0 ? coefficient.slice(0, i) + \".\" + coefficient.slice(i)\n      : \"0.\" + new Array(1 - i).join(\"0\") + formatDecimalParts(x, Math.max(0, p + i - 1))[0]; // less than 1y!\n}\n","import {formatDecimalParts} from \"./formatDecimal.js\";\n\nexport default function(x, p) {\n  var d = formatDecimalParts(x, p);\n  if (!d) return x + \"\";\n  var coefficient = d[0],\n      exponent = d[1];\n  return exponent < 0 ? \"0.\" + new Array(-exponent).join(\"0\") + coefficient\n      : coefficient.length > exponent + 1 ? coefficient.slice(0, exponent + 1) + \".\" + coefficient.slice(exponent + 1)\n      : coefficient + new Array(exponent - coefficient.length + 2).join(\"0\");\n}\n","import formatDecimal from \"./formatDecimal.js\";\nimport formatPrefixAuto from \"./formatPrefixAuto.js\";\nimport formatRounded from \"./formatRounded.js\";\n\nexport default {\n  \"%\": (x, p) => (x * 100).toFixed(p),\n  \"b\": (x) => Math.round(x).toString(2),\n  \"c\": (x) => x + \"\",\n  \"d\": formatDecimal,\n  \"e\": (x, p) => x.toExponential(p),\n  \"f\": (x, p) => x.toFixed(p),\n  \"g\": (x, p) => x.toPrecision(p),\n  \"o\": (x) => Math.round(x).toString(8),\n  \"p\": (x, p) => formatRounded(x * 100, p),\n  \"r\": formatRounded,\n  \"s\": formatPrefixAuto,\n  \"X\": (x) => Math.round(x).toString(16).toUpperCase(),\n  \"x\": (x) => Math.round(x).toString(16)\n};\n","export default function(x) {\n  return x;\n}\n","import exponent from \"./exponent.js\";\nimport formatGroup from \"./formatGroup.js\";\nimport formatNumerals from \"./formatNumerals.js\";\nimport formatSpecifier from \"./formatSpecifier.js\";\nimport formatTrim from \"./formatTrim.js\";\nimport formatTypes from \"./formatTypes.js\";\nimport {prefixExponent} from \"./formatPrefixAuto.js\";\nimport identity from \"./identity.js\";\n\nvar map = Array.prototype.map,\n    prefixes = [\"y\",\"z\",\"a\",\"f\",\"p\",\"n\",\"µ\",\"m\",\"\",\"k\",\"M\",\"G\",\"T\",\"P\",\"E\",\"Z\",\"Y\"];\n\nexport default function(locale) {\n  var group = locale.grouping === undefined || locale.thousands === undefined ? identity : formatGroup(map.call(locale.grouping, Number), locale.thousands + \"\"),\n      currencyPrefix = locale.currency === undefined ? \"\" : locale.currency[0] + \"\",\n      currencySuffix = locale.currency === undefined ? \"\" : locale.currency[1] + \"\",\n      decimal = locale.decimal === undefined ? \".\" : locale.decimal + \"\",\n      numerals = locale.numerals === undefined ? identity : formatNumerals(map.call(locale.numerals, String)),\n      percent = locale.percent === undefined ? \"%\" : locale.percent + \"\",\n      minus = locale.minus === undefined ? \"−\" : locale.minus + \"\",\n      nan = locale.nan === undefined ? \"NaN\" : locale.nan + \"\";\n\n  function newFormat(specifier) {\n    specifier = formatSpecifier(specifier);\n\n    var fill = specifier.fill,\n        align = specifier.align,\n        sign = specifier.sign,\n        symbol = specifier.symbol,\n        zero = specifier.zero,\n        width = specifier.width,\n        comma = specifier.comma,\n        precision = specifier.precision,\n        trim = specifier.trim,\n        type = specifier.type;\n\n    // The \"n\" type is an alias for \",g\".\n    if (type === \"n\") comma = true, type = \"g\";\n\n    // The \"\" type, and any invalid type, is an alias for \".12~g\".\n    else if (!formatTypes[type]) precision === undefined && (precision = 12), trim = true, type = \"g\";\n\n    // If zero fill is specified, padding goes after sign and before digits.\n    if (zero || (fill === \"0\" && align === \"=\")) zero = true, fill = \"0\", align = \"=\";\n\n    // Compute the prefix and suffix.\n    // For SI-prefix, the suffix is lazily computed.\n    var prefix = symbol === \"$\" ? currencyPrefix : symbol === \"#\" && /[boxX]/.test(type) ? \"0\" + type.toLowerCase() : \"\",\n        suffix = symbol === \"$\" ? currencySuffix : /[%p]/.test(type) ? percent : \"\";\n\n    // What format function should we use?\n    // Is this an integer type?\n    // Can this type generate exponential notation?\n    var formatType = formatTypes[type],\n        maybeSuffix = /[defgprs%]/.test(type);\n\n    // Set the default precision if not specified,\n    // or clamp the specified precision to the supported range.\n    // For significant precision, it must be in [1, 21].\n    // For fixed precision, it must be in [0, 20].\n    precision = precision === undefined ? 6\n        : /[gprs]/.test(type) ? Math.max(1, Math.min(21, precision))\n        : Math.max(0, Math.min(20, precision));\n\n    function format(value) {\n      var valuePrefix = prefix,\n          valueSuffix = suffix,\n          i, n, c;\n\n      if (type === \"c\") {\n        valueSuffix = formatType(value) + valueSuffix;\n        value = \"\";\n      } else {\n        value = +value;\n\n        // Determine the sign. -0 is not less than 0, but 1 / -0 is!\n        var valueNegative = value < 0 || 1 / value < 0;\n\n        // Perform the initial formatting.\n        value = isNaN(value) ? nan : formatType(Math.abs(value), precision);\n\n        // Trim insignificant zeros.\n        if (trim) value = formatTrim(value);\n\n        // If a negative value rounds to zero after formatting, and no explicit positive sign is requested, hide the sign.\n        if (valueNegative && +value === 0 && sign !== \"+\") valueNegative = false;\n\n        // Compute the prefix and suffix.\n        valuePrefix = (valueNegative ? (sign === \"(\" ? sign : minus) : sign === \"-\" || sign === \"(\" ? \"\" : sign) + valuePrefix;\n        valueSuffix = (type === \"s\" ? prefixes[8 + prefixExponent / 3] : \"\") + valueSuffix + (valueNegative && sign === \"(\" ? \")\" : \"\");\n\n        // Break the formatted value into the integer “value” part that can be\n        // grouped, and fractional or exponential “suffix” part that is not.\n        if (maybeSuffix) {\n          i = -1, n = value.length;\n          while (++i < n) {\n            if (c = value.charCodeAt(i), 48 > c || c > 57) {\n              valueSuffix = (c === 46 ? decimal + value.slice(i + 1) : value.slice(i)) + valueSuffix;\n              value = value.slice(0, i);\n              break;\n            }\n          }\n        }\n      }\n\n      // If the fill character is not \"0\", grouping is applied before padding.\n      if (comma && !zero) value = group(value, Infinity);\n\n      // Compute the padding.\n      var length = valuePrefix.length + value.length + valueSuffix.length,\n          padding = length < width ? new Array(width - length + 1).join(fill) : \"\";\n\n      // If the fill character is \"0\", grouping is applied after padding.\n      if (comma && zero) value = group(padding + value, padding.length ? width - valueSuffix.length : Infinity), padding = \"\";\n\n      // Reconstruct the final output based on the desired alignment.\n      switch (align) {\n        case \"<\": value = valuePrefix + value + valueSuffix + padding; break;\n        case \"=\": value = valuePrefix + padding + value + valueSuffix; break;\n        case \"^\": value = padding.slice(0, length = padding.length >> 1) + valuePrefix + value + valueSuffix + padding.slice(length); break;\n        default: value = padding + valuePrefix + value + valueSuffix; break;\n      }\n\n      return numerals(value);\n    }\n\n    format.toString = function() {\n      return specifier + \"\";\n    };\n\n    return format;\n  }\n\n  function formatPrefix(specifier, value) {\n    var f = newFormat((specifier = formatSpecifier(specifier), specifier.type = \"f\", specifier)),\n        e = Math.max(-8, Math.min(8, Math.floor(exponent(value) / 3))) * 3,\n        k = Math.pow(10, -e),\n        prefix = prefixes[8 + e / 3];\n    return function(value) {\n      return f(k * value) + prefix;\n    };\n  }\n\n  return {\n    format: newFormat,\n    formatPrefix: formatPrefix\n  };\n}\n","import formatLocale from \"./locale.js\";\n\nvar locale;\nexport var format;\nexport var formatPrefix;\n\ndefaultLocale({\n  thousands: \",\",\n  grouping: [3],\n  currency: [\"$\", \"\"]\n});\n\nexport default function defaultLocale(definition) {\n  locale = formatLocale(definition);\n  format = locale.format;\n  formatPrefix = locale.formatPrefix;\n  return locale;\n}\n","import exponent from \"./exponent.js\";\n\nexport default function(step, max) {\n  step = Math.abs(step), max = Math.abs(max) - step;\n  return Math.max(0, exponent(max) - exponent(step)) + 1;\n}\n","import exponent from \"./exponent.js\";\n\nexport default function(step) {\n  return Math.max(0, -exponent(Math.abs(step)));\n}\n","import {tickStep} from \"d3-array\";\nimport {format, formatPrefix, formatSpecifier, precisionFixed, precisionPrefix, precisionRound} from \"d3-format\";\n\nexport default function tickFormat(start, stop, count, specifier) {\n  var step = tickStep(start, stop, count),\n      precision;\n  specifier = formatSpecifier(specifier == null ? \",f\" : specifier);\n  switch (specifier.type) {\n    case \"s\": {\n      var value = Math.max(Math.abs(start), Math.abs(stop));\n      if (specifier.precision == null && !isNaN(precision = precisionPrefix(step, value))) specifier.precision = precision;\n      return formatPrefix(specifier, value);\n    }\n    case \"\":\n    case \"e\":\n    case \"g\":\n    case \"p\":\n    case \"r\": {\n      if (specifier.precision == null && !isNaN(precision = precisionRound(step, Math.max(Math.abs(start), Math.abs(stop))))) specifier.precision = precision - (specifier.type === \"e\");\n      break;\n    }\n    case \"f\":\n    case \"%\": {\n      if (specifier.precision == null && !isNaN(precision = precisionFixed(step))) specifier.precision = precision - (specifier.type === \"%\") * 2;\n      break;\n    }\n  }\n  return format(specifier);\n}\n","import {ticks, tickIncrement} from \"d3-array\";\nimport continuous, {copy} from \"./continuous.js\";\nimport {initRange} from \"./init.js\";\nimport tickFormat from \"./tickFormat.js\";\n\nexport function linearish(scale) {\n  var domain = scale.domain;\n\n  scale.ticks = function(count) {\n    var d = domain();\n    return ticks(d[0], d[d.length - 1], count == null ? 10 : count);\n  };\n\n  scale.tickFormat = function(count, specifier) {\n    var d = domain();\n    return tickFormat(d[0], d[d.length - 1], count == null ? 10 : count, specifier);\n  };\n\n  scale.nice = function(count) {\n    if (count == null) count = 10;\n\n    var d = domain();\n    var i0 = 0;\n    var i1 = d.length - 1;\n    var start = d[i0];\n    var stop = d[i1];\n    var prestep;\n    var step;\n    var maxIter = 10;\n\n    if (stop < start) {\n      step = start, start = stop, stop = step;\n      step = i0, i0 = i1, i1 = step;\n    }\n    \n    while (maxIter-- > 0) {\n      step = tickIncrement(start, stop, count);\n      if (step === prestep) {\n        d[i0] = start\n        d[i1] = stop\n        return domain(d);\n      } else if (step > 0) {\n        start = Math.floor(start / step) * step;\n        stop = Math.ceil(stop / step) * step;\n      } else if (step < 0) {\n        start = Math.ceil(start * step) / step;\n        stop = Math.floor(stop * step) / step;\n      } else {\n        break;\n      }\n      prestep = step;\n    }\n\n    return scale;\n  };\n\n  return scale;\n}\n\nexport default function linear() {\n  var scale = continuous();\n\n  scale.copy = function() {\n    return copy(scale, linear());\n  };\n\n  initRange.apply(scale, arguments);\n\n  return linearish(scale);\n}\n","function none() {}\n\nexport default function(selector) {\n  return selector == null ? none : function() {\n    return this.querySelector(selector);\n  };\n}\n","import {Selection} from \"./index\";\nimport selector from \"../selector\";\n\nexport default function(select) {\n  if (typeof select !== \"function\") select = selector(select);\n\n  for (var groups = this._groups, m = groups.length, subgroups = new Array(m), j = 0; j < m; ++j) {\n    for (var group = groups[j], n = group.length, subgroup = subgroups[j] = new Array(n), node, subnode, i = 0; i < n; ++i) {\n      if ((node = group[i]) && (subnode = select.call(node, node.__data__, i, group))) {\n        if (\"__data__\" in node) subnode.__data__ = node.__data__;\n        subgroup[i] = subnode;\n      }\n    }\n  }\n\n  return new Selection(subgroups, this._parents);\n}\n","function empty() {\n  return [];\n}\n\nexport default function(selector) {\n  return selector == null ? empty : function() {\n    return this.querySelectorAll(selector);\n  };\n}\n","import {Selection} from \"./index\";\nimport selectorAll from \"../selectorAll\";\n\nexport default function(select) {\n  if (typeof select !== \"function\") select = selectorAll(select);\n\n  for (var groups = this._groups, m = groups.length, subgroups = [], parents = [], j = 0; j < m; ++j) {\n    for (var group = groups[j], n = group.length, node, i = 0; i < n; ++i) {\n      if (node = group[i]) {\n        subgroups.push(select.call(node, node.__data__, i, group));\n        parents.push(node);\n      }\n    }\n  }\n\n  return new Selection(subgroups, parents);\n}\n","export default function(selector) {\n  return function() {\n    return this.matches(selector);\n  };\n}\n","import {Selection} from \"./index\";\nimport matcher from \"../matcher\";\n\nexport default function(match) {\n  if (typeof match !== \"function\") match = matcher(match);\n\n  for (var groups = this._groups, m = groups.length, subgroups = new Array(m), j = 0; j < m; ++j) {\n    for (var group = groups[j], n = group.length, subgroup = subgroups[j] = [], node, i = 0; i < n; ++i) {\n      if ((node = group[i]) && match.call(node, node.__data__, i, group)) {\n        subgroup.push(node);\n      }\n    }\n  }\n\n  return new Selection(subgroups, this._parents);\n}\n","export default function(update) {\n  return new Array(update.length);\n}\n","import sparse from \"./sparse\";\nimport {Selection} from \"./index\";\n\nexport default function() {\n  return new Selection(this._enter || this._groups.map(sparse), this._parents);\n}\n\nexport function EnterNode(parent, datum) {\n  this.ownerDocument = parent.ownerDocument;\n  this.namespaceURI = parent.namespaceURI;\n  this._next = null;\n  this._parent = parent;\n  this.__data__ = datum;\n}\n\nEnterNode.prototype = {\n  constructor: EnterNode,\n  appendChild: function(child) { return this._parent.insertBefore(child, this._next); },\n  insertBefore: function(child, next) { return this._parent.insertBefore(child, next); },\n  querySelector: function(selector) { return this._parent.querySelector(selector); },\n  querySelectorAll: function(selector) { return this._parent.querySelectorAll(selector); }\n};\n","export default function(x) {\n  return function() {\n    return x;\n  };\n}\n","import {Selection} from \"./index\";\nimport {EnterNode} from \"./enter\";\nimport constant from \"../constant\";\n\nvar keyPrefix = \"$\"; // Protect against keys like “__proto__”.\n\nfunction bindIndex(parent, group, enter, update, exit, data) {\n  var i = 0,\n      node,\n      groupLength = group.length,\n      dataLength = data.length;\n\n  // Put any non-null nodes that fit into update.\n  // Put any null nodes into enter.\n  // Put any remaining data into enter.\n  for (; i < dataLength; ++i) {\n    if (node = group[i]) {\n      node.__data__ = data[i];\n      update[i] = node;\n    } else {\n      enter[i] = new EnterNode(parent, data[i]);\n    }\n  }\n\n  // Put any non-null nodes that don’t fit into exit.\n  for (; i < groupLength; ++i) {\n    if (node = group[i]) {\n      exit[i] = node;\n    }\n  }\n}\n\nfunction bindKey(parent, group, enter, update, exit, data, key) {\n  var i,\n      node,\n      nodeByKeyValue = {},\n      groupLength = group.length,\n      dataLength = data.length,\n      keyValues = new Array(groupLength),\n      keyValue;\n\n  // Compute the key for each node.\n  // If multiple nodes have the same key, the duplicates are added to exit.\n  for (i = 0; i < groupLength; ++i) {\n    if (node = group[i]) {\n      keyValues[i] = keyValue = keyPrefix + key.call(node, node.__data__, i, group);\n      if (keyValue in nodeByKeyValue) {\n        exit[i] = node;\n      } else {\n        nodeByKeyValue[keyValue] = node;\n      }\n    }\n  }\n\n  // Compute the key for each datum.\n  // If there a node associated with this key, join and add it to update.\n  // If there is not (or the key is a duplicate), add it to enter.\n  for (i = 0; i < dataLength; ++i) {\n    keyValue = keyPrefix + key.call(parent, data[i], i, data);\n    if (node = nodeByKeyValue[keyValue]) {\n      update[i] = node;\n      node.__data__ = data[i];\n      nodeByKeyValue[keyValue] = null;\n    } else {\n      enter[i] = new EnterNode(parent, data[i]);\n    }\n  }\n\n  // Add any remaining nodes that were not bound to data to exit.\n  for (i = 0; i < groupLength; ++i) {\n    if ((node = group[i]) && (nodeByKeyValue[keyValues[i]] === node)) {\n      exit[i] = node;\n    }\n  }\n}\n\nexport default function(value, key) {\n  if (!value) {\n    data = new Array(this.size()), j = -1;\n    this.each(function(d) { data[++j] = d; });\n    return data;\n  }\n\n  var bind = key ? bindKey : bindIndex,\n      parents = this._parents,\n      groups = this._groups;\n\n  if (typeof value !== \"function\") value = constant(value);\n\n  for (var m = groups.length, update = new Array(m), enter = new Array(m), exit = new Array(m), j = 0; j < m; ++j) {\n    var parent = parents[j],\n        group = groups[j],\n        groupLength = group.length,\n        data = value.call(parent, parent && parent.__data__, j, parents),\n        dataLength = data.length,\n        enterGroup = enter[j] = new Array(dataLength),\n        updateGroup = update[j] = new Array(dataLength),\n        exitGroup = exit[j] = new Array(groupLength);\n\n    bind(parent, group, enterGroup, updateGroup, exitGroup, data, key);\n\n    // Now connect the enter nodes to their following update node, such that\n    // appendChild can insert the materialized enter node before this node,\n    // rather than at the end of the parent node.\n    for (var i0 = 0, i1 = 0, previous, next; i0 < dataLength; ++i0) {\n      if (previous = enterGroup[i0]) {\n        if (i0 >= i1) i1 = i0 + 1;\n        while (!(next = updateGroup[i1]) && ++i1 < dataLength);\n        previous._next = next || null;\n      }\n    }\n  }\n\n  update = new Selection(update, parents);\n  update._enter = enter;\n  update._exit = exit;\n  return update;\n}\n","import sparse from \"./sparse\";\nimport {Selection} from \"./index\";\n\nexport default function() {\n  return new Selection(this._exit || this._groups.map(sparse), this._parents);\n}\n","export default function(onenter, onupdate, onexit) {\n  var enter = this.enter(), update = this, exit = this.exit();\n  enter = typeof onenter === \"function\" ? onenter(enter) : enter.append(onenter + \"\");\n  if (onupdate != null) update = onupdate(update);\n  if (onexit == null) exit.remove(); else onexit(exit);\n  return enter && update ? enter.merge(update).order() : update;\n}\n","import {Selection} from \"./index\";\n\nexport default function(selection) {\n\n  for (var groups0 = this._groups, groups1 = selection._groups, m0 = groups0.length, m1 = groups1.length, m = Math.min(m0, m1), merges = new Array(m0), j = 0; j < m; ++j) {\n    for (var group0 = groups0[j], group1 = groups1[j], n = group0.length, merge = merges[j] = new Array(n), node, i = 0; i < n; ++i) {\n      if (node = group0[i] || group1[i]) {\n        merge[i] = node;\n      }\n    }\n  }\n\n  for (; j < m0; ++j) {\n    merges[j] = groups0[j];\n  }\n\n  return new Selection(merges, this._parents);\n}\n","export default function() {\n\n  for (var groups = this._groups, j = -1, m = groups.length; ++j < m;) {\n    for (var group = groups[j], i = group.length - 1, next = group[i], node; --i >= 0;) {\n      if (node = group[i]) {\n        if (next && node.compareDocumentPosition(next) ^ 4) next.parentNode.insertBefore(node, next);\n        next = node;\n      }\n    }\n  }\n\n  return this;\n}\n","import {Selection} from \"./index\";\n\nexport default function(compare) {\n  if (!compare) compare = ascending;\n\n  function compareNode(a, b) {\n    return a && b ? compare(a.__data__, b.__data__) : !a - !b;\n  }\n\n  for (var groups = this._groups, m = groups.length, sortgroups = new Array(m), j = 0; j < m; ++j) {\n    for (var group = groups[j], n = group.length, sortgroup = sortgroups[j] = new Array(n), node, i = 0; i < n; ++i) {\n      if (node = group[i]) {\n        sortgroup[i] = node;\n      }\n    }\n    sortgroup.sort(compareNode);\n  }\n\n  return new Selection(sortgroups, this._parents).order();\n}\n\nfunction ascending(a, b) {\n  return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;\n}\n","export default function() {\n  var callback = arguments[0];\n  arguments[0] = this;\n  callback.apply(null, arguments);\n  return this;\n}\n","export default function() {\n  var nodes = new Array(this.size()), i = -1;\n  this.each(function() { nodes[++i] = this; });\n  return nodes;\n}\n","export default function() {\n\n  for (var groups = this._groups, j = 0, m = groups.length; j < m; ++j) {\n    for (var group = groups[j], i = 0, n = group.length; i < n; ++i) {\n      var node = group[i];\n      if (node) return node;\n    }\n  }\n\n  return null;\n}\n","export default function() {\n  var size = 0;\n  this.each(function() { ++size; });\n  return size;\n}\n","export default function() {\n  return !this.node();\n}\n","export default function(callback) {\n\n  for (var groups = this._groups, j = 0, m = groups.length; j < m; ++j) {\n    for (var group = groups[j], i = 0, n = group.length, node; i < n; ++i) {\n      if (node = group[i]) callback.call(node, node.__data__, i, group);\n    }\n  }\n\n  return this;\n}\n","export var xhtml = \"http://www.w3.org/1999/xhtml\";\n\nexport default {\n  svg: \"http://www.w3.org/2000/svg\",\n  xhtml: xhtml,\n  xlink: \"http://www.w3.org/1999/xlink\",\n  xml: \"http://www.w3.org/XML/1998/namespace\",\n  xmlns: \"http://www.w3.org/2000/xmlns/\"\n};\n","import namespaces from \"./namespaces\";\n\nexport default function(name) {\n  var prefix = name += \"\", i = prefix.indexOf(\":\");\n  if (i >= 0 && (prefix = name.slice(0, i)) !== \"xmlns\") name = name.slice(i + 1);\n  return namespaces.hasOwnProperty(prefix) ? {space: namespaces[prefix], local: name} : name;\n}\n","import namespace from \"../namespace\";\n\nfunction attrRemove(name) {\n  return function() {\n    this.removeAttribute(name);\n  };\n}\n\nfunction attrRemoveNS(fullname) {\n  return function() {\n    this.removeAttributeNS(fullname.space, fullname.local);\n  };\n}\n\nfunction attrConstant(name, value) {\n  return function() {\n    this.setAttribute(name, value);\n  };\n}\n\nfunction attrConstantNS(fullname, value) {\n  return function() {\n    this.setAttributeNS(fullname.space, fullname.local, value);\n  };\n}\n\nfunction attrFunction(name, value) {\n  return function() {\n    var v = value.apply(this, arguments);\n    if (v == null) this.removeAttribute(name);\n    else this.setAttribute(name, v);\n  };\n}\n\nfunction attrFunctionNS(fullname, value) {\n  return function() {\n    var v = value.apply(this, arguments);\n    if (v == null) this.removeAttributeNS(fullname.space, fullname.local);\n    else this.setAttributeNS(fullname.space, fullname.local, v);\n  };\n}\n\nexport default function(name, value) {\n  var fullname = namespace(name);\n\n  if (arguments.length < 2) {\n    var node = this.node();\n    return fullname.local\n        ? node.getAttributeNS(fullname.space, fullname.local)\n        : node.getAttribute(fullname);\n  }\n\n  return this.each((value == null\n      ? (fullname.local ? attrRemoveNS : attrRemove) : (typeof value === \"function\"\n      ? (fullname.local ? attrFunctionNS : attrFunction)\n      : (fullname.local ? attrConstantNS : attrConstant)))(fullname, value));\n}\n","export default function(node) {\n  return (node.ownerDocument && node.ownerDocument.defaultView) // node is a Node\n      || (node.document && node) // node is a Window\n      || node.defaultView; // node is a Document\n}\n","import defaultView from \"../window\";\n\nfunction styleRemove(name) {\n  return function() {\n    this.style.removeProperty(name);\n  };\n}\n\nfunction styleConstant(name, value, priority) {\n  return function() {\n    this.style.setProperty(name, value, priority);\n  };\n}\n\nfunction styleFunction(name, value, priority) {\n  return function() {\n    var v = value.apply(this, arguments);\n    if (v == null) this.style.removeProperty(name);\n    else this.style.setProperty(name, v, priority);\n  };\n}\n\nexport default function(name, value, priority) {\n  return arguments.length > 1\n      ? this.each((value == null\n            ? styleRemove : typeof value === \"function\"\n            ? styleFunction\n            : styleConstant)(name, value, priority == null ? \"\" : priority))\n      : styleValue(this.node(), name);\n}\n\nexport function styleValue(node, name) {\n  return node.style.getPropertyValue(name)\n      || defaultView(node).getComputedStyle(node, null).getPropertyValue(name);\n}\n","function propertyRemove(name) {\n  return function() {\n    delete this[name];\n  };\n}\n\nfunction propertyConstant(name, value) {\n  return function() {\n    this[name] = value;\n  };\n}\n\nfunction propertyFunction(name, value) {\n  return function() {\n    var v = value.apply(this, arguments);\n    if (v == null) delete this[name];\n    else this[name] = v;\n  };\n}\n\nexport default function(name, value) {\n  return arguments.length > 1\n      ? this.each((value == null\n          ? propertyRemove : typeof value === \"function\"\n          ? propertyFunction\n          : propertyConstant)(name, value))\n      : this.node()[name];\n}\n","function classArray(string) {\n  return string.trim().split(/^|\\s+/);\n}\n\nfunction classList(node) {\n  return node.classList || new ClassList(node);\n}\n\nfunction ClassList(node) {\n  this._node = node;\n  this._names = classArray(node.getAttribute(\"class\") || \"\");\n}\n\nClassList.prototype = {\n  add: function(name) {\n    var i = this._names.indexOf(name);\n    if (i < 0) {\n      this._names.push(name);\n      this._node.setAttribute(\"class\", this._names.join(\" \"));\n    }\n  },\n  remove: function(name) {\n    var i = this._names.indexOf(name);\n    if (i >= 0) {\n      this._names.splice(i, 1);\n      this._node.setAttribute(\"class\", this._names.join(\" \"));\n    }\n  },\n  contains: function(name) {\n    return this._names.indexOf(name) >= 0;\n  }\n};\n\nfunction classedAdd(node, names) {\n  var list = classList(node), i = -1, n = names.length;\n  while (++i < n) list.add(names[i]);\n}\n\nfunction classedRemove(node, names) {\n  var list = classList(node), i = -1, n = names.length;\n  while (++i < n) list.remove(names[i]);\n}\n\nfunction classedTrue(names) {\n  return function() {\n    classedAdd(this, names);\n  };\n}\n\nfunction classedFalse(names) {\n  return function() {\n    classedRemove(this, names);\n  };\n}\n\nfunction classedFunction(names, value) {\n  return function() {\n    (value.apply(this, arguments) ? classedAdd : classedRemove)(this, names);\n  };\n}\n\nexport default function(name, value) {\n  var names = classArray(name + \"\");\n\n  if (arguments.length < 2) {\n    var list = classList(this.node()), i = -1, n = names.length;\n    while (++i < n) if (!list.contains(names[i])) return false;\n    return true;\n  }\n\n  return this.each((typeof value === \"function\"\n      ? classedFunction : value\n      ? classedTrue\n      : classedFalse)(names, value));\n}\n","function textRemove() {\n  this.textContent = \"\";\n}\n\nfunction textConstant(value) {\n  return function() {\n    this.textContent = value;\n  };\n}\n\nfunction textFunction(value) {\n  return function() {\n    var v = value.apply(this, arguments);\n    this.textContent = v == null ? \"\" : v;\n  };\n}\n\nexport default function(value) {\n  return arguments.length\n      ? this.each(value == null\n          ? textRemove : (typeof value === \"function\"\n          ? textFunction\n          : textConstant)(value))\n      : this.node().textContent;\n}\n","function htmlRemove() {\n  this.innerHTML = \"\";\n}\n\nfunction htmlConstant(value) {\n  return function() {\n    this.innerHTML = value;\n  };\n}\n\nfunction htmlFunction(value) {\n  return function() {\n    var v = value.apply(this, arguments);\n    this.innerHTML = v == null ? \"\" : v;\n  };\n}\n\nexport default function(value) {\n  return arguments.length\n      ? this.each(value == null\n          ? htmlRemove : (typeof value === \"function\"\n          ? htmlFunction\n          : htmlConstant)(value))\n      : this.node().innerHTML;\n}\n","function raise() {\n  if (this.nextSibling) this.parentNode.appendChild(this);\n}\n\nexport default function() {\n  return this.each(raise);\n}\n","function lower() {\n  if (this.previousSibling) this.parentNode.insertBefore(this, this.parentNode.firstChild);\n}\n\nexport default function() {\n  return this.each(lower);\n}\n","import namespace from \"./namespace\";\nimport {xhtml} from \"./namespaces\";\n\nfunction creatorInherit(name) {\n  return function() {\n    var document = this.ownerDocument,\n        uri = this.namespaceURI;\n    return uri === xhtml && document.documentElement.namespaceURI === xhtml\n        ? document.createElement(name)\n        : document.createElementNS(uri, name);\n  };\n}\n\nfunction creatorFixed(fullname) {\n  return function() {\n    return this.ownerDocument.createElementNS(fullname.space, fullname.local);\n  };\n}\n\nexport default function(name) {\n  var fullname = namespace(name);\n  return (fullname.local\n      ? creatorFixed\n      : creatorInherit)(fullname);\n}\n","import creator from \"../creator\";\n\nexport default function(name) {\n  var create = typeof name === \"function\" ? name : creator(name);\n  return this.select(function() {\n    return this.appendChild(create.apply(this, arguments));\n  });\n}\n","import creator from \"../creator\";\nimport selector from \"../selector\";\n\nfunction constantNull() {\n  return null;\n}\n\nexport default function(name, before) {\n  var create = typeof name === \"function\" ? name : creator(name),\n      select = before == null ? constantNull : typeof before === \"function\" ? before : selector(before);\n  return this.select(function() {\n    return this.insertBefore(create.apply(this, arguments), select.apply(this, arguments) || null);\n  });\n}\n","function remove() {\n  var parent = this.parentNode;\n  if (parent) parent.removeChild(this);\n}\n\nexport default function() {\n  return this.each(remove);\n}\n","function selection_cloneShallow() {\n  var clone = this.cloneNode(false), parent = this.parentNode;\n  return parent ? parent.insertBefore(clone, this.nextSibling) : clone;\n}\n\nfunction selection_cloneDeep() {\n  var clone = this.cloneNode(true), parent = this.parentNode;\n  return parent ? parent.insertBefore(clone, this.nextSibling) : clone;\n}\n\nexport default function(deep) {\n  return this.select(deep ? selection_cloneDeep : selection_cloneShallow);\n}\n","export default function(value) {\n  return arguments.length\n      ? this.property(\"__data__\", value)\n      : this.node().__data__;\n}\n","var filterEvents = {};\n\nexport var event = null;\n\nif (typeof document !== \"undefined\") {\n  var element = document.documentElement;\n  if (!(\"onmouseenter\" in element)) {\n    filterEvents = {mouseenter: \"mouseover\", mouseleave: \"mouseout\"};\n  }\n}\n\nfunction filterContextListener(listener, index, group) {\n  listener = contextListener(listener, index, group);\n  return function(event) {\n    var related = event.relatedTarget;\n    if (!related || (related !== this && !(related.compareDocumentPosition(this) & 8))) {\n      listener.call(this, event);\n    }\n  };\n}\n\nfunction contextListener(listener, index, group) {\n  return function(event1) {\n    var event0 = event; // Events can be reentrant (e.g., focus).\n    event = event1;\n    try {\n      listener.call(this, this.__data__, index, group);\n    } finally {\n      event = event0;\n    }\n  };\n}\n\nfunction parseTypenames(typenames) {\n  return typenames.trim().split(/^|\\s+/).map(function(t) {\n    var name = \"\", i = t.indexOf(\".\");\n    if (i >= 0) name = t.slice(i + 1), t = t.slice(0, i);\n    return {type: t, name: name};\n  });\n}\n\nfunction onRemove(typename) {\n  return function() {\n    var on = this.__on;\n    if (!on) return;\n    for (var j = 0, i = -1, m = on.length, o; j < m; ++j) {\n      if (o = on[j], (!typename.type || o.type === typename.type) && o.name === typename.name) {\n        this.removeEventListener(o.type, o.listener, o.capture);\n      } else {\n        on[++i] = o;\n      }\n    }\n    if (++i) on.length = i;\n    else delete this.__on;\n  };\n}\n\nfunction onAdd(typename, value, capture) {\n  var wrap = filterEvents.hasOwnProperty(typename.type) ? filterContextListener : contextListener;\n  return function(d, i, group) {\n    var on = this.__on, o, listener = wrap(value, i, group);\n    if (on) for (var j = 0, m = on.length; j < m; ++j) {\n      if ((o = on[j]).type === typename.type && o.name === typename.name) {\n        this.removeEventListener(o.type, o.listener, o.capture);\n        this.addEventListener(o.type, o.listener = listener, o.capture = capture);\n        o.value = value;\n        return;\n      }\n    }\n    this.addEventListener(typename.type, listener, capture);\n    o = {type: typename.type, name: typename.name, value: value, listener: listener, capture: capture};\n    if (!on) this.__on = [o];\n    else on.push(o);\n  };\n}\n\nexport default function(typename, value, capture) {\n  var typenames = parseTypenames(typename + \"\"), i, n = typenames.length, t;\n\n  if (arguments.length < 2) {\n    var on = this.node().__on;\n    if (on) for (var j = 0, m = on.length, o; j < m; ++j) {\n      for (i = 0, o = on[j]; i < n; ++i) {\n        if ((t = typenames[i]).type === o.type && t.name === o.name) {\n          return o.value;\n        }\n      }\n    }\n    return;\n  }\n\n  on = value ? onAdd : onRemove;\n  if (capture == null) capture = false;\n  for (i = 0; i < n; ++i) this.each(on(typenames[i], value, capture));\n  return this;\n}\n\nexport function customEvent(event1, listener, that, args) {\n  var event0 = event;\n  event1.sourceEvent = event;\n  event = event1;\n  try {\n    return listener.apply(that, args);\n  } finally {\n    event = event0;\n  }\n}\n","import defaultView from \"../window\";\n\nfunction dispatchEvent(node, type, params) {\n  var window = defaultView(node),\n      event = window.CustomEvent;\n\n  if (typeof event === \"function\") {\n    event = new event(type, params);\n  } else {\n    event = window.document.createEvent(\"Event\");\n    if (params) event.initEvent(type, params.bubbles, params.cancelable), event.detail = params.detail;\n    else event.initEvent(type, false, false);\n  }\n\n  node.dispatchEvent(event);\n}\n\nfunction dispatchConstant(type, params) {\n  return function() {\n    return dispatchEvent(this, type, params);\n  };\n}\n\nfunction dispatchFunction(type, params) {\n  return function() {\n    return dispatchEvent(this, type, params.apply(this, arguments));\n  };\n}\n\nexport default function(type, params) {\n  return this.each((typeof params === \"function\"\n      ? dispatchFunction\n      : dispatchConstant)(type, params));\n}\n","import selection_select from \"./select\";\nimport selection_selectAll from \"./selectAll\";\nimport selection_filter from \"./filter\";\nimport selection_data from \"./data\";\nimport selection_enter from \"./enter\";\nimport selection_exit from \"./exit\";\nimport selection_join from \"./join\";\nimport selection_merge from \"./merge\";\nimport selection_order from \"./order\";\nimport selection_sort from \"./sort\";\nimport selection_call from \"./call\";\nimport selection_nodes from \"./nodes\";\nimport selection_node from \"./node\";\nimport selection_size from \"./size\";\nimport selection_empty from \"./empty\";\nimport selection_each from \"./each\";\nimport selection_attr from \"./attr\";\nimport selection_style from \"./style\";\nimport selection_property from \"./property\";\nimport selection_classed from \"./classed\";\nimport selection_text from \"./text\";\nimport selection_html from \"./html\";\nimport selection_raise from \"./raise\";\nimport selection_lower from \"./lower\";\nimport selection_append from \"./append\";\nimport selection_insert from \"./insert\";\nimport selection_remove from \"./remove\";\nimport selection_clone from \"./clone\";\nimport selection_datum from \"./datum\";\nimport selection_on from \"./on\";\nimport selection_dispatch from \"./dispatch\";\n\nexport var root = [null];\n\nexport function Selection(groups, parents) {\n  this._groups = groups;\n  this._parents = parents;\n}\n\nfunction selection() {\n  return new Selection([[document.documentElement]], root);\n}\n\nSelection.prototype = selection.prototype = {\n  constructor: Selection,\n  select: selection_select,\n  selectAll: selection_selectAll,\n  filter: selection_filter,\n  data: selection_data,\n  enter: selection_enter,\n  exit: selection_exit,\n  join: selection_join,\n  merge: selection_merge,\n  order: selection_order,\n  sort: selection_sort,\n  call: selection_call,\n  nodes: selection_nodes,\n  node: selection_node,\n  size: selection_size,\n  empty: selection_empty,\n  each: selection_each,\n  attr: selection_attr,\n  style: selection_style,\n  property: selection_property,\n  classed: selection_classed,\n  text: selection_text,\n  html: selection_html,\n  raise: selection_raise,\n  lower: selection_lower,\n  append: selection_append,\n  insert: selection_insert,\n  remove: selection_remove,\n  clone: selection_clone,\n  datum: selection_datum,\n  on: selection_on,\n  dispatch: selection_dispatch\n};\n\nexport default selection;\n","import {Selection, root} from \"./selection/index\";\n\nexport default function(selector) {\n  return typeof selector === \"string\"\n      ? new Selection([[document.querySelector(selector)]], [document.documentElement])\n      : new Selection([[selector]], root);\n}\n","import {path} from \"d3-path\";\nimport constant from \"./constant.js\";\nimport curveLinear from \"./curve/linear.js\";\nimport line from \"./line.js\";\nimport {x as pointX, y as pointY} from \"./point.js\";\n\nexport default function() {\n  var x0 = pointX,\n      x1 = null,\n      y0 = constant(0),\n      y1 = pointY,\n      defined = constant(true),\n      context = null,\n      curve = curveLinear,\n      output = null;\n\n  function area(data) {\n    var i,\n        j,\n        k,\n        n = data.length,\n        d,\n        defined0 = false,\n        buffer,\n        x0z = new Array(n),\n        y0z = new Array(n);\n\n    if (context == null) output = curve(buffer = path());\n\n    for (i = 0; i <= n; ++i) {\n      if (!(i < n && defined(d = data[i], i, data)) === defined0) {\n        if (defined0 = !defined0) {\n          j = i;\n          output.areaStart();\n          output.lineStart();\n        } else {\n          output.lineEnd();\n          output.lineStart();\n          for (k = i - 1; k >= j; --k) {\n            output.point(x0z[k], y0z[k]);\n          }\n          output.lineEnd();\n          output.areaEnd();\n        }\n      }\n      if (defined0) {\n        x0z[i] = +x0(d, i, data), y0z[i] = +y0(d, i, data);\n        output.point(x1 ? +x1(d, i, data) : x0z[i], y1 ? +y1(d, i, data) : y0z[i]);\n      }\n    }\n\n    if (buffer) return output = null, buffer + \"\" || null;\n  }\n\n  function arealine() {\n    return line().defined(defined).curve(curve).context(context);\n  }\n\n  area.x = function(_) {\n    return arguments.length ? (x0 = typeof _ === \"function\" ? _ : constant(+_), x1 = null, area) : x0;\n  };\n\n  area.x0 = function(_) {\n    return arguments.length ? (x0 = typeof _ === \"function\" ? _ : constant(+_), area) : x0;\n  };\n\n  area.x1 = function(_) {\n    return arguments.length ? (x1 = _ == null ? null : typeof _ === \"function\" ? _ : constant(+_), area) : x1;\n  };\n\n  area.y = function(_) {\n    return arguments.length ? (y0 = typeof _ === \"function\" ? _ : constant(+_), y1 = null, area) : y0;\n  };\n\n  area.y0 = function(_) {\n    return arguments.length ? (y0 = typeof _ === \"function\" ? _ : constant(+_), area) : y0;\n  };\n\n  area.y1 = function(_) {\n    return arguments.length ? (y1 = _ == null ? null : typeof _ === \"function\" ? _ : constant(+_), area) : y1;\n  };\n\n  area.lineX0 =\n  area.lineY0 = function() {\n    return arealine().x(x0).y(y0);\n  };\n\n  area.lineY1 = function() {\n    return arealine().x(x0).y(y1);\n  };\n\n  area.lineX1 = function() {\n    return arealine().x(x1).y(y0);\n  };\n\n  area.defined = function(_) {\n    return arguments.length ? (defined = typeof _ === \"function\" ? _ : constant(!!_), area) : defined;\n  };\n\n  area.curve = function(_) {\n    return arguments.length ? (curve = _, context != null && (output = curve(context)), area) : curve;\n  };\n\n  area.context = function(_) {\n    return arguments.length ? (_ == null ? context = output = null : output = curve(context = _), area) : context;\n  };\n\n  return area;\n}\n","export default function(x) {\n  return function constant() {\n    return x;\n  };\n}\n","function Linear(context) {\n  this._context = context;\n}\n\nLinear.prototype = {\n  areaStart: function() {\n    this._line = 0;\n  },\n  areaEnd: function() {\n    this._line = NaN;\n  },\n  lineStart: function() {\n    this._point = 0;\n  },\n  lineEnd: function() {\n    if (this._line || (this._line !== 0 && this._point === 1)) this._context.closePath();\n    this._line = 1 - this._line;\n  },\n  point: function(x, y) {\n    x = +x, y = +y;\n    switch (this._point) {\n      case 0: this._point = 1; this._line ? this._context.lineTo(x, y) : this._context.moveTo(x, y); break;\n      case 1: this._point = 2; // proceed\n      default: this._context.lineTo(x, y); break;\n    }\n  }\n};\n\nexport default function(context) {\n  return new Linear(context);\n}\n","import {path} from \"d3-path\";\nimport constant from \"./constant.js\";\nimport curveLinear from \"./curve/linear.js\";\nimport {x as pointX, y as pointY} from \"./point.js\";\n\nexport default function() {\n  var x = pointX,\n      y = pointY,\n      defined = constant(true),\n      context = null,\n      curve = curveLinear,\n      output = null;\n\n  function line(data) {\n    var i,\n        n = data.length,\n        d,\n        defined0 = false,\n        buffer;\n\n    if (context == null) output = curve(buffer = path());\n\n    for (i = 0; i <= n; ++i) {\n      if (!(i < n && defined(d = data[i], i, data)) === defined0) {\n        if (defined0 = !defined0) output.lineStart();\n        else output.lineEnd();\n      }\n      if (defined0) output.point(+x(d, i, data), +y(d, i, data));\n    }\n\n    if (buffer) return output = null, buffer + \"\" || null;\n  }\n\n  line.x = function(_) {\n    return arguments.length ? (x = typeof _ === \"function\" ? _ : constant(+_), line) : x;\n  };\n\n  line.y = function(_) {\n    return arguments.length ? (y = typeof _ === \"function\" ? _ : constant(+_), line) : y;\n  };\n\n  line.defined = function(_) {\n    return arguments.length ? (defined = typeof _ === \"function\" ? _ : constant(!!_), line) : defined;\n  };\n\n  line.curve = function(_) {\n    return arguments.length ? (curve = _, context != null && (output = curve(context)), line) : curve;\n  };\n\n  line.context = function(_) {\n    return arguments.length ? (_ == null ? context = output = null : output = curve(context = _), line) : context;\n  };\n\n  return line;\n}\n","export function x(p) {\n  return p[0];\n}\n\nexport function y(p) {\n  return p[1];\n}\n"],"names":[],"sourceRoot":""}