var fontawesome = (function () {
'use strict';

var NAMESPACE_IDENTIFIER = '___FONT_AWESOME___';
var UNITS_IN_GRID = 16;
var DEFAULT_FAMILY_PREFIX = 'fa';
var DEFAULT_REPLACEMENT_CLASS = 'svg-inline--fa';

var PRODUCTION = typeof process !== 'undefined' && process.env && "production" === 'production';

var oneToTen = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
var oneToTwenty = oneToTen.concat([11, 12, 13, 14, 15, 16, 17, 18, 19, 20]);

var ATTRIBUTES_WATCHED_FOR_MUTATION = ['data-prefix', 'data-icon', 'data-fa-transform', 'data-fa-compose'];

var RESERVED_CLASSES = ['xs', 'sm', 'lg', 'fw', 'ul', 'li', 'border', 'pull-left', 'pull-right', 'spin', 'pulse', 'rotate-90', 'rotate-180', 'rotate-270', 'flip-horizontal', 'flip-vertical', 'stack', 'stack-1x', 'stack-2x', 'inverse', 'layers', 'layers-text', 'layers-counter'].concat(oneToTen.map(function (n) {
  return n + 'x';
})).concat(oneToTwenty.map(function (n) {
  return 'w-' + n;
}));

var _extends = Object.assign || function (target) {
  for (var i = 1; i < arguments.length; i++) {
    var source = arguments[i];

    for (var key in source) {
      if (Object.prototype.hasOwnProperty.call(source, key)) {
        target[key] = source[key];
      }
    }
  }

  return target;
};













var objectWithoutProperties = function (obj, keys) {
  var target = {};

  for (var i in obj) {
    if (keys.indexOf(i) >= 0) continue;
    if (!Object.prototype.hasOwnProperty.call(obj, i)) continue;
    target[i] = obj[i];
  }

  return target;
};







var slicedToArray = function () {
  function sliceIterator(arr, i) {
    var _arr = [];
    var _n = true;
    var _d = false;
    var _e = undefined;

    try {
      for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) {
        _arr.push(_s.value);

        if (i && _arr.length === i) break;
      }
    } catch (err) {
      _d = true;
      _e = err;
    } finally {
      try {
        if (!_n && _i["return"]) _i["return"]();
      } finally {
        if (_d) throw _e;
      }
    }

    return _arr;
  }

  return function (arr, i) {
    if (Array.isArray(arr)) {
      return arr;
    } else if (Symbol.iterator in Object(arr)) {
      return sliceIterator(arr, i);
    } else {
      throw new TypeError("Invalid attempt to destructure non-iterable instance");
    }
  };
}();











var toArray = function (arr) {
  return Array.isArray(arr) ? arr : Array.from(arr);
};

var toConsumableArray = function (arr) {
  if (Array.isArray(arr)) {
    for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) arr2[i] = arr[i];

    return arr2;
  } else {
    return Array.from(arr);
  }
};

var _default = _extends({
  familyPrefix: DEFAULT_FAMILY_PREFIX,
  replacementClass: DEFAULT_REPLACEMENT_CLASS,
  autoReplaceSvg: true,
  autoAddCss: true,
  autoA11y: true,
  observeMutations: true,
  keepOriginalSource: true,
  measurePerformance: false,
  showMissingIcons: true
}, window.FontAwesomeConfig || {});

if (!_default.autoReplaceSvg) _default.observeMutations = false;

var config = _extends({}, _default);

window.FontAwesomeConfig = config;

function update(newConfig) {
  var validKeys = Object.keys(config);

  Object.keys(newConfig).forEach(function (configKey) {
    if (~validKeys.indexOf(configKey)) {
      config[configKey] = newConfig[configKey];
    }
  });
}

var w = window || {};

if (!w[NAMESPACE_IDENTIFIER]) w[NAMESPACE_IDENTIFIER] = {};
if (!w[NAMESPACE_IDENTIFIER].packs) w[NAMESPACE_IDENTIFIER].packs = {};
if (!w[NAMESPACE_IDENTIFIER].hooks) w[NAMESPACE_IDENTIFIER].hooks = {};
if (!w[NAMESPACE_IDENTIFIER].shims) w[NAMESPACE_IDENTIFIER].shims = [];

var namespace = w[NAMESPACE_IDENTIFIER];

function isReserved(name) {
  return ~RESERVED_CLASSES.indexOf(name);
}

function bunker(fn) {
  try {
    fn();
  } catch (e) {
    
  }
}

function insertStyle(css) {
  if (!css) {
    return;
  }

  if (typeof window === 'undefined') {
    return;
  }

  var style = document.createElement('style');

  style.setAttribute('type', 'text/css');
  style.innerHTML = css;
  document.head.appendChild(style);

  return css;
}

var _uniqueId = 0;

function nextUniqueId() {
  _uniqueId++;

  return _uniqueId;
}

function toArray$1(obj) {
  var array = [];

  for (var i = (obj || []).length >>> 0; i--;) {
    array[i] = obj[i];
  }

  return array;
}

function getIconName(familyPrefix, cls) {
  var parts = cls.split('-');
  var prefix = parts[0];
  var iconName = parts.slice(1).join('-');

  if (prefix === familyPrefix && iconName !== '' && !isReserved(iconName)) {
    return iconName;
  } else {
    return null;
  }
}

function htmlEscape(str) {
  return str.replace(/&/g, '&amp;').replace(/"/g, '&quot;').replace(/'/g, '&#39;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
}

function joinAttributes(attributes) {
  return Object.keys(attributes).reduce(function (acc, attributeName) {
    return acc + (attributeName + '="' + attributes[attributeName] + '" ');
  }, '');
}

function joinStyles(styles) {
  return Object.keys(styles).reduce(function (acc, styleName) {
    return acc + (styleName + ': ' + styles[styleName] + ';');
  }, '');
}

function toHtml(abstractNodes) {
  var tag = abstractNodes.tag,
      _abstractNodes$attrib = abstractNodes.attributes,
      attributes = _abstractNodes$attrib === undefined ? {} : _abstractNodes$attrib,
      _abstractNodes$childr = abstractNodes.children,
      children = _abstractNodes$childr === undefined ? [] : _abstractNodes$childr;


  if (typeof abstractNodes === 'string') {
    return htmlEscape(abstractNodes);
  } else {
    return '<' + tag + ' ' + joinAttributes(attributes) + '>' + children.map(toHtml).join('') + '</' + tag + '>';
  }
}

var _window$navigator$use = window.navigator.userAgent;
var userAgent = _window$navigator$use === undefined ? '' : _window$navigator$use;


var IS_BROWSER = !!window;

var IS_IE = ~userAgent.indexOf('MSIE') || ~userAgent.indexOf('Trident/');

function MissingIcon(error) {
  this.name = 'MissingIcon';
  this.message = error || 'Icon unavailable';
  this.stack = new Error().stack;
}

MissingIcon.prototype = Object.create(Error.prototype);
MissingIcon.prototype.constructor = MissingIcon;

var FILL = { fill: 'currentColor' };
var ANIMATION_BASE = {
  attributeType: 'XML',
  repeatCount: 'indefinite',
  dur: '2s'
};
var RING = {
  tag: 'path',
  attributes: _extends({}, FILL, {
    d: 'M156.5,447.7l-12.6,29.5c-18.7-9.5-35.9-21.2-51.5-34.9l22.7-22.7C127.6,430.5,141.5,440,156.5,447.7z M40.6,272H8.5 c1.4,21.2,5.4,41.7,11.7,61.1L50,321.2C45.1,305.5,41.8,289,40.6,272z M40.6,240c1.4-18.8,5.2-37,11.1-54.1l-29.5-12.6 C14.7,194.3,10,216.7,8.5,240H40.6z M64.3,156.5c7.8-14.9,17.2-28.8,28.1-41.5L69.7,92.3c-13.7,15.6-25.5,32.8-34.9,51.5 L64.3,156.5z M397,419.6c-13.9,12-29.4,22.3-46.1,30.4l11.9,29.8c20.7-9.9,39.8-22.6,56.9-37.6L397,419.6z M115,92.4 c13.9-12,29.4-22.3,46.1-30.4l-11.9-29.8c-20.7,9.9-39.8,22.6-56.8,37.6L115,92.4z M447.7,355.5c-7.8,14.9-17.2,28.8-28.1,41.5 l22.7,22.7c13.7-15.6,25.5-32.9,34.9-51.5L447.7,355.5z M471.4,272c-1.4,18.8-5.2,37-11.1,54.1l29.5,12.6 c7.5-21.1,12.2-43.5,13.6-66.8H471.4z M321.2,462c-15.7,5-32.2,8.2-49.2,9.4v32.1c21.2-1.4,41.7-5.4,61.1-11.7L321.2,462z M240,471.4c-18.8-1.4-37-5.2-54.1-11.1l-12.6,29.5c21.1,7.5,43.5,12.2,66.8,13.6V471.4z M462,190.8c5,15.7,8.2,32.2,9.4,49.2h32.1 c-1.4-21.2-5.4-41.7-11.7-61.1L462,190.8z M92.4,397c-12-13.9-22.3-29.4-30.4-46.1l-29.8,11.9c9.9,20.7,22.6,39.8,37.6,56.9 L92.4,397z M272,40.6c18.8,1.4,36.9,5.2,54.1,11.1l12.6-29.5C317.7,14.7,295.3,10,272,8.5V40.6z M190.8,50 c15.7-5,32.2-8.2,49.2-9.4V8.5c-21.2,1.4-41.7,5.4-61.1,11.7L190.8,50z M442.3,92.3L419.6,115c12,13.9,22.3,29.4,30.5,46.1 l29.8-11.9C470,128.5,457.3,109.4,442.3,92.3z M397,92.4l22.7-22.7c-15.6-13.7-32.8-25.5-51.5-34.9l-12.6,29.5 C370.4,72.1,384.4,81.5,397,92.4z'
  })
};
var OPACITY_ANIMATE = _extends({}, ANIMATION_BASE, {
  attributeName: 'opacity'
});
var DOT = {
  tag: 'circle',
  attributes: _extends({}, FILL, {
    cx: '256',
    cy: '364',
    r: '28'
  }),
  children: [{ tag: 'animate', attributes: _extends({}, ANIMATION_BASE, { attributeName: 'r', values: '28;14;28;28;14;28;' }) }, { tag: 'animate', attributes: _extends({}, OPACITY_ANIMATE, { values: '1;0;1;1;0;1;' }) }]
};
var QUESTION = {
  tag: 'path',
  attributes: _extends({}, FILL, {
    opacity: '1',
    d: 'M263.7,312h-16c-6.6,0-12-5.4-12-12c0-71,77.4-63.9,77.4-107.8c0-20-17.8-40.2-57.4-40.2c-29.1,0-44.3,9.6-59.2,28.7 c-3.9,5-11.1,6-16.2,2.4l-13.1-9.2c-5.6-3.9-6.9-11.8-2.6-17.2c21.2-27.2,46.4-44.7,91.2-44.7c52.3,0,97.4,29.8,97.4,80.2 c0,67.6-77.4,63.5-77.4,107.8C275.7,306.6,270.3,312,263.7,312z'
  }),
  children: [{ tag: 'animate', attributes: _extends({}, OPACITY_ANIMATE, { values: '1;0;0;0;0;1;' }) }]
};
var EXCLAMATION = {
  tag: 'path',
  attributes: _extends({}, FILL, {
    opacity: '0',
    d: 'M232.5,134.5l7,168c0.3,6.4,5.6,11.5,12,11.5h9c6.4,0,11.7-5.1,12-11.5l7-168c0.3-6.8-5.2-12.5-12-12.5h-23 C237.7,122,232.2,127.7,232.5,134.5z'
  }),
  children: [{ tag: 'animate', attributes: _extends({}, OPACITY_ANIMATE, { values: '0;0;1;1;0;0;' }) }]
};

var missing = { tag: 'g', children: [RING, DOT, QUESTION, EXCLAMATION] };

var ALL_SPACE = {
  x: 0,
  y: 0,
  width: '100%',
  height: '100%'
};

var makeIconComposition = function (_ref) {
  var main = _ref.main,
      compose = _ref.compose,
      transform = _ref.transform;
  var mainWidth = main.width,
      mainPath = main.icon;
  var composeWidth = compose.width,
      composePath = compose.icon;


  var groupTranslate = 'translate(' + transform.x * 32 + ', ' + transform.y * 32 + ') ';
  var groupScale = 'scale(' + transform.size / 16 * (transform.flipX ? -1 : 1) + ', ' + transform.size / 16 * (transform.flipY ? -1 : 1) + ') ';
  var groupRotate = 'rotate(' + transform.rotate + ' 0 0)';
  var groupTransform = {
    transform: groupTranslate + ' ' + groupScale + ' ' + groupRotate
  };
  var mainTransform = {
    transform: 'translate(' + mainWidth / 2 * -1 + ' -256)'
  };
  var maskRect = {
    tag: 'rect',
    attributes: _extends({}, ALL_SPACE, {
      fill: 'white'
    })
  };
  var maskInnerGroup = {
    tag: 'g',
    attributes: _extends({}, groupTransform),
    children: [{ tag: 'path', attributes: _extends({}, mainPath.attributes, mainTransform, { fill: 'black' }) }]
  };
  var maskOuterGroup = {
    tag: 'g',
    attributes: {
      transform: 'translate(' + composeWidth / 2 + ' 256)'
    },
    children: [maskInnerGroup]
  };
  var maskId = 'mask-' + nextUniqueId();
  var clipId = 'clip-' + nextUniqueId();
  var mask = {
    tag: 'mask',
    attributes: _extends({}, ALL_SPACE, {
      id: maskId,
      maskUnits: 'userSpaceOnUse',
      maskContentUnits: 'userSpaceOnUse'
    }),
    children: [maskRect, maskOuterGroup]
  };
  var defs = {
    tag: 'defs',
    children: [{ tag: 'clipPath', attributes: { id: clipId }, children: [composePath] }, mask]
  };

  return [defs, { tag: 'rect', attributes: _extends({ fill: 'currentColor', 'clip-path': 'url(#' + clipId + ')', mask: 'url(#' + maskId + ')' }, ALL_SPACE) }];
};

var d = UNITS_IN_GRID;
var packs$1 = namespace.packs;


var meaninglessTransform = {
  size: 16,
  x: 0,
  y: 0,
  rotate: 0,
  flipX: false,
  flipY: false
};

function transformIsMeaningful(transform) {
  return transform.size !== meaninglessTransform.size || transform.x !== meaninglessTransform.x || transform.y !== meaninglessTransform.y || transform.rotate !== meaninglessTransform.rotate || transform.flipX || transform.flipY;
}

function transformToCss(transform) {
  var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
  var _options$startCentere = options.startCentered,
      startCentered = _options$startCentere === undefined ? false : _options$startCentere,
      _options$width = options.width,
      width = _options$width === undefined ? d : _options$width,
      _options$height = options.height,
      height = _options$height === undefined ? d : _options$height;


  var val = '';

  if (startCentered && IS_IE) {
    val += 'translate(' + (transform.x / d - width / 2) + 'em, ' + (transform.y / d - height / 2) + 'em) ';
  } else if (startCentered) {
    val += 'translate(calc(-50% + ' + transform.x / d + 'em), calc(-50% + ' + transform.y / d + 'em)) ';
  } else {
    val += 'translate(' + transform.x / d + 'em, ' + transform.y / d + 'em) ';
  }

  val += 'scale(' + transform.size / d * (transform.flipX ? -1 : 1) + ', ' + transform.size / d * (transform.flipY ? -1 : 1) + ') ';
  val += 'rotate(' + transform.rotate + 'deg) ';

  return val;
}

function findIcon(iconName, prefix) {
  var val = {
    found: false,
    width: 512,
    height: 512,
    icon: missing
  };

  if (iconName && prefix && packs$1[prefix] && packs$1[prefix][iconName]) {
    var _packs$prefix$iconNam = toArray(packs$1[prefix][iconName]),
        width = _packs$prefix$iconNam[0],
        height = _packs$prefix$iconNam[1],
        _l = _packs$prefix$iconNam[2],
        _u = _packs$prefix$iconNam[3],
        vectorData = _packs$prefix$iconNam.slice(4); // eslint-disable-line no-unused-vars

    val = {
      found: true,
      width: width,
      height: height,
      icon: { tag: 'path', attributes: { fill: 'currentColor', d: vectorData[0] } }
    };
  } else if (iconName && prefix && !config.showMissingIcons) {
    throw new MissingIcon('Icon is missing for prefix ' + prefix + ' with icon name ' + iconName);
  }

  return val;
}

function makeInlineSvgAbstract(params) {
  var _params$icons = params.icons,
      mainIcon = _params$icons.main,
      composeIcon = _params$icons.compose,
      prefix = params.prefix,
      iconName = params.iconName,
      transform = params.transform,
      title = params.title,
      extra = params.extra;

  var _ref = composeIcon.found ? composeIcon : mainIcon,
      width = _ref.width,
      height = _ref.height;

  var widthClass = 'fa-w-' + Math.ceil(width / height * 16);
  var attrClass = [config.replacementClass, iconName ? config.familyPrefix + '-' + iconName : '', widthClass].concat(extra.classes).join(' ');

  var attributes = _extends({}, extra.attributes, {
    'data-prefix': prefix,
    'data-icon': iconName,
    'class': attrClass,
    'role': 'img',
    'xmlns': 'http://www.w3.org/2000/svg',
    'viewBox': '0 0 ' + width + ' ' + height
  });

  var children = [];

  if (title) children.push({ tag: 'title', attributes: { id: attributes['aria-labelledby'] || 'title-' + nextUniqueId() }, children: [title] });

  if (composeIcon.found && mainIcon.found) {
    children.push.apply(children, toConsumableArray(makeIconComposition({ main: mainIcon, compose: composeIcon, transform: transform })));
  } else {
    var styles = _extends({}, extra.styles);

    if (transformIsMeaningful(transform)) {
      styles['transform'] = transformToCss(transform);
      styles['-webkit-transform'] = styles['transform'];
    }

    var styleString = joinStyles(styles);

    if (styleString.length > 0) {
      attributes['style'] = styleString;
    }

    children.push(mainIcon.icon);
  }

  return [{
    tag: 'svg',
    attributes: attributes,
    children: children
  }];
}

function makeLayersTextAbstract(params) {
  var content = params.content,
      width = params.width,
      height = params.height,
      transform = params.transform,
      title = params.title,
      extra = params.extra;


  var attributes = _extends({}, extra.attributes, title ? { 'title': title } : {}, {
    'class': extra.classes.join(' ')
  });

  var styles = _extends({}, extra.styles);

  if (transformIsMeaningful(transform)) {
    styles['transform'] = transformToCss(transform, { startCentered: true, width: width, height: height });
    styles['-webkit-transform'] = styles['transform'];
  }

  var styleString = joinStyles(styles);

  if (styleString.length > 0) {
    attributes['style'] = styleString;
  }

  var val = [];

  val.push({
    tag: 'span',
    attributes: attributes,
    children: [content]
  });

  if (title) {
    val.push({ tag: 'span', attributes: { class: 'sr-only' }, children: [title] });
  }

  return val;
}

function makeInlineSvgHtml(params) {
  var prefix = params.prefix,
      iconName = params.iconName,
      compose = params.compose;


  var abstract = makeInlineSvgAbstract(_extends({}, params, {
    icons: {
      main: findIcon(iconName, prefix),
      compose: findIcon(compose.iconName, compose.prefix)
    }
  }));

  return abstract.map(function (a) {
    return toHtml(a);
  }).join('\n');
}

function makeLayersTextHtml(params) {
  var abstract = makeLayersTextAbstract(params);

  return abstract.map(function (a) {
    return toHtml(a);
  }).join('\n');
}

var noop = function noop() {};
var p = config.measurePerformance && performance && performance.mark && performance.measure ? performance : { mark: noop, measure: noop };
var preamble = 'FA "5.0.0-beta3"';

var begin = function begin(name) {
  p.mark(preamble + ' ' + name + ' begins');
  return function () {
    return end(name);
  };
};

var end = function end(name) {
  p.mark(preamble + ' ' + name + ' ends');
  p.measure(preamble + ' ' + name, preamble + ' ' + name + ' begins', preamble + ' ' + name + ' ends');
};

var perf = { begin: begin, end: end };

function isReplaced(node) {
  var nodeClass = node.getAttribute ? node.getAttribute('class') : null;

  if (nodeClass) {
    return ~nodeClass.toString().indexOf(config.replacementClass) || ~nodeClass.toString().indexOf('fa-layers-text');
  } else {
    return false;
  }
}

function perform(mutations, callback) {
  window.requestAnimationFrame(function () {
    var end = perf.begin('mutate');

    mutations.map(function (mutation) {
      var _mutation = slicedToArray(mutation, 2),
          node = _mutation[0],
          newOuterHTML = _mutation[1];

      if (node.parentNode) node.outerHTML = newOuterHTML + (config.keepOriginalSource && node.tagName.toLowerCase() !== 'svg' ? '<!-- ' + node.outerHTML + ' -->' : '');
    });

    if (typeof callback === 'function') {
      callback();
    }

    end();
  });
}

function observe(options) {
  var treeCallback = options.treeCallback,
      nodeCallback = options.nodeCallback;

  var mo = new MutationObserver(function (objects) {
    toArray$1(objects).forEach(function (mutationRecord) {
      if (mutationRecord.type === 'childList' && mutationRecord.addedNodes.length > 0 && !isReplaced(mutationRecord.addedNodes[0])) {
        treeCallback(mutationRecord.target);
      }

      if (mutationRecord.type === 'attributes' && isReplaced(mutationRecord.target) && ~ATTRIBUTES_WATCHED_FOR_MUTATION.indexOf(mutationRecord.attributeName)) {
        nodeCallback(mutationRecord.target);
      }
    });
  });

  mo.observe(document.getElementsByTagName('body')[0], {
    childList: true, attributes: true, characterData: true, subtree: true
  });
}

var styleParser = function (node) {
  var style = node.getAttribute('style');

  var val = [];

  if (style) {
    val = style.split(';').reduce(function (acc, style) {
      var _style$split = style.split(':'),
          _style$split2 = toArray(_style$split),
          prop = _style$split2[0],
          value = _style$split2.slice(1);

      if (prop && value.length > 0) {
        acc[prop] = value.join(':').trim();
      }

      return acc;
    }, {});
  }

  return val;
};

/**
 * 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 == null ? 0 : array.length;

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

/**
 * Creates a base function for methods like `_.forIn` and `_.forOwn`.
 *
 * @private
 * @param {boolean} [fromRight] Specify iterating from right to left.
 * @returns {Function} Returns the new base function.
 */
function createBaseFor(fromRight) {
  return function(object, iteratee, keysFunc) {
    var index = -1,
        iterable = Object(object),
        props = keysFunc(object),
        length = props.length;

    while (length--) {
      var key = props[fromRight ? length : ++index];
      if (iteratee(iterable[key], key, iterable) === false) {
        break;
      }
    }
    return object;
  };
}

/**
 * The base implementation of `baseForOwn` which iterates over `object`
 * properties returned by `keysFunc` and invokes `iteratee` for each property.
 * Iteratee functions may exit iteration early by explicitly returning `false`.
 *
 * @private
 * @param {Object} object The object to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @param {Function} keysFunc The function to get the keys of `object`.
 * @returns {Object} Returns `object`.
 */
var baseFor = createBaseFor();

/**
 * 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;
}

/** 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')();

/** Built-in value references. */
var Symbol$1 = root.Symbol;

/** Used for built-in method references. */
var objectProto$2 = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty$2 = objectProto$2.hasOwnProperty;

/**
 * Used to resolve the
 * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
 * of values.
 */
var nativeObjectToString = objectProto$2.toString;

/** Built-in value references. */
var symToStringTag$1 = Symbol$1 ? Symbol$1.toStringTag : undefined;

/**
 * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.
 *
 * @private
 * @param {*} value The value to query.
 * @returns {string} Returns the raw `toStringTag`.
 */
function getRawTag(value) {
  var isOwn = hasOwnProperty$2.call(value, symToStringTag$1),
      tag = value[symToStringTag$1];

  try {
    value[symToStringTag$1] = undefined;
    var unmasked = true;
  } catch (e) {}

  var result = nativeObjectToString.call(value);
  if (unmasked) {
    if (isOwn) {
      value[symToStringTag$1] = tag;
    } else {
      delete value[symToStringTag$1];
    }
  }
  return result;
}

/** Used for built-in method references. */
var objectProto$3 = Object.prototype;

/**
 * Used to resolve the
 * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
 * of values.
 */
var nativeObjectToString$1 = objectProto$3.toString;

/**
 * Converts `value` to a string using `Object.prototype.toString`.
 *
 * @private
 * @param {*} value The value to convert.
 * @returns {string} Returns the converted string.
 */
function objectToString(value) {
  return nativeObjectToString$1.call(value);
}

/** `Object#toString` result references. */
var nullTag = '[object Null]';
var undefinedTag = '[object Undefined]';

/** Built-in value references. */
var symToStringTag = Symbol$1 ? Symbol$1.toStringTag : undefined;

/**
 * The base implementation of `getTag` without fallbacks for buggy environments.
 *
 * @private
 * @param {*} value The value to query.
 * @returns {string} Returns the `toStringTag`.
 */
function baseGetTag(value) {
  if (value == null) {
    return value === undefined ? undefinedTag : nullTag;
  }
  return (symToStringTag && symToStringTag in Object(value))
    ? getRawTag(value)
    : objectToString(value);
}

/**
 * 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 != null && typeof value == 'object';
}

/** `Object#toString` result references. */
var argsTag = '[object Arguments]';

/**
 * The base implementation of `_.isArguments`.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is an `arguments` object,
 */
function baseIsArguments(value) {
  return isObjectLike(value) && baseGetTag(value) == argsTag;
}

/** Used for built-in method references. */
var objectProto$1 = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty$1 = objectProto$1.hasOwnProperty;

/** Built-in value references. */
var propertyIsEnumerable = objectProto$1.propertyIsEnumerable;

/**
 * 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
 */
var isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) {
  return isObjectLike(value) && hasOwnProperty$1.call(value, 'callee') &&
    !propertyIsEnumerable.call(value, 'callee');
};

/**
 * 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;

/**
 * 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;
}

/** 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;

/** Built-in value references. */
var Buffer = moduleExports ? root.Buffer : undefined;

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined;

/**
 * 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;

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

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

/**
 * 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);
}

/** Used as references for various `Number` constants. */
var MAX_SAFE_INTEGER$1 = 9007199254740991;

/**
 * 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$1;
}

/** `Object#toString` result references. */
var argsTag$1 = '[object Arguments]';
var arrayTag = '[object Array]';
var boolTag = '[object Boolean]';
var dateTag = '[object Date]';
var errorTag = '[object Error]';
var funcTag = '[object Function]';
var mapTag = '[object Map]';
var numberTag = '[object Number]';
var objectTag = '[object Object]';
var regexpTag = '[object RegExp]';
var setTag = '[object Set]';
var stringTag = '[object String]';
var weakMapTag = '[object WeakMap]';

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

/** 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$1] = 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;

/**
 * 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[baseGetTag(value)];
}

/**
 * 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);
  };
}

/** Detect free variable `exports`. */
var freeExports$1 = typeof exports == 'object' && exports && !exports.nodeType && exports;

/** Detect free variable `module`. */
var freeModule$1 = freeExports$1 && typeof module == 'object' && module && !module.nodeType && module;

/** Detect the popular CommonJS extension `module.exports`. */
var moduleExports$1 = freeModule$1 && freeModule$1.exports === freeExports$1;

/** Detect free variable `process` from Node.js. */
var freeProcess = moduleExports$1 && freeGlobal.process;

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

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

/**
 * 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;

/** Used for built-in method references. */
var objectProto = Object.prototype;

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

/**
 * 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) {
  var isArr = isArray(value),
      isArg = !isArr && isArguments(value),
      isBuff = !isArr && !isArg && isBuffer(value),
      isType = !isArr && !isArg && !isBuff && isTypedArray(value),
      skipIndexes = isArr || isArg || isBuff || isType,
      result = skipIndexes ? baseTimes(value.length, String) : [],
      length = result.length;

  for (var key in value) {
    if ((inherited || hasOwnProperty.call(value, key)) &&
        !(skipIndexes && (
           // Safari 9 has enumerable `arguments.length` in strict mode.
           key == 'length' ||
           // Node.js 0.10 has enumerable non-index properties on buffers.
           (isBuff && (key == 'offset' || key == 'parent')) ||
           // PhantomJS 2 has enumerable non-index properties on typed arrays.
           (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) ||
           // Skip index properties.
           isIndex(key, length)
        ))) {
      result.push(key);
    }
  }
  return result;
}

/** Used for built-in method references. */
var objectProto$5 = Object.prototype;

/**
 * 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$5;

  return value === proto;
}

/**
 * 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));
  };
}

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeKeys = overArg(Object.keys, Object);

/** Used for built-in method references. */
var objectProto$4 = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty$3 = objectProto$4.hasOwnProperty;

/**
 * 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$3.call(object, key) && key != 'constructor') {
      result.push(key);
    }
  }
  return result;
}

/**
 * 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 != null && (type == 'object' || type == 'function');
}

/** `Object#toString` result references. */
var asyncTag = '[object AsyncFunction]';
var funcTag$1 = '[object Function]';
var genTag = '[object GeneratorFunction]';
var proxyTag = '[object Proxy]';

/**
 * 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) {
  if (!isObject(value)) {
    return false;
  }
  // The use of `Object#toString` avoids issues with the `typeof` operator
  // in Safari 9 which returns 'object' for typed arrays and other constructors.
  var tag = baseGetTag(value);
  return tag == funcTag$1 || tag == genTag || tag == asyncTag || tag == proxyTag;
}

/**
 * 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);
}

/**
 * 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);
}

/**
 * The base implementation of `_.forOwn` without support for iteratee shorthands.
 *
 * @private
 * @param {Object} object The object to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {Object} Returns `object`.
 */
function baseForOwn(object, iteratee) {
  return object && baseFor(object, iteratee, keys);
}

/**
 * Creates a `baseEach` or `baseEachRight` function.
 *
 * @private
 * @param {Function} eachFunc The function to iterate over a collection.
 * @param {boolean} [fromRight] Specify iterating from right to left.
 * @returns {Function} Returns the new base function.
 */
function createBaseEach(eachFunc, fromRight) {
  return function(collection, iteratee) {
    if (collection == null) {
      return collection;
    }
    if (!isArrayLike(collection)) {
      return eachFunc(collection, iteratee);
    }
    var length = collection.length,
        index = fromRight ? length : -1,
        iterable = Object(collection);

    while ((fromRight ? index-- : ++index < length)) {
      if (iteratee(iterable[index], index, iterable) === false) {
        break;
      }
    }
    return collection;
  };
}

/**
 * The base implementation of `_.forEach` without support for iteratee shorthands.
 *
 * @private
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {Array|Object} Returns `collection`.
 */
var baseEach = createBaseEach(baseForOwn);

/**
 * Removes all key-value entries from the list cache.
 *
 * @private
 * @name clear
 * @memberOf ListCache
 */
function listCacheClear() {
  this.__data__ = [];
  this.size = 0;
}

/**
 * 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);
}

/**
 * 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;
}

/** Used for built-in method references. */
var arrayProto = Array.prototype;

/** Built-in value references. */
var splice = arrayProto.splice;

/**
 * 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);
  }
  --this.size;
  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) {
    ++this.size;
    data.push([key, value]);
  } else {
    data[index][1] = value;
  }
  return this;
}

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

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

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

/**
 * Removes all key-value entries from the stack.
 *
 * @private
 * @name clear
 * @memberOf Stack
 */
function stackClear() {
  this.__data__ = new ListCache;
  this.size = 0;
}

/**
 * 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) {
  var data = this.__data__,
      result = data['delete'](key);

  this.size = data.size;
  return result;
}

/**
 * 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);
}

/** 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) : '';
}());

/**
 * 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);
}

/** Used for built-in method references. */
var funcProto$1 = Function.prototype;

/** Used to resolve the decompiled source of functions. */
var funcToString$1 = funcProto$1.toString;

/**
 * Converts `func` to its source code.
 *
 * @private
 * @param {Function} func The function to convert.
 * @returns {string} Returns the source code.
 */
function toSource(func) {
  if (func != null) {
    try {
      return funcToString$1.call(func);
    } catch (e) {}
    try {
      return (func + '');
    } catch (e) {}
  }
  return '';
}

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

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

/** Used for built-in method references. */
var funcProto = Function.prototype;
var objectProto$6 = Object.prototype;

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

/** Used to check objects for own properties. */
var hasOwnProperty$4 = objectProto$6.hasOwnProperty;

/** Used to detect if a method is native. */
var reIsNative = RegExp('^' +
  funcToString.call(hasOwnProperty$4).replace(reRegExpChar, '\\$&')
  .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$'
);

/**
 * 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) ? reIsNative : reIsHostCtor;
  return pattern.test(toSource(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];
}

/**
 * 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;
}

/* Built-in method references that are verified to be native. */
var Map = getNative(root, 'Map');

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

/**
 * Removes all key-value entries from the hash.
 *
 * @private
 * @name clear
 * @memberOf Hash
 */
function hashClear() {
  this.__data__ = nativeCreate ? nativeCreate(null) : {};
  this.size = 0;
}

/**
 * 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) {
  var result = this.has(key) && delete this.__data__[key];
  this.size -= result ? 1 : 0;
  return result;
}

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

/** Used for built-in method references. */
var objectProto$7 = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty$5 = objectProto$7.hasOwnProperty;

/**
 * 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$5.call(data, key) ? data[key] : undefined;
}

/** Used for built-in method references. */
var objectProto$8 = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty$6 = objectProto$8.hasOwnProperty;

/**
 * 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$6.call(data, key);
}

/** Used to stand-in for `undefined` hash values. */
var HASH_UNDEFINED$1 = '__lodash_hash_undefined__';

/**
 * 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__;
  this.size += this.has(key) ? 0 : 1;
  data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED$1 : value;
  return this;
}

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

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

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

/**
 * Removes all key-value entries from the map.
 *
 * @private
 * @name clear
 * @memberOf MapCache
 */
function mapCacheClear() {
  this.size = 0;
  this.__data__ = {
    'hash': new Hash,
    'map': new (Map || ListCache),
    'string': new Hash
  };
}

/**
 * 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);
}

/**
 * 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;
}

/**
 * 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) {
  var result = getMapData(this, key)['delete'](key);
  this.size -= result ? 1 : 0;
  return result;
}

/**
 * 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) {
  var data = getMapData(this, key),
      size = data.size;

  data.set(key, value);
  this.size += data.size == size ? 0 : 1;
  return this;
}

/**
 * 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 == null ? 0 : entries.length;

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

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

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

/**
 * 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 data = this.__data__;
  if (data instanceof ListCache) {
    var pairs = data.__data__;
    if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {
      pairs.push([key, value]);
      this.size = ++data.size;
      return this;
    }
    data = this.__data__ = new MapCache(pairs);
  }
  data.set(key, value);
  this.size = data.size;
  return this;
}

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

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

/** Used to stand-in for `undefined` hash values. */
var HASH_UNDEFINED$2 = '__lodash_hash_undefined__';

/**
 * Adds `value` to the array cache.
 *
 * @private
 * @name add
 * @memberOf SetCache
 * @alias push
 * @param {*} value The value to cache.
 * @returns {Object} Returns the cache instance.
 */
function setCacheAdd(value) {
  this.__data__.set(value, HASH_UNDEFINED$2);
  return this;
}

/**
 * Checks if `value` is in the array cache.
 *
 * @private
 * @name has
 * @memberOf SetCache
 * @param {*} value The value to search for.
 * @returns {number} Returns `true` if `value` is found, else `false`.
 */
function setCacheHas(value) {
  return this.__data__.has(value);
}

/**
 *
 * Creates an array cache object to store unique values.
 *
 * @private
 * @constructor
 * @param {Array} [values] The values to cache.
 */
function SetCache(values) {
  var index = -1,
      length = values == null ? 0 : values.length;

  this.__data__ = new MapCache;
  while (++index < length) {
    this.add(values[index]);
  }
}

// Add methods to `SetCache`.
SetCache.prototype.add = SetCache.prototype.push = setCacheAdd;
SetCache.prototype.has = setCacheHas;

/**
 * A specialized version of `_.some` for arrays without support for iteratee
 * shorthands.
 *
 * @private
 * @param {Array} [array] The array to iterate over.
 * @param {Function} predicate The function invoked per iteration.
 * @returns {boolean} Returns `true` if any element passes the predicate check,
 *  else `false`.
 */
function arraySome(array, predicate) {
  var index = -1,
      length = array == null ? 0 : array.length;

  while (++index < length) {
    if (predicate(array[index], index, array)) {
      return true;
    }
  }
  return false;
}

/**
 * Checks if a `cache` value for `key` exists.
 *
 * @private
 * @param {Object} cache The cache to query.
 * @param {string} key The key of the entry to check.
 * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
 */
function cacheHas(cache, key) {
  return cache.has(key);
}

/** Used to compose bitmasks for value comparisons. */
var COMPARE_PARTIAL_FLAG$2 = 1;
var COMPARE_UNORDERED_FLAG$1 = 2;

/**
 * A specialized version of `baseIsEqualDeep` for arrays with support for
 * partial deep comparisons.
 *
 * @private
 * @param {Array} array The array to compare.
 * @param {Array} other The other array to compare.
 * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
 * @param {Function} customizer The function to customize comparisons.
 * @param {Function} equalFunc The function to determine equivalents of values.
 * @param {Object} stack Tracks traversed `array` and `other` objects.
 * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.
 */
function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {
  var isPartial = bitmask & COMPARE_PARTIAL_FLAG$2,
      arrLength = array.length,
      othLength = other.length;

  if (arrLength != othLength && !(isPartial && othLength > arrLength)) {
    return false;
  }
  // Assume cyclic values are equal.
  var stacked = stack.get(array);
  if (stacked && stack.get(other)) {
    return stacked == other;
  }
  var index = -1,
      result = true,
      seen = (bitmask & COMPARE_UNORDERED_FLAG$1) ? new SetCache : undefined;

  stack.set(array, other);
  stack.set(other, array);

  // Ignore non-index properties.
  while (++index < arrLength) {
    var arrValue = array[index],
        othValue = other[index];

    if (customizer) {
      var compared = isPartial
        ? customizer(othValue, arrValue, index, other, array, stack)
        : customizer(arrValue, othValue, index, array, other, stack);
    }
    if (compared !== undefined) {
      if (compared) {
        continue;
      }
      result = false;
      break;
    }
    // Recursively compare arrays (susceptible to call stack limits).
    if (seen) {
      if (!arraySome(other, function(othValue, othIndex) {
            if (!cacheHas(seen, othIndex) &&
                (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {
              return seen.push(othIndex);
            }
          })) {
        result = false;
        break;
      }
    } else if (!(
          arrValue === othValue ||
            equalFunc(arrValue, othValue, bitmask, customizer, stack)
        )) {
      result = false;
      break;
    }
  }
  stack['delete'](array);
  stack['delete'](other);
  return result;
}

/** Built-in value references. */
var Uint8Array = root.Uint8Array;

/**
 * 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;
}

/**
 * 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 to compose bitmasks for value comparisons. */
var COMPARE_PARTIAL_FLAG$3 = 1;
var COMPARE_UNORDERED_FLAG$2 = 2;

/** `Object#toString` result references. */
var boolTag$1 = '[object Boolean]';
var dateTag$1 = '[object Date]';
var errorTag$1 = '[object Error]';
var mapTag$1 = '[object Map]';
var numberTag$1 = '[object Number]';
var regexpTag$1 = '[object RegExp]';
var setTag$1 = '[object Set]';
var stringTag$1 = '[object String]';
var symbolTag = '[object Symbol]';

var arrayBufferTag$1 = '[object ArrayBuffer]';
var dataViewTag$1 = '[object DataView]';

/** Used to convert symbols to primitives and strings. */
var symbolProto = Symbol$1 ? Symbol$1.prototype : undefined;
var symbolValueOf = symbolProto ? symbolProto.valueOf : undefined;

/**
 * A specialized version of `baseIsEqualDeep` for comparing objects of
 * the same `toStringTag`.
 *
 * **Note:** This function only supports comparing values with tags of
 * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.
 *
 * @private
 * @param {Object} object The object to compare.
 * @param {Object} other The other object to compare.
 * @param {string} tag The `toStringTag` of the objects to compare.
 * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
 * @param {Function} customizer The function to customize comparisons.
 * @param {Function} equalFunc The function to determine equivalents of values.
 * @param {Object} stack Tracks traversed `object` and `other` objects.
 * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
 */
function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {
  switch (tag) {
    case dataViewTag$1:
      if ((object.byteLength != other.byteLength) ||
          (object.byteOffset != other.byteOffset)) {
        return false;
      }
      object = object.buffer;
      other = other.buffer;

    case arrayBufferTag$1:
      if ((object.byteLength != other.byteLength) ||
          !equalFunc(new Uint8Array(object), new Uint8Array(other))) {
        return false;
      }
      return true;

    case boolTag$1:
    case dateTag$1:
    case numberTag$1:
      // Coerce booleans to `1` or `0` and dates to milliseconds.
      // Invalid dates are coerced to `NaN`.
      return eq(+object, +other);

    case errorTag$1:
      return object.name == other.name && object.message == other.message;

    case regexpTag$1:
    case stringTag$1:
      // Coerce regexes to strings and treat strings, primitives and objects,
      // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring
      // for more details.
      return object == (other + '');

    case mapTag$1:
      var convert = mapToArray;

    case setTag$1:
      var isPartial = bitmask & COMPARE_PARTIAL_FLAG$3;
      convert || (convert = setToArray);

      if (object.size != other.size && !isPartial) {
        return false;
      }
      // Assume cyclic values are equal.
      var stacked = stack.get(object);
      if (stacked) {
        return stacked == other;
      }
      bitmask |= COMPARE_UNORDERED_FLAG$2;

      // Recursively compare objects (susceptible to call stack limits).
      stack.set(object, other);
      var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack);
      stack['delete'](object);
      return result;

    case symbolTag:
      if (symbolValueOf) {
        return symbolValueOf.call(object) == symbolValueOf.call(other);
      }
  }
  return false;
}

/**
 * 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;
}

/**
 * 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));
}

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

  while (++index < length) {
    var value = array[index];
    if (predicate(value, index, array)) {
      result[resIndex++] = value;
    }
  }
  return result;
}

/**
 * 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 [];
}

/** Used for built-in method references. */
var objectProto$11 = Object.prototype;

/** Built-in value references. */
var propertyIsEnumerable$1 = objectProto$11.propertyIsEnumerable;

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeGetSymbols = Object.getOwnPropertySymbols;

/**
 * Creates an array of the own enumerable symbols of `object`.
 *
 * @private
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of symbols.
 */
var getSymbols = !nativeGetSymbols ? stubArray : function(object) {
  if (object == null) {
    return [];
  }
  object = Object(object);
  return arrayFilter(nativeGetSymbols(object), function(symbol) {
    return propertyIsEnumerable$1.call(object, symbol);
  });
};

/**
 * 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);
}

/** Used to compose bitmasks for value comparisons. */
var COMPARE_PARTIAL_FLAG$4 = 1;

/** Used for built-in method references. */
var objectProto$10 = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty$8 = objectProto$10.hasOwnProperty;

/**
 * A specialized version of `baseIsEqualDeep` for objects with support for
 * partial deep comparisons.
 *
 * @private
 * @param {Object} object The object to compare.
 * @param {Object} other The other object to compare.
 * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
 * @param {Function} customizer The function to customize comparisons.
 * @param {Function} equalFunc The function to determine equivalents of values.
 * @param {Object} stack Tracks traversed `object` and `other` objects.
 * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
 */
function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {
  var isPartial = bitmask & COMPARE_PARTIAL_FLAG$4,
      objProps = getAllKeys(object),
      objLength = objProps.length,
      othProps = getAllKeys(other),
      othLength = othProps.length;

  if (objLength != othLength && !isPartial) {
    return false;
  }
  var index = objLength;
  while (index--) {
    var key = objProps[index];
    if (!(isPartial ? key in other : hasOwnProperty$8.call(other, key))) {
      return false;
    }
  }
  // Assume cyclic values are equal.
  var stacked = stack.get(object);
  if (stacked && stack.get(other)) {
    return stacked == other;
  }
  var result = true;
  stack.set(object, other);
  stack.set(other, object);

  var skipCtor = isPartial;
  while (++index < objLength) {
    key = objProps[index];
    var objValue = object[key],
        othValue = other[key];

    if (customizer) {
      var compared = isPartial
        ? customizer(othValue, objValue, key, other, object, stack)
        : customizer(objValue, othValue, key, object, other, stack);
    }
    // Recursively compare objects (susceptible to call stack limits).
    if (!(compared === undefined
          ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack))
          : compared
        )) {
      result = false;
      break;
    }
    skipCtor || (skipCtor = key == 'constructor');
  }
  if (result && !skipCtor) {
    var objCtor = object.constructor,
        othCtor = other.constructor;

    // Non `Object` object instances with different constructors are not equal.
    if (objCtor != othCtor &&
        ('constructor' in object && 'constructor' in other) &&
        !(typeof objCtor == 'function' && objCtor instanceof objCtor &&
          typeof othCtor == 'function' && othCtor instanceof othCtor)) {
      result = false;
    }
  }
  stack['delete'](object);
  stack['delete'](other);
  return result;
}

/* Built-in method references that are verified to be native. */
var DataView = getNative(root, 'DataView');

/* Built-in method references that are verified to be native. */
var Promise$1 = getNative(root, 'Promise');

/* Built-in method references that are verified to be native. */
var Set = getNative(root, 'Set');

/* Built-in method references that are verified to be native. */
var WeakMap = getNative(root, 'WeakMap');

/** `Object#toString` result references. */
var mapTag$2 = '[object Map]';
var objectTag$2 = '[object Object]';
var promiseTag = '[object Promise]';
var setTag$2 = '[object Set]';
var weakMapTag$1 = '[object WeakMap]';

var dataViewTag$2 = '[object DataView]';

/** Used to detect maps, sets, and weakmaps. */
var dataViewCtorString = toSource(DataView);
var mapCtorString = toSource(Map);
var promiseCtorString = toSource(Promise$1);
var setCtorString = toSource(Set);
var weakMapCtorString = toSource(WeakMap);

/**
 * 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 and promises in Node.js < 6.
if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag$2) ||
    (Map && getTag(new Map) != mapTag$2) ||
    (Promise$1 && getTag(Promise$1.resolve()) != promiseTag) ||
    (Set && getTag(new Set) != setTag$2) ||
    (WeakMap && getTag(new WeakMap) != weakMapTag$1)) {
  getTag = function(value) {
    var result = baseGetTag(value),
        Ctor = result == objectTag$2 ? value.constructor : undefined,
        ctorString = Ctor ? toSource(Ctor) : '';

    if (ctorString) {
      switch (ctorString) {
        case dataViewCtorString: return dataViewTag$2;
        case mapCtorString: return mapTag$2;
        case promiseCtorString: return promiseTag;
        case setCtorString: return setTag$2;
        case weakMapCtorString: return weakMapTag$1;
      }
    }
    return result;
  };
}

var getTag$1 = getTag;

/** Used to compose bitmasks for value comparisons. */
var COMPARE_PARTIAL_FLAG$1 = 1;

/** `Object#toString` result references. */
var argsTag$2 = '[object Arguments]';
var arrayTag$1 = '[object Array]';
var objectTag$1 = '[object Object]';

/** Used for built-in method references. */
var objectProto$9 = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty$7 = objectProto$9.hasOwnProperty;

/**
 * A specialized version of `baseIsEqual` for arrays and objects which performs
 * deep comparisons and tracks traversed objects enabling objects with circular
 * references to be compared.
 *
 * @private
 * @param {Object} object The object to compare.
 * @param {Object} other The other object to compare.
 * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
 * @param {Function} customizer The function to customize comparisons.
 * @param {Function} equalFunc The function to determine equivalents of values.
 * @param {Object} [stack] Tracks traversed `object` and `other` objects.
 * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
 */
function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {
  var objIsArr = isArray(object),
      othIsArr = isArray(other),
      objTag = objIsArr ? arrayTag$1 : getTag$1(object),
      othTag = othIsArr ? arrayTag$1 : getTag$1(other);

  objTag = objTag == argsTag$2 ? objectTag$1 : objTag;
  othTag = othTag == argsTag$2 ? objectTag$1 : othTag;

  var objIsObj = objTag == objectTag$1,
      othIsObj = othTag == objectTag$1,
      isSameTag = objTag == othTag;

  if (isSameTag && isBuffer(object)) {
    if (!isBuffer(other)) {
      return false;
    }
    objIsArr = true;
    objIsObj = false;
  }
  if (isSameTag && !objIsObj) {
    stack || (stack = new Stack);
    return (objIsArr || isTypedArray(object))
      ? equalArrays(object, other, bitmask, customizer, equalFunc, stack)
      : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);
  }
  if (!(bitmask & COMPARE_PARTIAL_FLAG$1)) {
    var objIsWrapped = objIsObj && hasOwnProperty$7.call(object, '__wrapped__'),
        othIsWrapped = othIsObj && hasOwnProperty$7.call(other, '__wrapped__');

    if (objIsWrapped || othIsWrapped) {
      var objUnwrapped = objIsWrapped ? object.value() : object,
          othUnwrapped = othIsWrapped ? other.value() : other;

      stack || (stack = new Stack);
      return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);
    }
  }
  if (!isSameTag) {
    return false;
  }
  stack || (stack = new Stack);
  return equalObjects(object, other, bitmask, customizer, equalFunc, stack);
}

/**
 * The base implementation of `_.isEqual` which supports partial comparisons
 * and tracks traversed objects.
 *
 * @private
 * @param {*} value The value to compare.
 * @param {*} other The other value to compare.
 * @param {boolean} bitmask The bitmask flags.
 *  1 - Unordered comparison
 *  2 - Partial comparison
 * @param {Function} [customizer] The function to customize comparisons.
 * @param {Object} [stack] Tracks traversed `value` and `other` objects.
 * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
 */
function baseIsEqual(value, other, bitmask, customizer, stack) {
  if (value === other) {
    return true;
  }
  if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) {
    return value !== value && other !== other;
  }
  return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);
}

/** Used to compose bitmasks for value comparisons. */
var COMPARE_PARTIAL_FLAG = 1;
var COMPARE_UNORDERED_FLAG = 2;

/**
 * The base implementation of `_.isMatch` without support for iteratee shorthands.
 *
 * @private
 * @param {Object} object The object to inspect.
 * @param {Object} source The object of property values to match.
 * @param {Array} matchData The property names, values, and compare flags to match.
 * @param {Function} [customizer] The function to customize comparisons.
 * @returns {boolean} Returns `true` if `object` is a match, else `false`.
 */
function baseIsMatch(object, source, matchData, customizer) {
  var index = matchData.length,
      length = index,
      noCustomizer = !customizer;

  if (object == null) {
    return !length;
  }
  object = Object(object);
  while (index--) {
    var data = matchData[index];
    if ((noCustomizer && data[2])
          ? data[1] !== object[data[0]]
          : !(data[0] in object)
        ) {
      return false;
    }
  }
  while (++index < length) {
    data = matchData[index];
    var key = data[0],
        objValue = object[key],
        srcValue = data[1];

    if (noCustomizer && data[2]) {
      if (objValue === undefined && !(key in object)) {
        return false;
      }
    } else {
      var stack = new Stack;
      if (customizer) {
        var result = customizer(objValue, srcValue, key, object, source, stack);
      }
      if (!(result === undefined
            ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack)
            : result
          )) {
        return false;
      }
    }
  }
  return true;
}

/**
 * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` if suitable for strict
 *  equality comparisons, else `false`.
 */
function isStrictComparable(value) {
  return value === value && !isObject(value);
}

/**
 * Gets the property names, values, and compare flags of `object`.
 *
 * @private
 * @param {Object} object The object to query.
 * @returns {Array} Returns the match data of `object`.
 */
function getMatchData(object) {
  var result = keys(object),
      length = result.length;

  while (length--) {
    var key = result[length],
        value = object[key];

    result[length] = [key, value, isStrictComparable(value)];
  }
  return result;
}

/**
 * A specialized version of `matchesProperty` for source values suitable
 * for strict equality comparisons, i.e. `===`.
 *
 * @private
 * @param {string} key The key of the property to get.
 * @param {*} srcValue The value to match.
 * @returns {Function} Returns the new spec function.
 */
function matchesStrictComparable(key, srcValue) {
  return function(object) {
    if (object == null) {
      return false;
    }
    return object[key] === srcValue &&
      (srcValue !== undefined || (key in Object(object)));
  };
}

/**
 * The base implementation of `_.matches` which doesn't clone `source`.
 *
 * @private
 * @param {Object} source The object of property values to match.
 * @returns {Function} Returns the new spec function.
 */
function baseMatches(source) {
  var matchData = getMatchData(source);
  if (matchData.length == 1 && matchData[0][2]) {
    return matchesStrictComparable(matchData[0][0], matchData[0][1]);
  }
  return function(object) {
    return object === source || baseIsMatch(object, source, matchData);
  };
}

/** `Object#toString` result references. */
var symbolTag$1 = '[object Symbol]';

/**
 * Checks if `value` is classified as a `Symbol` primitive or object.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.
 * @example
 *
 * _.isSymbol(Symbol.iterator);
 * // => true
 *
 * _.isSymbol('abc');
 * // => false
 */
function isSymbol(value) {
  return typeof value == 'symbol' ||
    (isObjectLike(value) && baseGetTag(value) == symbolTag$1);
}

/** Used to match property names within property paths. */
var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/;
var reIsPlainProp = /^\w*$/;

/**
 * Checks if `value` is a property name and not a property path.
 *
 * @private
 * @param {*} value The value to check.
 * @param {Object} [object] The object to query keys on.
 * @returns {boolean} Returns `true` if `value` is a property name, else `false`.
 */
function isKey(value, object) {
  if (isArray(value)) {
    return false;
  }
  var type = typeof value;
  if (type == 'number' || type == 'symbol' || type == 'boolean' ||
      value == null || isSymbol(value)) {
    return true;
  }
  return reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||
    (object != null && value in Object(object));
}

/** Error message constants. */
var FUNC_ERROR_TEXT = 'Expected a function';

/**
 * Creates a function that memoizes the result of `func`. If `resolver` is
 * provided, it determines the cache key for storing the result based on the
 * arguments provided to the memoized function. By default, the first argument
 * provided to the memoized function is used as the map cache key. The `func`
 * is invoked with the `this` binding of the memoized function.
 *
 * **Note:** The cache is exposed as the `cache` property on the memoized
 * function. Its creation may be customized by replacing the `_.memoize.Cache`
 * constructor with one whose instances implement the
 * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object)
 * method interface of `clear`, `delete`, `get`, `has`, and `set`.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Function
 * @param {Function} func The function to have its output memoized.
 * @param {Function} [resolver] The function to resolve the cache key.
 * @returns {Function} Returns the new memoized function.
 * @example
 *
 * var object = { 'a': 1, 'b': 2 };
 * var other = { 'c': 3, 'd': 4 };
 *
 * var values = _.memoize(_.values);
 * values(object);
 * // => [1, 2]
 *
 * values(other);
 * // => [3, 4]
 *
 * object.a = 2;
 * values(object);
 * // => [1, 2]
 *
 * // Modify the result cache.
 * values.cache.set(object, ['a', 'b']);
 * values(object);
 * // => ['a', 'b']
 *
 * // Replace `_.memoize.Cache`.
 * _.memoize.Cache = WeakMap;
 */
function memoize(func, resolver) {
  if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) {
    throw new TypeError(FUNC_ERROR_TEXT);
  }
  var memoized = function() {
    var args = arguments,
        key = resolver ? resolver.apply(this, args) : args[0],
        cache = memoized.cache;

    if (cache.has(key)) {
      return cache.get(key);
    }
    var result = func.apply(this, args);
    memoized.cache = cache.set(key, result) || cache;
    return result;
  };
  memoized.cache = new (memoize.Cache || MapCache);
  return memoized;
}

// Expose `MapCache`.
memoize.Cache = MapCache;

/** Used as the maximum memoize cache size. */
var MAX_MEMOIZE_SIZE = 500;

/**
 * A specialized version of `_.memoize` which clears the memoized function's
 * cache when it exceeds `MAX_MEMOIZE_SIZE`.
 *
 * @private
 * @param {Function} func The function to have its output memoized.
 * @returns {Function} Returns the new memoized function.
 */
function memoizeCapped(func) {
  var result = memoize(func, function(key) {
    if (cache.size === MAX_MEMOIZE_SIZE) {
      cache.clear();
    }
    return key;
  });

  var cache = result.cache;
  return result;
}

/** Used to match property names within property paths. */
var reLeadingDot = /^\./;
var rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g;

/** Used to match backslashes in property paths. */
var reEscapeChar = /\\(\\)?/g;

/**
 * Converts `string` to a property path array.
 *
 * @private
 * @param {string} string The string to convert.
 * @returns {Array} Returns the property path array.
 */
var stringToPath = memoizeCapped(function(string) {
  var result = [];
  if (reLeadingDot.test(string)) {
    result.push('');
  }
  string.replace(rePropName, function(match, number, quote, string) {
    result.push(quote ? string.replace(reEscapeChar, '$1') : (number || match));
  });
  return result;
});

/**
 * A specialized version of `_.map` 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 the new mapped array.
 */
function arrayMap(array, iteratee) {
  var index = -1,
      length = array == null ? 0 : array.length,
      result = Array(length);

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

/** Used as references for various `Number` constants. */
var INFINITY = 1 / 0;

/** Used to convert symbols to primitives and strings. */
var symbolProto$1 = Symbol$1 ? Symbol$1.prototype : undefined;
var symbolToString = symbolProto$1 ? symbolProto$1.toString : undefined;

/**
 * The base implementation of `_.toString` which doesn't convert nullish
 * values to empty strings.
 *
 * @private
 * @param {*} value The value to process.
 * @returns {string} Returns the string.
 */
function baseToString(value) {
  // Exit early for strings to avoid a performance hit in some environments.
  if (typeof value == 'string') {
    return value;
  }
  if (isArray(value)) {
    // Recursively convert values (susceptible to call stack limits).
    return arrayMap(value, baseToString) + '';
  }
  if (isSymbol(value)) {
    return symbolToString ? symbolToString.call(value) : '';
  }
  var result = (value + '');
  return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
}

/**
 * Converts `value` to a string. An empty string is returned for `null`
 * and `undefined` values. The sign of `-0` is preserved.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to convert.
 * @returns {string} Returns the converted string.
 * @example
 *
 * _.toString(null);
 * // => ''
 *
 * _.toString(-0);
 * // => '-0'
 *
 * _.toString([1, 2, 3]);
 * // => '1,2,3'
 */
function toString(value) {
  return value == null ? '' : baseToString(value);
}

/**
 * Casts `value` to a path array if it's not one.
 *
 * @private
 * @param {*} value The value to inspect.
 * @param {Object} [object] The object to query keys on.
 * @returns {Array} Returns the cast property path array.
 */
function castPath(value, object) {
  if (isArray(value)) {
    return value;
  }
  return isKey(value, object) ? [value] : stringToPath(toString(value));
}

/** Used as references for various `Number` constants. */
var INFINITY$1 = 1 / 0;

/**
 * Converts `value` to a string key if it's not a string or symbol.
 *
 * @private
 * @param {*} value The value to inspect.
 * @returns {string|symbol} Returns the key.
 */
function toKey(value) {
  if (typeof value == 'string' || isSymbol(value)) {
    return value;
  }
  var result = (value + '');
  return (result == '0' && (1 / value) == -INFINITY$1) ? '-0' : result;
}

/**
 * The base implementation of `_.get` without support for default values.
 *
 * @private
 * @param {Object} object The object to query.
 * @param {Array|string} path The path of the property to get.
 * @returns {*} Returns the resolved value.
 */
function baseGet(object, path) {
  path = castPath(path, object);

  var index = 0,
      length = path.length;

  while (object != null && index < length) {
    object = object[toKey(path[index++])];
  }
  return (index && index == length) ? object : undefined;
}

/**
 * Gets the value at `path` of `object`. If the resolved value is
 * `undefined`, the `defaultValue` is returned in its place.
 *
 * @static
 * @memberOf _
 * @since 3.7.0
 * @category Object
 * @param {Object} object The object to query.
 * @param {Array|string} path The path of the property to get.
 * @param {*} [defaultValue] The value returned for `undefined` resolved values.
 * @returns {*} Returns the resolved value.
 * @example
 *
 * var object = { 'a': [{ 'b': { 'c': 3 } }] };
 *
 * _.get(object, 'a[0].b.c');
 * // => 3
 *
 * _.get(object, ['a', '0', 'b', 'c']);
 * // => 3
 *
 * _.get(object, 'a.b.c', 'default');
 * // => 'default'
 */
function get$1(object, path, defaultValue) {
  var result = object == null ? undefined : baseGet(object, path);
  return result === undefined ? defaultValue : result;
}

/**
 * The base implementation of `_.hasIn` without support for deep paths.
 *
 * @private
 * @param {Object} [object] The object to query.
 * @param {Array|string} key The key to check.
 * @returns {boolean} Returns `true` if `key` exists, else `false`.
 */
function baseHasIn(object, key) {
  return object != null && key in Object(object);
}

/**
 * Checks if `path` exists on `object`.
 *
 * @private
 * @param {Object} object The object to query.
 * @param {Array|string} path The path to check.
 * @param {Function} hasFunc The function to check properties.
 * @returns {boolean} Returns `true` if `path` exists, else `false`.
 */
function hasPath(object, path, hasFunc) {
  path = castPath(path, object);

  var index = -1,
      length = path.length,
      result = false;

  while (++index < length) {
    var key = toKey(path[index]);
    if (!(result = object != null && hasFunc(object, key))) {
      break;
    }
    object = object[key];
  }
  if (result || ++index != length) {
    return result;
  }
  length = object == null ? 0 : object.length;
  return !!length && isLength(length) && isIndex(key, length) &&
    (isArray(object) || isArguments(object));
}

/**
 * Checks if `path` is a direct or inherited property of `object`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Object
 * @param {Object} object The object to query.
 * @param {Array|string} path The path to check.
 * @returns {boolean} Returns `true` if `path` exists, else `false`.
 * @example
 *
 * var object = _.create({ 'a': _.create({ 'b': 2 }) });
 *
 * _.hasIn(object, 'a');
 * // => true
 *
 * _.hasIn(object, 'a.b');
 * // => true
 *
 * _.hasIn(object, ['a', 'b']);
 * // => true
 *
 * _.hasIn(object, 'b');
 * // => false
 */
function hasIn(object, path) {
  return object != null && hasPath(object, path, baseHasIn);
}

/** Used to compose bitmasks for value comparisons. */
var COMPARE_PARTIAL_FLAG$5 = 1;
var COMPARE_UNORDERED_FLAG$3 = 2;

/**
 * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.
 *
 * @private
 * @param {string} path The path of the property to get.
 * @param {*} srcValue The value to match.
 * @returns {Function} Returns the new spec function.
 */
function baseMatchesProperty(path, srcValue) {
  if (isKey(path) && isStrictComparable(srcValue)) {
    return matchesStrictComparable(toKey(path), srcValue);
  }
  return function(object) {
    var objValue = get$1(object, path);
    return (objValue === undefined && objValue === srcValue)
      ? hasIn(object, path)
      : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG$5 | COMPARE_UNORDERED_FLAG$3);
  };
}

/**
 * This method returns the first argument it receives.
 *
 * @static
 * @since 0.1.0
 * @memberOf _
 * @category Util
 * @param {*} value Any value.
 * @returns {*} Returns `value`.
 * @example
 *
 * var object = { 'a': 1 };
 *
 * console.log(_.identity(object) === object);
 * // => true
 */
function identity(value) {
  return value;
}

/**
 * The base implementation of `_.property` without support for deep paths.
 *
 * @private
 * @param {string} key The key of the property to get.
 * @returns {Function} Returns the new accessor function.
 */
function baseProperty(key) {
  return function(object) {
    return object == null ? undefined : object[key];
  };
}

/**
 * A specialized version of `baseProperty` which supports deep paths.
 *
 * @private
 * @param {Array|string} path The path of the property to get.
 * @returns {Function} Returns the new accessor function.
 */
function basePropertyDeep(path) {
  return function(object) {
    return baseGet(object, path);
  };
}

/**
 * Creates a function that returns the value at `path` of a given object.
 *
 * @static
 * @memberOf _
 * @since 2.4.0
 * @category Util
 * @param {Array|string} path The path of the property to get.
 * @returns {Function} Returns the new accessor function.
 * @example
 *
 * var objects = [
 *   { 'a': { 'b': 2 } },
 *   { 'a': { 'b': 1 } }
 * ];
 *
 * _.map(objects, _.property('a.b'));
 * // => [2, 1]
 *
 * _.map(_.sortBy(objects, _.property(['a', 'b'])), 'a.b');
 * // => [1, 2]
 */
function property(path) {
  return isKey(path) ? baseProperty(toKey(path)) : basePropertyDeep(path);
}

/**
 * The base implementation of `_.iteratee`.
 *
 * @private
 * @param {*} [value=_.identity] The value to convert to an iteratee.
 * @returns {Function} Returns the iteratee.
 */
function baseIteratee(value) {
  // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.
  // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.
  if (typeof value == 'function') {
    return value;
  }
  if (value == null) {
    return identity;
  }
  if (typeof value == 'object') {
    return isArray(value)
      ? baseMatchesProperty(value[0], value[1])
      : baseMatches(value);
  }
  return property(value);
}

/**
 * The base implementation of `_.reduce` and `_.reduceRight`, without support
 * for iteratee shorthands, which iterates over `collection` using `eachFunc`.
 *
 * @private
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @param {*} accumulator The initial value.
 * @param {boolean} initAccum Specify using the first or last element of
 *  `collection` as the initial value.
 * @param {Function} eachFunc The function to iterate over `collection`.
 * @returns {*} Returns the accumulated value.
 */
function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) {
  eachFunc(collection, function(value, index, collection) {
    accumulator = initAccum
      ? (initAccum = false, value)
      : iteratee(accumulator, value, index, collection);
  });
  return accumulator;
}

/**
 * Reduces `collection` to a value which is the accumulated result of running
 * each element in `collection` thru `iteratee`, where each successive
 * invocation is supplied the return value of the previous. If `accumulator`
 * is not given, the first element of `collection` is used as the initial
 * value. The iteratee is invoked with four arguments:
 * (accumulator, value, index|key, collection).
 *
 * Many lodash methods are guarded to work as iteratees for methods like
 * `_.reduce`, `_.reduceRight`, and `_.transform`.
 *
 * The guarded methods are:
 * `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`,
 * and `sortBy`
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Collection
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function} [iteratee=_.identity] The function invoked per iteration.
 * @param {*} [accumulator] The initial value.
 * @returns {*} Returns the accumulated value.
 * @see _.reduceRight
 * @example
 *
 * _.reduce([1, 2], function(sum, n) {
 *   return sum + n;
 * }, 0);
 * // => 3
 *
 * _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {
 *   (result[value] || (result[value] = [])).push(key);
 *   return result;
 * }, {});
 * // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed)
 */
function reduce(collection, iteratee, accumulator) {
  var func = isArray(collection) ? arrayReduce : baseReduce,
      initAccum = arguments.length < 3;

  return func(collection, baseIteratee(iteratee, 4), accumulator, initAccum, baseEach);
}

var defineProperty$1 = (function() {
  try {
    var func = getNative(Object, 'defineProperty');
    func({}, '', {});
    return func;
  } catch (e) {}
}());

/**
 * The base implementation of `assignValue` and `assignMergeValue` without
 * value checks.
 *
 * @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 baseAssignValue(object, key, value) {
  if (key == '__proto__' && defineProperty$1) {
    defineProperty$1(object, key, {
      'configurable': true,
      'enumerable': true,
      'value': value,
      'writable': true
    });
  } else {
    object[key] = value;
  }
}

/**
 * Creates an object with the same keys as `object` and values generated
 * by running each own enumerable string keyed property of `object` thru
 * `iteratee`. The iteratee is invoked with three arguments:
 * (value, key, object).
 *
 * @static
 * @memberOf _
 * @since 2.4.0
 * @category Object
 * @param {Object} object The object to iterate over.
 * @param {Function} [iteratee=_.identity] The function invoked per iteration.
 * @returns {Object} Returns the new mapped object.
 * @see _.mapKeys
 * @example
 *
 * var users = {
 *   'fred':    { 'user': 'fred',    'age': 40 },
 *   'pebbles': { 'user': 'pebbles', 'age': 1 }
 * };
 *
 * _.mapValues(users, function(o) { return o.age; });
 * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
 *
 * // The `_.property` iteratee shorthand.
 * _.mapValues(users, 'age');
 * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
 */
function mapValues(object, iteratee) {
  var result = {};
  iteratee = baseIteratee(iteratee, 3);

  baseForOwn(object, function(value, key, object) {
    baseAssignValue(result, key, iteratee(value, key, object));
  });
  return result;
}

var packs$3 = namespace.packs;
var shims = namespace.shims;


var _byUnicode = {};
var _byLigature = {};
var _byOldName = {};

var build = function build() {
  _byUnicode = mapValues(packs$3, function (pack) {
    return reduce(pack, function (acc, icon, iconName) {
      acc[icon[3]] = iconName;

      return acc;
    }, {});
  });

  _byLigature = mapValues(packs$3, function (pack) {
    return reduce(pack, function (acc, icon, iconName) {
      var ligatures = icon[2];

      acc[iconName] = iconName;

      ligatures.forEach(function (ligature) {
        acc[ligature] = iconName;
      });

      return acc;
    }, {});
  });

  var hasRegular = 'far' in packs$3;

  _byOldName = reduce(shims, function (acc, shim) {
    var oldName = shim[0];
    var prefix = shim[1];
    var iconName = shim[2];

    if (prefix === 'far' && !hasRegular) {
      prefix = 'fa';
    }

    acc[oldName] = { prefix: prefix, iconName: iconName };

    return acc;
  }, {});
};

build();

function byUnicode(prefix, unicode) {
  return _byUnicode[prefix][unicode];
}

function byLigature(prefix, ligature) {
  return _byLigature[prefix][ligature];
}

function byOldName(name) {
  return _byOldName[name] || { prefix: null, iconName: null };
}

function toHex(unicode) {
  var result = '';

  for (var i = 0; i < unicode.length; i++) {
    var hex = unicode.charCodeAt(i).toString(16);
    result += ('000' + hex).slice(-4);
  }

  return result;
}

var packs$4 = namespace.packs;


var emptyCanonicalIcon = function emptyCanonicalIcon() {
  return { prefix: null, iconName: null, rest: [] };
};

function getCanonicalIcon(values) {
  return values.reduce(function (acc, cls) {
    var iconName = getIconName(config.familyPrefix, cls);

    if (packs$4[cls]) {
      acc.prefix = cls;
    } else if (iconName) {
      var shim = byOldName(iconName);

      acc.iconName = shim.iconName || iconName;
      acc.prefix = shim.prefix || acc.prefix;
    } else if (cls !== config.replacementClass && cls.indexOf('fa-w-') !== 0) {
      acc.rest.push(cls);
    }

    return acc;
  }, emptyCanonicalIcon());
}

var classParser = function (node) {
  var existingPrefix = node.getAttribute('data-prefix');
  var existingIconName = node.getAttribute('data-icon');

  var val = getCanonicalIcon(toArray$1(node.classList));

  if (existingPrefix && existingIconName) {
    val.prefix = existingPrefix;
    val.iconName = existingIconName;
  }

  if (val.prefix && node.innerText !== undefined && node.innerText.length > 1) {
    val.iconName = byLigature(val.prefix, node.innerText);
  } else if (val.prefix && node.innerText !== undefined && node.innerText.length === 1) {
    val.iconName = byUnicode(val.prefix, toHex(node.innerText));
  }

  return val;
};

var parseTransformString = function parseTransformString(transformString) {
  var transform = {
    size: 16,
    x: 0,
    y: 0,
    flipX: false,
    flipY: false,
    rotate: 0
  };

  if (!transformString) {
    return transform;
  } else {
    return transformString.toLowerCase().split(' ').reduce(function (acc, n) {
      var parts = n.toLowerCase().split('-');
      var first = parts[0];
      var rest = parts.slice(1).join('-');

      if (first && rest === 'h') {
        acc.flipX = true;
        return acc;
      }

      if (first && rest === 'v') {
        acc.flipY = true;
        return acc;
      }

      rest = parseFloat(rest);

      if (isNaN(rest)) {
        return acc;
      }

      switch (first) {
        case 'grow':
          acc.size = acc.size + rest;
          break;
        case 'shrink':
          acc.size = acc.size - rest;
          break;
        case 'left':
          acc.x = acc.x - rest;
          break;
        case 'right':
          acc.x = acc.x + rest;
          break;
        case 'up':
          acc.y = acc.y - rest;
          break;
        case 'down':
          acc.y = acc.y + rest;
          break;
        case 'rotate':
          acc.rotate = acc.rotate + rest;
          break;
      }

      return acc;
    }, transform);
  }
};

var transformParser = function (node) {
  return parseTransformString(node.getAttribute('data-fa-transform'));
};

var attributesParser = function (node) {
  var extraAttributes = toArray$1(node.attributes).reduce(function (acc, attr) {
    if (acc.name !== 'class' && acc.name !== 'style') {
      acc[attr.name] = attr.value;
    }
    return acc;
  }, {});

  var title = node.getAttribute('title');

  if (config.autoA11y) {
    if (title) {
      extraAttributes['aria-labelledby'] = config.replacementClass + '-title-' + nextUniqueId();
    } else {
      extraAttributes['aria-hidden'] = 'true';
    }
  }

  return extraAttributes;
};

var composeParser = function (node) {
  var compose = node.getAttribute('data-fa-compose');

  if (!compose) {
    return emptyCanonicalIcon();
  } else {
    return getCanonicalIcon(compose.split(' ').map(function (i) {
      return i.trim();
    }));
  }
};

function parseMeta(node) {
  var _classParser = classParser(node),
      iconName = _classParser.iconName,
      prefix = _classParser.prefix,
      extraClasses = _classParser.rest;

  var extraStyles = styleParser(node);
  var transform = transformParser(node);
  var extraAttributes = attributesParser(node);
  var compose = composeParser(node);

  return {
    iconName: iconName,
    title: node.getAttribute('title'),
    prefix: prefix,
    transform: transform,
    compose: compose,
    extra: {
      classes: extraClasses,
      styles: extraStyles,
      attributes: extraAttributes
    }
  };
}

var packs = namespace.packs;

var LAYERS_TEXT_CLASSNAME = 'fa-layers-text';

function generateSvgReplacementMutation(node, nodeMeta) {
  var iconName = nodeMeta.iconName,
      title = nodeMeta.title,
      prefix = nodeMeta.prefix,
      transform = nodeMeta.transform,
      compose = nodeMeta.compose,
      extra = nodeMeta.extra;


  return [node, makeInlineSvgHtml({
    prefix: prefix,
    iconName: iconName,
    transform: transform,
    compose: compose,
    title: title,
    extra: extra
  })];
}

function generateLayersText(node, nodeMeta) {
  var title = nodeMeta.title,
      transform = nodeMeta.transform,
      extra = nodeMeta.extra;


  var val = null;
  var width = null;
  var height = null;

  if (IS_IE) {
    var computedFontSize = parseInt(getComputedStyle(node).fontSize, 10);
    var boundingClientRect = node.getBoundingClientRect();
    width = boundingClientRect.width / computedFontSize;
    height = boundingClientRect.height / computedFontSize;
  }

  if (config.autoA11y && !title) {
    extra.attributes['aria-hidden'] = 'true';
  }

  val = [node, makeLayersTextHtml({
    content: node.innerHTML,
    width: width,
    height: height,
    transform: transform,
    title: title,
    extra: extra
  })];

  return val;
}

function generateMutation(node) {
  var nodeMeta = parseMeta(node);

  if (~nodeMeta.extra.classes.indexOf(LAYERS_TEXT_CLASSNAME)) {
    return generateLayersText(node, nodeMeta);
  } else {
    return generateSvgReplacementMutation(node, nodeMeta);
  }
}

function onTree(root) {
  var callback = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;

  var prefixes = Object.keys(packs);
  var prefixesDomQuery = ['.' + LAYERS_TEXT_CLASSNAME].concat(prefixes.map(function (p) {
    return '.' + p;
  })).join(', ');

  if (prefixesDomQuery.length === 0) {
    return;
  }

  var end = perf.begin('onTree');

  var mutations = toArray$1(root.querySelectorAll(prefixesDomQuery)).reduce(function (acc, node) {
    try {
      var mutation = generateMutation(node);

      if (mutation) {
        acc.push(mutation);
      }
    } catch (e) {
      if (!PRODUCTION) {
        if (e instanceof MissingIcon) {
          console.error(e);
        }
      }
    }

    return acc;
  }, []);

  end();

  perform(mutations, callback);
}

function onNode(node) {
  var callback = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;

  var mutation = generateMutation(node);

  if (mutation) {
    perform([mutation], callback);
  }
}

/*
object-assign
(c) Sindre Sorhus
@license MIT
*/

/* eslint-disable no-unused-vars */
var getOwnPropertySymbols = Object.getOwnPropertySymbols;
var hasOwnProperty$9 = Object.prototype.hasOwnProperty;
var propIsEnumerable = Object.prototype.propertyIsEnumerable;

function toObject(val) {
	if (val === null || val === undefined) {
		throw new TypeError('Object.assign cannot be called with null or undefined');
	}

	return Object(val);
}

function shouldUseNative() {
	try {
		if (!Object.assign) {
			return false;
		}

		// Detect buggy property enumeration order in older V8 versions.

		// https://bugs.chromium.org/p/v8/issues/detail?id=4118
		var test1 = new String('abc');  // eslint-disable-line no-new-wrappers
		test1[5] = 'de';
		if (Object.getOwnPropertyNames(test1)[0] === '5') {
			return false;
		}

		// https://bugs.chromium.org/p/v8/issues/detail?id=3056
		var test2 = {};
		for (var i = 0; i < 10; i++) {
			test2['_' + String.fromCharCode(i)] = i;
		}
		var order2 = Object.getOwnPropertyNames(test2).map(function (n) {
			return test2[n];
		});
		if (order2.join('') !== '0123456789') {
			return false;
		}

		// https://bugs.chromium.org/p/v8/issues/detail?id=3056
		var test3 = {};
		'abcdefghijklmnopqrst'.split('').forEach(function (letter) {
			test3[letter] = letter;
		});
		if (Object.keys(Object.assign({}, test3)).join('') !==
				'abcdefghijklmnopqrst') {
			return false;
		}

		return true;
	} catch (err) {
		// We don't expect any of the above to throw, but better to be safe.
		return false;
	}
}

var index = shouldUseNative() ? Object.assign : function (target, source) {
	var from;
	var to = toObject(target);
	var symbols;

	for (var s = 1; s < arguments.length; s++) {
		from = Object(arguments[s]);

		for (var key in from) {
			if (hasOwnProperty$9.call(from, key)) {
				to[key] = from[key];
			}
		}

		if (getOwnPropertySymbols) {
			symbols = getOwnPropertySymbols(from);
			for (var i = 0; i < symbols.length; i++) {
				if (propIsEnumerable.call(from, symbols[i])) {
					to[symbols[i]] = from[symbols[i]];
				}
			}
		}
	}

	return to;
};

var functions = [];
var listener = function listener() {
  document.removeEventListener('DOMContentLoaded', listener);
  loaded = 1;
  functions.map(function (fn) {
    return fn();
  });
};

var loaded = (document.documentElement.doScroll ? /^loaded|^c/ : /^loaded|^i|^c/).test(document.readyState);

if (!loaded) document.addEventListener('DOMContentLoaded', listener);

var domready = function (fn) {
  loaded ? setTimeout(fn, 0) : functions.push(fn);
};

var baseStyles = ".svg-inline--fa {\n  display: inline-block;\n  font-size: inherit;\n  height: 1em;\n  overflow: visible;\n  vertical-align: -12.5%; }\n  .svg-inline--fa.fa-lg {\n    vertical-align: -25%; }\n  .svg-inline--fa.fa-w-1 {\n    width: 0.0625em; }\n  .svg-inline--fa.fa-w-2 {\n    width: 0.125em; }\n  .svg-inline--fa.fa-w-3 {\n    width: 0.1875em; }\n  .svg-inline--fa.fa-w-4 {\n    width: 0.25em; }\n  .svg-inline--fa.fa-w-5 {\n    width: 0.3125em; }\n  .svg-inline--fa.fa-w-6 {\n    width: 0.375em; }\n  .svg-inline--fa.fa-w-7 {\n    width: 0.4375em; }\n  .svg-inline--fa.fa-w-8 {\n    width: 0.5em; }\n  .svg-inline--fa.fa-w-9 {\n    width: 0.5625em; }\n  .svg-inline--fa.fa-w-10 {\n    width: 0.625em; }\n  .svg-inline--fa.fa-w-11 {\n    width: 0.6875em; }\n  .svg-inline--fa.fa-w-12 {\n    width: 0.75em; }\n  .svg-inline--fa.fa-w-13 {\n    width: 0.8125em; }\n  .svg-inline--fa.fa-w-14 {\n    width: 0.875em; }\n  .svg-inline--fa.fa-w-15 {\n    width: 0.9375em; }\n  .svg-inline--fa.fa-w-16 {\n    width: 1em; }\n  .svg-inline--fa.fa-w-17 {\n    width: 1.0625em; }\n  .svg-inline--fa.fa-w-18 {\n    width: 1.125em; }\n  .svg-inline--fa.fa-w-19 {\n    width: 1.1875em; }\n  .svg-inline--fa.fa-w-20 {\n    width: 1.25em; }\n  .svg-inline--fa.fa-pull-left {\n    margin-right: .3em;\n    width: auto; }\n  .svg-inline--fa.fa-pull-right {\n    margin-left: .3em;\n    width: auto; }\n  .svg-inline--fa.fa-border {\n    height: 1.5em; }\n  .svg-inline--fa.fa-li {\n    top: auto;\n    width: 1.875em; }\n  .svg-inline--fa.fa-fw {\n    width: 1.25em; }\n\n.fa-layers svg.svg-inline--fa {\n  bottom: 0;\n  left: 0;\n  margin: auto;\n  position: absolute;\n  right: 0;\n  top: 0; }\n\n.fa-layers {\n  display: inline-block;\n  height: 1em;\n  position: relative;\n  text-align: center;\n  vertical-align: -12.5%;\n  width: 1em; }\n  .fa-layers svg.svg-inline--fa {\n    -webkit-transform-origin: center center;\n            transform-origin: center center; }\n\n.fa-layers-text, .fa-layers-counter {\n  display: inline-block;\n  position: absolute;\n  text-align: center; }\n\n.fa-layers-text {\n  left: 50%;\n  top: 50%;\n  -webkit-transform: translate(-50%, -50%);\n          transform: translate(-50%, -50%);\n  -webkit-transform-origin: center center;\n          transform-origin: center center; }\n\n.fa-layers-counter {\n  background-color: #ff253a;\n  border-radius: 1em;\n  color: #fff;\n  height: 1.5em;\n  line-height: 1;\n  max-width: 5em;\n  min-width: 1.5em;\n  overflow: hidden;\n  padding: .25em;\n  right: 0;\n  text-overflow: ellipsis;\n  top: 0;\n  -webkit-transform: scale(0.25);\n          transform: scale(0.25);\n  -webkit-transform-origin: top right;\n          transform-origin: top right; }\n\n.fa-layers-bottom-right {\n  bottom: 0;\n  right: 0;\n  top: auto;\n  -webkit-transform: scale(0.25);\n          transform: scale(0.25);\n  -webkit-transform-origin: bottom right;\n          transform-origin: bottom right; }\n\n.fa-layers-bottom-left {\n  bottom: 0;\n  left: 0;\n  right: auto;\n  top: auto;\n  -webkit-transform: scale(0.25);\n          transform: scale(0.25);\n  -webkit-transform-origin: bottom left;\n          transform-origin: bottom left; }\n\n.fa-layers-top-right {\n  right: 0;\n  top: 0;\n  -webkit-transform: scale(0.25);\n          transform: scale(0.25);\n  -webkit-transform-origin: top right;\n          transform-origin: top right; }\n\n.fa-layers-top-left {\n  left: 0;\n  right: auto;\n  top: 0;\n  -webkit-transform: scale(0.25);\n          transform: scale(0.25);\n  -webkit-transform-origin: top left;\n          transform-origin: top left; }\n\n.fa-lg {\n  font-size: 1.33333em;\n  line-height: 0.75em;\n  vertical-align: -15%; }\n\n.fa-xs {\n  font-size: .75em; }\n\n.fa-sm {\n  font-size: .875em; }\n\n.fa-1x {\n  font-size: 1em; }\n\n.fa-2x {\n  font-size: 2em; }\n\n.fa-3x {\n  font-size: 3em; }\n\n.fa-4x {\n  font-size: 4em; }\n\n.fa-5x {\n  font-size: 5em; }\n\n.fa-6x {\n  font-size: 6em; }\n\n.fa-7x {\n  font-size: 7em; }\n\n.fa-8x {\n  font-size: 8em; }\n\n.fa-9x {\n  font-size: 9em; }\n\n.fa-10x {\n  font-size: 10em; }\n\n.fa-fw {\n  text-align: center;\n  width: 1.25em; }\n\n.fa-ul {\n  list-style-type: none;\n  margin-left: 1.875em;\n  padding-left: 0; }\n  .fa-ul > li {\n    position: relative; }\n\n.fa-li {\n  left: -1.875em;\n  position: absolute;\n  text-align: center;\n  top: 0.14286em;\n  width: 1.875em; }\n  .fa-li.fa-lg {\n    left: -1.625em; }\n\n.fa-border {\n  border: solid 0.08em #eee;\n  border-radius: .1em;\n  padding: .2em .25em .15em; }\n\n.fa-pull-left {\n  float: left; }\n\n.fa-pull-right {\n  float: right; }\n\n.fa.fa-pull-left,\n.fas.fa-pull-left,\n.far.fa-pull-left,\n.fal.fa-pull-left,\n.fab.fa-pull-left {\n  margin-right: .3em; }\n\n.fa.fa-pull-right,\n.fas.fa-pull-right,\n.far.fa-pull-right,\n.fal.fa-pull-right,\n.fab.fa-pull-right {\n  margin-left: .3em; }\n\n.fa-spin {\n  -webkit-animation: fa-spin 2s infinite linear;\n          animation: fa-spin 2s infinite linear; }\n\n.fa-pulse {\n  -webkit-animation: fa-spin 1s infinite steps(8);\n          animation: fa-spin 1s infinite steps(8); }\n\n@-webkit-keyframes fa-spin {\n  0% {\n    -webkit-transform: rotate(0deg);\n            transform: rotate(0deg); }\n  100% {\n    -webkit-transform: rotate(360deg);\n            transform: rotate(360deg); } }\n\n@keyframes fa-spin {\n  0% {\n    -webkit-transform: rotate(0deg);\n            transform: rotate(0deg); }\n  100% {\n    -webkit-transform: rotate(360deg);\n            transform: rotate(360deg); } }\n\n.fa-rotate-90 {\n  -ms-filter: \"progid:DXImageTransform.Microsoft.BasicImage(rotation=1)\";\n  -webkit-transform: rotate(90deg);\n          transform: rotate(90deg); }\n\n.fa-rotate-180 {\n  -ms-filter: \"progid:DXImageTransform.Microsoft.BasicImage(rotation=2)\";\n  -webkit-transform: rotate(180deg);\n          transform: rotate(180deg); }\n\n.fa-rotate-270 {\n  -ms-filter: \"progid:DXImageTransform.Microsoft.BasicImage(rotation=3)\";\n  -webkit-transform: rotate(270deg);\n          transform: rotate(270deg); }\n\n.fa-flip-horizontal {\n  -ms-filter: \"progid:DXImageTransform.Microsoft.BasicImage(rotation=0, mirror=1)\";\n  -webkit-transform: scale(-1, 1);\n          transform: scale(-1, 1); }\n\n.fa-flip-vertical {\n  -ms-filter: \"progid:DXImageTransform.Microsoft.BasicImage(rotation=2, mirror=1)\";\n  -webkit-transform: scale(1, -1);\n          transform: scale(1, -1); }\n\n:root .fa-rotate-90,\n:root .fa-rotate-180,\n:root .fa-rotate-270,\n:root .fa-flip-horizontal,\n:root .fa-flip-vertical {\n  -webkit-filter: none;\n          filter: none; }\n\n.fa-stack {\n  display: inline-block;\n  height: 2em;\n  position: relative;\n  width: 2em; }\n\n.fa-stack-1x,\n.fa-stack-2x {\n  bottom: 0;\n  left: 0;\n  margin: auto;\n  position: absolute;\n  right: 0;\n  top: 0; }\n\n.svg-inline--fa.fa-stack-1x {\n  height: 1em;\n  width: 1em; }\n\n.svg-inline--fa.fa-stack-2x {\n  height: 2em;\n  width: 2em; }\n\n.fa-inverse {\n  color: #fff; }\n\n.sr-only {\n  border: 0;\n  clip: rect(0, 0, 0, 0);\n  height: 1px;\n  margin: -1px;\n  overflow: hidden;\n  padding: 0;\n  position: absolute;\n  width: 1px; }\n\n.sr-only-focusable:active, .sr-only-focusable:focus {\n  clip: auto;\n  height: auto;\n  margin: 0;\n  overflow: visible;\n  position: static;\n  width: auto; }\n";

var styles = function () {
  var dfp = DEFAULT_FAMILY_PREFIX;
  var drc = DEFAULT_REPLACEMENT_CLASS;
  var fp = config.familyPrefix;
  var rc = config.replacementClass;
  var s = baseStyles;

  if (fp !== dfp || rc !== drc) {
    var dPatt = new RegExp('\\.' + dfp + '\\-', 'g');
    var rPatt = new RegExp('\\.' + drc, 'g');

    s = s.replace(dPatt, '.' + fp + '-').replace(rPatt, '.' + rc);
  }

  return s;
};

function prepIcon(icon) {
  var _icon = toArray(icon),
      width = _icon[0],
      height = _icon[1],
      _l = _icon[2],
      _u = _icon[3],
      vectorData = _icon.slice(4); // eslint-disable-line no-unused-vars

  return {
    found: true,
    width: width,
    height: height,
    icon: { tag: 'path', attributes: { fill: 'currentColor', d: vectorData[0] } }
  };
}

var _stylesInserted = false;

function ensureStyles() {
  if (!config.autoAddCss) {
    return;
  }

  if (!_stylesInserted) {
    insertStyle(styles());
  }

  _stylesInserted = true;
}

function apiObject(val, abstractCreator) {
  Object.defineProperty(val, 'abstract', {
    get: abstractCreator
  });

  Object.defineProperty(val, 'html', {
    get: function get$$1() {
      return val.abstract.map(function (a) {
        return toHtml(a);
      });
    }
  });

  Object.defineProperty(val, 'node', {
    get: function get$$1() {
      var container = document.createElement('div');
      container.innerHTML = val.html;
      return container.children;
    }
  });

  return val;
}

var api$1 = {
  dom: {
    i2svg: function i2svg() {
      var params = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};

      ensureStyles();

      var _params$node = params.node,
          node = _params$node === undefined ? document : _params$node,
          _params$callback = params.callback,
          callback = _params$callback === undefined ? function () {} : _params$callback;


      onTree(node, callback);
    },

    styles: styles,

    insertStyles: function insertStyles() {
      insertStyle(styles());
    }
  },

  parse: {
    transform: function transform(transformString) {
      return parseTransformString(transformString);
    },

    iconFromPack: function iconFromPack(iconString) {
      var _getCanonicalIcon = getCanonicalIcon(iconString.split(' ')),
          prefix = _getCanonicalIcon.prefix,
          iconName = _getCanonicalIcon.iconName;

      if (namespace.packs && namespace.packs[prefix] && namespace.packs[prefix][iconName]) {
        return {
          prefix: prefix,
          iconName: iconName,
          icon: namespace.packs[prefix][iconName]
        };
      }
    }
  },

  icon: function icon(iconDefinition) {
    var params = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
    var _params$transform = params.transform,
        transform = _params$transform === undefined ? meaninglessTransform : _params$transform,
        _params$compose = params.compose,
        compose = _params$compose === undefined ? null : _params$compose,
        _params$title = params.title,
        title = _params$title === undefined ? null : _params$title,
        _params$classes = params.classes,
        classes = _params$classes === undefined ? [] : _params$classes,
        _params$attributes = params.attributes,
        attributes = _params$attributes === undefined ? {} : _params$attributes,
        _params$style = params.style,
        style = _params$style === undefined ? {} : _params$style;
    var prefix = iconDefinition.prefix,
        iconName = iconDefinition.iconName,
        icon = iconDefinition.icon;


    return apiObject(_extends({ type: 'icon' }, iconDefinition), function () {
      ensureStyles();

      if (config.autoA11y) {
        if (title) {
          attributes['aria-labelledby'] = config.replacementClass + '-title-' + nextUniqueId();
        } else {
          attributes['aria-hidden'] = 'true';
        }
      }

      return makeInlineSvgAbstract({
        icons: {
          main: prepIcon(icon),
          compose: compose ? prepIcon(compose.icon) : { found: false, width: null, height: null, icon: {} }
        },
        prefix: prefix,
        iconName: iconName,
        transform: _extends({}, meaninglessTransform, transform),
        title: title,
        extra: {
          attributes: attributes,
          style: style,
          classes: classes
        }
      });
    });
  },

  text: function text(content) {
    var params = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
    var _params$transform2 = params.transform,
        transform = _params$transform2 === undefined ? meaninglessTransform : _params$transform2,
        _params$title2 = params.title,
        title = _params$title2 === undefined ? null : _params$title2,
        _params$classes2 = params.classes,
        classes = _params$classes2 === undefined ? [] : _params$classes2,
        _params$attributes2 = params.attributes,
        attributes = _params$attributes2 === undefined ? {} : _params$attributes2,
        _params$style2 = params.style,
        style = _params$style2 === undefined ? {} : _params$style2;


    return apiObject({ type: 'text', content: content }, function () {
      ensureStyles();

      return makeLayersTextAbstract({
        content: content,
        transform: _extends({}, meaninglessTransform, transform),
        title: title,
        extra: {
          attributes: attributes,
          style: style,
          classes: [config.familyPrefix + '-layers-text'].concat(toConsumableArray(classes))
        }
      });
    });
  },

  layer: function layer(assembler) {
    return apiObject({ type: 'layer' }, function () {
      ensureStyles();

      var children = [];

      assembler(function (args) {
        Array.isArray(args) ? children = args.map(function (a) {
          children = children.concat(a.abstract);
        }) : children = children.concat(args.abstract);
      });

      return [{
        tag: 'span',
        attributes: { class: config.familyPrefix + '-layers' },
        children: children
      }];
    });
  }
};

Object.defineProperty(api$1, 'config', {
  get: function get$$1() {
    var autoReplaceSvg = config.autoReplaceSvg,
        observeMutations = config.observeMutations,
        showMissingIcons = config.showMissingIcons,
        rest = objectWithoutProperties(config, ['autoReplaceSvg', 'observeMutations', 'showMissingIcons']);

    return rest;
  },

  set: function set$$1(newConfig) {
    update(newConfig);
  }
});

bunker(function () {
  var autoReplace = function autoReplace() {
    if (config.autoReplaceSvg) api$1.dom.i2svg({ node: document });
  };

  if (IS_BROWSER) {
    if (!window.FontAwesome) {
      window.FontAwesome = api$1;
    }

    domready(function () {
      if (Object.keys(namespace.packs).length > 0) {
        autoReplace();
      }

      if (config.observeMutations && typeof MutationObserver === 'function') {
        observe({ treeCallback: onTree, nodeCallback: onNode });
      }
    });
  }

  namespace.hooks = index({}, namespace.hooks, {
    addPack: function addPack(prefix, icons) {
      namespace.packs[prefix] = index({}, namespace.packs[prefix] || {}, icons);

      build();
      autoReplace();
    },

    addShims: function addShims(shims) {
      var _namespace$shims;

      (_namespace$shims = namespace.shims).push.apply(_namespace$shims, toConsumableArray(shims));

      build();
      autoReplace();
    }
  });
});

return api$1;

}());
