sir-trevor.js

/*!
 * Sir Trevor JS v0.5.0-beta3
 *
 * Released under the MIT license
 * www.opensource.org/licenses/MIT
 *
 * 2015-03-12
 */


(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.SirTrevor = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
module.exports = require('./src/');

},{"./src/":176}],2:[function(require,module,exports){
// Array.prototype.find - MIT License (c) 2013 Paul Miller <http://paulmillr.com>
// For all details and docs: https://github.com/paulmillr/array.prototype.find
// Fixes and tests supplied by Duncan Hall <http://duncanhall.net> 
(function(globals){
  if (Array.prototype.find) return;

  var find = function(predicate) {
    var list = Object(this);
    var length = list.length < 0 ? 0 : list.length >>> 0; // ES.ToUint32;
    if (length === 0) return undefined;
    if (typeof predicate !== 'function' || Object.prototype.toString.call(predicate) !== '[object Function]') {
      throw new TypeError('Array#find: predicate must be a function');
    }
    var thisArg = arguments[1];
    for (var i = 0, value; i < length; i++) {
      value = list[i];
      if (predicate.call(thisArg, value, i, list)) return value;
    }
    return undefined;
  };

  if (Object.defineProperty) {
    try {
      Object.defineProperty(Array.prototype, 'find', {
        value: find, configurable: true, enumerable: false, writable: true
      });
    } catch(e) {}
  }

  if (!Array.prototype.find) {
    Array.prototype.find = find;
  }
})(this);

},{}],3:[function(require,module,exports){
(function (root, factory) {
  if (typeof define === 'function' && define.amd) {
    // AMD. Register as a module.
    define('eventable', function() {
      return (root.Eventable = factory());
    });
  } else if (typeof exports !== 'undefined') {
    // Node. Does not work with strict CommonJS, but only CommonJS-like
    // enviroments that support module.exports, like Node.
    module.exports = factory();
  } else {
    // Browser globals
    root.Eventable = factory();
  }
}(this, function() {

  // Copy and pasted straight out of Backbone 1.0.0
  // We'll try and keep this updated to the latest

  var array = [];
  var slice = array.slice;

  function once(func) {
    var memo, times = 2;

    return function() {
      if (--times > 0) {
        memo = func.apply(this, arguments);
      } else {
        func = null;
      }
      return memo;
    };
  }

  // Backbone.Events
  // ---------------

  // A module that can be mixed in to *any object* in order to provide it with
  // custom events. You may bind with `on` or remove with `off` callback
  // functions to an event; `trigger`-ing an event fires all callbacks in
  // succession.
  //
  //     var object = {};
  //     extend(object, Backbone.Events);
  //     object.on('expand', function(){ alert('expanded'); });
  //     object.trigger('expand');
  //
  var Eventable = {

    // Bind an event to a `callback` function. Passing `"all"` will bind
    // the callback to all events fired.
    on: function(name, callback, context) {
      if (!eventsApi(this, 'on', name, [callback, context]) || !callback) return this;
      this._events || (this._events = {});
      var events = this._events[name] || (this._events[name] = []);
      events.push({callback: callback, context: context, ctx: context || this});
      return this;
    },

    // Bind an event to only be triggered a single time. After the first time
    // the callback is invoked, it will be removed.
    once: function(name, callback, context) {
      if (!eventsApi(this, 'once', name, [callback, context]) || !callback) return this;
      var self = this;
      var func = once(function() {
        self.off(name, func);
        callback.apply(this, arguments);
      });
      func._callback = callback;
      return this.on(name, func, context);
    },

    // Remove one or many callbacks. If `context` is null, removes all
    // callbacks with that function. If `callback` is null, removes all
    // callbacks for the event. If `name` is null, removes all bound
    // callbacks for all events.
    off: function(name, callback, context) {
      var retain, ev, events, names, i, l, j, k;
      if (!this._events || !eventsApi(this, 'off', name, [callback, context])) return this;
      if (!name && !callback && !context) {
        this._events = {};
        return this;
      }

      names = name ? [name] : Object.keys(this._events);
      for (i = 0, l = names.length; i < l; i++) {
        name = names[i];
        if (events = this._events[name]) {
          this._events[name] = retain = [];
          if (callback || context) {
            for (j = 0, k = events.length; j < k; j++) {
              ev = events[j];
              if ((callback && callback !== ev.callback && callback !== ev.callback._callback) ||
                  (context && context !== ev.context)) {
                retain.push(ev);
              }
            }
          }
          if (!retain.length) delete this._events[name];
        }
      }

      return this;
    },

    // Trigger one or many events, firing all bound callbacks. Callbacks are
    // passed the same arguments as `trigger` is, apart from the event name
    // (unless you're listening on `"all"`, which will cause your callback to
    // receive the true name of the event as the first argument).
    trigger: function(name) {
      if (!this._events) return this;
      var args = slice.call(arguments, 1);
      if (!eventsApi(this, 'trigger', name, args)) return this;
      var events = this._events[name];
      var allEvents = this._events.all;
      if (events) triggerEvents(events, args);
      if (allEvents) triggerEvents(allEvents, arguments);
      return this;
    },

    // Tell this object to stop listening to either specific events ... or
    // to every object it's currently listening to.
    stopListening: function(obj, name, callback) {
      var listeners = this._listeners;
      if (!listeners) return this;
      var deleteListener = !name && !callback;
      if (typeof name === 'object') callback = this;
      if (obj) (listeners = {})[obj._listenerId] = obj;
      for (var id in listeners) {
        listeners[id].off(name, callback, this);
        if (deleteListener) delete this._listeners[id];
      }
      return this;
    }

  };

  // Regular expression used to split event strings.
  var eventSplitter = /\s+/;

  // Implement fancy features of the Events API such as multiple event
  // names `"change blur"` and jQuery-style event maps `{change: action}`
  // in terms of the existing API.
  var eventsApi = function(obj, action, name, rest) {
    if (!name) return true;

    // Handle event maps.
    if (typeof name === 'object') {
      for (var key in name) {
        obj[action].apply(obj, [key, name[key]].concat(rest));
      }
      return false;
    }

    // Handle space separated event names.
    if (eventSplitter.test(name)) {
      var names = name.split(eventSplitter);
      for (var i = 0, l = names.length; i < l; i++) {
        obj[action].apply(obj, [names[i]].concat(rest));
      }
      return false;
    }

    return true;
  };

  // A difficult-to-believe, but optimized internal dispatch function for
  // triggering events. Tries to keep the usual cases speedy (most internal
  // Backbone events have 3 arguments).
  var triggerEvents = function(events, args) {
    var ev, i = -1, l = events.length, a1 = args[0], a2 = args[1], a3 = args[2];
    switch (args.length) {
      case 0: while (++i < l) (ev = events[i]).callback.call(ev.ctx); return;
      case 1: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1); return;
      case 2: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1, a2); return;
      case 3: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1, a2, a3); return;
      default: while (++i < l) (ev = events[i]).callback.apply(ev.ctx, args);
    }
  };

  var listenMethods = {listenTo: 'on', listenToOnce: 'once'};

  // Inversion-of-control versions of `on` and `once`. Tell *this* object to
  // listen to an event in another object ... keeping track of what it's
  // listening to.
  function addListenMethod(method, implementation) {
    Eventable[method] = function(obj, name, callback) {
      var listeners = this._listeners || (this._listeners = {});
      var id = obj._listenerId || (obj._listenerId = (new Date()).getTime());
      listeners[id] = obj;
      if (typeof name === 'object') callback = this;
      obj[implementation](name, callback, this);
      return this;
    };
  }

  addListenMethod('listenTo', 'on');
  addListenMethod('listenToOnce', 'once');

  // Aliases for backwards compatibility.
  Eventable.bind   = Eventable.on;
  Eventable.unbind = Eventable.off;

  return Eventable;

}));

},{}],4:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */
var forOwn = require('lodash.forown'),
    isFunction = require('lodash.isfunction');

/** `Object#toString` result shortcuts */
var argsClass = '[object Arguments]',
    arrayClass = '[object Array]',
    objectClass = '[object Object]',
    stringClass = '[object String]';

/** Used for native method references */
var objectProto = Object.prototype;

/** Used to resolve the internal [[Class]] of values */
var toString = objectProto.toString;

/**
 * Checks if `value` is empty. Arrays, strings, or `arguments` objects with a
 * length of `0` and objects with no own enumerable properties are considered
 * "empty".
 *
 * @static
 * @memberOf _
 * @category Objects
 * @param {Array|Object|string} value The value to inspect.
 * @returns {boolean} Returns `true` if the `value` is empty, else `false`.
 * @example
 *
 * _.isEmpty([1, 2, 3]);
 * // => false
 *
 * _.isEmpty({});
 * // => true
 *
 * _.isEmpty('');
 * // => true
 */
function isEmpty(value) {
  var result = true;
  if (!value) {
    return result;
  }
  var className = toString.call(value),
      length = value.length;

  if ((className == arrayClass || className == stringClass || className == argsClass ) ||
      (className == objectClass && typeof length == 'number' && isFunction(value.splice))) {
    return !length;
  }
  forOwn(value, function() {
    return (result = false);
  });
  return result;
}

module.exports = isEmpty;

},{"lodash.forown":5,"lodash.isfunction":28}],5:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */
var baseCreateCallback = require('lodash._basecreatecallback'),
    keys = require('lodash.keys'),
    objectTypes = require('lodash._objecttypes');

/**
 * Iterates over own enumerable properties of an object, executing the callback
 * for each property. The callback is bound to `thisArg` and invoked with three
 * arguments; (value, key, object). Callbacks may exit iteration early by
 * explicitly returning `false`.
 *
 * @static
 * @memberOf _
 * @type Function
 * @category Objects
 * @param {Object} object The object to iterate over.
 * @param {Function} [callback=identity] The function called per iteration.
 * @param {*} [thisArg] The `this` binding of `callback`.
 * @returns {Object} Returns `object`.
 * @example
 *
 * _.forOwn({ '0': 'zero', '1': 'one', 'length': 2 }, function(num, key) {
 *   console.log(key);
 * });
 * // => logs '0', '1', and 'length' (property order is not guaranteed across environments)
 */
var forOwn = function(collection, callback, thisArg) {
  var index, iterable = collection, result = iterable;
  if (!iterable) return result;
  if (!objectTypes[typeof iterable]) return result;
  callback = callback && typeof thisArg == 'undefined' ? callback : baseCreateCallback(callback, thisArg, 3);
    var ownIndex = -1,
        ownProps = objectTypes[typeof iterable] && keys(iterable),
        length = ownProps ? ownProps.length : 0;

    while (++ownIndex < length) {
      index = ownProps[ownIndex];
      if (callback(iterable[index], index, collection) === false) return result;
    }
  return result
};

module.exports = forOwn;

},{"lodash._basecreatecallback":6,"lodash._objecttypes":24,"lodash.keys":25}],6:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */
var bind = require('lodash.bind'),
    identity = require('lodash.identity'),
    setBindData = require('lodash._setbinddata'),
    support = require('lodash.support');

/** Used to detected named functions */
var reFuncName = /^\s*function[ \n\r\t]+\w/;

/** Used to detect functions containing a `this` reference */
var reThis = /\bthis\b/;

/** Native method shortcuts */
var fnToString = Function.prototype.toString;

/**
 * The base implementation of `_.createCallback` without support for creating
 * "_.pluck" or "_.where" style callbacks.
 *
 * @private
 * @param {*} [func=identity] The value to convert to a callback.
 * @param {*} [thisArg] The `this` binding of the created callback.
 * @param {number} [argCount] The number of arguments the callback accepts.
 * @returns {Function} Returns a callback function.
 */
function baseCreateCallback(func, thisArg, argCount) {
  if (typeof func != 'function') {
    return identity;
  }
  // exit early for no `thisArg` or already bound by `Function#bind`
  if (typeof thisArg == 'undefined' || !('prototype' in func)) {
    return func;
  }
  var bindData = func.__bindData__;
  if (typeof bindData == 'undefined') {
    if (support.funcNames) {
      bindData = !func.name;
    }
    bindData = bindData || !support.funcDecomp;
    if (!bindData) {
      var source = fnToString.call(func);
      if (!support.funcNames) {
        bindData = !reFuncName.test(source);
      }
      if (!bindData) {
        // checks if `func` references the `this` keyword and stores the result
        bindData = reThis.test(source);
        setBindData(func, bindData);
      }
    }
  }
  // exit early if there are no `this` references or `func` is bound
  if (bindData === false || (bindData !== true && bindData[1] & 1)) {
    return func;
  }
  switch (argCount) {
    case 1: return function(value) {
      return func.call(thisArg, value);
    };
    case 2: return function(a, b) {
      return func.call(thisArg, a, b);
    };
    case 3: return function(value, index, collection) {
      return func.call(thisArg, value, index, collection);
    };
    case 4: return function(accumulator, value, index, collection) {
      return func.call(thisArg, accumulator, value, index, collection);
    };
  }
  return bind(func, thisArg);
}

module.exports = baseCreateCallback;

},{"lodash._setbinddata":7,"lodash.bind":10,"lodash.identity":21,"lodash.support":22}],7:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */
var isNative = require('lodash._isnative'),
    noop = require('lodash.noop');

/** Used as the property descriptor for `__bindData__` */
var descriptor = {
  'configurable': false,
  'enumerable': false,
  'value': null,
  'writable': false
};

/** Used to set meta data on functions */
var defineProperty = (function() {
  // IE 8 only accepts DOM elements
  try {
    var o = {},
        func = isNative(func = Object.defineProperty) && func,
        result = func(o, o, o) && func;
  } catch(e) { }
  return result;
}());

/**
 * Sets `this` binding data on a given function.
 *
 * @private
 * @param {Function} func The function to set data on.
 * @param {Array} value The data array to set.
 */
var setBindData = !defineProperty ? noop : function(func, value) {
  descriptor.value = value;
  defineProperty(func, '__bindData__', descriptor);
};

module.exports = setBindData;

},{"lodash._isnative":8,"lodash.noop":9}],8:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */

/** Used for native method references */
var objectProto = Object.prototype;

/** Used to resolve the internal [[Class]] of values */
var toString = objectProto.toString;

/** Used to detect if a method is native */
var reNative = RegExp('^' +
  String(toString)
    .replace(/[.*+?^${}()|[\]\\]/g, '\\$&')
    .replace(/toString| for [^\]]+/g, '.*?') + '$'
);

/**
 * Checks if `value` is a native function.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if the `value` is a native function, else `false`.
 */
function isNative(value) {
  return typeof value == 'function' && reNative.test(value);
}

module.exports = isNative;

},{}],9:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */

/**
 * A no-operation function.
 *
 * @static
 * @memberOf _
 * @category Utilities
 * @example
 *
 * var object = { 'name': 'fred' };
 * _.noop(object) === undefined;
 * // => true
 */
function noop() {
  // no operation performed
}

module.exports = noop;

},{}],10:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */
var createWrapper = require('lodash._createwrapper'),
    slice = require('lodash._slice');

/**
 * Creates a function that, when called, invokes `func` with the `this`
 * binding of `thisArg` and prepends any additional `bind` arguments to those
 * provided to the bound function.
 *
 * @static
 * @memberOf _
 * @category Functions
 * @param {Function} func The function to bind.
 * @param {*} [thisArg] The `this` binding of `func`.
 * @param {...*} [arg] Arguments to be partially applied.
 * @returns {Function} Returns the new bound function.
 * @example
 *
 * var func = function(greeting) {
 *   return greeting + ' ' + this.name;
 * };
 *
 * func = _.bind(func, { 'name': 'fred' }, 'hi');
 * func();
 * // => 'hi fred'
 */
function bind(func, thisArg) {
  return arguments.length > 2
    ? createWrapper(func, 17, slice(arguments, 2), null, thisArg)
    : createWrapper(func, 1, null, null, thisArg);
}

module.exports = bind;

},{"lodash._createwrapper":11,"lodash._slice":20}],11:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */
var baseBind = require('lodash._basebind'),
    baseCreateWrapper = require('lodash._basecreatewrapper'),
    isFunction = require('lodash.isfunction'),
    slice = require('lodash._slice');

/**
 * Used for `Array` method references.
 *
 * Normally `Array.prototype` would suffice, however, using an array literal
 * avoids issues in Narwhal.
 */
var arrayRef = [];

/** Native method shortcuts */
var push = arrayRef.push,
    unshift = arrayRef.unshift;

/**
 * Creates a function that, when called, either curries or invokes `func`
 * with an optional `this` binding and partially applied arguments.
 *
 * @private
 * @param {Function|string} func The function or method name to reference.
 * @param {number} bitmask The bitmask of method flags to compose.
 *  The bitmask may be composed of the following flags:
 *  1 - `_.bind`
 *  2 - `_.bindKey`
 *  4 - `_.curry`
 *  8 - `_.curry` (bound)
 *  16 - `_.partial`
 *  32 - `_.partialRight`
 * @param {Array} [partialArgs] An array of arguments to prepend to those
 *  provided to the new function.
 * @param {Array} [partialRightArgs] An array of arguments to append to those
 *  provided to the new function.
 * @param {*} [thisArg] The `this` binding of `func`.
 * @param {number} [arity] The arity of `func`.
 * @returns {Function} Returns the new function.
 */
function createWrapper(func, bitmask, partialArgs, partialRightArgs, thisArg, arity) {
  var isBind = bitmask & 1,
      isBindKey = bitmask & 2,
      isCurry = bitmask & 4,
      isCurryBound = bitmask & 8,
      isPartial = bitmask & 16,
      isPartialRight = bitmask & 32;

  if (!isBindKey && !isFunction(func)) {
    throw new TypeError;
  }
  if (isPartial && !partialArgs.length) {
    bitmask &= ~16;
    isPartial = partialArgs = false;
  }
  if (isPartialRight && !partialRightArgs.length) {
    bitmask &= ~32;
    isPartialRight = partialRightArgs = false;
  }
  var bindData = func && func.__bindData__;
  if (bindData && bindData !== true) {
    // clone `bindData`
    bindData = slice(bindData);
    if (bindData[2]) {
      bindData[2] = slice(bindData[2]);
    }
    if (bindData[3]) {
      bindData[3] = slice(bindData[3]);
    }
    // set `thisBinding` is not previously bound
    if (isBind && !(bindData[1] & 1)) {
      bindData[4] = thisArg;
    }
    // set if previously bound but not currently (subsequent curried functions)
    if (!isBind && bindData[1] & 1) {
      bitmask |= 8;
    }
    // set curried arity if not yet set
    if (isCurry && !(bindData[1] & 4)) {
      bindData[5] = arity;
    }
    // append partial left arguments
    if (isPartial) {
      push.apply(bindData[2] || (bindData[2] = []), partialArgs);
    }
    // append partial right arguments
    if (isPartialRight) {
      unshift.apply(bindData[3] || (bindData[3] = []), partialRightArgs);
    }
    // merge flags
    bindData[1] |= bitmask;
    return createWrapper.apply(null, bindData);
  }
  // fast path for `_.bind`
  var creater = (bitmask == 1 || bitmask === 17) ? baseBind : baseCreateWrapper;
  return creater([func, bitmask, partialArgs, partialRightArgs, thisArg, arity]);
}

module.exports = createWrapper;

},{"lodash._basebind":12,"lodash._basecreatewrapper":16,"lodash._slice":20,"lodash.isfunction":28}],12:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */
var baseCreate = require('lodash._basecreate'),
    isObject = require('lodash.isobject'),
    setBindData = require('lodash._setbinddata'),
    slice = require('lodash._slice');

/**
 * Used for `Array` method references.
 *
 * Normally `Array.prototype` would suffice, however, using an array literal
 * avoids issues in Narwhal.
 */
var arrayRef = [];

/** Native method shortcuts */
var push = arrayRef.push;

/**
 * The base implementation of `_.bind` that creates the bound function and
 * sets its meta data.
 *
 * @private
 * @param {Array} bindData The bind data array.
 * @returns {Function} Returns the new bound function.
 */
function baseBind(bindData) {
  var func = bindData[0],
      partialArgs = bindData[2],
      thisArg = bindData[4];

  function bound() {
    // `Function#bind` spec
    // http://es5.github.io/#x15.3.4.5
    if (partialArgs) {
      // avoid `arguments` object deoptimizations by using `slice` instead
      // of `Array.prototype.slice.call` and not assigning `arguments` to a
      // variable as a ternary expression
      var args = slice(partialArgs);
      push.apply(args, arguments);
    }
    // mimic the constructor's `return` behavior
    // http://es5.github.io/#x13.2.2
    if (this instanceof bound) {
      // ensure `new bound` is an instance of `func`
      var thisBinding = baseCreate(func.prototype),
          result = func.apply(thisBinding, args || arguments);
      return isObject(result) ? result : thisBinding;
    }
    return func.apply(thisArg, args || arguments);
  }
  setBindData(bound, bindData);
  return bound;
}

module.exports = baseBind;

},{"lodash._basecreate":13,"lodash._setbinddata":7,"lodash._slice":20,"lodash.isobject":29}],13:[function(require,module,exports){
(function (global){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */
var isNative = require('lodash._isnative'),
    isObject = require('lodash.isobject'),
    noop = require('lodash.noop');

/* Native method shortcuts for methods with the same name as other `lodash` methods */
var nativeCreate = isNative(nativeCreate = Object.create) && nativeCreate;

/**
 * The base implementation of `_.create` without support for assigning
 * properties to the created object.
 *
 * @private
 * @param {Object} prototype The object to inherit from.
 * @returns {Object} Returns the new object.
 */
function baseCreate(prototype, properties) {
  return isObject(prototype) ? nativeCreate(prototype) : {};
}
// fallback for browsers without `Object.create`
if (!nativeCreate) {
  baseCreate = (function() {
    function Object() {}
    return function(prototype) {
      if (isObject(prototype)) {
        Object.prototype = prototype;
        var result = new Object;
        Object.prototype = null;
      }
      return result || global.Object();
    };
  }());
}

module.exports = baseCreate;

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"lodash._isnative":14,"lodash.isobject":29,"lodash.noop":15}],14:[function(require,module,exports){
arguments[4][8][0].apply(exports,arguments)
},{"dup":8}],15:[function(require,module,exports){
arguments[4][9][0].apply(exports,arguments)
},{"dup":9}],16:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */
var baseCreate = require('lodash._basecreate'),
    isObject = require('lodash.isobject'),
    setBindData = require('lodash._setbinddata'),
    slice = require('lodash._slice');

/**
 * Used for `Array` method references.
 *
 * Normally `Array.prototype` would suffice, however, using an array literal
 * avoids issues in Narwhal.
 */
var arrayRef = [];

/** Native method shortcuts */
var push = arrayRef.push;

/**
 * The base implementation of `createWrapper` that creates the wrapper and
 * sets its meta data.
 *
 * @private
 * @param {Array} bindData The bind data array.
 * @returns {Function} Returns the new function.
 */
function baseCreateWrapper(bindData) {
  var func = bindData[0],
      bitmask = bindData[1],
      partialArgs = bindData[2],
      partialRightArgs = bindData[3],
      thisArg = bindData[4],
      arity = bindData[5];

  var isBind = bitmask & 1,
      isBindKey = bitmask & 2,
      isCurry = bitmask & 4,
      isCurryBound = bitmask & 8,
      key = func;

  function bound() {
    var thisBinding = isBind ? thisArg : this;
    if (partialArgs) {
      var args = slice(partialArgs);
      push.apply(args, arguments);
    }
    if (partialRightArgs || isCurry) {
      args || (args = slice(arguments));
      if (partialRightArgs) {
        push.apply(args, partialRightArgs);
      }
      if (isCurry && args.length < arity) {
        bitmask |= 16 & ~32;
        return baseCreateWrapper([func, (isCurryBound ? bitmask : bitmask & ~3), args, null, thisArg, arity]);
      }
    }
    args || (args = arguments);
    if (isBindKey) {
      func = thisBinding[key];
    }
    if (this instanceof bound) {
      thisBinding = baseCreate(func.prototype);
      var result = func.apply(thisBinding, args);
      return isObject(result) ? result : thisBinding;
    }
    return func.apply(thisBinding, args);
  }
  setBindData(bound, bindData);
  return bound;
}

module.exports = baseCreateWrapper;

},{"lodash._basecreate":17,"lodash._setbinddata":7,"lodash._slice":20,"lodash.isobject":29}],17:[function(require,module,exports){
arguments[4][13][0].apply(exports,arguments)
},{"dup":13,"lodash._isnative":18,"lodash.isobject":29,"lodash.noop":19}],18:[function(require,module,exports){
arguments[4][8][0].apply(exports,arguments)
},{"dup":8}],19:[function(require,module,exports){
arguments[4][9][0].apply(exports,arguments)
},{"dup":9}],20:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */

/**
 * Slices the `collection` from the `start` index up to, but not including,
 * the `end` index.
 *
 * Note: This function is used instead of `Array#slice` to support node lists
 * in IE < 9 and to ensure dense arrays are returned.
 *
 * @private
 * @param {Array|Object|string} collection The collection to slice.
 * @param {number} start The start index.
 * @param {number} end The end index.
 * @returns {Array} Returns the new array.
 */
function slice(array, start, end) {
  start || (start = 0);
  if (typeof end == 'undefined') {
    end = array ? array.length : 0;
  }
  var index = -1,
      length = end - start || 0,
      result = Array(length < 0 ? 0 : length);

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

module.exports = slice;

},{}],21:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */

/**
 * This method returns the first argument provided to it.
 *
 * @static
 * @memberOf _
 * @category Utilities
 * @param {*} value Any value.
 * @returns {*} Returns `value`.
 * @example
 *
 * var object = { 'name': 'fred' };
 * _.identity(object) === object;
 * // => true
 */
function identity(value) {
  return value;
}

module.exports = identity;

},{}],22:[function(require,module,exports){
(function (global){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */
var isNative = require('lodash._isnative');

/** Used to detect functions containing a `this` reference */
var reThis = /\bthis\b/;

/**
 * An object used to flag environments features.
 *
 * @static
 * @memberOf _
 * @type Object
 */
var support = {};

/**
 * Detect if functions can be decompiled by `Function#toString`
 * (all but PS3 and older Opera mobile browsers & avoided in Windows 8 apps).
 *
 * @memberOf _.support
 * @type boolean
 */
support.funcDecomp = !isNative(global.WinRTError) && reThis.test(function() { return this; });

/**
 * Detect if `Function#name` is supported (all but IE).
 *
 * @memberOf _.support
 * @type boolean
 */
support.funcNames = typeof Function.name == 'string';

module.exports = support;

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"lodash._isnative":23}],23:[function(require,module,exports){
arguments[4][8][0].apply(exports,arguments)
},{"dup":8}],24:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */

/** Used to determine if values are of the language type Object */
var objectTypes = {
  'boolean': false,
  'function': true,
  'object': true,
  'number': false,
  'string': false,
  'undefined': false
};

module.exports = objectTypes;

},{}],25:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */
var isNative = require('lodash._isnative'),
    isObject = require('lodash.isobject'),
    shimKeys = require('lodash._shimkeys');

/* Native method shortcuts for methods with the same name as other `lodash` methods */
var nativeKeys = isNative(nativeKeys = Object.keys) && nativeKeys;

/**
 * Creates an array composed of the own enumerable property names of an object.
 *
 * @static
 * @memberOf _
 * @category Objects
 * @param {Object} object The object to inspect.
 * @returns {Array} Returns an array of property names.
 * @example
 *
 * _.keys({ 'one': 1, 'two': 2, 'three': 3 });
 * // => ['one', 'two', 'three'] (property order is not guaranteed across environments)
 */
var keys = !nativeKeys ? shimKeys : function(object) {
  if (!isObject(object)) {
    return [];
  }
  return nativeKeys(object);
};

module.exports = keys;

},{"lodash._isnative":26,"lodash._shimkeys":27,"lodash.isobject":29}],26:[function(require,module,exports){
arguments[4][8][0].apply(exports,arguments)
},{"dup":8}],27:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */
var objectTypes = require('lodash._objecttypes');

/** Used for native method references */
var objectProto = Object.prototype;

/** Native method shortcuts */
var hasOwnProperty = objectProto.hasOwnProperty;

/**
 * A fallback implementation of `Object.keys` which produces an array of the
 * given object's own enumerable property names.
 *
 * @private
 * @type Function
 * @param {Object} object The object to inspect.
 * @returns {Array} Returns an array of property names.
 */
var shimKeys = function(object) {
  var index, iterable = object, result = [];
  if (!iterable) return result;
  if (!(objectTypes[typeof object])) return result;
    for (index in iterable) {
      if (hasOwnProperty.call(iterable, index)) {
        result.push(index);
      }
    }
  return result
};

module.exports = shimKeys;

},{"lodash._objecttypes":24}],28:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */

/**
 * Checks if `value` is a function.
 *
 * @static
 * @memberOf _
 * @category Objects
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if the `value` is a function, else `false`.
 * @example
 *
 * _.isFunction(_);
 * // => true
 */
function isFunction(value) {
  return typeof value == 'function';
}

module.exports = isFunction;

},{}],29:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */
var objectTypes = require('lodash._objecttypes');

/**
 * Checks if `value` is the language type of Object.
 * (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
 *
 * @static
 * @memberOf _
 * @category Objects
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if the `value` is an object, else `false`.
 * @example
 *
 * _.isObject({});
 * // => true
 *
 * _.isObject([1, 2, 3]);
 * // => true
 *
 * _.isObject(1);
 * // => false
 */
function isObject(value) {
  // check if the value is the ECMAScript language type of Object
  // http://es5.github.io/#x8
  // and avoid a V8 bug
  // http://code.google.com/p/v8/issues/detail?id=2291
  return !!(value && objectTypes[typeof value]);
}

module.exports = isObject;

},{"lodash._objecttypes":30}],30:[function(require,module,exports){
arguments[4][24][0].apply(exports,arguments)
},{"dup":24}],31:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */

/** `Object#toString` result shortcuts */
var stringClass = '[object String]';

/** Used for native method references */
var objectProto = Object.prototype;

/** Used to resolve the internal [[Class]] of values */
var toString = objectProto.toString;

/**
 * Checks if `value` is a string.
 *
 * @static
 * @memberOf _
 * @category Objects
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if the `value` is a string, else `false`.
 * @example
 *
 * _.isString('fred');
 * // => true
 */
function isString(value) {
  return typeof value == 'string' ||
    value && typeof value == 'object' && toString.call(value) == stringClass || false;
}

module.exports = isString;

},{}],32:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */

/**
 * Checks if `value` is `undefined`.
 *
 * @static
 * @memberOf _
 * @category Objects
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if the `value` is `undefined`, else `false`.
 * @example
 *
 * _.isUndefined(void 0);
 * // => true
 */
function isUndefined(value) {
  return typeof value == 'undefined';
}

module.exports = isUndefined;

},{}],33:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */
var isFunction = require('lodash.isfunction');

/**
 * Resolves the value of property `key` on `object`. If `key` is a function
 * it will be invoked with the `this` binding of `object` and its result returned,
 * else the property value is returned. If `object` is falsey then `undefined`
 * is returned.
 *
 * @static
 * @memberOf _
 * @category Utilities
 * @param {Object} object The object to inspect.
 * @param {string} key The name of the property to resolve.
 * @returns {*} Returns the resolved value.
 * @example
 *
 * var object = {
 *   'cheese': 'crumpets',
 *   'stuff': function() {
 *     return 'nonsense';
 *   }
 * };
 *
 * _.result(object, 'cheese');
 * // => 'crumpets'
 *
 * _.result(object, 'stuff');
 * // => 'nonsense'
 */
function result(object, key) {
  if (object) {
    var value = object[key];
    return isFunction(value) ? object[key]() : value;
  }
}

module.exports = result;

},{"lodash.isfunction":28}],34:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */
var defaults = require('lodash.defaults'),
    escape = require('lodash.escape'),
    escapeStringChar = require('lodash._escapestringchar'),
    keys = require('lodash.keys'),
    reInterpolate = require('lodash._reinterpolate'),
    templateSettings = require('lodash.templatesettings'),
    values = require('lodash.values');

/** Used to match empty string literals in compiled template source */
var reEmptyStringLeading = /\b__p \+= '';/g,
    reEmptyStringMiddle = /\b(__p \+=) '' \+/g,
    reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g;

/**
 * Used to match ES6 template delimiters
 * http://people.mozilla.org/~jorendorff/es6-draft.html#sec-literals-string-literals
 */
var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g;

/** Used to ensure capturing order of template delimiters */
var reNoMatch = /($^)/;

/** Used to match unescaped characters in compiled string literals */
var reUnescapedString = /['\n\r\t\u2028\u2029\\]/g;

/**
 * A micro-templating method that handles arbitrary delimiters, preserves
 * whitespace, and correctly escapes quotes within interpolated code.
 *
 * Note: In the development build, `_.template` utilizes sourceURLs for easier
 * debugging. See http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl
 *
 * For more information on precompiling templates see:
 * http://lodash.com/custom-builds
 *
 * For more information on Chrome extension sandboxes see:
 * http://developer.chrome.com/stable/extensions/sandboxingEval.html
 *
 * @static
 * @memberOf _
 * @category Utilities
 * @param {string} text The template text.
 * @param {Object} data The data object used to populate the text.
 * @param {Object} [options] The options object.
 * @param {RegExp} [options.escape] The "escape" delimiter.
 * @param {RegExp} [options.evaluate] The "evaluate" delimiter.
 * @param {Object} [options.imports] An object to import into the template as local variables.
 * @param {RegExp} [options.interpolate] The "interpolate" delimiter.
 * @param {string} [sourceURL] The sourceURL of the template's compiled source.
 * @param {string} [variable] The data object variable name.
 * @returns {Function|string} Returns a compiled function when no `data` object
 *  is given, else it returns the interpolated text.
 * @example
 *
 * // using the "interpolate" delimiter to create a compiled template
 * var compiled = _.template('hello <%= name %>');
 * compiled({ 'name': 'fred' });
 * // => 'hello fred'
 *
 * // using the "escape" delimiter to escape HTML in data property values
 * _.template('<b><%- value %></b>', { 'value': '<script>' });
 * // => '<b>&lt;script&gt;</b>'
 *
 * // using the "evaluate" delimiter to generate HTML
 * var list = '<% _.forEach(people, function(name) { %><li><%- name %></li><% }); %>';
 * _.template(list, { 'people': ['fred', 'barney'] });
 * // => '<li>fred</li><li>barney</li>'
 *
 * // using the ES6 delimiter as an alternative to the default "interpolate" delimiter
 * _.template('hello ${ name }', { 'name': 'pebbles' });
 * // => 'hello pebbles'
 *
 * // using the internal `print` function in "evaluate" delimiters
 * _.template('<% print("hello " + name); %>!', { 'name': 'barney' });
 * // => 'hello barney!'
 *
 * // using a custom template delimiters
 * _.templateSettings = {
 *   'interpolate': /{{([\s\S]+?)}}/g
 * };
 *
 * _.template('hello {{ name }}!', { 'name': 'mustache' });
 * // => 'hello mustache!'
 *
 * // using the `imports` option to import jQuery
 * var list = '<% jq.each(people, function(name) { %><li><%- name %></li><% }); %>';
 * _.template(list, { 'people': ['fred', 'barney'] }, { 'imports': { 'jq': jQuery } });
 * // => '<li>fred</li><li>barney</li>'
 *
 * // using the `sourceURL` option to specify a custom sourceURL for the template
 * var compiled = _.template('hello <%= name %>', null, { 'sourceURL': '/basic/greeting.jst' });
 * compiled(data);
 * // => find the source of "greeting.jst" under the Sources tab or Resources panel of the web inspector
 *
 * // using the `variable` option to ensure a with-statement isn't used in the compiled template
 * var compiled = _.template('hi <%= data.name %>!', null, { 'variable': 'data' });
 * compiled.source;
 * // => function(data) {
 *   var __t, __p = '', __e = _.escape;
 *   __p += 'hi ' + ((__t = ( data.name )) == null ? '' : __t) + '!';
 *   return __p;
 * }
 *
 * // using the `source` property to inline compiled templates for meaningful
 * // line numbers in error messages and a stack trace
 * fs.writeFileSync(path.join(cwd, 'jst.js'), '\
 *   var JST = {\
 *     "main": ' + _.template(mainText).source + '\
 *   };\
 * ');
 */
function template(text, data, options) {
  // based on John Resig's `tmpl` implementation
  // http://ejohn.org/blog/javascript-micro-templating/
  // and Laura Doktorova's doT.js
  // https://github.com/olado/doT
  var settings = templateSettings.imports._.templateSettings || templateSettings;
  text = String(text || '');

  // avoid missing dependencies when `iteratorTemplate` is not defined
  options = defaults({}, options, settings);

  var imports = defaults({}, options.imports, settings.imports),
      importsKeys = keys(imports),
      importsValues = values(imports);

  var isEvaluating,
      index = 0,
      interpolate = options.interpolate || reNoMatch,
      source = "__p += '";

  // compile the regexp to match each delimiter
  var reDelimiters = RegExp(
    (options.escape || reNoMatch).source + '|' +
    interpolate.source + '|' +
    (interpolate === reInterpolate ? reEsTemplate : reNoMatch).source + '|' +
    (options.evaluate || reNoMatch).source + '|$'
  , 'g');

  text.replace(reDelimiters, function(match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) {
    interpolateValue || (interpolateValue = esTemplateValue);

    // escape characters that cannot be included in string literals
    source += text.slice(index, offset).replace(reUnescapedString, escapeStringChar);

    // replace delimiters with snippets
    if (escapeValue) {
      source += "' +\n__e(" + escapeValue + ") +\n'";
    }
    if (evaluateValue) {
      isEvaluating = true;
      source += "';\n" + evaluateValue + ";\n__p += '";
    }
    if (interpolateValue) {
      source += "' +\n((__t = (" + interpolateValue + ")) == null ? '' : __t) +\n'";
    }
    index = offset + match.length;

    // the JS engine embedded in Adobe products requires returning the `match`
    // string in order to produce the correct `offset` value
    return match;
  });

  source += "';\n";

  // if `variable` is not specified, wrap a with-statement around the generated
  // code to add the data object to the top of the scope chain
  var variable = options.variable,
      hasVariable = variable;

  if (!hasVariable) {
    variable = 'obj';
    source = 'with (' + variable + ') {\n' + source + '\n}\n';
  }
  // cleanup code by stripping empty strings
  source = (isEvaluating ? source.replace(reEmptyStringLeading, '') : source)
    .replace(reEmptyStringMiddle, '$1')
    .replace(reEmptyStringTrailing, '$1;');

  // frame code as the function body
  source = 'function(' + variable + ') {\n' +
    (hasVariable ? '' : variable + ' || (' + variable + ' = {});\n') +
    "var __t, __p = '', __e = _.escape" +
    (isEvaluating
      ? ', __j = Array.prototype.join;\n' +
        "function print() { __p += __j.call(arguments, '') }\n"
      : ';\n'
    ) +
    source +
    'return __p\n}';

  try {
    var result = Function(importsKeys, 'return ' + source ).apply(undefined, importsValues);
  } catch(e) {
    e.source = source;
    throw e;
  }
  if (data) {
    return result(data);
  }
  // provide the compiled function's source by its `toString` method, in
  // supported environments, or the `source` property as a convenience for
  // inlining compiled templates during the build process
  result.source = source;
  return result;
}

module.exports = template;

},{"lodash._escapestringchar":35,"lodash._reinterpolate":36,"lodash.defaults":37,"lodash.escape":39,"lodash.keys":44,"lodash.templatesettings":48,"lodash.values":49}],35:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */

/** Used to escape characters for inclusion in compiled string literals */
var stringEscapes = {
  '\\': '\\',
  "'": "'",
  '\n': 'n',
  '\r': 'r',
  '\t': 't',
  '\u2028': 'u2028',
  '\u2029': 'u2029'
};

/**
 * Used by `template` to escape characters for inclusion in compiled
 * string literals.
 *
 * @private
 * @param {string} match The matched character to escape.
 * @returns {string} Returns the escaped character.
 */
function escapeStringChar(match) {
  return '\\' + stringEscapes[match];
}

module.exports = escapeStringChar;

},{}],36:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */

/** Used to match "interpolate" template delimiters */
var reInterpolate = /<%=([\s\S]+?)%>/g;

module.exports = reInterpolate;

},{}],37:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */
var keys = require('lodash.keys'),
    objectTypes = require('lodash._objecttypes');

/**
 * Assigns own enumerable properties of source object(s) to the destination
 * object for all destination properties that resolve to `undefined`. Once a
 * property is set, additional defaults of the same property will be ignored.
 *
 * @static
 * @memberOf _
 * @type Function
 * @category Objects
 * @param {Object} object The destination object.
 * @param {...Object} [source] The source objects.
 * @param- {Object} [guard] Allows working with `_.reduce` without using its
 *  `key` and `object` arguments as sources.
 * @returns {Object} Returns the destination object.
 * @example
 *
 * var object = { 'name': 'barney' };
 * _.defaults(object, { 'name': 'fred', 'employer': 'slate' });
 * // => { 'name': 'barney', 'employer': 'slate' }
 */
var defaults = function(object, source, guard) {
  var index, iterable = object, result = iterable;
  if (!iterable) return result;
  var args = arguments,
      argsIndex = 0,
      argsLength = typeof guard == 'number' ? 2 : args.length;
  while (++argsIndex < argsLength) {
    iterable = args[argsIndex];
    if (iterable && objectTypes[typeof iterable]) {
    var ownIndex = -1,
        ownProps = objectTypes[typeof iterable] && keys(iterable),
        length = ownProps ? ownProps.length : 0;

    while (++ownIndex < length) {
      index = ownProps[ownIndex];
      if (typeof result[index] == 'undefined') result[index] = iterable[index];
    }
    }
  }
  return result
};

module.exports = defaults;

},{"lodash._objecttypes":38,"lodash.keys":44}],38:[function(require,module,exports){
arguments[4][24][0].apply(exports,arguments)
},{"dup":24}],39:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */
var escapeHtmlChar = require('lodash._escapehtmlchar'),
    keys = require('lodash.keys'),
    reUnescapedHtml = require('lodash._reunescapedhtml');

/**
 * Converts the characters `&`, `<`, `>`, `"`, and `'` in `string` to their
 * corresponding HTML entities.
 *
 * @static
 * @memberOf _
 * @category Utilities
 * @param {string} string The string to escape.
 * @returns {string} Returns the escaped string.
 * @example
 *
 * _.escape('Fred, Wilma, & Pebbles');
 * // => 'Fred, Wilma, &amp; Pebbles'
 */
function escape(string) {
  return string == null ? '' : String(string).replace(reUnescapedHtml, escapeHtmlChar);
}

module.exports = escape;

},{"lodash._escapehtmlchar":40,"lodash._reunescapedhtml":42,"lodash.keys":44}],40:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */
var htmlEscapes = require('lodash._htmlescapes');

/**
 * Used by `escape` to convert characters to HTML entities.
 *
 * @private
 * @param {string} match The matched character to escape.
 * @returns {string} Returns the escaped character.
 */
function escapeHtmlChar(match) {
  return htmlEscapes[match];
}

module.exports = escapeHtmlChar;

},{"lodash._htmlescapes":41}],41:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */

/**
 * Used to convert characters to HTML entities:
 *
 * Though the `>` character is escaped for symmetry, characters like `>` and `/`
 * don't require escaping in HTML and have no special meaning unless they're part
 * of a tag or an unquoted attribute value.
 * http://mathiasbynens.be/notes/ambiguous-ampersands (under "semi-related fun fact")
 */
var htmlEscapes = {
  '&': '&amp;',
  '<': '&lt;',
  '>': '&gt;',
  '"': '&quot;',
  "'": '&#39;'
};

module.exports = htmlEscapes;

},{}],42:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */
var htmlEscapes = require('lodash._htmlescapes'),
    keys = require('lodash.keys');

/** Used to match HTML entities and HTML characters */
var reUnescapedHtml = RegExp('[' + keys(htmlEscapes).join('') + ']', 'g');

module.exports = reUnescapedHtml;

},{"lodash._htmlescapes":43,"lodash.keys":44}],43:[function(require,module,exports){
arguments[4][41][0].apply(exports,arguments)
},{"dup":41}],44:[function(require,module,exports){
arguments[4][25][0].apply(exports,arguments)
},{"dup":25,"lodash._isnative":45,"lodash._shimkeys":46,"lodash.isobject":29}],45:[function(require,module,exports){
arguments[4][8][0].apply(exports,arguments)
},{"dup":8}],46:[function(require,module,exports){
arguments[4][27][0].apply(exports,arguments)
},{"dup":27,"lodash._objecttypes":47}],47:[function(require,module,exports){
arguments[4][24][0].apply(exports,arguments)
},{"dup":24}],48:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */
var escape = require('lodash.escape'),
    reInterpolate = require('lodash._reinterpolate');

/**
 * By default, the template delimiters used by Lo-Dash are similar to those in
 * embedded Ruby (ERB). Change the following template settings to use alternative
 * delimiters.
 *
 * @static
 * @memberOf _
 * @type Object
 */
var templateSettings = {

  /**
   * Used to detect `data` property values to be HTML-escaped.
   *
   * @memberOf _.templateSettings
   * @type RegExp
   */
  'escape': /<%-([\s\S]+?)%>/g,

  /**
   * Used to detect code to be evaluated.
   *
   * @memberOf _.templateSettings
   * @type RegExp
   */
  'evaluate': /<%([\s\S]+?)%>/g,

  /**
   * Used to detect `data` property values to inject.
   *
   * @memberOf _.templateSettings
   * @type RegExp
   */
  'interpolate': reInterpolate,

  /**
   * Used to reference the data object in the template text.
   *
   * @memberOf _.templateSettings
   * @type string
   */
  'variable': '',

  /**
   * Used to import variables into the compiled template.
   *
   * @memberOf _.templateSettings
   * @type Object
   */
  'imports': {

    /**
     * A reference to the `lodash` function.
     *
     * @memberOf _.templateSettings.imports
     * @type Function
     */
    '_': { 'escape': escape }
  }
};

module.exports = templateSettings;

},{"lodash._reinterpolate":36,"lodash.escape":39}],49:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */
var keys = require('lodash.keys');

/**
 * Creates an array composed of the own enumerable property values of `object`.
 *
 * @static
 * @memberOf _
 * @category Objects
 * @param {Object} object The object to inspect.
 * @returns {Array} Returns an array of property values.
 * @example
 *
 * _.values({ 'one': 1, 'two': 2, 'three': 3 });
 * // => [1, 2, 3] (property order is not guaranteed across environments)
 */
function values(object) {
  var index = -1,
      props = keys(object),
      length = props.length,
      result = Array(length);

  while (++index < length) {
    result[index] = object[props[index]];
  }
  return result;
}

module.exports = values;

},{"lodash.keys":44}],50:[function(require,module,exports){
/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize modern exports="npm" -o ./npm/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */

/** Used to generate unique IDs */
var idCounter = 0;

/**
 * Generates a unique ID. If `prefix` is provided the ID will be appended to it.
 *
 * @static
 * @memberOf _
 * @category Utilities
 * @param {string} [prefix] The value to prefix the ID with.
 * @returns {string} Returns the unique ID.
 * @example
 *
 * _.uniqueId('contact_');
 * // => 'contact_104'
 *
 * _.uniqueId();
 * // => '105'
 */
function uniqueId(prefix) {
  var id = ++idCounter;
  return String(prefix == null ? '' : prefix) + id;
}

module.exports = uniqueId;

},{}],51:[function(require,module,exports){
'use strict';

// modified from https://github.com/es-shims/es6-shim
var keys = require('object-keys');
var canBeObject = function (obj) {
	return typeof obj !== 'undefined' && obj !== null;
};

var assignShim = function assign(target, source1) {
	if (!canBeObject(target)) { throw new TypeError('target must be an object'); }
	var objTarget = Object(target);
	var s, source, i, props;
	for (s = 1; s < arguments.length; ++s) {
		source = Object(arguments[s]);
		props = keys(source);
		for (i = 0; i < props.length; ++i) {
			objTarget[props[i]] = source[props[i]];
		}
	}
	return objTarget;
};

assignShim.shim = function shimObjectAssign() {
	if (!Object.assign) {
		Object.assign = assignShim;
	}
	return Object.assign || assignShim;
};

module.exports = assignShim;


},{"object-keys":52}],52:[function(require,module,exports){
'use strict';

// modified from https://github.com/es-shims/es5-shim
var has = Object.prototype.hasOwnProperty;
var toStr = Object.prototype.toString;
var isArgs = require('./isArguments');
var hasDontEnumBug = !({ 'toString': null }).propertyIsEnumerable('toString');
var hasProtoEnumBug = function () {}.propertyIsEnumerable('prototype');
var dontEnums = [
	'toString',
	'toLocaleString',
	'valueOf',
	'hasOwnProperty',
	'isPrototypeOf',
	'propertyIsEnumerable',
	'constructor'
];

var keysShim = function keys(object) {
	var isObject = object !== null && typeof object === 'object';
	var isFunction = toStr.call(object) === '[object Function]';
	var isArguments = isArgs(object);
	var isString = isObject && toStr.call(object) === '[object String]';
	var theKeys = [];

	if (!isObject && !isFunction && !isArguments) {
		throw new TypeError('Object.keys called on a non-object');
	}

	var skipProto = hasProtoEnumBug && isFunction;
	if (isString && object.length > 0 && !has.call(object, 0)) {
		for (var i = 0; i < object.length; ++i) {
			theKeys.push(String(i));
		}
	}

	if (isArguments && object.length > 0) {
		for (var j = 0; j < object.length; ++j) {
			theKeys.push(String(j));
		}
	} else {
		for (var name in object) {
			if (!(skipProto && name === 'prototype') && has.call(object, name)) {
				theKeys.push(String(name));
			}
		}
	}

	if (hasDontEnumBug) {
		var ctor = object.constructor;
		var skipConstructor = ctor && ctor.prototype === object;

		for (var k = 0; k < dontEnums.length; ++k) {
			if (!(skipConstructor && dontEnums[k] === 'constructor') && has.call(object, dontEnums[k])) {
				theKeys.push(dontEnums[k]);
			}
		}
	}
	return theKeys;
};

keysShim.shim = function shimObjectKeys() {
	if (!Object.keys) {
		Object.keys = keysShim;
	}
	return Object.keys || keysShim;
};

module.exports = keysShim;

},{"./isArguments":53}],53:[function(require,module,exports){
'use strict';

var toStr = Object.prototype.toString;

module.exports = function isArguments(value) {
	var str = toStr.call(value);
	var isArgs = str === '[object Arguments]';
	if (!isArgs) {
		isArgs = str !== '[object Array]'
			&& value !== null
			&& typeof value === 'object'
			&& typeof value.length === 'number'
			&& value.length >= 0
			&& toStr.call(value.callee) === '[object Function]';
	}
	return isArgs;
};

},{}],54:[function(require,module,exports){
/**
 *  Copyright (c) 2014, Facebook, Inc.
 *  All rights reserved.
 *
 *  This source code is licensed under the BSD-style license found in the
 *  LICENSE file in the root directory of this source tree. An additional grant
 *  of patent rights can be found in the PATENTS file in the same directory.
 */
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
  typeof define === 'function' && define.amd ? define(factory) :
  global.Immutable = factory()
}(this, function () { 'use strict';var SLICE$0 = Array.prototype.slice;

  function createClass(ctor, superClass) {
    if (superClass) {
      ctor.prototype = Object.create(superClass.prototype);
    }
    ctor.prototype.constructor = ctor;
  }

  // Used for setting prototype methods that IE8 chokes on.
  var DELETE = 'delete';

  // Constants describing the size of trie nodes.
  var SHIFT = 5; // Resulted in best performance after ______?
  var SIZE = 1 << SHIFT;
  var MASK = SIZE - 1;

  // A consistent shared value representing "not set" which equals nothing other
  // than itself, and nothing that could be provided externally.
  var NOT_SET = {};

  // Boolean references, Rough equivalent of `bool &`.
  var CHANGE_LENGTH = { value: false };
  var DID_ALTER = { value: false };

  function MakeRef(ref) {
    ref.value = false;
    return ref;
  }

  function SetRef(ref) {
    ref && (ref.value = true);
  }

  // A function which returns a value representing an "owner" for transient writes
  // to tries. The return value will only ever equal itself, and will not equal
  // the return of any subsequent call of this function.
  function OwnerID() {}

  // http://jsperf.com/copy-array-inline
  function arrCopy(arr, offset) {
    offset = offset || 0;
    var len = Math.max(0, arr.length - offset);
    var newArr = new Array(len);
    for (var ii = 0; ii < len; ii++) {
      newArr[ii] = arr[ii + offset];
    }
    return newArr;
  }

  function ensureSize(iter) {
    if (iter.size === undefined) {
      iter.size = iter.__iterate(returnTrue);
    }
    return iter.size;
  }

  function wrapIndex(iter, index) {
    return index >= 0 ? (+index) : ensureSize(iter) + (+index);
  }

  function returnTrue() {
    return true;
  }

  function wholeSlice(begin, end, size) {
    return (begin === 0 || (size !== undefined && begin <= -size)) &&
      (end === undefined || (size !== undefined && end >= size));
  }

  function resolveBegin(begin, size) {
    return resolveIndex(begin, size, 0);
  }

  function resolveEnd(end, size) {
    return resolveIndex(end, size, size);
  }

  function resolveIndex(index, size, defaultIndex) {
    return index === undefined ?
      defaultIndex :
      index < 0 ?
        Math.max(0, size + index) :
        size === undefined ?
          index :
          Math.min(size, index);
  }

  function Iterable(value) {
      return isIterable(value) ? value : Seq(value);
    }


  createClass(KeyedIterable, Iterable);
    function KeyedIterable(value) {
      return isKeyed(value) ? value : KeyedSeq(value);
    }


  createClass(IndexedIterable, Iterable);
    function IndexedIterable(value) {
      return isIndexed(value) ? value : IndexedSeq(value);
    }


  createClass(SetIterable, Iterable);
    function SetIterable(value) {
      return isIterable(value) && !isAssociative(value) ? value : SetSeq(value);
    }



  function isIterable(maybeIterable) {
    return !!(maybeIterable && maybeIterable[IS_ITERABLE_SENTINEL]);
  }

  function isKeyed(maybeKeyed) {
    return !!(maybeKeyed && maybeKeyed[IS_KEYED_SENTINEL]);
  }

  function isIndexed(maybeIndexed) {
    return !!(maybeIndexed && maybeIndexed[IS_INDEXED_SENTINEL]);
  }

  function isAssociative(maybeAssociative) {
    return isKeyed(maybeAssociative) || isIndexed(maybeAssociative);
  }

  function isOrdered(maybeOrdered) {
    return !!(maybeOrdered && maybeOrdered[IS_ORDERED_SENTINEL]);
  }

  Iterable.isIterable = isIterable;
  Iterable.isKeyed = isKeyed;
  Iterable.isIndexed = isIndexed;
  Iterable.isAssociative = isAssociative;
  Iterable.isOrdered = isOrdered;

  Iterable.Keyed = KeyedIterable;
  Iterable.Indexed = IndexedIterable;
  Iterable.Set = SetIterable;


  var IS_ITERABLE_SENTINEL = '@@__IMMUTABLE_ITERABLE__@@';
  var IS_KEYED_SENTINEL = '@@__IMMUTABLE_KEYED__@@';
  var IS_INDEXED_SENTINEL = '@@__IMMUTABLE_INDEXED__@@';
  var IS_ORDERED_SENTINEL = '@@__IMMUTABLE_ORDERED__@@';

  /* global Symbol */

  var ITERATE_KEYS = 0;
  var ITERATE_VALUES = 1;
  var ITERATE_ENTRIES = 2;

  var REAL_ITERATOR_SYMBOL = typeof Symbol === 'function' && Symbol.iterator;
  var FAUX_ITERATOR_SYMBOL = '@@iterator';

  var ITERATOR_SYMBOL = REAL_ITERATOR_SYMBOL || FAUX_ITERATOR_SYMBOL;


  function Iterator(next) {
      this.next = next;
    }

    Iterator.prototype.toString = function() {
      return '[Iterator]';
    };


  Iterator.KEYS = ITERATE_KEYS;
  Iterator.VALUES = ITERATE_VALUES;
  Iterator.ENTRIES = ITERATE_ENTRIES;

  Iterator.prototype.inspect =
  Iterator.prototype.toSource = function () { return this.toString(); }
  Iterator.prototype[ITERATOR_SYMBOL] = function () {
    return this;
  };


  function iteratorValue(type, k, v, iteratorResult) {
    var value = type === 0 ? k : type === 1 ? v : [k, v];
    iteratorResult ? (iteratorResult.value = value) : (iteratorResult = {
      value: value, done: false
    });
    return iteratorResult;
  }

  function iteratorDone() {
    return { value: undefined, done: true };
  }

  function hasIterator(maybeIterable) {
    return !!getIteratorFn(maybeIterable);
  }

  function isIterator(maybeIterator) {
    return maybeIterator && typeof maybeIterator.next === 'function';
  }

  function getIterator(iterable) {
    var iteratorFn = getIteratorFn(iterable);
    return iteratorFn && iteratorFn.call(iterable);
  }

  function getIteratorFn(iterable) {
    var iteratorFn = iterable && (
      (REAL_ITERATOR_SYMBOL && iterable[REAL_ITERATOR_SYMBOL]) ||
      iterable[FAUX_ITERATOR_SYMBOL]
    );
    if (typeof iteratorFn === 'function') {
      return iteratorFn;
    }
  }

  function isArrayLike(value) {
    return value && typeof value.length === 'number';
  }

  createClass(Seq, Iterable);
    function Seq(value) {
      return value === null || value === undefined ? emptySequence() :
        isIterable(value) ? value.toSeq() : seqFromValue(value);
    }

    Seq.of = function(/*...values*/) {
      return Seq(arguments);
    };

    Seq.prototype.toSeq = function() {
      return this;
    };

    Seq.prototype.toString = function() {
      return this.__toString('Seq {', '}');
    };

    Seq.prototype.cacheResult = function() {
      if (!this._cache && this.__iterateUncached) {
        this._cache = this.entrySeq().toArray();
        this.size = this._cache.length;
      }
      return this;
    };

    // abstract __iterateUncached(fn, reverse)

    Seq.prototype.__iterate = function(fn, reverse) {
      return seqIterate(this, fn, reverse, true);
    };

    // abstract __iteratorUncached(type, reverse)

    Seq.prototype.__iterator = function(type, reverse) {
      return seqIterator(this, type, reverse, true);
    };



  createClass(KeyedSeq, Seq);
    function KeyedSeq(value) {
      return value === null || value === undefined ?
        emptySequence().toKeyedSeq() :
        isIterable(value) ?
          (isKeyed(value) ? value.toSeq() : value.fromEntrySeq()) :
          keyedSeqFromValue(value);
    }

    KeyedSeq.of = function(/*...values*/) {
      return KeyedSeq(arguments);
    };

    KeyedSeq.prototype.toKeyedSeq = function() {
      return this;
    };

    KeyedSeq.prototype.toSeq = function() {
      return this;
    };



  createClass(IndexedSeq, Seq);
    function IndexedSeq(value) {
      return value === null || value === undefined ? emptySequence() :
        !isIterable(value) ? indexedSeqFromValue(value) :
        isKeyed(value) ? value.entrySeq() : value.toIndexedSeq();
    }

    IndexedSeq.of = function(/*...values*/) {
      return IndexedSeq(arguments);
    };

    IndexedSeq.prototype.toIndexedSeq = function() {
      return this;
    };

    IndexedSeq.prototype.toString = function() {
      return this.__toString('Seq [', ']');
    };

    IndexedSeq.prototype.__iterate = function(fn, reverse) {
      return seqIterate(this, fn, reverse, false);
    };

    IndexedSeq.prototype.__iterator = function(type, reverse) {
      return seqIterator(this, type, reverse, false);
    };



  createClass(SetSeq, Seq);
    function SetSeq(value) {
      return (
        value === null || value === undefined ? emptySequence() :
        !isIterable(value) ? indexedSeqFromValue(value) :
        isKeyed(value) ? value.entrySeq() : value
      ).toSetSeq();
    }

    SetSeq.of = function(/*...values*/) {
      return SetSeq(arguments);
    };

    SetSeq.prototype.toSetSeq = function() {
      return this;
    };



  Seq.isSeq = isSeq;
  Seq.Keyed = KeyedSeq;
  Seq.Set = SetSeq;
  Seq.Indexed = IndexedSeq;

  var IS_SEQ_SENTINEL = '@@__IMMUTABLE_SEQ__@@';

  Seq.prototype[IS_SEQ_SENTINEL] = true;



  // #pragma Root Sequences

  createClass(ArraySeq, IndexedSeq);
    function ArraySeq(array) {
      this._array = array;
      this.size = array.length;
    }

    ArraySeq.prototype.get = function(index, notSetValue) {
      return this.has(index) ? this._array[wrapIndex(this, index)] : notSetValue;
    };

    ArraySeq.prototype.__iterate = function(fn, reverse) {
      var array = this._array;
      var maxIndex = array.length - 1;
      for (var ii = 0; ii <= maxIndex; ii++) {
        if (fn(array[reverse ? maxIndex - ii : ii], ii, this) === false) {
          return ii + 1;
        }
      }
      return ii;
    };

    ArraySeq.prototype.__iterator = function(type, reverse) {
      var array = this._array;
      var maxIndex = array.length - 1;
      var ii = 0;
      return new Iterator(function() 
        {return ii > maxIndex ?
          iteratorDone() :
          iteratorValue(type, ii, array[reverse ? maxIndex - ii++ : ii++])}
      );
    };



  createClass(ObjectSeq, KeyedSeq);
    function ObjectSeq(object) {
      var keys = Object.keys(object);
      this._object = object;
      this._keys = keys;
      this.size = keys.length;
    }

    ObjectSeq.prototype.get = function(key, notSetValue) {
      if (notSetValue !== undefined && !this.has(key)) {
        return notSetValue;
      }
      return this._object[key];
    };

    ObjectSeq.prototype.has = function(key) {
      return this._object.hasOwnProperty(key);
    };

    ObjectSeq.prototype.__iterate = function(fn, reverse) {
      var object = this._object;
      var keys = this._keys;
      var maxIndex = keys.length - 1;
      for (var ii = 0; ii <= maxIndex; ii++) {
        var key = keys[reverse ? maxIndex - ii : ii];
        if (fn(object[key], key, this) === false) {
          return ii + 1;
        }
      }
      return ii;
    };

    ObjectSeq.prototype.__iterator = function(type, reverse) {
      var object = this._object;
      var keys = this._keys;
      var maxIndex = keys.length - 1;
      var ii = 0;
      return new Iterator(function()  {
        var key = keys[reverse ? maxIndex - ii : ii];
        return ii++ > maxIndex ?
          iteratorDone() :
          iteratorValue(type, key, object[key]);
      });
    };

  ObjectSeq.prototype[IS_ORDERED_SENTINEL] = true;


  createClass(IterableSeq, IndexedSeq);
    function IterableSeq(iterable) {
      this._iterable = iterable;
      this.size = iterable.length || iterable.size;
    }

    IterableSeq.prototype.__iterateUncached = function(fn, reverse) {
      if (reverse) {
        return this.cacheResult().__iterate(fn, reverse);
      }
      var iterable = this._iterable;
      var iterator = getIterator(iterable);
      var iterations = 0;
      if (isIterator(iterator)) {
        var step;
        while (!(step = iterator.next()).done) {
          if (fn(step.value, iterations++, this) === false) {
            break;
          }
        }
      }
      return iterations;
    };

    IterableSeq.prototype.__iteratorUncached = function(type, reverse) {
      if (reverse) {
        return this.cacheResult().__iterator(type, reverse);
      }
      var iterable = this._iterable;
      var iterator = getIterator(iterable);
      if (!isIterator(iterator)) {
        return new Iterator(iteratorDone);
      }
      var iterations = 0;
      return new Iterator(function()  {
        var step = iterator.next();
        return step.done ? step : iteratorValue(type, iterations++, step.value);
      });
    };



  createClass(IteratorSeq, IndexedSeq);
    function IteratorSeq(iterator) {
      this._iterator = iterator;
      this._iteratorCache = [];
    }

    IteratorSeq.prototype.__iterateUncached = function(fn, reverse) {
      if (reverse) {
        return this.cacheResult().__iterate(fn, reverse);
      }
      var iterator = this._iterator;
      var cache = this._iteratorCache;
      var iterations = 0;
      while (iterations < cache.length) {
        if (fn(cache[iterations], iterations++, this) === false) {
          return iterations;
        }
      }
      var step;
      while (!(step = iterator.next()).done) {
        var val = step.value;
        cache[iterations] = val;
        if (fn(val, iterations++, this) === false) {
          break;
        }
      }
      return iterations;
    };

    IteratorSeq.prototype.__iteratorUncached = function(type, reverse) {
      if (reverse) {
        return this.cacheResult().__iterator(type, reverse);
      }
      var iterator = this._iterator;
      var cache = this._iteratorCache;
      var iterations = 0;
      return new Iterator(function()  {
        if (iterations >= cache.length) {
          var step = iterator.next();
          if (step.done) {
            return step;
          }
          cache[iterations] = step.value;
        }
        return iteratorValue(type, iterations, cache[iterations++]);
      });
    };




  // # pragma Helper functions

  function isSeq(maybeSeq) {
    return !!(maybeSeq && maybeSeq[IS_SEQ_SENTINEL]);
  }

  var EMPTY_SEQ;

  function emptySequence() {
    return EMPTY_SEQ || (EMPTY_SEQ = new ArraySeq([]));
  }

  function keyedSeqFromValue(value) {
    var seq =
      Array.isArray(value) ? new ArraySeq(value).fromEntrySeq() :
      isIterator(value) ? new IteratorSeq(value).fromEntrySeq() :
      hasIterator(value) ? new IterableSeq(value).fromEntrySeq() :
      typeof value === 'object' ? new ObjectSeq(value) :
      undefined;
    if (!seq) {
      throw new TypeError(
        'Expected Array or iterable object of [k, v] entries, '+
        'or keyed object: ' + value
      );
    }
    return seq;
  }

  function indexedSeqFromValue(value) {
    var seq = maybeIndexedSeqFromValue(value);
    if (!seq) {
      throw new TypeError(
        'Expected Array or iterable object of values: ' + value
      );
    }
    return seq;
  }

  function seqFromValue(value) {
    var seq = maybeIndexedSeqFromValue(value) ||
      (typeof value === 'object' && new ObjectSeq(value));
    if (!seq) {
      throw new TypeError(
        'Expected Array or iterable object of values, or keyed object: ' + value
      );
    }
    return seq;
  }

  function maybeIndexedSeqFromValue(value) {
    return (
      isArrayLike(value) ? new ArraySeq(value) :
      isIterator(value) ? new IteratorSeq(value) :
      hasIterator(value) ? new IterableSeq(value) :
      undefined
    );
  }

  function seqIterate(seq, fn, reverse, useKeys) {
    var cache = seq._cache;
    if (cache) {
      var maxIndex = cache.length - 1;
      for (var ii = 0; ii <= maxIndex; ii++) {
        var entry = cache[reverse ? maxIndex - ii : ii];
        if (fn(entry[1], useKeys ? entry[0] : ii, seq) === false) {
          return ii + 1;
        }
      }
      return ii;
    }
    return seq.__iterateUncached(fn, reverse);
  }

  function seqIterator(seq, type, reverse, useKeys) {
    var cache = seq._cache;
    if (cache) {
      var maxIndex = cache.length - 1;
      var ii = 0;
      return new Iterator(function()  {
        var entry = cache[reverse ? maxIndex - ii : ii];
        return ii++ > maxIndex ?
          iteratorDone() :
          iteratorValue(type, useKeys ? entry[0] : ii - 1, entry[1]);
      });
    }
    return seq.__iteratorUncached(type, reverse);
  }

  createClass(Collection, Iterable);
    function Collection() {
      throw TypeError('Abstract');
    }


  createClass(KeyedCollection, Collection);function KeyedCollection() {}

  createClass(IndexedCollection, Collection);function IndexedCollection() {}

  createClass(SetCollection, Collection);function SetCollection() {}


  Collection.Keyed = KeyedCollection;
  Collection.Indexed = IndexedCollection;
  Collection.Set = SetCollection;

  /**
   * An extension of the "same-value" algorithm as [described for use by ES6 Map
   * and Set](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map#Key_equality)
   *
   * NaN is considered the same as NaN, however -0 and 0 are considered the same
   * value, which is different from the algorithm described by
   * [`Object.is`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is).
   *
   * This is extended further to allow Objects to describe the values they
   * represent, by way of `valueOf` or `equals` (and `hashCode`).
   *
   * Note: because of this extension, the key equality of Immutable.Map and the
   * value equality of Immutable.Set will differ from ES6 Map and Set.
   *
   * ### Defining custom values
   *
   * The easiest way to describe the value an object represents is by implementing
   * `valueOf`. For example, `Date` represents a value by returning a unix
   * timestamp for `valueOf`:
   *
   *     var date1 = new Date(1234567890000); // Fri Feb 13 2009 ...
   *     var date2 = new Date(1234567890000);
   *     date1.valueOf(); // 1234567890000
   *     assert( date1 !== date2 );
   *     assert( Immutable.is( date1, date2 ) );
   *
   * Note: overriding `valueOf` may have other implications if you use this object
   * where JavaScript expects a primitive, such as implicit string coercion.
   *
   * For more complex types, especially collections, implementing `valueOf` may
   * not be performant. An alternative is to implement `equals` and `hashCode`.
   *
   * `equals` takes another object, presumably of similar type, and returns true
   * if the it is equal. Equality is symmetrical, so the same result should be
   * returned if this and the argument are flipped.
   *
   *     assert( a.equals(b) === b.equals(a) );
   *
   * `hashCode` returns a 32bit integer number representing the object which will
   * be used to determine how to store the value object in a Map or Set. You must
   * provide both or neither methods, one must not exist without the other.
   *
   * Also, an important relationship between these methods must be upheld: if two
   * values are equal, they *must* return the same hashCode. If the values are not
   * equal, they might have the same hashCode; this is called a hash collision,
   * and while undesirable for performance reasons, it is acceptable.
   *
   *     if (a.equals(b)) {
   *       assert( a.hashCode() === b.hashCode() );
   *     }
   *
   * All Immutable collections implement `equals` and `hashCode`.
   *
   */
  function is(valueA, valueB) {
    if (valueA === valueB || (valueA !== valueA && valueB !== valueB)) {
      return true;
    }
    if (!valueA || !valueB) {
      return false;
    }
    if (typeof valueA.valueOf === 'function' &&
        typeof valueB.valueOf === 'function') {
      valueA = valueA.valueOf();
      valueB = valueB.valueOf();
    }
    return typeof valueA.equals === 'function' &&
      typeof valueB.equals === 'function' ?
        valueA.equals(valueB) :
        valueA === valueB || (valueA !== valueA && valueB !== valueB);
  }

  function fromJS(json, converter) {
    return converter ?
      fromJSWith(converter, json, '', {'': json}) :
      fromJSDefault(json);
  }

  function fromJSWith(converter, json, key, parentJSON) {
    if (Array.isArray(json)) {
      return converter.call(parentJSON, key, IndexedSeq(json).map(function(v, k)  {return fromJSWith(converter, v, k, json)}));
    }
    if (isPlainObj(json)) {
      return converter.call(parentJSON, key, KeyedSeq(json).map(function(v, k)  {return fromJSWith(converter, v, k, json)}));
    }
    return json;
  }

  function fromJSDefault(json) {
    if (Array.isArray(json)) {
      return IndexedSeq(json).map(fromJSDefault).toList();
    }
    if (isPlainObj(json)) {
      return KeyedSeq(json).map(fromJSDefault).toMap();
    }
    return json;
  }

  function isPlainObj(value) {
    return value && value.constructor === Object;
  }

  var Math__imul =
    typeof Math.imul === 'function' && Math.imul(0xffffffff, 2) === -2 ?
    Math.imul :
    function Math__imul(a, b) {
      a = a | 0; // int
      b = b | 0; // int
      var c = a & 0xffff;
      var d = b & 0xffff;
      // Shift by 0 fixes the sign on the high part.
      return (c * d) + ((((a >>> 16) * d + c * (b >>> 16)) << 16) >>> 0) | 0; // int
    };

  // v8 has an optimization for storing 31-bit signed numbers.
  // Values which have either 00 or 11 as the high order bits qualify.
  // This function drops the highest order bit in a signed number, maintaining
  // the sign bit.
  function smi(i32) {
    return ((i32 >>> 1) & 0x40000000) | (i32 & 0xBFFFFFFF);
  }

  function hash(o) {
    if (o === false || o === null || o === undefined) {
      return 0;
    }
    if (typeof o.valueOf === 'function') {
      o = o.valueOf();
      if (o === false || o === null || o === undefined) {
        return 0;
      }
    }
    if (o === true) {
      return 1;
    }
    var type = typeof o;
    if (type === 'number') {
      var h = o | 0;
      if (h !== o) {
        h ^= o * 0xFFFFFFFF;
      }
      while (o > 0xFFFFFFFF) {
        o /= 0xFFFFFFFF;
        h ^= o;
      }
      return smi(h);
    }
    if (type === 'string') {
      return o.length > STRING_HASH_CACHE_MIN_STRLEN ? cachedHashString(o) : hashString(o);
    }
    if (typeof o.hashCode === 'function') {
      return o.hashCode();
    }
    return hashJSObj(o);
  }

  function cachedHashString(string) {
    var hash = stringHashCache[string];
    if (hash === undefined) {
      hash = hashString(string);
      if (STRING_HASH_CACHE_SIZE === STRING_HASH_CACHE_MAX_SIZE) {
        STRING_HASH_CACHE_SIZE = 0;
        stringHashCache = {};
      }
      STRING_HASH_CACHE_SIZE++;
      stringHashCache[string] = hash;
    }
    return hash;
  }

  // http://jsperf.com/hashing-strings
  function hashString(string) {
    // This is the hash from JVM
    // The hash code for a string is computed as
    // s[0] * 31 ^ (n - 1) + s[1] * 31 ^ (n - 2) + ... + s[n - 1],
    // where s[i] is the ith character of the string and n is the length of
    // the string. We "mod" the result to make it between 0 (inclusive) and 2^31
    // (exclusive) by dropping high bits.
    var hash = 0;
    for (var ii = 0; ii < string.length; ii++) {
      hash = 31 * hash + string.charCodeAt(ii) | 0;
    }
    return smi(hash);
  }

  function hashJSObj(obj) {
    var hash = weakMap && weakMap.get(obj);
    if (hash) return hash;

    hash = obj[UID_HASH_KEY];
    if (hash) return hash;

    if (!canDefineProperty) {
      hash = obj.propertyIsEnumerable && obj.propertyIsEnumerable[UID_HASH_KEY];
      if (hash) return hash;

      hash = getIENodeHash(obj);
      if (hash) return hash;
    }

    if (Object.isExtensible && !Object.isExtensible(obj)) {
      throw new Error('Non-extensible objects are not allowed as keys.');
    }

    hash = ++objHashUID;
    if (objHashUID & 0x40000000) {
      objHashUID = 0;
    }

    if (weakMap) {
      weakMap.set(obj, hash);
    } else if (canDefineProperty) {
      Object.defineProperty(obj, UID_HASH_KEY, {
        'enumerable': false,
        'configurable': false,
        'writable': false,
        'value': hash
      });
    } else if (obj.propertyIsEnumerable &&
               obj.propertyIsEnumerable === obj.constructor.prototype.propertyIsEnumerable) {
      // Since we can't define a non-enumerable property on the object
      // we'll hijack one of the less-used non-enumerable properties to
      // save our hash on it. Since this is a function it will not show up in
      // `JSON.stringify` which is what we want.
      obj.propertyIsEnumerable = function() {
        return this.constructor.prototype.propertyIsEnumerable.apply(this, arguments);
      };
      obj.propertyIsEnumerable[UID_HASH_KEY] = hash;
    } else if (obj.nodeType) {
      // At this point we couldn't get the IE `uniqueID` to use as a hash
      // and we couldn't use a non-enumerable property to exploit the
      // dontEnum bug so we simply add the `UID_HASH_KEY` on the node
      // itself.
      obj[UID_HASH_KEY] = hash;
    } else {
      throw new Error('Unable to set a non-enumerable property on object.');
    }

    return hash;
  }

  // True if Object.defineProperty works as expected. IE8 fails this test.
  var canDefineProperty = (function() {
    try {
      Object.defineProperty({}, 'x', {});
      return true;
    } catch (e) {
      return false;
    }
  }());

  // IE has a `uniqueID` property on DOM nodes. We can construct the hash from it
  // and avoid memory leaks from the IE cloneNode bug.
  function getIENodeHash(node) {
    if (node && node.nodeType > 0) {
      switch (node.nodeType) {
        case 1: // Element
          return node.uniqueID;
        case 9: // Document
          return node.documentElement && node.documentElement.uniqueID;
      }
    }
  }

  // If possible, use a WeakMap.
  var weakMap = typeof WeakMap === 'function' && new WeakMap();

  var objHashUID = 0;

  var UID_HASH_KEY = '__immutablehash__';
  if (typeof Symbol === 'function') {
    UID_HASH_KEY = Symbol(UID_HASH_KEY);
  }

  var STRING_HASH_CACHE_MIN_STRLEN = 16;
  var STRING_HASH_CACHE_MAX_SIZE = 255;
  var STRING_HASH_CACHE_SIZE = 0;
  var stringHashCache = {};

  function invariant(condition, error) {
    if (!condition) throw new Error(error);
  }

  function assertNotInfinite(size) {
    invariant(
      size !== Infinity,
      'Cannot perform this action with an infinite size.'
    );
  }

  createClass(ToKeyedSequence, KeyedSeq);
    function ToKeyedSequence(indexed, useKeys) {
      this._iter = indexed;
      this._useKeys = useKeys;
      this.size = indexed.size;
    }

    ToKeyedSequence.prototype.get = function(key, notSetValue) {
      return this._iter.get(key, notSetValue);
    };

    ToKeyedSequence.prototype.has = function(key) {
      return this._iter.has(key);
    };

    ToKeyedSequence.prototype.valueSeq = function() {
      return this._iter.valueSeq();
    };

    ToKeyedSequence.prototype.reverse = function() {var this$0 = this;
      var reversedSequence = reverseFactory(this, true);
      if (!this._useKeys) {
        reversedSequence.valueSeq = function()  {return this$0._iter.toSeq().reverse()};
      }
      return reversedSequence;
    };

    ToKeyedSequence.prototype.map = function(mapper, context) {var this$0 = this;
      var mappedSequence = mapFactory(this, mapper, context);
      if (!this._useKeys) {
        mappedSequence.valueSeq = function()  {return this$0._iter.toSeq().map(mapper, context)};
      }
      return mappedSequence;
    };

    ToKeyedSequence.prototype.__iterate = function(fn, reverse) {var this$0 = this;
      var ii;
      return this._iter.__iterate(
        this._useKeys ?
          function(v, k)  {return fn(v, k, this$0)} :
          ((ii = reverse ? resolveSize(this) : 0),
            function(v ) {return fn(v, reverse ? --ii : ii++, this$0)}),
        reverse
      );
    };

    ToKeyedSequence.prototype.__iterator = function(type, reverse) {
      if (this._useKeys) {
        return this._iter.__iterator(type, reverse);
      }
      var iterator = this._iter.__iterator(ITERATE_VALUES, reverse);
      var ii = reverse ? resolveSize(this) : 0;
      return new Iterator(function()  {
        var step = iterator.next();
        return step.done ? step :
          iteratorValue(type, reverse ? --ii : ii++, step.value, step);
      });
    };

  ToKeyedSequence.prototype[IS_ORDERED_SENTINEL] = true;


  createClass(ToIndexedSequence, IndexedSeq);
    function ToIndexedSequence(iter) {
      this._iter = iter;
      this.size = iter.size;
    }

    ToIndexedSequence.prototype.contains = function(value) {
      return this._iter.contains(value);
    };

    ToIndexedSequence.prototype.__iterate = function(fn, reverse) {var this$0 = this;
      var iterations = 0;
      return this._iter.__iterate(function(v ) {return fn(v, iterations++, this$0)}, reverse);
    };

    ToIndexedSequence.prototype.__iterator = function(type, reverse) {
      var iterator = this._iter.__iterator(ITERATE_VALUES, reverse);
      var iterations = 0;
      return new Iterator(function()  {
        var step = iterator.next();
        return step.done ? step :
          iteratorValue(type, iterations++, step.value, step)
      });
    };



  createClass(ToSetSequence, SetSeq);
    function ToSetSequence(iter) {
      this._iter = iter;
      this.size = iter.size;
    }

    ToSetSequence.prototype.has = function(key) {
      return this._iter.contains(key);
    };

    ToSetSequence.prototype.__iterate = function(fn, reverse) {var this$0 = this;
      return this._iter.__iterate(function(v ) {return fn(v, v, this$0)}, reverse);
    };

    ToSetSequence.prototype.__iterator = function(type, reverse) {
      var iterator = this._iter.__iterator(ITERATE_VALUES, reverse);
      return new Iterator(function()  {
        var step = iterator.next();
        return step.done ? step :
          iteratorValue(type, step.value, step.value, step);
      });
    };



  createClass(FromEntriesSequence, KeyedSeq);
    function FromEntriesSequence(entries) {
      this._iter = entries;
      this.size = entries.size;
    }

    FromEntriesSequence.prototype.entrySeq = function() {
      return this._iter.toSeq();
    };

    FromEntriesSequence.prototype.__iterate = function(fn, reverse) {var this$0 = this;
      return this._iter.__iterate(function(entry ) {
        // Check if entry exists first so array access doesn't throw for holes
        // in the parent iteration.
        if (entry) {
          validateEntry(entry);
          return fn(entry[1], entry[0], this$0);
        }
      }, reverse);
    };

    FromEntriesSequence.prototype.__iterator = function(type, reverse) {
      var iterator = this._iter.__iterator(ITERATE_VALUES, reverse);
      return new Iterator(function()  {
        while (true) {
          var step = iterator.next();
          if (step.done) {
            return step;
          }
          var entry = step.value;
          // Check if entry exists first so array access doesn't throw for holes
          // in the parent iteration.
          if (entry) {
            validateEntry(entry);
            return type === ITERATE_ENTRIES ? step :
              iteratorValue(type, entry[0], entry[1], step);
          }
        }
      });
    };


  ToIndexedSequence.prototype.cacheResult =
  ToKeyedSequence.prototype.cacheResult =
  ToSetSequence.prototype.cacheResult =
  FromEntriesSequence.prototype.cacheResult =
    cacheResultThrough;


  function flipFactory(iterable) {
    var flipSequence = makeSequence(iterable);
    flipSequence._iter = iterable;
    flipSequence.size = iterable.size;
    flipSequence.flip = function()  {return iterable};
    flipSequence.reverse = function () {
      var reversedSequence = iterable.reverse.apply(this); // super.reverse()
      reversedSequence.flip = function()  {return iterable.reverse()};
      return reversedSequence;
    };
    flipSequence.has = function(key ) {return iterable.contains(key)};
    flipSequence.contains = function(key ) {return iterable.has(key)};
    flipSequence.cacheResult = cacheResultThrough;
    flipSequence.__iterateUncached = function (fn, reverse) {var this$0 = this;
      return iterable.__iterate(function(v, k)  {return fn(k, v, this$0) !== false}, reverse);
    }
    flipSequence.__iteratorUncached = function(type, reverse) {
      if (type === ITERATE_ENTRIES) {
        var iterator = iterable.__iterator(type, reverse);
        return new Iterator(function()  {
          var step = iterator.next();
          if (!step.done) {
            var k = step.value[0];
            step.value[0] = step.value[1];
            step.value[1] = k;
          }
          return step;
        });
      }
      return iterable.__iterator(
        type === ITERATE_VALUES ? ITERATE_KEYS : ITERATE_VALUES,
        reverse
      );
    }
    return flipSequence;
  }


  function mapFactory(iterable, mapper, context) {
    var mappedSequence = makeSequence(iterable);
    mappedSequence.size = iterable.size;
    mappedSequence.has = function(key ) {return iterable.has(key)};
    mappedSequence.get = function(key, notSetValue)  {
      var v = iterable.get(key, NOT_SET);
      return v === NOT_SET ?
        notSetValue :
        mapper.call(context, v, key, iterable);
    };
    mappedSequence.__iterateUncached = function (fn, reverse) {var this$0 = this;
      return iterable.__iterate(
        function(v, k, c)  {return fn(mapper.call(context, v, k, c), k, this$0) !== false},
        reverse
      );
    }
    mappedSequence.__iteratorUncached = function (type, reverse) {
      var iterator = iterable.__iterator(ITERATE_ENTRIES, reverse);
      return new Iterator(function()  {
        var step = iterator.next();
        if (step.done) {
          return step;
        }
        var entry = step.value;
        var key = entry[0];
        return iteratorValue(
          type,
          key,
          mapper.call(context, entry[1], key, iterable),
          step
        );
      });
    }
    return mappedSequence;
  }


  function reverseFactory(iterable, useKeys) {
    var reversedSequence = makeSequence(iterable);
    reversedSequence._iter = iterable;
    reversedSequence.size = iterable.size;
    reversedSequence.reverse = function()  {return iterable};
    if (iterable.flip) {
      reversedSequence.flip = function () {
        var flipSequence = flipFactory(iterable);
        flipSequence.reverse = function()  {return iterable.flip()};
        return flipSequence;
      };
    }
    reversedSequence.get = function(key, notSetValue) 
      {return iterable.get(useKeys ? key : -1 - key, notSetValue)};
    reversedSequence.has = function(key )
      {return iterable.has(useKeys ? key : -1 - key)};
    reversedSequence.contains = function(value ) {return iterable.contains(value)};
    reversedSequence.cacheResult = cacheResultThrough;
    reversedSequence.__iterate = function (fn, reverse) {var this$0 = this;
      return iterable.__iterate(function(v, k)  {return fn(v, k, this$0)}, !reverse);
    };
    reversedSequence.__iterator =
      function(type, reverse)  {return iterable.__iterator(type, !reverse)};
    return reversedSequence;
  }


  function filterFactory(iterable, predicate, context, useKeys) {
    var filterSequence = makeSequence(iterable);
    if (useKeys) {
      filterSequence.has = function(key ) {
        var v = iterable.get(key, NOT_SET);
        return v !== NOT_SET && !!predicate.call(context, v, key, iterable);
      };
      filterSequence.get = function(key, notSetValue)  {
        var v = iterable.get(key, NOT_SET);
        return v !== NOT_SET && predicate.call(context, v, key, iterable) ?
          v : notSetValue;
      };
    }
    filterSequence.__iterateUncached = function (fn, reverse) {var this$0 = this;
      var iterations = 0;
      iterable.__iterate(function(v, k, c)  {
        if (predicate.call(context, v, k, c)) {
          iterations++;
          return fn(v, useKeys ? k : iterations - 1, this$0);
        }
      }, reverse);
      return iterations;
    };
    filterSequence.__iteratorUncached = function (type, reverse) {
      var iterator = iterable.__iterator(ITERATE_ENTRIES, reverse);
      var iterations = 0;
      return new Iterator(function()  {
        while (true) {
          var step = iterator.next();
          if (step.done) {
            return step;
          }
          var entry = step.value;
          var key = entry[0];
          var value = entry[1];
          if (predicate.call(context, value, key, iterable)) {
            return iteratorValue(type, useKeys ? key : iterations++, value, step);
          }
        }
      });
    }
    return filterSequence;
  }


  function countByFactory(iterable, grouper, context) {
    var groups = Map().asMutable();
    iterable.__iterate(function(v, k)  {
      groups.update(
        grouper.call(context, v, k, iterable),
        0,
        function(a ) {return a + 1}
      );
    });
    return groups.asImmutable();
  }


  function groupByFactory(iterable, grouper, context) {
    var isKeyedIter = isKeyed(iterable);
    var groups = (isOrdered(iterable) ? OrderedMap() : Map()).asMutable();
    iterable.__iterate(function(v, k)  {
      groups.update(
        grouper.call(context, v, k, iterable),
        function(a ) {return (a = a || [], a.push(isKeyedIter ? [k, v] : v), a)}
      );
    });
    var coerce = iterableClass(iterable);
    return groups.map(function(arr ) {return reify(iterable, coerce(arr))});
  }


  function sliceFactory(iterable, begin, end, useKeys) {
    var originalSize = iterable.size;

    if (wholeSlice(begin, end, originalSize)) {
      return iterable;
    }

    var resolvedBegin = resolveBegin(begin, originalSize);
    var resolvedEnd = resolveEnd(end, originalSize);

    // begin or end will be NaN if they were provided as negative numbers and
    // this iterable's size is unknown. In that case, cache first so there is
    // a known size.
    if (resolvedBegin !== resolvedBegin || resolvedEnd !== resolvedEnd) {
      return sliceFactory(iterable.toSeq().cacheResult(), begin, end, useKeys);
    }

    var sliceSize = resolvedEnd - resolvedBegin;
    if (sliceSize < 0) {
      sliceSize = 0;
    }

    var sliceSeq = makeSequence(iterable);

    sliceSeq.size = sliceSize === 0 ? sliceSize : iterable.size && sliceSize || undefined;

    if (!useKeys && isSeq(iterable) && sliceSize >= 0) {
      sliceSeq.get = function (index, notSetValue) {
        index = wrapIndex(this, index);
        return index >= 0 && index < sliceSize ?
          iterable.get(index + resolvedBegin, notSetValue) :
          notSetValue;
      }
    }

    sliceSeq.__iterateUncached = function(fn, reverse) {var this$0 = this;
      if (sliceSize === 0) {
        return 0;
      }
      if (reverse) {
        return this.cacheResult().__iterate(fn, reverse);
      }
      var skipped = 0;
      var isSkipping = true;
      var iterations = 0;
      iterable.__iterate(function(v, k)  {
        if (!(isSkipping && (isSkipping = skipped++ < resolvedBegin))) {
          iterations++;
          return fn(v, useKeys ? k : iterations - 1, this$0) !== false &&
                 iterations !== sliceSize;
        }
      });
      return iterations;
    };

    sliceSeq.__iteratorUncached = function(type, reverse) {
      if (sliceSize && reverse) {
        return this.cacheResult().__iterator(type, reverse);
      }
      // Don't bother instantiating parent iterator if taking 0.
      var iterator = sliceSize && iterable.__iterator(type, reverse);
      var skipped = 0;
      var iterations = 0;
      return new Iterator(function()  {
        while (skipped++ !== resolvedBegin) {
          iterator.next();
        }
        if (++iterations > sliceSize) {
          return iteratorDone();
        }
        var step = iterator.next();
        if (useKeys || type === ITERATE_VALUES) {
          return step;
        } else if (type === ITERATE_KEYS) {
          return iteratorValue(type, iterations - 1, undefined, step);
        } else {
          return iteratorValue(type, iterations - 1, step.value[1], step);
        }
      });
    }

    return sliceSeq;
  }


  function takeWhileFactory(iterable, predicate, context) {
    var takeSequence = makeSequence(iterable);
    takeSequence.__iterateUncached = function(fn, reverse) {var this$0 = this;
      if (reverse) {
        return this.cacheResult().__iterate(fn, reverse);
      }
      var iterations = 0;
      iterable.__iterate(function(v, k, c) 
        {return predicate.call(context, v, k, c) && ++iterations && fn(v, k, this$0)}
      );
      return iterations;
    };
    takeSequence.__iteratorUncached = function(type, reverse) {var this$0 = this;
      if (reverse) {
        return this.cacheResult().__iterator(type, reverse);
      }
      var iterator = iterable.__iterator(ITERATE_ENTRIES, reverse);
      var iterating = true;
      return new Iterator(function()  {
        if (!iterating) {
          return iteratorDone();
        }
        var step = iterator.next();
        if (step.done) {
          return step;
        }
        var entry = step.value;
        var k = entry[0];
        var v = entry[1];
        if (!predicate.call(context, v, k, this$0)) {
          iterating = false;
          return iteratorDone();
        }
        return type === ITERATE_ENTRIES ? step :
          iteratorValue(type, k, v, step);
      });
    };
    return takeSequence;
  }


  function skipWhileFactory(iterable, predicate, context, useKeys) {
    var skipSequence = makeSequence(iterable);
    skipSequence.__iterateUncached = function (fn, reverse) {var this$0 = this;
      if (reverse) {
        return this.cacheResult().__iterate(fn, reverse);
      }
      var isSkipping = true;
      var iterations = 0;
      iterable.__iterate(function(v, k, c)  {
        if (!(isSkipping && (isSkipping = predicate.call(context, v, k, c)))) {
          iterations++;
          return fn(v, useKeys ? k : iterations - 1, this$0);
        }
      });
      return iterations;
    };
    skipSequence.__iteratorUncached = function(type, reverse) {var this$0 = this;
      if (reverse) {
        return this.cacheResult().__iterator(type, reverse);
      }
      var iterator = iterable.__iterator(ITERATE_ENTRIES, reverse);
      var skipping = true;
      var iterations = 0;
      return new Iterator(function()  {
        var step, k, v;
        do {
          step = iterator.next();
          if (step.done) {
            if (useKeys || type === ITERATE_VALUES) {
              return step;
            } else if (type === ITERATE_KEYS) {
              return iteratorValue(type, iterations++, undefined, step);
            } else {
              return iteratorValue(type, iterations++, step.value[1], step);
            }
          }
          var entry = step.value;
          k = entry[0];
          v = entry[1];
          skipping && (skipping = predicate.call(context, v, k, this$0));
        } while (skipping);
        return type === ITERATE_ENTRIES ? step :
          iteratorValue(type, k, v, step);
      });
    };
    return skipSequence;
  }


  function concatFactory(iterable, values) {
    var isKeyedIterable = isKeyed(iterable);
    var iters = [iterable].concat(values).map(function(v ) {
      if (!isIterable(v)) {
        v = isKeyedIterable ?
          keyedSeqFromValue(v) :
          indexedSeqFromValue(Array.isArray(v) ? v : [v]);
      } else if (isKeyedIterable) {
        v = KeyedIterable(v);
      }
      return v;
    }).filter(function(v ) {return v.size !== 0});

    if (iters.length === 0) {
      return iterable;
    }

    if (iters.length === 1) {
      var singleton = iters[0];
      if (singleton === iterable ||
          isKeyedIterable && isKeyed(singleton) ||
          isIndexed(iterable) && isIndexed(singleton)) {
        return singleton;
      }
    }

    var concatSeq = new ArraySeq(iters);
    if (isKeyedIterable) {
      concatSeq = concatSeq.toKeyedSeq();
    } else if (!isIndexed(iterable)) {
      concatSeq = concatSeq.toSetSeq();
    }
    concatSeq = concatSeq.flatten(true);
    concatSeq.size = iters.reduce(
      function(sum, seq)  {
        if (sum !== undefined) {
          var size = seq.size;
          if (size !== undefined) {
            return sum + size;
          }
        }
      },
      0
    );
    return concatSeq;
  }


  function flattenFactory(iterable, depth, useKeys) {
    var flatSequence = makeSequence(iterable);
    flatSequence.__iterateUncached = function(fn, reverse) {
      var iterations = 0;
      var stopped = false;
      function flatDeep(iter, currentDepth) {var this$0 = this;
        iter.__iterate(function(v, k)  {
          if ((!depth || currentDepth < depth) && isIterable(v)) {
            flatDeep(v, currentDepth + 1);
          } else if (fn(v, useKeys ? k : iterations++, this$0) === false) {
            stopped = true;
          }
          return !stopped;
        }, reverse);
      }
      flatDeep(iterable, 0);
      return iterations;
    }
    flatSequence.__iteratorUncached = function(type, reverse) {
      var iterator = iterable.__iterator(type, reverse);
      var stack = [];
      var iterations = 0;
      return new Iterator(function()  {
        while (iterator) {
          var step = iterator.next();
          if (step.done !== false) {
            iterator = stack.pop();
            continue;
          }
          var v = step.value;
          if (type === ITERATE_ENTRIES) {
            v = v[1];
          }
          if ((!depth || stack.length < depth) && isIterable(v)) {
            stack.push(iterator);
            iterator = v.__iterator(type, reverse);
          } else {
            return useKeys ? step : iteratorValue(type, iterations++, v, step);
          }
        }
        return iteratorDone();
      });
    }
    return flatSequence;
  }


  function flatMapFactory(iterable, mapper, context) {
    var coerce = iterableClass(iterable);
    return iterable.toSeq().map(
      function(v, k)  {return coerce(mapper.call(context, v, k, iterable))}
    ).flatten(true);
  }


  function interposeFactory(iterable, separator) {
    var interposedSequence = makeSequence(iterable);
    interposedSequence.size = iterable.size && iterable.size * 2 -1;
    interposedSequence.__iterateUncached = function(fn, reverse) {var this$0 = this;
      var iterations = 0;
      iterable.__iterate(function(v, k) 
        {return (!iterations || fn(separator, iterations++, this$0) !== false) &&
        fn(v, iterations++, this$0) !== false},
        reverse
      );
      return iterations;
    };
    interposedSequence.__iteratorUncached = function(type, reverse) {
      var iterator = iterable.__iterator(ITERATE_VALUES, reverse);
      var iterations = 0;
      var step;
      return new Iterator(function()  {
        if (!step || iterations % 2) {
          step = iterator.next();
          if (step.done) {
            return step;
          }
        }
        return iterations % 2 ?
          iteratorValue(type, iterations++, separator) :
          iteratorValue(type, iterations++, step.value, step);
      });
    };
    return interposedSequence;
  }


  function sortFactory(iterable, comparator, mapper) {
    if (!comparator) {
      comparator = defaultComparator;
    }
    var isKeyedIterable = isKeyed(iterable);
    var index = 0;
    var entries = iterable.toSeq().map(
      function(v, k)  {return [k, v, index++, mapper ? mapper(v, k, iterable) : v]}
    ).toArray();
    entries.sort(function(a, b)  {return comparator(a[3], b[3]) || a[2] - b[2]}).forEach(
      isKeyedIterable ?
      function(v, i)  { entries[i].length = 2; } :
      function(v, i)  { entries[i] = v[1]; }
    );
    return isKeyedIterable ? KeyedSeq(entries) :
      isIndexed(iterable) ? IndexedSeq(entries) :
      SetSeq(entries);
  }


  function maxFactory(iterable, comparator, mapper) {
    if (!comparator) {
      comparator = defaultComparator;
    }
    if (mapper) {
      var entry = iterable.toSeq()
        .map(function(v, k)  {return [v, mapper(v, k, iterable)]})
        .reduce(function(a, b)  {return maxCompare(comparator, a[1], b[1]) ? b : a});
      return entry && entry[0];
    } else {
      return iterable.reduce(function(a, b)  {return maxCompare(comparator, a, b) ? b : a});
    }
  }

  function maxCompare(comparator, a, b) {
    var comp = comparator(b, a);
    // b is considered the new max if the comparator declares them equal, but
    // they are not equal and b is in fact a nullish value.
    return (comp === 0 && b !== a && (b === undefined || b === null || b !== b)) || comp > 0;
  }


  function zipWithFactory(keyIter, zipper, iters) {
    var zipSequence = makeSequence(keyIter);
    zipSequence.size = new ArraySeq(iters).map(function(i ) {return i.size}).min();
    // Note: this a generic base implementation of __iterate in terms of
    // __iterator which may be more generically useful in the future.
    zipSequence.__iterate = function(fn, reverse) {
      /* generic:
      var iterator = this.__iterator(ITERATE_ENTRIES, reverse);
      var step;
      var iterations = 0;
      while (!(step = iterator.next()).done) {
        iterations++;
        if (fn(step.value[1], step.value[0], this) === false) {
          break;
        }
      }
      return iterations;
      */
      // indexed:
      var iterator = this.__iterator(ITERATE_VALUES, reverse);
      var step;
      var iterations = 0;
      while (!(step = iterator.next()).done) {
        if (fn(step.value, iterations++, this) === false) {
          break;
        }
      }
      return iterations;
    };
    zipSequence.__iteratorUncached = function(type, reverse) {
      var iterators = iters.map(function(i )
        {return (i = Iterable(i), getIterator(reverse ? i.reverse() : i))}
      );
      var iterations = 0;
      var isDone = false;
      return new Iterator(function()  {
        var steps;
        if (!isDone) {
          steps = iterators.map(function(i ) {return i.next()});
          isDone = steps.some(function(s ) {return s.done});
        }
        if (isDone) {
          return iteratorDone();
        }
        return iteratorValue(
          type,
          iterations++,
          zipper.apply(null, steps.map(function(s ) {return s.value}))
        );
      });
    };
    return zipSequence
  }


  // #pragma Helper Functions

  function reify(iter, seq) {
    return isSeq(iter) ? seq : iter.constructor(seq);
  }

  function validateEntry(entry) {
    if (entry !== Object(entry)) {
      throw new TypeError('Expected [K, V] tuple: ' + entry);
    }
  }

  function resolveSize(iter) {
    assertNotInfinite(iter.size);
    return ensureSize(iter);
  }

  function iterableClass(iterable) {
    return isKeyed(iterable) ? KeyedIterable :
      isIndexed(iterable) ? IndexedIterable :
      SetIterable;
  }

  function makeSequence(iterable) {
    return Object.create(
      (
        isKeyed(iterable) ? KeyedSeq :
        isIndexed(iterable) ? IndexedSeq :
        SetSeq
      ).prototype
    );
  }

  function cacheResultThrough() {
    if (this._iter.cacheResult) {
      this._iter.cacheResult();
      this.size = this._iter.size;
      return this;
    } else {
      return Seq.prototype.cacheResult.call(this);
    }
  }

  function defaultComparator(a, b) {
    return a > b ? 1 : a < b ? -1 : 0;
  }

  function forceIterator(keyPath) {
    var iter = getIterator(keyPath);
    if (!iter) {
      // Array might not be iterable in this environment, so we need a fallback
      // to our wrapped type.
      if (!isArrayLike(keyPath)) {
        throw new TypeError('Expected iterable or array-like: ' + keyPath);
      }
      iter = getIterator(Iterable(keyPath));
    }
    return iter;
  }

  createClass(Map, KeyedCollection);

    // @pragma Construction

    function Map(value) {
      return value === null || value === undefined ? emptyMap() :
        isMap(value) ? value :
        emptyMap().withMutations(function(map ) {
          var iter = KeyedIterable(value);
          assertNotInfinite(iter.size);
          iter.forEach(function(v, k)  {return map.set(k, v)});
        });
    }

    Map.prototype.toString = function() {
      return this.__toString('Map {', '}');
    };

    // @pragma Access

    Map.prototype.get = function(k, notSetValue) {
      return this._root ?
        this._root.get(0, undefined, k, notSetValue) :
        notSetValue;
    };

    // @pragma Modification

    Map.prototype.set = function(k, v) {
      return updateMap(this, k, v);
    };

    Map.prototype.setIn = function(keyPath, v) {
      return this.updateIn(keyPath, NOT_SET, function()  {return v});
    };

    Map.prototype.remove = function(k) {
      return updateMap(this, k, NOT_SET);
    };

    Map.prototype.deleteIn = function(keyPath) {
      return this.updateIn(keyPath, function()  {return NOT_SET});
    };

    Map.prototype.update = function(k, notSetValue, updater) {
      return arguments.length === 1 ?
        k(this) :
        this.updateIn([k], notSetValue, updater);
    };

    Map.prototype.updateIn = function(keyPath, notSetValue, updater) {
      if (!updater) {
        updater = notSetValue;
        notSetValue = undefined;
      }
      var updatedValue = updateInDeepMap(
        this,
        forceIterator(keyPath),
        notSetValue,
        updater
      );
      return updatedValue === NOT_SET ? undefined : updatedValue;
    };

    Map.prototype.clear = function() {
      if (this.size === 0) {
        return this;
      }
      if (this.__ownerID) {
        this.size = 0;
        this._root = null;
        this.__hash = undefined;
        this.__altered = true;
        return this;
      }
      return emptyMap();
    };

    // @pragma Composition

    Map.prototype.merge = function(/*...iters*/) {
      return mergeIntoMapWith(this, undefined, arguments);
    };

    Map.prototype.mergeWith = function(merger) {var iters = SLICE$0.call(arguments, 1);
      return mergeIntoMapWith(this, merger, iters);
    };

    Map.prototype.mergeIn = function(keyPath) {var iters = SLICE$0.call(arguments, 1);
      return this.updateIn(keyPath, emptyMap(), function(m ) {return m.merge.apply(m, iters)});
    };

    Map.prototype.mergeDeep = function(/*...iters*/) {
      return mergeIntoMapWith(this, deepMerger(undefined), arguments);
    };

    Map.prototype.mergeDeepWith = function(merger) {var iters = SLICE$0.call(arguments, 1);
      return mergeIntoMapWith(this, deepMerger(merger), iters);
    };

    Map.prototype.mergeDeepIn = function(keyPath) {var iters = SLICE$0.call(arguments, 1);
      return this.updateIn(keyPath, emptyMap(), function(m ) {return m.mergeDeep.apply(m, iters)});
    };

    Map.prototype.sort = function(comparator) {
      // Late binding
      return OrderedMap(sortFactory(this, comparator));
    };

    Map.prototype.sortBy = function(mapper, comparator) {
      // Late binding
      return OrderedMap(sortFactory(this, comparator, mapper));
    };

    // @pragma Mutability

    Map.prototype.withMutations = function(fn) {
      var mutable = this.asMutable();
      fn(mutable);
      return mutable.wasAltered() ? mutable.__ensureOwner(this.__ownerID) : this;
    };

    Map.prototype.asMutable = function() {
      return this.__ownerID ? this : this.__ensureOwner(new OwnerID());
    };

    Map.prototype.asImmutable = function() {
      return this.__ensureOwner();
    };

    Map.prototype.wasAltered = function() {
      return this.__altered;
    };

    Map.prototype.__iterator = function(type, reverse) {
      return new MapIterator(this, type, reverse);
    };

    Map.prototype.__iterate = function(fn, reverse) {var this$0 = this;
      var iterations = 0;
      this._root && this._root.iterate(function(entry ) {
        iterations++;
        return fn(entry[1], entry[0], this$0);
      }, reverse);
      return iterations;
    };

    Map.prototype.__ensureOwner = function(ownerID) {
      if (ownerID === this.__ownerID) {
        return this;
      }
      if (!ownerID) {
        this.__ownerID = ownerID;
        this.__altered = false;
        return this;
      }
      return makeMap(this.size, this._root, ownerID, this.__hash);
    };


  function isMap(maybeMap) {
    return !!(maybeMap && maybeMap[IS_MAP_SENTINEL]);
  }

  Map.isMap = isMap;

  var IS_MAP_SENTINEL = '@@__IMMUTABLE_MAP__@@';

  var MapPrototype = Map.prototype;
  MapPrototype[IS_MAP_SENTINEL] = true;
  MapPrototype[DELETE] = MapPrototype.remove;
  MapPrototype.removeIn = MapPrototype.deleteIn;


  // #pragma Trie Nodes



    function ArrayMapNode(ownerID, entries) {
      this.ownerID = ownerID;
      this.entries = entries;
    }

    ArrayMapNode.prototype.get = function(shift, keyHash, key, notSetValue) {
      var entries = this.entries;
      for (var ii = 0, len = entries.length; ii < len; ii++) {
        if (is(key, entries[ii][0])) {
          return entries[ii][1];
        }
      }
      return notSetValue;
    };

    ArrayMapNode.prototype.update = function(ownerID, shift, keyHash, key, value, didChangeSize, didAlter) {
      var removed = value === NOT_SET;

      var entries = this.entries;
      var idx = 0;
      for (var len = entries.length; idx < len; idx++) {
        if (is(key, entries[idx][0])) {
          break;
        }
      }
      var exists = idx < len;

      if (exists ? entries[idx][1] === value : removed) {
        return this;
      }

      SetRef(didAlter);
      (removed || !exists) && SetRef(didChangeSize);

      if (removed && entries.length === 1) {
        return; // undefined
      }

      if (!exists && !removed && entries.length >= MAX_ARRAY_MAP_SIZE) {
        return createNodes(ownerID, entries, key, value);
      }

      var isEditable = ownerID && ownerID === this.ownerID;
      var newEntries = isEditable ? entries : arrCopy(entries);

      if (exists) {
        if (removed) {
          idx === len - 1 ? newEntries.pop() : (newEntries[idx] = newEntries.pop());
        } else {
          newEntries[idx] = [key, value];
        }
      } else {
        newEntries.push([key, value]);
      }

      if (isEditable) {
        this.entries = newEntries;
        return this;
      }

      return new ArrayMapNode(ownerID, newEntries);
    };




    function BitmapIndexedNode(ownerID, bitmap, nodes) {
      this.ownerID = ownerID;
      this.bitmap = bitmap;
      this.nodes = nodes;
    }

    BitmapIndexedNode.prototype.get = function(shift, keyHash, key, notSetValue) {
      if (keyHash === undefined) {
        keyHash = hash(key);
      }
      var bit = (1 << ((shift === 0 ? keyHash : keyHash >>> shift) & MASK));
      var bitmap = this.bitmap;
      return (bitmap & bit) === 0 ? notSetValue :
        this.nodes[popCount(bitmap & (bit - 1))].get(shift + SHIFT, keyHash, key, notSetValue);
    };

    BitmapIndexedNode.prototype.update = function(ownerID, shift, keyHash, key, value, didChangeSize, didAlter) {
      if (keyHash === undefined) {
        keyHash = hash(key);
      }
      var keyHashFrag = (shift === 0 ? keyHash : keyHash >>> shift) & MASK;
      var bit = 1 << keyHashFrag;
      var bitmap = this.bitmap;
      var exists = (bitmap & bit) !== 0;

      if (!exists && value === NOT_SET) {
        return this;
      }

      var idx = popCount(bitmap & (bit - 1));
      var nodes = this.nodes;
      var node = exists ? nodes[idx] : undefined;
      var newNode = updateNode(node, ownerID, shift + SHIFT, keyHash, key, value, didChangeSize, didAlter);

      if (newNode === node) {
        return this;
      }

      if (!exists && newNode && nodes.length >= MAX_BITMAP_INDEXED_SIZE) {
        return expandNodes(ownerID, nodes, bitmap, keyHashFrag, newNode);
      }

      if (exists && !newNode && nodes.length === 2 && isLeafNode(nodes[idx ^ 1])) {
        return nodes[idx ^ 1];
      }

      if (exists && newNode && nodes.length === 1 && isLeafNode(newNode)) {
        return newNode;
      }

      var isEditable = ownerID && ownerID === this.ownerID;
      var newBitmap = exists ? newNode ? bitmap : bitmap ^ bit : bitmap | bit;
      var newNodes = exists ? newNode ?
        setIn(nodes, idx, newNode, isEditable) :
        spliceOut(nodes, idx, isEditable) :
        spliceIn(nodes, idx, newNode, isEditable);

      if (isEditable) {
        this.bitmap = newBitmap;
        this.nodes = newNodes;
        return this;
      }

      return new BitmapIndexedNode(ownerID, newBitmap, newNodes);
    };




    function HashArrayMapNode(ownerID, count, nodes) {
      this.ownerID = ownerID;
      this.count = count;
      this.nodes = nodes;
    }

    HashArrayMapNode.prototype.get = function(shift, keyHash, key, notSetValue) {
      if (keyHash === undefined) {
        keyHash = hash(key);
      }
      var idx = (shift === 0 ? keyHash : keyHash >>> shift) & MASK;
      var node = this.nodes[idx];
      return node ? node.get(shift + SHIFT, keyHash, key, notSetValue) : notSetValue;
    };

    HashArrayMapNode.prototype.update = function(ownerID, shift, keyHash, key, value, didChangeSize, didAlter) {
      if (keyHash === undefined) {
        keyHash = hash(key);
      }
      var idx = (shift === 0 ? keyHash : keyHash >>> shift) & MASK;
      var removed = value === NOT_SET;
      var nodes = this.nodes;
      var node = nodes[idx];

      if (removed && !node) {
        return this;
      }

      var newNode = updateNode(node, ownerID, shift + SHIFT, keyHash, key, value, didChangeSize, didAlter);
      if (newNode === node) {
        return this;
      }

      var newCount = this.count;
      if (!node) {
        newCount++;
      } else if (!newNode) {
        newCount--;
        if (newCount < MIN_HASH_ARRAY_MAP_SIZE) {
          return packNodes(ownerID, nodes, newCount, idx);
        }
      }

      var isEditable = ownerID && ownerID === this.ownerID;
      var newNodes = setIn(nodes, idx, newNode, isEditable);

      if (isEditable) {
        this.count = newCount;
        this.nodes = newNodes;
        return this;
      }

      return new HashArrayMapNode(ownerID, newCount, newNodes);
    };




    function HashCollisionNode(ownerID, keyHash, entries) {
      this.ownerID = ownerID;
      this.keyHash = keyHash;
      this.entries = entries;
    }

    HashCollisionNode.prototype.get = function(shift, keyHash, key, notSetValue) {
      var entries = this.entries;
      for (var ii = 0, len = entries.length; ii < len; ii++) {
        if (is(key, entries[ii][0])) {
          return entries[ii][1];
        }
      }
      return notSetValue;
    };

    HashCollisionNode.prototype.update = function(ownerID, shift, keyHash, key, value, didChangeSize, didAlter) {
      if (keyHash === undefined) {
        keyHash = hash(key);
      }

      var removed = value === NOT_SET;

      if (keyHash !== this.keyHash) {
        if (removed) {
          return this;
        }
        SetRef(didAlter);
        SetRef(didChangeSize);
        return mergeIntoNode(this, ownerID, shift, keyHash, [key, value]);
      }

      var entries = this.entries;
      var idx = 0;
      for (var len = entries.length; idx < len; idx++) {
        if (is(key, entries[idx][0])) {
          break;
        }
      }
      var exists = idx < len;

      if (exists ? entries[idx][1] === value : removed) {
        return this;
      }

      SetRef(didAlter);
      (removed || !exists) && SetRef(didChangeSize);

      if (removed && len === 2) {
        return new ValueNode(ownerID, this.keyHash, entries[idx ^ 1]);
      }

      var isEditable = ownerID && ownerID === this.ownerID;
      var newEntries = isEditable ? entries : arrCopy(entries);

      if (exists) {
        if (removed) {
          idx === len - 1 ? newEntries.pop() : (newEntries[idx] = newEntries.pop());
        } else {
          newEntries[idx] = [key, value];
        }
      } else {
        newEntries.push([key, value]);
      }

      if (isEditable) {
        this.entries = newEntries;
        return this;
      }

      return new HashCollisionNode(ownerID, this.keyHash, newEntries);
    };




    function ValueNode(ownerID, keyHash, entry) {
      this.ownerID = ownerID;
      this.keyHash = keyHash;
      this.entry = entry;
    }

    ValueNode.prototype.get = function(shift, keyHash, key, notSetValue) {
      return is(key, this.entry[0]) ? this.entry[1] : notSetValue;
    };

    ValueNode.prototype.update = function(ownerID, shift, keyHash, key, value, didChangeSize, didAlter) {
      var removed = value === NOT_SET;
      var keyMatch = is(key, this.entry[0]);
      if (keyMatch ? value === this.entry[1] : removed) {
        return this;
      }

      SetRef(didAlter);

      if (removed) {
        SetRef(didChangeSize);
        return; // undefined
      }

      if (keyMatch) {
        if (ownerID && ownerID === this.ownerID) {
          this.entry[1] = value;
          return this;
        }
        return new ValueNode(ownerID, this.keyHash, [key, value]);
      }

      SetRef(didChangeSize);
      return mergeIntoNode(this, ownerID, shift, hash(key), [key, value]);
    };



  // #pragma Iterators

  ArrayMapNode.prototype.iterate =
  HashCollisionNode.prototype.iterate = function (fn, reverse) {
    var entries = this.entries;
    for (var ii = 0, maxIndex = entries.length - 1; ii <= maxIndex; ii++) {
      if (fn(entries[reverse ? maxIndex - ii : ii]) === false) {
        return false;
      }
    }
  }

  BitmapIndexedNode.prototype.iterate =
  HashArrayMapNode.prototype.iterate = function (fn, reverse) {
    var nodes = this.nodes;
    for (var ii = 0, maxIndex = nodes.length - 1; ii <= maxIndex; ii++) {
      var node = nodes[reverse ? maxIndex - ii : ii];
      if (node && node.iterate(fn, reverse) === false) {
        return false;
      }
    }
  }

  ValueNode.prototype.iterate = function (fn, reverse) {
    return fn(this.entry);
  }

  createClass(MapIterator, Iterator);

    function MapIterator(map, type, reverse) {
      this._type = type;
      this._reverse = reverse;
      this._stack = map._root && mapIteratorFrame(map._root);
    }

    MapIterator.prototype.next = function() {
      var type = this._type;
      var stack = this._stack;
      while (stack) {
        var node = stack.node;
        var index = stack.index++;
        var maxIndex;
        if (node.entry) {
          if (index === 0) {
            return mapIteratorValue(type, node.entry);
          }
        } else if (node.entries) {
          maxIndex = node.entries.length - 1;
          if (index <= maxIndex) {
            return mapIteratorValue(type, node.entries[this._reverse ? maxIndex - index : index]);
          }
        } else {
          maxIndex = node.nodes.length - 1;
          if (index <= maxIndex) {
            var subNode = node.nodes[this._reverse ? maxIndex - index : index];
            if (subNode) {
              if (subNode.entry) {
                return mapIteratorValue(type, subNode.entry);
              }
              stack = this._stack = mapIteratorFrame(subNode, stack);
            }
            continue;
          }
        }
        stack = this._stack = this._stack.__prev;
      }
      return iteratorDone();
    };


  function mapIteratorValue(type, entry) {
    return iteratorValue(type, entry[0], entry[1]);
  }

  function mapIteratorFrame(node, prev) {
    return {
      node: node,
      index: 0,
      __prev: prev
    };
  }

  function makeMap(size, root, ownerID, hash) {
    var map = Object.create(MapPrototype);
    map.size = size;
    map._root = root;
    map.__ownerID = ownerID;
    map.__hash = hash;
    map.__altered = false;
    return map;
  }

  var EMPTY_MAP;
  function emptyMap() {
    return EMPTY_MAP || (EMPTY_MAP = makeMap(0));
  }

  function updateMap(map, k, v) {
    var newRoot;
    var newSize;
    if (!map._root) {
      if (v === NOT_SET) {
        return map;
      }
      newSize = 1;
      newRoot = new ArrayMapNode(map.__ownerID, [[k, v]]);
    } else {
      var didChangeSize = MakeRef(CHANGE_LENGTH);
      var didAlter = MakeRef(DID_ALTER);
      newRoot = updateNode(map._root, map.__ownerID, 0, undefined, k, v, didChangeSize, didAlter);
      if (!didAlter.value) {
        return map;
      }
      newSize = map.size + (didChangeSize.value ? v === NOT_SET ? -1 : 1 : 0);
    }
    if (map.__ownerID) {
      map.size = newSize;
      map._root = newRoot;
      map.__hash = undefined;
      map.__altered = true;
      return map;
    }
    return newRoot ? makeMap(newSize, newRoot) : emptyMap();
  }

  function updateNode(node, ownerID, shift, keyHash, key, value, didChangeSize, didAlter) {
    if (!node) {
      if (value === NOT_SET) {
        return node;
      }
      SetRef(didAlter);
      SetRef(didChangeSize);
      return new ValueNode(ownerID, keyHash, [key, value]);
    }
    return node.update(ownerID, shift, keyHash, key, value, didChangeSize, didAlter);
  }

  function isLeafNode(node) {
    return node.constructor === ValueNode || node.constructor === HashCollisionNode;
  }

  function mergeIntoNode(node, ownerID, shift, keyHash, entry) {
    if (node.keyHash === keyHash) {
      return new HashCollisionNode(ownerID, keyHash, [node.entry, entry]);
    }

    var idx1 = (shift === 0 ? node.keyHash : node.keyHash >>> shift) & MASK;
    var idx2 = (shift === 0 ? keyHash : keyHash >>> shift) & MASK;

    var newNode;
    var nodes = idx1 === idx2 ?
      [mergeIntoNode(node, ownerID, shift + SHIFT, keyHash, entry)] :
      ((newNode = new ValueNode(ownerID, keyHash, entry)), idx1 < idx2 ? [node, newNode] : [newNode, node]);

    return new BitmapIndexedNode(ownerID, (1 << idx1) | (1 << idx2), nodes);
  }

  function createNodes(ownerID, entries, key, value) {
    if (!ownerID) {
      ownerID = new OwnerID();
    }
    var node = new ValueNode(ownerID, hash(key), [key, value]);
    for (var ii = 0; ii < entries.length; ii++) {
      var entry = entries[ii];
      node = node.update(ownerID, 0, undefined, entry[0], entry[1]);
    }
    return node;
  }

  function packNodes(ownerID, nodes, count, excluding) {
    var bitmap = 0;
    var packedII = 0;
    var packedNodes = new Array(count);
    for (var ii = 0, bit = 1, len = nodes.length; ii < len; ii++, bit <<= 1) {
      var node = nodes[ii];
      if (node !== undefined && ii !== excluding) {
        bitmap |= bit;
        packedNodes[packedII++] = node;
      }
    }
    return new BitmapIndexedNode(ownerID, bitmap, packedNodes);
  }

  function expandNodes(ownerID, nodes, bitmap, including, node) {
    var count = 0;
    var expandedNodes = new Array(SIZE);
    for (var ii = 0; bitmap !== 0; ii++, bitmap >>>= 1) {
      expandedNodes[ii] = bitmap & 1 ? nodes[count++] : undefined;
    }
    expandedNodes[including] = node;
    return new HashArrayMapNode(ownerID, count + 1, expandedNodes);
  }

  function mergeIntoMapWith(map, merger, iterables) {
    var iters = [];
    for (var ii = 0; ii < iterables.length; ii++) {
      var value = iterables[ii];
      var iter = KeyedIterable(value);
      if (!isIterable(value)) {
        iter = iter.map(function(v ) {return fromJS(v)});
      }
      iters.push(iter);
    }
    return mergeIntoCollectionWith(map, merger, iters);
  }

  function deepMerger(merger) {
    return function(existing, value) 
      {return existing && existing.mergeDeepWith && isIterable(value) ?
        existing.mergeDeepWith(merger, value) :
        merger ? merger(existing, value) : value};
  }

  function mergeIntoCollectionWith(collection, merger, iters) {
    iters = iters.filter(function(x ) {return x.size !== 0});
    if (iters.length === 0) {
      return collection;
    }
    if (collection.size === 0 && iters.length === 1) {
      return collection.constructor(iters[0]);
    }
    return collection.withMutations(function(collection ) {
      var mergeIntoMap = merger ?
        function(value, key)  {
          collection.update(key, NOT_SET, function(existing )
            {return existing === NOT_SET ? value : merger(existing, value)}
          );
        } :
        function(value, key)  {
          collection.set(key, value);
        }
      for (var ii = 0; ii < iters.length; ii++) {
        iters[ii].forEach(mergeIntoMap);
      }
    });
  }

  function updateInDeepMap(existing, keyPathIter, notSetValue, updater) {
    var isNotSet = existing === NOT_SET;
    var step = keyPathIter.next();
    if (step.done) {
      var existingValue = isNotSet ? notSetValue : existing;
      var newValue = updater(existingValue);
      return newValue === existingValue ? existing : newValue;
    }
    invariant(
      isNotSet || (existing && existing.set),
      'invalid keyPath'
    );
    var key = step.value;
    var nextExisting = isNotSet ? NOT_SET : existing.get(key, NOT_SET);
    var nextUpdated = updateInDeepMap(
      nextExisting,
      keyPathIter,
      notSetValue,
      updater
    );
    return nextUpdated === nextExisting ? existing :
      nextUpdated === NOT_SET ? existing.remove(key) :
      (isNotSet ? emptyMap() : existing).set(key, nextUpdated);
  }

  function popCount(x) {
    x = x - ((x >> 1) & 0x55555555);
    x = (x & 0x33333333) + ((x >> 2) & 0x33333333);
    x = (x + (x >> 4)) & 0x0f0f0f0f;
    x = x + (x >> 8);
    x = x + (x >> 16);
    return x & 0x7f;
  }

  function setIn(array, idx, val, canEdit) {
    var newArray = canEdit ? array : arrCopy(array);
    newArray[idx] = val;
    return newArray;
  }

  function spliceIn(array, idx, val, canEdit) {
    var newLen = array.length + 1;
    if (canEdit && idx + 1 === newLen) {
      array[idx] = val;
      return array;
    }
    var newArray = new Array(newLen);
    var after = 0;
    for (var ii = 0; ii < newLen; ii++) {
      if (ii === idx) {
        newArray[ii] = val;
        after = -1;
      } else {
        newArray[ii] = array[ii + after];
      }
    }
    return newArray;
  }

  function spliceOut(array, idx, canEdit) {
    var newLen = array.length - 1;
    if (canEdit && idx === newLen) {
      array.pop();
      return array;
    }
    var newArray = new Array(newLen);
    var after = 0;
    for (var ii = 0; ii < newLen; ii++) {
      if (ii === idx) {
        after = 1;
      }
      newArray[ii] = array[ii + after];
    }
    return newArray;
  }

  var MAX_ARRAY_MAP_SIZE = SIZE / 4;
  var MAX_BITMAP_INDEXED_SIZE = SIZE / 2;
  var MIN_HASH_ARRAY_MAP_SIZE = SIZE / 4;

  createClass(List, IndexedCollection);

    // @pragma Construction

    function List(value) {
      var empty = emptyList();
      if (value === null || value === undefined) {
        return empty;
      }
      if (isList(value)) {
        return value;
      }
      var iter = IndexedIterable(value);
      var size = iter.size;
      if (size === 0) {
        return empty;
      }
      assertNotInfinite(size);
      if (size > 0 && size < SIZE) {
        return makeList(0, size, SHIFT, null, new VNode(iter.toArray()));
      }
      return empty.withMutations(function(list ) {
        list.setSize(size);
        iter.forEach(function(v, i)  {return list.set(i, v)});
      });
    }

    List.of = function(/*...values*/) {
      return this(arguments);
    };

    List.prototype.toString = function() {
      return this.__toString('List [', ']');
    };

    // @pragma Access

    List.prototype.get = function(index, notSetValue) {
      index = wrapIndex(this, index);
      if (index < 0 || index >= this.size) {
        return notSetValue;
      }
      index += this._origin;
      var node = listNodeFor(this, index);
      return node && node.array[index & MASK];
    };

    // @pragma Modification

    List.prototype.set = function(index, value) {
      return updateList(this, index, value);
    };

    List.prototype.remove = function(index) {
      return !this.has(index) ? this :
        index === 0 ? this.shift() :
        index === this.size - 1 ? this.pop() :
        this.splice(index, 1);
    };

    List.prototype.clear = function() {
      if (this.size === 0) {
        return this;
      }
      if (this.__ownerID) {
        this.size = this._origin = this._capacity = 0;
        this._level = SHIFT;
        this._root = this._tail = null;
        this.__hash = undefined;
        this.__altered = true;
        return this;
      }
      return emptyList();
    };

    List.prototype.push = function(/*...values*/) {
      var values = arguments;
      var oldSize = this.size;
      return this.withMutations(function(list ) {
        setListBounds(list, 0, oldSize + values.length);
        for (var ii = 0; ii < values.length; ii++) {
          list.set(oldSize + ii, values[ii]);
        }
      });
    };

    List.prototype.pop = function() {
      return setListBounds(this, 0, -1);
    };

    List.prototype.unshift = function(/*...values*/) {
      var values = arguments;
      return this.withMutations(function(list ) {
        setListBounds(list, -values.length);
        for (var ii = 0; ii < values.length; ii++) {
          list.set(ii, values[ii]);
        }
      });
    };

    List.prototype.shift = function() {
      return setListBounds(this, 1);
    };

    // @pragma Composition

    List.prototype.merge = function(/*...iters*/) {
      return mergeIntoListWith(this, undefined, arguments);
    };

    List.prototype.mergeWith = function(merger) {var iters = SLICE$0.call(arguments, 1);
      return mergeIntoListWith(this, merger, iters);
    };

    List.prototype.mergeDeep = function(/*...iters*/) {
      return mergeIntoListWith(this, deepMerger(undefined), arguments);
    };

    List.prototype.mergeDeepWith = function(merger) {var iters = SLICE$0.call(arguments, 1);
      return mergeIntoListWith(this, deepMerger(merger), iters);
    };

    List.prototype.setSize = function(size) {
      return setListBounds(this, 0, size);
    };

    // @pragma Iteration

    List.prototype.slice = function(begin, end) {
      var size = this.size;
      if (wholeSlice(begin, end, size)) {
        return this;
      }
      return setListBounds(
        this,
        resolveBegin(begin, size),
        resolveEnd(end, size)
      );
    };

    List.prototype.__iterator = function(type, reverse) {
      var index = 0;
      var values = iterateList(this, reverse);
      return new Iterator(function()  {
        var value = values();
        return value === DONE ?
          iteratorDone() :
          iteratorValue(type, index++, value);
      });
    };

    List.prototype.__iterate = function(fn, reverse) {
      var index = 0;
      var values = iterateList(this, reverse);
      var value;
      while ((value = values()) !== DONE) {
        if (fn(value, index++, this) === false) {
          break;
        }
      }
      return index;
    };

    List.prototype.__ensureOwner = function(ownerID) {
      if (ownerID === this.__ownerID) {
        return this;
      }
      if (!ownerID) {
        this.__ownerID = ownerID;
        return this;
      }
      return makeList(this._origin, this._capacity, this._level, this._root, this._tail, ownerID, this.__hash);
    };


  function isList(maybeList) {
    return !!(maybeList && maybeList[IS_LIST_SENTINEL]);
  }

  List.isList = isList;

  var IS_LIST_SENTINEL = '@@__IMMUTABLE_LIST__@@';

  var ListPrototype = List.prototype;
  ListPrototype[IS_LIST_SENTINEL] = true;
  ListPrototype[DELETE] = ListPrototype.remove;
  ListPrototype.setIn = MapPrototype.setIn;
  ListPrototype.deleteIn =
  ListPrototype.removeIn = MapPrototype.removeIn;
  ListPrototype.update = MapPrototype.update;
  ListPrototype.updateIn = MapPrototype.updateIn;
  ListPrototype.mergeIn = MapPrototype.mergeIn;
  ListPrototype.mergeDeepIn = MapPrototype.mergeDeepIn;
  ListPrototype.withMutations = MapPrototype.withMutations;
  ListPrototype.asMutable = MapPrototype.asMutable;
  ListPrototype.asImmutable = MapPrototype.asImmutable;
  ListPrototype.wasAltered = MapPrototype.wasAltered;



    function VNode(array, ownerID) {
      this.array = array;
      this.ownerID = ownerID;
    }

    // TODO: seems like these methods are very similar

    VNode.prototype.removeBefore = function(ownerID, level, index) {
      if (index === level ? 1 << level : 0 || this.array.length === 0) {
        return this;
      }
      var originIndex = (index >>> level) & MASK;
      if (originIndex >= this.array.length) {
        return new VNode([], ownerID);
      }
      var removingFirst = originIndex === 0;
      var newChild;
      if (level > 0) {
        var oldChild = this.array[originIndex];
        newChild = oldChild && oldChild.removeBefore(ownerID, level - SHIFT, index);
        if (newChild === oldChild && removingFirst) {
          return this;
        }
      }
      if (removingFirst && !newChild) {
        return this;
      }
      var editable = editableVNode(this, ownerID);
      if (!removingFirst) {
        for (var ii = 0; ii < originIndex; ii++) {
          editable.array[ii] = undefined;
        }
      }
      if (newChild) {
        editable.array[originIndex] = newChild;
      }
      return editable;
    };

    VNode.prototype.removeAfter = function(ownerID, level, index) {
      if (index === level ? 1 << level : 0 || this.array.length === 0) {
        return this;
      }
      var sizeIndex = ((index - 1) >>> level) & MASK;
      if (sizeIndex >= this.array.length) {
        return this;
      }
      var removingLast = sizeIndex === this.array.length - 1;
      var newChild;
      if (level > 0) {
        var oldChild = this.array[sizeIndex];
        newChild = oldChild && oldChild.removeAfter(ownerID, level - SHIFT, index);
        if (newChild === oldChild && removingLast) {
          return this;
        }
      }
      if (removingLast && !newChild) {
        return this;
      }
      var editable = editableVNode(this, ownerID);
      if (!removingLast) {
        editable.array.pop();
      }
      if (newChild) {
        editable.array[sizeIndex] = newChild;
      }
      return editable;
    };



  var DONE = {};

  function iterateList(list, reverse) {
    var left = list._origin;
    var right = list._capacity;
    var tailPos = getTailOffset(right);
    var tail = list._tail;

    return iterateNodeOrLeaf(list._root, list._level, 0);

    function iterateNodeOrLeaf(node, level, offset) {
      return level === 0 ?
        iterateLeaf(node, offset) :
        iterateNode(node, level, offset);
    }

    function iterateLeaf(node, offset) {
      var array = offset === tailPos ? tail && tail.array : node && node.array;
      var from = offset > left ? 0 : left - offset;
      var to = right - offset;
      if (to > SIZE) {
        to = SIZE;
      }
      return function()  {
        if (from === to) {
          return DONE;
        }
        var idx = reverse ? --to : from++;
        return array && array[idx];
      };
    }

    function iterateNode(node, level, offset) {
      var values;
      var array = node && node.array;
      var from = offset > left ? 0 : (left - offset) >> level;
      var to = ((right - offset) >> level) + 1;
      if (to > SIZE) {
        to = SIZE;
      }
      return function()  {
        do {
          if (values) {
            var value = values();
            if (value !== DONE) {
              return value;
            }
            values = null;
          }
          if (from === to) {
            return DONE;
          }
          var idx = reverse ? --to : from++;
          values = iterateNodeOrLeaf(
            array && array[idx], level - SHIFT, offset + (idx << level)
          );
        } while (true);
      };
    }
  }

  function makeList(origin, capacity, level, root, tail, ownerID, hash) {
    var list = Object.create(ListPrototype);
    list.size = capacity - origin;
    list._origin = origin;
    list._capacity = capacity;
    list._level = level;
    list._root = root;
    list._tail = tail;
    list.__ownerID = ownerID;
    list.__hash = hash;
    list.__altered = false;
    return list;
  }

  var EMPTY_LIST;
  function emptyList() {
    return EMPTY_LIST || (EMPTY_LIST = makeList(0, 0, SHIFT));
  }

  function updateList(list, index, value) {
    index = wrapIndex(list, index);

    if (index >= list.size || index < 0) {
      return list.withMutations(function(list ) {
        index < 0 ?
          setListBounds(list, index).set(0, value) :
          setListBounds(list, 0, index + 1).set(index, value)
      });
    }

    index += list._origin;

    var newTail = list._tail;
    var newRoot = list._root;
    var didAlter = MakeRef(DID_ALTER);
    if (index >= getTailOffset(list._capacity)) {
      newTail = updateVNode(newTail, list.__ownerID, 0, index, value, didAlter);
    } else {
      newRoot = updateVNode(newRoot, list.__ownerID, list._level, index, value, didAlter);
    }

    if (!didAlter.value) {
      return list;
    }

    if (list.__ownerID) {
      list._root = newRoot;
      list._tail = newTail;
      list.__hash = undefined;
      list.__altered = true;
      return list;
    }
    return makeList(list._origin, list._capacity, list._level, newRoot, newTail);
  }

  function updateVNode(node, ownerID, level, index, value, didAlter) {
    var idx = (index >>> level) & MASK;
    var nodeHas = node && idx < node.array.length;
    if (!nodeHas && value === undefined) {
      return node;
    }

    var newNode;

    if (level > 0) {
      var lowerNode = node && node.array[idx];
      var newLowerNode = updateVNode(lowerNode, ownerID, level - SHIFT, index, value, didAlter);
      if (newLowerNode === lowerNode) {
        return node;
      }
      newNode = editableVNode(node, ownerID);
      newNode.array[idx] = newLowerNode;
      return newNode;
    }

    if (nodeHas && node.array[idx] === value) {
      return node;
    }

    SetRef(didAlter);

    newNode = editableVNode(node, ownerID);
    if (value === undefined && idx === newNode.array.length - 1) {
      newNode.array.pop();
    } else {
      newNode.array[idx] = value;
    }
    return newNode;
  }

  function editableVNode(node, ownerID) {
    if (ownerID && node && ownerID === node.ownerID) {
      return node;
    }
    return new VNode(node ? node.array.slice() : [], ownerID);
  }

  function listNodeFor(list, rawIndex) {
    if (rawIndex >= getTailOffset(list._capacity)) {
      return list._tail;
    }
    if (rawIndex < 1 << (list._level + SHIFT)) {
      var node = list._root;
      var level = list._level;
      while (node && level > 0) {
        node = node.array[(rawIndex >>> level) & MASK];
        level -= SHIFT;
      }
      return node;
    }
  }

  function setListBounds(list, begin, end) {
    var owner = list.__ownerID || new OwnerID();
    var oldOrigin = list._origin;
    var oldCapacity = list._capacity;
    var newOrigin = oldOrigin + begin;
    var newCapacity = end === undefined ? oldCapacity : end < 0 ? oldCapacity + end : oldOrigin + end;
    if (newOrigin === oldOrigin && newCapacity === oldCapacity) {
      return list;
    }

    // If it's going to end after it starts, it's empty.
    if (newOrigin >= newCapacity) {
      return list.clear();
    }

    var newLevel = list._level;
    var newRoot = list._root;

    // New origin might require creating a higher root.
    var offsetShift = 0;
    while (newOrigin + offsetShift < 0) {
      newRoot = new VNode(newRoot && newRoot.array.length ? [undefined, newRoot] : [], owner);
      newLevel += SHIFT;
      offsetShift += 1 << newLevel;
    }
    if (offsetShift) {
      newOrigin += offsetShift;
      oldOrigin += offsetShift;
      newCapacity += offsetShift;
      oldCapacity += offsetShift;
    }

    var oldTailOffset = getTailOffset(oldCapacity);
    var newTailOffset = getTailOffset(newCapacity);

    // New size might require creating a higher root.
    while (newTailOffset >= 1 << (newLevel + SHIFT)) {
      newRoot = new VNode(newRoot && newRoot.array.length ? [newRoot] : [], owner);
      newLevel += SHIFT;
    }

    // Locate or create the new tail.
    var oldTail = list._tail;
    var newTail = newTailOffset < oldTailOffset ?
      listNodeFor(list, newCapacity - 1) :
      newTailOffset > oldTailOffset ? new VNode([], owner) : oldTail;

    // Merge Tail into tree.
    if (oldTail && newTailOffset > oldTailOffset && newOrigin < oldCapacity && oldTail.array.length) {
      newRoot = editableVNode(newRoot, owner);
      var node = newRoot;
      for (var level = newLevel; level > SHIFT; level -= SHIFT) {
        var idx = (oldTailOffset >>> level) & MASK;
        node = node.array[idx] = editableVNode(node.array[idx], owner);
      }
      node.array[(oldTailOffset >>> SHIFT) & MASK] = oldTail;
    }

    // If the size has been reduced, there's a chance the tail needs to be trimmed.
    if (newCapacity < oldCapacity) {
      newTail = newTail && newTail.removeAfter(owner, 0, newCapacity);
    }

    // If the new origin is within the tail, then we do not need a root.
    if (newOrigin >= newTailOffset) {
      newOrigin -= newTailOffset;
      newCapacity -= newTailOffset;
      newLevel = SHIFT;
      newRoot = null;
      newTail = newTail && newTail.removeBefore(owner, 0, newOrigin);

    // Otherwise, if the root has been trimmed, garbage collect.
    } else if (newOrigin > oldOrigin || newTailOffset < oldTailOffset) {
      offsetShift = 0;

      // Identify the new top root node of the subtree of the old root.
      while (newRoot) {
        var beginIndex = (newOrigin >>> newLevel) & MASK;
        if (beginIndex !== (newTailOffset >>> newLevel) & MASK) {
          break;
        }
        if (beginIndex) {
          offsetShift += (1 << newLevel) * beginIndex;
        }
        newLevel -= SHIFT;
        newRoot = newRoot.array[beginIndex];
      }

      // Trim the new sides of the new root.
      if (newRoot && newOrigin > oldOrigin) {
        newRoot = newRoot.removeBefore(owner, newLevel, newOrigin - offsetShift);
      }
      if (newRoot && newTailOffset < oldTailOffset) {
        newRoot = newRoot.removeAfter(owner, newLevel, newTailOffset - offsetShift);
      }
      if (offsetShift) {
        newOrigin -= offsetShift;
        newCapacity -= offsetShift;
      }
    }

    if (list.__ownerID) {
      list.size = newCapacity - newOrigin;
      list._origin = newOrigin;
      list._capacity = newCapacity;
      list._level = newLevel;
      list._root = newRoot;
      list._tail = newTail;
      list.__hash = undefined;
      list.__altered = true;
      return list;
    }
    return makeList(newOrigin, newCapacity, newLevel, newRoot, newTail);
  }

  function mergeIntoListWith(list, merger, iterables) {
    var iters = [];
    var maxSize = 0;
    for (var ii = 0; ii < iterables.length; ii++) {
      var value = iterables[ii];
      var iter = IndexedIterable(value);
      if (iter.size > maxSize) {
        maxSize = iter.size;
      }
      if (!isIterable(value)) {
        iter = iter.map(function(v ) {return fromJS(v)});
      }
      iters.push(iter);
    }
    if (maxSize > list.size) {
      list = list.setSize(maxSize);
    }
    return mergeIntoCollectionWith(list, merger, iters);
  }

  function getTailOffset(size) {
    return size < SIZE ? 0 : (((size - 1) >>> SHIFT) << SHIFT);
  }

  createClass(OrderedMap, Map);

    // @pragma Construction

    function OrderedMap(value) {
      return value === null || value === undefined ? emptyOrderedMap() :
        isOrderedMap(value) ? value :
        emptyOrderedMap().withMutations(function(map ) {
          var iter = KeyedIterable(value);
          assertNotInfinite(iter.size);
          iter.forEach(function(v, k)  {return map.set(k, v)});
        });
    }

    OrderedMap.of = function(/*...values*/) {
      return this(arguments);
    };

    OrderedMap.prototype.toString = function() {
      return this.__toString('OrderedMap {', '}');
    };

    // @pragma Access

    OrderedMap.prototype.get = function(k, notSetValue) {
      var index = this._map.get(k);
      return index !== undefined ? this._list.get(index)[1] : notSetValue;
    };

    // @pragma Modification

    OrderedMap.prototype.clear = function() {
      if (this.size === 0) {
        return this;
      }
      if (this.__ownerID) {
        this.size = 0;
        this._map.clear();
        this._list.clear();
        return this;
      }
      return emptyOrderedMap();
    };

    OrderedMap.prototype.set = function(k, v) {
      return updateOrderedMap(this, k, v);
    };

    OrderedMap.prototype.remove = function(k) {
      return updateOrderedMap(this, k, NOT_SET);
    };

    OrderedMap.prototype.wasAltered = function() {
      return this._map.wasAltered() || this._list.wasAltered();
    };

    OrderedMap.prototype.__iterate = function(fn, reverse) {var this$0 = this;
      return this._list.__iterate(
        function(entry ) {return entry && fn(entry[1], entry[0], this$0)},
        reverse
      );
    };

    OrderedMap.prototype.__iterator = function(type, reverse) {
      return this._list.fromEntrySeq().__iterator(type, reverse);
    };

    OrderedMap.prototype.__ensureOwner = function(ownerID) {
      if (ownerID === this.__ownerID) {
        return this;
      }
      var newMap = this._map.__ensureOwner(ownerID);
      var newList = this._list.__ensureOwner(ownerID);
      if (!ownerID) {
        this.__ownerID = ownerID;
        this._map = newMap;
        this._list = newList;
        return this;
      }
      return makeOrderedMap(newMap, newList, ownerID, this.__hash);
    };


  function isOrderedMap(maybeOrderedMap) {
    return isMap(maybeOrderedMap) && isOrdered(maybeOrderedMap);
  }

  OrderedMap.isOrderedMap = isOrderedMap;

  OrderedMap.prototype[IS_ORDERED_SENTINEL] = true;
  OrderedMap.prototype[DELETE] = OrderedMap.prototype.remove;



  function makeOrderedMap(map, list, ownerID, hash) {
    var omap = Object.create(OrderedMap.prototype);
    omap.size = map ? map.size : 0;
    omap._map = map;
    omap._list = list;
    omap.__ownerID = ownerID;
    omap.__hash = hash;
    return omap;
  }

  var EMPTY_ORDERED_MAP;
  function emptyOrderedMap() {
    return EMPTY_ORDERED_MAP || (EMPTY_ORDERED_MAP = makeOrderedMap(emptyMap(), emptyList()));
  }

  function updateOrderedMap(omap, k, v) {
    var map = omap._map;
    var list = omap._list;
    var i = map.get(k);
    var has = i !== undefined;
    var newMap;
    var newList;
    if (v === NOT_SET) { // removed
      if (!has) {
        return omap;
      }
      if (list.size >= SIZE && list.size >= map.size * 2) {
        newList = list.filter(function(entry, idx)  {return entry !== undefined && i !== idx});
        newMap = newList.toKeyedSeq().map(function(entry ) {return entry[0]}).flip().toMap();
        if (omap.__ownerID) {
          newMap.__ownerID = newList.__ownerID = omap.__ownerID;
        }
      } else {
        newMap = map.remove(k);
        newList = i === list.size - 1 ? list.pop() : list.set(i, undefined);
      }
    } else {
      if (has) {
        if (v === list.get(i)[1]) {
          return omap;
        }
        newMap = map;
        newList = list.set(i, [k, v]);
      } else {
        newMap = map.set(k, list.size);
        newList = list.set(list.size, [k, v]);
      }
    }
    if (omap.__ownerID) {
      omap.size = newMap.size;
      omap._map = newMap;
      omap._list = newList;
      omap.__hash = undefined;
      return omap;
    }
    return makeOrderedMap(newMap, newList);
  }

  createClass(Stack, IndexedCollection);

    // @pragma Construction

    function Stack(value) {
      return value === null || value === undefined ? emptyStack() :
        isStack(value) ? value :
        emptyStack().unshiftAll(value);
    }

    Stack.of = function(/*...values*/) {
      return this(arguments);
    };

    Stack.prototype.toString = function() {
      return this.__toString('Stack [', ']');
    };

    // @pragma Access

    Stack.prototype.get = function(index, notSetValue) {
      var head = this._head;
      while (head && index--) {
        head = head.next;
      }
      return head ? head.value : notSetValue;
    };

    Stack.prototype.peek = function() {
      return this._head && this._head.value;
    };

    // @pragma Modification

    Stack.prototype.push = function(/*...values*/) {
      if (arguments.length === 0) {
        return this;
      }
      var newSize = this.size + arguments.length;
      var head = this._head;
      for (var ii = arguments.length - 1; ii >= 0; ii--) {
        head = {
          value: arguments[ii],
          next: head
        };
      }
      if (this.__ownerID) {
        this.size = newSize;
        this._head = head;
        this.__hash = undefined;
        this.__altered = true;
        return this;
      }
      return makeStack(newSize, head);
    };

    Stack.prototype.pushAll = function(iter) {
      iter = IndexedIterable(iter);
      if (iter.size === 0) {
        return this;
      }
      assertNotInfinite(iter.size);
      var newSize = this.size;
      var head = this._head;
      iter.reverse().forEach(function(value ) {
        newSize++;
        head = {
          value: value,
          next: head
        };
      });
      if (this.__ownerID) {
        this.size = newSize;
        this._head = head;
        this.__hash = undefined;
        this.__altered = true;
        return this;
      }
      return makeStack(newSize, head);
    };

    Stack.prototype.pop = function() {
      return this.slice(1);
    };

    Stack.prototype.unshift = function(/*...values*/) {
      return this.push.apply(this, arguments);
    };

    Stack.prototype.unshiftAll = function(iter) {
      return this.pushAll(iter);
    };

    Stack.prototype.shift = function() {
      return this.pop.apply(this, arguments);
    };

    Stack.prototype.clear = function() {
      if (this.size === 0) {
        return this;
      }
      if (this.__ownerID) {
        this.size = 0;
        this._head = undefined;
        this.__hash = undefined;
        this.__altered = true;
        return this;
      }
      return emptyStack();
    };

    Stack.prototype.slice = function(begin, end) {
      if (wholeSlice(begin, end, this.size)) {
        return this;
      }
      var resolvedBegin = resolveBegin(begin, this.size);
      var resolvedEnd = resolveEnd(end, this.size);
      if (resolvedEnd !== this.size) {
        // super.slice(begin, end);
        return IndexedCollection.prototype.slice.call(this, begin, end);
      }
      var newSize = this.size - resolvedBegin;
      var head = this._head;
      while (resolvedBegin--) {
        head = head.next;
      }
      if (this.__ownerID) {
        this.size = newSize;
        this._head = head;
        this.__hash = undefined;
        this.__altered = true;
        return this;
      }
      return makeStack(newSize, head);
    };

    // @pragma Mutability

    Stack.prototype.__ensureOwner = function(ownerID) {
      if (ownerID === this.__ownerID) {
        return this;
      }
      if (!ownerID) {
        this.__ownerID = ownerID;
        this.__altered = false;
        return this;
      }
      return makeStack(this.size, this._head, ownerID, this.__hash);
    };

    // @pragma Iteration

    Stack.prototype.__iterate = function(fn, reverse) {
      if (reverse) {
        return this.toSeq().cacheResult.__iterate(fn, reverse);
      }
      var iterations = 0;
      var node = this._head;
      while (node) {
        if (fn(node.value, iterations++, this) === false) {
          break;
        }
        node = node.next;
      }
      return iterations;
    };

    Stack.prototype.__iterator = function(type, reverse) {
      if (reverse) {
        return this.toSeq().cacheResult().__iterator(type, reverse);
      }
      var iterations = 0;
      var node = this._head;
      return new Iterator(function()  {
        if (node) {
          var value = node.value;
          node = node.next;
          return iteratorValue(type, iterations++, value);
        }
        return iteratorDone();
      });
    };


  function isStack(maybeStack) {
    return !!(maybeStack && maybeStack[IS_STACK_SENTINEL]);
  }

  Stack.isStack = isStack;

  var IS_STACK_SENTINEL = '@@__IMMUTABLE_STACK__@@';

  var StackPrototype = Stack.prototype;
  StackPrototype[IS_STACK_SENTINEL] = true;
  StackPrototype.withMutations = MapPrototype.withMutations;
  StackPrototype.asMutable = MapPrototype.asMutable;
  StackPrototype.asImmutable = MapPrototype.asImmutable;
  StackPrototype.wasAltered = MapPrototype.wasAltered;


  function makeStack(size, head, ownerID, hash) {
    var map = Object.create(StackPrototype);
    map.size = size;
    map._head = head;
    map.__ownerID = ownerID;
    map.__hash = hash;
    map.__altered = false;
    return map;
  }

  var EMPTY_STACK;
  function emptyStack() {
    return EMPTY_STACK || (EMPTY_STACK = makeStack(0));
  }

  createClass(Set, SetCollection);

    // @pragma Construction

    function Set(value) {
      return value === null || value === undefined ? emptySet() :
        isSet(value) ? value :
        emptySet().withMutations(function(set ) {
          var iter = SetIterable(value);
          assertNotInfinite(iter.size);
          iter.forEach(function(v ) {return set.add(v)});
        });
    }

    Set.of = function(/*...values*/) {
      return this(arguments);
    };

    Set.fromKeys = function(value) {
      return this(KeyedIterable(value).keySeq());
    };

    Set.prototype.toString = function() {
      return this.__toString('Set {', '}');
    };

    // @pragma Access

    Set.prototype.has = function(value) {
      return this._map.has(value);
    };

    // @pragma Modification

    Set.prototype.add = function(value) {
      return updateSet(this, this._map.set(value, true));
    };

    Set.prototype.remove = function(value) {
      return updateSet(this, this._map.remove(value));
    };

    Set.prototype.clear = function() {
      return updateSet(this, this._map.clear());
    };

    // @pragma Composition

    Set.prototype.union = function() {var iters = SLICE$0.call(arguments, 0);
      iters = iters.filter(function(x ) {return x.size !== 0});
      if (iters.length === 0) {
        return this;
      }
      if (this.size === 0 && iters.length === 1) {
        return this.constructor(iters[0]);
      }
      return this.withMutations(function(set ) {
        for (var ii = 0; ii < iters.length; ii++) {
          SetIterable(iters[ii]).forEach(function(value ) {return set.add(value)});
        }
      });
    };

    Set.prototype.intersect = function() {var iters = SLICE$0.call(arguments, 0);
      if (iters.length === 0) {
        return this;
      }
      iters = iters.map(function(iter ) {return SetIterable(iter)});
      var originalSet = this;
      return this.withMutations(function(set ) {
        originalSet.forEach(function(value ) {
          if (!iters.every(function(iter ) {return iter.contains(value)})) {
            set.remove(value);
          }
        });
      });
    };

    Set.prototype.subtract = function() {var iters = SLICE$0.call(arguments, 0);
      if (iters.length === 0) {
        return this;
      }
      iters = iters.map(function(iter ) {return SetIterable(iter)});
      var originalSet = this;
      return this.withMutations(function(set ) {
        originalSet.forEach(function(value ) {
          if (iters.some(function(iter ) {return iter.contains(value)})) {
            set.remove(value);
          }
        });
      });
    };

    Set.prototype.merge = function() {
      return this.union.apply(this, arguments);
    };

    Set.prototype.mergeWith = function(merger) {var iters = SLICE$0.call(arguments, 1);
      return this.union.apply(this, iters);
    };

    Set.prototype.sort = function(comparator) {
      // Late binding
      return OrderedSet(sortFactory(this, comparator));
    };

    Set.prototype.sortBy = function(mapper, comparator) {
      // Late binding
      return OrderedSet(sortFactory(this, comparator, mapper));
    };

    Set.prototype.wasAltered = function() {
      return this._map.wasAltered();
    };

    Set.prototype.__iterate = function(fn, reverse) {var this$0 = this;
      return this._map.__iterate(function(_, k)  {return fn(k, k, this$0)}, reverse);
    };

    Set.prototype.__iterator = function(type, reverse) {
      return this._map.map(function(_, k)  {return k}).__iterator(type, reverse);
    };

    Set.prototype.__ensureOwner = function(ownerID) {
      if (ownerID === this.__ownerID) {
        return this;
      }
      var newMap = this._map.__ensureOwner(ownerID);
      if (!ownerID) {
        this.__ownerID = ownerID;
        this._map = newMap;
        return this;
      }
      return this.__make(newMap, ownerID);
    };


  function isSet(maybeSet) {
    return !!(maybeSet && maybeSet[IS_SET_SENTINEL]);
  }

  Set.isSet = isSet;

  var IS_SET_SENTINEL = '@@__IMMUTABLE_SET__@@';

  var SetPrototype = Set.prototype;
  SetPrototype[IS_SET_SENTINEL] = true;
  SetPrototype[DELETE] = SetPrototype.remove;
  SetPrototype.mergeDeep = SetPrototype.merge;
  SetPrototype.mergeDeepWith = SetPrototype.mergeWith;
  SetPrototype.withMutations = MapPrototype.withMutations;
  SetPrototype.asMutable = MapPrototype.asMutable;
  SetPrototype.asImmutable = MapPrototype.asImmutable;

  SetPrototype.__empty = emptySet;
  SetPrototype.__make = makeSet;

  function updateSet(set, newMap) {
    if (set.__ownerID) {
      set.size = newMap.size;
      set._map = newMap;
      return set;
    }
    return newMap === set._map ? set :
      newMap.size === 0 ? set.__empty() :
      set.__make(newMap);
  }

  function makeSet(map, ownerID) {
    var set = Object.create(SetPrototype);
    set.size = map ? map.size : 0;
    set._map = map;
    set.__ownerID = ownerID;
    return set;
  }

  var EMPTY_SET;
  function emptySet() {
    return EMPTY_SET || (EMPTY_SET = makeSet(emptyMap()));
  }

  createClass(OrderedSet, Set);

    // @pragma Construction

    function OrderedSet(value) {
      return value === null || value === undefined ? emptyOrderedSet() :
        isOrderedSet(value) ? value :
        emptyOrderedSet().withMutations(function(set ) {
          var iter = SetIterable(value);
          assertNotInfinite(iter.size);
          iter.forEach(function(v ) {return set.add(v)});
        });
    }

    OrderedSet.of = function(/*...values*/) {
      return this(arguments);
    };

    OrderedSet.fromKeys = function(value) {
      return this(KeyedIterable(value).keySeq());
    };

    OrderedSet.prototype.toString = function() {
      return this.__toString('OrderedSet {', '}');
    };


  function isOrderedSet(maybeOrderedSet) {
    return isSet(maybeOrderedSet) && isOrdered(maybeOrderedSet);
  }

  OrderedSet.isOrderedSet = isOrderedSet;

  var OrderedSetPrototype = OrderedSet.prototype;
  OrderedSetPrototype[IS_ORDERED_SENTINEL] = true;

  OrderedSetPrototype.__empty = emptyOrderedSet;
  OrderedSetPrototype.__make = makeOrderedSet;

  function makeOrderedSet(map, ownerID) {
    var set = Object.create(OrderedSetPrototype);
    set.size = map ? map.size : 0;
    set._map = map;
    set.__ownerID = ownerID;
    return set;
  }

  var EMPTY_ORDERED_SET;
  function emptyOrderedSet() {
    return EMPTY_ORDERED_SET || (EMPTY_ORDERED_SET = makeOrderedSet(emptyOrderedMap()));
  }

  createClass(Record, KeyedCollection);

    function Record(defaultValues, name) {
      var RecordType = function Record(values) {
        if (!(this instanceof RecordType)) {
          return new RecordType(values);
        }
        this._map = Map(values);
      };

      var keys = Object.keys(defaultValues);

      var RecordTypePrototype = RecordType.prototype = Object.create(RecordPrototype);
      RecordTypePrototype.constructor = RecordType;
      name && (RecordTypePrototype._name = name);
      RecordTypePrototype._defaultValues = defaultValues;
      RecordTypePrototype._keys = keys;
      RecordTypePrototype.size = keys.length;

      try {
        keys.forEach(function(key ) {
          Object.defineProperty(RecordType.prototype, key, {
            get: function() {
              return this.get(key);
            },
            set: function(value) {
              invariant(this.__ownerID, 'Cannot set on an immutable record.');
              this.set(key, value);
            }
          });
        });
      } catch (error) {
        // Object.defineProperty failed. Probably IE8.
      }

      return RecordType;
    }

    Record.prototype.toString = function() {
      return this.__toString(recordName(this) + ' {', '}');
    };

    // @pragma Access

    Record.prototype.has = function(k) {
      return this._defaultValues.hasOwnProperty(k);
    };

    Record.prototype.get = function(k, notSetValue) {
      if (!this.has(k)) {
        return notSetValue;
      }
      var defaultVal = this._defaultValues[k];
      return this._map ? this._map.get(k, defaultVal) : defaultVal;
    };

    // @pragma Modification

    Record.prototype.clear = function() {
      if (this.__ownerID) {
        this._map && this._map.clear();
        return this;
      }
      var SuperRecord = Object.getPrototypeOf(this).constructor;
      return SuperRecord._empty || (SuperRecord._empty = makeRecord(this, emptyMap()));
    };

    Record.prototype.set = function(k, v) {
      if (!this.has(k)) {
        throw new Error('Cannot set unknown key "' + k + '" on ' + recordName(this));
      }
      var newMap = this._map && this._map.set(k, v);
      if (this.__ownerID || newMap === this._map) {
        return this;
      }
      return makeRecord(this, newMap);
    };

    Record.prototype.remove = function(k) {
      if (!this.has(k)) {
        return this;
      }
      var newMap = this._map && this._map.remove(k);
      if (this.__ownerID || newMap === this._map) {
        return this;
      }
      return makeRecord(this, newMap);
    };

    Record.prototype.wasAltered = function() {
      return this._map.wasAltered();
    };

    Record.prototype.__iterator = function(type, reverse) {var this$0 = this;
      return KeyedIterable(this._defaultValues).map(function(_, k)  {return this$0.get(k)}).__iterator(type, reverse);
    };

    Record.prototype.__iterate = function(fn, reverse) {var this$0 = this;
      return KeyedIterable(this._defaultValues).map(function(_, k)  {return this$0.get(k)}).__iterate(fn, reverse);
    };

    Record.prototype.__ensureOwner = function(ownerID) {
      if (ownerID === this.__ownerID) {
        return this;
      }
      var newMap = this._map && this._map.__ensureOwner(ownerID);
      if (!ownerID) {
        this.__ownerID = ownerID;
        this._map = newMap;
        return this;
      }
      return makeRecord(this, newMap, ownerID);
    };


  var RecordPrototype = Record.prototype;
  RecordPrototype[DELETE] = RecordPrototype.remove;
  RecordPrototype.deleteIn =
  RecordPrototype.removeIn = MapPrototype.removeIn;
  RecordPrototype.merge = MapPrototype.merge;
  RecordPrototype.mergeWith = MapPrototype.mergeWith;
  RecordPrototype.mergeIn = MapPrototype.mergeIn;
  RecordPrototype.mergeDeep = MapPrototype.mergeDeep;
  RecordPrototype.mergeDeepWith = MapPrototype.mergeDeepWith;
  RecordPrototype.mergeDeepIn = MapPrototype.mergeDeepIn;
  RecordPrototype.setIn = MapPrototype.setIn;
  RecordPrototype.update = MapPrototype.update;
  RecordPrototype.updateIn = MapPrototype.updateIn;
  RecordPrototype.withMutations = MapPrototype.withMutations;
  RecordPrototype.asMutable = MapPrototype.asMutable;
  RecordPrototype.asImmutable = MapPrototype.asImmutable;


  function makeRecord(likeRecord, map, ownerID) {
    var record = Object.create(Object.getPrototypeOf(likeRecord));
    record._map = map;
    record.__ownerID = ownerID;
    return record;
  }

  function recordName(record) {
    return record._name || record.constructor.name;
  }

  function deepEqual(a, b) {
    if (a === b) {
      return true;
    }

    if (
      !isIterable(b) ||
      a.size !== undefined && b.size !== undefined && a.size !== b.size ||
      a.__hash !== undefined && b.__hash !== undefined && a.__hash !== b.__hash ||
      isKeyed(a) !== isKeyed(b) ||
      isIndexed(a) !== isIndexed(b) ||
      isOrdered(a) !== isOrdered(b)
    ) {
      return false;
    }

    if (a.size === 0 && b.size === 0) {
      return true;
    }

    var notAssociative = !isAssociative(a);

    if (isOrdered(a)) {
      var entries = a.entries();
      return b.every(function(v, k)  {
        var entry = entries.next().value;
        return entry && is(entry[1], v) && (notAssociative || is(entry[0], k));
      }) && entries.next().done;
    }

    var flipped = false;

    if (a.size === undefined) {
      if (b.size === undefined) {
        a.cacheResult();
      } else {
        flipped = true;
        var _ = a;
        a = b;
        b = _;
      }
    }

    var allEqual = true;
    var bSize = b.__iterate(function(v, k)  {
      if (notAssociative ? !a.has(v) :
          flipped ? !is(v, a.get(k, NOT_SET)) : !is(a.get(k, NOT_SET), v)) {
        allEqual = false;
        return false;
      }
    });

    return allEqual && a.size === bSize;
  }

  createClass(Range, IndexedSeq);

    function Range(start, end, step) {
      if (!(this instanceof Range)) {
        return new Range(start, end, step);
      }
      invariant(step !== 0, 'Cannot step a Range by 0');
      start = start || 0;
      if (end === undefined) {
        end = Infinity;
      }
      step = step === undefined ? 1 : Math.abs(step);
      if (end < start) {
        step = -step;
      }
      this._start = start;
      this._end = end;
      this._step = step;
      this.size = Math.max(0, Math.ceil((end - start) / step - 1) + 1);
      if (this.size === 0) {
        if (EMPTY_RANGE) {
          return EMPTY_RANGE;
        }
        EMPTY_RANGE = this;
      }
    }

    Range.prototype.toString = function() {
      if (this.size === 0) {
        return 'Range []';
      }
      return 'Range [ ' +
        this._start + '...' + this._end +
        (this._step > 1 ? ' by ' + this._step : '') +
      ' ]';
    };

    Range.prototype.get = function(index, notSetValue) {
      return this.has(index) ?
        this._start + wrapIndex(this, index) * this._step :
        notSetValue;
    };

    Range.prototype.contains = function(searchValue) {
      var possibleIndex = (searchValue - this._start) / this._step;
      return possibleIndex >= 0 &&
        possibleIndex < this.size &&
        possibleIndex === Math.floor(possibleIndex);
    };

    Range.prototype.slice = function(begin, end) {
      if (wholeSlice(begin, end, this.size)) {
        return this;
      }
      begin = resolveBegin(begin, this.size);
      end = resolveEnd(end, this.size);
      if (end <= begin) {
        return new Range(0, 0);
      }
      return new Range(this.get(begin, this._end), this.get(end, this._end), this._step);
    };

    Range.prototype.indexOf = function(searchValue) {
      var offsetValue = searchValue - this._start;
      if (offsetValue % this._step === 0) {
        var index = offsetValue / this._step;
        if (index >= 0 && index < this.size) {
          return index
        }
      }
      return -1;
    };

    Range.prototype.lastIndexOf = function(searchValue) {
      return this.indexOf(searchValue);
    };

    Range.prototype.__iterate = function(fn, reverse) {
      var maxIndex = this.size - 1;
      var step = this._step;
      var value = reverse ? this._start + maxIndex * step : this._start;
      for (var ii = 0; ii <= maxIndex; ii++) {
        if (fn(value, ii, this) === false) {
          return ii + 1;
        }
        value += reverse ? -step : step;
      }
      return ii;
    };

    Range.prototype.__iterator = function(type, reverse) {
      var maxIndex = this.size - 1;
      var step = this._step;
      var value = reverse ? this._start + maxIndex * step : this._start;
      var ii = 0;
      return new Iterator(function()  {
        var v = value;
        value += reverse ? -step : step;
        return ii > maxIndex ? iteratorDone() : iteratorValue(type, ii++, v);
      });
    };

    Range.prototype.equals = function(other) {
      return other instanceof Range ?
        this._start === other._start &&
        this._end === other._end &&
        this._step === other._step :
        deepEqual(this, other);
    };


  var EMPTY_RANGE;

  createClass(Repeat, IndexedSeq);

    function Repeat(value, times) {
      if (!(this instanceof Repeat)) {
        return new Repeat(value, times);
      }
      this._value = value;
      this.size = times === undefined ? Infinity : Math.max(0, times);
      if (this.size === 0) {
        if (EMPTY_REPEAT) {
          return EMPTY_REPEAT;
        }
        EMPTY_REPEAT = this;
      }
    }

    Repeat.prototype.toString = function() {
      if (this.size === 0) {
        return 'Repeat []';
      }
      return 'Repeat [ ' + this._value + ' ' + this.size + ' times ]';
    };

    Repeat.prototype.get = function(index, notSetValue) {
      return this.has(index) ? this._value : notSetValue;
    };

    Repeat.prototype.contains = function(searchValue) {
      return is(this._value, searchValue);
    };

    Repeat.prototype.slice = function(begin, end) {
      var size = this.size;
      return wholeSlice(begin, end, size) ? this :
        new Repeat(this._value, resolveEnd(end, size) - resolveBegin(begin, size));
    };

    Repeat.prototype.reverse = function() {
      return this;
    };

    Repeat.prototype.indexOf = function(searchValue) {
      if (is(this._value, searchValue)) {
        return 0;
      }
      return -1;
    };

    Repeat.prototype.lastIndexOf = function(searchValue) {
      if (is(this._value, searchValue)) {
        return this.size;
      }
      return -1;
    };

    Repeat.prototype.__iterate = function(fn, reverse) {
      for (var ii = 0; ii < this.size; ii++) {
        if (fn(this._value, ii, this) === false) {
          return ii + 1;
        }
      }
      return ii;
    };

    Repeat.prototype.__iterator = function(type, reverse) {var this$0 = this;
      var ii = 0;
      return new Iterator(function() 
        {return ii < this$0.size ? iteratorValue(type, ii++, this$0._value) : iteratorDone()}
      );
    };

    Repeat.prototype.equals = function(other) {
      return other instanceof Repeat ?
        is(this._value, other._value) :
        deepEqual(other);
    };


  var EMPTY_REPEAT;

  /**
   * Contributes additional methods to a constructor
   */
  function mixin(ctor, methods) {
    var keyCopier = function(key ) { ctor.prototype[key] = methods[key]; };
    Object.keys(methods).forEach(keyCopier);
    Object.getOwnPropertySymbols &&
      Object.getOwnPropertySymbols(methods).forEach(keyCopier);
    return ctor;
  }

  Iterable.Iterator = Iterator;

  mixin(Iterable, {

    // ### Conversion to other types

    toArray: function() {
      assertNotInfinite(this.size);
      var array = new Array(this.size || 0);
      this.valueSeq().__iterate(function(v, i)  { array[i] = v; });
      return array;
    },

    toIndexedSeq: function() {
      return new ToIndexedSequence(this);
    },

    toJS: function() {
      return this.toSeq().map(
        function(value ) {return value && typeof value.toJS === 'function' ? value.toJS() : value}
      ).__toJS();
    },

    toJSON: function() {
      return this.toSeq().map(
        function(value ) {return value && typeof value.toJSON === 'function' ? value.toJSON() : value}
      ).__toJS();
    },

    toKeyedSeq: function() {
      return new ToKeyedSequence(this, true);
    },

    toMap: function() {
      // Use Late Binding here to solve the circular dependency.
      return Map(this.toKeyedSeq());
    },

    toObject: function() {
      assertNotInfinite(this.size);
      var object = {};
      this.__iterate(function(v, k)  { object[k] = v; });
      return object;
    },

    toOrderedMap: function() {
      // Use Late Binding here to solve the circular dependency.
      return OrderedMap(this.toKeyedSeq());
    },

    toOrderedSet: function() {
      // Use Late Binding here to solve the circular dependency.
      return OrderedSet(isKeyed(this) ? this.valueSeq() : this);
    },

    toSet: function() {
      // Use Late Binding here to solve the circular dependency.
      return Set(isKeyed(this) ? this.valueSeq() : this);
    },

    toSetSeq: function() {
      return new ToSetSequence(this);
    },

    toSeq: function() {
      return isIndexed(this) ? this.toIndexedSeq() :
        isKeyed(this) ? this.toKeyedSeq() :
        this.toSetSeq();
    },

    toStack: function() {
      // Use Late Binding here to solve the circular dependency.
      return Stack(isKeyed(this) ? this.valueSeq() : this);
    },

    toList: function() {
      // Use Late Binding here to solve the circular dependency.
      return List(isKeyed(this) ? this.valueSeq() : this);
    },


    // ### Common JavaScript methods and properties

    toString: function() {
      return '[Iterable]';
    },

    __toString: function(head, tail) {
      if (this.size === 0) {
        return head + tail;
      }
      return head + ' ' + this.toSeq().map(this.__toStringMapper).join(', ') + ' ' + tail;
    },


    // ### ES6 Collection methods (ES6 Array and Map)

    concat: function() {var values = SLICE$0.call(arguments, 0);
      return reify(this, concatFactory(this, values));
    },

    contains: function(searchValue) {
      return this.some(function(value ) {return is(value, searchValue)});
    },

    entries: function() {
      return this.__iterator(ITERATE_ENTRIES);
    },

    every: function(predicate, context) {
      assertNotInfinite(this.size);
      var returnValue = true;
      this.__iterate(function(v, k, c)  {
        if (!predicate.call(context, v, k, c)) {
          returnValue = false;
          return false;
        }
      });
      return returnValue;
    },

    filter: function(predicate, context) {
      return reify(this, filterFactory(this, predicate, context, true));
    },

    find: function(predicate, context, notSetValue) {
      var entry = this.findEntry(predicate, context);
      return entry ? entry[1] : notSetValue;
    },

    findEntry: function(predicate, context) {
      var found;
      this.__iterate(function(v, k, c)  {
        if (predicate.call(context, v, k, c)) {
          found = [k, v];
          return false;
        }
      });
      return found;
    },

    findLastEntry: function(predicate, context) {
      return this.toSeq().reverse().findEntry(predicate, context);
    },

    forEach: function(sideEffect, context) {
      assertNotInfinite(this.size);
      return this.__iterate(context ? sideEffect.bind(context) : sideEffect);
    },

    join: function(separator) {
      assertNotInfinite(this.size);
      separator = separator !== undefined ? '' + separator : ',';
      var joined = '';
      var isFirst = true;
      this.__iterate(function(v ) {
        isFirst ? (isFirst = false) : (joined += separator);
        joined += v !== null && v !== undefined ? v : '';
      });
      return joined;
    },

    keys: function() {
      return this.__iterator(ITERATE_KEYS);
    },

    map: function(mapper, context) {
      return reify(this, mapFactory(this, mapper, context));
    },

    reduce: function(reducer, initialReduction, context) {
      assertNotInfinite(this.size);
      var reduction;
      var useFirst;
      if (arguments.length < 2) {
        useFirst = true;
      } else {
        reduction = initialReduction;
      }
      this.__iterate(function(v, k, c)  {
        if (useFirst) {
          useFirst = false;
          reduction = v;
        } else {
          reduction = reducer.call(context, reduction, v, k, c);
        }
      });
      return reduction;
    },

    reduceRight: function(reducer, initialReduction, context) {
      var reversed = this.toKeyedSeq().reverse();
      return reversed.reduce.apply(reversed, arguments);
    },

    reverse: function() {
      return reify(this, reverseFactory(this, true));
    },

    slice: function(begin, end) {
      return reify(this, sliceFactory(this, begin, end, true));
    },

    some: function(predicate, context) {
      return !this.every(not(predicate), context);
    },

    sort: function(comparator) {
      return reify(this, sortFactory(this, comparator));
    },

    values: function() {
      return this.__iterator(ITERATE_VALUES);
    },


    // ### More sequential methods

    butLast: function() {
      return this.slice(0, -1);
    },

    isEmpty: function() {
      return this.size !== undefined ? this.size === 0 : !this.some(function()  {return true});
    },

    count: function(predicate, context) {
      return ensureSize(
        predicate ? this.toSeq().filter(predicate, context) : this
      );
    },

    countBy: function(grouper, context) {
      return countByFactory(this, grouper, context);
    },

    equals: function(other) {
      return deepEqual(this, other);
    },

    entrySeq: function() {
      var iterable = this;
      if (iterable._cache) {
        // We cache as an entries array, so we can just return the cache!
        return new ArraySeq(iterable._cache);
      }
      var entriesSequence = iterable.toSeq().map(entryMapper).toIndexedSeq();
      entriesSequence.fromEntrySeq = function()  {return iterable.toSeq()};
      return entriesSequence;
    },

    filterNot: function(predicate, context) {
      return this.filter(not(predicate), context);
    },

    findLast: function(predicate, context, notSetValue) {
      return this.toKeyedSeq().reverse().find(predicate, context, notSetValue);
    },

    first: function() {
      return this.find(returnTrue);
    },

    flatMap: function(mapper, context) {
      return reify(this, flatMapFactory(this, mapper, context));
    },

    flatten: function(depth) {
      return reify(this, flattenFactory(this, depth, true));
    },

    fromEntrySeq: function() {
      return new FromEntriesSequence(this);
    },

    get: function(searchKey, notSetValue) {
      return this.find(function(_, key)  {return is(key, searchKey)}, undefined, notSetValue);
    },

    getIn: function(searchKeyPath, notSetValue) {
      var nested = this;
      // Note: in an ES6 environment, we would prefer:
      // for (var key of searchKeyPath) {
      var iter = forceIterator(searchKeyPath);
      var step;
      while (!(step = iter.next()).done) {
        var key = step.value;
        nested = nested && nested.get ? nested.get(key, NOT_SET) : NOT_SET;
        if (nested === NOT_SET) {
          return notSetValue;
        }
      }
      return nested;
    },

    groupBy: function(grouper, context) {
      return groupByFactory(this, grouper, context);
    },

    has: function(searchKey) {
      return this.get(searchKey, NOT_SET) !== NOT_SET;
    },

    hasIn: function(searchKeyPath) {
      return this.getIn(searchKeyPath, NOT_SET) !== NOT_SET;
    },

    isSubset: function(iter) {
      iter = typeof iter.contains === 'function' ? iter : Iterable(iter);
      return this.every(function(value ) {return iter.contains(value)});
    },

    isSuperset: function(iter) {
      return iter.isSubset(this);
    },

    keySeq: function() {
      return this.toSeq().map(keyMapper).toIndexedSeq();
    },

    last: function() {
      return this.toSeq().reverse().first();
    },

    max: function(comparator) {
      return maxFactory(this, comparator);
    },

    maxBy: function(mapper, comparator) {
      return maxFactory(this, comparator, mapper);
    },

    min: function(comparator) {
      return maxFactory(this, comparator ? neg(comparator) : defaultNegComparator);
    },

    minBy: function(mapper, comparator) {
      return maxFactory(this, comparator ? neg(comparator) : defaultNegComparator, mapper);
    },

    rest: function() {
      return this.slice(1);
    },

    skip: function(amount) {
      return this.slice(Math.max(0, amount));
    },

    skipLast: function(amount) {
      return reify(this, this.toSeq().reverse().skip(amount).reverse());
    },

    skipWhile: function(predicate, context) {
      return reify(this, skipWhileFactory(this, predicate, context, true));
    },

    skipUntil: function(predicate, context) {
      return this.skipWhile(not(predicate), context);
    },

    sortBy: function(mapper, comparator) {
      return reify(this, sortFactory(this, comparator, mapper));
    },

    take: function(amount) {
      return this.slice(0, Math.max(0, amount));
    },

    takeLast: function(amount) {
      return reify(this, this.toSeq().reverse().take(amount).reverse());
    },

    takeWhile: function(predicate, context) {
      return reify(this, takeWhileFactory(this, predicate, context));
    },

    takeUntil: function(predicate, context) {
      return this.takeWhile(not(predicate), context);
    },

    valueSeq: function() {
      return this.toIndexedSeq();
    },


    // ### Hashable Object

    hashCode: function() {
      return this.__hash || (this.__hash = hashIterable(this));
    },


    // ### Internal

    // abstract __iterate(fn, reverse)

    // abstract __iterator(type, reverse)
  });

  // var IS_ITERABLE_SENTINEL = '@@__IMMUTABLE_ITERABLE__@@';
  // var IS_KEYED_SENTINEL = '@@__IMMUTABLE_KEYED__@@';
  // var IS_INDEXED_SENTINEL = '@@__IMMUTABLE_INDEXED__@@';
  // var IS_ORDERED_SENTINEL = '@@__IMMUTABLE_ORDERED__@@';

  var IterablePrototype = Iterable.prototype;
  IterablePrototype[IS_ITERABLE_SENTINEL] = true;
  IterablePrototype[ITERATOR_SYMBOL] = IterablePrototype.values;
  IterablePrototype.__toJS = IterablePrototype.toArray;
  IterablePrototype.__toStringMapper = quoteString;
  IterablePrototype.inspect =
  IterablePrototype.toSource = function() { return this.toString(); };
  IterablePrototype.chain = IterablePrototype.flatMap;

  // Temporary warning about using length
  (function () {
    try {
      Object.defineProperty(IterablePrototype, 'length', {
        get: function () {
          if (!Iterable.noLengthWarning) {
            var stack;
            try {
              throw new Error();
            } catch (error) {
              stack = error.stack;
            }
            if (stack.indexOf('_wrapObject') === -1) {
              console && console.warn && console.warn(
                'iterable.length has been deprecated, '+
                'use iterable.size or iterable.count(). '+
                'This warning will become a silent error in a future version. ' +
                stack
              );
              return this.size;
            }
          }
        }
      });
    } catch (e) {}
  })();



  mixin(KeyedIterable, {

    // ### More sequential methods

    flip: function() {
      return reify(this, flipFactory(this));
    },

    findKey: function(predicate, context) {
      var entry = this.findEntry(predicate, context);
      return entry && entry[0];
    },

    findLastKey: function(predicate, context) {
      return this.toSeq().reverse().findKey(predicate, context);
    },

    keyOf: function(searchValue) {
      return this.findKey(function(value ) {return is(value, searchValue)});
    },

    lastKeyOf: function(searchValue) {
      return this.findLastKey(function(value ) {return is(value, searchValue)});
    },

    mapEntries: function(mapper, context) {var this$0 = this;
      var iterations = 0;
      return reify(this,
        this.toSeq().map(
          function(v, k)  {return mapper.call(context, [k, v], iterations++, this$0)}
        ).fromEntrySeq()
      );
    },

    mapKeys: function(mapper, context) {var this$0 = this;
      return reify(this,
        this.toSeq().flip().map(
          function(k, v)  {return mapper.call(context, k, v, this$0)}
        ).flip()
      );
    },

  });

  var KeyedIterablePrototype = KeyedIterable.prototype;
  KeyedIterablePrototype[IS_KEYED_SENTINEL] = true;
  KeyedIterablePrototype[ITERATOR_SYMBOL] = IterablePrototype.entries;
  KeyedIterablePrototype.__toJS = IterablePrototype.toObject;
  KeyedIterablePrototype.__toStringMapper = function(v, k)  {return k + ': ' + quoteString(v)};



  mixin(IndexedIterable, {

    // ### Conversion to other types

    toKeyedSeq: function() {
      return new ToKeyedSequence(this, false);
    },


    // ### ES6 Collection methods (ES6 Array and Map)

    filter: function(predicate, context) {
      return reify(this, filterFactory(this, predicate, context, false));
    },

    findIndex: function(predicate, context) {
      var entry = this.findEntry(predicate, context);
      return entry ? entry[0] : -1;
    },

    indexOf: function(searchValue) {
      var key = this.toKeyedSeq().keyOf(searchValue);
      return key === undefined ? -1 : key;
    },

    lastIndexOf: function(searchValue) {
      return this.toSeq().reverse().indexOf(searchValue);
    },

    reverse: function() {
      return reify(this, reverseFactory(this, false));
    },

    slice: function(begin, end) {
      return reify(this, sliceFactory(this, begin, end, false));
    },

    splice: function(index, removeNum /*, ...values*/) {
      var numArgs = arguments.length;
      removeNum = Math.max(removeNum | 0, 0);
      if (numArgs === 0 || (numArgs === 2 && !removeNum)) {
        return this;
      }
      index = resolveBegin(index, this.size);
      var spliced = this.slice(0, index);
      return reify(
        this,
        numArgs === 1 ?
          spliced :
          spliced.concat(arrCopy(arguments, 2), this.slice(index + removeNum))
      );
    },


    // ### More collection methods

    findLastIndex: function(predicate, context) {
      var key = this.toKeyedSeq().findLastKey(predicate, context);
      return key === undefined ? -1 : key;
    },

    first: function() {
      return this.get(0);
    },

    flatten: function(depth) {
      return reify(this, flattenFactory(this, depth, false));
    },

    get: function(index, notSetValue) {
      index = wrapIndex(this, index);
      return (index < 0 || (this.size === Infinity ||
          (this.size !== undefined && index > this.size))) ?
        notSetValue :
        this.find(function(_, key)  {return key === index}, undefined, notSetValue);
    },

    has: function(index) {
      index = wrapIndex(this, index);
      return index >= 0 && (this.size !== undefined ?
        this.size === Infinity || index < this.size :
        this.indexOf(index) !== -1
      );
    },

    interpose: function(separator) {
      return reify(this, interposeFactory(this, separator));
    },

    interleave: function(/*...iterables*/) {
      var iterables = [this].concat(arrCopy(arguments));
      var zipped = zipWithFactory(this.toSeq(), IndexedSeq.of, iterables);
      var interleaved = zipped.flatten(true);
      if (zipped.size) {
        interleaved.size = zipped.size * iterables.length;
      }
      return reify(this, interleaved);
    },

    last: function() {
      return this.get(-1);
    },

    skipWhile: function(predicate, context) {
      return reify(this, skipWhileFactory(this, predicate, context, false));
    },

    zip: function(/*, ...iterables */) {
      var iterables = [this].concat(arrCopy(arguments));
      return reify(this, zipWithFactory(this, defaultZipper, iterables));
    },

    zipWith: function(zipper/*, ...iterables */) {
      var iterables = arrCopy(arguments);
      iterables[0] = this;
      return reify(this, zipWithFactory(this, zipper, iterables));
    },

  });

  IndexedIterable.prototype[IS_INDEXED_SENTINEL] = true;
  IndexedIterable.prototype[IS_ORDERED_SENTINEL] = true;



  mixin(SetIterable, {

    // ### ES6 Collection methods (ES6 Array and Map)

    get: function(value, notSetValue) {
      return this.has(value) ? value : notSetValue;
    },

    contains: function(value) {
      return this.has(value);
    },


    // ### More sequential methods

    keySeq: function() {
      return this.valueSeq();
    },

  });

  SetIterable.prototype.has = IterablePrototype.contains;


  // Mixin subclasses

  mixin(KeyedSeq, KeyedIterable.prototype);
  mixin(IndexedSeq, IndexedIterable.prototype);
  mixin(SetSeq, SetIterable.prototype);

  mixin(KeyedCollection, KeyedIterable.prototype);
  mixin(IndexedCollection, IndexedIterable.prototype);
  mixin(SetCollection, SetIterable.prototype);


  // #pragma Helper functions

  function keyMapper(v, k) {
    return k;
  }

  function entryMapper(v, k) {
    return [k, v];
  }

  function not(predicate) {
    return function() {
      return !predicate.apply(this, arguments);
    }
  }

  function neg(predicate) {
    return function() {
      return -predicate.apply(this, arguments);
    }
  }

  function quoteString(value) {
    return typeof value === 'string' ? JSON.stringify(value) : value;
  }

  function defaultZipper() {
    return arrCopy(arguments);
  }

  function defaultNegComparator(a, b) {
    return a < b ? 1 : a > b ? -1 : 0;
  }

  function hashIterable(iterable) {
    if (iterable.size === Infinity) {
      return 0;
    }
    var ordered = isOrdered(iterable);
    var keyed = isKeyed(iterable);
    var h = ordered ? 1 : 0;
    var size = iterable.__iterate(
      keyed ?
        ordered ?
          function(v, k)  { h = 31 * h + hashMerge(hash(v), hash(k)) | 0; } :
          function(v, k)  { h = h + hashMerge(hash(v), hash(k)) | 0; } :
        ordered ?
          function(v ) { h = 31 * h + hash(v) | 0; } :
          function(v ) { h = h + hash(v) | 0; }
    );
    return murmurHashOfSize(size, h);
  }

  function murmurHashOfSize(size, h) {
    h = Math__imul(h, 0xCC9E2D51);
    h = Math__imul(h << 15 | h >>> -15, 0x1B873593);
    h = Math__imul(h << 13 | h >>> -13, 5);
    h = (h + 0xE6546B64 | 0) ^ size;
    h = Math__imul(h ^ h >>> 16, 0x85EBCA6B);
    h = Math__imul(h ^ h >>> 13, 0xC2B2AE35);
    h = smi(h ^ h >>> 16);
    return h;
  }

  function hashMerge(a, b) {
    return a ^ b + 0x9E3779B9 + (a << 6) + (a >> 2) | 0; // int
  }

  var Immutable = {

    Iterable: Iterable,

    Seq: Seq,
    Collection: Collection,
    Map: Map,
    OrderedMap: OrderedMap,
    List: List,
    Stack: Stack,
    Set: Set,
    OrderedSet: OrderedSet,

    Record: Record,
    Range: Range,
    Repeat: Repeat,

    is: is,
    fromJS: fromJS,

  };

  return Immutable;

}));
},{}],55:[function(require,module,exports){
var baseFlatten = require('../internals/baseFlatten'), map = require('../collections/map');
function flatten(array, isShallow, callback, thisArg) {
    if (typeof isShallow != 'boolean' && isShallow != null) {
        thisArg = callback;
        callback = typeof isShallow != 'function' && thisArg && thisArg[isShallow] === array ? null : isShallow;
        isShallow = false;
    }
    if (callback != null) {
        array = map(array, callback, thisArg);
    }
    return baseFlatten(array, isShallow);
}
module.exports = flatten;
},{"../collections/map":59,"../internals/baseFlatten":68}],56:[function(require,module,exports){
var createCallback = require('../functions/createCallback'), slice = require('../internals/slice');
var undefined;
var nativeMax = Math.max;
function last(array, callback, thisArg) {
    var n = 0, length = array ? array.length : 0;
    if (typeof callback != 'number' && callback != null) {
        var index = length;
        callback = createCallback(callback, thisArg, 3);
        while (index-- && callback(array[index], index, array)) {
            n++;
        }
    } else {
        n = callback;
        if (n == null || thisArg) {
            return array ? array[length - 1] : undefined;
        }
    }
    return slice(array, nativeMax(0, length - n));
}
module.exports = last;
},{"../functions/createCallback":62,"../internals/slice":82}],57:[function(require,module,exports){
var arrayRef = [];
var splice = arrayRef.splice;
function pull(array) {
    var args = arguments, argsIndex = 0, argsLength = args.length, length = array ? array.length : 0;
    while (++argsIndex < argsLength) {
        var index = -1, value = args[argsIndex];
        while (++index < length) {
            if (array[index] === value) {
                splice.call(array, index--, 1);
                length--;
            }
        }
    }
    return array;
}
module.exports = pull;
},{}],58:[function(require,module,exports){
var baseIndexOf = require('../internals/baseIndexOf'), forOwn = require('../objects/forOwn'), isArray = require('../objects/isArray'), isString = require('../objects/isString');
var nativeMax = Math.max;
function contains(collection, target, fromIndex) {
    var index = -1, indexOf = baseIndexOf, length = collection ? collection.length : 0, result = false;
    fromIndex = (fromIndex < 0 ? nativeMax(0, length + fromIndex) : fromIndex) || 0;
    if (isArray(collection)) {
        result = indexOf(collection, target, fromIndex) > -1;
    } else if (typeof length == 'number') {
        result = (isString(collection) ? collection.indexOf(target, fromIndex) : indexOf(collection, target, fromIndex)) > -1;
    } else {
        forOwn(collection, function (value) {
            if (++index >= fromIndex) {
                return !(result = value === target);
            }
        });
    }
    return result;
}
module.exports = contains;
},{"../internals/baseIndexOf":69,"../objects/forOwn":86,"../objects/isArray":88,"../objects/isString":91}],59:[function(require,module,exports){
var createCallback = require('../functions/createCallback'), forOwn = require('../objects/forOwn');
function map(collection, callback, thisArg) {
    var index = -1, length = collection ? collection.length : 0;
    callback = createCallback(callback, thisArg, 3);
    if (typeof length == 'number') {
        var result = Array(length);
        while (++index < length) {
            result[index] = callback(collection[index], index, collection);
        }
    } else {
        result = [];
        forOwn(collection, function (value, key, collection) {
            result[++index] = callback(value, key, collection);
        });
    }
    return result;
}
module.exports = map;
},{"../functions/createCallback":62,"../objects/forOwn":86}],60:[function(require,module,exports){
var isString = require('../objects/isString'), slice = require('../internals/slice'), values = require('../objects/values');
function toArray(collection) {
    if (collection && typeof collection.length == 'number') {
        return slice(collection);
    }
    return values(collection);
}
module.exports = toArray;
},{"../internals/slice":82,"../objects/isString":91,"../objects/values":93}],61:[function(require,module,exports){
var createWrapper = require('../internals/createWrapper'), slice = require('../internals/slice');
function bind(func, thisArg) {
    return arguments.length > 2 ? createWrapper(func, 17, slice(arguments, 2), null, thisArg) : createWrapper(func, 1, null, null, thisArg);
}
module.exports = bind;
},{"../internals/createWrapper":71,"../internals/slice":82}],62:[function(require,module,exports){
var baseCreateCallback = require('../internals/baseCreateCallback'), baseIsEqual = require('../internals/baseIsEqual'), isObject = require('../objects/isObject'), keys = require('../objects/keys'), property = require('../utilities/property');
function createCallback(func, thisArg, argCount) {
    var type = typeof func;
    if (func == null || type == 'function') {
        return baseCreateCallback(func, thisArg, argCount);
    }
    if (type != 'object') {
        return property(func);
    }
    var props = keys(func), key = props[0], a = func[key];
    if (props.length == 1 && a === a && !isObject(a)) {
        return function (object) {
            var b = object[key];
            return a === b && (a !== 0 || 1 / a == 1 / b);
        };
    }
    return function (object) {
        var length = props.length, result = false;
        while (length--) {
            if (!(result = baseIsEqual(object[props[length]], func[props[length]], null, true))) {
                break;
            }
        }
        return result;
    };
}
module.exports = createCallback;
},{"../internals/baseCreateCallback":66,"../internals/baseIsEqual":70,"../objects/isObject":90,"../objects/keys":92,"../utilities/property":98}],63:[function(require,module,exports){
var arrayPool = [];
module.exports = arrayPool;
},{}],64:[function(require,module,exports){
var baseCreate = require('./baseCreate'), isObject = require('../objects/isObject'), setBindData = require('./setBindData'), slice = require('./slice');
var arrayRef = [];
var push = arrayRef.push;
function baseBind(bindData) {
    var func = bindData[0], partialArgs = bindData[2], thisArg = bindData[4];
    function bound() {
        if (partialArgs) {
            var args = slice(partialArgs);
            push.apply(args, arguments);
        }
        if (this instanceof bound) {
            var thisBinding = baseCreate(func.prototype), result = func.apply(thisBinding, args || arguments);
            return isObject(result) ? result : thisBinding;
        }
        return func.apply(thisArg, args || arguments);
    }
    setBindData(bound, bindData);
    return bound;
}
module.exports = baseBind;
},{"../objects/isObject":90,"./baseCreate":65,"./setBindData":80,"./slice":82}],65:[function(require,module,exports){
var isNative = require('./isNative'), isObject = require('../objects/isObject'), noop = require('../utilities/noop');
var nativeCreate = isNative(nativeCreate = Object.create) && nativeCreate;
function baseCreate(prototype, properties) {
    return isObject(prototype) ? nativeCreate(prototype) : {};
}
if (!nativeCreate) {
    baseCreate = function () {
        function Object() {
        }
        return function (prototype) {
            if (isObject(prototype)) {
                Object.prototype = prototype;
                var result = new Object();
                Object.prototype = null;
            }
            return result || window.Object();
        };
    }();
}
module.exports = baseCreate;
},{"../objects/isObject":90,"../utilities/noop":97,"./isNative":75}],66:[function(require,module,exports){
var bind = require('../functions/bind'), identity = require('../utilities/identity'), setBindData = require('./setBindData'), support = require('../support');
var reFuncName = /^\s*function[ \n\r\t]+\w/;
var reThis = /\bthis\b/;
var fnToString = Function.prototype.toString;
function baseCreateCallback(func, thisArg, argCount) {
    if (typeof func != 'function') {
        return identity;
    }
    if (typeof thisArg == 'undefined' || !('prototype' in func)) {
        return func;
    }
    var bindData = func.__bindData__;
    if (typeof bindData == 'undefined') {
        if (support.funcNames) {
            bindData = !func.name;
        }
        bindData = bindData || !support.funcDecomp;
        if (!bindData) {
            var source = fnToString.call(func);
            if (!support.funcNames) {
                bindData = !reFuncName.test(source);
            }
            if (!bindData) {
                bindData = reThis.test(source);
                setBindData(func, bindData);
            }
        }
    }
    if (bindData === false || bindData !== true && bindData[1] & 1) {
        return func;
    }
    switch (argCount) {
    case 1:
        return function (value) {
            return func.call(thisArg, value);
        };
    case 2:
        return function (a, b) {
            return func.call(thisArg, a, b);
        };
    case 3:
        return function (value, index, collection) {
            return func.call(thisArg, value, index, collection);
        };
    case 4:
        return function (accumulator, value, index, collection) {
            return func.call(thisArg, accumulator, value, index, collection);
        };
    }
    return bind(func, thisArg);
}
module.exports = baseCreateCallback;
},{"../functions/bind":61,"../support":94,"../utilities/identity":96,"./setBindData":80}],67:[function(require,module,exports){
var baseCreate = require('./baseCreate'), isObject = require('../objects/isObject'), setBindData = require('./setBindData'), slice = require('./slice');
var arrayRef = [];
var push = arrayRef.push;
function baseCreateWrapper(bindData) {
    var func = bindData[0], bitmask = bindData[1], partialArgs = bindData[2], partialRightArgs = bindData[3], thisArg = bindData[4], arity = bindData[5];
    var isBind = bitmask & 1, isBindKey = bitmask & 2, isCurry = bitmask & 4, isCurryBound = bitmask & 8, key = func;
    function bound() {
        var thisBinding = isBind ? thisArg : this;
        if (partialArgs) {
            var args = slice(partialArgs);
            push.apply(args, arguments);
        }
        if (partialRightArgs || isCurry) {
            args || (args = slice(arguments));
            if (partialRightArgs) {
                push.apply(args, partialRightArgs);
            }
            if (isCurry && args.length < arity) {
                bitmask |= 16 & ~32;
                return baseCreateWrapper([
                    func,
                    isCurryBound ? bitmask : bitmask & ~3,
                    args,
                    null,
                    thisArg,
                    arity
                ]);
            }
        }
        args || (args = arguments);
        if (isBindKey) {
            func = thisBinding[key];
        }
        if (this instanceof bound) {
            thisBinding = baseCreate(func.prototype);
            var result = func.apply(thisBinding, args);
            return isObject(result) ? result : thisBinding;
        }
        return func.apply(thisBinding, args);
    }
    setBindData(bound, bindData);
    return bound;
}
module.exports = baseCreateWrapper;
},{"../objects/isObject":90,"./baseCreate":65,"./setBindData":80,"./slice":82}],68:[function(require,module,exports){
var isArguments = require('../objects/isArguments'), isArray = require('../objects/isArray');
function baseFlatten(array, isShallow, isStrict, fromIndex) {
    var index = (fromIndex || 0) - 1, length = array ? array.length : 0, result = [];
    while (++index < length) {
        var value = array[index];
        if (value && typeof value == 'object' && typeof value.length == 'number' && (isArray(value) || isArguments(value))) {
            if (!isShallow) {
                value = baseFlatten(value, isShallow, isStrict);
            }
            var valIndex = -1, valLength = value.length, resIndex = result.length;
            result.length += valLength;
            while (++valIndex < valLength) {
                result[resIndex++] = value[valIndex];
            }
        } else if (!isStrict) {
            result.push(value);
        }
    }
    return result;
}
module.exports = baseFlatten;
},{"../objects/isArguments":87,"../objects/isArray":88}],69:[function(require,module,exports){
function baseIndexOf(array, value, fromIndex) {
    var index = (fromIndex || 0) - 1, length = array ? array.length : 0;
    while (++index < length) {
        if (array[index] === value) {
            return index;
        }
    }
    return -1;
}
module.exports = baseIndexOf;
},{}],70:[function(require,module,exports){
var forIn = require('../objects/forIn'), getArray = require('./getArray'), isFunction = require('../objects/isFunction'), objectTypes = require('./objectTypes'), releaseArray = require('./releaseArray');
var argsClass = '[object Arguments]', arrayClass = '[object Array]', boolClass = '[object Boolean]', dateClass = '[object Date]', numberClass = '[object Number]', objectClass = '[object Object]', regexpClass = '[object RegExp]', stringClass = '[object String]';
var objectProto = Object.prototype;
var toString = objectProto.toString;
var hasOwnProperty = objectProto.hasOwnProperty;
function baseIsEqual(a, b, callback, isWhere, stackA, stackB) {
    if (callback) {
        var result = callback(a, b);
        if (typeof result != 'undefined') {
            return !!result;
        }
    }
    if (a === b) {
        return a !== 0 || 1 / a == 1 / b;
    }
    var type = typeof a, otherType = typeof b;
    if (a === a && !(a && objectTypes[type]) && !(b && objectTypes[otherType])) {
        return false;
    }
    if (a == null || b == null) {
        return a === b;
    }
    var className = toString.call(a), otherClass = toString.call(b);
    if (className == argsClass) {
        className = objectClass;
    }
    if (otherClass == argsClass) {
        otherClass = objectClass;
    }
    if (className != otherClass) {
        return false;
    }
    switch (className) {
    case boolClass:
    case dateClass:
        return +a == +b;
    case numberClass:
        return a != +a ? b != +b : a == 0 ? 1 / a == 1 / b : a == +b;
    case regexpClass:
    case stringClass:
        return a == String(b);
    }
    var isArr = className == arrayClass;
    if (!isArr) {
        var aWrapped = hasOwnProperty.call(a, '__wrapped__'), bWrapped = hasOwnProperty.call(b, '__wrapped__');
        if (aWrapped || bWrapped) {
            return baseIsEqual(aWrapped ? a.__wrapped__ : a, bWrapped ? b.__wrapped__ : b, callback, isWhere, stackA, stackB);
        }
        if (className != objectClass) {
            return false;
        }
        var ctorA = a.constructor, ctorB = b.constructor;
        if (ctorA != ctorB && !(isFunction(ctorA) && ctorA instanceof ctorA && isFunction(ctorB) && ctorB instanceof ctorB) && ('constructor' in a && 'constructor' in b)) {
            return false;
        }
    }
    var initedStack = !stackA;
    stackA || (stackA = getArray());
    stackB || (stackB = getArray());
    var length = stackA.length;
    while (length--) {
        if (stackA[length] == a) {
            return stackB[length] == b;
        }
    }
    var size = 0;
    result = true;
    stackA.push(a);
    stackB.push(b);
    if (isArr) {
        length = a.length;
        size = b.length;
        result = size == length;
        if (result || isWhere) {
            while (size--) {
                var index = length, value = b[size];
                if (isWhere) {
                    while (index--) {
                        if (result = baseIsEqual(a[index], value, callback, isWhere, stackA, stackB)) {
                            break;
                        }
                    }
                } else if (!(result = baseIsEqual(a[size], value, callback, isWhere, stackA, stackB))) {
                    break;
                }
            }
        }
    } else {
        forIn(b, function (value, key, b) {
            if (hasOwnProperty.call(b, key)) {
                size++;
                return result = hasOwnProperty.call(a, key) && baseIsEqual(a[key], value, callback, isWhere, stackA, stackB);
            }
        });
        if (result && !isWhere) {
            forIn(a, function (value, key, a) {
                if (hasOwnProperty.call(a, key)) {
                    return result = --size > -1;
                }
            });
        }
    }
    stackA.pop();
    stackB.pop();
    if (initedStack) {
        releaseArray(stackA);
        releaseArray(stackB);
    }
    return result;
}
module.exports = baseIsEqual;
},{"../objects/forIn":85,"../objects/isFunction":89,"./getArray":73,"./objectTypes":77,"./releaseArray":79}],71:[function(require,module,exports){
var baseBind = require('./baseBind'), baseCreateWrapper = require('./baseCreateWrapper'), isFunction = require('../objects/isFunction'), slice = require('./slice');
var arrayRef = [];
var push = arrayRef.push, unshift = arrayRef.unshift;
function createWrapper(func, bitmask, partialArgs, partialRightArgs, thisArg, arity) {
    var isBind = bitmask & 1, isBindKey = bitmask & 2, isCurry = bitmask & 4, isCurryBound = bitmask & 8, isPartial = bitmask & 16, isPartialRight = bitmask & 32;
    if (!isBindKey && !isFunction(func)) {
        throw new TypeError();
    }
    if (isPartial && !partialArgs.length) {
        bitmask &= ~16;
        isPartial = partialArgs = false;
    }
    if (isPartialRight && !partialRightArgs.length) {
        bitmask &= ~32;
        isPartialRight = partialRightArgs = false;
    }
    var bindData = func && func.__bindData__;
    if (bindData && bindData !== true) {
        bindData = slice(bindData);
        if (bindData[2]) {
            bindData[2] = slice(bindData[2]);
        }
        if (bindData[3]) {
            bindData[3] = slice(bindData[3]);
        }
        if (isBind && !(bindData[1] & 1)) {
            bindData[4] = thisArg;
        }
        if (!isBind && bindData[1] & 1) {
            bitmask |= 8;
        }
        if (isCurry && !(bindData[1] & 4)) {
            bindData[5] = arity;
        }
        if (isPartial) {
            push.apply(bindData[2] || (bindData[2] = []), partialArgs);
        }
        if (isPartialRight) {
            unshift.apply(bindData[3] || (bindData[3] = []), partialRightArgs);
        }
        bindData[1] |= bitmask;
        return createWrapper.apply(null, bindData);
    }
    var creater = bitmask == 1 || bitmask === 17 ? baseBind : baseCreateWrapper;
    return creater([
        func,
        bitmask,
        partialArgs,
        partialRightArgs,
        thisArg,
        arity
    ]);
}
module.exports = createWrapper;
},{"../objects/isFunction":89,"./baseBind":64,"./baseCreateWrapper":67,"./slice":82}],72:[function(require,module,exports){
var htmlEscapes = require('./htmlEscapes');
function escapeHtmlChar(match) {
    return htmlEscapes[match];
}
module.exports = escapeHtmlChar;
},{"./htmlEscapes":74}],73:[function(require,module,exports){
var arrayPool = require('./arrayPool');
function getArray() {
    return arrayPool.pop() || [];
}
module.exports = getArray;
},{"./arrayPool":63}],74:[function(require,module,exports){
var htmlEscapes = {
        '&': '&amp;',
        '<': '&lt;',
        '>': '&gt;',
        '"': '&quot;',
        '\'': '&#39;'
    };
module.exports = htmlEscapes;
},{}],75:[function(require,module,exports){
var objectProto = Object.prototype;
var toString = objectProto.toString;
var reNative = RegExp('^' + String(toString).replace(/[.*+?^${}()|[\]\\]/g, '\\$&').replace(/toString| for [^\]]+/g, '.*?') + '$');
function isNative(value) {
    return typeof value == 'function' && reNative.test(value);
}
module.exports = isNative;
},{}],76:[function(require,module,exports){
var maxPoolSize = 40;
module.exports = maxPoolSize;
},{}],77:[function(require,module,exports){
var objectTypes = {
        'boolean': false,
        'function': true,
        'object': true,
        'number': false,
        'string': false,
        'undefined': false
    };
module.exports = objectTypes;
},{}],78:[function(require,module,exports){
var htmlEscapes = require('./htmlEscapes'), keys = require('../objects/keys');
var reUnescapedHtml = RegExp('[' + keys(htmlEscapes).join('') + ']', 'g');
module.exports = reUnescapedHtml;
},{"../objects/keys":92,"./htmlEscapes":74}],79:[function(require,module,exports){
var arrayPool = require('./arrayPool'), maxPoolSize = require('./maxPoolSize');
function releaseArray(array) {
    array.length = 0;
    if (arrayPool.length < maxPoolSize) {
        arrayPool.push(array);
    }
}
module.exports = releaseArray;
},{"./arrayPool":63,"./maxPoolSize":76}],80:[function(require,module,exports){
var isNative = require('./isNative'), noop = require('../utilities/noop');
var descriptor = {
        'configurable': false,
        'enumerable': false,
        'value': null,
        'writable': false
    };
var defineProperty = function () {
        try {
            var o = {}, func = isNative(func = Object.defineProperty) && func, result = func(o, o, o) && func;
        } catch (e) {
        }
        return result;
    }();
var setBindData = !defineProperty ? noop : function (func, value) {
        descriptor.value = value;
        defineProperty(func, '__bindData__', descriptor);
    };
module.exports = setBindData;
},{"../utilities/noop":97,"./isNative":75}],81:[function(require,module,exports){
var objectTypes = require('./objectTypes');
var objectProto = Object.prototype;
var hasOwnProperty = objectProto.hasOwnProperty;
var shimKeys = function (object) {
    var index, iterable = object, result = [];
    if (!iterable)
        return result;
    if (!objectTypes[typeof object])
        return result;
    for (index in iterable) {
        if (hasOwnProperty.call(iterable, index)) {
            result.push(index);
        }
    }
    return result;
};
module.exports = shimKeys;
},{"./objectTypes":77}],82:[function(require,module,exports){
function slice(array, start, end) {
    start || (start = 0);
    if (typeof end == 'undefined') {
        end = array ? array.length : 0;
    }
    var index = -1, length = end - start || 0, result = Array(length < 0 ? 0 : length);
    while (++index < length) {
        result[index] = array[start + index];
    }
    return result;
}
module.exports = slice;
},{}],83:[function(require,module,exports){
var baseCreateCallback = require('../internals/baseCreateCallback'), keys = require('./keys'), objectTypes = require('../internals/objectTypes');
var assign = function (object, source, guard) {
    var index, iterable = object, result = iterable;
    if (!iterable)
        return result;
    var args = arguments, argsIndex = 0, argsLength = typeof guard == 'number' ? 2 : args.length;
    if (argsLength > 3 && typeof args[argsLength - 2] == 'function') {
        var callback = baseCreateCallback(args[--argsLength - 1], args[argsLength--], 2);
    } else if (argsLength > 2 && typeof args[argsLength - 1] == 'function') {
        callback = args[--argsLength];
    }
    while (++argsIndex < argsLength) {
        iterable = args[argsIndex];
        if (iterable && objectTypes[typeof iterable]) {
            var ownIndex = -1, ownProps = objectTypes[typeof iterable] && keys(iterable), length = ownProps ? ownProps.length : 0;
            while (++ownIndex < length) {
                index = ownProps[ownIndex];
                result[index] = callback ? callback(result[index], iterable[index]) : iterable[index];
            }
        }
    }
    return result;
};
module.exports = assign;
},{"../internals/baseCreateCallback":66,"../internals/objectTypes":77,"./keys":92}],84:[function(require,module,exports){
var keys = require('./keys'), objectTypes = require('../internals/objectTypes');
var defaults = function (object, source, guard) {
    var index, iterable = object, result = iterable;
    if (!iterable)
        return result;
    var args = arguments, argsIndex = 0, argsLength = typeof guard == 'number' ? 2 : args.length;
    while (++argsIndex < argsLength) {
        iterable = args[argsIndex];
        if (iterable && objectTypes[typeof iterable]) {
            var ownIndex = -1, ownProps = objectTypes[typeof iterable] && keys(iterable), length = ownProps ? ownProps.length : 0;
            while (++ownIndex < length) {
                index = ownProps[ownIndex];
                if (typeof result[index] == 'undefined')
                    result[index] = iterable[index];
            }
        }
    }
    return result;
};
module.exports = defaults;
},{"../internals/objectTypes":77,"./keys":92}],85:[function(require,module,exports){
var baseCreateCallback = require('../internals/baseCreateCallback'), objectTypes = require('../internals/objectTypes');
var forIn = function (collection, callback, thisArg) {
    var index, iterable = collection, result = iterable;
    if (!iterable)
        return result;
    if (!objectTypes[typeof iterable])
        return result;
    callback = callback && typeof thisArg == 'undefined' ? callback : baseCreateCallback(callback, thisArg, 3);
    for (index in iterable) {
        if (callback(iterable[index], index, collection) === false)
            return result;
    }
    return result;
};
module.exports = forIn;
},{"../internals/baseCreateCallback":66,"../internals/objectTypes":77}],86:[function(require,module,exports){
var baseCreateCallback = require('../internals/baseCreateCallback'), keys = require('./keys'), objectTypes = require('../internals/objectTypes');
var forOwn = function (collection, callback, thisArg) {
    var index, iterable = collection, result = iterable;
    if (!iterable)
        return result;
    if (!objectTypes[typeof iterable])
        return result;
    callback = callback && typeof thisArg == 'undefined' ? callback : baseCreateCallback(callback, thisArg, 3);
    var ownIndex = -1, ownProps = objectTypes[typeof iterable] && keys(iterable), length = ownProps ? ownProps.length : 0;
    while (++ownIndex < length) {
        index = ownProps[ownIndex];
        if (callback(iterable[index], index, collection) === false)
            return result;
    }
    return result;
};
module.exports = forOwn;
},{"../internals/baseCreateCallback":66,"../internals/objectTypes":77,"./keys":92}],87:[function(require,module,exports){
var argsClass = '[object Arguments]';
var objectProto = Object.prototype;
var toString = objectProto.toString;
function isArguments(value) {
    return value && typeof value == 'object' && typeof value.length == 'number' && toString.call(value) == argsClass || false;
}
module.exports = isArguments;
},{}],88:[function(require,module,exports){
var isNative = require('../internals/isNative');
var arrayClass = '[object Array]';
var objectProto = Object.prototype;
var toString = objectProto.toString;
var nativeIsArray = isNative(nativeIsArray = Array.isArray) && nativeIsArray;
var isArray = nativeIsArray || function (value) {
        return value && typeof value == 'object' && typeof value.length == 'number' && toString.call(value) == arrayClass || false;
    };
module.exports = isArray;
},{"../internals/isNative":75}],89:[function(require,module,exports){
function isFunction(value) {
    return typeof value == 'function';
}
module.exports = isFunction;
},{}],90:[function(require,module,exports){
var objectTypes = require('../internals/objectTypes');
function isObject(value) {
    return !!(value && objectTypes[typeof value]);
}
module.exports = isObject;
},{"../internals/objectTypes":77}],91:[function(require,module,exports){
var stringClass = '[object String]';
var objectProto = Object.prototype;
var toString = objectProto.toString;
function isString(value) {
    return typeof value == 'string' || value && typeof value == 'object' && toString.call(value) == stringClass || false;
}
module.exports = isString;
},{}],92:[function(require,module,exports){
var isNative = require('../internals/isNative'), isObject = require('./isObject'), shimKeys = require('../internals/shimKeys');
var nativeKeys = isNative(nativeKeys = Object.keys) && nativeKeys;
var keys = !nativeKeys ? shimKeys : function (object) {
        if (!isObject(object)) {
            return [];
        }
        return nativeKeys(object);
    };
module.exports = keys;
},{"../internals/isNative":75,"../internals/shimKeys":81,"./isObject":90}],93:[function(require,module,exports){
var keys = require('./keys');
function values(object) {
    var index = -1, props = keys(object), length = props.length, result = Array(length);
    while (++index < length) {
        result[index] = object[props[index]];
    }
    return result;
}
module.exports = values;
},{"./keys":92}],94:[function(require,module,exports){
var isNative = require('./internals/isNative');
var reThis = /\bthis\b/;
var support = {};
support.funcDecomp = !isNative(window.WinRTError) && reThis.test(function () {
    return this;
});
support.funcNames = typeof Function.name == 'string';
module.exports = support;
},{"./internals/isNative":75}],95:[function(require,module,exports){
var escapeHtmlChar = require('../internals/escapeHtmlChar'), keys = require('../objects/keys'), reUnescapedHtml = require('../internals/reUnescapedHtml');
function escape(string) {
    return string == null ? '' : String(string).replace(reUnescapedHtml, escapeHtmlChar);
}
module.exports = escape;
},{"../internals/escapeHtmlChar":72,"../internals/reUnescapedHtml":78,"../objects/keys":92}],96:[function(require,module,exports){
function identity(value) {
    return value;
}
module.exports = identity;
},{}],97:[function(require,module,exports){
function noop() {
}
module.exports = noop;
},{}],98:[function(require,module,exports){
function property(key) {
    return function (object) {
        return object[key];
    };
}
module.exports = property;
},{}],99:[function(require,module,exports){
var buildCommandPatch = require('./api/command-patch'), buildCommand = require('./api/command'), Node = require('./api/node'), buildSelection = require('./api/selection'), buildSimpleCommand = require('./api/simple-command');
'use strict';
module.exports = function Api(scribe) {
    this.CommandPatch = buildCommandPatch(scribe);
    this.Command = buildCommand(scribe);
    this.Node = Node;
    this.Selection = buildSelection(scribe);
    this.SimpleCommand = buildSimpleCommand(this, scribe);
};
},{"./api/command":101,"./api/command-patch":100,"./api/node":102,"./api/selection":103,"./api/simple-command":104}],100:[function(require,module,exports){
'use strict';
module.exports = function (scribe) {
    function CommandPatch(commandName) {
        this.commandName = commandName;
    }
    CommandPatch.prototype.execute = function (value) {
        scribe.transactionManager.run(function () {
            document.execCommand(this.commandName, false, value || null);
        }.bind(this));
    };
    CommandPatch.prototype.queryState = function () {
        return document.queryCommandState(this.commandName);
    };
    CommandPatch.prototype.queryEnabled = function () {
        return document.queryCommandEnabled(this.commandName);
    };
    return CommandPatch;
};
},{}],101:[function(require,module,exports){
'use strict';
module.exports = function (scribe) {
    function Command(commandName) {
        this.commandName = commandName;
        this.patch = scribe.commandPatches[this.commandName];
    }
    Command.prototype.execute = function (value) {
        if (this.patch) {
            this.patch.execute(value);
        } else {
            scribe.transactionManager.run(function () {
                document.execCommand(this.commandName, false, value || null);
            }.bind(this));
        }
    };
    Command.prototype.queryState = function () {
        if (this.patch) {
            return this.patch.queryState();
        } else {
            return document.queryCommandState(this.commandName);
        }
    };
    Command.prototype.queryEnabled = function () {
        if (this.patch) {
            return this.patch.queryEnabled();
        } else {
            return document.queryCommandEnabled(this.commandName);
        }
    };
    return Command;
};
},{}],102:[function(require,module,exports){
'use strict';
function Node(node) {
    this.node = node;
}
Node.prototype.getAncestor = function (rootElement, nodeFilter) {
    var isTopContainerElement = function (element) {
        return rootElement === element;
    };
    if (isTopContainerElement(this.node)) {
        return;
    }
    var currentNode = this.node.parentNode;
    while (currentNode && !isTopContainerElement(currentNode)) {
        if (nodeFilter(currentNode)) {
            return currentNode;
        }
        currentNode = currentNode.parentNode;
    }
};
Node.prototype.nextAll = function () {
    var all = [];
    var el = this.node.nextSibling;
    while (el) {
        all.push(el);
        el = el.nextSibling;
    }
    return all;
};
module.exports = Node;
},{}],103:[function(require,module,exports){
var elementHelper = require('../element');
'use strict';
module.exports = function (scribe) {
    function Selection() {
        var rootDoc = document;
        var currentElement = scribe.el.parentNode;
        while (currentElement && currentElement.nodeType !== Node.DOCUMENT_FRAGMENT_NODE && currentElement.nodeType !== Node.DOCUMENT_NODE) {
            currentElement = currentElement.parentNode;
        }
        if (currentElement && currentElement.nodeType === Node.DOCUMENT_FRAGMENT_NODE && currentElement.getSelection) {
            rootDoc = currentElement;
        }
        this.selection = rootDoc.getSelection();
        if (this.selection.rangeCount) {
            this.range = document.createRange();
            var reverseRange = document.createRange();
            this.range.setStart(this.selection.anchorNode, this.selection.anchorOffset);
            reverseRange.setStart(this.selection.focusNode, this.selection.focusOffset);
            if (this.range.compareBoundaryPoints(Range.START_TO_START, reverseRange) <= 0) {
                this.range.setEnd(this.selection.focusNode, this.selection.focusOffset);
            } else {
                this.range = reverseRange;
                this.range.setEnd(this.selection.anchorNode, this.selection.anchorOffset);
            }
        }
    }
    Selection.prototype.getContaining = function (nodeFilter) {
        var range = this.range;
        if (!range) {
            return;
        }
        var node = new scribe.api.Node(this.range.commonAncestorContainer);
        var isTopContainerElement = node.node && scribe.el === node.node;
        return !isTopContainerElement && nodeFilter(node.node) ? node.node : node.getAncestor(scribe.el, nodeFilter);
    };
    Selection.prototype.placeMarkers = function () {
        var range = this.range;
        if (!range) {
            return;
        }
        if (!scribe.el.offsetParent) {
            return;
        }
        var scribeNodeRange = document.createRange();
        scribeNodeRange.selectNodeContents(scribe.el);
        var selectionStartWithinScribeElementStart = this.range.compareBoundaryPoints(Range.START_TO_START, scribeNodeRange) >= 0;
        var selectionEndWithinScribeElementEnd = this.range.compareBoundaryPoints(Range.END_TO_END, scribeNodeRange) <= 0;
        if (selectionStartWithinScribeElementStart && selectionEndWithinScribeElementEnd) {
            var startMarker = document.createElement('em');
            startMarker.classList.add('scribe-marker');
            var endMarker = document.createElement('em');
            endMarker.classList.add('scribe-marker');
            var rangeEnd = this.range.cloneRange();
            rangeEnd.collapse(false);
            rangeEnd.insertNode(endMarker);
            if (endMarker.nextSibling && endMarker.nextSibling.nodeType === Node.TEXT_NODE && endMarker.nextSibling.data === '') {
                endMarker.parentNode.removeChild(endMarker.nextSibling);
            }
            if (endMarker.previousSibling && endMarker.previousSibling.nodeType === Node.TEXT_NODE && endMarker.previousSibling.data === '') {
                endMarker.parentNode.removeChild(endMarker.previousSibling);
            }
            if (!this.range.collapsed) {
                var rangeStart = this.range.cloneRange();
                rangeStart.collapse(true);
                rangeStart.insertNode(startMarker);
                if (startMarker.nextSibling && startMarker.nextSibling.nodeType === Node.TEXT_NODE && startMarker.nextSibling.data === '') {
                    startMarker.parentNode.removeChild(startMarker.nextSibling);
                }
                if (startMarker.previousSibling && startMarker.previousSibling.nodeType === Node.TEXT_NODE && startMarker.previousSibling.data === '') {
                    startMarker.parentNode.removeChild(startMarker.previousSibling);
                }
            }
            this.selection.removeAllRanges();
            this.selection.addRange(this.range);
        }
    };
    Selection.prototype.getMarkers = function () {
        return scribe.el.querySelectorAll('em.scribe-marker');
    };
    Selection.prototype.removeMarkers = function () {
        var markers = this.getMarkers();
        Array.prototype.forEach.call(markers, function (marker) {
            marker.parentNode.removeChild(marker);
        });
    };
    Selection.prototype.selectMarkers = function (keepMarkers) {
        var markers = this.getMarkers();
        if (!markers.length) {
            return;
        }
        var newRange = document.createRange();
        newRange.setStartBefore(markers[0]);
        if (markers.length >= 2) {
            newRange.setEndAfter(markers[1]);
        } else {
            newRange.setEndAfter(markers[0]);
        }
        if (!keepMarkers) {
            this.removeMarkers();
        }
        this.selection.removeAllRanges();
        this.selection.addRange(newRange);
    };
    Selection.prototype.isCaretOnNewLine = function () {
        function isEmptyInlineElement(node) {
            var treeWalker = document.createTreeWalker(node, NodeFilter.SHOW_ELEMENT, null, false);
            var currentNode = treeWalker.root;
            while (currentNode) {
                var numberOfChildren = currentNode.childNodes.length;
                if (numberOfChildren > 1 || numberOfChildren === 1 && currentNode.textContent.trim() !== '')
                    return false;
                if (numberOfChildren === 0) {
                    return currentNode.textContent.trim() === '';
                }
                currentNode = treeWalker.nextNode();
            }
            ;
        }
        ;
        var containerPElement = this.getContaining(function (node) {
                return node.nodeName === 'P';
            });
        if (containerPElement) {
            return isEmptyInlineElement(containerPElement);
        } else {
            return false;
        }
    };
    return Selection;
};
},{"../element":106}],104:[function(require,module,exports){
'use strict';
module.exports = function (api, scribe) {
    function SimpleCommand(commandName, nodeName) {
        scribe.api.Command.call(this, commandName);
        this._nodeName = nodeName;
    }
    SimpleCommand.prototype = Object.create(api.Command.prototype);
    SimpleCommand.prototype.constructor = SimpleCommand;
    SimpleCommand.prototype.queryState = function () {
        var selection = new scribe.api.Selection();
        return scribe.api.Command.prototype.queryState.call(this) && !!selection.getContaining(function (node) {
            return node.nodeName === this._nodeName;
        }.bind(this));
    };
    return SimpleCommand;
};
},{}],105:[function(require,module,exports){
var flatten = require('lodash-amd/modern/arrays/flatten'), toArray = require('lodash-amd/modern/collections/toArray'), elementHelpers = require('./element'), nodeHelpers = require('./node');
function observeDomChanges(el, callback) {
    function includeRealMutations(mutations) {
        var allChangedNodes = flatten(mutations.map(function (mutation) {
                var added = toArray(mutation.addedNodes);
                var removed = toArray(mutation.removedNodes);
                return added.concat(removed);
            }));
        var realChangedNodes = allChangedNodes.filter(function (n) {
                return !nodeHelpers.isEmptyTextNode(n);
            }).filter(function (n) {
                return !elementHelpers.isSelectionMarkerNode(n);
            });
        return realChangedNodes.length > 0;
    }
    var MutationObserver = window.MutationObserver || window.WebKitMutationObserver || window.MozMutationObserver;
    var runningPostMutation = false;
    var observer = new MutationObserver(function (mutations) {
            if (!runningPostMutation && includeRealMutations(mutations)) {
                runningPostMutation = true;
                try {
                    callback();
                } catch (e) {
                    throw e;
                } finally {
                    setTimeout(function () {
                        runningPostMutation = false;
                    }, 0);
                }
            }
        });
    observer.observe(el, {
        attributes: true,
        childList: true,
        subtree: true
    });
    return observer;
}
module.exports = observeDomChanges;
},{"./element":106,"./node":108,"lodash-amd/modern/arrays/flatten":55,"lodash-amd/modern/collections/toArray":60}],106:[function(require,module,exports){
var contains = require('lodash-amd/modern/collections/contains');
'use strict';
var blockElementNames = [
        'ADDRESS',
        'ARTICLE',
        'ASIDE',
        'AUDIO',
        'BLOCKQUOTE',
        'CANVAS',
        'DD',
        'DIV',
        'FIELDSET',
        'FIGCAPTION',
        'FIGURE',
        'FOOTER',
        'FORM',
        'H1',
        'H2',
        'H3',
        'H4',
        'H5',
        'H6',
        'HEADER',
        'HGROUP',
        'HR',
        'LI',
        'NOSCRIPT',
        'OL',
        'OUTPUT',
        'P',
        'PRE',
        'SECTION',
        'TABLE',
        'TD',
        'TH',
        'TFOOT',
        'UL',
        'VIDEO'
    ];
function isBlockElement(node) {
    return contains(blockElementNames, node.nodeName);
}
function isSelectionMarkerNode(node) {
    return node.nodeType === Node.ELEMENT_NODE && node.className === 'scribe-marker';
}
function isCaretPositionNode(node) {
    return node.nodeType === Node.ELEMENT_NODE && node.className === 'caret-position';
}
function unwrap(node, childNode) {
    while (childNode.childNodes.length > 0) {
        node.insertBefore(childNode.childNodes[0], childNode);
    }
    node.removeChild(childNode);
}
module.exports = {
    isBlockElement: isBlockElement,
    isSelectionMarkerNode: isSelectionMarkerNode,
    isCaretPositionNode: isCaretPositionNode,
    unwrap: unwrap
};
},{"lodash-amd/modern/collections/contains":58}],107:[function(require,module,exports){
var pull = require('lodash-amd/modern/arrays/pull'), Immutable = require('immutable/dist/immutable');
'use strict';
function EventEmitter() {
    this._listeners = {};
}
EventEmitter.prototype.on = function (eventName, fn) {
    var listeners = this._listeners[eventName] || Immutable.Set();
    this._listeners[eventName] = listeners.add(fn);
};
EventEmitter.prototype.off = function (eventName, fn) {
    var listeners = this._listeners[eventName] || Immutable.Set();
    if (fn) {
        listeners = listeners.delete(fn);
    } else {
        listeners = listeners.clear();
    }
};
EventEmitter.prototype.trigger = function (eventName, args) {
    var events = eventName.split(':');
    while (!!events.length) {
        var currentEvent = events.join(':');
        var listeners = this._listeners[currentEvent] || Immutable.Set();
        listeners.forEach(function (listener) {
            listener.apply(null, args);
        });
        events.splice(events.length - 1, 1);
    }
};
module.exports = EventEmitter;
},{"immutable/dist/immutable":54,"lodash-amd/modern/arrays/pull":57}],108:[function(require,module,exports){
'use strict';
function isEmptyTextNode(node) {
    return node.nodeType === Node.TEXT_NODE && node.textContent === '';
}
function insertAfter(newNode, referenceNode) {
    return referenceNode.parentNode.insertBefore(newNode, referenceNode.nextSibling);
}
function removeNode(node) {
    return node.parentNode.removeChild(node);
}
module.exports = {
    isEmptyTextNode: isEmptyTextNode,
    insertAfter: insertAfter,
    removeNode: removeNode
};
},{}],109:[function(require,module,exports){
var indent = require('./commands/indent'), insertList = require('./commands/insert-list'), outdent = require('./commands/outdent'), redo = require('./commands/redo'), subscript = require('./commands/subscript'), superscript = require('./commands/superscript'), undo = require('./commands/undo');
'use strict';
module.exports = {
    indent: indent,
    insertList: insertList,
    outdent: outdent,
    redo: redo,
    subscript: subscript,
    superscript: superscript,
    undo: undo
};
},{"./commands/indent":110,"./commands/insert-list":111,"./commands/outdent":112,"./commands/redo":113,"./commands/subscript":114,"./commands/superscript":115,"./commands/undo":116}],110:[function(require,module,exports){
'use strict';
module.exports = function () {
    return function (scribe) {
        var indentCommand = new scribe.api.Command('indent');
        indentCommand.queryEnabled = function () {
            var selection = new scribe.api.Selection();
            var listElement = selection.getContaining(function (element) {
                    return element.nodeName === 'UL' || element.nodeName === 'OL';
                });
            return scribe.api.Command.prototype.queryEnabled.call(this) && scribe.allowsBlockElements() && !listElement;
        };
        scribe.commands.indent = indentCommand;
    };
};
},{}],111:[function(require,module,exports){
'use strict';
module.exports = function () {
    return function (scribe) {
        var InsertListCommand = function (commandName) {
            scribe.api.Command.call(this, commandName);
        };
        InsertListCommand.prototype = Object.create(scribe.api.Command.prototype);
        InsertListCommand.prototype.constructor = InsertListCommand;
        InsertListCommand.prototype.execute = function (value) {
            function splitList(listItemElements) {
                if (listItemElements.length > 0) {
                    var newListNode = document.createElement(listNode.nodeName);
                    listItemElements.forEach(function (listItemElement) {
                        newListNode.appendChild(listItemElement);
                    });
                    listNode.parentNode.insertBefore(newListNode, listNode.nextElementSibling);
                }
            }
            if (this.queryState()) {
                var selection = new scribe.api.Selection();
                var range = selection.range;
                var listNode = selection.getContaining(function (node) {
                        return node.nodeName === 'OL' || node.nodeName === 'UL';
                    });
                var listItemElement = selection.getContaining(function (node) {
                        return node.nodeName === 'LI';
                    });
                scribe.transactionManager.run(function () {
                    if (listItemElement) {
                        var nextListItemElements = new scribe.api.Node(listItemElement).nextAll();
                        splitList(nextListItemElements);
                        selection.placeMarkers();
                        var pNode = document.createElement('p');
                        pNode.innerHTML = listItemElement.innerHTML;
                        listNode.parentNode.insertBefore(pNode, listNode.nextElementSibling);
                        listItemElement.parentNode.removeChild(listItemElement);
                    } else {
                        var selectedListItemElements = Array.prototype.map.call(listNode.querySelectorAll('li'), function (listItemElement) {
                                return range.intersectsNode(listItemElement) && listItemElement;
                            }).filter(function (listItemElement) {
                                return listItemElement;
                            });
                        var lastSelectedListItemElement = selectedListItemElements.slice(-1)[0];
                        var listItemElementsAfterSelection = new scribe.api.Node(lastSelectedListItemElement).nextAll();
                        splitList(listItemElementsAfterSelection);
                        selection.placeMarkers();
                        var documentFragment = document.createDocumentFragment();
                        selectedListItemElements.forEach(function (listItemElement) {
                            var pElement = document.createElement('p');
                            pElement.innerHTML = listItemElement.innerHTML;
                            documentFragment.appendChild(pElement);
                        });
                        listNode.parentNode.insertBefore(documentFragment, listNode.nextElementSibling);
                        selectedListItemElements.forEach(function (listItemElement) {
                            listItemElement.parentNode.removeChild(listItemElement);
                        });
                    }
                    if (listNode.childNodes.length === 0) {
                        listNode.parentNode.removeChild(listNode);
                    }
                    selection.selectMarkers();
                }.bind(this));
            } else {
                scribe.api.Command.prototype.execute.call(this, value);
            }
        };
        InsertListCommand.prototype.queryEnabled = function () {
            return scribe.api.Command.prototype.queryEnabled.call(this) && scribe.allowsBlockElements();
        };
        scribe.commands.insertOrderedList = new InsertListCommand('insertOrderedList');
        scribe.commands.insertUnorderedList = new InsertListCommand('insertUnorderedList');
    };
};
},{}],112:[function(require,module,exports){
'use strict';
module.exports = function () {
    return function (scribe) {
        var outdentCommand = new scribe.api.Command('outdent');
        outdentCommand.queryEnabled = function () {
            var selection = new scribe.api.Selection();
            var listElement = selection.getContaining(function (element) {
                    return element.nodeName === 'UL' || element.nodeName === 'OL';
                });
            return scribe.api.Command.prototype.queryEnabled.call(this) && scribe.allowsBlockElements() && !listElement;
        };
        scribe.commands.outdent = outdentCommand;
    };
};
},{}],113:[function(require,module,exports){
'use strict';
module.exports = function () {
    return function (scribe) {
        var redoCommand = new scribe.api.Command('redo');
        redoCommand.execute = function () {
            var historyItem = scribe.undoManager.redo();
            if (typeof historyItem !== 'undefined') {
                scribe.restoreFromHistory(historyItem);
            }
        };
        redoCommand.queryEnabled = function () {
            return scribe.undoManager.position < scribe.undoManager.stack.length - 1;
        };
        scribe.commands.redo = redoCommand;
        if (scribe.options.undo.enabled) {
            scribe.el.addEventListener('keydown', function (event) {
                if (event.shiftKey && (event.metaKey || event.ctrlKey) && event.keyCode === 90) {
                    event.preventDefault();
                    redoCommand.execute();
                }
            });
        }
    };
};
},{}],114:[function(require,module,exports){
'use strict';
module.exports = function () {
    return function (scribe) {
        var subscriptCommand = new scribe.api.Command('subscript');
        scribe.commands.subscript = subscriptCommand;
    };
};
},{}],115:[function(require,module,exports){
'use strict';
module.exports = function () {
    return function (scribe) {
        var superscriptCommand = new scribe.api.Command('superscript');
        scribe.commands.superscript = superscriptCommand;
    };
};
},{}],116:[function(require,module,exports){
'use strict';
module.exports = function () {
    return function (scribe) {
        var undoCommand = new scribe.api.Command('undo');
        undoCommand.execute = function () {
            var historyItem = scribe.undoManager.undo();
            if (typeof historyItem !== 'undefined') {
                scribe.restoreFromHistory(historyItem);
            }
        };
        undoCommand.queryEnabled = function () {
            return scribe.undoManager.position > 1;
        };
        scribe.commands.undo = undoCommand;
        if (scribe.options.undo.enabled) {
            scribe.el.addEventListener('keydown', function (event) {
                if (!event.shiftKey && (event.metaKey || event.ctrlKey) && event.keyCode === 90) {
                    event.preventDefault();
                    undoCommand.execute();
                }
            });
        }
    };
};
},{}],117:[function(require,module,exports){
var contains = require('lodash-amd/modern/collections/contains'), observeDomChanges = require('../../dom-observer');
'use strict';
module.exports = function () {
    return function (scribe) {
        var pushHistoryOnFocus = function () {
                setTimeout(function () {
                    scribe.pushHistory();
                }.bind(scribe), 0);
                scribe.el.removeEventListener('focus', pushHistoryOnFocus);
            }.bind(scribe);
        scribe.el.addEventListener('focus', pushHistoryOnFocus);
        scribe.el.addEventListener('focus', function placeCaretOnFocus() {
            var selection = new scribe.api.Selection();
            if (selection.range) {
                var isFirefoxBug = scribe.allowsBlockElements() && selection.range.startContainer === scribe.el;
                if (isFirefoxBug) {
                    var focusElement = getFirstDeepestChild(scribe.el.firstChild);
                    var range = selection.range;
                    range.setStart(focusElement, 0);
                    range.setEnd(focusElement, 0);
                    selection.selection.removeAllRanges();
                    selection.selection.addRange(range);
                }
            }
            function getFirstDeepestChild(node) {
                var treeWalker = document.createTreeWalker(node, NodeFilter.SHOW_ALL, null, false);
                var previousNode = treeWalker.currentNode;
                if (treeWalker.firstChild()) {
                    if (treeWalker.currentNode.nodeName === 'BR') {
                        return previousNode;
                    } else {
                        return getFirstDeepestChild(treeWalker.currentNode);
                    }
                } else {
                    return treeWalker.currentNode;
                }
            }
        }.bind(scribe));
        var applyFormatters = function () {
                if (!scribe._skipFormatters) {
                    var selection = new scribe.api.Selection();
                    var isEditorActive = selection.range;
                    var runFormatters = function () {
                            if (isEditorActive) {
                                selection.placeMarkers();
                            }
                            scribe.setHTML(scribe._htmlFormatterFactory.format(scribe.getHTML()));
                            selection.selectMarkers();
                        }.bind(scribe);
                    if (isEditorActive) {
                        if (scribe.undoManager) {
                            scribe.undoManager.undo();
                        }
                        scribe.transactionManager.run(runFormatters);
                    } else {
                        runFormatters();
                    }
                }
                delete scribe._skipFormatters;
            }.bind(scribe);
        observeDomChanges(scribe.el, applyFormatters);
        if (scribe.allowsBlockElements()) {
            scribe.el.addEventListener('keydown', function (event) {
                if (event.keyCode === 13) {
                    var selection = new scribe.api.Selection();
                    var range = selection.range;
                    var headingNode = selection.getContaining(function (node) {
                            return /^(H[1-6])$/.test(node.nodeName);
                        });
                    if (headingNode && range.collapsed) {
                        var contentToEndRange = range.cloneRange();
                        contentToEndRange.setEndAfter(headingNode, 0);
                        var contentToEndFragment = contentToEndRange.cloneContents();
                        if (contentToEndFragment.firstChild.textContent === '') {
                            event.preventDefault();
                            scribe.transactionManager.run(function () {
                                var pNode = document.createElement('p');
                                var brNode = document.createElement('br');
                                pNode.appendChild(brNode);
                                headingNode.parentNode.insertBefore(pNode, headingNode.nextElementSibling);
                                range.setStart(pNode, 0);
                                range.setEnd(pNode, 0);
                                selection.selection.removeAllRanges();
                                selection.selection.addRange(range);
                            });
                        }
                    }
                }
            });
        }
        if (scribe.allowsBlockElements()) {
            scribe.el.addEventListener('keydown', function (event) {
                if (event.keyCode === 13 || event.keyCode === 8) {
                    var selection = new scribe.api.Selection();
                    var range = selection.range;
                    if (range.collapsed) {
                        var containerLIElement = selection.getContaining(function (node) {
                                return node.nodeName === 'LI';
                            });
                        if (containerLIElement && containerLIElement.textContent.trim() === '') {
                            event.preventDefault();
                            var listNode = selection.getContaining(function (node) {
                                    return node.nodeName === 'UL' || node.nodeName === 'OL';
                                });
                            var command = scribe.getCommand(listNode.nodeName === 'OL' ? 'insertOrderedList' : 'insertUnorderedList');
                            command.execute();
                        }
                    }
                }
            });
        }
        scribe.el.addEventListener('paste', function handlePaste(event) {
            if (event.clipboardData) {
                event.preventDefault();
                if (contains(event.clipboardData.types, 'text/html')) {
                    scribe.insertHTML(event.clipboardData.getData('text/html'));
                } else {
                    scribe.insertPlainText(event.clipboardData.getData('text/plain'));
                }
            } else {
                var selection = new scribe.api.Selection();
                selection.placeMarkers();
                var bin = document.createElement('div');
                document.body.appendChild(bin);
                bin.setAttribute('contenteditable', true);
                bin.focus();
                setTimeout(function () {
                    var data = bin.innerHTML;
                    bin.parentNode.removeChild(bin);
                    selection.selectMarkers();
                    scribe.el.focus();
                    scribe.insertHTML(data);
                }, 1);
            }
        });
    };
};
},{"../../dom-observer":105,"lodash-amd/modern/collections/contains":58}],118:[function(require,module,exports){
var last = require('lodash-amd/modern/arrays/last');
'use strict';
function wrapChildNodes(scribe, parentNode) {
    var groups = Array.prototype.reduce.call(parentNode.childNodes, function (accumulator, binChildNode) {
            var group = last(accumulator);
            if (!group) {
                startNewGroup();
            } else {
                var isBlockGroup = scribe.element.isBlockElement(group[0]);
                if (isBlockGroup === scribe.element.isBlockElement(binChildNode)) {
                    group.push(binChildNode);
                } else {
                    startNewGroup();
                }
            }
            return accumulator;
            function startNewGroup() {
                var newGroup = [binChildNode];
                accumulator.push(newGroup);
            }
        }, []);
    var consecutiveInlineElementsAndTextNodes = groups.filter(function (group) {
            var isBlockGroup = scribe.element.isBlockElement(group[0]);
            return !isBlockGroup;
        });
    consecutiveInlineElementsAndTextNodes.forEach(function (nodes) {
        var pElement = document.createElement('p');
        nodes[0].parentNode.insertBefore(pElement, nodes[0]);
        nodes.forEach(function (node) {
            pElement.appendChild(node);
        });
    });
    parentNode._isWrapped = true;
}
function traverse(scribe, parentNode) {
    var treeWalker = document.createTreeWalker(parentNode, NodeFilter.SHOW_ELEMENT, null, false);
    var node = treeWalker.firstChild();
    while (node) {
        if (node.nodeName === 'BLOCKQUOTE' && !node._isWrapped) {
            wrapChildNodes(scribe, node);
            traverse(scribe, parentNode);
            break;
        }
        node = treeWalker.nextSibling();
    }
}
module.exports = function () {
    return function (scribe) {
        scribe.registerHTMLFormatter('normalize', function (html) {
            var bin = document.createElement('div');
            bin.innerHTML = html;
            wrapChildNodes(scribe, bin);
            traverse(scribe, bin);
            return bin.innerHTML;
        });
    };
};
},{"lodash-amd/modern/arrays/last":56}],119:[function(require,module,exports){
var element = require('../../../../element'), contains = require('lodash-amd/modern/collections/contains');
'use strict';
var html5VoidElements = [
        'AREA',
        'BASE',
        'BR',
        'COL',
        'COMMAND',
        'EMBED',
        'HR',
        'IMG',
        'INPUT',
        'KEYGEN',
        'LINK',
        'META',
        'PARAM',
        'SOURCE',
        'TRACK',
        'WBR'
    ];
function parentHasNoTextContent(element, node) {
    if (element.isCaretPositionNode(node)) {
        return true;
    } else {
        return node.parentNode.textContent.trim() === '';
    }
}
function traverse(element, parentNode) {
    var node = parentNode.firstElementChild;
    function isEmpty(node) {
        if (node.children.length === 0 && element.isBlockElement(node) || node.children.length === 1 && element.isSelectionMarkerNode(node.children[0])) {
            return true;
        }
        if (!element.isBlockElement(node) && node.children.length === 0) {
            return parentHasNoTextContent(element, node);
        }
        return false;
    }
    while (node) {
        if (!element.isSelectionMarkerNode(node)) {
            if (isEmpty(node) && node.textContent.trim() === '' && !contains(html5VoidElements, node.nodeName)) {
                node.appendChild(document.createElement('br'));
            } else if (node.children.length > 0) {
                traverse(element, node);
            }
        }
        node = node.nextElementSibling;
    }
}
module.exports = function () {
    return function (scribe) {
        scribe.registerHTMLFormatter('normalize', function (html) {
            var bin = document.createElement('div');
            bin.innerHTML = html;
            traverse(scribe.element, bin);
            return bin.innerHTML;
        });
    };
};
},{"../../../../element":106,"lodash-amd/modern/collections/contains":58}],120:[function(require,module,exports){
'use strict';
module.exports = function () {
    return function (scribe) {
        var nbspCharRegExp = /(\s|&nbsp;)+/g;
        scribe.registerHTMLFormatter('export', function (html) {
            return html.replace(nbspCharRegExp, ' ');
        });
    };
};
},{}],121:[function(require,module,exports){
var escape = require('lodash-amd/modern/utilities/escape');
'use strict';
module.exports = function () {
    return function (scribe) {
        scribe.registerPlainTextFormatter(escape);
    };
};
},{"lodash-amd/modern/utilities/escape":95}],122:[function(require,module,exports){
'use strict';
function hasContent(rootNode) {
    var treeWalker = document.createTreeWalker(rootNode, NodeFilter.SHOW_ALL, null, false);
    while (treeWalker.nextNode()) {
        if (treeWalker.currentNode) {
            if (~['br'].indexOf(treeWalker.currentNode.nodeName.toLowerCase()) || treeWalker.currentNode.length > 0) {
                return true;
            }
        }
    }
    return false;
}
module.exports = function () {
    return function (scribe) {
        scribe.el.addEventListener('keydown', function (event) {
            if (event.keyCode === 13) {
                var selection = new scribe.api.Selection();
                var range = selection.range;
                var blockNode = selection.getContaining(function (node) {
                        return node.nodeName === 'LI' || /^(H[1-6])$/.test(node.nodeName);
                    });
                if (!blockNode) {
                    event.preventDefault();
                    scribe.transactionManager.run(function () {
                        if (scribe.el.lastChild.nodeName === 'BR') {
                            scribe.el.removeChild(scribe.el.lastChild);
                        }
                        var brNode = document.createElement('br');
                        range.insertNode(brNode);
                        range.collapse(false);
                        var contentToEndRange = range.cloneRange();
                        contentToEndRange.setEndAfter(scribe.el.lastChild, 0);
                        var contentToEndFragment = contentToEndRange.cloneContents();
                        if (!hasContent(contentToEndFragment)) {
                            var bogusBrNode = document.createElement('br');
                            range.insertNode(bogusBrNode);
                        }
                        var newRange = range.cloneRange();
                        newRange.setStartAfter(brNode, 0);
                        newRange.setEndAfter(brNode, 0);
                        selection.selection.removeAllRanges();
                        selection.selection.addRange(newRange);
                    });
                }
            }
        }.bind(this));
        if (scribe.getHTML().trim() === '') {
            scribe.setContent('');
        }
    };
};
},{}],123:[function(require,module,exports){
var boldCommand = require('./patches/commands/bold'), indentCommand = require('./patches/commands/indent'), insertHTMLCommand = require('./patches/commands/insert-html'), insertListCommands = require('./patches/commands/insert-list'), outdentCommand = require('./patches/commands/outdent'), createLinkCommand = require('./patches/commands/create-link'), events = require('./patches/events');
'use strict';
module.exports = {
    commands: {
        bold: boldCommand,
        indent: indentCommand,
        insertHTML: insertHTMLCommand,
        insertList: insertListCommands,
        outdent: outdentCommand,
        createLink: createLinkCommand
    },
    events: events
};
},{"./patches/commands/bold":124,"./patches/commands/create-link":125,"./patches/commands/indent":126,"./patches/commands/insert-html":127,"./patches/commands/insert-list":128,"./patches/commands/outdent":129,"./patches/events":130}],124:[function(require,module,exports){
'use strict';
module.exports = function () {
    return function (scribe) {
        var boldCommand = new scribe.api.CommandPatch('bold');
        boldCommand.queryEnabled = function () {
            var selection = new scribe.api.Selection();
            var headingNode = selection.getContaining(function (node) {
                    return /^(H[1-6])$/.test(node.nodeName);
                });
            return scribe.api.CommandPatch.prototype.queryEnabled.apply(this, arguments) && !headingNode;
        };
        scribe.commandPatches.bold = boldCommand;
    };
};
},{}],125:[function(require,module,exports){
'use strict';
module.exports = function () {
    return function (scribe) {
        var createLinkCommand = new scribe.api.CommandPatch('createLink');
        scribe.commandPatches.createLink = createLinkCommand;
        createLinkCommand.execute = function (value) {
            var selection = new scribe.api.Selection();
            if (selection.range.collapsed) {
                var aElement = document.createElement('a');
                aElement.setAttribute('href', value);
                aElement.textContent = value;
                selection.range.insertNode(aElement);
                var newRange = document.createRange();
                newRange.setStartBefore(aElement);
                newRange.setEndAfter(aElement);
                selection.selection.removeAllRanges();
                selection.selection.addRange(newRange);
            } else {
                scribe.api.CommandPatch.prototype.execute.call(this, value);
            }
        };
    };
};
},{}],126:[function(require,module,exports){
'use strict';
var INVISIBLE_CHAR = '\ufeff';
module.exports = function () {
    return function (scribe) {
        var indentCommand = new scribe.api.CommandPatch('indent');
        indentCommand.execute = function (value) {
            scribe.transactionManager.run(function () {
                var selection = new scribe.api.Selection();
                var range = selection.range;
                var isCaretOnNewLine = range.commonAncestorContainer.nodeName === 'P' && range.commonAncestorContainer.innerHTML === '<br>';
                if (isCaretOnNewLine) {
                    var textNode = document.createTextNode(INVISIBLE_CHAR);
                    range.insertNode(textNode);
                    range.setStart(textNode, 0);
                    range.setEnd(textNode, 0);
                    selection.selection.removeAllRanges();
                    selection.selection.addRange(range);
                }
                scribe.api.CommandPatch.prototype.execute.call(this, value);
                selection = new scribe.api.Selection();
                var blockquoteNode = selection.getContaining(function (node) {
                        return node.nodeName === 'BLOCKQUOTE';
                    });
                if (blockquoteNode) {
                    blockquoteNode.removeAttribute('style');
                }
            }.bind(this));
        };
        scribe.commandPatches.indent = indentCommand;
    };
};
},{}],127:[function(require,module,exports){
'use strict';
module.exports = function () {
    return function (scribe) {
        var insertHTMLCommandPatch = new scribe.api.CommandPatch('insertHTML');
        var element = scribe.element;
        insertHTMLCommandPatch.execute = function (value) {
            scribe.transactionManager.run(function () {
                scribe.api.CommandPatch.prototype.execute.call(this, value);
                sanitize(scribe.el);
                function sanitize(parentNode) {
                    var treeWalker = document.createTreeWalker(parentNode, NodeFilter.SHOW_ELEMENT, null, false);
                    var node = treeWalker.firstChild();
                    if (!node) {
                        return;
                    }
                    do {
                        if (node.nodeName === 'SPAN') {
                            element.unwrap(parentNode, node);
                        } else {
                            node.style.lineHeight = null;
                            if (node.getAttribute('style') === '') {
                                node.removeAttribute('style');
                            }
                        }
                        sanitize(node);
                    } while (node = treeWalker.nextSibling());
                }
            }.bind(this));
        };
        scribe.commandPatches.insertHTML = insertHTMLCommandPatch;
    };
};
},{}],128:[function(require,module,exports){
'use strict';
module.exports = function () {
    return function (scribe) {
        var element = scribe.element;
        var nodeHelpers = scribe.node;
        var InsertListCommandPatch = function (commandName) {
            scribe.api.CommandPatch.call(this, commandName);
        };
        InsertListCommandPatch.prototype = Object.create(scribe.api.CommandPatch.prototype);
        InsertListCommandPatch.prototype.constructor = InsertListCommandPatch;
        InsertListCommandPatch.prototype.execute = function (value) {
            scribe.transactionManager.run(function () {
                scribe.api.CommandPatch.prototype.execute.call(this, value);
                if (this.queryState()) {
                    var selection = new scribe.api.Selection();
                    var listElement = selection.getContaining(function (node) {
                            return node.nodeName === 'OL' || node.nodeName === 'UL';
                        });
                    if (listElement.nextElementSibling && listElement.nextElementSibling.childNodes.length === 0) {
                        nodeHelpers.removeNode(listElement.nextElementSibling);
                    }
                    if (listElement) {
                        var listParentNode = listElement.parentNode;
                        if (listParentNode && /^(H[1-6]|P)$/.test(listParentNode.nodeName)) {
                            selection.placeMarkers();
                            nodeHelpers.insertAfter(listElement, listParentNode);
                            selection.selectMarkers();
                            if (listParentNode.childNodes.length === 2 && nodeHelpers.isEmptyTextNode(listParentNode.firstChild)) {
                                nodeHelpers.removeNode(listParentNode);
                            }
                            if (listParentNode.childNodes.length === 0) {
                                nodeHelpers.removeNode(listParentNode);
                            }
                        }
                    }
                    var listItemElements = Array.prototype.slice.call(listElement.childNodes);
                    listItemElements.forEach(function (listItemElement) {
                        var listItemElementChildNodes = Array.prototype.slice.call(listItemElement.childNodes);
                        listItemElementChildNodes.forEach(function (listElementChildNode) {
                            if (listElementChildNode.nodeName === 'SPAN') {
                                var spanElement = listElementChildNode;
                                element.unwrap(listItemElement, spanElement);
                            } else if (listElementChildNode.nodeType === Node.ELEMENT_NODE) {
                                listElementChildNode.style.lineHeight = null;
                                if (listElementChildNode.getAttribute('style') === '') {
                                    listElementChildNode.removeAttribute('style');
                                }
                            }
                        });
                    });
                }
            }.bind(this));
        };
        scribe.commandPatches.insertOrderedList = new InsertListCommandPatch('insertOrderedList');
        scribe.commandPatches.insertUnorderedList = new InsertListCommandPatch('insertUnorderedList');
    };
};
},{}],129:[function(require,module,exports){
'use strict';
module.exports = function () {
    return function (scribe) {
        var outdentCommand = new scribe.api.CommandPatch('outdent');
        outdentCommand.execute = function () {
            scribe.transactionManager.run(function () {
                var selection = new scribe.api.Selection();
                var range = selection.range;
                var blockquoteNode = selection.getContaining(function (node) {
                        return node.nodeName === 'BLOCKQUOTE';
                    });
                if (range.commonAncestorContainer.nodeName === 'BLOCKQUOTE') {
                    selection.placeMarkers();
                    selection.selectMarkers(true);
                    var selectedNodes = range.cloneContents();
                    blockquoteNode.parentNode.insertBefore(selectedNodes, blockquoteNode);
                    range.deleteContents();
                    selection.selectMarkers();
                    if (blockquoteNode.textContent === '') {
                        blockquoteNode.parentNode.removeChild(blockquoteNode);
                    }
                } else {
                    var pNode = selection.getContaining(function (node) {
                            return node.nodeName === 'P';
                        });
                    if (pNode) {
                        var nextSiblingNodes = new scribe.api.Node(pNode).nextAll();
                        if (nextSiblingNodes.length) {
                            var newContainerNode = document.createElement(blockquoteNode.nodeName);
                            nextSiblingNodes.forEach(function (siblingNode) {
                                newContainerNode.appendChild(siblingNode);
                            });
                            blockquoteNode.parentNode.insertBefore(newContainerNode, blockquoteNode.nextElementSibling);
                        }
                        selection.placeMarkers();
                        blockquoteNode.parentNode.insertBefore(pNode, blockquoteNode.nextElementSibling);
                        selection.selectMarkers();
                        if (blockquoteNode.innerHTML === '') {
                            blockquoteNode.parentNode.removeChild(blockquoteNode);
                        }
                    } else {
                        scribe.api.CommandPatch.prototype.execute.call(this);
                    }
                }
            }.bind(this));
        };
        scribe.commandPatches.outdent = outdentCommand;
    };
};
},{}],130:[function(require,module,exports){
'use strict';
module.exports = function () {
    return function (scribe) {
        var element = scribe.element;
        if (scribe.allowsBlockElements()) {
            scribe.el.addEventListener('keyup', function (event) {
                if (event.keyCode === 8 || event.keyCode === 46) {
                    var selection = new scribe.api.Selection();
                    var containerPElement = selection.getContaining(function (node) {
                            return node.nodeName === 'P';
                        });
                    if (containerPElement) {
                        if (scribe.undoManager) {
                            scribe.undoManager.undo();
                        }
                        scribe.transactionManager.run(function () {
                            selection.placeMarkers();
                            var pElementChildNodes = Array.prototype.slice.call(containerPElement.childNodes);
                            pElementChildNodes.forEach(function (pElementChildNode) {
                                if (pElementChildNode.nodeName === 'SPAN') {
                                    var spanElement = pElementChildNode;
                                    element.unwrap(containerPElement, spanElement);
                                } else if (pElementChildNode.nodeType === Node.ELEMENT_NODE) {
                                    pElementChildNode.style.lineHeight = null;
                                    if (pElementChildNode.getAttribute('style') === '') {
                                        pElementChildNode.removeAttribute('style');
                                    }
                                }
                            });
                            selection.selectMarkers();
                        });
                    }
                }
            });
        }
    };
};
},{}],131:[function(require,module,exports){
'use strict';
module.exports = function () {
    return function (scribe) {
        if (scribe.getHTML().trim() === '') {
            scribe.setContent('<p><br></p>');
        }
    };
};
},{}],132:[function(require,module,exports){
var defaults = require('lodash-amd/modern/objects/defaults'), commands = require('./plugins/core/commands'), events = require('./plugins/core/events'), replaceNbspCharsFormatter = require('./plugins/core/formatters/html/replace-nbsp-chars'), enforcePElements = require('./plugins/core/formatters/html/enforce-p-elements'), ensureSelectableContainers = require('./plugins/core/formatters/html/ensure-selectable-containers'), escapeHtmlCharactersFormatter = require('./plugins/core/formatters/plain-text/escape-html-characters'), inlineElementsMode = require('./plugins/core/inline-elements-mode'), patches = require('./plugins/core/patches'), setRootPElement = require('./plugins/core/set-root-p-element'), Api = require('./api'), buildTransactionManager = require('./transaction-manager'), buildUndoManager = require('./undo-manager'), EventEmitter = require('./event-emitter'), elementHelpers = require('./element'), nodeHelpers = require('./node'), Immutable = require('immutable/dist/immutable');
'use strict';
function Scribe(el, options) {
    EventEmitter.call(this);
    this.el = el;
    this.commands = {};
    this.options = defaults(options || {}, {
        allowBlockElements: true,
        debug: false,
        undo: { enabled: true },
        defaultCommandPatches: [
            'bold',
            'indent',
            'insertHTML',
            'insertList',
            'outdent',
            'createLink'
        ]
    });
    this.commandPatches = {};
    this._plainTextFormatterFactory = new FormatterFactory();
    this._htmlFormatterFactory = new HTMLFormatterFactory();
    this.api = new Api(this);
    this.node = nodeHelpers;
    this.element = elementHelpers;
    this.Immutable = Immutable;
    var TransactionManager = buildTransactionManager(this);
    this.transactionManager = new TransactionManager();
    this.undoManager = false;
    if (this.options.undo.enabled) {
        var UndoManager = buildUndoManager(this);
        this.undoManager = new UndoManager();
    }
    this.el.setAttribute('contenteditable', true);
    this.el.addEventListener('input', function () {
        this.transactionManager.run();
    }.bind(this), false);
    if (this.allowsBlockElements()) {
        this.use(setRootPElement());
        this.use(enforcePElements());
        this.use(ensureSelectableContainers());
    } else {
        this.use(inlineElementsMode());
    }
    var defaultFormatters = Immutable.List.of(escapeHtmlCharactersFormatter, replaceNbspCharsFormatter);
    var defaultPatches = Immutable.List.of(patches.events);
    var defaultCommandPatches = Immutable.List(this.options.defaultCommandPatches).map(function (patch) {
            return patches.commands[patch];
        });
    var defaultCommands = Immutable.List.of('indent', 'insertList', 'outdent', 'redo', 'subscript', 'superscript', 'undo').map(function (command) {
            return commands[command];
        });
    var allPlugins = Immutable.List().concat(defaultFormatters, defaultPatches, defaultCommandPatches, defaultCommands);
    allPlugins.forEach(function (plugin) {
        this.use(plugin());
    }.bind(this));
    this.use(events());
}
Scribe.prototype = Object.create(EventEmitter.prototype);
Scribe.prototype.use = function (configurePlugin) {
    configurePlugin(this);
    return this;
};
Scribe.prototype.setHTML = function (html, skipFormatters) {
    if (skipFormatters) {
        this._skipFormatters = true;
    }
    if (this.el.innerHTML !== html) {
        this.el.innerHTML = html;
    }
};
Scribe.prototype.getHTML = function () {
    return this.el.innerHTML;
};
Scribe.prototype.getContent = function () {
    return this._htmlFormatterFactory.formatForExport(this.getHTML().replace(/<br>$/, ''));
};
Scribe.prototype.getTextContent = function () {
    return this.el.textContent;
};
Scribe.prototype.pushHistory = function () {
    if (this.options.undo.enabled) {
        var previousUndoItem = this.undoManager.stack[this.undoManager.position];
        var previousContent = previousUndoItem && previousUndoItem.replace(/<em class="scribe-marker">/g, '').replace(/<\/em>/g, '');
        if (!previousUndoItem || previousUndoItem && this.getHTML() !== previousContent) {
            var selection = new this.api.Selection();
            selection.placeMarkers();
            var html = this.getHTML();
            selection.removeMarkers();
            this.undoManager.push(html);
            return true;
        } else {
            return false;
        }
    } else {
        return false;
    }
};
Scribe.prototype.getCommand = function (commandName) {
    return this.commands[commandName] || this.commandPatches[commandName] || new this.api.Command(commandName);
};
Scribe.prototype.restoreFromHistory = function (historyItem) {
    this.setHTML(historyItem, true);
    var selection = new this.api.Selection();
    selection.selectMarkers();
    this.trigger('content-changed');
};
Scribe.prototype.allowsBlockElements = function () {
    return this.options.allowBlockElements;
};
Scribe.prototype.setContent = function (content) {
    if (!this.allowsBlockElements()) {
        content = content + '<br>';
    }
    this.setHTML(content);
    this.trigger('content-changed');
};
Scribe.prototype.insertPlainText = function (plainText) {
    this.insertHTML('<p>' + this._plainTextFormatterFactory.format(plainText) + '</p>');
};
Scribe.prototype.insertHTML = function (html) {
    this.getCommand('insertHTML').execute(this._htmlFormatterFactory.format(html));
};
Scribe.prototype.isDebugModeEnabled = function () {
    return this.options.debug;
};
Scribe.prototype.registerHTMLFormatter = function (phase, formatter) {
    this._htmlFormatterFactory.formatters[phase] = this._htmlFormatterFactory.formatters[phase].push(formatter);
};
Scribe.prototype.registerPlainTextFormatter = function (formatter) {
    this._plainTextFormatterFactory.formatters = this._plainTextFormatterFactory.formatters.push(formatter);
};
function FormatterFactory() {
    this.formatters = Immutable.List();
}
FormatterFactory.prototype.format = function (html) {
    var formatted = this.formatters.reduce(function (formattedData, formatter) {
            return formatter(formattedData);
        }, html);
    return formatted;
};
function HTMLFormatterFactory() {
    this.formatters = {
        sanitize: Immutable.List(),
        normalize: Immutable.List(),
        'export': Immutable.List()
    };
}
HTMLFormatterFactory.prototype = Object.create(FormatterFactory.prototype);
HTMLFormatterFactory.prototype.constructor = HTMLFormatterFactory;
HTMLFormatterFactory.prototype.format = function (html) {
    var formatters = this.formatters.sanitize.concat(this.formatters.normalize);
    var formatted = formatters.reduce(function (formattedData, formatter) {
            return formatter(formattedData);
        }, html);
    return formatted;
};
HTMLFormatterFactory.prototype.formatForExport = function (html) {
    return this.formatters['export'].reduce(function (formattedData, formatter) {
        return formatter(formattedData);
    }, html);
};
module.exports = Scribe;
},{"./api":99,"./element":106,"./event-emitter":107,"./node":108,"./plugins/core/commands":109,"./plugins/core/events":117,"./plugins/core/formatters/html/enforce-p-elements":118,"./plugins/core/formatters/html/ensure-selectable-containers":119,"./plugins/core/formatters/html/replace-nbsp-chars":120,"./plugins/core/formatters/plain-text/escape-html-characters":121,"./plugins/core/inline-elements-mode":122,"./plugins/core/patches":123,"./plugins/core/set-root-p-element":131,"./transaction-manager":133,"./undo-manager":134,"immutable/dist/immutable":54,"lodash-amd/modern/objects/defaults":84}],133:[function(require,module,exports){
var assign = require('lodash-amd/modern/objects/assign');
'use strict';
module.exports = function (scribe) {
    function TransactionManager() {
        this.history = [];
    }
    assign(TransactionManager.prototype, {
        start: function () {
            this.history.push(1);
        },
        end: function () {
            this.history.pop();
            if (this.history.length === 0) {
                scribe.pushHistory();
                scribe.trigger('content-changed');
            }
        },
        run: function (transaction) {
            this.start();
            try {
                if (transaction) {
                    transaction();
                }
            } finally {
                this.end();
            }
        }
    });
    return TransactionManager;
};
},{"lodash-amd/modern/objects/assign":83}],134:[function(require,module,exports){
'use strict';
module.exports = function (scribe) {
    function UndoManager() {
        this.position = -1;
        this.stack = [];
        this.debug = scribe.isDebugModeEnabled();
    }
    UndoManager.prototype.maxStackSize = 100;
    UndoManager.prototype.push = function (item) {
        if (this.debug) {
            console.log('UndoManager.push: %s', item);
        }
        this.stack.length = ++this.position;
        this.stack.push(item);
        while (this.stack.length > this.maxStackSize) {
            this.stack.shift();
            --this.position;
        }
    };
    UndoManager.prototype.undo = function () {
        if (this.position > 0) {
            return this.stack[--this.position];
        }
    };
    UndoManager.prototype.redo = function () {
        if (this.position < this.stack.length - 1) {
            return this.stack[++this.position];
        }
    };
    return UndoManager;
};
},{}],135:[function(require,module,exports){
'use strict';
module.exports = function () {
    return function (scribe) {
        scribe.registerPlainTextFormatter(function (html) {
            return html.replace(/\n([ \t]*\n)+/g, '</p><p>').replace(/\n/g, '<br>');
        });
    };
};
},{}],136:[function(require,module,exports){
'use strict';
module.exports = function () {
    return function (scribe) {
        var linkPromptCommand = new scribe.api.Command('createLink');
        linkPromptCommand.nodeName = 'A';
        linkPromptCommand.execute = function () {
            var selection = new scribe.api.Selection();
            var range = selection.range;
            var anchorNode = selection.getContaining(function (node) {
                    return node.nodeName === this.nodeName;
                }.bind(this));
            var initialLink = anchorNode ? anchorNode.href : 'http://';
            var link = window.prompt('Enter a link.', initialLink);
            if (anchorNode) {
                range.selectNode(anchorNode);
                selection.selection.removeAllRanges();
                selection.selection.addRange(range);
            }
            if (link) {
                var urlProtocolRegExp = /^https?\:\/\//;
                if (!urlProtocolRegExp.test(link)) {
                    if (!/^mailto\:/.test(link) && /@/.test(link)) {
                        var shouldPrefixEmail = window.confirm('The URL you entered appears to be an email address. ' + 'Do you want to add the required \u201cmailto:\u201d prefix?');
                        if (shouldPrefixEmail) {
                            link = 'mailto:' + link;
                        }
                    } else {
                        var shouldPrefixLink = window.confirm('The URL you entered appears to be a link. ' + 'Do you want to add the required \u201chttp://\u201d prefix?');
                        if (shouldPrefixLink) {
                            link = 'http://' + link;
                        }
                    }
                }
                scribe.api.SimpleCommand.prototype.execute.call(this, link);
            }
        };
        linkPromptCommand.queryState = function () {
            var selection = new scribe.api.Selection();
            return !!selection.getContaining(function (node) {
                return node.nodeName === this.nodeName;
            }.bind(this));
        };
        scribe.commands.linkPrompt = linkPromptCommand;
    };
};
},{}],137:[function(require,module,exports){
/**
 * Copyright (c) 2011-2014 Felix Gnass
 * Licensed under the MIT license
 */
(function(root, factory) {

  /* CommonJS */
  if (typeof exports == 'object')  module.exports = factory()

  /* AMD module */
  else if (typeof define == 'function' && define.amd) define(factory)

  /* Browser global */
  else root.Spinner = factory()
}
(this, function() {
  "use strict";

  var prefixes = ['webkit', 'Moz', 'ms', 'O'] /* Vendor prefixes */
    , animations = {} /* Animation rules keyed by their name */
    , useCssAnimations /* Whether to use CSS animations or setTimeout */

  /**
   * Utility function to create elements. If no tag name is given,
   * a DIV is created. Optionally properties can be passed.
   */
  function createEl(tag, prop) {
    var el = document.createElement(tag || 'div')
      , n

    for(n in prop) el[n] = prop[n]
    return el
  }

  /**
   * Appends children and returns the parent.
   */
  function ins(parent /* child1, child2, ...*/) {
    for (var i=1, n=arguments.length; i<n; i++)
      parent.appendChild(arguments[i])

    return parent
  }

  /**
   * Insert a new stylesheet to hold the @keyframe or VML rules.
   */
  var sheet = (function() {
    var el = createEl('style', {type : 'text/css'})
    ins(document.getElementsByTagName('head')[0], el)
    return el.sheet || el.styleSheet
  }())

  /**
   * Creates an opacity keyframe animation rule and returns its name.
   * Since most mobile Webkits have timing issues with animation-delay,
   * we create separate rules for each line/segment.
   */
  function addAnimation(alpha, trail, i, lines) {
    var name = ['opacity', trail, ~~(alpha*100), i, lines].join('-')
      , start = 0.01 + i/lines * 100
      , z = Math.max(1 - (1-alpha) / trail * (100-start), alpha)
      , prefix = useCssAnimations.substring(0, useCssAnimations.indexOf('Animation')).toLowerCase()
      , pre = prefix && '-' + prefix + '-' || ''

    if (!animations[name]) {
      sheet.insertRule(
        '@' + pre + 'keyframes ' + name + '{' +
        '0%{opacity:' + z + '}' +
        start + '%{opacity:' + alpha + '}' +
        (start+0.01) + '%{opacity:1}' +
        (start+trail) % 100 + '%{opacity:' + alpha + '}' +
        '100%{opacity:' + z + '}' +
        '}', sheet.cssRules.length)

      animations[name] = 1
    }

    return name
  }

  /**
   * Tries various vendor prefixes and returns the first supported property.
   */
  function vendor(el, prop) {
    var s = el.style
      , pp
      , i

    prop = prop.charAt(0).toUpperCase() + prop.slice(1)
    for(i=0; i<prefixes.length; i++) {
      pp = prefixes[i]+prop
      if(s[pp] !== undefined) return pp
    }
    if(s[prop] !== undefined) return prop
  }

  /**
   * Sets multiple style properties at once.
   */
  function css(el, prop) {
    for (var n in prop)
      el.style[vendor(el, n)||n] = prop[n]

    return el
  }

  /**
   * Fills in default values.
   */
  function merge(obj) {
    for (var i=1; i < arguments.length; i++) {
      var def = arguments[i]
      for (var n in def)
        if (obj[n] === undefined) obj[n] = def[n]
    }
    return obj
  }

  /**
   * Returns the line color from the given string or array.
   */
  function getColor(color, idx) {
    return typeof color == 'string' ? color : color[idx % color.length]
  }

  // Built-in defaults

  var defaults = {
    lines: 12,            // The number of lines to draw
    length: 7,            // The length of each line
    width: 5,             // The line thickness
    radius: 10,           // The radius of the inner circle
    rotate: 0,            // Rotation offset
    corners: 1,           // Roundness (0..1)
    color: '#000',        // #rgb or #rrggbb
    direction: 1,         // 1: clockwise, -1: counterclockwise
    speed: 1,             // Rounds per second
    trail: 100,           // Afterglow percentage
    opacity: 1/4,         // Opacity of the lines
    fps: 20,              // Frames per second when using setTimeout()
    zIndex: 2e9,          // Use a high z-index by default
    className: 'spinner', // CSS class to assign to the element
    top: '50%',           // center vertically
    left: '50%',          // center horizontally
    position: 'absolute'  // element position
  }

  /** The constructor */
  function Spinner(o) {
    this.opts = merge(o || {}, Spinner.defaults, defaults)
  }

  // Global defaults that override the built-ins:
  Spinner.defaults = {}

  merge(Spinner.prototype, {

    /**
     * Adds the spinner to the given target element. If this instance is already
     * spinning, it is automatically removed from its previous target b calling
     * stop() internally.
     */
    spin: function(target) {
      this.stop()

      var self = this
        , o = self.opts
        , el = self.el = css(createEl(0, {className: o.className}), {position: o.position, width: 0, zIndex: o.zIndex})

      css(el, {
        left: o.left,
        top: o.top
      })
        
      if (target) {
        target.insertBefore(el, target.firstChild||null)
      }

      el.setAttribute('role', 'progressbar')
      self.lines(el, self.opts)

      if (!useCssAnimations) {
        // No CSS animation support, use setTimeout() instead
        var i = 0
          , start = (o.lines - 1) * (1 - o.direction) / 2
          , alpha
          , fps = o.fps
          , f = fps/o.speed
          , ostep = (1-o.opacity) / (f*o.trail / 100)
          , astep = f/o.lines

        ;(function anim() {
          i++;
          for (var j = 0; j < o.lines; j++) {
            alpha = Math.max(1 - (i + (o.lines - j) * astep) % f * ostep, o.opacity)

            self.opacity(el, j * o.direction + start, alpha, o)
          }
          self.timeout = self.el && setTimeout(anim, ~~(1000/fps))
        })()
      }
      return self
    },

    /**
     * Stops and removes the Spinner.
     */
    stop: function() {
      var el = this.el
      if (el) {
        clearTimeout(this.timeout)
        if (el.parentNode) el.parentNode.removeChild(el)
        this.el = undefined
      }
      return this
    },

    /**
     * Internal method that draws the individual lines. Will be overwritten
     * in VML fallback mode below.
     */
    lines: function(el, o) {
      var i = 0
        , start = (o.lines - 1) * (1 - o.direction) / 2
        , seg

      function fill(color, shadow) {
        return css(createEl(), {
          position: 'absolute',
          width: (o.length+o.width) + 'px',
          height: o.width + 'px',
          background: color,
          boxShadow: shadow,
          transformOrigin: 'left',
          transform: 'rotate(' + ~~(360/o.lines*i+o.rotate) + 'deg) translate(' + o.radius+'px' +',0)',
          borderRadius: (o.corners * o.width>>1) + 'px'
        })
      }

      for (; i < o.lines; i++) {
        seg = css(createEl(), {
          position: 'absolute',
          top: 1+~(o.width/2) + 'px',
          transform: o.hwaccel ? 'translate3d(0,0,0)' : '',
          opacity: o.opacity,
          animation: useCssAnimations && addAnimation(o.opacity, o.trail, start + i * o.direction, o.lines) + ' ' + 1/o.speed + 's linear infinite'
        })

        if (o.shadow) ins(seg, css(fill('#000', '0 0 4px ' + '#000'), {top: 2+'px'}))
        ins(el, ins(seg, fill(getColor(o.color, i), '0 0 1px rgba(0,0,0,.1)')))
      }
      return el
    },

    /**
     * Internal method that adjusts the opacity of a single line.
     * Will be overwritten in VML fallback mode below.
     */
    opacity: function(el, i, val) {
      if (i < el.childNodes.length) el.childNodes[i].style.opacity = val
    }

  })


  function initVML() {

    /* Utility function to create a VML tag */
    function vml(tag, attr) {
      return createEl('<' + tag + ' xmlns="urn:schemas-microsoft.com:vml" class="spin-vml">', attr)
    }

    // No CSS transforms but VML support, add a CSS rule for VML elements:
    sheet.addRule('.spin-vml', 'behavior:url(#default#VML)')

    Spinner.prototype.lines = function(el, o) {
      var r = o.length+o.width
        , s = 2*r

      function grp() {
        return css(
          vml('group', {
            coordsize: s + ' ' + s,
            coordorigin: -r + ' ' + -r
          }),
          { width: s, height: s }
        )
      }

      var margin = -(o.width+o.length)*2 + 'px'
        , g = css(grp(), {position: 'absolute', top: margin, left: margin})
        , i

      function seg(i, dx, filter) {
        ins(g,
          ins(css(grp(), {rotation: 360 / o.lines * i + 'deg', left: ~~dx}),
            ins(css(vml('roundrect', {arcsize: o.corners}), {
                width: r,
                height: o.width,
                left: o.radius,
                top: -o.width>>1,
                filter: filter
              }),
              vml('fill', {color: getColor(o.color, i), opacity: o.opacity}),
              vml('stroke', {opacity: 0}) // transparent stroke to fix color bleeding upon opacity change
            )
          )
        )
      }

      if (o.shadow)
        for (i = 1; i <= o.lines; i++)
          seg(i, -2, 'progid:DXImageTransform.Microsoft.Blur(pixelradius=2,makeshadow=1,shadowopacity=.3)')

      for (i = 1; i <= o.lines; i++) seg(i)
      return ins(el, g)
    }

    Spinner.prototype.opacity = function(el, i, val, o) {
      var c = el.firstChild
      o = o.shadow && o.lines || 0
      if (c && i+o < c.childNodes.length) {
        c = c.childNodes[i+o]; c = c && c.firstChild; c = c && c.firstChild
        if (c) c.opacity = val
      }
    }
  }

  var probe = css(createEl('group'), {behavior: 'url(#default#VML)'})

  if (!vendor(probe, 'transform') && probe.adj) initVML()
  else useCssAnimations = vendor(probe, 'animation')

  return Spinner

}));

},{}],138:[function(require,module,exports){
"use strict";

var _ = require('./lodash');
var Blocks = require('./blocks');

var BlockControl = function(type) {
  this.type = type;
  this.block_type = Blocks[this.type].prototype;
  this.can_be_rendered = this.block_type.toolbarEnabled;

  this._ensureElement();
};

Object.assign(BlockControl.prototype, require('./function-bind'), require('./renderable'), require('./events'), {

  tagName: 'a',
  className: "st-block-control",

  attributes: function() {
    return {
      'data-type': this.block_type.type
    };
  },

  render: function() {
    this.$el.html('<span class="st-icon">'+ _.result(this.block_type, 'icon_name') +'</span>' + _.result(this.block_type, 'title'));
    return this;
  }
});

module.exports = BlockControl;

},{"./blocks":156,"./events":166,"./function-bind":173,"./lodash":178,"./renderable":180}],139:[function(require,module,exports){
(function (global){
"use strict";

/*
 * SirTrevor Block Controls
 * --
 * Gives an interface for adding new Sir Trevor blocks.
 */

var _ = require('./lodash');
var $ = (typeof window !== "undefined" ? window.$ : typeof global !== "undefined" ? global.$ : null);

var Blocks = require('./blocks');
var BlockControl = require('./block-control');
var EventBus = require('./event-bus');

var BlockControls = function(available_types, mediator) {
  this.available_types = available_types || [];
  this.mediator = mediator;

  this._ensureElement();
  this._bindFunctions();
  this._bindMediatedEvents();

  this.initialize();
};

Object.assign(BlockControls.prototype, require('./function-bind'), require('./mediated-events'), require('./renderable'), require('./events'), {

  bound: ['handleControlButtonClick'],
  block_controls: null,

  className: "st-block-controls",
  eventNamespace: 'block-controls',

  mediatedEvents: {
    'render': 'renderInContainer',
    'show': 'show',
    'hide': 'hide'
  },

  initialize: function() {
    for(var block_type in this.available_types) {
      if (Blocks.hasOwnProperty(block_type)) {
        var block_control = new BlockControl(block_type);
        if (block_control.can_be_rendered) {
          this.$el.append(block_control.render().$el);
        }
      }
    }

    this.$el.delegate('.st-block-control', 'click', this.handleControlButtonClick);
    this.mediator.on('block-controls:show', this.renderInContainer);
  },

  show: function() {
    this.$el.addClass('st-block-controls--active');

    EventBus.trigger('block:controls:shown');
  },

  hide: function() {
    this.removeCurrentContainer();
    this.$el.removeClass('st-block-controls--active');

    EventBus.trigger('block:controls:hidden');
  },

  handleControlButtonClick: function(e) {
    e.stopPropagation();

    this.mediator.trigger('block:create', $(e.currentTarget).attr('data-type'));
  },

  renderInContainer: function(container) {
    this.removeCurrentContainer();

    container.append(this.$el.detach());
    container.addClass('with-st-controls');

    this.currentContainer = container;
    this.show();
  },

  removeCurrentContainer: function() {
    if (!_.isUndefined(this.currentContainer)) {
      this.currentContainer.removeClass("with-st-controls");
      this.currentContainer = undefined;
    }
  }
});

module.exports = BlockControls;

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./block-control":138,"./blocks":156,"./event-bus":165,"./events":166,"./function-bind":173,"./lodash":178,"./mediated-events":179,"./renderable":180}],140:[function(require,module,exports){
"use strict";

var BlockDeletion = function() {
  this._ensureElement();
  this._bindFunctions();
};

Object.assign(BlockDeletion.prototype, require('./function-bind'), require('./renderable'), {

  tagName: 'a',
  className: 'st-block-ui-btn st-block-ui-btn--delete st-icon',

  attributes: {
    html: 'delete',
    'data-icon': 'bin'
  }

});

module.exports = BlockDeletion;

},{"./function-bind":173,"./renderable":180}],141:[function(require,module,exports){
"use strict";

var _ = require('./lodash');
var utils = require('./utils');
var config = require('./config');

var EventBus = require('./event-bus');
var Blocks = require('./blocks');

var BLOCK_OPTION_KEYS = ['convertToMarkdown', 'convertFromMarkdown',
  'formatBar'];

var BlockManager = function(options, editorInstance, mediator) {
  this.options = options;
  this.blockOptions = BLOCK_OPTION_KEYS.reduce(function(acc, key) {
    acc[key] = options[key];
    return acc;
  }, {});
  this.instance_scope = editorInstance;
  this.mediator = mediator;

  this.blocks = [];
  this.blockCounts = {};
  this.blockTypes = {};

  this._setBlocksTypes();
  this._setRequired();
  this._bindMediatedEvents();

  this.initialize();
};

Object.assign(BlockManager.prototype, require('./function-bind'), require('./mediated-events'), require('./events'), {

  eventNamespace: 'block',

  mediatedEvents: {
    'create': 'createBlock',
    'remove': 'removeBlock',
    'rerender': 'rerenderBlock'
  },

  initialize: function() {},

  createBlock: function(type, data) {
    type = utils.classify(type);

    // Run validations
    if (!this.canCreateBlock(type)) { return; }

    var block = new Blocks[type](data, this.instance_scope, this.mediator,
                                 this.blockOptions);
    this.blocks.push(block);

    this._incrementBlockTypeCount(type);
    this.mediator.trigger('block:render', block);

    this.triggerBlockCountUpdate();
    this.mediator.trigger('block:limitReached', this.blockLimitReached());

    EventBus.trigger(data ? "block:create:existing" : "block:create:new", block);
    utils.log("Block created of type " + type);
  },

  removeBlock: function(blockID) {
    var block = this.findBlockById(blockID),
    type = utils.classify(block.type);

    this.mediator.trigger('block-controls:reset');
    this.blocks = this.blocks.filter(function(item) {
      return (item.blockID !== block.blockID);
    });

    this._decrementBlockTypeCount(type);
    this.triggerBlockCountUpdate();
    this.mediator.trigger('block:limitReached', this.blockLimitReached());

    EventBus.trigger("block:remove");
  },

  rerenderBlock: function(blockID) {
    var block = this.findBlockById(blockID);
    if (!_.isUndefined(block) && !block.isEmpty() &&
        block.drop_options.re_render_on_reorder) {
      block.beforeLoadingData();
    }
  },

  triggerBlockCountUpdate: function() {
    this.mediator.trigger('block:countUpdate', this.blocks.length);
  },

  canCreateBlock: function(type) {
    if(this.blockLimitReached()) {
      utils.log("Cannot add any more blocks. Limit reached.");
      return false;
    }

    if (!this.isBlockTypeAvailable(type)) {
      utils.log("Block type not available " + type);
      return false;
    }

    // Can we have another one of these blocks?
    if (!this.canAddBlockType(type)) {
      utils.log("Block Limit reached for type " + type);
      return false;
    }

    return true;
  },

  validateBlockTypesExist: function(shouldValidate) {
    if (config.skipValidation || !shouldValidate) { return false; }

    (this.required || []).forEach(function(type, index) {
      if (!this.isBlockTypeAvailable(type)) { return; }

      if (this._getBlockTypeCount(type) === 0) {
        utils.log("Failed validation on required block type " + type);
        this.mediator.trigger('errors:add',
                              { text: i18n.t("errors:type_missing", { type: type }) });

      } else {
        var blocks = this.getBlocksByType(type).filter(function(b) {
          return !b.isEmpty();
        });

        if (blocks.length > 0) { return false; }

        this.mediator.trigger('errors:add', {
          text: i18n.t("errors:required_type_empty", {type: type})
        });

        utils.log("A required block type " + type + " is empty");
      }
    }, this);
  },

  findBlockById: function(blockID) {
    return this.blocks.find(function(b) {
      return b.blockID === blockID;
    });
  },

  getBlocksByType: function(type) {
    return this.blocks.filter(function(b) {
      return utils.classify(b.type) === type;
    });
  },

  getBlocksByIDs: function(block_ids) {
    return this.blocks.filter(function(b) {
      return block_ids.includes(b.blockID);
    });
  },

  blockLimitReached: function() {
    return (this.options.blockLimit !== 0 && this.blocks.length >= this.options.blockLimit);
  },

  isBlockTypeAvailable: function(t) {
    return !_.isUndefined(this.blockTypes[t]);
  },

  canAddBlockType: function(type) {
    var block_type_limit = this._getBlockTypeLimit(type);
    return !(block_type_limit !== 0 && this._getBlockTypeCount(type) >= block_type_limit);
  },

  _setBlocksTypes: function() {
    this.blockTypes = utils.flatten(
      _.isUndefined(this.options.blockTypes) ?
      Blocks : this.options.blockTypes);
  },

  _setRequired: function() {
    this.required = false;

    if (Array.isArray(this.options.required) && !_.isEmpty(this.options.required)) {
      this.required = this.options.required;
    }
  },

  _incrementBlockTypeCount: function(type) {
    this.blockCounts[type] = (_.isUndefined(this.blockCounts[type])) ? 1 : this.blockCounts[type] + 1;
  },

  _decrementBlockTypeCount: function(type) {
    this.blockCounts[type] = (_.isUndefined(this.blockCounts[type])) ? 1 : this.blockCounts[type] - 1;
  },

  _getBlockTypeCount: function(type) {
    return (_.isUndefined(this.blockCounts[type])) ? 0 : this.blockCounts[type];
  },

  _blockLimitReached: function() {
    return (this.options.blockLimit !== 0 && this.blocks.length >= this.options.blockLimit);
  },

  _getBlockTypeLimit: function(t) {
    if (!this.isBlockTypeAvailable(t)) { return 0; }
    return parseInt((_.isUndefined(this.options.blockTypeLimits[t])) ? 0 : this.options.blockTypeLimits[t], 10);
  }

});

module.exports = BlockManager;


},{"./blocks":156,"./config":162,"./event-bus":165,"./events":166,"./function-bind":173,"./lodash":178,"./mediated-events":179,"./utils":184}],142:[function(require,module,exports){
"use strict";

var template = [
  "<div class='st-block-positioner__inner'>",
  "<span class='st-block-positioner__selected-value'></span>",
  "<select class='st-block-positioner__select'></select>",
  "</div>"
].join("\n");

var BlockPositioner = function(block_element, mediator) {
  this.mediator = mediator;
  this.$block = block_element;

  this._ensureElement();
  this._bindFunctions();

  this.initialize();
};

Object.assign(BlockPositioner.prototype, require('./function-bind'), require('./renderable'), {

  total_blocks: 0,

  bound: ['onBlockCountChange', 'onSelectChange', 'toggle', 'show', 'hide'],

  className: 'st-block-positioner',
  visibleClass: 'st-block-positioner--is-visible',

  initialize: function(){
    this.$el.append(template);
    this.$select = this.$('.st-block-positioner__select');

    this.$select.on('change', this.onSelectChange);

    this.mediator.on("block:countUpdate", this.onBlockCountChange);
  },

  onBlockCountChange: function(new_count) {
    if (new_count !== this.total_blocks) {
      this.total_blocks = new_count;
      this.renderPositionList();
    }
  },

  onSelectChange: function() {
    var val = this.$select.val();
    if (val !== 0) {
      this.mediator.trigger(
        "block:changePosition", this.$block, val,
        (val === 1 ? 'before' : 'after'));
      this.toggle();
    }
  },

  renderPositionList: function() {
    var inner = "<option value='0'>" + i18n.t("general:position") + "</option>";
    for(var i = 1; i <= this.total_blocks; i++) {
      inner += "<option value="+i+">"+i+"</option>";
    }
    this.$select.html(inner);
  },

  toggle: function() {
    this.$select.val(0);
    this.$el.toggleClass(this.visibleClass);
  },

  show: function(){
    this.$el.addClass(this.visibleClass);
  },

  hide: function(){
    this.$el.removeClass(this.visibleClass);
  }

});

module.exports = BlockPositioner;

},{"./function-bind":173,"./renderable":180}],143:[function(require,module,exports){
(function (global){
"use strict";

var _ = require('./lodash');
var $ = (typeof window !== "undefined" ? window.$ : typeof global !== "undefined" ? global.$ : null);

var EventBus = require('./event-bus');

var BlockReorder = function(block_element, mediator) {
  this.$block = block_element;
  this.blockID = this.$block.attr('id');
  this.mediator = mediator;

  this._ensureElement();
  this._bindFunctions();

  this.initialize();
};

Object.assign(BlockReorder.prototype, require('./function-bind'), require('./renderable'), {

  bound: ['onMouseDown', 'onDragStart', 'onDragEnd', 'onDrop'],

  className: 'st-block-ui-btn st-block-ui-btn--reorder st-icon',
  tagName: 'a',

  attributes: function() {
    return {
      'html': 'reorder',
      'draggable': 'true',
      'data-icon': 'move'
    };
  },

  initialize: function() {
    this.$el.bind('mousedown touchstart', this.onMouseDown)
      .bind('dragstart', this.onDragStart)
      .bind('dragend touchend', this.onDragEnd);

    this.$block.dropArea()
      .bind('drop', this.onDrop);
  },

  blockId: function() {
    return this.$block.attr('id');
  },

  onMouseDown: function() {
    this.mediator.trigger("block-controls:hide");
    EventBus.trigger("block:reorder:down");
  },

  onDrop: function(ev) {
    ev.preventDefault();

    var dropped_on = this.$block,
    item_id = ev.originalEvent.dataTransfer.getData("text/plain"),
    block = $('#' + item_id);

    if (!_.isUndefined(item_id) && !_.isEmpty(block) &&
        dropped_on.attr('id') !== item_id &&
          dropped_on.attr('data-instance') === block.attr('data-instance')
       ) {
       dropped_on.after(block);
     }
     this.mediator.trigger("block:rerender", item_id);
     EventBus.trigger("block:reorder:dropped", item_id);
  },

  onDragStart: function(ev) {
    var btn = $(ev.currentTarget).parent();

    ev.originalEvent.dataTransfer.setDragImage(this.$block[0], btn.position().left, btn.position().top);
    ev.originalEvent.dataTransfer.setData('Text', this.blockId());

    EventBus.trigger("block:reorder:dragstart");
    this.$block.addClass('st-block--dragging');
  },

  onDragEnd: function(ev) {
    EventBus.trigger("block:reorder:dragend");
    this.$block.removeClass('st-block--dragging');
  },

  render: function() {
    return this;
  }

});

module.exports = BlockReorder;

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./event-bus":165,"./function-bind":173,"./lodash":178,"./renderable":180}],144:[function(require,module,exports){
"use strict";

var _ = require('./lodash');
var utils = require('./utils');

var EventBus = require('./event-bus');

module.exports = {

  /**
   * Internal storage object for the block
   */
  blockStorage: {},

  /**
   * Initialize the store, including the block type
   */
  createStore: function(blockData) {
    this.blockStorage = {
      type: utils.underscored(this.type),
      data: blockData || {}
    };
  },

  /**
   * Serialize the block and save the data into the store
   */
  save: function() {
    var data = this._serializeData();

    if (!_.isEmpty(data)) {
      this.setData(data);
    }
  },

  getData: function() {
    this.save();
    return this.blockStorage;
  },

  getBlockData: function() {
    this.save();
    return this.blockStorage.data;
  },

  _getData: function() {
    return this.blockStorage.data;
  },

  /**
   * Set the block data.
   * This is used by the save() method.
   */
  setData: function(blockData) {
    utils.log("Setting data for block " + this.blockID);
    Object.assign(this.blockStorage.data, blockData || {});
  },

  setAndLoadData: function(blockData) {
    this.setData(blockData);
    this.beforeLoadingData();
  },

  _serializeData: function() {},
  loadData: function() {},

  beforeLoadingData: function() {
    utils.log("loadData for " + this.blockID);
    EventBus.trigger("editor/block/loadData");
    this.loadData(this._getData());
  },

  _loadData: function() {
    utils.log("_loadData is deprecated and will be removed in the future. Please use beforeLoadingData instead.");
    this.beforeLoadingData();
  },

  checkAndLoadData: function() {
    if (!_.isEmpty(this._getData())) {
      this.beforeLoadingData();
    }
  }

};

},{"./event-bus":165,"./lodash":178,"./utils":184}],145:[function(require,module,exports){
(function (global){
"use strict";

var _ = require('./lodash');
var $ = (typeof window !== "undefined" ? window.$ : typeof global !== "undefined" ? global.$ : null);
var utils = require('./utils');

var bestNameFromField = function(field) {
  var msg = field.attr("data-st-name") || field.attr("name");

  if (!msg) {
    msg = 'Field';
  }

  return utils.capitalize(msg);
};

module.exports = {

  errors: [],

  valid: function(){
    this.performValidations();
    return this.errors.length === 0;
  },

  // This method actually does the leg work
  // of running our validators and custom validators
  performValidations: function() {
    this.resetErrors();

    var required_fields = this.$('.st-required');
    required_fields.each(function (i, f) {
      this.validateField(f);
    }.bind(this));
    this.validations.forEach(this.runValidator, this);

    this.$el.toggleClass('st-block--with-errors', this.errors.length > 0);
  },

  // Everything in here should be a function that returns true or false
  validations: [],

  validateField: function(field) {
    field = $(field);

    var content = field.attr('contenteditable') ? field.text() : field.val();

    if (content.length === 0) {
      this.setError(field, i18n.t("errors:block_empty",
                                 { name: bestNameFromField(field) }));
    }
  },

  runValidator: function(validator) {
    if (!_.isUndefined(this[validator])) {
      this[validator].call(this);
    }
  },

  setError: function(field, reason) {
    var $msg = this.addMessage(reason, "st-msg--error");
    field.addClass('st-error');

    this.errors.push({ field: field, reason: reason, msg: $msg });
  },

  resetErrors: function() {
    this.errors.forEach(function(error){
      error.field.removeClass('st-error');
      error.msg.remove();
    });

    this.$messages.removeClass("st-block__messages--is-visible");
    this.errors = [];
  }

};

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./lodash":178,"./utils":184}],146:[function(require,module,exports){
(function (global){
"use strict";

var _ = require('./lodash');
var $ = (typeof window !== "undefined" ? window.$ : typeof global !== "undefined" ? global.$ : null);

var Scribe = require('scribe-editor');
var scribePluginFormatterPlainTextConvertNewLinesToHTML = require('scribe-plugin-formatter-plain-text-convert-new-lines-to-html');
var scribePluginLinkPromptCommand = require('scribe-plugin-link-prompt-command');

var config = require('./config');
var utils = require('./utils');
var BlockMixins = require('./block_mixins');

var SimpleBlock = require('./simple-block');
var BlockReorder = require('./block-reorder');
var BlockDeletion = require('./block-deletion');
var BlockPositioner = require('./block-positioner');
var EventBus = require('./event-bus');

var Spinner = require('spin.js');

var Block = function(data, instance_id, mediator, options) {
  SimpleBlock.apply(this, arguments);
};

Block.prototype = Object.create(SimpleBlock.prototype);
Block.prototype.constructor = Block;

var delete_template = [
  "<div class='st-block__ui-delete-controls'>",
  "<label class='st-block__delete-label'>",
  "<%= i18n.t('general:delete') %>",
  "</label>",
  "<a class='st-block-ui-btn st-block-ui-btn--confirm-delete st-icon' data-icon='tick'></a>",
  "<a class='st-block-ui-btn st-block-ui-btn--deny-delete st-icon' data-icon='close'></a>",
  "</div>"
].join("\n");

Object.assign(Block.prototype, SimpleBlock.fn, require('./block-validations'), {

  bound: [
    "_handleContentPaste", "_onFocus", "_onBlur", "onDrop", "onDeleteClick",
    "clearInsertedStyles", "getSelectionForFormatter", "onBlockRender",
  ],

  className: 'st-block st-icon--add',

  attributes: function() {
    return Object.assign(SimpleBlock.fn.attributes.call(this), {
      'data-icon-after' : "add"
    });
  },

  icon_name: 'default',

  validationFailMsg: function() {
    return i18n.t('errors:validation_fail', { type: this.title() });
  },

  editorHTML: '<div class="st-block__editor"></div>',

  toolbarEnabled: true,

  availableMixins: ['droppable', 'pastable', 'uploadable', 'fetchable',
    'ajaxable', 'controllable'],

  droppable: false,
  pastable: false,
  uploadable: false,
  fetchable: false,
  ajaxable: false,

  drop_options: {},
  paste_options: {},
  upload_options: {},

  formattable: true,

  _previousSelection: '',

  initialize: function() {},

  toMarkdown: function(markdown){ return markdown; },
  toHTML: function(html){ return html; },

  withMixin: function(mixin) {
    if (!_.isObject(mixin)) { return; }

    var initializeMethod = "initialize" + mixin.mixinName;

    if (_.isUndefined(this[initializeMethod])) {
      Object.assign(this, mixin);
      this[initializeMethod]();
    }
  },

  render: function() {
    this.beforeBlockRender();
    this._setBlockInner();

    this.$editor = this.$inner.children().first();

    this.mixinsRequireInputs = false;
    this.availableMixins.forEach(function(mixin) {
      if (this[mixin]) {
        var blockMixin = BlockMixins[utils.classify(mixin)];
        if (!_.isUndefined(blockMixin.requireInputs) && blockMixin.requireInputs) {
          this.mixinsRequireInputs = true;
        }
      }
    }, this);

    if(this.mixinsRequireInputs) {
      var input_html = $("<div>", { 'class': 'st-block__inputs' });
      this.$inner.append(input_html);
      this.$inputs = input_html;
    }

    if (this.hasTextBlock()) { this._initTextBlocks(); }

    this.availableMixins.forEach(function(mixin) {
      if (this[mixin]) {
        this.withMixin(BlockMixins[utils.classify(mixin)]);
      }
    }, this);

    if (this.formattable) { this._initFormatting(); }

    this._blockPrepare();

    return this;
  },

  remove: function() {
    if (this.ajaxable) {
      this.resolveAllInQueue();
    }

    this.$el.remove();
  },

  loading: function() {
    if(!_.isUndefined(this.spinner)) { this.ready(); }

    this.spinner = new Spinner(config.defaults.spinner);
    this.spinner.spin(this.$el[0]);

    this.$el.addClass('st--is-loading');
  },

  ready: function() {
    this.$el.removeClass('st--is-loading');
    if (!_.isUndefined(this.spinner)) {
      this.spinner.stop();
      delete this.spinner;
    }
  },

  /* Generic _serializeData implementation to serialize the block into a plain object.
   * Can be overwritten, although hopefully this will cover most situations.
   * If you want to get the data of your block use block.getBlockData()
   */
  _serializeData: function() {
    utils.log("toData for " + this.blockID);

    var data = {};

    /* Simple to start. Add conditions later */
    if (this.hasTextBlock()) {
      data.text = this.getTextBlockHTML();
      data.isHtml = true;
    }

    // Add any inputs to the data attr
    if (this.$(':input').not('.st-paste-block').length > 0) {
      this.$(':input').each(function(index,input){
        if (input.getAttribute('name')) {
          data[input.getAttribute('name')] = input.value;
        }
      });
    }

    return data;
  },

  /* Generic implementation to tell us when the block is active */
  focus: function() {
    this.getTextBlock().focus();
  },

  blur: function() {
    this.getTextBlock().blur();
  },

  onFocus: function() {
    this.getTextBlock().bind('focus', this._onFocus);
  },

  onBlur: function() {
    this.getTextBlock().bind('blur', this._onBlur);
  },

  /*
   * Event handlers
   */

  _onFocus: function() {
    this.trigger('blockFocus', this.$el);
  },

  _onBlur: function() {},

  onBlockRender: function() {
    this.focus();
  },

  onDrop: function(dataTransferObj) {},

  onDeleteClick: function(ev) {
    ev.preventDefault();

    var onDeleteConfirm = function(e) {
      e.preventDefault();
      this.mediator.trigger('block:remove', this.blockID);
      this.remove();
    };

    var onDeleteDeny = function(e) {
      e.preventDefault();
      this.$el.removeClass('st-block--delete-active');
      $delete_el.remove();
    };

    if (this.isEmpty()) {
      onDeleteConfirm.call(this, new Event('click'));
      return;
    }

    this.$inner.append(_.template(delete_template));
    this.$el.addClass('st-block--delete-active');

    var $delete_el = this.$inner.find('.st-block__ui-delete-controls');

    this.$inner.on('click', '.st-block-ui-btn--confirm-delete',
                   onDeleteConfirm.bind(this))
                   .on('click', '.st-block-ui-btn--deny-delete',
                       onDeleteDeny.bind(this));
  },

  beforeLoadingData: function() {
    this.loading();

    if(this.mixinsRequireInputs) {
      this.$editor.show();
      this.$inputs.hide();
    }

    SimpleBlock.fn.beforeLoadingData.call(this);

    this.ready();
  },

  execTextBlockCommand: function(cmdName) {
    if (_.isUndefined(this._scribe)) {
      throw "No Scribe instance found to send a command to";
    }
    var cmd = this._scribe.getCommand(cmdName);
    this._scribe.el.focus();
    cmd.execute();
  },

  queryTextBlockCommandState: function(cmdName) {
    if (_.isUndefined(this._scribe)) {
      throw "No Scribe instance found to query command";
    }
    var cmd = this._scribe.getCommand(cmdName),
        sel = new this._scribe.api.Selection();
    return sel.range && cmd.queryState();
  },

  _handleContentPaste: function(ev) {
    setTimeout(this.onContentPasted.bind(this, ev, $(ev.currentTarget)), 0);
  },

  _getBlockClass: function() {
    return 'st-block--' + this.className;
  },

  /*
   * Init functions for adding functionality
   */

  _initUIComponents: function() {

    var positioner = new BlockPositioner(this.$el, this.mediator);

    this._withUIComponent(positioner, '.st-block-ui-btn--reorder',
                          positioner.toggle);

    this._withUIComponent(new BlockReorder(this.$el, this.mediator));

    this._withUIComponent(new BlockDeletion(), '.st-block-ui-btn--delete',
                          this.onDeleteClick);

    this.onFocus();
    this.onBlur();
  },

  _initFormatting: function() {

    // Enable formatting keyboard input
    var block = this;

    if (!this.options.formatBar) {
      return;
    }

    this.options.formatBar.commands.forEach(function(cmd) {
      if (_.isUndefined(cmd.keyCode)) {
        return;
      }

      var ctrlDown = false;

      block.$el
        .on('keyup','.st-text-block', function(ev) {
          if(ev.which === 17 || ev.which === 224 || ev.which === 91) {
            ctrlDown = false;
          }
        })
        .on('keydown','.st-text-block', {formatter: cmd}, function(ev) {
          if(ev.which === 17 || ev.which === 224 || ev.which === 91) {
            ctrlDown = true;
          }

          if(ev.which === ev.data.formatter.keyCode && ctrlDown) {
            ev.preventDefault();
            block.execTextBlockCommand(ev.data.formatter.cmd);
          }
        });
    });
  },

  _initTextBlocks: function() {
    this.getTextBlock()
        .bind('keyup', this.getSelectionForFormatter)
        .bind('mouseup', this.getSelectionForFormatter)
        .bind('DOMNodeInserted', this.clearInsertedStyles);

    var textBlock = this.getTextBlock().get(0);
    if (!_.isUndefined(textBlock) && _.isUndefined(this._scribe)) {

      var scribeConfig = {debug: config.scribeDebug};
      if (_.isObject(this.scribeOptions)) {
        scribeConfig = Object.assign(scribeConfig, this.scribeOptions);
      }

      this._scribe = new Scribe(textBlock, scribeConfig);

      this._scribe.use(scribePluginFormatterPlainTextConvertNewLinesToHTML());
      this._scribe.use(scribePluginLinkPromptCommand());

      if (_.isFunction(this.configureScribe)) {
        this.configureScribe.call(this, this._scribe);
      }
    }
  },

  getSelectionForFormatter: function() {
    var block = this;
    setTimeout(function() {
      var selection = window.getSelection(),
          selectionStr = selection.toString().trim(),
          en = 'formatter:' + ((selectionStr === '') ? 'hide' : 'position');

      block.mediator.trigger(en, block);
      EventBus.trigger(en, block);
    }, 1);
  },

  clearInsertedStyles: function(e) {
    var target = e.target;
    target.removeAttribute('style'); // Hacky fix for Chrome.
  },

  hasTextBlock: function() {
    return this.getTextBlock().length > 0;
  },

  getTextBlock: function() {
    if (_.isUndefined(this.text_block)) {
      this.text_block = this.$('.st-text-block');
    }

    return this.text_block;
  },

  getTextBlockHTML: function() {
    return this._scribe.getHTML();
  },

  setTextBlockHTML: function(html) {
    return this._scribe.setContent(html);
  },

  isEmpty: function() {
    return _.isEmpty(this.getBlockData());
  }

});

Block.extend = require('./helpers/extend'); // Allow our Block to be extended.

module.exports = Block;

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./block-deletion":140,"./block-positioner":142,"./block-reorder":143,"./block-validations":145,"./block_mixins":151,"./config":162,"./event-bus":165,"./helpers/extend":175,"./lodash":178,"./simple-block":181,"./utils":184,"scribe-editor":132,"scribe-plugin-formatter-plain-text-convert-new-lines-to-html":135,"scribe-plugin-link-prompt-command":136,"spin.js":137}],147:[function(require,module,exports){
"use strict";

var utils = require('../utils');

module.exports = {

  mixinName: "Ajaxable",

  ajaxable: true,

  initializeAjaxable: function(){
    this._queued = [];
  },

  addQueuedItem: function(name, deferred) {
    utils.log("Adding queued item for " + this.blockID + " called " + name);

    this._queued.push({ name: name, deferred: deferred });
  },

  removeQueuedItem: function(name) {
    utils.log("Removing queued item for " + this.blockID + " called " + name);

    this._queued = this._queued.filter(function(queued) {
      return queued.name !== name;
    });
  },

  hasItemsInQueue: function() {
    return this._queued.length > 0;
  },

  resolveAllInQueue: function() {
    this._queued.forEach(function(item){
      utils.log("Aborting queued request: " + item.name);
      item.deferred.abort();
    }, this);
  }

};

},{"../utils":184}],148:[function(require,module,exports){
(function (global){
"use strict";

var $ = (typeof window !== "undefined" ? window.$ : typeof global !== "undefined" ? global.$ : null);

var utils = require('../utils');

module.exports = {

  mixinName: "Controllable",

  initializeControllable: function() {
    utils.log("Adding controllable to block " + this.blockID);
    this.$control_ui = $('<div>', {'class': 'st-block__control-ui'});
    Object.keys(this.controls).forEach(
      function(cmd) {
        // Bind configured handler to current block context
        this.addUiControl(cmd, this.controls[cmd].bind(this));
      },
      this
    );
    this.$inner.append(this.$control_ui);
  },

  getControlTemplate: function(cmd) {
    return $("<a>",
      { 'data-icon': cmd,
        'class': 'st-icon st-block-control-ui-btn st-block-control-ui-btn--' + cmd
      });
  },

  addUiControl: function(cmd, handler) {
    this.$control_ui.append(this.getControlTemplate(cmd));
    this.$control_ui.on('click', '.st-block-control-ui-btn--' + cmd, handler);
  }
};

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../utils":184}],149:[function(require,module,exports){
(function (global){
"use strict";

/* Adds drop functionaltiy to this block */

var _ = require('../lodash');
var $ = (typeof window !== "undefined" ? window.$ : typeof global !== "undefined" ? global.$ : null);
var config = require('../config');
var utils = require('../utils');

var EventBus = require('../event-bus');

module.exports = {

  mixinName: "Droppable",
  valid_drop_file_types: ['File', 'Files', 'text/plain', 'text/uri-list'],
  requireInputs: true,

  initializeDroppable: function() {
    utils.log("Adding droppable to block " + this.blockID);

    this.drop_options = Object.assign({}, config.defaults.Block.drop_options, this.drop_options);

    var drop_html = $(_.template(this.drop_options.html,
                                 { block: this, _: _ }));

    this.$editor.hide();
    this.$inputs.append(drop_html);
    this.$dropzone = drop_html;

    // Bind our drop event
    this.$dropzone.dropArea()
                  .bind('drop', this._handleDrop.bind(this));

    this.$inner.addClass('st-block__inner--droppable');
  },

  _handleDrop: function(e) {
    e.preventDefault();

    e = e.originalEvent;

    var el = $(e.target),
        types = e.dataTransfer.types;

    el.removeClass('st-dropzone--dragover');

    /*
      Check the type we just received,
      delegate it away to our blockTypes to process
    */

    if (types &&
        types.some(function(type) {
                     return this.valid_drop_file_types.includes(type);
                   }, this)) {
      this.onDrop(e.dataTransfer);
    }

    EventBus.trigger('block:content:dropped', this.blockID);
  }

};

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../config":162,"../event-bus":165,"../lodash":178,"../utils":184}],150:[function(require,module,exports){
(function (global){
"use strict";

var _ = require('../lodash');
var $ = (typeof window !== "undefined" ? window.$ : typeof global !== "undefined" ? global.$ : null);

module.exports = {

  mixinName: "Fetchable",

  initializeFetchable: function(){
    this.withMixin(require('./ajaxable'));
  },

  fetch: function(options, success, failure){
    var uid = _.uniqueId(this.blockID + "_fetch"),
        xhr = $.ajax(options);

    this.resetMessages();
    this.addQueuedItem(uid, xhr);

    if(!_.isUndefined(success)) {
      xhr.done(success.bind(this));
    }

    if(!_.isUndefined(failure)) {
      xhr.fail(failure.bind(this));
    }

    xhr.always(this.removeQueuedItem.bind(this, uid));

    return xhr;
  }

};

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../lodash":178,"./ajaxable":147}],151:[function(require,module,exports){
"use strict";

module.exports = {
  Ajaxable: require('./ajaxable.js'),
  Controllable: require('./controllable.js'),
  Droppable: require('./droppable.js'),
  Fetchable: require('./fetchable.js'),
  Pastable: require('./pastable.js'),
  Uploadable: require('./uploadable.js'),
};

},{"./ajaxable.js":147,"./controllable.js":148,"./droppable.js":149,"./fetchable.js":150,"./pastable.js":152,"./uploadable.js":153}],152:[function(require,module,exports){
(function (global){
"use strict";

var _ = require('../lodash');
var $ = (typeof window !== "undefined" ? window.$ : typeof global !== "undefined" ? global.$ : null);
var config = require('../config');
var utils = require('../utils');

module.exports = {

  mixinName: "Pastable",
  requireInputs: true,

  initializePastable: function() {
    utils.log("Adding pastable to block " + this.blockID);

    this.paste_options = Object.assign(
      {}, config.defaults.Block.paste_options, this.paste_options);
    this.$inputs.append(_.template(this.paste_options.html, this));

    this.$('.st-paste-block')
      .bind('click', function(){ $(this).select(); })
      .bind('paste', this._handleContentPaste)
      .bind('submit', this._handleContentPaste);
  }

};

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../config":162,"../lodash":178,"../utils":184}],153:[function(require,module,exports){
"use strict";

var _ = require('../lodash');
var config = require('../config');
var utils = require('../utils');

var fileUploader = require('../extensions/file-uploader');

module.exports = {

  mixinName: "Uploadable",

  uploadsCount: 0,
  requireInputs: true,

  initializeUploadable: function() {
    utils.log("Adding uploadable to block " + this.blockID);
    this.withMixin(require('./ajaxable'));

    this.upload_options = Object.assign({}, config.defaults.Block.upload_options, this.upload_options);
    this.$inputs.append(_.template(this.upload_options.html, this));
  },

  uploader: function(file, success, failure){
    return fileUploader(this, file, success, failure);
  }

};

},{"../config":162,"../extensions/file-uploader":168,"../lodash":178,"../utils":184,"./ajaxable":147}],154:[function(require,module,exports){
"use strict";

/*
  Heading Block
*/

var Block = require('../block');
var stToHTML = require('../to-html');

module.exports = Block.extend({

  type: 'Heading',

  title: function(){ return i18n.t('blocks:heading:title'); },

  editorHTML: '<div class="st-required st-text-block st-text-block--heading" contenteditable="true"></div>',

  scribeOptions: { allowBlockElements: false },

  icon_name: 'heading',

  loadData: function(data){
    if (this.options.convertFromMarkdown && !data.isHtml) {
      this.setTextBlockHTML(stToHTML(data.text, this.type));
    } else {
      this.setTextBlockHTML(data.text);
    }
  }
});

},{"../block":146,"../to-html":182}],155:[function(require,module,exports){
(function (global){
"use strict";

var $ = (typeof window !== "undefined" ? window.$ : typeof global !== "undefined" ? global.$ : null);
var Block = require('../block');

module.exports = Block.extend({

  type: "image",
  title: function() { return i18n.t('blocks:image:title'); },

  droppable: true,
  uploadable: true,

  icon_name: 'image',

  loadData: function(data){
    // Create our image tag
    this.$editor.html($('<img>', { src: data.file.url }));
  },

  onBlockRender: function(){
    /* Setup the upload button */
    this.$inputs.find('button').bind('click', function(ev){ ev.preventDefault(); });
    this.$inputs.find('input').on('change', (function(ev) {
      this.onDrop(ev.currentTarget);
    }).bind(this));
  },

  onDrop: function(transferData){
    var file = transferData.files[0],
        urlAPI = (typeof URL !== "undefined") ? URL : (typeof webkitURL !== "undefined") ? webkitURL : null;

    // Handle one upload at a time
    if (/image/.test(file.type)) {
      this.loading();
      // Show this image on here
      this.$inputs.hide();
      this.$editor.html($('<img>', { src: urlAPI.createObjectURL(file) })).show();

      this.uploader(
        file,
        function(data) {
          this.setData(data);
          this.ready();
        },
        function(error) {
          this.addMessage(i18n.t('blocks:image:upload_error'));
          this.ready();
        }
      );
    }
  }
});

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../block":146}],156:[function(require,module,exports){
"use strict";

module.exports = {
  Text: require('./text'),
  Quote: require('./quote'),
  Image: require('./image'),
  Heading: require('./heading'),
  List: require('./list'),
  Tweet: require('./tweet'),
  Video: require('./video'),
};

},{"./heading":154,"./image":155,"./list":157,"./quote":158,"./text":159,"./tweet":160,"./video":161}],157:[function(require,module,exports){
"use strict";

var _ = require('../lodash');

var Block = require('../block');
var stToHTML = require('../to-html');

var template = '<div class="st-text-block st-required" contenteditable="true"><ul><li></li></ul></div>';

module.exports = Block.extend({

  type: 'list',

  title: function() { return i18n.t('blocks:list:title'); },

  icon_name: 'list',

  editorHTML: function() {
    return _.template(template, this);
  },

  loadData: function(data){
    if (this.options.convertFromMarkdown && !data.isHtml) {
      this.setTextBlockHTML("<ul>" + stToHTML(data.text, this.type) + "</ul>");
    } else {
      this.setTextBlockHTML(data.text);
    }
  },

  onBlockRender: function() {
    this.checkForList = this.checkForList.bind(this);
    this.getTextBlock().on('click keyup', this.checkForList);
    this.focus();
  },

  checkForList: function() {
    if (this.$('ul').length === 0) {
      document.execCommand("insertUnorderedList", false, false);
    }
  },

  toHTML: function(html) {
    html = html.replace(/^ - (.+)$/mg,"<li>$1</li>")
               .replace(/\n/mg, "");

    return html;
  },

  onContentPasted: function(event, target) {
    this.$('ul').html(
      this.pastedMarkdownToHTML(target[0].innerHTML));
    this.getTextBlock().caretToEnd();
  },

  isEmpty: function() {
    return _.isEmpty(this.getBlockData().text);
  }

});

},{"../block":146,"../lodash":178,"../to-html":182}],158:[function(require,module,exports){
"use strict";

/*
  Block Quote
*/

var _ = require('../lodash');

var Block = require('../block');
var stToHTML = require('../to-html');

var template = _.template([
  '<blockquote class="st-required st-text-block" contenteditable="true"></blockquote>',
  '<label class="st-input-label"> <%= i18n.t("blocks:quote:credit_field") %></label>',
  '<input maxlength="140" name="cite" placeholder="<%= i18n.t("blocks:quote:credit_field") %>"',
  ' class="st-input-string st-required js-cite-input" type="text" />'
].join("\n"));

module.exports = Block.extend({

  type: "quote",

  title: function() { return i18n.t('blocks:quote:title'); },

  icon_name: 'quote',

  editorHTML: function() {
    return template(this);
  },

  loadData: function(data){
    if (this.options.convertFromMarkdown && !data.isHtml) {
      this.setTextBlockHTML(stToHTML(data.text, this.type));
    } else {
      this.setTextBlockHTML(data.text);
    }

    this.$('.js-cite-input').val(data.cite);
  }
});

},{"../block":146,"../lodash":178,"../to-html":182}],159:[function(require,module,exports){
"use strict";

/*
  Text Block
*/

var Block = require('../block');
var stToHTML = require('../to-html');

module.exports = Block.extend({

  type: "text",

  title: function() { return i18n.t('blocks:text:title'); },

  editorHTML: '<div class="st-required st-text-block" contenteditable="true"></div>',

  icon_name: 'text',

  loadData: function(data){
    if (this.options.convertFromMarkdown && !data.isHtml) {
      this.setTextBlockHTML(stToHTML(data.text, this.type));
    } else {
      this.setTextBlockHTML(data.text);
    }
  },
});

},{"../block":146,"../to-html":182}],160:[function(require,module,exports){
(function (global){
"use strict";

var _ = require('../lodash');
var $ = (typeof window !== "undefined" ? window.$ : typeof global !== "undefined" ? global.$ : null);
var utils = require('../utils');

var Block = require('../block');

var tweet_template = _.template([
  "<blockquote class='twitter-tweet' align='center'>",
  "<p><%= text %></p>",
  "&mdash; <%= user.name %> (@<%= user.screen_name %>)",
  "<a href='<%= status_url %>' data-datetime='<%= created_at %>'><%= created_at %></a>",
  "</blockquote>",
  '<script src="//platform.twitter.com/widgets.js" charset="utf-8"></script>'
].join("\n"));

module.exports = Block.extend({

  type: "tweet",
  droppable: true,
  pastable: true,
  fetchable: true,

  drop_options: {
    re_render_on_reorder: true
  },

  title: function(){ return i18n.t('blocks:tweet:title'); },

  fetchUrl: function(tweetID) {
    return "/tweets/?tweet_id=" + tweetID;
  },

  icon_name: 'twitter',

  loadData: function(data) {
    if (_.isUndefined(data.status_url)) { data.status_url = ''; }
    this.$inner.find('iframe').remove();
    this.$inner.prepend(tweet_template(data));
  },

  onContentPasted: function(event){
    // Content pasted. Delegate to the drop parse method
    var input = $(event.target),
    val = input.val();

    // Pass this to the same handler as onDrop
    this.handleTwitterDropPaste(val);
  },

  handleTwitterDropPaste: function(url){
    if (!this.validTweetUrl(url)) {
      utils.log("Invalid Tweet URL");
      return;
    }

    // Twitter status
    var tweetID = url.match(/[^\/]+$/);
    if (!_.isEmpty(tweetID)) {
      this.loading();
      tweetID = tweetID[0];

      var ajaxOptions = {
        url: this.fetchUrl(tweetID),
        dataType: "json"
      };

      this.fetch(ajaxOptions, this.onTweetSuccess, this.onTweetFail);
    }
  },

  validTweetUrl: function(url) {
    return (utils.isURI(url) &&
            url.indexOf("twitter") !== -1 &&
            url.indexOf("status") !== -1);
  },

  onTweetSuccess: function(data) {
    // Parse the twitter object into something a bit slimmer..
    var obj = {
      user: {
        profile_image_url: data.user.profile_image_url,
        profile_image_url_https: data.user.profile_image_url_https,
        screen_name: data.user.screen_name,
        name: data.user.name
      },
      id: data.id_str,
      text: data.text,
      created_at: data.created_at,
      entities: data.entities,
      status_url: "https://twitter.com/" + data.user.screen_name + "/status/" + data.id_str
    };

    this.setAndLoadData(obj);
    this.ready();
  },

  onTweetFail: function() {
    this.addMessage(i18n.t("blocks:tweet:fetch_error"));
    this.ready();
  },

  onDrop: function(transferData){
    var url = transferData.getData('text/plain');
    this.handleTwitterDropPaste(url);
  }
});

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../block":146,"../lodash":178,"../utils":184}],161:[function(require,module,exports){
"use strict";

var _ = require('../lodash');
var utils = require('../utils');
var Block = require('../block');

module.exports = Block.extend({

  // more providers at https://gist.github.com/jeffling/a9629ae28e076785a14f
  providers: {
    vimeo: {
      regex: /(?:http[s]?:\/\/)?(?:www.)?vimeo.com\/(.+)/,
      html: "<iframe src=\"<%= protocol %>//player.vimeo.com/video/<%= remote_id %>?title=0&byline=0\" width=\"580\" height=\"320\" frameborder=\"0\"></iframe>"
    },
    youtube: {
      regex: /^.*(?:youtu.be\/|v\/|u\/\w\/|embed\/|watch\?v=|\&v=)([^#\&\?]*).*/,
      html: "<iframe src=\"<%= protocol %>//www.youtube.com/embed/<%= remote_id %>\" width=\"580\" height=\"320\" frameborder=\"0\" allowfullscreen></iframe>"
    }
  },

  type: 'video',
  title: function() { return i18n.t('blocks:video:title'); },

  droppable: true,
  pastable: true,

  icon_name: 'video',

  loadData: function(data){
    if (!this.providers.hasOwnProperty(data.source)) { return; }

    var source = this.providers[data.source];

    var protocol = window.location.protocol === "file:" ? 
      "http:" : window.location.protocol;

    var aspectRatioClass = source.square ?
      'with-square-media' : 'with-sixteen-by-nine-media';

    this.$editor
      .addClass('st-block__editor--' + aspectRatioClass)
      .html(_.template(source.html, {
        protocol: protocol,
        remote_id: data.remote_id,
        width: this.$editor.width() // for videos like vine
      }));
  },

  onContentPasted: function(event){
    this.handleDropPaste(event.target.value);
  },

  matchVideoProvider: function(provider, index, url) {
    var match = provider.regex.exec(url);
    if(match == null || _.isUndefined(match[1])) { return {}; }

    return {
      source: index,
      remote_id: match[1]
    };
  },

  handleDropPaste: function(url){
    if (!utils.isURI(url)) { return; }

    for(var key in this.providers) { 
      if (!this.providers.hasOwnProperty(key)) { continue; }
      this.setAndLoadData(
        this.matchVideoProvider(this.providers[key], key, url)
      );
    }
  },

  onDrop: function(transferData){
    var url = transferData.getData('text/plain');
    this.handleDropPaste(url);
  }
});


},{"../block":146,"../lodash":178,"../utils":184}],162:[function(require,module,exports){
"use strict";

var drop_options = {
  html: ['<div class="st-block__dropzone">',
    '<span class="st-icon"><%= _.result(block, "icon_name") %></span>',
    '<p><%= i18n.t("general:drop", { block: "<span>" + _.result(block, "title") + "</span>" }) %>',
    '</p></div>'].join('\n'),
    re_render_on_reorder: false
};

var paste_options = {
  html: ['<input type="text" placeholder="<%= i18n.t("general:paste") %>"',
    ' class="st-block__paste-input st-paste-block">'].join('')
};

var upload_options = {
  html: [
    '<div class="st-block__upload-container">',
    '<input type="file" type="st-file-upload">',
    '<button class="st-upload-btn"><%= i18n.t("general:upload") %></button>',
    '</div>'
  ].join('\n')
};

module.exports = {
  debug: false,
  scribeDebug: false,
  skipValidation: false,
  version: "0.4.0",
  language: "en",

  instances: [],

  defaults: {
    defaultType: false,
    spinner: {
      className: 'st-spinner',
      lines: 9,
      length: 8,
      width: 3,
      radius: 6,
      color: '#000',
      speed: 1.4,
      trail: 57,
      shadow: false,
      left: '50%',
      top: '50%'
    },
    Block: {
      drop_options: drop_options,
      paste_options: paste_options,
      upload_options: upload_options,
    },
    blockLimit: 0,
    blockTypeLimits: {},
    required: [],
    uploadUrl: '/attachments',
    baseImageUrl: '/sir-trevor-uploads/',
    errorsContainer: undefined,
    convertFromMarkdown: true,
    formatBarContainer: document.body,
    formatBar: {
      commands: [
        {
          name: "Bold",
          title: "bold",
          cmd: "bold",
          keyCode: 66,
          text : "B"
        },
        {
          name: "Italic",
          title: "italic",
          cmd: "italic",
          keyCode: 73,
          text : "i"
        },
        {
          name: "Link",
          title: "link",
          iconName: "link",
          cmd: "linkPrompt",
          text : "link",
        },
        {
          name: "Unlink",
          title: "unlink",
          iconName: "link",
          cmd: "unlink",
          text : "link",
        },
      ],
    },
  }
};

},{}],163:[function(require,module,exports){
(function (global){
"use strict";

/*
 * Sir Trevor Editor
 * --
 * Represents one Sir Trevor editor instance (with multiple blocks)
 * Each block references this instance.
 * BlockTypes are global however.
 */

var _ = require('./lodash');
var $ = (typeof window !== "undefined" ? window.$ : typeof global !== "undefined" ? global.$ : null);
var config = require('./config');
var utils = require('./utils');

var Events = require('./events');
var EventBus = require('./event-bus');
var FormEvents = require('./form-events');
var BlockControls = require('./block-controls');
var BlockManager = require('./block-manager');
var FloatingBlockControls = require('./floating-block-controls');
var FormatBar = require('./format-bar');
var EditorStore = require('./extensions/editor-store');
var ErrorHandler = require('./error-handler');

var Editor = function(options) {
  this.initialize(options);
};

Object.assign(Editor.prototype, require('./function-bind'), require('./events'), {

  bound: ['onFormSubmit', 'hideAllTheThings', 'changeBlockPosition',
    'removeBlockDragOver', 'renderBlock', 'resetBlockControls',
    'blockLimitReached'],

  events: {
    'block:reorder:dragend': 'removeBlockDragOver',
    'block:reorder:dropped': 'removeBlockDragOver',
    'block:content:dropped': 'removeBlockDragOver'
  },

  initialize: function(options) {
    utils.log("Init SirTrevor.Editor");

    this.options = Object.assign({}, config.defaults, options || {});
    this.ID = _.uniqueId('st-editor-');

    if (!this._ensureAndSetElements()) { return false; }

    if(!_.isUndefined(this.options.onEditorRender) &&
       _.isFunction(this.options.onEditorRender)) {
      this.onEditorRender = this.options.onEditorRender;
    }

    // Mediated events for *this* Editor instance
    this.mediator = Object.assign({}, Events);

    this._bindFunctions();

    config.instances.push(this);

    this.build();

    FormEvents.bindFormSubmit(this.$form);
  },

  /*
   * Build the Editor instance.
   * Check to see if we've been passed JSON already, and if not try and
   * create a default block.
   * If we have JSON then we need to build all of our blocks from this.
   */
  build: function() {
    this.$el.hide();

    this.errorHandler = new ErrorHandler(this.$outer, this.mediator, this.options.errorsContainer);
    this.store = new EditorStore(this.$el.val(), this.mediator);
    this.block_manager = new BlockManager(this.options, this.ID, this.mediator);
    this.block_controls = new BlockControls(this.block_manager.blockTypes, this.mediator);
    this.fl_block_controls = new FloatingBlockControls(this.$wrapper, this.ID, this.mediator);
    this.formatBar = new FormatBar(this.options.formatBar, this.mediator);

    this.mediator.on('block:changePosition', this.changeBlockPosition);
    this.mediator.on('block-controls:reset', this.resetBlockControls);
    this.mediator.on('block:limitReached', this.blockLimitReached);
    this.mediator.on('block:render', this.renderBlock);

    this.dataStore = "Please use store.retrieve();";

    this._setEvents();

    this.$wrapper.prepend(this.fl_block_controls.render().$el);
    $(this.options.formatBarContainer).append(this.formatBar.render().$el);
    this.$outer.append(this.block_controls.render().$el);

    $(window).bind('click', this.hideAllTheThings);

    this.createBlocks();
    this.$wrapper.addClass('st-ready');

    if(!_.isUndefined(this.onEditorRender)) {
      this.onEditorRender();
    }
  },

  createBlocks: function() {
    var store = this.store.retrieve();

    if (store.data.length > 0) {
      store.data.forEach(function(block) {
        this.mediator.trigger('block:create', block.type, block.data);
      }, this);
    } else if (this.options.defaultType !== false) {
      this.mediator.trigger('block:create', this.options.defaultType, {});
    }
  },

  destroy: function() {
    // Destroy the rendered sub views
    this.formatBar.destroy();
    this.fl_block_controls.destroy();
    this.block_controls.destroy();

    // Destroy all blocks
    this.block_manager.blocks.forEach(function(block) {
      this.mediator.trigger('block:remove', block.blockID);
    }, this);

    // Stop listening to events
    this.mediator.stopListening();
    this.stopListening();

    // Remove instance
    config.instances = config.instances.filter(function(instance) {
      return instance.ID !== this.ID;
    }, this);

    // Clear the store
    this.store.reset();
    this.$outer.replaceWith(this.$el.detach());
  },

  reinitialize: function(options) {
    this.destroy();
    this.initialize(options || this.options);
  },

  resetBlockControls: function() {
    this.block_controls.renderInContainer(this.$wrapper);
    this.block_controls.hide();
  },

  blockLimitReached: function(toggle) {
    this.$wrapper.toggleClass('st--block-limit-reached', toggle);
  },

  _setEvents: function() {
    Object.keys(this.events).forEach(function(type) {
      EventBus.on(type, this[this.events[type]], this);
    }, this);
  },

  hideAllTheThings: function(e) {
    this.block_controls.hide();
    this.formatBar.hide();
  },

  store: function(method, options){
    utils.log("The store method has been removed, please call store[methodName]");
    return this.store[method].call(this, options || {});
  },

  renderBlock: function(block) {
    this._renderInPosition(block.render().$el);
    this.hideAllTheThings();

    block.trigger("onRender");
  },

  removeBlockDragOver: function() {
    this.$outer.find('.st-drag-over').removeClass('st-drag-over');
  },

  changeBlockPosition: function($block, selectedPosition) {
    selectedPosition = selectedPosition - 1;

    var blockPosition = this.getBlockPosition($block),
    $blockBy = this.$wrapper.find('.st-block').eq(selectedPosition);

    var where = (blockPosition > selectedPosition) ? "Before" : "After";

    if($blockBy && $blockBy.attr('id') !== $block.attr('id')) {
      this.hideAllTheThings();
      $block["insert" + where]($blockBy);
    }
  },

  _renderInPosition: function(block) {
    if (this.block_controls.currentContainer) {
      this.block_controls.currentContainer.after(block);
    } else {
      this.$wrapper.append(block);
    }
  },

  validateAndSaveBlock: function(block, shouldValidate) {
    if ((!config.skipValidation || shouldValidate) && !block.valid()) {
      this.mediator.trigger('errors:add', { text: _.result(block, 'validationFailMsg') });
      utils.log("Block " + block.blockID + " failed validation");
      return;
    }

    var blockData = block.getData();
    utils.log("Adding data for block " + block.blockID + " to block store:",
              blockData);
    this.store.addData(blockData);
  },

  /*
   * Handle a form submission of this Editor instance.
   * Validate all of our blocks, and serialise all data onto the JSON objects
   */
  onFormSubmit: function(shouldValidate) {
    // if undefined or null or anything other than false - treat as true
    shouldValidate = (shouldValidate === false) ? false : true;

    utils.log("Handling form submission for Editor " + this.ID);

    this.mediator.trigger('errors:reset');
    this.store.reset();

    this.validateBlocks(shouldValidate);
    this.block_manager.validateBlockTypesExist(shouldValidate);

    this.mediator.trigger('errors:render');
    this.$el.val(this.store.toString());

    return this.errorHandler.errors.length;
  },

  validateBlocks: function(shouldValidate) {
    var self = this;
    this.$wrapper.find('.st-block').each(function(idx, block) {
      var _block = self.block_manager.findBlockById($(block).attr('id'));
      if (!_.isUndefined(_block)) {
        self.validateAndSaveBlock(_block, shouldValidate);
      }
    });
  },

  findBlockById: function(block_id) {
    return this.block_manager.findBlockById(block_id);
  },

  getBlocksByType: function(block_type) {
    return this.block_manager.getBlocksByType(block_type);
  },

  getBlocksByIDs: function(block_ids) {
    return this.block_manager.getBlocksByIDs(block_ids);
  },

  getBlockPosition: function($block) {
    return this.$wrapper.find('.st-block').index($block);
  },

  _ensureAndSetElements: function() {
    if(_.isUndefined(this.options.el) || _.isEmpty(this.options.el)) {
      utils.log("You must provide an el");
      return false;
    }

    this.$el = this.options.el;
    this.el = this.options.el[0];
    this.$form = this.$el.parents('form');

    var $outer = $("<div>").attr({ 'id': this.ID, 'class': 'st-outer', 'dropzone': 'copy link move' });
    var $wrapper = $("<div>").attr({ 'class': 'st-blocks' });

    // Wrap our element in lots of containers *eww*
    this.$el.wrap($outer).wrap($wrapper);

    this.$outer = this.$form.find('#' + this.ID);
    this.$wrapper = this.$outer.find('.st-blocks');

    return true;
  }

});

module.exports = Editor;



}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./block-controls":139,"./block-manager":141,"./config":162,"./error-handler":164,"./event-bus":165,"./events":166,"./extensions/editor-store":167,"./floating-block-controls":170,"./form-events":171,"./format-bar":172,"./function-bind":173,"./lodash":178,"./utils":184}],164:[function(require,module,exports){
(function (global){
"use strict";

var _ = require('./lodash');
var $ = (typeof window !== "undefined" ? window.$ : typeof global !== "undefined" ? global.$ : null);

var ErrorHandler = function($wrapper, mediator, container) {
  this.$wrapper = $wrapper;
  this.mediator = mediator;
  this.$el = container;

  if (_.isUndefined(this.$el)) {
    this._ensureElement();
    this.$wrapper.prepend(this.$el);
  }

  this.$el.hide();
  this._bindFunctions();
  this._bindMediatedEvents();

  this.initialize();
};

Object.assign(ErrorHandler.prototype, require('./function-bind'), require('./mediated-events'), require('./renderable'), {

  errors: [],
  className: "st-errors",
  eventNamespace: 'errors',

  mediatedEvents: {
    'reset': 'reset',
    'add': 'addMessage',
    'render': 'render'
  },

  initialize: function() {
    var $list = $("<ul>");
    this.$el.append("<p>" + i18n.t("errors:title") + "</p>")
    .append($list);
    this.$list = $list;
  },

  render: function() {
    if (this.errors.length === 0) { return false; }
    this.errors.forEach(this.createErrorItem, this);
    this.$el.show();
  },

  createErrorItem: function(error) {
    var $error = $("<li>", { class: "st-errors__msg", html: error.text });
    this.$list.append($error);
  },

  addMessage: function(error) {
    this.errors.push(error);
  },

  reset: function() {
    if (this.errors.length === 0) { return false; }
    this.errors = [];
    this.$list.html('');
    this.$el.hide();
  }

});

module.exports = ErrorHandler;


}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./function-bind":173,"./lodash":178,"./mediated-events":179,"./renderable":180}],165:[function(require,module,exports){
"use strict";

module.exports = Object.assign({}, require('./events'));

},{"./events":166}],166:[function(require,module,exports){
"use strict";

module.exports = require('eventablejs');

},{"eventablejs":3}],167:[function(require,module,exports){
"use strict";

/*
 * Sir Trevor Editor Store
 * By default we store the complete data on the instances $el
 * We can easily extend this and store it on some server or something
 */

var _ = require('../lodash');
var utils = require('../utils');


var EditorStore = function(data, mediator) {
  this.mediator = mediator;
  this.initialize(data ? data.trim() : '');
};

Object.assign(EditorStore.prototype, {

  initialize: function(data) {
    this.store = this._parseData(data) || { data: [] };
  },

  retrieve: function() {
    return this.store;
  },

  toString: function(space) {
    return JSON.stringify(this.store, undefined, space);
  },

  reset: function() {
    utils.log("Resetting the EditorStore");
    this.store = { data: [] };
  },

  addData: function(data) {
    this.store.data.push(data);
    return this.store;
  },

  _parseData: function(data) {
    var result;

    if (data.length === 0) { return result; }

    try {
      // Ensure the JSON string has a data element that's an array
      var jsonStr = JSON.parse(data);
      if (!_.isUndefined(jsonStr.data)) {
        result = jsonStr;
      }
    } catch(e) {
      this.mediator.trigger(
        'errors:add',
        { text: i18n.t("errors:load_fail") });

      this.mediator.trigger('errors:render');

      console.log('Sorry there has been a problem with parsing the JSON');
      console.log(e);
    }

    return result;
  }

});

module.exports = EditorStore;

},{"../lodash":178,"../utils":184}],168:[function(require,module,exports){
(function (global){
"use strict";

/*
*   Sir Trevor Uploader
*   Generic Upload implementation that can be extended for blocks
*/

var _ = require('../lodash');
var $ = (typeof window !== "undefined" ? window.$ : typeof global !== "undefined" ? global.$ : null);
var config = require('../config');
var utils = require('../utils');

var EventBus = require('../event-bus');

module.exports = function(block, file, success, error) {

  EventBus.trigger('onUploadStart');

  var uid  = [block.blockID, (new Date()).getTime(), 'raw'].join('-');
  var data = new FormData();

  data.append('attachment[name]', file.name);
  data.append('attachment[file]', file);
  data.append('attachment[uid]', uid);

  block.resetMessages();

  var callbackSuccess = function(data) {
    utils.log('Upload callback called');
    EventBus.trigger('onUploadStop');

    if (!_.isUndefined(success) && _.isFunction(success)) {
      success.apply(block, arguments);
    }
  };

  var callbackError = function(jqXHR, status, errorThrown) {
    utils.log('Upload callback error called');
    EventBus.trigger('onUploadStop');

    if (!_.isUndefined(error) && _.isFunction(error)) {
      error.call(block, status);
    }
  };

  var xhr = $.ajax({
    url: config.defaults.uploadUrl,
    data: data,
    cache: false,
    contentType: false,
    processData: false,
    dataType: 'json',
    type: 'POST'
  });

  block.addQueuedItem(uid, xhr);

  xhr.done(callbackSuccess)
     .fail(callbackError)
     .always(block.removeQueuedItem.bind(block, uid));

  return xhr;
};

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../config":162,"../event-bus":165,"../lodash":178,"../utils":184}],169:[function(require,module,exports){
(function (global){
"use strict";

/*
 * SirTrevor.Submittable
 * --
 * We need a global way of setting if the editor can and can't be submitted,
 * and a way to disable the submit button and add messages (when appropriate)
 * We also need this to be highly extensible so it can be overridden.
 * This will be triggered *by anything* so it needs to subscribe to events.
 */

var $ = (typeof window !== "undefined" ? window.$ : typeof global !== "undefined" ? global.$ : null);
var utils = require('../utils');

var EventBus = require('../event-bus');

var Submittable = function($form) {
  this.$form = $form;
  this.initialize();
};

Object.assign(Submittable.prototype, {

  initialize: function(){
    this.submitBtn = this.$form.find("input[type='submit']");

    var btnTitles = [];

    this.submitBtn.each(function(i, btn){
      btnTitles.push($(btn).attr('value'));
    });

    this.submitBtnTitles = btnTitles;
    this.canSubmit = true;
    this.globalUploadCount = 0;
    this._bindEvents();
  },

  setSubmitButton: function(e, message) {
    this.submitBtn.attr('value', message);
  },

  resetSubmitButton: function(){
    var titles = this.submitBtnTitles;
    this.submitBtn.each(function(index, item) {
      $(item).attr('value', titles[index]);
    });
  },

  onUploadStart: function(e){
    this.globalUploadCount++;
    utils.log('onUploadStart called ' + this.globalUploadCount);

    if(this.globalUploadCount === 1) {
      this._disableSubmitButton();
    }
  },

  onUploadStop: function(e) {
    this.globalUploadCount = (this.globalUploadCount <= 0) ? 0 : this.globalUploadCount - 1;

    utils.log('onUploadStop called ' + this.globalUploadCount);

    if(this.globalUploadCount === 0) {
      this._enableSubmitButton();
    }
  },

  onError: function(e){
    utils.log('onError called');
    this.canSubmit = false;
  },

  _disableSubmitButton: function(message){
    this.setSubmitButton(null, message || i18n.t("general:wait"));
    this.submitBtn
    .attr('disabled', 'disabled')
    .addClass('disabled');
  },

  _enableSubmitButton: function(){
    this.resetSubmitButton();
    this.submitBtn
    .removeAttr('disabled')
    .removeClass('disabled');
  },

  _events : {
    "disableSubmitButton" : "_disableSubmitButton",
    "enableSubmitButton"  : "_enableSubmitButton",
    "setSubmitButton"     : "setSubmitButton",
    "resetSubmitButton"   : "resetSubmitButton",
    "onError"             : "onError",
    "onUploadStart"       : "onUploadStart",
    "onUploadStop"        : "onUploadStop"
  },

  _bindEvents: function(){
    Object.keys(this._events).forEach(function(type) {
      EventBus.on(type, this[this._events[type]], this);
    }, this);
  }

});

module.exports = Submittable;


}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../event-bus":165,"../utils":184}],170:[function(require,module,exports){
(function (global){
"use strict";

/*
   SirTrevor Floating Block Controls
   --
   Draws the 'plus' between blocks
   */

var _ = require('./lodash');
var $ = (typeof window !== "undefined" ? window.$ : typeof global !== "undefined" ? global.$ : null);

var EventBus = require('./event-bus');

var FloatingBlockControls = function(wrapper, instance_id, mediator) {
  this.$wrapper = wrapper;
  this.instance_id = instance_id;
  this.mediator = mediator;

  this._ensureElement();
  this._bindFunctions();

  this.initialize();
};

Object.assign(FloatingBlockControls.prototype, require('./function-bind'), require('./renderable'), require('./events'), {

  className: "st-block-controls__top",

  attributes: function() {
    return {
      'data-icon': 'add'
    };
  },

  bound: ['handleBlockMouseOut', 'handleBlockMouseOver', 'handleBlockClick', 'onDrop'],

  initialize: function() {
    this.$el.on('click', this.handleBlockClick)
    .dropArea()
    .bind('drop', this.onDrop);

    this.$wrapper.on('mouseover', '.st-block', this.handleBlockMouseOver)
    .on('mouseout', '.st-block', this.handleBlockMouseOut)
    .on('click', '.st-block--with-plus', this.handleBlockClick);
  },

  onDrop: function(ev) {
    ev.preventDefault();

    var dropped_on = this.$el,
    item_id = ev.originalEvent.dataTransfer.getData("text/plain"),
    block = $('#' + item_id);

    if (!_.isUndefined(item_id) &&
        !_.isEmpty(block) &&
          dropped_on.attr('id') !== item_id &&
            this.instance_id === block.attr('data-instance')
       ) {
         dropped_on.after(block);
       }

       EventBus.trigger("block:reorder:dropped", item_id);
  },

  handleBlockMouseOver: function(e) {
    var block = $(e.currentTarget);

    if (!block.hasClass('st-block--with-plus')) {
      block.addClass('st-block--with-plus');
    }
  },

  handleBlockMouseOut: function(e) {
    var block = $(e.currentTarget);

    if (block.hasClass('st-block--with-plus')) {
      block.removeClass('st-block--with-plus');
    }
  },

  handleBlockClick: function(e) {
    e.stopPropagation();
    this.mediator.trigger('block-controls:render', $(e.currentTarget));
  }

});

module.exports = FloatingBlockControls;

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./event-bus":165,"./events":166,"./function-bind":173,"./lodash":178,"./renderable":180}],171:[function(require,module,exports){
"use strict";

var config = require('./config');
var utils = require('./utils');

var EventBus = require('./event-bus');
var Submittable = require('./extensions/submittable');

var formBound = false; // Flag to tell us once we've bound our submit event

var FormEvents = {
  bindFormSubmit: function(form) {
    if (!formBound) {
      // XXX: should we have a formBound and submittable per-editor?
      // telling JSHint to ignore as it'll complain we shouldn't be creating
      // a new object, but otherwise `this` won't be set in the Submittable
      // initialiser. Bit weird.
      new Submittable(form); // jshint ignore:line
      form.bind('submit', this.onFormSubmit);
      formBound = true;
    }
  },

  onBeforeSubmit: function(shouldValidate) {
    // Loop through all of our instances and do our form submits on them
    var errors = 0;
    config.instances.forEach(function(inst, i) {
      errors += inst.onFormSubmit(shouldValidate);
    });
    utils.log("Total errors: " + errors);

    return errors;
  },

  onFormSubmit: function(ev) {
    var errors = FormEvents.onBeforeSubmit();

    if(errors > 0) {
      EventBus.trigger("onError");
      ev.preventDefault();
    }
  },
};

module.exports = FormEvents;

},{"./config":162,"./event-bus":165,"./extensions/submittable":169,"./utils":184}],172:[function(require,module,exports){
(function (global){
"use strict";

/**
 * Format Bar
 * --
 * Displayed on focus on a text area.
 * Renders with all available options for the editor instance
 */

var _ = require('./lodash');
var $ = (typeof window !== "undefined" ? window.$ : typeof global !== "undefined" ? global.$ : null);

var config = require('./config');
var utils = require('./utils');

var FormatBar = function(options, mediator) {
  this.options = Object.assign({}, config.defaults.formatBar, options || {});
  this.commands = this.options.commands;
  this.mediator = mediator;

  this._ensureElement();
  this._bindFunctions();
  this._bindMediatedEvents();

  this.initialize.apply(this, arguments);
};

Object.assign(FormatBar.prototype, require('./function-bind'), require('./mediated-events'), require('./events'), require('./renderable'), {

  className: 'st-format-bar',

  bound: ["onFormatButtonClick", "renderBySelection", "hide"],

  eventNamespace: 'formatter',

  mediatedEvents: {
    'position': 'renderBySelection',
    'show': 'show',
    'hide': 'hide'
  },

  initialize: function() {
    this.$btns = [];

    this.commands.forEach(function(format) {
      var btn = $("<button>", {
        'class': 'st-format-btn st-format-btn--' + format.name + ' ' +
          (format.iconName ? 'st-icon' : ''),
        'text': format.text,
        'data-cmd': format.cmd
      });

      this.$btns.push(btn);
      btn.appendTo(this.$el);
    }, this);

    this.$b = $(document);
    this.$el.bind('click', '.st-format-btn', this.onFormatButtonClick);
  },

  hide: function() {
    this.$el.removeClass('st-format-bar--is-ready');
  },

  show: function() {
    this.$el.addClass('st-format-bar--is-ready');
  },

  remove: function(){ this.$el.remove(); },

  renderBySelection: function() {
    var selection = window.getSelection(),
        range = selection.getRangeAt(0),
        boundary = range.getBoundingClientRect(),
        coords = {},
        scrollTop = this.el.parentNode.scrollTop,
        // in case the format bar is inside a scrollable container
        leftOffset = this.el.parentNode.offsetLeft,
        topOffset = this.el.parentNode.offsetTop;

    coords.top = boundary.top + 20 + scrollTop - this.$el.height() - topOffset + 'px';
    coords.left = ((boundary.left + boundary.right) / 2) - (this.$el.width() / 2) - leftOffset + 'px';

    this.highlightSelectedButtons();
    this.show();

    this.$el.css(coords);
  },

  highlightSelectedButtons: function() {
    var block = utils.getBlockBySelection();
    this.$btns.forEach(function(btn) {
      var cmd = $(btn).data('cmd');
      btn.toggleClass("st-format-btn--is-active",
                      block.queryTextBlockCommandState(cmd));
    }, this);
  },

  onFormatButtonClick: function(ev){
    ev.stopPropagation();

    var block = utils.getBlockBySelection();
    if (_.isUndefined(block)) {
      throw "Associated block not found";
    }

    var btn = $(ev.target),
        cmd = btn.data('cmd');

    if (_.isUndefined(cmd)) {
      return false;
    }

    block.execTextBlockCommand(cmd);

    this.highlightSelectedButtons();

    return false;
  }

});

module.exports = FormatBar;

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./config":162,"./events":166,"./function-bind":173,"./lodash":178,"./mediated-events":179,"./renderable":180,"./utils":184}],173:[function(require,module,exports){
"use strict";

/* Generic function binding utility, used by lots of our classes */

module.exports = {
  bound: [],
  _bindFunctions: function(){
    this.bound.forEach(function(f) {
      this[f] = this[f].bind(this);
    }, this);
  }
};


},{}],174:[function(require,module,exports){
(function (global){
"use strict";

/*
 * Drop Area Plugin from @maccman
 * http://blog.alexmaccaw.com/svbtle-image-uploading
 * --
 * Tweaked so we use the parent class of dropzone
 */

var $ = (typeof window !== "undefined" ? window.$ : typeof global !== "undefined" ? global.$ : null);

function dragEnter(e) {
  e.preventDefault();
}

function dragOver(e) {
  e.originalEvent.dataTransfer.dropEffect = "copy";
  $(e.currentTarget).addClass('st-drag-over');
  e.preventDefault();
}

function dragLeave(e) {
  $(e.currentTarget).removeClass('st-drag-over');
  e.preventDefault();
}

$.fn.dropArea = function(){
  this.bind("dragenter", dragEnter).
    bind("dragover",  dragOver).
    bind("dragleave", dragLeave);
  return this;
};

$.fn.noDropArea = function(){
  this.unbind("dragenter").
    unbind("dragover").
    unbind("dragleave");
  return this;
};

$.fn.caretToEnd = function(){
  var range,selection;

  range = document.createRange();
  range.selectNodeContents(this[0]);
  range.collapse(false);

  selection = window.getSelection();
  selection.removeAllRanges();
  selection.addRange(range);

  return this;
};


}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],175:[function(require,module,exports){
"use strict";

/*
  Backbone Inheritence 
  --
  From: https://github.com/documentcloud/backbone/blob/master/backbone.js
  Backbone.js 0.9.2
  (c) 2010-2012 Jeremy Ashkenas, DocumentCloud Inc.
*/

module.exports = function(protoProps, staticProps) {
  var parent = this;
  var child;

  // The constructor function for the new subclass is either defined by you
  // (the "constructor" property in your `extend` definition), or defaulted
  // by us to simply call the parent's constructor.
  if (protoProps && protoProps.hasOwnProperty('constructor')) {
    child = protoProps.constructor;
  } else {
    child = function(){ return parent.apply(this, arguments); };
  }

  // Add static properties to the constructor function, if supplied.
  Object.assign(child, parent, staticProps);

  // Set the prototype chain to inherit from `parent`, without calling
  // `parent`'s constructor function.
  var Surrogate = function(){ this.constructor = child; };
  Surrogate.prototype = parent.prototype;
  child.prototype = new Surrogate; // jshint ignore:line

  // Add prototype properties (instance properties) to the subclass,
  // if supplied.
  if (protoProps) {
    Object.assign(child.prototype, protoProps);
  }

  // Set a convenience property in case the parent's prototype is needed
  // later.
  child.__super__ = parent.prototype;

  return child;
};

},{}],176:[function(require,module,exports){
"use strict";

var _ = require('./lodash');

// ES6 shims
require('object.assign').shim();
require('array.prototype.find');
require('./vendor/array-includes'); // shims ES7 Array.prototype.includes

require('./helpers/event'); // extends jQuery itself

var utils = require('./utils');

var SirTrevor = {

  config: require('./config'),

  log: utils.log,
  Locales: require('./locales'),

  Events: require('./events'),
  EventBus: require('./event-bus'),

  EditorStore: require('./extensions/editor-store'),
  Submittable: require('./extensions/submittable'),
  FileUploader: require('./extensions/file-uploader'),

  BlockMixins: require('./block_mixins'),
  BlockPositioner: require('./block-positioner'),
  BlockReorder: require('./block-reorder'),
  BlockDeletion: require('./block-deletion'),
  BlockValidations: require('./block-validations'),
  BlockStore: require('./block-store'),
  BlockManager: require('./block-manager'),

  SimpleBlock: require('./simple-block'),
  Block: require('./block'),

  Blocks: require('./blocks'),

  BlockControl: require('./block-control'),
  BlockControls: require('./block-controls'),
  FloatingBlockControls: require('./floating-block-controls'),

  FormatBar: require('./format-bar'),
  Editor: require('./editor'),

  toMarkdown: require('./to-markdown'),
  toHTML: require('./to-html'),

  setDefaults: function(options) {
    Object.assign(SirTrevor.config.defaults, options || {});
  },

  getInstance: utils.getInstance,

  setBlockOptions: function(type, options) {
    var block = SirTrevor.Blocks[type];

    if (_.isUndefined(block)) {
      return;
    }

    Object.assign(block.prototype, options || {});
  },

  runOnAllInstances: function(method) {
    if (SirTrevor.Editor.prototype.hasOwnProperty(method)) {
      var methodArgs = Array.prototype.slice.call(arguments, 1);
      Array.prototype.forEach.call(SirTrevor.config.instances, function(i) {
        i[method].apply(null, methodArgs);
      });
    } else {
      SirTrevor.log("method doesn't exist");
    }
  },

};

Object.assign(SirTrevor, require('./form-events'));


module.exports = SirTrevor;

},{"./block":146,"./block-control":138,"./block-controls":139,"./block-deletion":140,"./block-manager":141,"./block-positioner":142,"./block-reorder":143,"./block-store":144,"./block-validations":145,"./block_mixins":151,"./blocks":156,"./config":162,"./editor":163,"./event-bus":165,"./events":166,"./extensions/editor-store":167,"./extensions/file-uploader":168,"./extensions/submittable":169,"./floating-block-controls":170,"./form-events":171,"./format-bar":172,"./helpers/event":174,"./locales":177,"./lodash":178,"./simple-block":181,"./to-html":182,"./to-markdown":183,"./utils":184,"./vendor/array-includes":185,"array.prototype.find":2,"object.assign":51}],177:[function(require,module,exports){
"use strict";

var _ = require('./lodash');
var config = require('./config');
var utils = require('./utils');

var Locales = {
  en: {
    general: {
      'delete':           'Delete?',
      'drop':             'Drag __block__ here',
      'paste':            'Or paste URL here',
      'upload':           '...or choose a file',
      'close':            'close',
      'position':         'Position',
      'wait':             'Please wait...',
      'link':             'Enter a link'
    },
    errors: {
      'title': "You have the following errors:",
      'validation_fail': "__type__ block is invalid",
      'block_empty': "__name__ must not be empty",
      'type_missing': "You must have a block of type __type__",
      'required_type_empty': "A required block type __type__ is empty",
      'load_fail': "There was a problem loading the contents of the document"
    },
    blocks: {
      text: {
        'title': "Text"
      },
      list: {
        'title': "List"
      },
      quote: {
        'title': "Quote",
        'credit_field': "Credit"
      },
      image: {
        'title': "Image",
        'upload_error': "There was a problem with your upload"
      },
      video: {
        'title': "Video"
      },
      tweet: {
        'title': "Tweet",
        'fetch_error': "There was a problem fetching your tweet"
      },
      embedly: {
        'title': "Embedly",
        'fetch_error': "There was a problem fetching your embed",
        'key_missing': "An Embedly API key must be present"
      },
      heading: {
        'title': "Heading"
      }
    }
  }
};

if (window.i18n === undefined) {
  // Minimal i18n stub that only reads the English strings
  utils.log("Using i18n stub");
  window.i18n = {
    t: function(key, options) {
      var parts = key.split(':'), str, obj, part, i;

      obj = Locales[config.language];

      for(i = 0; i < parts.length; i++) {
        part = parts[i];

        if(!_.isUndefined(obj[part])) {
          obj = obj[part];
        }
      }

      str = obj;

      if (!_.isString(str)) { return ""; }

      if (str.indexOf('__') >= 0) {
        Object.keys(options).forEach(function(opt) {
          str = str.replace('__' + opt + '__', options[opt]);
        });
      }

      return str;
    }
  };
} else {
  utils.log("Using i18next");
  // Only use i18next when the library has been loaded by the user, keeps
  // dependencies slim
  i18n.init({ resStore: Locales, fallbackLng: config.language,
            ns: { namespaces: ['general', 'blocks'], defaultNs: 'general' }
  });
}

module.exports = Locales;

},{"./config":162,"./lodash":178,"./utils":184}],178:[function(require,module,exports){
"use strict";

exports.isEmpty = require('lodash.isempty');
exports.isFunction = require('lodash.isfunction');
exports.isObject = require('lodash.isobject');
exports.isString = require('lodash.isstring');
exports.isUndefined = require('lodash.isundefined');
exports.result = require('lodash.result');
exports.template = require('lodash.template');
exports.uniqueId = require('lodash.uniqueid');

},{"lodash.isempty":4,"lodash.isfunction":28,"lodash.isobject":29,"lodash.isstring":31,"lodash.isundefined":32,"lodash.result":33,"lodash.template":34,"lodash.uniqueid":50}],179:[function(require,module,exports){
"use strict";

module.exports = {
  mediatedEvents: {},
  eventNamespace: null,
  _bindMediatedEvents: function() {
    Object.keys(this.mediatedEvents).forEach(function(eventName){
      var cb = this.mediatedEvents[eventName];
      eventName = this.eventNamespace ?
        this.eventNamespace + ':' + eventName :
        eventName;
      this.mediator.on(eventName, this[cb].bind(this));
    }, this);
  }
};

},{}],180:[function(require,module,exports){
(function (global){
"use strict";

var _ = require('./lodash');
var $ = (typeof window !== "undefined" ? window.$ : typeof global !== "undefined" ? global.$ : null);

module.exports = {
  tagName: 'div',
  className: 'sir-trevor__view',
  attributes: {},

  $: function(selector) {
    return this.$el.find(selector);
  },

  render: function() {
    return this;
  },

  destroy: function() {
    if (!_.isUndefined(this.stopListening)) { this.stopListening(); }
    this.$el.remove();
  },

  _ensureElement: function() {
    if (!this.el) {
      var attrs = Object.assign({}, _.result(this, 'attributes')),
      html;
      if (this.id) { attrs.id = this.id; }
      if (this.className) { attrs['class'] = this.className; }

      if (attrs.html) {
        html = attrs.html;
        delete attrs.html;
      }
      var $el = $('<' + this.tagName + '>').attr(attrs);
      if (html) { $el.html(html); }
      this._setElement($el);
    } else {
      this._setElement(this.el);
    }
  },

  _setElement: function(element) {
    this.$el = $(element);
    this.el = this.$el[0];
    return this;
  }
};


}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./lodash":178}],181:[function(require,module,exports){
(function (global){
"use strict";

var _ = require('./lodash');
var utils = require('./utils');
var $ = (typeof window !== "undefined" ? window.$ : typeof global !== "undefined" ? global.$ : null);

var BlockReorder = require('./block-reorder');

var SimpleBlock = function(data, instance_id, mediator, options) {
  this.createStore(data);
  this.blockID = _.uniqueId('st-block-');
  this.instanceID = instance_id;
  this.mediator = mediator;
  this.options = options || {};

  this._ensureElement();
  this._bindFunctions();

  this.initialize.apply(this, arguments);
};

Object.assign(SimpleBlock.prototype, require('./function-bind'), require('./events'), require('./renderable'), require('./block-store'), {

  focus : function() {},

  valid : function() { return true; },

  className: 'st-block',

  block_template: _.template(
    "<div class='st-block__inner'><%= editor_html %></div>"
  ),

  attributes: function() {
    return {
      'id': this.blockID,
      'data-type': this.type,
      'data-instance': this.instanceID
    };
  },

  title: function() {
    return utils.titleize(this.type.replace(/[\W_]/g, ' '));
  },

  blockCSSClass: function() {
    this.blockCSSClass = utils.toSlug(this.type);
    return this.blockCSSClass;
  },

  type: '',

  class: function() {
    return utils.classify(this.type);
  },

  editorHTML: '',

  initialize: function() {},

  onBlockRender: function(){},
  beforeBlockRender: function(){},

  _setBlockInner : function() {
    var editor_html = _.result(this, 'editorHTML');

    this.$el.append(
      this.block_template({ editor_html: editor_html })
    );

    this.$inner = this.$el.find('.st-block__inner');
    this.$inner.bind('click mouseover', function(e){ e.stopPropagation(); });
  },

  render: function() {
    this.beforeBlockRender();

    this._setBlockInner();
    this._blockPrepare();

    return this;
  },

  _blockPrepare : function() {
    this._initUI();
    this._initMessages();

    this.checkAndLoadData();

    this.$el.addClass('st-item-ready');
    this.on("onRender", this.onBlockRender);
    this.save();
  },

  _withUIComponent: function(component, className, callback) {
    this.$ui.append(component.render().$el);
    if (className && callback) {
      this.$ui.on('click', className, callback);
    }
  },

  _initUI : function() {
    var ui_element = $("<div>", { 'class': 'st-block__ui' });
    this.$inner.append(ui_element);
    this.$ui = ui_element;
    this._initUIComponents();
  },

  _initMessages: function() {
    var msgs_element = $("<div>", { 'class': 'st-block__messages' });
    this.$inner.prepend(msgs_element);
    this.$messages = msgs_element;
  },

  addMessage: function(msg, additionalClass) {
    var $msg = $("<span>", { html: msg, class: "st-msg " + additionalClass });
    this.$messages.append($msg)
    .addClass('st-block__messages--is-visible');
    return $msg;
  },

  resetMessages: function() {
    this.$messages.html('')
    .removeClass('st-block__messages--is-visible');
  },

  _initUIComponents: function() {
    this._withUIComponent(new BlockReorder(this.$el));
  }

});

SimpleBlock.fn = SimpleBlock.prototype;

// Allow our Block to be extended.
SimpleBlock.extend = require('./helpers/extend');

module.exports = SimpleBlock;

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./block-reorder":143,"./block-store":144,"./events":166,"./function-bind":173,"./helpers/extend":175,"./lodash":178,"./renderable":180,"./utils":184}],182:[function(require,module,exports){
"use strict";

var _ = require('./lodash');
var utils = require('./utils');

module.exports = function(markdown, type) {

  // Deferring requiring these to sidestep a circular dependency:
  // Block -> this -> Blocks -> Block
  var Blocks = require('./blocks');

  // MD -> HTML
  type = utils.classify(type);

  var html = markdown,
      shouldWrap = type === "Text";

  if(_.isUndefined(shouldWrap)) { shouldWrap = false; }

  if (shouldWrap) {
    html = "<p>" + html;
  }

  html = html.replace(/\[([^\]]+)\]\(([^\)]+)\)/gm,function(match, p1, p2){
    return "<a href='"+p2+"'>"+p1.replace(/\n/g, '')+"</a>";
  });

  // This may seem crazy, but because JS doesn't have a look behind,
  // we reverse the string to regex out the italic items (and bold)
  // and look for something that doesn't start (or end in the reversed strings case)
  // with a slash.
  html = utils.reverse(
           utils.reverse(html)
           .replace(/_(?!\\)((_\\|[^_])*)_(?=$|[^\\])/gm, function(match, p1) {
              return ">i/<"+ p1.replace(/\n/g, '').replace(/[\s]+$/,'') +">i<";
           })
           .replace(/\*\*(?!\\)((\*\*\\|[^\*\*])*)\*\*(?=$|[^\\])/gm, function(match, p1){
              return ">b/<"+ p1.replace(/\n/g, '').replace(/[\s]+$/,'') +">b<";
           })
          );

  html =  html.replace(/^\> (.+)$/mg,"$1");

  // Use custom block toHTML functions (if any exist)
  var block;
  if (Blocks.hasOwnProperty(type)) {
    block = Blocks[type];
    // Do we have a toHTML function?
    if (!_.isUndefined(block.prototype.toHTML) && _.isFunction(block.prototype.toHTML)) {
      html = block.prototype.toHTML(html);
    }
  }

  if (shouldWrap) {
    html = html.replace(/\n\s*\n/gm, "</p><p>");
    html = html.replace(/\n/gm, "<br>");
  }

  html = html.replace(/\t/g, "&nbsp;&nbsp;&nbsp;&nbsp;")
             .replace(/\n/g, "<br>")
             .replace(/\*\*/, "")
             .replace(/__/, "");  // Cleanup any markdown characters left

  // Replace escaped
  html = html.replace(/\\\*/g, "*")
             .replace(/\\\[/g, "[")
             .replace(/\\\]/g, "]")
             .replace(/\\\_/g, "_")
             .replace(/\\\(/g, "(")
             .replace(/\\\)/g, ")")
             .replace(/\\\-/g, "-");

  if (shouldWrap) {
    html += "</p>";
  }

  return html;
};

},{"./blocks":156,"./lodash":178,"./utils":184}],183:[function(require,module,exports){
"use strict";

var _ = require('./lodash');
var utils = require('./utils');

module.exports = function(content, type) {

  // Deferring requiring these to sidestep a circular dependency:
  // Block -> this -> Blocks -> Block
  var Blocks = require('./blocks');

  type = utils.classify(type);

  var markdown = content;

  //Normalise whitespace
  markdown = markdown.replace(/&nbsp;/g," ");

  // First of all, strip any additional formatting
  // MSWord, I'm looking at you, punk.
  markdown = markdown.replace(/( class=(")?Mso[a-zA-Z]+(")?)/g, '')
                     .replace(/<!--(.*?)-->/g, '')
                     .replace(/\/\*(.*?)\*\//g, '')
                     .replace(/<(\/)*(meta|link|span|\\?xml:|st1:|o:|font)(.*?)>/gi, '');

  var badTags = ['style', 'script', 'applet', 'embed', 'noframes', 'noscript'],
      tagStripper, i;

  for (i = 0; i< badTags.length; i++) {
    tagStripper = new RegExp('<'+badTags[i]+'.*?'+badTags[i]+'(.*?)>', 'gi');
    markdown = markdown.replace(tagStripper, '');
  }

  // Escape anything in here that *could* be considered as MD
  // Markdown chars we care about: * [] _ () -
  markdown = markdown.replace(/\*/g, "\\*")
                    .replace(/\[/g, "\\[")
                    .replace(/\]/g, "\\]")
                    .replace(/\_/g, "\\_")
                    .replace(/\(/g, "\\(")
                    .replace(/\)/g, "\\)")
                    .replace(/\-/g, "\\-");

  var inlineTags = ["em", "i", "strong", "b"];

  for (i = 0; i< inlineTags.length; i++) {
    tagStripper = new RegExp('<'+inlineTags[i]+'><br></'+inlineTags[i]+'>', 'gi');
    markdown = markdown.replace(tagStripper, '<br>');
  }

  function replaceBolds(match, p1, p2){
    if(_.isUndefined(p2)) { p2 = ''; }
    return "**" + p1.replace(/<(.)?br(.)?>/g, '') + "**" + p2;
  }

  function replaceItalics(match, p1, p2){
    if(_.isUndefined(p2)) { p2 = ''; }
    return "_" + p1.replace(/<(.)?br(.)?>/g, '') + "_" + p2;
  }

  markdown = markdown.replace(/<(\w+)(?:\s+\w+="[^"]+(?:"\$[^"]+"[^"]+)?")*>\s*<\/\1>/gim, '') //Empty elements
                      .replace(/\n/mg,"")
                      .replace(/<a.*?href=[""'](.*?)[""'].*?>(.*?)<\/a>/gim, function(match, p1, p2){
                        return "[" + p2.trim().replace(/<(.)?br(.)?>/g, '') + "]("+ p1 +")";
                      }) // Hyperlinks
                      .replace(/<strong>(?:\s*)(.*?)(\s)*?<\/strong>/gim, replaceBolds)
                      .replace(/<b>(?:\s*)(.*?)(\s*)?<\/b>/gim, replaceBolds)
                      .replace(/<em>(?:\s*)(.*?)(\s*)?<\/em>/gim, replaceItalics)
                      .replace(/<i>(?:\s*)(.*?)(\s*)?<\/i>/gim, replaceItalics);


  // Do our generic stripping out
  markdown = markdown.replace(/([^<>]+)(<div>)/g,"$1\n$2")                                 // Divitis style line breaks (handle the first line)
                 .replace(/<div><div>/g,'\n<div>')                                         // ^ (double opening divs with one close from Chrome)
                 .replace(/(?:<div>)([^<>]+)(?:<div>)/g,"$1\n")                            // ^ (handle nested divs that start with content)
                 .replace(/(?:<div>)(?:<br>)?([^<>]+)(?:<br>)?(?:<\/div>)/g,"$1\n")        // ^ (handle content inside divs)
                 .replace(/<\/p>/g,"\n\n")                                               // P tags as line breaks
                 .replace(/<(.)?br(.)?>/g,"\n")                                            // Convert normal line breaks
                 .replace(/&lt;/g,"<").replace(/&gt;/g,">");                                 // Encoding

  // Use custom block toMarkdown functions (if any exist)
  var block;
  if (Blocks.hasOwnProperty(type)) {
    block = Blocks[type];
    // Do we have a toMarkdown function?
    if (!_.isUndefined(block.prototype.toMarkdown) && _.isFunction(block.prototype.toMarkdown)) {
      markdown = block.prototype.toMarkdown(markdown);
    }
  }

  // Strip remaining HTML
  markdown = markdown.replace(/<\/?[^>]+(>|$)/g, "");

  return markdown;
};

},{"./blocks":156,"./lodash":178,"./utils":184}],184:[function(require,module,exports){
(function (global){
"use strict";

var $ = (typeof window !== "undefined" ? window.$ : typeof global !== "undefined" ? global.$ : null);
var _ = require('./lodash');
var config = require('./config');

var urlRegex = /^(?:([A-Za-z]+):)?(\/{0,3})([0-9.\-A-Za-z]+)(?::(\d+))?(?:\/([^?#]*))?(?:\?([^#]*))?(?:#(.*))?$/;

var utils = {

  getInstance: function(identifier) {
    if (_.isUndefined(identifier)) {
      return config.instances[0];
    }

    if (_.isString(identifier)) {
      return config.instances.find(function(editor) {
        return editor.ID === identifier;
      });
    }

    return config.instances[identifier];
  },

  getInstanceBySelection: function() {
    return utils.getInstance(
      $(window.getSelection().anchorNode).
        parents('.st-block').data('instance'));
  },

  getBlockBySelection: function() {
    return utils.getInstanceBySelection().findBlockById(
      $(window.getSelection().anchorNode).parents('.st-block').get(0).id
    );
  },

  log: function() {
    if (!_.isUndefined(console) && config.debug) {
      console.log.apply(console, arguments);
    }
  },

  isURI : function(string) {
    return (urlRegex.test(string));
  },

  titleize: function(str){
    if (str === null) {
      return '';
    }
    str  = String(str).toLowerCase();
    return str.replace(/(?:^|\s|-)\S/g, function(c){ return c.toUpperCase(); });
  },

  classify: function(str){
    return utils.titleize(String(str).replace(/[\W_]/g, ' ')).replace(/\s/g, '');
  },

  capitalize : function(string) {
    return string.charAt(0).toUpperCase() + string.substring(1).toLowerCase();
  },

  flatten: function(obj) {
    var x = {};
    (Array.isArray(obj) ? obj : Object.keys(obj)).forEach(function (i) {
      x[i] = true;
    });
    return x;
  },

  underscored: function(str){
    return str.trim().replace(/([a-z\d])([A-Z]+)/g, '$1_$2')
    .replace(/[-\s]+/g, '_').toLowerCase();
  },

  reverse: function(str) {
    return str.split("").reverse().join("");
  },

  toSlug: function(str) {
    return str
    .toLowerCase()
    .replace(/[^\w ]+/g,'')
    .replace(/ +/g,'-');
  }

};

module.exports = utils;

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./config":162,"./lodash":178}],185:[function(require,module,exports){
"use strict";

// jshint freeze: false

if (![].includes) {
  Array.prototype.includes = function(searchElement /*, fromIndex*/ ) {
    if (this === undefined || this === null) {
      throw new TypeError('Cannot convert this value to object');
    }
    var O = Object(this);
    var len = parseInt(O.length) || 0;
    if (len === 0) {
      return false;
    }
    var n = parseInt(arguments[1]) || 0;
    var k;
    if (n >= 0) {
      k = n;
    } else {
      k = len + n;
      if (k < 0) {
        k = 0;
      }
    }
    while (k < len) {
      var currentElement = O[k];
      if (searchElement === currentElement ||
         (searchElement !== searchElement && currentElement !== currentElement)) {
        return true;
      }
      k++;
    }
    return false;
  };
}

},{}]},{},[1])(1)
});