vue-chartjs/dist/vue-chartjs.js

/*!
 * vue-chartjs v3.0.2
 * (c) 2017 Jakub Juszczak <jakub@posteo.de>
 * http://vue-chartjs.org
 */
(function webpackUniversalModuleDefinition(root, factory) {
	if(typeof exports === 'object' && typeof module === 'object')
		module.exports = factory(require("chart.js"));
	else if(typeof define === 'function' && define.amd)
		define("VueChartJs", ["chart.js"], factory);
	else if(typeof exports === 'object')
		exports["VueChartJs"] = factory(require("chart.js"));
	else
		root["VueChartJs"] = factory(root["Chart"]);
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/* 0 */
/***/ (function(module, exports) {

module.exports = __WEBPACK_EXTERNAL_MODULE_0__;

/***/ }),
/* 1 */
/***/ (function(module, __webpack_exports__, __webpack_require__) {

"use strict";
Object.defineProperty(__webpack_exports__, "__esModule", { value: true });

// EXTERNAL MODULE: external {"root":"Chart","commonjs":"chart.js","commonjs2":"chart.js","amd":"chart.js"}
var external___root___Chart___commonjs___chart_js___commonjs2___chart_js___amd___chart_js__ = __webpack_require__(0);
var external___root___Chart___commonjs___chart_js___commonjs2___chart_js___amd___chart_js___default = /*#__PURE__*/__webpack_require__.n(external___root___Chart___commonjs___chart_js___commonjs2___chart_js___amd___chart_js__);

// EXTERNAL MODULE: ./node_modules/lodash.merge/index.js
var lodash_merge = __webpack_require__(2);
var lodash_merge_default = /*#__PURE__*/__webpack_require__.n(lodash_merge);

// CONCATENATED MODULE: ./src/helpers/options.js

function mergeOptions(obj, src) {
  return lodash_merge_default()(obj, src);
}
// CONCATENATED MODULE: ./src/BaseCharts/Bar.js


/* harmony default export */ var Bar = ({
  render: function render(createElement) {
    return createElement('div', {
      style: this.styles,
      class: this.cssClasses
    }, [createElement('canvas', {
      attrs: {
        id: this.chartId,
        width: this.width,
        height: this.height
      },
      ref: 'canvas'
    })]);
  },
  props: {
    chartId: {
      default: 'bar-chart',
      type: String
    },
    width: {
      default: 400,
      type: Number
    },
    height: {
      default: 400,
      type: Number
    },
    cssClasses: {
      type: String,
      default: ''
    },
    styles: {
      type: Object
    }
  },
  data: function data() {
    return {
      _chart: null,
      defaultOptions: {
        scales: {
          yAxes: [{
            ticks: {
              beginAtZero: true
            },
            gridLines: {
              display: false
            }
          }],
          xAxes: [{
            gridLines: {
              display: false
            },
            categoryPercentage: 0.5,
            barPercentage: 0.2
          }]
        }
      },
      plugins: []
    };
  },
  methods: {
    addPlugin: function addPlugin(plugin) {
      this.plugins.push(plugin);
    },
    renderChart: function renderChart(data, options) {
      var chartOptions = mergeOptions(this.defaultOptions, options);
      this.$data._chart = new external___root___Chart___commonjs___chart_js___commonjs2___chart_js___amd___chart_js___default.a(this.$refs.canvas.getContext('2d'), {
        type: 'bar',
        data: data,
        options: chartOptions,
        plugins: this.plugins
      });
    }
  },
  beforeDestroy: function beforeDestroy() {
    if (this.$data._chart) {
      this.$data._chart.destroy();
    }
  }
});
// CONCATENATED MODULE: ./src/BaseCharts/HorizontalBar.js


/* harmony default export */ var HorizontalBar = ({
  render: function render(createElement) {
    return createElement('div', {
      style: this.styles,
      class: this.cssClasses
    }, [createElement('canvas', {
      attrs: {
        id: this.chartId,
        width: this.width,
        height: this.height
      },
      ref: 'canvas'
    })]);
  },
  props: {
    chartId: {
      default: 'horizontalbar-chart',
      type: String
    },
    width: {
      default: 400,
      type: Number
    },
    height: {
      default: 400,
      type: Number
    },
    cssClasses: {
      type: String,
      default: ''
    },
    styles: {
      type: Object
    }
  },
  data: function data() {
    return {
      _chart: null,
      defaultOptions: {
        scales: {
          yAxes: [{
            ticks: {
              beginAtZero: true
            },
            gridLines: {
              display: false
            }
          }],
          xAxes: [{
            gridLines: {
              display: false
            },
            categoryPercentage: 0.5,
            barPercentage: 0.2
          }]
        }
      },
      plugins: []
    };
  },
  methods: {
    addPlugin: function addPlugin(plugin) {
      this.plugins.push(plugin);
    },
    renderChart: function renderChart(data, options, type) {
      var chartOptions = mergeOptions(this.defaultOptions, options);
      this.$data._chart = new external___root___Chart___commonjs___chart_js___commonjs2___chart_js___amd___chart_js___default.a(this.$refs.canvas.getContext('2d'), {
        type: 'horizontalBar',
        data: data,
        options: chartOptions,
        plugins: this.plugins
      });
    }
  },
  beforeDestroy: function beforeDestroy() {
    if (this.$data._chart) {
      this.$data._chart.destroy();
    }
  }
});
// CONCATENATED MODULE: ./src/BaseCharts/Doughnut.js


/* harmony default export */ var Doughnut = ({
  render: function render(createElement) {
    return createElement('div', {
      style: this.styles,
      class: this.cssClasses
    }, [createElement('canvas', {
      attrs: {
        id: this.chartId,
        width: this.width,
        height: this.height
      },
      ref: 'canvas'
    })]);
  },
  props: {
    chartId: {
      default: 'doughnut-chart',
      type: String
    },
    width: {
      default: 400,
      type: Number
    },
    height: {
      default: 400,
      type: Number
    },
    cssClasses: {
      type: String,
      default: ''
    },
    styles: {
      type: Object
    }
  },
  data: function data() {
    return {
      _chart: null,
      defaultOptions: {},
      plugins: []
    };
  },
  methods: {
    addPlugin: function addPlugin(plugin) {
      this.plugins.push(plugin);
    },
    renderChart: function renderChart(data, options) {
      var chartOptions = mergeOptions(this.defaultOptions, options);
      this.$data._chart = new external___root___Chart___commonjs___chart_js___commonjs2___chart_js___amd___chart_js___default.a(this.$refs.canvas.getContext('2d'), {
        type: 'doughnut',
        data: data,
        options: chartOptions,
        plugins: this.plugins
      });
    }
  },
  beforeDestroy: function beforeDestroy() {
    if (this.$data._chart) {
      this.$data._chart.destroy();
    }
  }
});
// CONCATENATED MODULE: ./src/BaseCharts/Line.js


/* harmony default export */ var Line = ({
  render: function render(createElement) {
    return createElement('div', {
      style: this.styles,
      class: this.cssClasses
    }, [createElement('canvas', {
      attrs: {
        id: this.chartId,
        width: this.width,
        height: this.height
      },
      ref: 'canvas'
    })]);
  },
  props: {
    chartId: {
      default: 'line-chart',
      type: String
    },
    width: {
      default: 400,
      type: Number
    },
    height: {
      default: 400,
      type: Number
    },
    cssClasses: {
      type: String,
      default: ''
    },
    styles: {
      type: Object
    }
  },
  data: function data() {
    return {
      _chart: null,
      defaultOptions: {
        scales: {
          yAxes: [{
            ticks: {
              beginAtZero: true
            },
            gridLines: {
              display: false
            }
          }],
          xAxes: [{
            gridLines: {
              display: false
            }
          }]
        }
      },
      plugins: []
    };
  },
  methods: {
    addPlugin: function addPlugin(plugin) {
      this.plugins.push(plugin);
    },
    renderChart: function renderChart(data, options) {
      var chartOptions = mergeOptions(this.defaultOptions, options);
      this.$data._chart = new external___root___Chart___commonjs___chart_js___commonjs2___chart_js___amd___chart_js___default.a(this.$refs.canvas.getContext('2d'), {
        type: 'line',
        data: data,
        options: chartOptions,
        plugins: this.plugins
      });
    }
  },
  beforeDestroy: function beforeDestroy() {
    if (this.$data._chart) {
      this.$data._chart.destroy();
    }
  }
});
// CONCATENATED MODULE: ./src/BaseCharts/Pie.js


/* harmony default export */ var Pie = ({
  render: function render(createElement) {
    return createElement('div', {
      style: this.styles,
      class: this.cssClasses
    }, [createElement('canvas', {
      attrs: {
        id: this.chartId,
        width: this.width,
        height: this.height
      },
      ref: 'canvas'
    })]);
  },
  props: {
    chartId: {
      default: 'pie-chart',
      type: String
    },
    width: {
      default: 400,
      type: Number
    },
    height: {
      default: 400,
      type: Number
    },
    cssClasses: {
      type: String,
      default: ''
    },
    styles: {
      type: Object
    }
  },
  data: function data() {
    return {
      _chart: null,
      defaultOptions: {},
      plugins: []
    };
  },
  methods: {
    addPlugin: function addPlugin(plugin) {
      this.plugins.push(plugin);
    },
    renderChart: function renderChart(data, options) {
      var chartOptions = mergeOptions(this.defaultOptions, options);
      this.$data._chart = new external___root___Chart___commonjs___chart_js___commonjs2___chart_js___amd___chart_js___default.a(this.$refs.canvas.getContext('2d'), {
        type: 'pie',
        data: data,
        options: chartOptions,
        plugins: this.plugins
      });
    }
  },
  beforeDestroy: function beforeDestroy() {
    if (this.$data._chart) {
      this.$data._chart.destroy();
    }
  }
});
// CONCATENATED MODULE: ./src/BaseCharts/PolarArea.js


/* harmony default export */ var PolarArea = ({
  render: function render(createElement) {
    return createElement('div', {
      style: this.styles,
      class: this.cssClasses
    }, [createElement('canvas', {
      attrs: {
        id: this.chartId,
        width: this.width,
        height: this.height
      },
      ref: 'canvas'
    })]);
  },
  props: {
    chartId: {
      default: 'polar-chart',
      type: String
    },
    width: {
      default: 400,
      type: Number
    },
    height: {
      default: 400,
      type: Number
    },
    cssClasses: {
      type: String,
      default: ''
    },
    styles: {
      type: Object
    }
  },
  data: function data() {
    return {
      _chart: null,
      defaultOptions: {},
      plugins: []
    };
  },
  methods: {
    addPlugin: function addPlugin(plugin) {
      this.plugins.push(plugin);
    },
    renderChart: function renderChart(data, options) {
      var chartOptions = mergeOptions(this.defaultOptions, options);
      this.$data._chart = new external___root___Chart___commonjs___chart_js___commonjs2___chart_js___amd___chart_js___default.a(this.$refs.canvas.getContext('2d'), {
        type: 'polarArea',
        data: data,
        options: chartOptions,
        plugins: this.plugins
      });
    }
  },
  beforeDestroy: function beforeDestroy() {
    if (this.$data._chart) {
      this.$data._chart.destroy();
    }
  }
});
// CONCATENATED MODULE: ./src/BaseCharts/Radar.js


/* harmony default export */ var Radar = ({
  render: function render(createElement) {
    return createElement('div', {
      style: this.styles,
      class: this.cssClasses
    }, [createElement('canvas', {
      attrs: {
        id: this.chartId,
        width: this.width,
        height: this.height
      },
      ref: 'canvas'
    })]);
  },
  props: {
    chartId: {
      default: 'radar-chart',
      type: String
    },
    width: {
      default: 400,
      type: Number
    },
    height: {
      default: 400,
      type: Number
    },
    cssClasses: {
      type: String,
      default: ''
    },
    styles: {
      type: Object
    }
  },
  data: function data() {
    return {
      _chart: null,
      defaultOptions: {},
      plugins: []
    };
  },
  methods: {
    addPlugin: function addPlugin(plugin) {
      this.plugins.push(plugin);
    },
    renderChart: function renderChart(data, options) {
      var chartOptions = mergeOptions(this.defaultOptions, options);
      this.$data._chart = new external___root___Chart___commonjs___chart_js___commonjs2___chart_js___amd___chart_js___default.a(this.$refs.canvas.getContext('2d'), {
        type: 'radar',
        data: data,
        options: chartOptions,
        plugins: this.plugins
      });
    }
  },
  beforeDestroy: function beforeDestroy() {
    if (this.$data._chart) {
      this.$data._chart.destroy();
    }
  }
});
// CONCATENATED MODULE: ./src/BaseCharts/Bubble.js


/* harmony default export */ var Bubble = ({
  render: function render(createElement) {
    return createElement('div', {
      style: this.styles,
      class: this.cssClasses
    }, [createElement('canvas', {
      attrs: {
        id: this.chartId,
        width: this.width,
        height: this.height
      },
      ref: 'canvas'
    })]);
  },
  props: {
    chartId: {
      default: 'bubble-chart',
      type: String
    },
    width: {
      default: 400,
      type: Number
    },
    height: {
      default: 400,
      type: Number
    },
    cssClasses: {
      type: String,
      default: ''
    },
    styles: {
      type: Object
    }
  },
  data: function data() {
    return {
      _chart: null,
      defaultOptions: {
        scales: {
          yAxes: [{
            ticks: {
              beginAtZero: true
            },
            gridLines: {
              display: false
            }
          }],
          xAxes: [{
            gridLines: {
              display: false
            },
            categoryPercentage: 0.5,
            barPercentage: 0.2
          }]
        }
      },
      plugins: []
    };
  },
  methods: {
    addPlugin: function addPlugin(plugin) {
      this.plugins.push(plugin);
    },
    renderChart: function renderChart(data, options) {
      var chartOptions = mergeOptions(this.defaultOptions, options);
      this.$data._chart = new external___root___Chart___commonjs___chart_js___commonjs2___chart_js___amd___chart_js___default.a(this.$refs.canvas.getContext('2d'), {
        type: 'bubble',
        data: data,
        options: chartOptions,
        plugins: this.plugins
      });
    }
  },
  beforeDestroy: function beforeDestroy() {
    if (this.$data._chart) {
      this.$data._chart.destroy();
    }
  }
});
// CONCATENATED MODULE: ./src/BaseCharts/Scatter.js


/* harmony default export */ var Scatter = ({
  render: function render(createElement) {
    return createElement('div', {
      style: this.styles,
      class: this.cssClasses
    }, [createElement('canvas', {
      attrs: {
        id: this.chartId,
        width: this.width,
        height: this.height
      },
      ref: 'canvas'
    })]);
  },
  props: {
    chartId: {
      default: 'scatter-chart',
      type: String
    },
    width: {
      default: 400,
      type: Number
    },
    height: {
      default: 400,
      type: Number
    },
    cssClasses: {
      type: String,
      default: ''
    },
    styles: {
      type: Object
    }
  },
  data: function data() {
    return {
      _chart: null,
      defaultOptions: {
        scales: {
          xAxes: [{
            type: 'linear',
            position: 'bottom'
          }]
        }
      },
      plugins: []
    };
  },
  methods: {
    addPlugin: function addPlugin(plugin) {
      this.plugins.push(plugin);
    },
    renderChart: function renderChart(data, options) {
      var chartOptions = mergeOptions(this.defaultOptions, options);
      this.$data._chart = new external___root___Chart___commonjs___chart_js___commonjs2___chart_js___amd___chart_js___default.a(this.$refs.canvas.getContext('2d'), {
        type: 'scatter',
        data: data,
        options: chartOptions,
        plugins: this.plugins
      });
    }
  },
  beforeDestroy: function beforeDestroy() {
    if (this.$data._chart) {
      this.$data._chart.destroy();
    }
  }
});
// EXTERNAL MODULE: ./src/mixins/reactiveData.js
var reactiveData = __webpack_require__(5);
var reactiveData_default = /*#__PURE__*/__webpack_require__.n(reactiveData);

// EXTERNAL MODULE: ./src/mixins/reactiveProp.js
var reactiveProp = __webpack_require__(6);
var reactiveProp_default = /*#__PURE__*/__webpack_require__.n(reactiveProp);

// CONCATENATED MODULE: ./src/mixins/index.js


/* harmony default export */ var mixins = ({
  reactiveData: reactiveData_default.a,
  reactiveProp: reactiveProp_default.a
});
// EXTERNAL MODULE: ./package.json
var package_0 = __webpack_require__(7);
var package_default = /*#__PURE__*/__webpack_require__.n(package_0);

// CONCATENATED MODULE: ./src/index.js
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "VueCharts", function() { return VueCharts; });
/* concated harmony reexport */__webpack_require__.d(__webpack_exports__, "Bar", function() { return Bar; });
/* concated harmony reexport */__webpack_require__.d(__webpack_exports__, "HorizontalBar", function() { return HorizontalBar; });
/* concated harmony reexport */__webpack_require__.d(__webpack_exports__, "Doughnut", function() { return Doughnut; });
/* concated harmony reexport */__webpack_require__.d(__webpack_exports__, "Line", function() { return Line; });
/* concated harmony reexport */__webpack_require__.d(__webpack_exports__, "Pie", function() { return Pie; });
/* concated harmony reexport */__webpack_require__.d(__webpack_exports__, "PolarArea", function() { return PolarArea; });
/* concated harmony reexport */__webpack_require__.d(__webpack_exports__, "Radar", function() { return Radar; });
/* concated harmony reexport */__webpack_require__.d(__webpack_exports__, "Bubble", function() { return Bubble; });
/* concated harmony reexport */__webpack_require__.d(__webpack_exports__, "Scatter", function() { return Scatter; });
/* concated harmony reexport */__webpack_require__.d(__webpack_exports__, "mixins", function() { return mixins; });











var VueCharts = {
  version: package_default.a.version,
  Bar: Bar,
  HorizontalBar: HorizontalBar,
  Doughnut: Doughnut,
  Line: Line,
  Pie: Pie,
  PolarArea: PolarArea,
  Radar: Radar,
  Bubble: Bubble,
  Scatter: Scatter,
  mixins: mixins
};
/* harmony default export */ var src_0 = __webpack_exports__["default"] = (VueCharts);


/***/ }),
/* 2 */
/***/ (function(module, exports, __webpack_require__) {

/* WEBPACK VAR INJECTION */(function(global, module) {/**
 * lodash (Custom Build) <https://lodash.com/>
 * Build: `lodash modularize exports="npm" -o ./`
 * Copyright jQuery Foundation and other contributors <https://jquery.org/>
 * Released under MIT license <https://lodash.com/license>
 * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
 * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 */

/** Used as the size to enable large array optimizations. */
var LARGE_ARRAY_SIZE = 200;

/** Used to stand-in for `undefined` hash values. */
var HASH_UNDEFINED = '__lodash_hash_undefined__';

/** Used as references for various `Number` constants. */
var MAX_SAFE_INTEGER = 9007199254740991;

/** `Object#toString` result references. */
var argsTag = '[object Arguments]',
    arrayTag = '[object Array]',
    boolTag = '[object Boolean]',
    dateTag = '[object Date]',
    errorTag = '[object Error]',
    funcTag = '[object Function]',
    genTag = '[object GeneratorFunction]',
    mapTag = '[object Map]',
    numberTag = '[object Number]',
    objectTag = '[object Object]',
    promiseTag = '[object Promise]',
    regexpTag = '[object RegExp]',
    setTag = '[object Set]',
    stringTag = '[object String]',
    symbolTag = '[object Symbol]',
    weakMapTag = '[object WeakMap]';

var arrayBufferTag = '[object ArrayBuffer]',
    dataViewTag = '[object DataView]',
    float32Tag = '[object Float32Array]',
    float64Tag = '[object Float64Array]',
    int8Tag = '[object Int8Array]',
    int16Tag = '[object Int16Array]',
    int32Tag = '[object Int32Array]',
    uint8Tag = '[object Uint8Array]',
    uint8ClampedTag = '[object Uint8ClampedArray]',
    uint16Tag = '[object Uint16Array]',
    uint32Tag = '[object Uint32Array]';

/**
 * Used to match `RegExp`
 * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).
 */
var reRegExpChar = /[\\^$.*+?()[\]{}|]/g;

/** Used to match `RegExp` flags from their coerced string values. */
var reFlags = /\w*$/;

/** Used to detect host constructors (Safari). */
var reIsHostCtor = /^\[object .+?Constructor\]$/;

/** Used to detect unsigned integer values. */
var reIsUint = /^(?:0|[1-9]\d*)$/;

/** Used to identify `toStringTag` values of typed arrays. */
var typedArrayTags = {};
typedArrayTags[float32Tag] = typedArrayTags[float64Tag] =
typedArrayTags[int8Tag] = typedArrayTags[int16Tag] =
typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =
typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =
typedArrayTags[uint32Tag] = true;
typedArrayTags[argsTag] = typedArrayTags[arrayTag] =
typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =
typedArrayTags[dataViewTag] = typedArrayTags[dateTag] =
typedArrayTags[errorTag] = typedArrayTags[funcTag] =
typedArrayTags[mapTag] = typedArrayTags[numberTag] =
typedArrayTags[objectTag] = typedArrayTags[regexpTag] =
typedArrayTags[setTag] = typedArrayTags[stringTag] =
typedArrayTags[weakMapTag] = false;

/** Used to identify `toStringTag` values supported by `_.clone`. */
var cloneableTags = {};
cloneableTags[argsTag] = cloneableTags[arrayTag] =
cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] =
cloneableTags[boolTag] = cloneableTags[dateTag] =
cloneableTags[float32Tag] = cloneableTags[float64Tag] =
cloneableTags[int8Tag] = cloneableTags[int16Tag] =
cloneableTags[int32Tag] = cloneableTags[mapTag] =
cloneableTags[numberTag] = cloneableTags[objectTag] =
cloneableTags[regexpTag] = cloneableTags[setTag] =
cloneableTags[stringTag] = cloneableTags[symbolTag] =
cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =
cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;
cloneableTags[errorTag] = cloneableTags[funcTag] =
cloneableTags[weakMapTag] = false;

/** Detect free variable `global` from Node.js. */
var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;

/** Detect free variable `self`. */
var freeSelf = typeof self == 'object' && self && self.Object === Object && self;

/** Used as a reference to the global object. */
var root = freeGlobal || freeSelf || Function('return this')();

/** Detect free variable `exports`. */
var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;

/** Detect free variable `module`. */
var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;

/** Detect the popular CommonJS extension `module.exports`. */
var moduleExports = freeModule && freeModule.exports === freeExports;

/** Detect free variable `process` from Node.js. */
var freeProcess = moduleExports && freeGlobal.process;

/** Used to access faster Node.js helpers. */
var nodeUtil = (function() {
  try {
    return freeProcess && freeProcess.binding('util');
  } catch (e) {}
}());

/* Node.js helper references. */
var nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;

/**
 * Adds the key-value `pair` to `map`.
 *
 * @private
 * @param {Object} map The map to modify.
 * @param {Array} pair The key-value pair to add.
 * @returns {Object} Returns `map`.
 */
function addMapEntry(map, pair) {
  // Don't return `map.set` because it's not chainable in IE 11.
  map.set(pair[0], pair[1]);
  return map;
}

/**
 * Adds `value` to `set`.
 *
 * @private
 * @param {Object} set The set to modify.
 * @param {*} value The value to add.
 * @returns {Object} Returns `set`.
 */
function addSetEntry(set, value) {
  // Don't return `set.add` because it's not chainable in IE 11.
  set.add(value);
  return set;
}

/**
 * A faster alternative to `Function#apply`, this function invokes `func`
 * with the `this` binding of `thisArg` and the arguments of `args`.
 *
 * @private
 * @param {Function} func The function to invoke.
 * @param {*} thisArg The `this` binding of `func`.
 * @param {Array} args The arguments to invoke `func` with.
 * @returns {*} Returns the result of `func`.
 */
function apply(func, thisArg, args) {
  switch (args.length) {
    case 0: return func.call(thisArg);
    case 1: return func.call(thisArg, args[0]);
    case 2: return func.call(thisArg, args[0], args[1]);
    case 3: return func.call(thisArg, args[0], args[1], args[2]);
  }
  return func.apply(thisArg, args);
}

/**
 * A specialized version of `_.forEach` for arrays without support for
 * iteratee shorthands.
 *
 * @private
 * @param {Array} [array] The array to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {Array} Returns `array`.
 */
function arrayEach(array, iteratee) {
  var index = -1,
      length = array ? array.length : 0;

  while (++index < length) {
    if (iteratee(array[index], index, array) === false) {
      break;
    }
  }
  return array;
}

/**
 * Appends the elements of `values` to `array`.
 *
 * @private
 * @param {Array} array The array to modify.
 * @param {Array} values The values to append.
 * @returns {Array} Returns `array`.
 */
function arrayPush(array, values) {
  var index = -1,
      length = values.length,
      offset = array.length;

  while (++index < length) {
    array[offset + index] = values[index];
  }
  return array;
}

/**
 * A specialized version of `_.reduce` for arrays without support for
 * iteratee shorthands.
 *
 * @private
 * @param {Array} [array] The array to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @param {*} [accumulator] The initial value.
 * @param {boolean} [initAccum] Specify using the first element of `array` as
 *  the initial value.
 * @returns {*} Returns the accumulated value.
 */
function arrayReduce(array, iteratee, accumulator, initAccum) {
  var index = -1,
      length = array ? array.length : 0;

  if (initAccum && length) {
    accumulator = array[++index];
  }
  while (++index < length) {
    accumulator = iteratee(accumulator, array[index], index, array);
  }
  return accumulator;
}

/**
 * The base implementation of `_.times` without support for iteratee shorthands
 * or max array length checks.
 *
 * @private
 * @param {number} n The number of times to invoke `iteratee`.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {Array} Returns the array of results.
 */
function baseTimes(n, iteratee) {
  var index = -1,
      result = Array(n);

  while (++index < n) {
    result[index] = iteratee(index);
  }
  return result;
}

/**
 * The base implementation of `_.unary` without support for storing metadata.
 *
 * @private
 * @param {Function} func The function to cap arguments for.
 * @returns {Function} Returns the new capped function.
 */
function baseUnary(func) {
  return function(value) {
    return func(value);
  };
}

/**
 * Gets the value at `key` of `object`.
 *
 * @private
 * @param {Object} [object] The object to query.
 * @param {string} key The key of the property to get.
 * @returns {*} Returns the property value.
 */
function getValue(object, key) {
  return object == null ? undefined : object[key];
}

/**
 * Checks if `value` is a host object in IE < 9.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a host object, else `false`.
 */
function isHostObject(value) {
  // Many host objects are `Object` objects that can coerce to strings
  // despite having improperly defined `toString` methods.
  var result = false;
  if (value != null && typeof value.toString != 'function') {
    try {
      result = !!(value + '');
    } catch (e) {}
  }
  return result;
}

/**
 * Converts `map` to its key-value pairs.
 *
 * @private
 * @param {Object} map The map to convert.
 * @returns {Array} Returns the key-value pairs.
 */
function mapToArray(map) {
  var index = -1,
      result = Array(map.size);

  map.forEach(function(value, key) {
    result[++index] = [key, value];
  });
  return result;
}

/**
 * Creates a unary function that invokes `func` with its argument transformed.
 *
 * @private
 * @param {Function} func The function to wrap.
 * @param {Function} transform The argument transform.
 * @returns {Function} Returns the new function.
 */
function overArg(func, transform) {
  return function(arg) {
    return func(transform(arg));
  };
}

/**
 * Converts `set` to an array of its values.
 *
 * @private
 * @param {Object} set The set to convert.
 * @returns {Array} Returns the values.
 */
function setToArray(set) {
  var index = -1,
      result = Array(set.size);

  set.forEach(function(value) {
    result[++index] = value;
  });
  return result;
}

/** Used for built-in method references. */
var arrayProto = Array.prototype,
    funcProto = Function.prototype,
    objectProto = Object.prototype;

/** Used to detect overreaching core-js shims. */
var coreJsData = root['__core-js_shared__'];

/** Used to detect methods masquerading as native. */
var maskSrcKey = (function() {
  var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');
  return uid ? ('Symbol(src)_1.' + uid) : '';
}());

/** Used to resolve the decompiled source of functions. */
var funcToString = funcProto.toString;

/** Used to check objects for own properties. */
var hasOwnProperty = objectProto.hasOwnProperty;

/** Used to infer the `Object` constructor. */
var objectCtorString = funcToString.call(Object);

/**
 * Used to resolve the
 * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
 * of values.
 */
var objectToString = objectProto.toString;

/** Used to detect if a method is native. */
var reIsNative = RegExp('^' +
  funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\$&')
  .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$'
);

/** Built-in value references. */
var Buffer = moduleExports ? root.Buffer : undefined,
    Symbol = root.Symbol,
    Uint8Array = root.Uint8Array,
    getPrototype = overArg(Object.getPrototypeOf, Object),
    objectCreate = Object.create,
    propertyIsEnumerable = objectProto.propertyIsEnumerable,
    splice = arrayProto.splice;

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeGetSymbols = Object.getOwnPropertySymbols,
    nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined,
    nativeKeys = overArg(Object.keys, Object),
    nativeMax = Math.max;

/* Built-in method references that are verified to be native. */
var DataView = getNative(root, 'DataView'),
    Map = getNative(root, 'Map'),
    Promise = getNative(root, 'Promise'),
    Set = getNative(root, 'Set'),
    WeakMap = getNative(root, 'WeakMap'),
    nativeCreate = getNative(Object, 'create');

/** Used to detect maps, sets, and weakmaps. */
var dataViewCtorString = toSource(DataView),
    mapCtorString = toSource(Map),
    promiseCtorString = toSource(Promise),
    setCtorString = toSource(Set),
    weakMapCtorString = toSource(WeakMap);

/** Used to convert symbols to primitives and strings. */
var symbolProto = Symbol ? Symbol.prototype : undefined,
    symbolValueOf = symbolProto ? symbolProto.valueOf : undefined;

/**
 * Creates a hash object.
 *
 * @private
 * @constructor
 * @param {Array} [entries] The key-value pairs to cache.
 */
function Hash(entries) {
  var index = -1,
      length = entries ? entries.length : 0;

  this.clear();
  while (++index < length) {
    var entry = entries[index];
    this.set(entry[0], entry[1]);
  }
}

/**
 * Removes all key-value entries from the hash.
 *
 * @private
 * @name clear
 * @memberOf Hash
 */
function hashClear() {
  this.__data__ = nativeCreate ? nativeCreate(null) : {};
}

/**
 * Removes `key` and its value from the hash.
 *
 * @private
 * @name delete
 * @memberOf Hash
 * @param {Object} hash The hash to modify.
 * @param {string} key The key of the value to remove.
 * @returns {boolean} Returns `true` if the entry was removed, else `false`.
 */
function hashDelete(key) {
  return this.has(key) && delete this.__data__[key];
}

/**
 * Gets the hash value for `key`.
 *
 * @private
 * @name get
 * @memberOf Hash
 * @param {string} key The key of the value to get.
 * @returns {*} Returns the entry value.
 */
function hashGet(key) {
  var data = this.__data__;
  if (nativeCreate) {
    var result = data[key];
    return result === HASH_UNDEFINED ? undefined : result;
  }
  return hasOwnProperty.call(data, key) ? data[key] : undefined;
}

/**
 * Checks if a hash value for `key` exists.
 *
 * @private
 * @name has
 * @memberOf Hash
 * @param {string} key The key of the entry to check.
 * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
 */
function hashHas(key) {
  var data = this.__data__;
  return nativeCreate ? data[key] !== undefined : hasOwnProperty.call(data, key);
}

/**
 * Sets the hash `key` to `value`.
 *
 * @private
 * @name set
 * @memberOf Hash
 * @param {string} key The key of the value to set.
 * @param {*} value The value to set.
 * @returns {Object} Returns the hash instance.
 */
function hashSet(key, value) {
  var data = this.__data__;
  data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;
  return this;
}

// Add methods to `Hash`.
Hash.prototype.clear = hashClear;
Hash.prototype['delete'] = hashDelete;
Hash.prototype.get = hashGet;
Hash.prototype.has = hashHas;
Hash.prototype.set = hashSet;

/**
 * Creates an list cache object.
 *
 * @private
 * @constructor
 * @param {Array} [entries] The key-value pairs to cache.
 */
function ListCache(entries) {
  var index = -1,
      length = entries ? entries.length : 0;

  this.clear();
  while (++index < length) {
    var entry = entries[index];
    this.set(entry[0], entry[1]);
  }
}

/**
 * Removes all key-value entries from the list cache.
 *
 * @private
 * @name clear
 * @memberOf ListCache
 */
function listCacheClear() {
  this.__data__ = [];
}

/**
 * Removes `key` and its value from the list cache.
 *
 * @private
 * @name delete
 * @memberOf ListCache
 * @param {string} key The key of the value to remove.
 * @returns {boolean} Returns `true` if the entry was removed, else `false`.
 */
function listCacheDelete(key) {
  var data = this.__data__,
      index = assocIndexOf(data, key);

  if (index < 0) {
    return false;
  }
  var lastIndex = data.length - 1;
  if (index == lastIndex) {
    data.pop();
  } else {
    splice.call(data, index, 1);
  }
  return true;
}

/**
 * Gets the list cache value for `key`.
 *
 * @private
 * @name get
 * @memberOf ListCache
 * @param {string} key The key of the value to get.
 * @returns {*} Returns the entry value.
 */
function listCacheGet(key) {
  var data = this.__data__,
      index = assocIndexOf(data, key);

  return index < 0 ? undefined : data[index][1];
}

/**
 * Checks if a list cache value for `key` exists.
 *
 * @private
 * @name has
 * @memberOf ListCache
 * @param {string} key The key of the entry to check.
 * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
 */
function listCacheHas(key) {
  return assocIndexOf(this.__data__, key) > -1;
}

/**
 * Sets the list cache `key` to `value`.
 *
 * @private
 * @name set
 * @memberOf ListCache
 * @param {string} key The key of the value to set.
 * @param {*} value The value to set.
 * @returns {Object} Returns the list cache instance.
 */
function listCacheSet(key, value) {
  var data = this.__data__,
      index = assocIndexOf(data, key);

  if (index < 0) {
    data.push([key, value]);
  } else {
    data[index][1] = value;
  }
  return this;
}

// Add methods to `ListCache`.
ListCache.prototype.clear = listCacheClear;
ListCache.prototype['delete'] = listCacheDelete;
ListCache.prototype.get = listCacheGet;
ListCache.prototype.has = listCacheHas;
ListCache.prototype.set = listCacheSet;

/**
 * Creates a map cache object to store key-value pairs.
 *
 * @private
 * @constructor
 * @param {Array} [entries] The key-value pairs to cache.
 */
function MapCache(entries) {
  var index = -1,
      length = entries ? entries.length : 0;

  this.clear();
  while (++index < length) {
    var entry = entries[index];
    this.set(entry[0], entry[1]);
  }
}

/**
 * Removes all key-value entries from the map.
 *
 * @private
 * @name clear
 * @memberOf MapCache
 */
function mapCacheClear() {
  this.__data__ = {
    'hash': new Hash,
    'map': new (Map || ListCache),
    'string': new Hash
  };
}

/**
 * Removes `key` and its value from the map.
 *
 * @private
 * @name delete
 * @memberOf MapCache
 * @param {string} key The key of the value to remove.
 * @returns {boolean} Returns `true` if the entry was removed, else `false`.
 */
function mapCacheDelete(key) {
  return getMapData(this, key)['delete'](key);
}

/**
 * Gets the map value for `key`.
 *
 * @private
 * @name get
 * @memberOf MapCache
 * @param {string} key The key of the value to get.
 * @returns {*} Returns the entry value.
 */
function mapCacheGet(key) {
  return getMapData(this, key).get(key);
}

/**
 * Checks if a map value for `key` exists.
 *
 * @private
 * @name has
 * @memberOf MapCache
 * @param {string} key The key of the entry to check.
 * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
 */
function mapCacheHas(key) {
  return getMapData(this, key).has(key);
}

/**
 * Sets the map `key` to `value`.
 *
 * @private
 * @name set
 * @memberOf MapCache
 * @param {string} key The key of the value to set.
 * @param {*} value The value to set.
 * @returns {Object} Returns the map cache instance.
 */
function mapCacheSet(key, value) {
  getMapData(this, key).set(key, value);
  return this;
}

// Add methods to `MapCache`.
MapCache.prototype.clear = mapCacheClear;
MapCache.prototype['delete'] = mapCacheDelete;
MapCache.prototype.get = mapCacheGet;
MapCache.prototype.has = mapCacheHas;
MapCache.prototype.set = mapCacheSet;

/**
 * Creates a stack cache object to store key-value pairs.
 *
 * @private
 * @constructor
 * @param {Array} [entries] The key-value pairs to cache.
 */
function Stack(entries) {
  this.__data__ = new ListCache(entries);
}

/**
 * Removes all key-value entries from the stack.
 *
 * @private
 * @name clear
 * @memberOf Stack
 */
function stackClear() {
  this.__data__ = new ListCache;
}

/**
 * Removes `key` and its value from the stack.
 *
 * @private
 * @name delete
 * @memberOf Stack
 * @param {string} key The key of the value to remove.
 * @returns {boolean} Returns `true` if the entry was removed, else `false`.
 */
function stackDelete(key) {
  return this.__data__['delete'](key);
}

/**
 * Gets the stack value for `key`.
 *
 * @private
 * @name get
 * @memberOf Stack
 * @param {string} key The key of the value to get.
 * @returns {*} Returns the entry value.
 */
function stackGet(key) {
  return this.__data__.get(key);
}

/**
 * Checks if a stack value for `key` exists.
 *
 * @private
 * @name has
 * @memberOf Stack
 * @param {string} key The key of the entry to check.
 * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
 */
function stackHas(key) {
  return this.__data__.has(key);
}

/**
 * Sets the stack `key` to `value`.
 *
 * @private
 * @name set
 * @memberOf Stack
 * @param {string} key The key of the value to set.
 * @param {*} value The value to set.
 * @returns {Object} Returns the stack cache instance.
 */
function stackSet(key, value) {
  var cache = this.__data__;
  if (cache instanceof ListCache) {
    var pairs = cache.__data__;
    if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {
      pairs.push([key, value]);
      return this;
    }
    cache = this.__data__ = new MapCache(pairs);
  }
  cache.set(key, value);
  return this;
}

// Add methods to `Stack`.
Stack.prototype.clear = stackClear;
Stack.prototype['delete'] = stackDelete;
Stack.prototype.get = stackGet;
Stack.prototype.has = stackHas;
Stack.prototype.set = stackSet;

/**
 * Creates an array of the enumerable property names of the array-like `value`.
 *
 * @private
 * @param {*} value The value to query.
 * @param {boolean} inherited Specify returning inherited property names.
 * @returns {Array} Returns the array of property names.
 */
function arrayLikeKeys(value, inherited) {
  // Safari 8.1 makes `arguments.callee` enumerable in strict mode.
  // Safari 9 makes `arguments.length` enumerable in strict mode.
  var result = (isArray(value) || isArguments(value))
    ? baseTimes(value.length, String)
    : [];

  var length = result.length,
      skipIndexes = !!length;

  for (var key in value) {
    if ((inherited || hasOwnProperty.call(value, key)) &&
        !(skipIndexes && (key == 'length' || isIndex(key, length)))) {
      result.push(key);
    }
  }
  return result;
}

/**
 * This function is like `assignValue` except that it doesn't assign
 * `undefined` values.
 *
 * @private
 * @param {Object} object The object to modify.
 * @param {string} key The key of the property to assign.
 * @param {*} value The value to assign.
 */
function assignMergeValue(object, key, value) {
  if ((value !== undefined && !eq(object[key], value)) ||
      (typeof key == 'number' && value === undefined && !(key in object))) {
    object[key] = value;
  }
}

/**
 * Assigns `value` to `key` of `object` if the existing value is not equivalent
 * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
 * for equality comparisons.
 *
 * @private
 * @param {Object} object The object to modify.
 * @param {string} key The key of the property to assign.
 * @param {*} value The value to assign.
 */
function assignValue(object, key, value) {
  var objValue = object[key];
  if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||
      (value === undefined && !(key in object))) {
    object[key] = value;
  }
}

/**
 * Gets the index at which the `key` is found in `array` of key-value pairs.
 *
 * @private
 * @param {Array} array The array to inspect.
 * @param {*} key The key to search for.
 * @returns {number} Returns the index of the matched value, else `-1`.
 */
function assocIndexOf(array, key) {
  var length = array.length;
  while (length--) {
    if (eq(array[length][0], key)) {
      return length;
    }
  }
  return -1;
}

/**
 * The base implementation of `_.assign` without support for multiple sources
 * or `customizer` functions.
 *
 * @private
 * @param {Object} object The destination object.
 * @param {Object} source The source object.
 * @returns {Object} Returns `object`.
 */
function baseAssign(object, source) {
  return object && copyObject(source, keys(source), object);
}

/**
 * The base implementation of `_.clone` and `_.cloneDeep` which tracks
 * traversed objects.
 *
 * @private
 * @param {*} value The value to clone.
 * @param {boolean} [isDeep] Specify a deep clone.
 * @param {boolean} [isFull] Specify a clone including symbols.
 * @param {Function} [customizer] The function to customize cloning.
 * @param {string} [key] The key of `value`.
 * @param {Object} [object] The parent object of `value`.
 * @param {Object} [stack] Tracks traversed objects and their clone counterparts.
 * @returns {*} Returns the cloned value.
 */
function baseClone(value, isDeep, isFull, customizer, key, object, stack) {
  var result;
  if (customizer) {
    result = object ? customizer(value, key, object, stack) : customizer(value);
  }
  if (result !== undefined) {
    return result;
  }
  if (!isObject(value)) {
    return value;
  }
  var isArr = isArray(value);
  if (isArr) {
    result = initCloneArray(value);
    if (!isDeep) {
      return copyArray(value, result);
    }
  } else {
    var tag = getTag(value),
        isFunc = tag == funcTag || tag == genTag;

    if (isBuffer(value)) {
      return cloneBuffer(value, isDeep);
    }
    if (tag == objectTag || tag == argsTag || (isFunc && !object)) {
      if (isHostObject(value)) {
        return object ? value : {};
      }
      result = initCloneObject(isFunc ? {} : value);
      if (!isDeep) {
        return copySymbols(value, baseAssign(result, value));
      }
    } else {
      if (!cloneableTags[tag]) {
        return object ? value : {};
      }
      result = initCloneByTag(value, tag, baseClone, isDeep);
    }
  }
  // Check for circular references and return its corresponding clone.
  stack || (stack = new Stack);
  var stacked = stack.get(value);
  if (stacked) {
    return stacked;
  }
  stack.set(value, result);

  if (!isArr) {
    var props = isFull ? getAllKeys(value) : keys(value);
  }
  arrayEach(props || value, function(subValue, key) {
    if (props) {
      key = subValue;
      subValue = value[key];
    }
    // Recursively populate clone (susceptible to call stack limits).
    assignValue(result, key, baseClone(subValue, isDeep, isFull, customizer, key, value, stack));
  });
  return result;
}

/**
 * The base implementation of `_.create` without support for assigning
 * properties to the created object.
 *
 * @private
 * @param {Object} prototype The object to inherit from.
 * @returns {Object} Returns the new object.
 */
function baseCreate(proto) {
  return isObject(proto) ? objectCreate(proto) : {};
}

/**
 * The base implementation of `getAllKeys` and `getAllKeysIn` which uses
 * `keysFunc` and `symbolsFunc` to get the enumerable property names and
 * symbols of `object`.
 *
 * @private
 * @param {Object} object The object to query.
 * @param {Function} keysFunc The function to get the keys of `object`.
 * @param {Function} symbolsFunc The function to get the symbols of `object`.
 * @returns {Array} Returns the array of property names and symbols.
 */
function baseGetAllKeys(object, keysFunc, symbolsFunc) {
  var result = keysFunc(object);
  return isArray(object) ? result : arrayPush(result, symbolsFunc(object));
}

/**
 * The base implementation of `getTag`.
 *
 * @private
 * @param {*} value The value to query.
 * @returns {string} Returns the `toStringTag`.
 */
function baseGetTag(value) {
  return objectToString.call(value);
}

/**
 * The base implementation of `_.isNative` without bad shim checks.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a native function,
 *  else `false`.
 */
function baseIsNative(value) {
  if (!isObject(value) || isMasked(value)) {
    return false;
  }
  var pattern = (isFunction(value) || isHostObject(value)) ? reIsNative : reIsHostCtor;
  return pattern.test(toSource(value));
}

/**
 * The base implementation of `_.isTypedArray` without Node.js optimizations.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
 */
function baseIsTypedArray(value) {
  return isObjectLike(value) &&
    isLength(value.length) && !!typedArrayTags[objectToString.call(value)];
}

/**
 * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.
 *
 * @private
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of property names.
 */
function baseKeys(object) {
  if (!isPrototype(object)) {
    return nativeKeys(object);
  }
  var result = [];
  for (var key in Object(object)) {
    if (hasOwnProperty.call(object, key) && key != 'constructor') {
      result.push(key);
    }
  }
  return result;
}

/**
 * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense.
 *
 * @private
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of property names.
 */
function baseKeysIn(object) {
  if (!isObject(object)) {
    return nativeKeysIn(object);
  }
  var isProto = isPrototype(object),
      result = [];

  for (var key in object) {
    if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {
      result.push(key);
    }
  }
  return result;
}

/**
 * The base implementation of `_.merge` without support for multiple sources.
 *
 * @private
 * @param {Object} object The destination object.
 * @param {Object} source The source object.
 * @param {number} srcIndex The index of `source`.
 * @param {Function} [customizer] The function to customize merged values.
 * @param {Object} [stack] Tracks traversed source values and their merged
 *  counterparts.
 */
function baseMerge(object, source, srcIndex, customizer, stack) {
  if (object === source) {
    return;
  }
  if (!(isArray(source) || isTypedArray(source))) {
    var props = baseKeysIn(source);
  }
  arrayEach(props || source, function(srcValue, key) {
    if (props) {
      key = srcValue;
      srcValue = source[key];
    }
    if (isObject(srcValue)) {
      stack || (stack = new Stack);
      baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);
    }
    else {
      var newValue = customizer
        ? customizer(object[key], srcValue, (key + ''), object, source, stack)
        : undefined;

      if (newValue === undefined) {
        newValue = srcValue;
      }
      assignMergeValue(object, key, newValue);
    }
  });
}

/**
 * A specialized version of `baseMerge` for arrays and objects which performs
 * deep merges and tracks traversed objects enabling objects with circular
 * references to be merged.
 *
 * @private
 * @param {Object} object The destination object.
 * @param {Object} source The source object.
 * @param {string} key The key of the value to merge.
 * @param {number} srcIndex The index of `source`.
 * @param {Function} mergeFunc The function to merge values.
 * @param {Function} [customizer] The function to customize assigned values.
 * @param {Object} [stack] Tracks traversed source values and their merged
 *  counterparts.
 */
function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) {
  var objValue = object[key],
      srcValue = source[key],
      stacked = stack.get(srcValue);

  if (stacked) {
    assignMergeValue(object, key, stacked);
    return;
  }
  var newValue = customizer
    ? customizer(objValue, srcValue, (key + ''), object, source, stack)
    : undefined;

  var isCommon = newValue === undefined;

  if (isCommon) {
    newValue = srcValue;
    if (isArray(srcValue) || isTypedArray(srcValue)) {
      if (isArray(objValue)) {
        newValue = objValue;
      }
      else if (isArrayLikeObject(objValue)) {
        newValue = copyArray(objValue);
      }
      else {
        isCommon = false;
        newValue = baseClone(srcValue, true);
      }
    }
    else if (isPlainObject(srcValue) || isArguments(srcValue)) {
      if (isArguments(objValue)) {
        newValue = toPlainObject(objValue);
      }
      else if (!isObject(objValue) || (srcIndex && isFunction(objValue))) {
        isCommon = false;
        newValue = baseClone(srcValue, true);
      }
      else {
        newValue = objValue;
      }
    }
    else {
      isCommon = false;
    }
  }
  if (isCommon) {
    // Recursively merge objects and arrays (susceptible to call stack limits).
    stack.set(srcValue, newValue);
    mergeFunc(newValue, srcValue, srcIndex, customizer, stack);
    stack['delete'](srcValue);
  }
  assignMergeValue(object, key, newValue);
}

/**
 * The base implementation of `_.rest` which doesn't validate or coerce arguments.
 *
 * @private
 * @param {Function} func The function to apply a rest parameter to.
 * @param {number} [start=func.length-1] The start position of the rest parameter.
 * @returns {Function} Returns the new function.
 */
function baseRest(func, start) {
  start = nativeMax(start === undefined ? (func.length - 1) : start, 0);
  return function() {
    var args = arguments,
        index = -1,
        length = nativeMax(args.length - start, 0),
        array = Array(length);

    while (++index < length) {
      array[index] = args[start + index];
    }
    index = -1;
    var otherArgs = Array(start + 1);
    while (++index < start) {
      otherArgs[index] = args[index];
    }
    otherArgs[start] = array;
    return apply(func, this, otherArgs);
  };
}

/**
 * Creates a clone of  `buffer`.
 *
 * @private
 * @param {Buffer} buffer The buffer to clone.
 * @param {boolean} [isDeep] Specify a deep clone.
 * @returns {Buffer} Returns the cloned buffer.
 */
function cloneBuffer(buffer, isDeep) {
  if (isDeep) {
    return buffer.slice();
  }
  var result = new buffer.constructor(buffer.length);
  buffer.copy(result);
  return result;
}

/**
 * Creates a clone of `arrayBuffer`.
 *
 * @private
 * @param {ArrayBuffer} arrayBuffer The array buffer to clone.
 * @returns {ArrayBuffer} Returns the cloned array buffer.
 */
function cloneArrayBuffer(arrayBuffer) {
  var result = new arrayBuffer.constructor(arrayBuffer.byteLength);
  new Uint8Array(result).set(new Uint8Array(arrayBuffer));
  return result;
}

/**
 * Creates a clone of `dataView`.
 *
 * @private
 * @param {Object} dataView The data view to clone.
 * @param {boolean} [isDeep] Specify a deep clone.
 * @returns {Object} Returns the cloned data view.
 */
function cloneDataView(dataView, isDeep) {
  var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;
  return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);
}

/**
 * Creates a clone of `map`.
 *
 * @private
 * @param {Object} map The map to clone.
 * @param {Function} cloneFunc The function to clone values.
 * @param {boolean} [isDeep] Specify a deep clone.
 * @returns {Object} Returns the cloned map.
 */
function cloneMap(map, isDeep, cloneFunc) {
  var array = isDeep ? cloneFunc(mapToArray(map), true) : mapToArray(map);
  return arrayReduce(array, addMapEntry, new map.constructor);
}

/**
 * Creates a clone of `regexp`.
 *
 * @private
 * @param {Object} regexp The regexp to clone.
 * @returns {Object} Returns the cloned regexp.
 */
function cloneRegExp(regexp) {
  var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));
  result.lastIndex = regexp.lastIndex;
  return result;
}

/**
 * Creates a clone of `set`.
 *
 * @private
 * @param {Object} set The set to clone.
 * @param {Function} cloneFunc The function to clone values.
 * @param {boolean} [isDeep] Specify a deep clone.
 * @returns {Object} Returns the cloned set.
 */
function cloneSet(set, isDeep, cloneFunc) {
  var array = isDeep ? cloneFunc(setToArray(set), true) : setToArray(set);
  return arrayReduce(array, addSetEntry, new set.constructor);
}

/**
 * Creates a clone of the `symbol` object.
 *
 * @private
 * @param {Object} symbol The symbol object to clone.
 * @returns {Object} Returns the cloned symbol object.
 */
function cloneSymbol(symbol) {
  return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};
}

/**
 * Creates a clone of `typedArray`.
 *
 * @private
 * @param {Object} typedArray The typed array to clone.
 * @param {boolean} [isDeep] Specify a deep clone.
 * @returns {Object} Returns the cloned typed array.
 */
function cloneTypedArray(typedArray, isDeep) {
  var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;
  return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);
}

/**
 * Copies the values of `source` to `array`.
 *
 * @private
 * @param {Array} source The array to copy values from.
 * @param {Array} [array=[]] The array to copy values to.
 * @returns {Array} Returns `array`.
 */
function copyArray(source, array) {
  var index = -1,
      length = source.length;

  array || (array = Array(length));
  while (++index < length) {
    array[index] = source[index];
  }
  return array;
}

/**
 * Copies properties of `source` to `object`.
 *
 * @private
 * @param {Object} source The object to copy properties from.
 * @param {Array} props The property identifiers to copy.
 * @param {Object} [object={}] The object to copy properties to.
 * @param {Function} [customizer] The function to customize copied values.
 * @returns {Object} Returns `object`.
 */
function copyObject(source, props, object, customizer) {
  object || (object = {});

  var index = -1,
      length = props.length;

  while (++index < length) {
    var key = props[index];

    var newValue = customizer
      ? customizer(object[key], source[key], key, object, source)
      : undefined;

    assignValue(object, key, newValue === undefined ? source[key] : newValue);
  }
  return object;
}

/**
 * Copies own symbol properties of `source` to `object`.
 *
 * @private
 * @param {Object} source The object to copy symbols from.
 * @param {Object} [object={}] The object to copy symbols to.
 * @returns {Object} Returns `object`.
 */
function copySymbols(source, object) {
  return copyObject(source, getSymbols(source), object);
}

/**
 * Creates a function like `_.assign`.
 *
 * @private
 * @param {Function} assigner The function to assign values.
 * @returns {Function} Returns the new assigner function.
 */
function createAssigner(assigner) {
  return baseRest(function(object, sources) {
    var index = -1,
        length = sources.length,
        customizer = length > 1 ? sources[length - 1] : undefined,
        guard = length > 2 ? sources[2] : undefined;

    customizer = (assigner.length > 3 && typeof customizer == 'function')
      ? (length--, customizer)
      : undefined;

    if (guard && isIterateeCall(sources[0], sources[1], guard)) {
      customizer = length < 3 ? undefined : customizer;
      length = 1;
    }
    object = Object(object);
    while (++index < length) {
      var source = sources[index];
      if (source) {
        assigner(object, source, index, customizer);
      }
    }
    return object;
  });
}

/**
 * Creates an array of own enumerable property names and symbols of `object`.
 *
 * @private
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of property names and symbols.
 */
function getAllKeys(object) {
  return baseGetAllKeys(object, keys, getSymbols);
}

/**
 * Gets the data for `map`.
 *
 * @private
 * @param {Object} map The map to query.
 * @param {string} key The reference key.
 * @returns {*} Returns the map data.
 */
function getMapData(map, key) {
  var data = map.__data__;
  return isKeyable(key)
    ? data[typeof key == 'string' ? 'string' : 'hash']
    : data.map;
}

/**
 * Gets the native function at `key` of `object`.
 *
 * @private
 * @param {Object} object The object to query.
 * @param {string} key The key of the method to get.
 * @returns {*} Returns the function if it's native, else `undefined`.
 */
function getNative(object, key) {
  var value = getValue(object, key);
  return baseIsNative(value) ? value : undefined;
}

/**
 * Creates an array of the own enumerable symbol properties of `object`.
 *
 * @private
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of symbols.
 */
var getSymbols = nativeGetSymbols ? overArg(nativeGetSymbols, Object) : stubArray;

/**
 * Gets the `toStringTag` of `value`.
 *
 * @private
 * @param {*} value The value to query.
 * @returns {string} Returns the `toStringTag`.
 */
var getTag = baseGetTag;

// Fallback for data views, maps, sets, and weak maps in IE 11,
// for data views in Edge < 14, and promises in Node.js.
if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||
    (Map && getTag(new Map) != mapTag) ||
    (Promise && getTag(Promise.resolve()) != promiseTag) ||
    (Set && getTag(new Set) != setTag) ||
    (WeakMap && getTag(new WeakMap) != weakMapTag)) {
  getTag = function(value) {
    var result = objectToString.call(value),
        Ctor = result == objectTag ? value.constructor : undefined,
        ctorString = Ctor ? toSource(Ctor) : undefined;

    if (ctorString) {
      switch (ctorString) {
        case dataViewCtorString: return dataViewTag;
        case mapCtorString: return mapTag;
        case promiseCtorString: return promiseTag;
        case setCtorString: return setTag;
        case weakMapCtorString: return weakMapTag;
      }
    }
    return result;
  };
}

/**
 * Initializes an array clone.
 *
 * @private
 * @param {Array} array The array to clone.
 * @returns {Array} Returns the initialized clone.
 */
function initCloneArray(array) {
  var length = array.length,
      result = array.constructor(length);

  // Add properties assigned by `RegExp#exec`.
  if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {
    result.index = array.index;
    result.input = array.input;
  }
  return result;
}

/**
 * Initializes an object clone.
 *
 * @private
 * @param {Object} object The object to clone.
 * @returns {Object} Returns the initialized clone.
 */
function initCloneObject(object) {
  return (typeof object.constructor == 'function' && !isPrototype(object))
    ? baseCreate(getPrototype(object))
    : {};
}

/**
 * Initializes an object clone based on its `toStringTag`.
 *
 * **Note:** This function only supports cloning values with tags of
 * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.
 *
 * @private
 * @param {Object} object The object to clone.
 * @param {string} tag The `toStringTag` of the object to clone.
 * @param {Function} cloneFunc The function to clone values.
 * @param {boolean} [isDeep] Specify a deep clone.
 * @returns {Object} Returns the initialized clone.
 */
function initCloneByTag(object, tag, cloneFunc, isDeep) {
  var Ctor = object.constructor;
  switch (tag) {
    case arrayBufferTag:
      return cloneArrayBuffer(object);

    case boolTag:
    case dateTag:
      return new Ctor(+object);

    case dataViewTag:
      return cloneDataView(object, isDeep);

    case float32Tag: case float64Tag:
    case int8Tag: case int16Tag: case int32Tag:
    case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:
      return cloneTypedArray(object, isDeep);

    case mapTag:
      return cloneMap(object, isDeep, cloneFunc);

    case numberTag:
    case stringTag:
      return new Ctor(object);

    case regexpTag:
      return cloneRegExp(object);

    case setTag:
      return cloneSet(object, isDeep, cloneFunc);

    case symbolTag:
      return cloneSymbol(object);
  }
}

/**
 * Checks if `value` is a valid array-like index.
 *
 * @private
 * @param {*} value The value to check.
 * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
 * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
 */
function isIndex(value, length) {
  length = length == null ? MAX_SAFE_INTEGER : length;
  return !!length &&
    (typeof value == 'number' || reIsUint.test(value)) &&
    (value > -1 && value % 1 == 0 && value < length);
}

/**
 * Checks if the given arguments are from an iteratee call.
 *
 * @private
 * @param {*} value The potential iteratee value argument.
 * @param {*} index The potential iteratee index or key argument.
 * @param {*} object The potential iteratee object argument.
 * @returns {boolean} Returns `true` if the arguments are from an iteratee call,
 *  else `false`.
 */
function isIterateeCall(value, index, object) {
  if (!isObject(object)) {
    return false;
  }
  var type = typeof index;
  if (type == 'number'
        ? (isArrayLike(object) && isIndex(index, object.length))
        : (type == 'string' && index in object)
      ) {
    return eq(object[index], value);
  }
  return false;
}

/**
 * Checks if `value` is suitable for use as unique object key.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is suitable, else `false`.
 */
function isKeyable(value) {
  var type = typeof value;
  return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')
    ? (value !== '__proto__')
    : (value === null);
}

/**
 * Checks if `func` has its source masked.
 *
 * @private
 * @param {Function} func The function to check.
 * @returns {boolean} Returns `true` if `func` is masked, else `false`.
 */
function isMasked(func) {
  return !!maskSrcKey && (maskSrcKey in func);
}

/**
 * Checks if `value` is likely a prototype object.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.
 */
function isPrototype(value) {
  var Ctor = value && value.constructor,
      proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;

  return value === proto;
}

/**
 * This function is like
 * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
 * except that it includes inherited enumerable properties.
 *
 * @private
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of property names.
 */
function nativeKeysIn(object) {
  var result = [];
  if (object != null) {
    for (var key in Object(object)) {
      result.push(key);
    }
  }
  return result;
}

/**
 * Converts `func` to its source code.
 *
 * @private
 * @param {Function} func The function to process.
 * @returns {string} Returns the source code.
 */
function toSource(func) {
  if (func != null) {
    try {
      return funcToString.call(func);
    } catch (e) {}
    try {
      return (func + '');
    } catch (e) {}
  }
  return '';
}

/**
 * Performs a
 * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
 * comparison between two values to determine if they are equivalent.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to compare.
 * @param {*} other The other value to compare.
 * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
 * @example
 *
 * var object = { 'a': 1 };
 * var other = { 'a': 1 };
 *
 * _.eq(object, object);
 * // => true
 *
 * _.eq(object, other);
 * // => false
 *
 * _.eq('a', 'a');
 * // => true
 *
 * _.eq('a', Object('a'));
 * // => false
 *
 * _.eq(NaN, NaN);
 * // => true
 */
function eq(value, other) {
  return value === other || (value !== value && other !== other);
}

/**
 * Checks if `value` is likely an `arguments` object.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is an `arguments` object,
 *  else `false`.
 * @example
 *
 * _.isArguments(function() { return arguments; }());
 * // => true
 *
 * _.isArguments([1, 2, 3]);
 * // => false
 */
function isArguments(value) {
  // Safari 8.1 makes `arguments.callee` enumerable in strict mode.
  return isArrayLikeObject(value) && hasOwnProperty.call(value, 'callee') &&
    (!propertyIsEnumerable.call(value, 'callee') || objectToString.call(value) == argsTag);
}

/**
 * Checks if `value` is classified as an `Array` object.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is an array, else `false`.
 * @example
 *
 * _.isArray([1, 2, 3]);
 * // => true
 *
 * _.isArray(document.body.children);
 * // => false
 *
 * _.isArray('abc');
 * // => false
 *
 * _.isArray(_.noop);
 * // => false
 */
var isArray = Array.isArray;

/**
 * Checks if `value` is array-like. A value is considered array-like if it's
 * not a function and has a `value.length` that's an integer greater than or
 * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is array-like, else `false`.
 * @example
 *
 * _.isArrayLike([1, 2, 3]);
 * // => true
 *
 * _.isArrayLike(document.body.children);
 * // => true
 *
 * _.isArrayLike('abc');
 * // => true
 *
 * _.isArrayLike(_.noop);
 * // => false
 */
function isArrayLike(value) {
  return value != null && isLength(value.length) && !isFunction(value);
}

/**
 * This method is like `_.isArrayLike` except that it also checks if `value`
 * is an object.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is an array-like object,
 *  else `false`.
 * @example
 *
 * _.isArrayLikeObject([1, 2, 3]);
 * // => true
 *
 * _.isArrayLikeObject(document.body.children);
 * // => true
 *
 * _.isArrayLikeObject('abc');
 * // => false
 *
 * _.isArrayLikeObject(_.noop);
 * // => false
 */
function isArrayLikeObject(value) {
  return isObjectLike(value) && isArrayLike(value);
}

/**
 * Checks if `value` is a buffer.
 *
 * @static
 * @memberOf _
 * @since 4.3.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.
 * @example
 *
 * _.isBuffer(new Buffer(2));
 * // => true
 *
 * _.isBuffer(new Uint8Array(2));
 * // => false
 */
var isBuffer = nativeIsBuffer || stubFalse;

/**
 * Checks if `value` is classified as a `Function` object.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a function, else `false`.
 * @example
 *
 * _.isFunction(_);
 * // => true
 *
 * _.isFunction(/abc/);
 * // => false
 */
function isFunction(value) {
  // The use of `Object#toString` avoids issues with the `typeof` operator
  // in Safari 8-9 which returns 'object' for typed array and other constructors.
  var tag = isObject(value) ? objectToString.call(value) : '';
  return tag == funcTag || tag == genTag;
}

/**
 * Checks if `value` is a valid array-like length.
 *
 * **Note:** This method is loosely based on
 * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
 * @example
 *
 * _.isLength(3);
 * // => true
 *
 * _.isLength(Number.MIN_VALUE);
 * // => false
 *
 * _.isLength(Infinity);
 * // => false
 *
 * _.isLength('3');
 * // => false
 */
function isLength(value) {
  return typeof value == 'number' &&
    value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
}

/**
 * Checks if `value` is the
 * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)
 * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is an object, else `false`.
 * @example
 *
 * _.isObject({});
 * // => true
 *
 * _.isObject([1, 2, 3]);
 * // => true
 *
 * _.isObject(_.noop);
 * // => true
 *
 * _.isObject(null);
 * // => false
 */
function isObject(value) {
  var type = typeof value;
  return !!value && (type == 'object' || type == 'function');
}

/**
 * Checks if `value` is object-like. A value is object-like if it's not `null`
 * and has a `typeof` result of "object".
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
 * @example
 *
 * _.isObjectLike({});
 * // => true
 *
 * _.isObjectLike([1, 2, 3]);
 * // => true
 *
 * _.isObjectLike(_.noop);
 * // => false
 *
 * _.isObjectLike(null);
 * // => false
 */
function isObjectLike(value) {
  return !!value && typeof value == 'object';
}

/**
 * Checks if `value` is a plain object, that is, an object created by the
 * `Object` constructor or one with a `[[Prototype]]` of `null`.
 *
 * @static
 * @memberOf _
 * @since 0.8.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
 * @example
 *
 * function Foo() {
 *   this.a = 1;
 * }
 *
 * _.isPlainObject(new Foo);
 * // => false
 *
 * _.isPlainObject([1, 2, 3]);
 * // => false
 *
 * _.isPlainObject({ 'x': 0, 'y': 0 });
 * // => true
 *
 * _.isPlainObject(Object.create(null));
 * // => true
 */
function isPlainObject(value) {
  if (!isObjectLike(value) ||
      objectToString.call(value) != objectTag || isHostObject(value)) {
    return false;
  }
  var proto = getPrototype(value);
  if (proto === null) {
    return true;
  }
  var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;
  return (typeof Ctor == 'function' &&
    Ctor instanceof Ctor && funcToString.call(Ctor) == objectCtorString);
}

/**
 * Checks if `value` is classified as a typed array.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
 * @example
 *
 * _.isTypedArray(new Uint8Array);
 * // => true
 *
 * _.isTypedArray([]);
 * // => false
 */
var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;

/**
 * Converts `value` to a plain object flattening inherited enumerable string
 * keyed properties of `value` to own properties of the plain object.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Lang
 * @param {*} value The value to convert.
 * @returns {Object} Returns the converted plain object.
 * @example
 *
 * function Foo() {
 *   this.b = 2;
 * }
 *
 * Foo.prototype.c = 3;
 *
 * _.assign({ 'a': 1 }, new Foo);
 * // => { 'a': 1, 'b': 2 }
 *
 * _.assign({ 'a': 1 }, _.toPlainObject(new Foo));
 * // => { 'a': 1, 'b': 2, 'c': 3 }
 */
function toPlainObject(value) {
  return copyObject(value, keysIn(value));
}

/**
 * Creates an array of the own enumerable property names of `object`.
 *
 * **Note:** Non-object values are coerced to objects. See the
 * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
 * for more details.
 *
 * @static
 * @since 0.1.0
 * @memberOf _
 * @category Object
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of property names.
 * @example
 *
 * function Foo() {
 *   this.a = 1;
 *   this.b = 2;
 * }
 *
 * Foo.prototype.c = 3;
 *
 * _.keys(new Foo);
 * // => ['a', 'b'] (iteration order is not guaranteed)
 *
 * _.keys('hi');
 * // => ['0', '1']
 */
function keys(object) {
  return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);
}

/**
 * Creates an array of the own and inherited enumerable property names of `object`.
 *
 * **Note:** Non-object values are coerced to objects.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Object
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of property names.
 * @example
 *
 * function Foo() {
 *   this.a = 1;
 *   this.b = 2;
 * }
 *
 * Foo.prototype.c = 3;
 *
 * _.keysIn(new Foo);
 * // => ['a', 'b', 'c'] (iteration order is not guaranteed)
 */
function keysIn(object) {
  return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object);
}

/**
 * This method is like `_.assign` except that it recursively merges own and
 * inherited enumerable string keyed properties of source objects into the
 * destination object. Source properties that resolve to `undefined` are
 * skipped if a destination value exists. Array and plain object properties
 * are merged recursively. Other objects and value types are overridden by
 * assignment. Source objects are applied from left to right. Subsequent
 * sources overwrite property assignments of previous sources.
 *
 * **Note:** This method mutates `object`.
 *
 * @static
 * @memberOf _
 * @since 0.5.0
 * @category Object
 * @param {Object} object The destination object.
 * @param {...Object} [sources] The source objects.
 * @returns {Object} Returns `object`.
 * @example
 *
 * var object = {
 *   'a': [{ 'b': 2 }, { 'd': 4 }]
 * };
 *
 * var other = {
 *   'a': [{ 'c': 3 }, { 'e': 5 }]
 * };
 *
 * _.merge(object, other);
 * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] }
 */
var merge = createAssigner(function(object, source, srcIndex) {
  baseMerge(object, source, srcIndex);
});

/**
 * This method returns a new empty array.
 *
 * @static
 * @memberOf _
 * @since 4.13.0
 * @category Util
 * @returns {Array} Returns the new empty array.
 * @example
 *
 * var arrays = _.times(2, _.stubArray);
 *
 * console.log(arrays);
 * // => [[], []]
 *
 * console.log(arrays[0] === arrays[1]);
 * // => false
 */
function stubArray() {
  return [];
}

/**
 * This method returns `false`.
 *
 * @static
 * @memberOf _
 * @since 4.13.0
 * @category Util
 * @returns {boolean} Returns `false`.
 * @example
 *
 * _.times(2, _.stubFalse);
 * // => [false, false]
 */
function stubFalse() {
  return false;
}

module.exports = merge;

/* WEBPACK VAR INJECTION */}.call(exports, __webpack_require__(3), __webpack_require__(4)(module)))

/***/ }),
/* 3 */
/***/ (function(module, exports) {

var g;

// This works in non-strict mode
g = (function() {
	return this;
})();

try {
	// This works if eval is allowed (see CSP)
	g = g || Function("return this")() || (1,eval)("this");
} catch(e) {
	// This works if the window reference is available
	if(typeof window === "object")
		g = window;
}

// g can still be undefined, but nothing to do about it...
// We return undefined, instead of nothing here, so it's
// easier to handle this case. if(!global) { ...}

module.exports = g;


/***/ }),
/* 4 */
/***/ (function(module, exports) {

module.exports = function(module) {
	if(!module.webpackPolyfill) {
		module.deprecate = function() {};
		module.paths = [];
		// module.parent = undefined by default
		if(!module.children) module.children = [];
		Object.defineProperty(module, "loaded", {
			enumerable: true,
			get: function() {
				return module.l;
			}
		});
		Object.defineProperty(module, "id", {
			enumerable: true,
			get: function() {
				return module.i;
			}
		});
		module.webpackPolyfill = 1;
	}
	return module;
};


/***/ }),
/* 5 */
/***/ (function(module, exports) {

module.exports = {
  data: function data() {
    return {
      chartData: null
    };
  },
  watch: {
    'chartData': {
      handler: function handler(newData, oldData) {
        if (oldData) {
          var chart = this.$data._chart;
          var newDatasetLabels = newData.datasets.map(function (dataset) {
            return dataset.label;
          });
          var oldDatasetLabels = oldData.datasets.map(function (dataset) {
            return dataset.label;
          });
          var oldLabels = JSON.stringify(oldDatasetLabels);
          var newLabels = JSON.stringify(newDatasetLabels);

          if (newLabels === oldLabels && oldData.datasets.length === newData.datasets.length) {
            newData.datasets.forEach(function (dataset, i) {
              var oldDatasetKeys = Object.keys(oldData.datasets[i]);
              var newDatasetKeys = Object.keys(dataset);
              var deletionKeys = oldDatasetKeys.filter(function (key) {
                return key !== '_meta' && newDatasetKeys.indexOf(key) === -1;
              });
              deletionKeys.forEach(function (deletionKey) {
                delete chart.data.datasets[i][deletionKey];
              });

              for (var attribute in dataset) {
                if (dataset.hasOwnProperty(attribute)) {
                  chart.data.datasets[i][attribute] = dataset[attribute];
                }
              }
            });

            if (newData.hasOwnProperty('labels')) {
              chart.data.labels = newData.labels;
            }

            if (newData.hasOwnProperty('xLabels')) {
              chart.data.xLabels = newData.xLabels;
            }

            if (newData.hasOwnProperty('yLabels')) {
              chart.data.yLabels = newData.yLabels;
            }

            chart.update();
          } else {
            chart.destroy();
            this.renderChart(this.chartData, this.options);
          }
        } else {
          this.renderChart(this.chartData, this.options);
        }
      }
    }
  }
};

/***/ }),
/* 6 */
/***/ (function(module, exports) {

module.exports = {
  props: {
    chartData: {
      required: true
    }
  },
  watch: {
    'chartData': {
      handler: function handler(newData, oldData) {
        if (oldData) {
          var chart = this.$data._chart;
          var newDatasetLabels = newData.datasets.map(function (dataset) {
            return dataset.label;
          });
          var oldDatasetLabels = oldData.datasets.map(function (dataset) {
            return dataset.label;
          });
          var oldLabels = JSON.stringify(oldDatasetLabels);
          var newLabels = JSON.stringify(newDatasetLabels);

          if (newLabels === oldLabels && oldData.datasets.length === newData.datasets.length) {
            newData.datasets.forEach(function (dataset, i) {
              var oldDatasetKeys = Object.keys(oldData.datasets[i]);
              var newDatasetKeys = Object.keys(dataset);
              var deletionKeys = oldDatasetKeys.filter(function (key) {
                return key !== '_meta' && newDatasetKeys.indexOf(key) === -1;
              });
              deletionKeys.forEach(function (deletionKey) {
                delete chart.data.datasets[i][deletionKey];
              });

              for (var attribute in dataset) {
                if (dataset.hasOwnProperty(attribute)) {
                  chart.data.datasets[i][attribute] = dataset[attribute];
                }
              }
            });

            if (newData.hasOwnProperty('labels')) {
              chart.data.labels = newData.labels;
            }

            if (newData.hasOwnProperty('xLabels')) {
              chart.data.xLabels = newData.xLabels;
            }

            if (newData.hasOwnProperty('yLabels')) {
              chart.data.yLabels = newData.yLabels;
            }

            chart.update();
          } else {
            chart.destroy();
            this.renderChart(this.chartData, this.options);
          }
        } else {
          this.renderChart(this.chartData, this.options);
        }
      }
    }
  }
};

/***/ }),
/* 7 */
/***/ (function(module, exports) {

module.exports = {"name":"vue-chartjs","version":"3.0.2","description":"Vue.js wrapper for chart.js for creating beautiful charts.","author":"Jakub Juszczak <jakub@posteo.de>","homepage":"http://vue-chartjs.org","license":"MIT","contributors":[{"name":"Thorsten Lünborg","web":"https://github.com/LinusBorg"},{"name":"Juan Carlos Alonso","web":"https://github.com/jcalonso"}],"maintainers":[{"name":"Jakub Juszczak","email":"jakub@posteo.de","web":"http://www.jakubjuszczak.de"}],"repository":{"type":"git","url":"git+ssh://git@github.com:apertureless/vue-chartjs.git"},"bugs":{"url":"https://github.com/apertureless/vue-chartjs/issues"},"keywords":["ChartJs","Vue","Visualisation","Wrapper","Charts"],"main":"dist/vue-chartjs.js","unpkg":"dist/vue-chartjs.min.js","module":"es/index.js","jsnext:main":"es/index.js","files":["src","dist","es"],"scripts":{"dev":"node build/dev-server.js","build":"yarn run release && yarn run build:es","build:es":"cross-env BABEL_ENV=es babel src --out-dir es","unit":"karma start test/unit/karma.conf.js --single-run","e2e":"node test/e2e/runner.js","test":"npm run unit","lint":"eslint --ext .js,.vue src test/unit/specs test/e2e/specs","release":"webpack --progress --hide-modules --config  ./build/webpack.release.js && NODE_ENV=production webpack --progress --hide-modules --config  ./build/webpack.release.min.js","prepublishOnly":"yarn run lint && yarn run test && yarn run build"},"dependencies":{"lodash.merge":"^4.6.0"},"peerDependencies":{"chart.js":"2.7.x"},"devDependencies":{"@babel/cli":"^7.0.0-beta.31","@babel/core":"^7.0.0-beta.31","@babel/preset-env":"^7.0.0-beta.31","@babel/preset-stage-2":"^7.0.0-beta.31","babel-loader":"8.0.0-beta.0","chai":"^3.5.0","chart.js":"2.7.0","chromedriver":"^2.28.0","connect-history-api-fallback":"^1.1.0","cross-env":"^3.2.4","cross-spawn":"^5.1.0","css-loader":"^0.28.0","eslint":"^3.19.0","eslint-config-standard":"^10.2.1","eslint-friendly-formatter":"^2.0.7","eslint-loader":"^1.7.1","eslint-plugin-html":"^2.0.1","eslint-plugin-import":"^2.2.0","eslint-plugin-node":"^4.2.2","eslint-plugin-promise":"^3.5.0","eslint-plugin-standard":"^3.0.1","eventsource-polyfill":"^0.9.6","express":"^4.15.2","extract-text-webpack-plugin":"^3.0.1","file-loader":"^0.10.1","friendly-errors-webpack-plugin":"^1.6.1","function-bind":"^1.0.2","html-webpack-plugin":"^2.28.0","http-proxy-middleware":"^0.17.4","inject-loader":"^3.0.0","isparta":"^4.0.0","jasmine-core":"^2.5.2","json-loader":"^0.5.4","karma":"^1.5.0","karma-coverage":"^1.1.1","karma-jasmine":"^1.0.2","karma-mocha":"^1.2.0","karma-phantomjs-launcher":"^1.0.4","karma-phantomjs-shim":"^1.4.0","karma-sinon-chai":"^1.2.0","karma-sourcemap-loader":"^0.3.7","karma-spec-reporter":"0.0.30","karma-webpack":"2","lolex":"^1.6.0","mocha":"^3.1.0","nightwatch":"^0.9.14","opn":"^5.1.0","ora":"^1.2.0","phantomjs-prebuilt":"^2.1.13","portfinder":"^1.0.13","selenium-server":"^3.3.1","shelljs":"^0.7.7","sinon":"^2.1.0","sinon-chai":"^2.9.0","url-loader":"^0.5.8","vue":"2.5.2","vue-hot-reload-api":"2.1.0","vue-html-loader":"^1.2.4","vue-loader":"^13.3.0","vue-style-loader":"3.0.1","vue-template-compiler":"2.5.2","webpack":"^3.7.1","webpack-dev-middleware":"^1.10.1","webpack-hot-middleware":"^2.17.1","webpack-merge":"^4.1.0"},"engines":{"node":">=6.9.0","npm":">= 3.0.0"},"browserify":{"transform":["babelify"]},"greenkeeper":{"ignore":["extract-text-webpack-plugin","karma-webpack","webpack","webpack-merge"]}}

/***/ })
/******/ ]);
});