text: (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){
  (function (process,global){
  'use strict';
  
  /* eslint no-unused-vars: off */
  /* eslint-env commonjs */
  
  /**
   * Shim process.stdout.
   */
  
  process.stdout = require('browser-stdout')();
  
  var Mocha = require('./lib/mocha');
  
  /**
   * Create a Mocha instance.
   *
   * @return {undefined}
   */
  
  var mocha = new Mocha({ reporter: 'html' });
  
  /**
   * Save timer references to avoid Sinon interfering (see GH-237).
   */
  
  var Date = global.Date;
  var setTimeout = global.setTimeout;
  var setInterval = global.setInterval;
  var clearTimeout = global.clearTimeout;
  var clearInterval = global.clearInterval;
  
  var uncaughtExceptionHandlers = [];
  
  var originalOnerrorHandler = global.onerror;
  
  /**
   * Remove uncaughtException listener.
   * Revert to original onerror handler if previously defined.
   */
  
  process.removeListener = function (e, fn) {
    if (e === 'uncaughtException') {
      if (originalOnerrorHandler) {
        global.onerror = originalOnerrorHandler;
      } else {
        global.onerror = function () {};
      }
      var i = Mocha.utils.indexOf(uncaughtExceptionHandlers, fn);
      if (i !== -1) {
        uncaughtExceptionHandlers.splice(i, 1);
      }
    }
  };
  
  /**
   * Implements uncaughtException listener.
   */
  
  process.on = function (e, fn) {
    if (e === 'uncaughtException') {
      global.onerror = function (err, url, line) {
        fn(new Error(err + ' (' + url + ':' + line + ')'));
        return !mocha.allowUncaught;
      };
      uncaughtExceptionHandlers.push(fn);
    }
  };
  
  // The BDD UI is registered by default, but no UI will be functional in the
  // browser without an explicit call to the overridden `mocha.ui` (see below).
  // Ensure that this default UI does not expose its methods to the global scope.
  mocha.suite.removeAllListeners('pre-require');
  
  var immediateQueue = [];
  var immediateTimeout;
  
  function timeslice () {
    var immediateStart = new Date().getTime();
    while (immediateQueue.length && (new Date().getTime() - immediateStart) < 100) {
      immediateQueue.shift()();
    }
    if (immediateQueue.length) {
      immediateTimeout = setTimeout(timeslice, 0);
    } else {
      immediateTimeout = null;
    }
  }
  
  /**
   * High-performance override of Runner.immediately.
   */
  
  Mocha.Runner.immediately = function (callback) {
    immediateQueue.push(callback);
    if (!immediateTimeout) {
      immediateTimeout = setTimeout(timeslice, 0);
    }
  };
  
  /**
   * Function to allow assertion libraries to throw errors directly into mocha.
   * This is useful when running tests in a browser because window.onerror will
   * only receive the 'message' attribute of the Error.
   */
  mocha.throwError = function (err) {
    Mocha.utils.forEach(uncaughtExceptionHandlers, function (fn) {
      fn(err);
    });
    throw err;
  };
  
  /**
   * Override ui to ensure that the ui functions are initialized.
   * Normally this would happen in Mocha.prototype.loadFiles.
   */
  
  mocha.ui = function (ui) {
    Mocha.prototype.ui.call(this, ui);
    this.suite.emit('pre-require', global, null, this);
    return this;
  };
  
  /**
   * Setup mocha with the given setting options.
   */
  
  mocha.setup = function (opts) {
    if (typeof opts === 'string') {
      opts = { ui: opts };
    }
    for (var opt in opts) {
      if (opts.hasOwnProperty(opt)) {
        this[opt](opts[opt]);
      }
    }
    return this;
  };
  
  /**
   * Run mocha, returning the Runner.
   */
  
  mocha.run = function (fn) {
    var options = mocha.options;
    mocha.globals('location');
  
    var query = Mocha.utils.parseQuery(global.location.search || '');
    if (query.grep) {
      mocha.grep(query.grep);
    }
    if (query.fgrep) {
      mocha.fgrep(query.fgrep);
    }
    if (query.invert) {
      mocha.invert();
    }
  
    return Mocha.prototype.run.call(mocha, function (err) {
      // The DOM Document is not available in Web Workers.
      var document = global.document;
      if (document && document.getElementById('mocha') && options.noHighlighting !== true) {
        Mocha.utils.highlightTags('code');
      }
      if (fn) {
        fn(err);
      }
    });
  };
  
  /**
   * Expose the process shim.
   * https://github.com/mochajs/mocha/pull/916
   */
  
  Mocha.process = process;
  
  /**
   * Expose mocha.
   */
  
  global.Mocha = Mocha;
  global.mocha = mocha;
  
  // this allows test/acceptance/required-tokens.js to pass; thus,
  // you can now do `const describe = require('mocha').describe` in a
  // browser context (assuming browserification).  should fix #880
  module.exports = global;
  
  }).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
  },{"./lib/mocha":14,"_process":67,"browser-stdout":41}],2:[function(require,module,exports){
  'use strict';
  
  function noop () {}
  
  module.exports = function () {
    return noop;
  };
  
  },{}],3:[function(require,module,exports){
  'use strict';
  
  /**
   * Module exports.
   */
  
  exports.EventEmitter = EventEmitter;
  
  /**
   * Object#toString reference.
   */
  var objToString = Object.prototype.toString;
  
  /**
   * Check if a value is an array.
   *
   * @api private
   * @param {*} val The value to test.
   * @return {boolean} true if the value is an array, otherwise false.
   */
  function isArray (val) {
    return objToString.call(val) === '[object Array]';
  }
  
  /**
   * Event emitter constructor.
   *
   * @api public
   */
  function EventEmitter () {}
  
  /**
   * Add a listener.
   *
   * @api public
   * @param {string} name Event name.
   * @param {Function} fn Event handler.
   * @return {EventEmitter} Emitter instance.
   */
  EventEmitter.prototype.on = function (name, fn) {
    if (!this.$events) {
      this.$events = {};
    }
  
    if (!this.$events[name]) {
      this.$events[name] = fn;
    } else if (isArray(this.$events[name])) {
      this.$events[name].push(fn);
    } else {
      this.$events[name] = [this.$events[name], fn];
    }
  
    return this;
  };
  
  EventEmitter.prototype.addListener = EventEmitter.prototype.on;
  
  /**
   * Adds a volatile listener.
   *
   * @api public
   * @param {string} name Event name.
   * @param {Function} fn Event handler.
   * @return {EventEmitter} Emitter instance.
   */
  EventEmitter.prototype.once = function (name, fn) {
    var self = this;
  
    function on () {
      self.removeListener(name, on);
      fn.apply(this, arguments);
    }
  
    on.listener = fn;
    this.on(name, on);
  
    return this;
  };
  
  /**
   * Remove a listener.
   *
   * @api public
   * @param {string} name Event name.
   * @param {Function} fn Event handler.
   * @return {EventEmitter} Emitter instance.
   */
  EventEmitter.prototype.removeListener = function (name, fn) {
    if (this.$events && this.$events[name]) {
      var list = this.$events[name];
  
      if (isArray(list)) {
        var pos = -1;
  
        for (var i = 0, l = list.length; i < l; i++) {
          if (list[i] === fn || (list[i].listener && list[i].listener === fn)) {
            pos = i;
            break;
          }
        }
  
        if (pos < 0) {
          return this;
        }
  
        list.splice(pos, 1);
  
        if (!list.length) {
          delete this.$events[name];
        }
      } else if (list === fn || (list.listener && list.listener === fn)) {
        delete this.$events[name];
      }
    }
  
    return this;
  };
  
  /**
   * Remove all listeners for an event.
   *
   * @api public
   * @param {string} name Event name.
   * @return {EventEmitter} Emitter instance.
   */
  EventEmitter.prototype.removeAllListeners = function (name) {
    if (name === undefined) {
      this.$events = {};
      return this;
    }
  
    if (this.$events && this.$events[name]) {
      this.$events[name] = null;
    }
  
    return this;
  };
  
  /**
   * Get all listeners for a given event.
   *
   * @api public
   * @param {string} name Event name.
   * @return {EventEmitter} Emitter instance.
   */
  EventEmitter.prototype.listeners = function (name) {
    if (!this.$events) {
      this.$events = {};
    }
  
    if (!this.$events[name]) {
      this.$events[name] = [];
    }
  
    if (!isArray(this.$events[name])) {
      this.$events[name] = [this.$events[name]];
    }
  
    return this.$events[name];
  };
  
  /**
   * Emit an event.
   *
   * @api public
   * @param {string} name Event name.
   * @return {boolean} true if at least one handler was invoked, else false.
   */
  EventEmitter.prototype.emit = function (name) {
    if (!this.$events) {
      return false;
    }
  
    var handler = this.$events[name];
  
    if (!handler) {
      return false;
    }
  
    var args = Array.prototype.slice.call(arguments, 1);
  
    if (typeof handler === 'function') {
      handler.apply(this, args);
    } else if (isArray(handler)) {
      var listeners = handler.slice();
  
      for (var i = 0, l = listeners.length; i < l; i++) {
        listeners[i].apply(this, args);
      }
    } else {
      return false;
    }
  
    return true;
  };
  
  },{}],4:[function(require,module,exports){
  'use strict';
  
  /**
   * Expose `Progress`.
   */
  
  module.exports = Progress;
  
  /**
   * Initialize a new `Progress` indicator.
   */
  function Progress () {
    this.percent = 0;
    this.size(0);
    this.fontSize(11);
    this.font('helvetica, arial, sans-serif');
  }
  
  /**
   * Set progress size to `size`.
   *
   * @api public
   * @param {number} size
   * @return {Progress} Progress instance.
   */
  Progress.prototype.size = function (size) {
    this._size = size;
    return this;
  };
  
  /**
   * Set text to `text`.
   *
   * @api public
   * @param {string} text
   * @return {Progress} Progress instance.
   */
  Progress.prototype.text = function (text) {
    this._text = text;
    return this;
  };
  
  /**
   * Set font size to `size`.
   *
   * @api public
   * @param {number} size
   * @return {Progress} Progress instance.
   */
  Progress.prototype.fontSize = function (size) {
    this._fontSize = size;
    return this;
  };
  
  /**
   * Set font to `family`.
   *
   * @param {string} family
   * @return {Progress} Progress instance.
   */
  Progress.prototype.font = function (family) {
    this._font = family;
    return this;
  };
  
  /**
   * Update percentage to `n`.
   *
   * @param {number} n
   * @return {Progress} Progress instance.
   */
  Progress.prototype.update = function (n) {
    this.percent = n;
    return this;
  };
  
  /**
   * Draw on `ctx`.
   *
   * @param {CanvasRenderingContext2d} ctx
   * @return {Progress} Progress instance.
   */
  Progress.prototype.draw = function (ctx) {
    try {
      var percent = Math.min(this.percent, 100);
      var size = this._size;
      var half = size / 2;
      var x = half;
      var y = half;
      var rad = half - 1;
      var fontSize = this._fontSize;
  
      ctx.font = fontSize + 'px ' + this._font;
  
      var angle = Math.PI * 2 * (percent / 100);
      ctx.clearRect(0, 0, size, size);
  
      // outer circle
      ctx.strokeStyle = '#9f9f9f';
      ctx.beginPath();
      ctx.arc(x, y, rad, 0, angle, false);
      ctx.stroke();
  
      // inner circle
      ctx.strokeStyle = '#eee';
      ctx.beginPath();
      ctx.arc(x, y, rad - 1, 0, angle, true);
      ctx.stroke();
  
      // text
      var text = this._text || (percent | 0) + '%';
      var w = ctx.measureText(text).width;
  
      ctx.fillText(text, x - w / 2 + 1, y + fontSize / 2 - 1);
    } catch (err) {
      // don't fail if we can't render progress
    }
    return this;
  };
  
  },{}],5:[function(require,module,exports){
  (function (global){
  'use strict';
  
  exports.isatty = function isatty () {
    return true;
  };
  
  exports.getWindowSize = function getWindowSize () {
    if ('innerHeight' in global) {
      return [global.innerHeight, global.innerWidth];
    }
    // In a Web Worker, the DOM Window is not available.
    return [640, 480];
  };
  
  }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
  },{}],6:[function(require,module,exports){
  'use strict';
  
  /**
   * Module dependencies.
   */
  
  var JSON = require('json3');
  
  /**
   * Expose `Context`.
   */
  
  module.exports = Context;
  
  /**
   * Initialize a new `Context`.
   *
   * @api private
   */
  function Context () {}
  
  /**
   * Set or get the context `Runnable` to `runnable`.
   *
   * @api private
   * @param {Runnable} runnable
   * @return {Context}
   */
  Context.prototype.runnable = function (runnable) {
    if (!arguments.length) {
      return this._runnable;
    }
    this.test = this._runnable = runnable;
    return this;
  };
  
  /**
   * Set test timeout `ms`.
   *
   * @api private
   * @param {number} ms
   * @return {Context} self
   */
  Context.prototype.timeout = function (ms) {
    if (!arguments.length) {
      return this.runnable().timeout();
    }
    this.runnable().timeout(ms);
    return this;
  };
  
  /**
   * Set test timeout `enabled`.
   *
   * @api private
   * @param {boolean} enabled
   * @return {Context} self
   */
  Context.prototype.enableTimeouts = function (enabled) {
    this.runnable().enableTimeouts(enabled);
    return this;
  };
  
  /**
   * Set test slowness threshold `ms`.
   *
   * @api private
   * @param {number} ms
   * @return {Context} self
   */
  Context.prototype.slow = function (ms) {
    this.runnable().slow(ms);
    return this;
  };
  
  /**
   * Mark a test as skipped.
   *
   * @api private
   * @return {Context} self
   */
  Context.prototype.skip = function () {
    this.runnable().skip();
    return this;
  };
  
  /**
   * Allow a number of retries on failed tests
   *
   * @api private
   * @param {number} n
   * @return {Context} self
   */
  Context.prototype.retries = function (n) {
    if (!arguments.length) {
      return this.runnable().retries();
    }
    this.runnable().retries(n);
    return this;
  };
  
  /**
   * Inspect the context void of `._runnable`.
   *
   * @api private
   * @return {string}
   */
  Context.prototype.inspect = function () {
    return JSON.stringify(this, function (key, val) {
      return key === 'runnable' || key === 'test' ? undefined : val;
    }, 2);
  };
  
  },{"json3":54}],7:[function(require,module,exports){
  'use strict';
  
  /**
   * Module dependencies.
   */
  
  var Runnable = require('./runnable');
  var inherits = require('./utils').inherits;
  
  /**
   * Expose `Hook`.
   */
  
  module.exports = Hook;
  
  /**
   * Initialize a new `Hook` with the given `title` and callback `fn`.
   *
   * @param {String} title
   * @param {Function} fn
   * @api private
   */
  function Hook (title, fn) {
    Runnable.call(this, title, fn);
    this.type = 'hook';
  }
  
  /**
   * Inherit from `Runnable.prototype`.
   */
  inherits(Hook, Runnable);
  
  /**
   * Get or set the test `err`.
   *
   * @param {Error} err
   * @return {Error}
   * @api public
   */
  Hook.prototype.error = function (err) {
    if (!arguments.length) {
      err = this._error;
      this._error = null;
      return err;
    }
  
    this._error = err;
  };
  
  },{"./runnable":33,"./utils":38}],8:[function(require,module,exports){
  'use strict';
  
  /**
   * Module dependencies.
   */
  
  var Test = require('../test');
  
  /**
   * BDD-style interface:
   *
   *      describe('Array', function() {
   *        describe('#indexOf()', function() {
   *          it('should return -1 when not present', function() {
   *            // ...
   *          });
   *
   *          it('should return the index when present', function() {
   *            // ...
   *          });
   *        });
   *      });
   *
   * @param {Suite} suite Root suite.
   */
  module.exports = function (suite) {
    var suites = [suite];
  
    suite.on('pre-require', function (context, file, mocha) {
      var common = require('./common')(suites, context, mocha);
  
      context.before = common.before;
      context.after = common.after;
      context.beforeEach = common.beforeEach;
      context.afterEach = common.afterEach;
      context.run = mocha.options.delay && common.runWithSuite(suite);
      /**
       * Describe a "suite" with the given `title`
       * and callback `fn` containing nested suites
       * and/or tests.
       */
  
      context.describe = context.context = function (title, fn) {
        return common.suite.create({
          title: title,
          file: file,
          fn: fn
        });
      };
  
      /**
       * Pending describe.
       */
  
      context.xdescribe = context.xcontext = context.describe.skip = function (title, fn) {
        return common.suite.skip({
          title: title,
          file: file,
          fn: fn
        });
      };
  
      /**
       * Exclusive suite.
       */
  
      context.describe.only = function (title, fn) {
        return common.suite.only({
          title: title,
          file: file,
          fn: fn
        });
      };
  
      /**
       * Describe a specification or test-case
       * with the given `title` and callback `fn`
       * acting as a thunk.
       */
  
      context.it = context.specify = function (title, fn) {
        var suite = suites[0];
        if (suite.isPending()) {
          fn = null;
        }
        var test = new Test(title, fn);
        test.file = file;
        suite.addTest(test);
        return test;
      };
  
      /**
       * Exclusive test-case.
       */
  
      context.it.only = function (title, fn) {
        return common.test.only(mocha, context.it(title, fn));
      };
  
      /**
       * Pending test case.
       */
  
      context.xit = context.xspecify = context.it.skip = function (title) {
        context.it(title);
      };
  
      /**
       * Number of attempts to retry.
       */
      context.it.retries = function (n) {
        context.retries(n);
      };
    });
  };
  
  },{"../test":36,"./common":9}],9:[function(require,module,exports){
  'use strict';
  
  var Suite = require('../suite');
  
  /**
   * Functions common to more than one interface.
   *
   * @param {Suite[]} suites
   * @param {Context} context
   * @param {Mocha} mocha
   * @return {Object} An object containing common functions.
   */
  module.exports = function (suites, context, mocha) {
    return {
      /**
       * This is only present if flag --delay is passed into Mocha. It triggers
       * root suite execution.
       *
       * @param {Suite} suite The root suite.
       * @return {Function} A function which runs the root suite
       */
      runWithSuite: function runWithSuite (suite) {
        return function run () {
          suite.run();
        };
      },
  
      /**
       * Execute before running tests.
       *
       * @param {string} name
       * @param {Function} fn
       */
      before: function (name, fn) {
        suites[0].beforeAll(name, fn);
      },
  
      /**
       * Execute after running tests.
       *
       * @param {string} name
       * @param {Function} fn
       */
      after: function (name, fn) {
        suites[0].afterAll(name, fn);
      },
  
      /**
       * Execute before each test case.
       *
       * @param {string} name
       * @param {Function} fn
       */
      beforeEach: function (name, fn) {
        suites[0].beforeEach(name, fn);
      },
  
      /**
       * Execute after each test case.
       *
       * @param {string} name
       * @param {Function} fn
       */
      afterEach: function (name, fn) {
        suites[0].afterEach(name, fn);
      },
  
      suite: {
        /**
         * Create an exclusive Suite; convenience function
         * See docstring for create() below.
         *
         * @param {Object} opts
         * @returns {Suite}
         */
        only: function only (opts) {
          mocha.options.hasOnly = true;
          opts.isOnly = true;
          return this.create(opts);
        },
  
        /**
         * Create a Suite, but skip it; convenience function
         * See docstring for create() below.
         *
         * @param {Object} opts
         * @returns {Suite}
         */
        skip: function skip (opts) {
          opts.pending = true;
          return this.create(opts);
        },
  
        /**
         * Creates a suite.
         * @param {Object} opts Options
         * @param {string} opts.title Title of Suite
         * @param {Function} [opts.fn] Suite Function (not always applicable)
         * @param {boolean} [opts.pending] Is Suite pending?
         * @param {string} [opts.file] Filepath where this Suite resides
         * @param {boolean} [opts.isOnly] Is Suite exclusive?
         * @returns {Suite}
         */
        create: function create (opts) {
          var suite = Suite.create(suites[0], opts.title);
          suite.pending = Boolean(opts.pending);
          suite.file = opts.file;
          suites.unshift(suite);
          if (opts.isOnly) {
            suite.parent._onlySuites = suite.parent._onlySuites.concat(suite);
            mocha.options.hasOnly = true;
          }
          if (typeof opts.fn === 'function') {
            opts.fn.call(suite);
            suites.shift();
          } else if (typeof opts.fn === 'undefined' && !suite.pending) {
            throw new Error('Suite "' + suite.fullTitle() + '" was defined but no callback was supplied. Supply a callback or explicitly skip the suite.');
          }
  
          return suite;
        }
      },
  
      test: {
  
        /**
         * Exclusive test-case.
         *
         * @param {Object} mocha
         * @param {Function} test
         * @returns {*}
         */
        only: function (mocha, test) {
          test.parent._onlyTests = test.parent._onlyTests.concat(test);
          mocha.options.hasOnly = true;
          return test;
        },
  
        /**
         * Pending test case.
         *
         * @param {string} title
         */
        skip: function (title) {
          context.test(title);
        },
  
        /**
         * Number of retry attempts
         *
         * @param {number} n
         */
        retries: function (n) {
          context.retries(n);
        }
      }
    };
  };
  
  },{"../suite":35}],10:[function(require,module,exports){
  'use strict';
  
  /**
   * Module dependencies.
   */
  
  var Suite = require('../suite');
  var Test = require('../test');
  
  /**
   * Exports-style (as Node.js module) interface:
   *
   *     exports.Array = {
   *       '#indexOf()': {
   *         'should return -1 when the value is not present': function() {
   *
   *         },
   *
   *         'should return the correct index when the value is present': function() {
   *
   *         }
   *       }
   *     };
   *
   * @param {Suite} suite Root suite.
   */
  module.exports = function (suite) {
    var suites = [suite];
  
    suite.on('require', visit);
  
    function visit (obj, file) {
      var suite;
      for (var key in obj) {
        if (typeof obj[key] === 'function') {
          var fn = obj[key];
          switch (key) {
            case 'before':
              suites[0].beforeAll(fn);
              break;
            case 'after':
              suites[0].afterAll(fn);
              break;
            case 'beforeEach':
              suites[0].beforeEach(fn);
              break;
            case 'afterEach':
              suites[0].afterEach(fn);
              break;
            default:
              var test = new Test(key, fn);
              test.file = file;
              suites[0].addTest(test);
          }
        } else {
          suite = Suite.create(suites[0], key);
          suites.unshift(suite);
          visit(obj[key], file);
          suites.shift();
        }
      }
    }
  };
  
  },{"../suite":35,"../test":36}],11:[function(require,module,exports){
  'use strict';
  
  exports.bdd = require('./bdd');
  exports.tdd = require('./tdd');
  exports.qunit = require('./qunit');
  exports.exports = require('./exports');
  
  },{"./bdd":8,"./exports":10,"./qunit":12,"./tdd":13}],12:[function(require,module,exports){
  'use strict';
  
  /**
   * Module dependencies.
   */
  
  var Test = require('../test');
  
  /**
   * QUnit-style interface:
   *
   *     suite('Array');
   *
   *     test('#length', function() {
   *       var arr = [1,2,3];
   *       ok(arr.length == 3);
   *     });
   *
   *     test('#indexOf()', function() {
   *       var arr = [1,2,3];
   *       ok(arr.indexOf(1) == 0);
   *       ok(arr.indexOf(2) == 1);
   *       ok(arr.indexOf(3) == 2);
   *     });
   *
   *     suite('String');
   *
   *     test('#length', function() {
   *       ok('foo'.length == 3);
   *     });
   *
   * @param {Suite} suite Root suite.
   */
  module.exports = function (suite) {
    var suites = [suite];
  
    suite.on('pre-require', function (context, file, mocha) {
      var common = require('./common')(suites, context, mocha);
  
      context.before = common.before;
      context.after = common.after;
      context.beforeEach = common.beforeEach;
      context.afterEach = common.afterEach;
      context.run = mocha.options.delay && common.runWithSuite(suite);
      /**
       * Describe a "suite" with the given `title`.
       */
  
      context.suite = function (title) {
        if (suites.length > 1) {
          suites.shift();
        }
        return common.suite.create({
          title: title,
          file: file,
          fn: false
        });
      };
  
      /**
       * Exclusive Suite.
       */
  
      context.suite.only = function (title) {
        if (suites.length > 1) {
          suites.shift();
        }
        return common.suite.only({
          title: title,
          file: file,
          fn: false
        });
      };
  
      /**
       * Describe a specification or test-case
       * with the given `title` and callback `fn`
       * acting as a thunk.
       */
  
      context.test = function (title, fn) {
        var test = new Test(title, fn);
        test.file = file;
        suites[0].addTest(test);
        return test;
      };
  
      /**
       * Exclusive test-case.
       */
  
      context.test.only = function (title, fn) {
        return common.test.only(mocha, context.test(title, fn));
      };
  
      context.test.skip = common.test.skip;
      context.test.retries = common.test.retries;
    });
  };
  
  },{"../test":36,"./common":9}],13:[function(require,module,exports){
  'use strict';
  
  /**
   * Module dependencies.
   */
  
  var Test = require('../test');
  
  /**
   * TDD-style interface:
   *
   *      suite('Array', function() {
   *        suite('#indexOf()', function() {
   *          suiteSetup(function() {
   *
   *          });
   *
   *          test('should return -1 when not present', function() {
   *
   *          });
   *
   *          test('should return the index when present', function() {
   *
   *          });
   *
   *          suiteTeardown(function() {
   *
   *          });
   *        });
   *      });
   *
   * @param {Suite} suite Root suite.
   */
  module.exports = function (suite) {
    var suites = [suite];
  
    suite.on('pre-require', function (context, file, mocha) {
      var common = require('./common')(suites, context, mocha);
  
      context.setup = common.beforeEach;
      context.teardown = common.afterEach;
      context.suiteSetup = common.before;
      context.suiteTeardown = common.after;
      context.run = mocha.options.delay && common.runWithSuite(suite);
  
      /**
       * Describe a "suite" with the given `title` and callback `fn` containing
       * nested suites and/or tests.
       */
      context.suite = function (title, fn) {
        return common.suite.create({
          title: title,
          file: file,
          fn: fn
        });
      };
  
      /**
       * Pending suite.
       */
      context.suite.skip = function (title, fn) {
        return common.suite.skip({
          title: title,
          file: file,
          fn: fn
        });
      };
  
      /**
       * Exclusive test-case.
       */
      context.suite.only = function (title, fn) {
        return common.suite.only({
          title: title,
          file: file,
          fn: fn
        });
      };
  
      /**
       * Describe a specification or test-case with the given `title` and
       * callback `fn` acting as a thunk.
       */
      context.test = function (title, fn) {
        var suite = suites[0];
        if (suite.isPending()) {
          fn = null;
        }
        var test = new Test(title, fn);
        test.file = file;
        suite.addTest(test);
        return test;
      };
  
      /**
       * Exclusive test-case.
       */
  
      context.test.only = function (title, fn) {
        return common.test.only(mocha, context.test(title, fn));
      };
  
      context.test.skip = common.test.skip;
      context.test.retries = common.test.retries;
    });
  };
  
  },{"../test":36,"./common":9}],14:[function(require,module,exports){
  (function (process,global,__dirname){
  'use strict';
  
  /*!
   * mocha
   * Copyright(c) 2011 TJ Holowaychuk <tj@vision-media.ca>
   * MIT Licensed
   */
  
  /**
   * Module dependencies.
   */
  
  var escapeRe = require('escape-string-regexp');
  var path = require('path');
  var reporters = require('./reporters');
  var utils = require('./utils');
  
  /**
   * Expose `Mocha`.
   */
  
  exports = module.exports = Mocha;
  
  /**
   * To require local UIs and reporters when running in node.
   */
  
  if (!process.browser) {
    var cwd = process.cwd();
    module.paths.push(cwd, path.join(cwd, 'node_modules'));
  }
  
  /**
   * Expose internals.
   */
  
  exports.utils = utils;
  exports.interfaces = require('./interfaces');
  exports.reporters = reporters;
  exports.Runnable = require('./runnable');
  exports.Context = require('./context');
  exports.Runner = require('./runner');
  exports.Suite = require('./suite');
  exports.Hook = require('./hook');
  exports.Test = require('./test');
  
  /**
   * Return image `name` path.
   *
   * @api private
   * @param {string} name
   * @return {string}
   */
  function image (name) {
    return path.join(__dirname, '../images', name + '.png');
  }
  
  /**
   * Set up mocha with `options`.
   *
   * Options:
   *
   *   - `ui` name "bdd", "tdd", "exports" etc
   *   - `reporter` reporter instance, defaults to `mocha.reporters.spec`
   *   - `globals` array of accepted globals
   *   - `timeout` timeout in milliseconds
   *   - `retries` number of times to retry failed tests
   *   - `bail` bail on the first test failure
   *   - `slow` milliseconds to wait before considering a test slow
   *   - `ignoreLeaks` ignore global leaks
   *   - `fullTrace` display the full stack-trace on failing
   *   - `grep` string or regexp to filter tests with
   *
   * @param {Object} options
   * @api public
   */
  function Mocha (options) {
    options = options || {};
    this.files = [];
    this.options = options;
    if (options.grep) {
      this.grep(new RegExp(options.grep));
    }
    if (options.fgrep) {
      this.fgrep(options.fgrep);
    }
    this.suite = new exports.Suite('', new exports.Context());
    this.ui(options.ui);
    this.bail(options.bail);
    this.reporter(options.reporter, options.reporterOptions);
    if (typeof options.timeout !== 'undefined' && options.timeout !== null) {
      this.timeout(options.timeout);
    }
    if (typeof options.retries !== 'undefined' && options.retries !== null) {
      this.retries(options.retries);
    }
    this.useColors(options.useColors);
    if (options.enableTimeouts !== null) {
      this.enableTimeouts(options.enableTimeouts);
    }
    if (options.slow) {
      this.slow(options.slow);
    }
  }
  
  /**
   * Enable or disable bailing on the first failure.
   *
   * @api public
   * @param {boolean} [bail]
   */
  Mocha.prototype.bail = function (bail) {
    if (!arguments.length) {
      bail = true;
    }
    this.suite.bail(bail);
    return this;
  };
  
  /**
   * Add test `file`.
   *
   * @api public
   * @param {string} file
   */
  Mocha.prototype.addFile = function (file) {
    this.files.push(file);
    return this;
  };
  
  /**
   * Set reporter to `reporter`, defaults to "spec".
   *
   * @param {String|Function} reporter name or constructor
   * @param {Object} reporterOptions optional options
   * @api public
   * @param {string|Function} reporter name or constructor
   * @param {Object} reporterOptions optional options
   */
  Mocha.prototype.reporter = function (reporter, reporterOptions) {
    if (typeof reporter === 'function') {
      this._reporter = reporter;
    } else {
      reporter = reporter || 'spec';
      var _reporter;
      // Try to load a built-in reporter.
      if (reporters[reporter]) {
        _reporter = reporters[reporter];
      }
      // Try to load reporters from process.cwd() and node_modules
      if (!_reporter) {
        try {
          _reporter = require(reporter);
        } catch (err) {
          err.message.indexOf('Cannot find module') !== -1
            ? console.warn('"' + reporter + '" reporter not found')
            : console.warn('"' + reporter + '" reporter blew up with error:\n' + err.stack);
        }
      }
      if (!_reporter && reporter === 'teamcity') {
        console.warn('The Teamcity reporter was moved to a package named ' +
          'mocha-teamcity-reporter ' +
          '(https://npmjs.org/package/mocha-teamcity-reporter).');
      }
      if (!_reporter) {
        throw new Error('invalid reporter "' + reporter + '"');
      }
      this._reporter = _reporter;
    }
    this.options.reporterOptions = reporterOptions;
    return this;
  };
  
  /**
   * Set test UI `name`, defaults to "bdd".
   *
   * @api public
   * @param {string} bdd
   */
  Mocha.prototype.ui = function (name) {
    name = name || 'bdd';
    this._ui = exports.interfaces[name];
    if (!this._ui) {
      try {
        this._ui = require(name);
      } catch (err) {
        throw new Error('invalid interface "' + name + '"');
      }
    }
    this._ui = this._ui(this.suite);
  
    this.suite.on('pre-require', function (context) {
      exports.afterEach = context.afterEach || context.teardown;
      exports.after = context.after || context.suiteTeardown;
      exports.beforeEach = context.beforeEach || context.setup;
      exports.before = context.before || context.suiteSetup;
      exports.describe = context.describe || context.suite;
      exports.it = context.it || context.test;
      exports.setup = context.setup || context.beforeEach;
      exports.suiteSetup = context.suiteSetup || context.before;
      exports.suiteTeardown = context.suiteTeardown || context.after;
      exports.suite = context.suite || context.describe;
      exports.teardown = context.teardown || context.afterEach;
      exports.test = context.test || context.it;
      exports.run = context.run;
    });
  
    return this;
  };
  
  /**
   * Load registered files.
   *
   * @api private
   */
  Mocha.prototype.loadFiles = function (fn) {
    var self = this;
    var suite = this.suite;
    this.files.forEach(function (file) {
      file = path.resolve(file);
      suite.emit('pre-require', global, file, self);
      suite.emit('require', require(file), file, self);
      suite.emit('post-require', global, file, self);
    });
    fn && fn();
  };
  
  /**
   * Enable growl support.
   *
   * @api private
   */
  Mocha.prototype._growl = function (runner, reporter) {
    var notify = require('growl');
  
    runner.on('end', function () {
      var stats = reporter.stats;
      if (stats.failures) {
        var msg = stats.failures + ' of ' + runner.total + ' tests failed';
        notify(msg, { name: 'mocha', title: 'Failed', image: image('error') });
      } else {
        notify(stats.passes + ' tests passed in ' + stats.duration + 'ms', {
          name: 'mocha',
          title: 'Passed',
          image: image('ok')
        });
      }
    });
  };
  
  /**
   * Escape string and add it to grep as a regexp.
   *
   * @api public
   * @param str
   * @returns {Mocha}
   */
  Mocha.prototype.fgrep = function (str) {
    return this.grep(new RegExp(escapeRe(str)));
  };
  
  /**
   * Add regexp to grep, if `re` is a string it is escaped.
   *
   * @param {RegExp|String} re
   * @return {Mocha}
   * @api public
   * @param {RegExp|string} re
   * @return {Mocha}
   */
  Mocha.prototype.grep = function (re) {
    if (utils.isString(re)) {
      // extract args if it's regex-like, i.e: [string, pattern, flag]
      var arg = re.match(/^\/(.*)\/(g|i|)$|.*/);
      this.options.grep = new RegExp(arg[1] || arg[0], arg[2]);
    } else {
      this.options.grep = re;
    }
    return this;
  };
  /**
   * Invert `.grep()` matches.
   *
   * @return {Mocha}
   * @api public
   */
  Mocha.prototype.invert = function () {
    this.options.invert = true;
    return this;
  };
  
  /**
   * Ignore global leaks.
   *
   * @param {Boolean} ignore
   * @return {Mocha}
   * @api public
   * @param {boolean} ignore
   * @return {Mocha}
   */
  Mocha.prototype.ignoreLeaks = function (ignore) {
    this.options.ignoreLeaks = Boolean(ignore);
    return this;
  };
  
  /**
   * Enable global leak checking.
   *
   * @return {Mocha}
   * @api public
   */
  Mocha.prototype.checkLeaks = function () {
    this.options.ignoreLeaks = false;
    return this;
  };
  
  /**
   * Display long stack-trace on failing
   *
   * @return {Mocha}
   * @api public
   */
  Mocha.prototype.fullTrace = function () {
    this.options.fullStackTrace = true;
    return this;
  };
  
  /**
   * Enable growl support.
   *
   * @return {Mocha}
   * @api public
   */
  Mocha.prototype.growl = function () {
    this.options.growl = true;
    return this;
  };
  
  /**
   * Ignore `globals` array or string.
   *
   * @param {Array|String} globals
   * @return {Mocha}
   * @api public
   * @param {Array|string} globals
   * @return {Mocha}
   */
  Mocha.prototype.globals = function (globals) {
    this.options.globals = (this.options.globals || []).concat(globals);
    return this;
  };
  
  /**
   * Emit color output.
   *
   * @param {Boolean} colors
   * @return {Mocha}
   * @api public
   * @param {boolean} colors
   * @return {Mocha}
   */
  Mocha.prototype.useColors = function (colors) {
    if (colors !== undefined) {
      this.options.useColors = colors;
    }
    return this;
  };
  
  /**
   * Use inline diffs rather than +/-.
   *
   * @param {Boolean} inlineDiffs
   * @return {Mocha}
   * @api public
   * @param {boolean} inlineDiffs
   * @return {Mocha}
   */
  Mocha.prototype.useInlineDiffs = function (inlineDiffs) {
    this.options.useInlineDiffs = inlineDiffs !== undefined && inlineDiffs;
    return this;
  };
  
  /**
   * Set the timeout in milliseconds.
   *
   * @param {Number} timeout
   * @return {Mocha}
   * @api public
   * @param {number} timeout
   * @return {Mocha}
   */
  Mocha.prototype.timeout = function (timeout) {
    this.suite.timeout(timeout);
    return this;
  };
  
  /**
   * Set the number of times to retry failed tests.
   *
   * @param {Number} retry times
   * @return {Mocha}
   * @api public
   */
  Mocha.prototype.retries = function (n) {
    this.suite.retries(n);
    return this;
  };
  
  /**
   * Set slowness threshold in milliseconds.
   *
   * @param {Number} slow
   * @return {Mocha}
   * @api public
   * @param {number} slow
   * @return {Mocha}
   */
  Mocha.prototype.slow = function (slow) {
    this.suite.slow(slow);
    return this;
  };
  
  /**
   * Enable timeouts.
   *
   * @param {Boolean} enabled
   * @return {Mocha}
   * @api public
   * @param {boolean} enabled
   * @return {Mocha}
   */
  Mocha.prototype.enableTimeouts = function (enabled) {
    this.suite.enableTimeouts(arguments.length && enabled !== undefined ? enabled : true);
    return this;
  };
  
  /**
   * Makes all tests async (accepting a callback)
   *
   * @return {Mocha}
   * @api public
   */
  Mocha.prototype.asyncOnly = function () {
    this.options.asyncOnly = true;
    return this;
  };
  
  /**
   * Disable syntax highlighting (in browser).
   *
   * @api public
   */
  Mocha.prototype.noHighlighting = function () {
    this.options.noHighlighting = true;
    return this;
  };
  
  /**
   * Enable uncaught errors to propagate (in browser).
   *
   * @return {Mocha}
   * @api public
   */
  Mocha.prototype.allowUncaught = function () {
    this.options.allowUncaught = true;
    return this;
  };
  
  /**
   * Delay root suite execution.
   * @returns {Mocha}
   */
  Mocha.prototype.delay = function delay () {
    this.options.delay = true;
    return this;
  };
  
  /**
   * Run tests and invoke `fn()` when complete.
   *
   * @api public
   * @param {Function} fn
   * @return {Runner}
   */
  Mocha.prototype.run = function (fn) {
    if (this.files.length) {
      this.loadFiles();
    }
    var suite = this.suite;
    var options = this.options;
    options.files = this.files;
    var runner = new exports.Runner(suite, options.delay);
    var reporter = new this._reporter(runner, options);
    runner.ignoreLeaks = options.ignoreLeaks !== false;
    runner.fullStackTrace = options.fullStackTrace;
    runner.hasOnly = options.hasOnly;
    runner.asyncOnly = options.asyncOnly;
    runner.allowUncaught = options.allowUncaught;
    if (options.grep) {
      runner.grep(options.grep, options.invert);
    }
    if (options.globals) {
      runner.globals(options.globals);
    }
    if (options.growl) {
      this._growl(runner, reporter);
    }
    if (options.useColors !== undefined) {
      exports.reporters.Base.useColors = options.useColors;
    }
    exports.reporters.Base.inlineDiffs = options.useInlineDiffs;
  
    function done (failures) {
      if (reporter.done) {
        reporter.done(failures, fn);
      } else {
        fn && fn(failures);
      }
    }
  
    return runner.run(done);
  };
  
  }).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},"/lib")
  },{"./context":6,"./hook":7,"./interfaces":11,"./reporters":21,"./runnable":33,"./runner":34,"./suite":35,"./test":36,"./utils":38,"_process":67,"escape-string-regexp":47,"growl":49,"path":42}],15:[function(require,module,exports){
  'use strict';
  
  /**
   * Helpers.
   */
  
  var s = 1000;
  var m = s * 60;
  var h = m * 60;
  var d = h * 24;
  var y = d * 365.25;
  
  /**
   * Parse or format the given `val`.
   *
   * Options:
   *
   *  - `long` verbose formatting [false]
   *
   * @api public
   * @param {string|number} val
   * @param {Object} options
   * @return {string|number}
   */
  module.exports = function (val, options) {
    options = options || {};
    if (typeof val === 'string') {
      return parse(val);
    }
    // https://github.com/mochajs/mocha/pull/1035
    return options['long'] ? longFormat(val) : shortFormat(val);
  };
  
  /**
   * Parse the given `str` and return milliseconds.
   *
   * @api private
   * @param {string} str
   * @return {number}
   */
  function parse (str) {
    var match = (/^((?:\d+)?\.?\d+) *(ms|seconds?|s|minutes?|m|hours?|h|days?|d|years?|y)?$/i).exec(str);
    if (!match) {
      return;
    }
    var n = parseFloat(match[1]);
    var type = (match[2] || 'ms').toLowerCase();
    switch (type) {
      case 'years':
      case 'year':
      case 'y':
        return n * y;
      case 'days':
      case 'day':
      case 'd':
        return n * d;
      case 'hours':
      case 'hour':
      case 'h':
        return n * h;
      case 'minutes':
      case 'minute':
      case 'm':
        return n * m;
      case 'seconds':
      case 'second':
      case 's':
        return n * s;
      case 'ms':
        return n;
      default:
        // No default case
    }
  }
  
  /**
   * Short format for `ms`.
   *
   * @api private
   * @param {number} ms
   * @return {string}
   */
  function shortFormat (ms) {
    if (ms >= d) {
      return Math.round(ms / d) + 'd';
    }
    if (ms >= h) {
      return Math.round(ms / h) + 'h';
    }
    if (ms >= m) {
      return Math.round(ms / m) + 'm';
    }
    if (ms >= s) {
      return Math.round(ms / s) + 's';
    }
    return ms + 'ms';
  }
  
  /**
   * Long format for `ms`.
   *
   * @api private
   * @param {number} ms
   * @return {string}
   */
  function longFormat (ms) {
    return plural(ms, d, 'day') ||
      plural(ms, h, 'hour') ||
      plural(ms, m, 'minute') ||
      plural(ms, s, 'second') ||
      ms + ' ms';
  }
  
  /**
   * Pluralization helper.
   *
   * @api private
   * @param {number} ms
   * @param {number} n
   * @param {string} name
   */
  function plural (ms, n, name) {
    if (ms < n) {
      return;
    }
    if (ms < n * 1.5) {
      return Math.floor(ms / n) + ' ' + name;
    }
    return Math.ceil(ms / n) + ' ' + name + 's';
  }
  
  },{}],16:[function(require,module,exports){
  'use strict';
  
  /**
   * Expose `Pending`.
   */
  
  module.exports = Pending;
  
  /**
   * Initialize a new `Pending` error with the given message.
   *
   * @param {string} message
   */
  function Pending (message) {
    this.message = message;
  }
  
  },{}],17:[function(require,module,exports){
  (function (process,global){
  'use strict';
  
  /**
   * Module dependencies.
   */
  
  var tty = require('tty');
  var diff = require('diff');
  var ms = require('../ms');
  var utils = require('../utils');
  var supportsColor = process.browser ? null : require('supports-color');
  
  /**
   * Expose `Base`.
   */
  
  exports = module.exports = Base;
  
  /**
   * Save timer references to avoid Sinon interfering.
   * See: https://github.com/mochajs/mocha/issues/237
   */
  
  /* eslint-disable no-unused-vars, no-native-reassign */
  var Date = global.Date;
  var setTimeout = global.setTimeout;
  var setInterval = global.setInterval;
  var clearTimeout = global.clearTimeout;
  var clearInterval = global.clearInterval;
  /* eslint-enable no-unused-vars, no-native-reassign */
  
  /**
   * Check if both stdio streams are associated with a tty.
   */
  
  var isatty = tty.isatty(1) && tty.isatty(2);
  
  /**
   * Enable coloring by default, except in the browser interface.
   */
  
  exports.useColors = !process.browser && (supportsColor || (process.env.MOCHA_COLORS !== undefined));
  
  /**
   * Inline diffs instead of +/-
   */
  
  exports.inlineDiffs = false;
  
  /**
   * Default color map.
   */
  
  exports.colors = {
    pass: 90,
    fail: 31,
    'bright pass': 92,
    'bright fail': 91,
    'bright yellow': 93,
    pending: 36,
    suite: 0,
    'error title': 0,
    'error message': 31,
    'error stack': 90,
    checkmark: 32,
    fast: 90,
    medium: 33,
    slow: 31,
    green: 32,
    light: 90,
    'diff gutter': 90,
    'diff added': 32,
    'diff removed': 31
  };
  
  /**
   * Default symbol map.
   */
  
  exports.symbols = {
    ok: '✓',
    err: '✖',
    dot: '․',
    comma: ',',
    bang: '!'
  };
  
  // With node.js on Windows: use symbols available in terminal default fonts
  if (process.platform === 'win32') {
    exports.symbols.ok = '\u221A';
    exports.symbols.err = '\u00D7';
    exports.symbols.dot = '.';
  }
  
  /**
   * Color `str` with the given `type`,
   * allowing colors to be disabled,
   * as well as user-defined color
   * schemes.
   *
   * @param {string} type
   * @param {string} str
   * @return {string}
   * @api private
   */
  var color = exports.color = function (type, str) {
    if (!exports.useColors) {
      return String(str);
    }
    return '\u001b[' + exports.colors[type] + 'm' + str + '\u001b[0m';
  };
  
  /**
   * Expose term window size, with some defaults for when stderr is not a tty.
   */
  
  exports.window = {
    width: 75
  };
  
  if (isatty) {
    exports.window.width = process.stdout.getWindowSize
        ? process.stdout.getWindowSize(1)[0]
        : tty.getWindowSize()[1];
  }
  
  /**
   * Expose some basic cursor interactions that are common among reporters.
   */
  
  exports.cursor = {
    hide: function () {
      isatty && process.stdout.write('\u001b[?25l');
    },
  
    show: function () {
      isatty && process.stdout.write('\u001b[?25h');
    },
  
    deleteLine: function () {
      isatty && process.stdout.write('\u001b[2K');
    },
  
    beginningOfLine: function () {
      isatty && process.stdout.write('\u001b[0G');
    },
  
    CR: function () {
      if (isatty) {
        exports.cursor.deleteLine();
        exports.cursor.beginningOfLine();
      } else {
        process.stdout.write('\r');
      }
    }
  };
  
  /**
   * Outut the given `failures` as a list.
   *
   * @param {Array} failures
   * @api public
   */
  
  exports.list = function (failures) {
    console.log();
    failures.forEach(function (test, i) {
      // format
      var fmt = color('error title', '  %s) %s:\n') +
        color('error message', '     %s') +
        color('error stack', '\n%s\n');
  
      // msg
      var msg;
      var err = test.err;
      var message;
      if (err.message && typeof err.message.toString === 'function') {
        message = err.message + '';
      } else if (typeof err.inspect === 'function') {
        message = err.inspect() + '';
      } else {
        message = '';
      }
      var stack = err.stack || message;
      var index = message ? stack.indexOf(message) : -1;
      var actual = err.actual;
      var expected = err.expected;
      var escape = true;
  
      if (index === -1) {
        msg = message;
      } else {
        index += message.length;
        msg = stack.slice(0, index);
        // remove msg from stack
        stack = stack.slice(index + 1);
      }
  
      // uncaught
      if (err.uncaught) {
        msg = 'Uncaught ' + msg;
      }
      // explicitly show diff
      if (err.showDiff !== false && sameType(actual, expected) && expected !== undefined) {
        escape = false;
        if (!(utils.isString(actual) && utils.isString(expected))) {
          err.actual = actual = utils.stringify(actual);
          err.expected = expected = utils.stringify(expected);
        }
  
        fmt = color('error title', '  %s) %s:\n%s') + color('error stack', '\n%s\n');
        var match = message.match(/^([^:]+): expected/);
        msg = '\n      ' + color('error message', match ? match[1] : msg);
  
        if (exports.inlineDiffs) {
          msg += inlineDiff(err, escape);
        } else {
          msg += unifiedDiff(err, escape);
        }
      }
  
      // indent stack trace
      stack = stack.replace(/^/gm, '  ');
  
      console.log(fmt, (i + 1), test.fullTitle(), msg, stack);
    });
  };
  
  /**
   * Initialize a new `Base` reporter.
   *
   * All other reporters generally
   * inherit from this reporter, providing
   * stats such as test duration, number
   * of tests passed / failed etc.
   *
   * @param {Runner} runner
   * @api public
   */
  
  function Base (runner) {
    var stats = this.stats = { suites: 0, tests: 0, passes: 0, pending: 0, failures: 0 };
    var failures = this.failures = [];
  
    if (!runner) {
      return;
    }
    this.runner = runner;
  
    runner.stats = stats;
  
    runner.on('start', function () {
      stats.start = new Date();
    });
  
    runner.on('suite', function (suite) {
      stats.suites = stats.suites || 0;
      suite.root || stats.suites++;
    });
  
    runner.on('test end', function () {
      stats.tests = stats.tests || 0;
      stats.tests++;
    });
  
    runner.on('pass', function (test) {
      stats.passes = stats.passes || 0;
  
      if (test.duration > test.slow()) {
        test.speed = 'slow';
      } else if (test.duration > test.slow() / 2) {
        test.speed = 'medium';
      } else {
        test.speed = 'fast';
      }
  
      stats.passes++;
    });
  
    runner.on('fail', function (test, err) {
      stats.failures = stats.failures || 0;
      stats.failures++;
      test.err = err;
      failures.push(test);
    });
  
    runner.on('end', function () {
      stats.end = new Date();
      stats.duration = new Date() - stats.start;
    });
  
    runner.on('pending', function () {
      stats.pending++;
    });
  }
  
  /**
   * Output common epilogue used by many of
   * the bundled reporters.
   *
   * @api public
   */
  Base.prototype.epilogue = function () {
    var stats = this.stats;
    var fmt;
  
    console.log();
  
    // passes
    fmt = color('bright pass', ' ') +
      color('green', ' %d passing') +
      color('light', ' (%s)');
  
    console.log(fmt,
      stats.passes || 0,
      ms(stats.duration));
  
    // pending
    if (stats.pending) {
      fmt = color('pending', ' ') +
        color('pending', ' %d pending');
  
      console.log(fmt, stats.pending);
    }
  
    // failures
    if (stats.failures) {
      fmt = color('fail', '  %d failing');
  
      console.log(fmt, stats.failures);
  
      Base.list(this.failures);
      console.log();
    }
  
    console.log();
  };
  
  /**
   * Pad the given `str` to `len`.
   *
   * @api private
   * @param {string} str
   * @param {string} len
   * @return {string}
   */
  function pad (str, len) {
    str = String(str);
    return Array(len - str.length + 1).join(' ') + str;
  }
  
  /**
   * Returns an inline diff between 2 strings with coloured ANSI output
   *
   * @api private
   * @param {Error} err with actual/expected
   * @param {boolean} escape
   * @return {string} Diff
   */
  function inlineDiff (err, escape) {
    var msg = errorDiff(err, 'WordsWithSpace', escape);
  
    // linenos
    var lines = msg.split('\n');
    if (lines.length > 4) {
      var width = String(lines.length).length;
      msg = lines.map(function (str, i) {
        return pad(++i, width) + ' |' + ' ' + str;
      }).join('\n');
    }
  
    // legend
    msg = '\n' +
      color('diff removed', 'actual') +
      ' ' +
      color('diff added', 'expected') +
      '\n\n' +
      msg +
      '\n';
  
    // indent
    msg = msg.replace(/^/gm, '      ');
    return msg;
  }
  
  /**
   * Returns a unified diff between two strings.
   *
   * @api private
   * @param {Error} err with actual/expected
   * @param {boolean} escape
   * @return {string} The diff.
   */
  function unifiedDiff (err, escape) {
    var indent = '      ';
    function cleanUp (line) {
      if (escape) {
        line = escapeInvisibles(line);
      }
      if (line[0] === '+') {
        return indent + colorLines('diff added', line);
      }
      if (line[0] === '-') {
        return indent + colorLines('diff removed', line);
      }
      if (line.match(/@@/)) {
        return null;
      }
      if (line.match(/\\ No newline/)) {
        return null;
      }
      return indent + line;
    }
    function notBlank (line) {
      return typeof line !== 'undefined' && line !== null;
    }
    var msg = diff.createPatch('string', err.actual, err.expected);
    var lines = msg.split('\n').splice(4);
    return '\n      ' +
      colorLines('diff added', '+ expected') + ' ' +
      colorLines('diff removed', '- actual') +
      '\n\n' +
      lines.map(cleanUp).filter(notBlank).join('\n');
  }
  
  /**
   * Return a character diff for `err`.
   *
   * @api private
   * @param {Error} err
   * @param {string} type
   * @param {boolean} escape
   * @return {string}
   */
  function errorDiff (err, type, escape) {
    var actual = escape ? escapeInvisibles(err.actual) : err.actual;
    var expected = escape ? escapeInvisibles(err.expected) : err.expected;
    return diff['diff' + type](actual, expected).map(function (str) {
      if (str.added) {
        return colorLines('diff added', str.value);
      }
      if (str.removed) {
        return colorLines('diff removed', str.value);
      }
      return str.value;
    }).join('');
  }
  
  /**
   * Returns a string with all invisible characters in plain text
   *
   * @api private
   * @param {string} line
   * @return {string}
   */
  function escapeInvisibles (line) {
    return line.replace(/\t/g, '<tab>')
      .replace(/\r/g, '<CR>')
      .replace(/\n/g, '<LF>\n');
  }
  
  /**
   * Color lines for `str`, using the color `name`.
   *
   * @api private
   * @param {string} name
   * @param {string} str
   * @return {string}
   */
  function colorLines (name, str) {
    return str.split('\n').map(function (str) {
      return color(name, str);
    }).join('\n');
  }
  
  /**
   * Object#toString reference.
   */
  var objToString = Object.prototype.toString;
  
  /**
   * Check that a / b have the same type.
   *
   * @api private
   * @param {Object} a
   * @param {Object} b
   * @return {boolean}
   */
  function sameType (a, b) {
    return objToString.call(a) === objToString.call(b);
  }
  
  }).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
  },{"../ms":15,"../utils":38,"_process":67,"diff":46,"supports-color":42,"tty":5}],18:[function(require,module,exports){
  'use strict';
  
  /**
   * Module dependencies.
   */
  
  var Base = require('./base');
  var utils = require('../utils');
  
  /**
   * Expose `Doc`.
   */
  
  exports = module.exports = Doc;
  
  /**
   * Initialize a new `Doc` reporter.
   *
   * @param {Runner} runner
   * @api public
   */
  function Doc (runner) {
    Base.call(this, runner);
  
    var indents = 2;
  
    function indent () {
      return Array(indents).join('  ');
    }
  
    runner.on('suite', function (suite) {
      if (suite.root) {
        return;
      }
      ++indents;
      console.log('%s<section class="suite">', indent());
      ++indents;
      console.log('%s<h1>%s</h1>', indent(), utils.escape(suite.title));
      console.log('%s<dl>', indent());
    });
  
    runner.on('suite end', function (suite) {
      if (suite.root) {
        return;
      }
      console.log('%s</dl>', indent());
      --indents;
      console.log('%s</section>', indent());
      --indents;
    });
  
    runner.on('pass', function (test) {
      console.log('%s  <dt>%s</dt>', indent(), utils.escape(test.title));
      var code = utils.escape(utils.clean(test.body));
      console.log('%s  <dd><pre><code>%s</code></pre></dd>', indent(), code);
    });
  
    runner.on('fail', function (test, err) {
      console.log('%s  <dt class="error">%s</dt>', indent(), utils.escape(test.title));
      var code = utils.escape(utils.clean(test.body));
      console.log('%s  <dd class="error"><pre><code>%s</code></pre></dd>', indent(), code);
      console.log('%s  <dd class="error">%s</dd>', indent(), utils.escape(err));
    });
  }
  
  },{"../utils":38,"./base":17}],19:[function(require,module,exports){
  (function (process){
  'use strict';
  
  /**
   * Module dependencies.
   */
  
  var Base = require('./base');
  var inherits = require('../utils').inherits;
  var color = Base.color;
  
  /**
   * Expose `Dot`.
   */
  
  exports = module.exports = Dot;
  
  /**
   * Initialize a new `Dot` matrix test reporter.
   *
   * @api public
   * @param {Runner} runner
   */
  function Dot (runner) {
    Base.call(this, runner);
  
    var self = this;
    var width = Base.window.width * 0.75 | 0;
    var n = -1;
  
    runner.on('start', function () {
      process.stdout.write('\n');
    });
  
    runner.on('pending', function () {
      if (++n % width === 0) {
        process.stdout.write('\n  ');
      }
      process.stdout.write(color('pending', Base.symbols.comma));
    });
  
    runner.on('pass', function (test) {
      if (++n % width === 0) {
        process.stdout.write('\n  ');
      }
      if (test.speed === 'slow') {
        process.stdout.write(color('bright yellow', Base.symbols.dot));
      } else {
        process.stdout.write(color(test.speed, Base.symbols.dot));
      }
    });
  
    runner.on('fail', function () {
      if (++n % width === 0) {
        process.stdout.write('\n  ');
      }
      process.stdout.write(color('fail', Base.symbols.bang));
    });
  
    runner.on('end', function () {
      console.log();
      self.epilogue();
    });
  }
  
  /**
   * Inherit from `Base.prototype`.
   */
  inherits(Dot, Base);
  
  }).call(this,require('_process'))
  },{"../utils":38,"./base":17,"_process":67}],20:[function(require,module,exports){
  (function (global){
  'use strict';
  
  /* eslint-env browser */
  
  /**
   * Module dependencies.
   */
  
  var Base = require('./base');
  var utils = require('../utils');
  var Progress = require('../browser/progress');
  var escapeRe = require('escape-string-regexp');
  var escape = utils.escape;
  
  /**
   * Save timer references to avoid Sinon interfering (see GH-237).
   */
  
  /* eslint-disable no-unused-vars, no-native-reassign */
  var Date = global.Date;
  var setTimeout = global.setTimeout;
  var setInterval = global.setInterval;
  var clearTimeout = global.clearTimeout;
  var clearInterval = global.clearInterval;
  /* eslint-enable no-unused-vars, no-native-reassign */
  
  /**
   * Expose `HTML`.
   */
  
  exports = module.exports = HTML;
  
  /**
   * Stats template.
   */
  
  var statsTemplate = '<ul id="mocha-stats">' +
    '<li class="progress"><canvas width="40" height="40"></canvas></li>' +
    '<li class="passes"><a href="javascript:void(0);">passes:</a> <em>0</em></li>' +
    '<li class="failures"><a href="javascript:void(0);">failures:</a> <em>0</em></li>' +
    '<li class="duration">duration: <em>0</em>s</li>' +
    '</ul>';
  
  /**
   * Initialize a new `HTML` reporter.
   *
   * @api public
   * @param {Runner} runner
   */
  function HTML (runner) {
    Base.call(this, runner);
  
    var self = this;
    var stats = this.stats;
    var stat = fragment(statsTemplate);
    var items = stat.getElementsByTagName('li');
    var passes = items[1].getElementsByTagName('em')[0];
    var passesLink = items[1].getElementsByTagName('a')[0];
    var failures = items[2].getElementsByTagName('em')[0];
    var failuresLink = items[2].getElementsByTagName('a')[0];
    var duration = items[3].getElementsByTagName('em')[0];
    var canvas = stat.getElementsByTagName('canvas')[0];
    var report = fragment('<ul id="mocha-report"></ul>');
    var stack = [report];
    var progress;
    var ctx;
    var root = document.getElementById('mocha');
  
    if (canvas.getContext) {
      var ratio = window.devicePixelRatio || 1;
      canvas.style.width = canvas.width;
      canvas.style.height = canvas.height;
      canvas.width *= ratio;
      canvas.height *= ratio;
      ctx = canvas.getContext('2d');
      ctx.scale(ratio, ratio);
      progress = new Progress();
    }
  
    if (!root) {
      return error('#mocha div missing, add it to your document');
    }
  
    // pass toggle
    on(passesLink, 'click', function (evt) {
      evt.preventDefault();
      unhide();
      var name = (/pass/).test(report.className) ? '' : ' pass';
      report.className = report.className.replace(/fail|pass/g, '') + name;
      if (report.className.trim()) {
        hideSuitesWithout('test pass');
      }
    });
  
    // failure toggle
    on(failuresLink, 'click', function (evt) {
      evt.preventDefault();
      unhide();
      var name = (/fail/).test(report.className) ? '' : ' fail';
      report.className = report.className.replace(/fail|pass/g, '') + name;
      if (report.className.trim()) {
        hideSuitesWithout('test fail');
      }
    });
  
    root.appendChild(stat);
    root.appendChild(report);
  
    if (progress) {
      progress.size(40);
    }
  
    runner.on('suite', function (suite) {
      if (suite.root) {
        return;
      }
  
      // suite
      var url = self.suiteURL(suite);
      var el = fragment('<li class="suite"><h1><a href="%s">%s</a></h1></li>', url, escape(suite.title));
  
      // container
      stack[0].appendChild(el);
      stack.unshift(document.createElement('ul'));
      el.appendChild(stack[0]);
    });
  
    runner.on('suite end', function (suite) {
      if (suite.root) {
        updateStats();
        return;
      }
      stack.shift();
    });
  
    runner.on('pass', function (test) {
      var url = self.testURL(test);
      var markup = '<li class="test pass %e"><h2>%e<span class="duration">%ems</span> ' +
        '<a href="%s" class="replay">‣</a></h2></li>';
      var el = fragment(markup, test.speed, test.title, test.duration, url);
      self.addCodeToggle(el, test.body);
      appendToStack(el);
      updateStats();
    });
  
    runner.on('fail', function (test) {
      var el = fragment('<li class="test fail"><h2>%e <a href="%e" class="replay">‣</a></h2></li>',
        test.title, self.testURL(test));
      var stackString; // Note: Includes leading newline
      var message = test.err.toString();
  
      // <=IE7 stringifies to [Object Error]. Since it can be overloaded, we
      // check for the result of the stringifying.
      if (message === '[object Error]') {
        message = test.err.message;
      }
  
      if (test.err.stack) {
        var indexOfMessage = test.err.stack.indexOf(test.err.message);
        if (indexOfMessage === -1) {
          stackString = test.err.stack;
        } else {
          stackString = test.err.stack.substr(test.err.message.length + indexOfMessage);
        }
      } else if (test.err.sourceURL && test.err.line !== undefined) {
        // Safari doesn't give you a stack. Let's at least provide a source line.
        stackString = '\n(' + test.err.sourceURL + ':' + test.err.line + ')';
      }
  
      stackString = stackString || '';
  
      if (test.err.htmlMessage && stackString) {
        el.appendChild(fragment('<div class="html-error">%s\n<pre class="error">%e</pre></div>',
          test.err.htmlMessage, stackString));
      } else if (test.err.htmlMessage) {
        el.appendChild(fragment('<div class="html-error">%s</div>', test.err.htmlMessage));
      } else {
        el.appendChild(fragment('<pre class="error">%e%e</pre>', message, stackString));
      }
  
      self.addCodeToggle(el, test.body);
      appendToStack(el);
      updateStats();
    });
  
    runner.on('pending', function (test) {
      var el = fragment('<li class="test pass pending"><h2>%e</h2></li>', test.title);
      appendToStack(el);
      updateStats();
    });
  
    function appendToStack (el) {
      // Don't call .appendChild if #mocha-report was already .shift()'ed off the stack.
      if (stack[0]) {
        stack[0].appendChild(el);
      }
    }
  
    function updateStats () {
      // TODO: add to stats
      var percent = stats.tests / runner.total * 100 | 0;
      if (progress) {
        progress.update(percent).draw(ctx);
      }
  
      // update stats
      var ms = new Date() - stats.start;
      text(passes, stats.passes);
      text(failures, stats.failures);
      text(duration, (ms / 1000).toFixed(2));
    }
  }
  
  /**
   * Makes a URL, preserving querystring ("search") parameters.
   *
   * @param {string} s
   * @return {string} A new URL.
   */
  function makeUrl (s) {
    var search = window.location.search;
  
    // Remove previous grep query parameter if present
    if (search) {
      search = search.replace(/[?&]grep=[^&\s]*/g, '').replace(/^&/, '?');
    }
  
    return window.location.pathname + (search ? search + '&' : '?') + 'grep=' + encodeURIComponent(escapeRe(s));
  }
  
  /**
   * Provide suite URL.
   *
   * @param {Object} [suite]
   */
  HTML.prototype.suiteURL = function (suite) {
    return makeUrl(suite.fullTitle());
  };
  
  /**
   * Provide test URL.
   *
   * @param {Object} [test]
   */
  HTML.prototype.testURL = function (test) {
    return makeUrl(test.fullTitle());
  };
  
  /**
   * Adds code toggle functionality for the provided test's list element.
   *
   * @param {HTMLLIElement} el
   * @param {string} contents
   */
  HTML.prototype.addCodeToggle = function (el, contents) {
    var h2 = el.getElementsByTagName('h2')[0];
  
    on(h2, 'click', function () {
      pre.style.display = pre.style.display === 'none' ? 'block' : 'none';
    });
  
    var pre = fragment('<pre><code>%e</code></pre>', utils.clean(contents));
    el.appendChild(pre);
    pre.style.display = 'none';
  };
  
  /**
   * Display error `msg`.
   *
   * @param {string} msg
   */
  function error (msg) {
    document.body.appendChild(fragment('<div id="mocha-error">%s</div>', msg));
  }
  
  /**
   * Return a DOM fragment from `html`.
   *
   * @param {string} html
   */
  function fragment (html) {
    var args = arguments;
    var div = document.createElement('div');
    var i = 1;
  
    div.innerHTML = html.replace(/%([se])/g, function (_, type) {
      switch (type) {
        case 's': return String(args[i++]);
        case 'e': return escape(args[i++]);
        // no default
      }
    });
  
    return div.firstChild;
  }
  
  /**
   * Check for suites that do not have elements
   * with `classname`, and hide them.
   *
   * @param {text} classname
   */
  function hideSuitesWithout (classname) {
    var suites = document.getElementsByClassName('suite');
    for (var i = 0; i < suites.length; i++) {
      var els = suites[i].getElementsByClassName(classname);
      if (!els.length) {
        suites[i].className += ' hidden';
      }
    }
  }
  
  /**
   * Unhide .hidden suites.
   */
  function unhide () {
    var els = document.getElementsByClassName('suite hidden');
    for (var i = 0; i < els.length; ++i) {
      els[i].className = els[i].className.replace('suite hidden', 'suite');
    }
  }
  
  /**
   * Set an element's text contents.
   *
   * @param {HTMLElement} el
   * @param {string} contents
   */
  function text (el, contents) {
    if (el.textContent) {
      el.textContent = contents;
    } else {
      el.innerText = contents;
    }
  }
  
  /**
   * Listen on `event` with callback `fn`.
   */
  function on (el, event, fn) {
    if (el.addEventListener) {
      el.addEventListener(event, fn, false);
    } else {
      el.attachEvent('on' + event, fn);
    }
  }
  
  }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
  },{"../browser/progress":4,"../utils":38,"./base":17,"escape-string-regexp":47}],21:[function(require,module,exports){
  'use strict';
  
  // Alias exports to a their normalized format Mocha#reporter to prevent a need
  // for dynamic (try/catch) requires, which Browserify doesn't handle.
  exports.Base = exports.base = require('./base');
  exports.Dot = exports.dot = require('./dot');
  exports.Doc = exports.doc = require('./doc');
  exports.TAP = exports.tap = require('./tap');
  exports.JSON = exports.json = require('./json');
  exports.HTML = exports.html = require('./html');
  exports.List = exports.list = require('./list');
  exports.Min = exports.min = require('./min');
  exports.Spec = exports.spec = require('./spec');
  exports.Nyan = exports.nyan = require('./nyan');
  exports.XUnit = exports.xunit = require('./xunit');
  exports.Markdown = exports.markdown = require('./markdown');
  exports.Progress = exports.progress = require('./progress');
  exports.Landing = exports.landing = require('./landing');
  exports.JSONStream = exports['json-stream'] = require('./json-stream');
  
  },{"./base":17,"./doc":18,"./dot":19,"./html":20,"./json":23,"./json-stream":22,"./landing":24,"./list":25,"./markdown":26,"./min":27,"./nyan":28,"./progress":29,"./spec":30,"./tap":31,"./xunit":32}],22:[function(require,module,exports){
  (function (process){
  'use strict';
  
  /**
   * Module dependencies.
   */
  
  var Base = require('./base');
  var JSON = require('json3');
  
  /**
   * Expose `List`.
   */
  
  exports = module.exports = List;
  
  /**
   * Initialize a new `List` test reporter.
   *
   * @api public
   * @param {Runner} runner
   */
  function List (runner) {
    Base.call(this, runner);
  
    var self = this;
    var total = runner.total;
  
    runner.on('start', function () {
      console.log(JSON.stringify(['start', { total: total }]));
    });
  
    runner.on('pass', function (test) {
      console.log(JSON.stringify(['pass', clean(test)]));
    });
  
    runner.on('fail', function (test, err) {
      test = clean(test);
      test.err = err.message;
      test.stack = err.stack || null;
      console.log(JSON.stringify(['fail', test]));
    });
  
    runner.on('end', function () {
      process.stdout.write(JSON.stringify(['end', self.stats]));
    });
  }
  
  /**
   * Return a plain-object representation of `test`
   * free of cyclic properties etc.
   *
   * @api private
   * @param {Object} test
   * @return {Object}
   */
  function clean (test) {
    return {
      title: test.title,
      fullTitle: test.fullTitle(),
      duration: test.duration,
      currentRetry: test.currentRetry()
    };
  }
  
  }).call(this,require('_process'))
  },{"./base":17,"_process":67,"json3":54}],23:[function(require,module,exports){
  (function (process){
  'use strict';
  
  /**
   * Module dependencies.
   */
  
  var Base = require('./base');
  
  /**
   * Expose `JSON`.
   */
  
  exports = module.exports = JSONReporter;
  
  /**
   * Initialize a new `JSON` reporter.
   *
   * @api public
   * @param {Runner} runner
   */
  function JSONReporter (runner) {
    Base.call(this, runner);
  
    var self = this;
    var tests = [];
    var pending = [];
    var failures = [];
    var passes = [];
  
    runner.on('test end', function (test) {
      tests.push(test);
    });
  
    runner.on('pass', function (test) {
      passes.push(test);
    });
  
    runner.on('fail', function (test) {
      failures.push(test);
    });
  
    runner.on('pending', function (test) {
      pending.push(test);
    });
  
    runner.on('end', function () {
      var obj = {
        stats: self.stats,
        tests: tests.map(clean),
        pending: pending.map(clean),
        failures: failures.map(clean),
        passes: passes.map(clean)
      };
  
      runner.testResults = obj;
  
      process.stdout.write(JSON.stringify(obj, null, 2));
    });
  }
  
  /**
   * Return a plain-object representation of `test`
   * free of cyclic properties etc.
   *
   * @api private
   * @param {Object} test
   * @return {Object}
   */
  function clean (test) {
    return {
      title: test.title,
      fullTitle: test.fullTitle(),
      duration: test.duration,
      currentRetry: test.currentRetry(),
      err: errorJSON(test.err || {})
    };
  }
  
  /**
   * Transform `error` into a JSON object.
   *
   * @api private
   * @param {Error} err
   * @return {Object}
   */
  function errorJSON (err) {
    var res = {};
    Object.getOwnPropertyNames(err).forEach(function (key) {
      res[key] = err[key];
    }, err);
    return res;
  }
  
  }).call(this,require('_process'))
  },{"./base":17,"_process":67}],24:[function(require,module,exports){
  (function (process){
  'use strict';
  
  /**
   * Module dependencies.
   */
  
  var Base = require('./base');
  var inherits = require('../utils').inherits;
  var cursor = Base.cursor;
  var color = Base.color;
  
  /**
   * Expose `Landing`.
   */
  
  exports = module.exports = Landing;
  
  /**
   * Airplane color.
   */
  
  Base.colors.plane = 0;
  
  /**
   * Airplane crash color.
   */
  
  Base.colors['plane crash'] = 31;
  
  /**
   * Runway color.
   */
  
  Base.colors.runway = 90;
  
  /**
   * Initialize a new `Landing` reporter.
   *
   * @api public
   * @param {Runner} runner
   */
  function Landing (runner) {
    Base.call(this, runner);
  
    var self = this;
    var width = Base.window.width * 0.75 | 0;
    var total = runner.total;
    var stream = process.stdout;
    var plane = color('plane', '✈');
    var crashed = -1;
    var n = 0;
  
    function runway () {
      var buf = Array(width).join('-');
      return '  ' + color('runway', buf);
    }
  
    runner.on('start', function () {
      stream.write('\n\n\n  ');
      cursor.hide();
    });
  
    runner.on('test end', function (test) {
      // check if the plane crashed
      var col = crashed === -1 ? width * ++n / total | 0 : crashed;
  
      // show the crash
      if (test.state === 'failed') {
        plane = color('plane crash', '✈');
        crashed = col;
      }
  
      // render landing strip
      stream.write('\u001b[' + (width + 1) + 'D\u001b[2A');
      stream.write(runway());
      stream.write('\n  ');
      stream.write(color('runway', Array(col).join('⋅')));
      stream.write(plane);
      stream.write(color('runway', Array(width - col).join('⋅') + '\n'));
      stream.write(runway());
      stream.write('\u001b[0m');
    });
  
    runner.on('end', function () {
      cursor.show();
      console.log();
      self.epilogue();
    });
  }
  
  /**
   * Inherit from `Base.prototype`.
   */
  inherits(Landing, Base);
  
  }).call(this,require('_process'))
  },{"../utils":38,"./base":17,"_process":67}],25:[function(require,module,exports){
  (function (process){
  'use strict';
  
  /**
   * Module dependencies.
   */
  
  var Base = require('./base');
  var inherits = require('../utils').inherits;
  var color = Base.color;
  var cursor = Base.cursor;
  
  /**
   * Expose `List`.
   */
  
  exports = module.exports = List;
  
  /**
   * Initialize a new `List` test reporter.
   *
   * @api public
   * @param {Runner} runner
   */
  function List (runner) {
    Base.call(this, runner);
  
    var self = this;
    var n = 0;
  
    runner.on('start', function () {
      console.log();
    });
  
    runner.on('test', function (test) {
      process.stdout.write(color('pass', '    ' + test.fullTitle() + ': '));
    });
  
    runner.on('pending', function (test) {
      var fmt = color('checkmark', '  -') +
        color('pending', ' %s');
      console.log(fmt, test.fullTitle());
    });
  
    runner.on('pass', function (test) {
      var fmt = color('checkmark', '  ' + Base.symbols.ok) +
        color('pass', ' %s: ') +
        color(test.speed, '%dms');
      cursor.CR();
      console.log(fmt, test.fullTitle(), test.duration);
    });
  
    runner.on('fail', function (test) {
      cursor.CR();
      console.log(color('fail', '  %d) %s'), ++n, test.fullTitle());
    });
  
    runner.on('end', self.epilogue.bind(self));
  }
  
  /**
   * Inherit from `Base.prototype`.
   */
  inherits(List, Base);
  
  }).call(this,require('_process'))
  },{"../utils":38,"./base":17,"_process":67}],26:[function(require,module,exports){
  (function (process){
  'use strict';
  
  /**
   * Module dependencies.
   */
  
  var Base = require('./base');
  var utils = require('../utils');
  
  /**
   * Constants
   */
  
  var SUITE_PREFIX = '$';
  
  /**
   * Expose `Markdown`.
   */
  
  exports = module.exports = Markdown;
  
  /**
   * Initialize a new `Markdown` reporter.
   *
   * @api public
   * @param {Runner} runner
   */
  function Markdown (runner) {
    Base.call(this, runner);
  
    var level = 0;
    var buf = '';
  
    function title (str) {
      return Array(level).join('#') + ' ' + str;
    }
  
    function mapTOC (suite, obj) {
      var ret = obj;
      var key = SUITE_PREFIX + suite.title;
  
      obj = obj[key] = obj[key] || { suite: suite };
      suite.suites.forEach(function (suite) {
        mapTOC(suite, obj);
      });
  
      return ret;
    }
  
    function stringifyTOC (obj, level) {
      ++level;
      var buf = '';
      var link;
      for (var key in obj) {
        if (key === 'suite') {
          continue;
        }
        if (key !== SUITE_PREFIX) {
          link = ' - [' + key.substring(1) + ']';
          link += '(#' + utils.slug(obj[key].suite.fullTitle()) + ')\n';
          buf += Array(level).join('  ') + link;
        }
        buf += stringifyTOC(obj[key], level);
      }
      return buf;
    }
  
    function generateTOC (suite) {
      var obj = mapTOC(suite, {});
      return stringifyTOC(obj, 0);
    }
  
    generateTOC(runner.suite);
  
    runner.on('suite', function (suite) {
      ++level;
      var slug = utils.slug(suite.fullTitle());
      buf += '<a name="' + slug + '"></a>' + '\n';
      buf += title(suite.title) + '\n';
    });
  
    runner.on('suite end', function () {
      --level;
    });
  
    runner.on('pass', function (test) {
      var code = utils.clean(test.body);
      buf += test.title + '.\n';
      buf += '\n```js\n';
      buf += code + '\n';
      buf += '```\n\n';
    });
  
    runner.on('end', function () {
      process.stdout.write('# TOC\n');
      process.stdout.write(generateTOC(runner.suite));
      process.stdout.write(buf);
    });
  }
  
  }).call(this,require('_process'))
  },{"../utils":38,"./base":17,"_process":67}],27:[function(require,module,exports){
  (function (process){
  'use strict';
  
  /**
   * Module dependencies.
   */
  
  var Base = require('./base');
  var inherits = require('../utils').inherits;
  
  /**
   * Expose `Min`.
   */
  
  exports = module.exports = Min;
  
  /**
   * Initialize a new `Min` minimal test reporter (best used with --watch).
   *
   * @api public
   * @param {Runner} runner
   */
  function Min (runner) {
    Base.call(this, runner);
  
    runner.on('start', function () {
      // clear screen
      process.stdout.write('\u001b[2J');
      // set cursor position
      process.stdout.write('\u001b[1;3H');
    });
  
    runner.on('end', this.epilogue.bind(this));
  }
  
  /**
   * Inherit from `Base.prototype`.
   */
  inherits(Min, Base);
  
  }).call(this,require('_process'))
  },{"../utils":38,"./base":17,"_process":67}],28:[function(require,module,exports){
  (function (process){
  'use strict';
  
  /**
   * Module dependencies.
   */
  
  var Base = require('./base');
  var inherits = require('../utils').inherits;
  
  /**
   * Expose `Dot`.
   */
  
  exports = module.exports = NyanCat;
  
  /**
   * Initialize a new `Dot` matrix test reporter.
   *
   * @param {Runner} runner
   * @api public
   */
  
  function NyanCat (runner) {
    Base.call(this, runner);
  
    var self = this;
    var width = Base.window.width * 0.75 | 0;
    var nyanCatWidth = this.nyanCatWidth = 11;
  
    this.colorIndex = 0;
    this.numberOfLines = 4;
    this.rainbowColors = self.generateColors();
    this.scoreboardWidth = 5;
    this.tick = 0;
    this.trajectories = [[], [], [], []];
    this.trajectoryWidthMax = (width - nyanCatWidth);
  
    runner.on('start', function () {
      Base.cursor.hide();
      self.draw();
    });
  
    runner.on('pending', function () {
      self.draw();
    });
  
    runner.on('pass', function () {
      self.draw();
    });
  
    runner.on('fail', function () {
      self.draw();
    });
  
    runner.on('end', function () {
      Base.cursor.show();
      for (var i = 0; i < self.numberOfLines; i++) {
        write('\n');
      }
      self.epilogue();
    });
  }
  
  /**
   * Inherit from `Base.prototype`.
   */
  inherits(NyanCat, Base);
  
  /**
   * Draw the nyan cat
   *
   * @api private
   */
  
  NyanCat.prototype.draw = function () {
    this.appendRainbow();
    this.drawScoreboard();
    this.drawRainbow();
    this.drawNyanCat();
    this.tick = !this.tick;
  };
  
  /**
   * Draw the "scoreboard" showing the number
   * of passes, failures and pending tests.
   *
   * @api private
   */
  
  NyanCat.prototype.drawScoreboard = function () {
    var stats = this.stats;
  
    function draw (type, n) {
      write(' ');
      write(Base.color(type, n));
      write('\n');
    }
  
    draw('green', stats.passes);
    draw('fail', stats.failures);
    draw('pending', stats.pending);
    write('\n');
  
    this.cursorUp(this.numberOfLines);
  };
  
  /**
   * Append the rainbow.
   *
   * @api private
   */
  
  NyanCat.prototype.appendRainbow = function () {
    var segment = this.tick ? '_' : '-';
    var rainbowified = this.rainbowify(segment);
  
    for (var index = 0; index < this.numberOfLines; index++) {
      var trajectory = this.trajectories[index];
      if (trajectory.length >= this.trajectoryWidthMax) {
        trajectory.shift();
      }
      trajectory.push(rainbowified);
    }
  };
  
  /**
   * Draw the rainbow.
   *
   * @api private
   */
  
  NyanCat.prototype.drawRainbow = function () {
    var self = this;
  
    this.trajectories.forEach(function (line) {
      write('\u001b[' + self.scoreboardWidth + 'C');
      write(line.join(''));
      write('\n');
    });
  
    this.cursorUp(this.numberOfLines);
  };
  
  /**
   * Draw the nyan cat
   *
   * @api private
   */
  NyanCat.prototype.drawNyanCat = function () {
    var self = this;
    var startWidth = this.scoreboardWidth + this.trajectories[0].length;
    var dist = '\u001b[' + startWidth + 'C';
    var padding = '';
  
    write(dist);
    write('_,------,');
    write('\n');
  
    write(dist);
    padding = self.tick ? '  ' : '   ';
    write('_|' + padding + '/\\_/\\ ');
    write('\n');
  
    write(dist);
    padding = self.tick ? '_' : '__';
    var tail = self.tick ? '~' : '^';
    write(tail + '|' + padding + this.face() + ' ');
    write('\n');
  
    write(dist);
    padding = self.tick ? ' ' : '  ';
    write(padding + '""  "" ');
    write('\n');
  
    this.cursorUp(this.numberOfLines);
  };
  
  /**
   * Draw nyan cat face.
   *
   * @api private
   * @return {string}
   */
  
  NyanCat.prototype.face = function () {
    var stats = this.stats;
    if (stats.failures) {
      return '( x .x)';
    } else if (stats.pending) {
      return '( o .o)';
    } else if (stats.passes) {
      return '( ^ .^)';
    }
    return '( - .-)';
  };
  
  /**
   * Move cursor up `n`.
   *
   * @api private
   * @param {number} n
   */
  
  NyanCat.prototype.cursorUp = function (n) {
    write('\u001b[' + n + 'A');
  };
  
  /**
   * Move cursor down `n`.
   *
   * @api private
   * @param {number} n
   */
  
  NyanCat.prototype.cursorDown = function (n) {
    write('\u001b[' + n + 'B');
  };
  
  /**
   * Generate rainbow colors.
   *
   * @api private
   * @return {Array}
   */
  NyanCat.prototype.generateColors = function () {
    var colors = [];
  
    for (var i = 0; i < (6 * 7); i++) {
      var pi3 = Math.floor(Math.PI / 3);
      var n = (i * (1.0 / 6));
      var r = Math.floor(3 * Math.sin(n) + 3);
      var g = Math.floor(3 * Math.sin(n + 2 * pi3) + 3);
      var b = Math.floor(3 * Math.sin(n + 4 * pi3) + 3);
      colors.push(36 * r + 6 * g + b + 16);
    }
  
    return colors;
  };
  
  /**
   * Apply rainbow to the given `str`.
   *
   * @api private
   * @param {string} str
   * @return {string}
   */
  NyanCat.prototype.rainbowify = function (str) {
    if (!Base.useColors) {
      return str;
    }
    var color = this.rainbowColors[this.colorIndex % this.rainbowColors.length];
    this.colorIndex += 1;
    return '\u001b[38;5;' + color + 'm' + str + '\u001b[0m';
  };
  
  /**
   * Stdout helper.
   *
   * @param {string} string A message to write to stdout.
   */
  function write (string) {
    process.stdout.write(string);
  }
  
  }).call(this,require('_process'))
  },{"../utils":38,"./base":17,"_process":67}],29:[function(require,module,exports){
  (function (process){
  'use strict';
  
  /**
   * Module dependencies.
   */
  
  var Base = require('./base');
  var inherits = require('../utils').inherits;
  var color = Base.color;
  var cursor = Base.cursor;
  
  /**
   * Expose `Progress`.
   */
  
  exports = module.exports = Progress;
  
  /**
   * General progress bar color.
   */
  
  Base.colors.progress = 90;
  
  /**
   * Initialize a new `Progress` bar test reporter.
   *
   * @api public
   * @param {Runner} runner
   * @param {Object} options
   */
  function Progress (runner, options) {
    Base.call(this, runner);
  
    var self = this;
    var width = Base.window.width * 0.50 | 0;
    var total = runner.total;
    var complete = 0;
    var lastN = -1;
  
    // default chars
    options = options || {};
    options.open = options.open || '[';
    options.complete = options.complete || '▬';
    options.incomplete = options.incomplete || Base.symbols.dot;
    options.close = options.close || ']';
    options.verbose = false;
  
    // tests started
    runner.on('start', function () {
      console.log();
      cursor.hide();
    });
  
    // tests complete
    runner.on('test end', function () {
      complete++;
  
      var percent = complete / total;
      var n = width * percent | 0;
      var i = width - n;
  
      if (n === lastN && !options.verbose) {
        // Don't re-render the line if it hasn't changed
        return;
      }
      lastN = n;
  
      cursor.CR();
      process.stdout.write('\u001b[J');
      process.stdout.write(color('progress', '  ' + options.open));
      process.stdout.write(Array(n).join(options.complete));
      process.stdout.write(Array(i).join(options.incomplete));
      process.stdout.write(color('progress', options.close));
      if (options.verbose) {
        process.stdout.write(color('progress', ' ' + complete + ' of ' + total));
      }
    });
  
    // tests are complete, output some stats
    // and the failures if any
    runner.on('end', function () {
      cursor.show();
      console.log();
      self.epilogue();
    });
  }
  
  /**
   * Inherit from `Base.prototype`.
   */
  inherits(Progress, Base);
  
  }).call(this,require('_process'))
  },{"../utils":38,"./base":17,"_process":67}],30:[function(require,module,exports){
  'use strict';
  
  /**
   * Module dependencies.
   */
  
  var Base = require('./base');
  var inherits = require('../utils').inherits;
  var color = Base.color;
  
  /**
   * Expose `Spec`.
   */
  
  exports = module.exports = Spec;
  
  /**
   * Initialize a new `Spec` test reporter.
   *
   * @api public
   * @param {Runner} runner
   */
  function Spec (runner) {
    Base.call(this, runner);
  
    var self = this;
    var indents = 0;
    var n = 0;
  
    function indent () {
      return Array(indents).join('  ');
    }
  
    runner.on('start', function () {
      console.log();
    });
  
    runner.on('suite', function (suite) {
      ++indents;
      console.log(color('suite', '%s%s'), indent(), suite.title);
    });
  
    runner.on('suite end', function () {
      --indents;
      if (indents === 1) {
        console.log();
      }
    });
  
    runner.on('pending', function (test) {
      var fmt = indent() + color('pending', '  - %s');
      console.log(fmt, test.title);
    });
  
    runner.on('pass', function (test) {
      var fmt;
      if (test.speed === 'fast') {
        fmt = indent() +
          color('checkmark', '  ' + Base.symbols.ok) +
          color('pass', ' %s');
        console.log(fmt, test.title);
      } else {
        fmt = indent() +
          color('checkmark', '  ' + Base.symbols.ok) +
          color('pass', ' %s') +
          color(test.speed, ' (%dms)');
        console.log(fmt, test.title, test.duration);
      }
    });
  
    runner.on('fail', function (test) {
      console.log(indent() + color('fail', '  %d) %s'), ++n, test.title);
    });
  
    runner.on('end', self.epilogue.bind(self));
  }
  
  /**
   * Inherit from `Base.prototype`.
   */
  inherits(Spec, Base);
  
  },{"../utils":38,"./base":17}],31:[function(require,module,exports){
  'use strict';
  
  /**
   * Module dependencies.
   */
  
  var Base = require('./base');
  
  /**
   * Expose `TAP`.
   */
  
  exports = module.exports = TAP;
  
  /**
   * Initialize a new `TAP` reporter.
   *
   * @api public
   * @param {Runner} runner
   */
  function TAP (runner) {
    Base.call(this, runner);
  
    var n = 1;
    var passes = 0;
    var failures = 0;
  
    runner.on('start', function () {
      var total = runner.grepTotal(runner.suite);
      console.log('%d..%d', 1, total);
    });
  
    runner.on('test end', function () {
      ++n;
    });
  
    runner.on('pending', function (test) {
      console.log('ok %d %s # SKIP -', n, title(test));
    });
  
    runner.on('pass', function (test) {
      passes++;
      console.log('ok %d %s', n, title(test));
    });
  
    runner.on('fail', function (test, err) {
      failures++;
      console.log('not ok %d %s', n, title(test));
      if (err.stack) {
        console.log(err.stack.replace(/^/gm, '  '));
      }
    });
  
    runner.on('end', function () {
      console.log('# tests ' + (passes + failures));
      console.log('# pass ' + passes);
      console.log('# fail ' + failures);
    });
  }
  
  /**
   * Return a TAP-safe title of `test`
   *
   * @api private
   * @param {Object} test
   * @return {String}
   */
  function title (test) {
    return test.fullTitle().replace(/#/g, '');
  }
  
  },{"./base":17}],32:[function(require,module,exports){
  (function (process,global){
  'use strict';
  
  /**
   * Module dependencies.
   */
  
  var Base = require('./base');
  var utils = require('../utils');
  var inherits = utils.inherits;
  var fs = require('fs');
  var escape = utils.escape;
  var mkdirp = require('mkdirp');
  var path = require('path');
  
  /**
   * Save timer references to avoid Sinon interfering (see GH-237).
   */
  
  /* eslint-disable no-unused-vars, no-native-reassign */
  var Date = global.Date;
  var setTimeout = global.setTimeout;
  var setInterval = global.setInterval;
  var clearTimeout = global.clearTimeout;
  var clearInterval = global.clearInterval;
  /* eslint-enable no-unused-vars, no-native-reassign */
  
  /**
   * Expose `XUnit`.
   */
  
  exports = module.exports = XUnit;
  
  /**
   * Initialize a new `XUnit` reporter.
   *
   * @api public
   * @param {Runner} runner
   */
  function XUnit (runner, options) {
    Base.call(this, runner);
  
    var stats = this.stats;
    var tests = [];
    var self = this;
  
    if (options && options.reporterOptions && options.reporterOptions.output) {
      if (!fs.createWriteStream) {
        throw new Error('file output not supported in browser');
      }
      mkdirp.sync(path.dirname(options.reporterOptions.output));
      self.fileStream = fs.createWriteStream(options.reporterOptions.output);
    }
  
    runner.on('pending', function (test) {
      tests.push(test);
    });
  
    runner.on('pass', function (test) {
      tests.push(test);
    });
  
    runner.on('fail', function (test) {
      tests.push(test);
    });
  
    runner.on('end', function () {
      self.write(tag('testsuite', {
        name: 'Mocha Tests',
        tests: stats.tests,
        failures: stats.failures,
        errors: stats.failures,
        skipped: stats.tests - stats.failures - stats.passes,
        timestamp: (new Date()).toUTCString(),
        time: (stats.duration / 1000) || 0
      }, false));
  
      tests.forEach(function (t) {
        self.test(t);
      });
  
      self.write('</testsuite>');
    });
  }
  
  /**
   * Inherit from `Base.prototype`.
   */
  inherits(XUnit, Base);
  
  /**
   * Override done to close the stream (if it's a file).
   *
   * @param failures
   * @param {Function} fn
   */
  XUnit.prototype.done = function (failures, fn) {
    if (this.fileStream) {
      this.fileStream.end(function () {
        fn(failures);
      });
    } else {
      fn(failures);
    }
  };
  
  /**
   * Write out the given line.
   *
   * @param {string} line
   */
  XUnit.prototype.write = function (line) {
    if (this.fileStream) {
      this.fileStream.write(line + '\n');
    } else if (typeof process === 'object' && process.stdout) {
      process.stdout.write(line + '\n');
    } else {
      console.log(line);
    }
  };
  
  /**
   * Output tag for the given `test.`
   *
   * @param {Test} test
   */
  XUnit.prototype.test = function (test) {
    var attrs = {
      classname: test.parent.fullTitle(),
      name: test.title,
      time: (test.duration / 1000) || 0
    };
  
    if (test.state === 'failed') {
      var err = test.err;
      this.write(tag('testcase', attrs, false, tag('failure', {}, false, escape(err.message) + '\n' + escape(err.stack))));
    } else if (test.isPending()) {
      this.write(tag('testcase', attrs, false, tag('skipped', {}, true)));
    } else {
      this.write(tag('testcase', attrs, true));
    }
  };
  
  /**
   * HTML tag helper.
   *
   * @param name
   * @param attrs
   * @param close
   * @param content
   * @return {string}
   */
  function tag (name, attrs, close, content) {
    var end = close ? '/>' : '>';
    var pairs = [];
    var tag;
  
    for (var key in attrs) {
      if (Object.prototype.hasOwnProperty.call(attrs, key)) {
        pairs.push(key + '="' + escape(attrs[key]) + '"');
      }
    }
  
    tag = '<' + name + (pairs.length ? ' ' + pairs.join(' ') : '') + end;
    if (content) {
      tag += content + '</' + name + end;
    }
    return tag;
  }
  
  }).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
  },{"../utils":38,"./base":17,"_process":67,"fs":42,"mkdirp":64,"path":42}],33:[function(require,module,exports){
  (function (global){
  'use strict';
  
  /**
   * Module dependencies.
   */
  
  var EventEmitter = require('events').EventEmitter;
  var JSON = require('json3');
  var Pending = require('./pending');
  var debug = require('debug')('mocha:runnable');
  var milliseconds = require('./ms');
  var utils = require('./utils');
  var create = require('lodash.create');
  
  /**
   * Save timer references to avoid Sinon interfering (see GH-237).
   */
  
  /* eslint-disable no-unused-vars, no-native-reassign */
  var Date = global.Date;
  var setTimeout = global.setTimeout;
  var setInterval = global.setInterval;
  var clearTimeout = global.clearTimeout;
  var clearInterval = global.clearInterval;
  /* eslint-enable no-unused-vars, no-native-reassign */
  
  /**
   * Object#toString().
   */
  
  var toString = Object.prototype.toString;
  
  /**
   * Expose `Runnable`.
   */
  
  module.exports = Runnable;
  
  /**
   * Initialize a new `Runnable` with the given `title` and callback `fn`.
   *
   * @param {String} title
   * @param {Function} fn
   * @api private
   * @param {string} title
   * @param {Function} fn
   */
  function Runnable (title, fn) {
    this.title = title;
    this.fn = fn;
    this.body = (fn || '').toString();
    this.async = fn && fn.length;
    this.sync = !this.async;
    this._timeout = 2000;
    this._slow = 75;
    this._enableTimeouts = true;
    this.timedOut = false;
    this._trace = new Error('done() called multiple times');
    this._retries = -1;
    this._currentRetry = 0;
    this.pending = false;
  }
  
  /**
   * Inherit from `EventEmitter.prototype`.
   */
  Runnable.prototype = create(EventEmitter.prototype, {
    constructor: Runnable
  });
  
  /**
   * Set & get timeout `ms`.
   *
   * @api private
   * @param {number|string} ms
   * @return {Runnable|number} ms or Runnable instance.
   */
  Runnable.prototype.timeout = function (ms) {
    if (!arguments.length) {
      return this._timeout;
    }
    // see #1652 for reasoning
    if (ms === 0 || ms > Math.pow(2, 31)) {
      this._enableTimeouts = false;
    }
    if (typeof ms === 'string') {
      ms = milliseconds(ms);
    }
    debug('timeout %d', ms);
    this._timeout = ms;
    if (this.timer) {
      this.resetTimeout();
    }
    return this;
  };
  
  /**
   * Set & get slow `ms`.
   *
   * @api private
   * @param {number|string} ms
   * @return {Runnable|number} ms or Runnable instance.
   */
  Runnable.prototype.slow = function (ms) {
    if (typeof ms === 'undefined') {
      return this._slow;
    }
    if (typeof ms === 'string') {
      ms = milliseconds(ms);
    }
    debug('timeout %d', ms);
    this._slow = ms;
    return this;
  };
  
  /**
   * Set and get whether timeout is `enabled`.
   *
   * @api private
   * @param {boolean} enabled
   * @return {Runnable|boolean} enabled or Runnable instance.
   */
  Runnable.prototype.enableTimeouts = function (enabled) {
    if (!arguments.length) {
      return this._enableTimeouts;
    }
    debug('enableTimeouts %s', enabled);
    this._enableTimeouts = enabled;
    return this;
  };
  
  /**
   * Halt and mark as pending.
   *
   * @api public
   */
  Runnable.prototype.skip = function () {
    throw new Pending('sync skip');
  };
  
  /**
   * Check if this runnable or its parent suite is marked as pending.
   *
   * @api private
   */
  Runnable.prototype.isPending = function () {
    return this.pending || (this.parent && this.parent.isPending());
  };
  
  /**
   * Set number of retries.
   *
   * @api private
   */
  Runnable.prototype.retries = function (n) {
    if (!arguments.length) {
      return this._retries;
    }
    this._retries = n;
  };
  
  /**
   * Get current retry
   *
   * @api private
   */
  Runnable.prototype.currentRetry = function (n) {
    if (!arguments.length) {
      return this._currentRetry;
    }
    this._currentRetry = n;
  };
  
  /**
   * Return the full title generated by recursively concatenating the parent's
   * full title.
   *
   * @api public
   * @return {string}
   */
  Runnable.prototype.fullTitle = function () {
    return this.parent.fullTitle() + ' ' + this.title;
  };
  
  /**
   * Clear the timeout.
   *
   * @api private
   */
  Runnable.prototype.clearTimeout = function () {
    clearTimeout(this.timer);
  };
  
  /**
   * Inspect the runnable void of private properties.
   *
   * @api private
   * @return {string}
   */
  Runnable.prototype.inspect = function () {
    return JSON.stringify(this, function (key, val) {
      if (key[0] === '_') {
        return;
      }
      if (key === 'parent') {
        return '#<Suite>';
      }
      if (key === 'ctx') {
        return '#<Context>';
      }
      return val;
    }, 2);
  };
  
  /**
   * Reset the timeout.
   *
   * @api private
   */
  Runnable.prototype.resetTimeout = function () {
    var self = this;
    var ms = this.timeout() || 1e9;
  
    if (!this._enableTimeouts) {
      return;
    }
    this.clearTimeout();
    this.timer = setTimeout(function () {
      if (!self._enableTimeouts) {
        return;
      }
      self.callback(new Error('Timeout of ' + ms +
        'ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves.'));
      self.timedOut = true;
    }, ms);
  };
  
  /**
   * Whitelist a list of globals for this test run.
   *
   * @api private
   * @param {string[]} globals
   */
  Runnable.prototype.globals = function (globals) {
    if (!arguments.length) {
      return this._allowedGlobals;
    }
    this._allowedGlobals = globals;
  };
  
  /**
   * Run the test and invoke `fn(err)`.
   *
   * @param {Function} fn
   * @api private
   */
  Runnable.prototype.run = function (fn) {
    var self = this;
    var start = new Date();
    var ctx = this.ctx;
    var finished;
    var emitted;
  
    // Sometimes the ctx exists, but it is not runnable
    if (ctx && ctx.runnable) {
      ctx.runnable(this);
    }
  
    // called multiple times
    function multiple (err) {
      if (emitted) {
        return;
      }
      emitted = true;
      self.emit('error', err || new Error('done() called multiple times; stacktrace may be inaccurate'));
    }
  
    // finished
    function done (err) {
      var ms = self.timeout();
      if (self.timedOut) {
        return;
      }
      if (finished) {
        return multiple(err || self._trace);
      }
  
      self.clearTimeout();
      self.duration = new Date() - start;
      finished = true;
      if (!err && self.duration > ms && self._enableTimeouts) {
        err = new Error('Timeout of ' + ms +
        'ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves.');
      }
      fn(err);
    }
  
    // for .resetTimeout()
    this.callback = done;
  
    // explicit async with `done` argument
    if (this.async) {
      this.resetTimeout();
  
      // allows skip() to be used in an explicit async context
      this.skip = function asyncSkip () {
        done(new Pending('async skip call'));
        // halt execution.  the Runnable will be marked pending
        // by the previous call, and the uncaught handler will ignore
        // the failure.
        throw new Pending('async skip; aborting execution');
      };
  
      if (this.allowUncaught) {
        return callFnAsync(this.fn);
      }
      try {
        callFnAsync(this.fn);
      } catch (err) {
        emitted = true;
        done(utils.getError(err));
      }
      return;
    }
  
    if (this.allowUncaught) {
      callFn(this.fn);
      done();
      return;
    }
  
    // sync or promise-returning
    try {
      if (this.isPending()) {
        done();
      } else {
        callFn(this.fn);
      }
    } catch (err) {
      emitted = true;
      done(utils.getError(err));
    }
  
    function callFn (fn) {
      var result = fn.call(ctx);
      if (result && typeof result.then === 'function') {
        self.resetTimeout();
        result
          .then(function () {
            done();
            // Return null so libraries like bluebird do not warn about
            // subsequently constructed Promises.
            return null;
          },
          function (reason) {
            done(reason || new Error('Promise rejected with no or falsy reason'));
          });
      } else {
        if (self.asyncOnly) {
          return done(new Error('--async-only option in use without declaring `done()` or returning a promise'));
        }
  
        done();
      }
    }
  
    function callFnAsync (fn) {
      var result = fn.call(ctx, function (err) {
        if (err instanceof Error || toString.call(err) === '[object Error]') {
          return done(err);
        }
        if (err) {
          if (Object.prototype.toString.call(err) === '[object Object]') {
            return done(new Error('done() invoked with non-Error: ' +
              JSON.stringify(err)));
          }
          return done(new Error('done() invoked with non-Error: ' + err));
        }
        if (result && utils.isPromise(result)) {
          return done(new Error('Resolution method is overspecified. Specify a callback *or* return a Promise; not both.'));
        }
  
        done();
      });
    }
  };
  
  }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
  },{"./ms":15,"./pending":16,"./utils":38,"debug":2,"events":3,"json3":54,"lodash.create":60}],34:[function(require,module,exports){
  (function (process,global){
  'use strict';
  
  /**
   * Module dependencies.
   */
  
  var EventEmitter = require('events').EventEmitter;
  var Pending = require('./pending');
  var utils = require('./utils');
  var inherits = utils.inherits;
  var debug = require('debug')('mocha:runner');
  var Runnable = require('./runnable');
  var filter = utils.filter;
  var indexOf = utils.indexOf;
  var some = utils.some;
  var keys = utils.keys;
  var stackFilter = utils.stackTraceFilter();
  var stringify = utils.stringify;
  var type = utils.type;
  var undefinedError = utils.undefinedError;
  var isArray = utils.isArray;
  
  /**
   * Non-enumerable globals.
   */
  
  var globals = [
    'setTimeout',
    'clearTimeout',
    'setInterval',
    'clearInterval',
    'XMLHttpRequest',
    'Date',
    'setImmediate',
    'clearImmediate'
  ];
  
  /**
   * Expose `Runner`.
   */
  
  module.exports = Runner;
  
  /**
   * Initialize a `Runner` for the given `suite`.
   *
   * Events:
   *
   *   - `start`  execution started
   *   - `end`  execution complete
   *   - `suite`  (suite) test suite execution started
   *   - `suite end`  (suite) all tests (and sub-suites) have finished
   *   - `test`  (test) test execution started
   *   - `test end`  (test) test completed
   *   - `hook`  (hook) hook execution started
   *   - `hook end`  (hook) hook complete
   *   - `pass`  (test) test passed
   *   - `fail`  (test, err) test failed
   *   - `pending`  (test) test pending
   *
   * @api public
   * @param {Suite} suite Root suite
   * @param {boolean} [delay] Whether or not to delay execution of root suite
   * until ready.
   */
  function Runner (suite, delay) {
    var self = this;
    this._globals = [];
    this._abort = false;
    this._delay = delay;
    this.suite = suite;
    this.started = false;
    this.total = suite.total();
    this.failures = 0;
    this.on('test end', function (test) {
      self.checkGlobals(test);
    });
    this.on('hook end', function (hook) {
      self.checkGlobals(hook);
    });
    this._defaultGrep = /.*/;
    this.grep(this._defaultGrep);
    this.globals(this.globalProps().concat(extraGlobals()));
  }
  
  /**
   * Wrapper for setImmediate, process.nextTick, or browser polyfill.
   *
   * @param {Function} fn
   * @api private
   */
  Runner.immediately = global.setImmediate || process.nextTick;
  
  /**
   * Inherit from `EventEmitter.prototype`.
   */
  inherits(Runner, EventEmitter);
  
  /**
   * Run tests with full titles matching `re`. Updates runner.total
   * with number of tests matched.
   *
   * @param {RegExp} re
   * @param {Boolean} invert
   * @return {Runner} for chaining
   * @api public
   * @param {RegExp} re
   * @param {boolean} invert
   * @return {Runner} Runner instance.
   */
  Runner.prototype.grep = function (re, invert) {
    debug('grep %s', re);
    this._grep = re;
    this._invert = invert;
    this.total = this.grepTotal(this.suite);
    return this;
  };
  
  /**
   * Returns the number of tests matching the grep search for the
   * given suite.
   *
   * @param {Suite} suite
   * @return {Number}
   * @api public
   * @param {Suite} suite
   * @return {number}
   */
  Runner.prototype.grepTotal = function (suite) {
    var self = this;
    var total = 0;
  
    suite.eachTest(function (test) {
      var match = self._grep.test(test.fullTitle());
      if (self._invert) {
        match = !match;
      }
      if (match) {
        total++;
      }
    });
  
    return total;
  };
  
  /**
   * Return a list of global properties.
   *
   * @return {Array}
   * @api private
   */
  Runner.prototype.globalProps = function () {
    var props = keys(global);
  
    // non-enumerables
    for (var i = 0; i < globals.length; ++i) {
      if (~indexOf(props, globals[i])) {
        continue;
      }
      props.push(globals[i]);
    }
  
    return props;
  };
  
  /**
   * Allow the given `arr` of globals.
   *
   * @param {Array} arr
   * @return {Runner} for chaining
   * @api public
   * @param {Array} arr
   * @return {Runner} Runner instance.
   */
  Runner.prototype.globals = function (arr) {
    if (!arguments.length) {
      return this._globals;
    }
    debug('globals %j', arr);
    this._globals = this._globals.concat(arr);
    return this;
  };
  
  /**
   * Check for global variable leaks.
   *
   * @api private
   */
  Runner.prototype.checkGlobals = function (test) {
    if (this.ignoreLeaks) {
      return;
    }
    var ok = this._globals;
  
    var globals = this.globalProps();
    var leaks;
  
    if (test) {
      ok = ok.concat(test._allowedGlobals || []);
    }
  
    if (this.prevGlobalsLength === globals.length) {
      return;
    }
    this.prevGlobalsLength = globals.length;
  
    leaks = filterLeaks(ok, globals);
    this._globals = this._globals.concat(leaks);
  
    if (leaks.length > 1) {
      this.fail(test, new Error('global leaks detected: ' + leaks.join(', ') + ''));
    } else if (leaks.length) {
      this.fail(test, new Error('global leak detected: ' + leaks[0]));
    }
  };
  
  /**
   * Fail the given `test`.
   *
   * @api private
   * @param {Test} test
   * @param {Error} err
   */
  Runner.prototype.fail = function (test, err) {
    if (test.isPending()) {
      return;
    }
  
    ++this.failures;
    test.state = 'failed';
  
    if (!(err instanceof Error || err && typeof err.message === 'string')) {
      err = new Error('the ' + type(err) + ' ' + stringify(err) + ' was thrown, throw an Error :)');
    }
  
    try {
      err.stack = (this.fullStackTrace || !err.stack)
        ? err.stack
        : stackFilter(err.stack);
    } catch (ignored) {
      // some environments do not take kindly to monkeying with the stack
    }
  
    this.emit('fail', test, err);
  };
  
  /**
   * Fail the given `hook` with `err`.
   *
   * Hook failures work in the following pattern:
   * - If bail, then exit
   * - Failed `before` hook skips all tests in a suite and subsuites,
   *   but jumps to corresponding `after` hook
   * - Failed `before each` hook skips remaining tests in a
   *   suite and jumps to corresponding `after each` hook,
   *   which is run only once
   * - Failed `after` hook does not alter
   *   execution order
   * - Failed `after each` hook skips remaining tests in a
   *   suite and subsuites, but executes other `after each`
   *   hooks
   *
   * @api private
   * @param {Hook} hook
   * @param {Error} err
   */
  Runner.prototype.failHook = function (hook, err) {
    if (hook.ctx && hook.ctx.currentTest) {
      hook.originalTitle = hook.originalTitle || hook.title;
      hook.title = hook.originalTitle + ' for "' + hook.ctx.currentTest.title + '"';
    }
  
    this.fail(hook, err);
    if (this.suite.bail()) {
      this.emit('end');
    }
  };
  
  /**
   * Run hook `name` callbacks and then invoke `fn()`.
   *
   * @api private
   * @param {string} name
   * @param {Function} fn
   */
  
  Runner.prototype.hook = function (name, fn) {
    var suite = this.suite;
    var hooks = suite['_' + name];
    var self = this;
  
    function next (i) {
      var hook = hooks[i];
      if (!hook) {
        return fn();
      }
      self.currentRunnable = hook;
  
      hook.ctx.currentTest = self.test;
  
      self.emit('hook', hook);
  
      if (!hook.listeners('error').length) {
        hook.on('error', function (err) {
          self.failHook(hook, err);
        });
      }
  
      hook.run(function (err) {
        var testError = hook.error();
        if (testError) {
          self.fail(self.test, testError);
        }
        if (err) {
          if (err instanceof Pending) {
            if (name === 'beforeEach' || name === 'afterEach') {
              self.test.pending = true;
            } else {
              utils.forEach(suite.tests, function (test) {
                test.pending = true;
              });
              // a pending hook won't be executed twice.
              hook.pending = true;
            }
          } else {
            self.failHook(hook, err);
  
            // stop executing hooks, notify callee of hook err
            return fn(err);
          }
        }
        self.emit('hook end', hook);
        delete hook.ctx.currentTest;
        next(++i);
      });
    }
  
    Runner.immediately(function () {
      next(0);
    });
  };
  
  /**
   * Run hook `name` for the given array of `suites`
   * in order, and callback `fn(err, errSuite)`.
   *
   * @api private
   * @param {string} name
   * @param {Array} suites
   * @param {Function} fn
   */
  Runner.prototype.hooks = function (name, suites, fn) {
    var self = this;
    var orig = this.suite;
  
    function next (suite) {
      self.suite = suite;
  
      if (!suite) {
        self.suite = orig;
        return fn();
      }
  
      self.hook(name, function (err) {
        if (err) {
          var errSuite = self.suite;
          self.suite = orig;
          return fn(err, errSuite);
        }
  
        next(suites.pop());
      });
    }
  
    next(suites.pop());
  };
  
  /**
   * Run hooks from the top level down.
   *
   * @param {String} name
   * @param {Function} fn
   * @api private
   */
  Runner.prototype.hookUp = function (name, fn) {
    var suites = [this.suite].concat(this.parents()).reverse();
    this.hooks(name, suites, fn);
  };
  
  /**
   * Run hooks from the bottom up.
   *
   * @param {String} name
   * @param {Function} fn
   * @api private
   */
  Runner.prototype.hookDown = function (name, fn) {
    var suites = [this.suite].concat(this.parents());
    this.hooks(name, suites, fn);
  };
  
  /**
   * Return an array of parent Suites from
   * closest to furthest.
   *
   * @return {Array}
   * @api private
   */
  Runner.prototype.parents = function () {
    var suite = this.suite;
    var suites = [];
    while (suite.parent) {
      suite = suite.parent;
      suites.push(suite);
    }
    return suites;
  };
  
  /**
   * Run the current test and callback `fn(err)`.
   *
   * @param {Function} fn
   * @api private
   */
  Runner.prototype.runTest = function (fn) {
    var self = this;
    var test = this.test;
  
    if (!test) {
      return;
    }
    if (this.asyncOnly) {
      test.asyncOnly = true;
    }
  
    if (this.allowUncaught) {
      test.allowUncaught = true;
      return test.run(fn);
    }
    try {
      test.on('error', function (err) {
        self.fail(test, err);
      });
      test.run(fn);
    } catch (err) {
      fn(err);
    }
  };
  
  /**
   * Run tests in the given `suite` and invoke the callback `fn()` when complete.
   *
   * @api private
   * @param {Suite} suite
   * @param {Function} fn
   */
  Runner.prototype.runTests = function (suite, fn) {
    var self = this;
    var tests = suite.tests.slice();
    var test;
  
    function hookErr (_, errSuite, after) {
      // before/after Each hook for errSuite failed:
      var orig = self.suite;
  
      // for failed 'after each' hook start from errSuite parent,
      // otherwise start from errSuite itself
      self.suite = after ? errSuite.parent : errSuite;
  
      if (self.suite) {
        // call hookUp afterEach
        self.hookUp('afterEach', function (err2, errSuite2) {
          self.suite = orig;
          // some hooks may fail even now
          if (err2) {
            return hookErr(err2, errSuite2, true);
          }
          // report error suite
          fn(errSuite);
        });
      } else {
        // there is no need calling other 'after each' hooks
        self.suite = orig;
        fn(errSuite);
      }
    }
  
    function next (err, errSuite) {
      // if we bail after first err
      if (self.failures && suite._bail) {
        return fn();
      }
  
      if (self._abort) {
        return fn();
      }
  
      if (err) {
        return hookErr(err, errSuite, true);
      }
  
      // next test
      test = tests.shift();
  
      // all done
      if (!test) {
        return fn();
      }
  
      // grep
      var match = self._grep.test(test.fullTitle());
      if (self._invert) {
        match = !match;
      }
      if (!match) {
        // Run immediately only if we have defined a grep. When we
        // define a grep — It can cause maximum callstack error if
        // the grep is doing a large recursive loop by neglecting
        // all tests. The run immediately function also comes with
        // a performance cost. So we don't want to run immediately
        // if we run the whole test suite, because running the whole
        // test suite don't do any immediate recursive loops. Thus,
        // allowing a JS runtime to breathe.
        if (self._grep !== self._defaultGrep) {
          Runner.immediately(next);
        } else {
          next();
        }
        return;
      }
  
      if (test.isPending()) {
        self.emit('pending', test);
        self.emit('test end', test);
        return next();
      }
  
      // execute test and hook(s)
      self.emit('test', self.test = test);
      self.hookDown('beforeEach', function (err, errSuite) {
        if (test.isPending()) {
          self.emit('pending', test);
          self.emit('test end', test);
          return next();
        }
        if (err) {
          return hookErr(err, errSuite, false);
        }
        self.currentRunnable = self.test;
        self.runTest(function (err) {
          test = self.test;
          if (err) {
            var retry = test.currentRetry();
            if (err instanceof Pending) {
              test.pending = true;
              self.emit('pending', test);
            } else if (retry < test.retries()) {
              var clonedTest = test.clone();
              clonedTest.currentRetry(retry + 1);
              tests.unshift(clonedTest);
  
              // Early return + hook trigger so that it doesn't
              // increment the count wrong
              return self.hookUp('afterEach', next);
            } else {
              self.fail(test, err);
            }
            self.emit('test end', test);
  
            if (err instanceof Pending) {
              return next();
            }
  
            return self.hookUp('afterEach', next);
          }
  
          test.state = 'passed';
          self.emit('pass', test);
          self.emit('test end', test);
          self.hookUp('afterEach', next);
        });
      });
    }
  
    this.next = next;
    this.hookErr = hookErr;
    next();
  };
  
  /**
   * Run the given `suite` and invoke the callback `fn()` when complete.
   *
   * @api private
   * @param {Suite} suite
   * @param {Function} fn
   */
  Runner.prototype.runSuite = function (suite, fn) {
    var i = 0;
    var self = this;
    var total = this.grepTotal(suite);
    var afterAllHookCalled = false;
  
    debug('run suite %s', suite.fullTitle());
  
    if (!total || (self.failures && suite._bail)) {
      return fn();
    }
  
    this.emit('suite', this.suite = suite);
  
    function next (errSuite) {
      if (errSuite) {
        // current suite failed on a hook from errSuite
        if (errSuite === suite) {
          // if errSuite is current suite
          // continue to the next sibling suite
          return done();
        }
        // errSuite is among the parents of current suite
        // stop execution of errSuite and all sub-suites
        return done(errSuite);
      }
  
      if (self._abort) {
        return done();
      }
  
      var curr = suite.suites[i++];
      if (!curr) {
        return done();
      }
  
      // Avoid grep neglecting large number of tests causing a
      // huge recursive loop and thus a maximum call stack error.
      // See comment in `this.runTests()` for more information.
      if (self._grep !== self._defaultGrep) {
        Runner.immediately(function () {
          self.runSuite(curr, next);
        });
      } else {
        self.runSuite(curr, next);
      }
    }
  
    function done (errSuite) {
      self.suite = suite;
      self.nextSuite = next;
  
      if (afterAllHookCalled) {
        fn(errSuite);
      } else {
        // mark that the afterAll block has been called once
        // and so can be skipped if there is an error in it.
        afterAllHookCalled = true;
  
        // remove reference to test
        delete self.test;
  
        self.hook('afterAll', function () {
          self.emit('suite end', suite);
          fn(errSuite);
        });
      }
    }
  
    this.nextSuite = next;
  
    this.hook('beforeAll', function (err) {
      if (err) {
        return done();
      }
      self.runTests(suite, next);
    });
  };
  
  /**
   * Handle uncaught exceptions.
   *
   * @param {Error} err
   * @api private
   */
  Runner.prototype.uncaught = function (err) {
    if (err) {
      debug('uncaught exception %s', err !== function () {
        return this;
      }.call(err) ? err : (err.message || err));
    } else {
      debug('uncaught undefined exception');
      err = undefinedError();
    }
    err.uncaught = true;
  
    var runnable = this.currentRunnable;
  
    if (!runnable) {
      runnable = new Runnable('Uncaught error outside test suite');
      runnable.parent = this.suite;
  
      if (this.started) {
        this.fail(runnable, err);
      } else {
        // Can't recover from this failure
        this.emit('start');
        this.fail(runnable, err);
        this.emit('end');
      }
  
      return;
    }
  
    runnable.clearTimeout();
  
    // Ignore errors if complete or pending
    if (runnable.state || runnable.isPending()) {
      return;
    }
    this.fail(runnable, err);
  
    // recover from test
    if (runnable.type === 'test') {
      this.emit('test end', runnable);
      this.hookUp('afterEach', this.next);
      return;
    }
  
   // recover from hooks
    if (runnable.type === 'hook') {
      var errSuite = this.suite;
      // if hook failure is in afterEach block
      if (runnable.fullTitle().indexOf('after each') > -1) {
        return this.hookErr(err, errSuite, true);
      }
      // if hook failure is in beforeEach block
      if (runnable.fullTitle().indexOf('before each') > -1) {
        return this.hookErr(err, errSuite, false);
      }
      // if hook failure is in after or before blocks
      return this.nextSuite(errSuite);
    }
  
    // bail
    this.emit('end');
  };
  
  /**
   * Cleans up the references to all the deferred functions
   * (before/after/beforeEach/afterEach) and tests of a Suite.
   * These must be deleted otherwise a memory leak can happen,
   * as those functions may reference variables from closures,
   * thus those variables can never be garbage collected as long
   * as the deferred functions exist.
   *
   * @param {Suite} suite
   */
  function cleanSuiteReferences (suite) {
    function cleanArrReferences (arr) {
      for (var i = 0; i < arr.length; i++) {
        delete arr[i].fn;
      }
    }
  
    if (isArray(suite._beforeAll)) {
      cleanArrReferences(suite._beforeAll);
    }
  
    if (isArray(suite._beforeEach)) {
      cleanArrReferences(suite._beforeEach);
    }
  
    if (isArray(suite._afterAll)) {
      cleanArrReferences(suite._afterAll);
    }
  
    if (isArray(suite._afterEach)) {
      cleanArrReferences(suite._afterEach);
    }
  
    for (var i = 0; i < suite.tests.length; i++) {
      delete suite.tests[i].fn;
    }
  }
  
  /**
   * Run the root suite and invoke `fn(failures)`
   * on completion.
   *
   * @param {Function} fn
   * @return {Runner} for chaining
   * @api public
   * @param {Function} fn
   * @return {Runner} Runner instance.
   */
  Runner.prototype.run = function (fn) {
    var self = this;
    var rootSuite = this.suite;
  
    // If there is an `only` filter
    if (this.hasOnly) {
      filterOnly(rootSuite);
    }
  
    fn = fn || function () {};
  
    function uncaught (err) {
      self.uncaught(err);
    }
  
    function start () {
      self.started = true;
      self.emit('start');
      self.runSuite(rootSuite, function () {
        debug('finished running');
        self.emit('end');
      });
    }
  
    debug('start');
  
    // references cleanup to avoid memory leaks
    this.on('suite end', cleanSuiteReferences);
  
    // callback
    this.on('end', function () {
      debug('end');
      process.removeListener('uncaughtException', uncaught);
      fn(self.failures);
    });
  
    // uncaught exception
    process.on('uncaughtException', uncaught);
  
    if (this._delay) {
      // for reporters, I guess.
      // might be nice to debounce some dots while we wait.
      this.emit('waiting', rootSuite);
      rootSuite.once('run', start);
    } else {
      start();
    }
  
    return this;
  };
  
  /**
   * Cleanly abort execution.
   *
   * @api public
   * @return {Runner} Runner instance.
   */
  Runner.prototype.abort = function () {
    debug('aborting');
    this._abort = true;
  
    return this;
  };
  
  /**
   * Filter suites based on `isOnly` logic.
   *
   * @param {Array} suite
   * @returns {Boolean}
   * @api private
   */
  function filterOnly (suite) {
    if (suite._onlyTests.length) {
      // If the suite contains `only` tests, run those and ignore any nested suites.
      suite.tests = suite._onlyTests;
      suite.suites = [];
    } else {
      // Otherwise, do not run any of the tests in this suite.
      suite.tests = [];
      utils.forEach(suite._onlySuites, function (onlySuite) {
        // If there are other `only` tests/suites nested in the current `only` suite, then filter that `only` suite.
        // Otherwise, all of the tests on this `only` suite should be run, so don't filter it.
        if (hasOnly(onlySuite)) {
          filterOnly(onlySuite);
        }
      });
      // Run the `only` suites, as well as any other suites that have `only` tests/suites as descendants.
      suite.suites = filter(suite.suites, function (childSuite) {
        return indexOf(suite._onlySuites, childSuite) !== -1 || filterOnly(childSuite);
      });
    }
    // Keep the suite only if there is something to run
    return suite.tests.length || suite.suites.length;
  }
  
  /**
   * Determines whether a suite has an `only` test or suite as a descendant.
   *
   * @param {Array} suite
   * @returns {Boolean}
   * @api private
   */
  function hasOnly (suite) {
    return suite._onlyTests.length || suite._onlySuites.length || some(suite.suites, hasOnly);
  }
  
  /**
   * Filter leaks with the given globals flagged as `ok`.
   *
   * @api private
   * @param {Array} ok
   * @param {Array} globals
   * @return {Array}
   */
  function filterLeaks (ok, globals) {
    return filter(globals, function (key) {
      // Firefox and Chrome exposes iframes as index inside the window object
      if (/^\d+/.test(key)) {
        return false;
      }
  
      // in firefox
      // if runner runs in an iframe, this iframe's window.getInterface method
      // not init at first it is assigned in some seconds
      if (global.navigator && (/^getInterface/).test(key)) {
        return false;
      }
  
      // an iframe could be approached by window[iframeIndex]
      // in ie6,7,8 and opera, iframeIndex is enumerable, this could cause leak
      if (global.navigator && (/^\d+/).test(key)) {
        return false;
      }
  
      // Opera and IE expose global variables for HTML element IDs (issue #243)
      if (/^mocha-/.test(key)) {
        return false;
      }
  
      var matched = filter(ok, function (ok) {
        if (~ok.indexOf('*')) {
          return key.indexOf(ok.split('*')[0]) === 0;
        }
        return key === ok;
      });
      return !matched.length && (!global.navigator || key !== 'onerror');
    });
  }
  
  /**
   * Array of globals dependent on the environment.
   *
   * @return {Array}
   * @api private
   */
  function extraGlobals () {
    if (typeof process === 'object' && typeof process.version === 'string') {
      var parts = process.version.split('.');
      var nodeVersion = utils.reduce(parts, function (a, v) {
        return a << 8 | v;
      });
  
      // 'errno' was renamed to process._errno in v0.9.11.
  
      if (nodeVersion < 0x00090B) {
        return ['errno'];
      }
    }
  
    return [];
  }
  
  }).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
  },{"./pending":16,"./runnable":33,"./utils":38,"_process":67,"debug":2,"events":3}],35:[function(require,module,exports){
  'use strict';
  
  /**
   * Module dependencies.
   */
  
  var EventEmitter = require('events').EventEmitter;
  var Hook = require('./hook');
  var utils = require('./utils');
  var inherits = utils.inherits;
  var debug = require('debug')('mocha:suite');
  var milliseconds = require('./ms');
  
  /**
   * Expose `Suite`.
   */
  
  exports = module.exports = Suite;
  
  /**
   * Create a new `Suite` with the given `title` and parent `Suite`. When a suite
   * with the same title is already present, that suite is returned to provide
   * nicer reporter and more flexible meta-testing.
   *
   * @api public
   * @param {Suite} parent
   * @param {string} title
   * @return {Suite}
   */
  exports.create = function (parent, title) {
    var suite = new Suite(title, parent.ctx);
    suite.parent = parent;
    title = suite.fullTitle();
    parent.addSuite(suite);
    return suite;
  };
  
  /**
   * Initialize a new `Suite` with the given `title` and `ctx`.
   *
   * @api private
   * @param {string} title
   * @param {Context} parentContext
   */
  function Suite (title, parentContext) {
    if (!utils.isString(title)) {
      throw new Error('Suite `title` should be a "string" but "' + typeof title + '" was given instead.');
    }
    this.title = title;
    function Context () {}
    Context.prototype = parentContext;
    this.ctx = new Context();
    this.suites = [];
    this.tests = [];
    this.pending = false;
    this._beforeEach = [];
    this._beforeAll = [];
    this._afterEach = [];
    this._afterAll = [];
    this.root = !title;
    this._timeout = 2000;
    this._enableTimeouts = true;
    this._slow = 75;
    this._bail = false;
    this._retries = -1;
    this._onlyTests = [];
    this._onlySuites = [];
    this.delayed = false;
  }
  
  /**
   * Inherit from `EventEmitter.prototype`.
   */
  inherits(Suite, EventEmitter);
  
  /**
   * Return a clone of this `Suite`.
   *
   * @api private
   * @return {Suite}
   */
  Suite.prototype.clone = function () {
    var suite = new Suite(this.title);
    debug('clone');
    suite.ctx = this.ctx;
    suite.timeout(this.timeout());
    suite.retries(this.retries());
    suite.enableTimeouts(this.enableTimeouts());
    suite.slow(this.slow());
    suite.bail(this.bail());
    return suite;
  };
  
  /**
   * Set timeout `ms` or short-hand such as "2s".
   *
   * @api private
   * @param {number|string} ms
   * @return {Suite|number} for chaining
   */
  Suite.prototype.timeout = function (ms) {
    if (!arguments.length) {
      return this._timeout;
    }
    if (ms.toString() === '0') {
      this._enableTimeouts = false;
    }
    if (typeof ms === 'string') {
      ms = milliseconds(ms);
    }
    debug('timeout %d', ms);
    this._timeout = parseInt(ms, 10);
    return this;
  };
  
  /**
   * Set number of times to retry a failed test.
   *
   * @api private
   * @param {number|string} n
   * @return {Suite|number} for chaining
   */
  Suite.prototype.retries = function (n) {
    if (!arguments.length) {
      return this._retries;
    }
    debug('retries %d', n);
    this._retries = parseInt(n, 10) || 0;
    return this;
  };
  
  /**
    * Set timeout to `enabled`.
    *
    * @api private
    * @param {boolean} enabled
    * @return {Suite|boolean} self or enabled
    */
  Suite.prototype.enableTimeouts = function (enabled) {
    if (!arguments.length) {
      return this._enableTimeouts;
    }
    debug('enableTimeouts %s', enabled);
    this._enableTimeouts = enabled;
    return this;
  };
  
  /**
   * Set slow `ms` or short-hand such as "2s".
   *
   * @api private
   * @param {number|string} ms
   * @return {Suite|number} for chaining
   */
  Suite.prototype.slow = function (ms) {
    if (!arguments.length) {
      return this._slow;
    }
    if (typeof ms === 'string') {
      ms = milliseconds(ms);
    }
    debug('slow %d', ms);
    this._slow = ms;
    return this;
  };
  
  /**
   * Sets whether to bail after first error.
   *
   * @api private
   * @param {boolean} bail
   * @return {Suite|number} for chaining
   */
  Suite.prototype.bail = function (bail) {
    if (!arguments.length) {
      return this._bail;
    }
    debug('bail %s', bail);
    this._bail = bail;
    return this;
  };
  
  /**
   * Check if this suite or its parent suite is marked as pending.
   *
   * @api private
   */
  Suite.prototype.isPending = function () {
    return this.pending || (this.parent && this.parent.isPending());
  };
  
  /**
   * Run `fn(test[, done])` before running tests.
   *
   * @api private
   * @param {string} title
   * @param {Function} fn
   * @return {Suite} for chaining
   */
  Suite.prototype.beforeAll = function (title, fn) {
    if (this.isPending()) {
      return this;
    }
    if (typeof title === 'function') {
      fn = title;
      title = fn.name;
    }
    title = '"before all" hook' + (title ? ': ' + title : '');
  
    var hook = new Hook(title, fn);
    hook.parent = this;
    hook.timeout(this.timeout());
    hook.retries(this.retries());
    hook.enableTimeouts(this.enableTimeouts());
    hook.slow(this.slow());
    hook.ctx = this.ctx;
    this._beforeAll.push(hook);
    this.emit('beforeAll', hook);
    return this;
  };
  
  /**
   * Run `fn(test[, done])` after running tests.
   *
   * @api private
   * @param {string} title
   * @param {Function} fn
   * @return {Suite} for chaining
   */
  Suite.prototype.afterAll = function (title, fn) {
    if (this.isPending()) {
      return this;
    }
    if (typeof title === 'function') {
      fn = title;
      title = fn.name;
    }
    title = '"after all" hook' + (title ? ': ' + title : '');
  
    var hook = new Hook(title, fn);
    hook.parent = this;
    hook.timeout(this.timeout());
    hook.retries(this.retries());
    hook.enableTimeouts(this.enableTimeouts());
    hook.slow(this.slow());
    hook.ctx = this.ctx;
    this._afterAll.push(hook);
    this.emit('afterAll', hook);
    return this;
  };
  
  /**
   * Run `fn(test[, done])` before each test case.
   *
   * @api private
   * @param {string} title
   * @param {Function} fn
   * @return {Suite} for chaining
   */
  Suite.prototype.beforeEach = function (title, fn) {
    if (this.isPending()) {
      return this;
    }
    if (typeof title === 'function') {
      fn = title;
      title = fn.name;
    }
    title = '"before each" hook' + (title ? ': ' + title : '');
  
    var hook = new Hook(title, fn);
    hook.parent = this;
    hook.timeout(this.timeout());
    hook.retries(this.retries());
    hook.enableTimeouts(this.enableTimeouts());
    hook.slow(this.slow());
    hook.ctx = this.ctx;
    this._beforeEach.push(hook);
    this.emit('beforeEach', hook);
    return this;
  };
  
  /**
   * Run `fn(test[, done])` after each test case.
   *
   * @api private
   * @param {string} title
   * @param {Function} fn
   * @return {Suite} for chaining
   */
  Suite.prototype.afterEach = function (title, fn) {
    if (this.isPending()) {
      return this;
    }
    if (typeof title === 'function') {
      fn = title;
      title = fn.name;
    }
    title = '"after each" hook' + (title ? ': ' + title : '');
  
    var hook = new Hook(title, fn);
    hook.parent = this;
    hook.timeout(this.timeout());
    hook.retries(this.retries());
    hook.enableTimeouts(this.enableTimeouts());
    hook.slow(this.slow());
    hook.ctx = this.ctx;
    this._afterEach.push(hook);
    this.emit('afterEach', hook);
    return this;
  };
  
  /**
   * Add a test `suite`.
   *
   * @api private
   * @param {Suite} suite
   * @return {Suite} for chaining
   */
  Suite.prototype.addSuite = function (suite) {
    suite.parent = this;
    suite.timeout(this.timeout());
    suite.retries(this.retries());
    suite.enableTimeouts(this.enableTimeouts());
    suite.slow(this.slow());
    suite.bail(this.bail());
    this.suites.push(suite);
    this.emit('suite', suite);
    return this;
  };
  
  /**
   * Add a `test` to this suite.
   *
   * @api private
   * @param {Test} test
   * @return {Suite} for chaining
   */
  Suite.prototype.addTest = function (test) {
    test.parent = this;
    test.timeout(this.timeout());
    test.retries(this.retries());
    test.enableTimeouts(this.enableTimeouts());
    test.slow(this.slow());
    test.ctx = this.ctx;
    this.tests.push(test);
    this.emit('test', test);
    return this;
  };
  
  /**
   * Return the full title generated by recursively concatenating the parent's
   * full title.
   *
   * @api public
   * @return {string}
   */
  Suite.prototype.fullTitle = function () {
    if (this.parent) {
      var full = this.parent.fullTitle();
      if (full) {
        return full + ' ' + this.title;
      }
    }
    return this.title;
  };
  
  /**
   * Return the total number of tests.
   *
   * @api public
   * @return {number}
   */
  Suite.prototype.total = function () {
    return utils.reduce(this.suites, function (sum, suite) {
      return sum + suite.total();
    }, 0) + this.tests.length;
  };
  
  /**
   * Iterates through each suite recursively to find all tests. Applies a
   * function in the format `fn(test)`.
   *
   * @api private
   * @param {Function} fn
   * @return {Suite}
   */
  Suite.prototype.eachTest = function (fn) {
    utils.forEach(this.tests, fn);
    utils.forEach(this.suites, function (suite) {
      suite.eachTest(fn);
    });
    return this;
  };
  
  /**
   * This will run the root suite if we happen to be running in delayed mode.
   */
  Suite.prototype.run = function run () {
    if (this.root) {
      this.emit('run');
    }
  };
  
  },{"./hook":7,"./ms":15,"./utils":38,"debug":2,"events":3}],36:[function(require,module,exports){
  'use strict';
  
  /**
   * Module dependencies.
   */
  
  var Runnable = require('./runnable');
  var create = require('lodash.create');
  var isString = require('./utils').isString;
  
  /**
   * Expose `Test`.
   */
  
  module.exports = Test;
  
  /**
   * Initialize a new `Test` with the given `title` and callback `fn`.
   *
   * @api private
   * @param {String} title
   * @param {Function} fn
   */
  function Test (title, fn) {
    if (!isString(title)) {
      throw new Error('Test `title` should be a "string" but "' + typeof title + '" was given instead.');
    }
    Runnable.call(this, title, fn);
    this.pending = !fn;
    this.type = 'test';
  }
  
  /**
   * Inherit from `Runnable.prototype`.
   */
  Test.prototype = create(Runnable.prototype, {
    constructor: Test
  });
  
  Test.prototype.clone = function () {
    var test = new Test(this.title, this.fn);
    test.timeout(this.timeout());
    test.slow(this.slow());
    test.enableTimeouts(this.enableTimeouts());
    test.retries(this.retries());
    test.currentRetry(this.currentRetry());
    test.globals(this.globals());
    test.parent = this.parent;
    test.file = this.file;
    test.ctx = this.ctx;
    return test;
  };
  
  },{"./runnable":33,"./utils":38,"lodash.create":60}],37:[function(require,module,exports){
  'use strict';
  
  /**
   * Pad a `number` with a ten's place zero.
   *
   * @param {number} number
   * @return {string}
   */
  function pad(number) {
    var n = number.toString();
    return n.length === 1 ? '0' + n : n;
  }
  
  /**
   * Turn a `date` into an ISO string.
   *
   * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/toISOString
   *
   * @param {Date} date
   * @return {string}
   */
  function toISOString(date) {
    return date.getUTCFullYear()
      + '-' + pad(date.getUTCMonth() + 1)
      + '-' + pad(date.getUTCDate())
      + 'T' + pad(date.getUTCHours())
      + ':' + pad(date.getUTCMinutes())
      + ':' + pad(date.getUTCSeconds())
      + '.' + String((date.getUTCMilliseconds()/1000).toFixed(3)).slice(2, 5)
      + 'Z';
  }
  
  /*
   * Exports.
   */
  
  module.exports = toISOString;
  
  },{}],38:[function(require,module,exports){
  (function (process,Buffer){
  'use strict';
  
  /* eslint-env browser */
  
  /**
   * Module dependencies.
   */
  
  var JSON = require('json3');
  var basename = require('path').basename;
  var debug = require('debug')('mocha:watch');
  var exists = require('fs').existsSync || require('path').existsSync;
  var glob = require('glob');
  var path = require('path');
  var join = path.join;
  var readdirSync = require('fs').readdirSync;
  var statSync = require('fs').statSync;
  var watchFile = require('fs').watchFile;
  var lstatSync = require('fs').lstatSync;
  var toISOString = require('./to-iso-string');
  
  /**
   * Ignored directories.
   */
  
  var ignore = ['node_modules', '.git'];
  
  exports.inherits = require('util').inherits;
  
  /**
   * Escape special characters in the given string of html.
   *
   * @api private
   * @param  {string} html
   * @return {string}
   */
  exports.escape = function (html) {
    return String(html)
      .replace(/&/g, '&amp;')
      .replace(/"/g, '&quot;')
      .replace(/</g, '&lt;')
      .replace(/>/g, '&gt;');
  };
  
  /**
   * Array#forEach (<=IE8)
   *
   * @api private
   * @param {Array} arr
   * @param {Function} fn
   * @param {Object} scope
   */
  exports.forEach = function (arr, fn, scope) {
    for (var i = 0, l = arr.length; i < l; i++) {
      fn.call(scope, arr[i], i);
    }
  };
  
  /**
   * Test if the given obj is type of string.
   *
   * @api private
   * @param {Object} obj
   * @return {boolean}
   */
  exports.isString = function (obj) {
    return typeof obj === 'string';
  };
  
  /**
   * Array#map (<=IE8)
   *
   * @api private
   * @param {Array} arr
   * @param {Function} fn
   * @param {Object} scope
   * @return {Array}
   */
  exports.map = function (arr, fn, scope) {
    var result = [];
    for (var i = 0, l = arr.length; i < l; i++) {
      result.push(fn.call(scope, arr[i], i, arr));
    }
    return result;
  };
  
  /**
   * Array#indexOf (<=IE8)
   *
   * @api private
   * @param {Array} arr
   * @param {Object} obj to find index of
   * @param {number} start
   * @return {number}
   */
  var indexOf = exports.indexOf = function (arr, obj, start) {
    for (var i = start || 0, l = arr.length; i < l; i++) {
      if (arr[i] === obj) {
        return i;
      }
    }
    return -1;
  };
  
  /**
   * Array#reduce (<=IE8)
   *
   * @api private
   * @param {Array} arr
   * @param {Function} fn
   * @param {Object} val Initial value.
   * @return {*}
   */
  var reduce = exports.reduce = function (arr, fn, val) {
    var rval = val;
  
    for (var i = 0, l = arr.length; i < l; i++) {
      rval = fn(rval, arr[i], i, arr);
    }
  
    return rval;
  };
  
  /**
   * Array#filter (<=IE8)
   *
   * @api private
   * @param {Array} arr
   * @param {Function} fn
   * @return {Array}
   */
  exports.filter = function (arr, fn) {
    var ret = [];
  
    for (var i = 0, l = arr.length; i < l; i++) {
      var val = arr[i];
      if (fn(val, i, arr)) {
        ret.push(val);
      }
    }
  
    return ret;
  };
  
  /**
   * Array#some (<=IE8)
   *
   * @api private
   * @param {Array} arr
   * @param {Function} fn
   * @return {Array}
   */
  exports.some = function (arr, fn) {
    for (var i = 0, l = arr.length; i < l; i++) {
      if (fn(arr[i])) {
        return true;
      }
    }
    return false;
  };
  
  /**
   * Object.keys (<=IE8)
   *
   * @api private
   * @param {Object} obj
   * @return {Array} keys
   */
  exports.keys = typeof Object.keys === 'function' ? Object.keys : function (obj) {
    var keys = [];
    var has = Object.prototype.hasOwnProperty; // for `window` on <=IE8
  
    for (var key in obj) {
      if (has.call(obj, key)) {
        keys.push(key);
      }
    }
  
    return keys;
  };
  
  /**
   * Watch the given `files` for changes
   * and invoke `fn(file)` on modification.
   *
   * @api private
   * @param {Array} files
   * @param {Function} fn
   */
  exports.watch = function (files, fn) {
    var options = { interval: 100 };
    files.forEach(function (file) {
      debug('file %s', file);
      watchFile(file, options, function (curr, prev) {
        if (prev.mtime < curr.mtime) {
          fn(file);
        }
      });
    });
  };
  
  /**
   * Array.isArray (<=IE8)
   *
   * @api private
   * @param {Object} obj
   * @return {Boolean}
   */
  var isArray = typeof Array.isArray === 'function' ? Array.isArray : function (obj) {
    return Object.prototype.toString.call(obj) === '[object Array]';
  };
  
  exports.isArray = isArray;
  
  /**
   * Buffer.prototype.toJSON polyfill.
   *
   * @type {Function}
   */
  if (typeof Buffer !== 'undefined' && Buffer.prototype) {
    Buffer.prototype.toJSON = Buffer.prototype.toJSON || function () {
      return Array.prototype.slice.call(this, 0);
    };
  }
  
  /**
   * Ignored files.
   *
   * @api private
   * @param {string} path
   * @return {boolean}
   */
  function ignored (path) {
    return !~ignore.indexOf(path);
  }
  
  /**
   * Lookup files in the given `dir`.
   *
   * @api private
   * @param {string} dir
   * @param {string[]} [ext=['.js']]
   * @param {Array} [ret=[]]
   * @return {Array}
   */
  exports.files = function (dir, ext, ret) {
    ret = ret || [];
    ext = ext || ['js'];
  
    var re = new RegExp('\\.(' + ext.join('|') + ')$');
  
    readdirSync(dir)
      .filter(ignored)
      .forEach(function (path) {
        path = join(dir, path);
        if (lstatSync(path).isDirectory()) {
          exports.files(path, ext, ret);
        } else if (path.match(re)) {
          ret.push(path);
        }
      });
  
    return ret;
  };
  
  /**
   * Compute a slug from the given `str`.
   *
   * @api private
   * @param {string} str
   * @return {string}
   */
  exports.slug = function (str) {
    return str
      .toLowerCase()
      .replace(/ +/g, '-')
      .replace(/[^-\w]/g, '');
  };
  
  /**
   * Strip the function definition from `str`, and re-indent for pre whitespace.
   *
   * @param {string} str
   * @return {string}
   */
  exports.clean = function (str) {
    str = str
      .replace(/\r\n?|[\n\u2028\u2029]/g, '\n').replace(/^\uFEFF/, '')
      // (traditional)->  space/name     parameters    body     (lambda)-> parameters       body   multi-statement/single          keep body content
      .replace(/^function(?:\s*|\s+[^(]*)\([^)]*\)\s*\{((?:.|\n)*?)\s*\}$|^\([^)]*\)\s*=>\s*(?:\{((?:.|\n)*?)\s*\}|((?:.|\n)*))$/, '$1$2$3');
  
    var spaces = str.match(/^\n?( *)/)[1].length;
    var tabs = str.match(/^\n?(\t*)/)[1].length;
    var re = new RegExp('^\n?' + (tabs ? '\t' : ' ') + '{' + (tabs || spaces) + '}', 'gm');
  
    str = str.replace(re, '');
  
    return exports.trim(str);
  };
  
  /**
   * Trim the given `str`.
   *
   * @api private
   * @param {string} str
   * @return {string}
   */
  exports.trim = function (str) {
    return str.replace(/^\s+|\s+$/g, '');
  };
  
  /**
   * Parse the given `qs`.
   *
   * @api private
   * @param {string} qs
   * @return {Object}
   */
  exports.parseQuery = function (qs) {
    return reduce(qs.replace('?', '').split('&'), function (obj, pair) {
      var i = pair.indexOf('=');
      var key = pair.slice(0, i);
      var val = pair.slice(++i);
  
      obj[key] = decodeURIComponent(val);
      return obj;
    }, {});
  };
  
  /**
   * Highlight the given string of `js`.
   *
   * @api private
   * @param {string} js
   * @return {string}
   */
  function highlight (js) {
    return js
      .replace(/</g, '&lt;')
      .replace(/>/g, '&gt;')
      .replace(/\/\/(.*)/gm, '<span class="comment">//$1</span>')
      .replace(/('.*?')/gm, '<span class="string">$1</span>')
      .replace(/(\d+\.\d+)/gm, '<span class="number">$1</span>')
      .replace(/(\d+)/gm, '<span class="number">$1</span>')
      .replace(/\bnew[ \t]+(\w+)/gm, '<span class="keyword">new</span> <span class="init">$1</span>')
      .replace(/\b(function|new|throw|return|var|if|else)\b/gm, '<span class="keyword">$1</span>');
  }
  
  /**
   * Highlight the contents of tag `name`.
   *
   * @api private
   * @param {string} name
   */
  exports.highlightTags = function (name) {
    var code = document.getElementById('mocha').getElementsByTagName(name);
    for (var i = 0, len = code.length; i < len; ++i) {
      code[i].innerHTML = highlight(code[i].innerHTML);
    }
  };
  
  /**
   * If a value could have properties, and has none, this function is called,
   * which returns a string representation of the empty value.
   *
   * Functions w/ no properties return `'[Function]'`
   * Arrays w/ length === 0 return `'[]'`
   * Objects w/ no properties return `'{}'`
   * All else: return result of `value.toString()`
   *
   * @api private
   * @param {*} value The value to inspect.
   * @param {string} typeHint The type of the value
   * @returns {string}
   */
  function emptyRepresentation (value, typeHint) {
    switch (typeHint) {
      case 'function':
        return '[Function]';
      case 'object':
        return '{}';
      case 'array':
        return '[]';
      default:
        return value.toString();
    }
  }
  
  /**
   * Takes some variable and asks `Object.prototype.toString()` what it thinks it
   * is.
   *
   * @api private
   * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/toString
   * @param {*} value The value to test.
   * @returns {string} Computed type
   * @example
   * type({}) // 'object'
   * type([]) // 'array'
   * type(1) // 'number'
   * type(false) // 'boolean'
   * type(Infinity) // 'number'
   * type(null) // 'null'
   * type(new Date()) // 'date'
   * type(/foo/) // 'regexp'
   * type('type') // 'string'
   * type(global) // 'global'
   * type(new String('foo') // 'object'
   */
  var type = exports.type = function type (value) {
    if (value === undefined) {
      return 'undefined';
    } else if (value === null) {
      return 'null';
    } else if (typeof Buffer !== 'undefined' && Buffer.isBuffer(value)) {
      return 'buffer';
    }
    return Object.prototype.toString.call(value)
      .replace(/^\[.+\s(.+?)\]$/, '$1')
      .toLowerCase();
  };
  
  /**
   * Stringify `value`. Different behavior depending on type of value:
   *
   * - If `value` is undefined or null, return `'[undefined]'` or `'[null]'`, respectively.
   * - If `value` is not an object, function or array, return result of `value.toString()` wrapped in double-quotes.
   * - If `value` is an *empty* object, function, or array, return result of function
   *   {@link emptyRepresentation}.
   * - If `value` has properties, call {@link exports.canonicalize} on it, then return result of
   *   JSON.stringify().
   *
   * @api private
   * @see exports.type
   * @param {*} value
   * @return {string}
   */
  exports.stringify = function (value) {
    var typeHint = type(value);
  
    if (!~indexOf(['object', 'array', 'function'], typeHint)) {
      if (typeHint === 'buffer') {
        var json = value.toJSON();
        // Based on the toJSON result
        return jsonStringify(json.data && json.type ? json.data : json, 2)
          .replace(/,(\n|$)/g, '$1');
      }
  
      // IE7/IE8 has a bizarre String constructor; needs to be coerced
      // into an array and back to obj.
      if (typeHint === 'string' && typeof value === 'object') {
        value = reduce(value.split(''), function (acc, char, idx) {
          acc[idx] = char;
          return acc;
        }, {});
        typeHint = 'object';
      } else {
        return jsonStringify(value);
      }
    }
  
    for (var prop in value) {
      if (Object.prototype.hasOwnProperty.call(value, prop)) {
        return jsonStringify(exports.canonicalize(value, null, typeHint), 2).replace(/,(\n|$)/g, '$1');
      }
    }
  
    return emptyRepresentation(value, typeHint);
  };
  
  /**
   * like JSON.stringify but more sense.
   *
   * @api private
   * @param {Object}  object
   * @param {number=} spaces
   * @param {number=} depth
   * @returns {*}
   */
  function jsonStringify (object, spaces, depth) {
    if (typeof spaces === 'undefined') {
      // primitive types
      return _stringify(object);
    }
  
    depth = depth || 1;
    var space = spaces * depth;
    var str = isArray(object) ? '[' : '{';
    var end = isArray(object) ? ']' : '}';
    var length = typeof object.length === 'number' ? object.length : exports.keys(object).length;
    // `.repeat()` polyfill
    function repeat (s, n) {
      return new Array(n).join(s);
    }
  
    function _stringify (val) {
      switch (type(val)) {
        case 'null':
        case 'undefined':
          val = '[' + val + ']';
          break;
        case 'array':
        case 'object':
          val = jsonStringify(val, spaces, depth + 1);
          break;
        case 'boolean':
        case 'regexp':
        case 'symbol':
        case 'number':
          val = val === 0 && (1 / val) === -Infinity // `-0`
            ? '-0'
            : val.toString();
          break;
        case 'date':
          var sDate;
          if (isNaN(val.getTime())) { // Invalid date
            sDate = val.toString();
          } else {
            sDate = val.toISOString ? val.toISOString() : toISOString(val);
          }
          val = '[Date: ' + sDate + ']';
          break;
        case 'buffer':
          var json = val.toJSON();
          // Based on the toJSON result
          json = json.data && json.type ? json.data : json;
          val = '[Buffer: ' + jsonStringify(json, 2, depth + 1) + ']';
          break;
        default:
          val = (val === '[Function]' || val === '[Circular]')
            ? val
            : JSON.stringify(val); // string
      }
      return val;
    }
  
    for (var i in object) {
      if (!Object.prototype.hasOwnProperty.call(object, i)) {
        continue; // not my business
      }
      --length;
      str += '\n ' + repeat(' ', space) +
        (isArray(object) ? '' : '"' + i + '": ') + // key
        _stringify(object[i]) +                    // value
        (length ? ',' : '');                       // comma
    }
  
    return str +
      // [], {}
      (str.length !== 1 ? '\n' + repeat(' ', --space) + end : end);
  }
  
  /**
   * Test if a value is a buffer.
   *
   * @api private
   * @param {*} value The value to test.
   * @return {boolean} True if `value` is a buffer, otherwise false
   */
  exports.isBuffer = function (value) {
    return typeof Buffer !== 'undefined' && Buffer.isBuffer(value);
  };
  
  /**
   * Return a new Thing that has the keys in sorted order. Recursive.
   *
   * If the Thing...
   * - has already been seen, return string `'[Circular]'`
   * - is `undefined`, return string `'[undefined]'`
   * - is `null`, return value `null`
   * - is some other primitive, return the value
   * - is not a primitive or an `Array`, `Object`, or `Function`, return the value of the Thing's `toString()` method
   * - is a non-empty `Array`, `Object`, or `Function`, return the result of calling this function again.
   * - is an empty `Array`, `Object`, or `Function`, return the result of calling `emptyRepresentation()`
   *
   * @api private
   * @see {@link exports.stringify}
   * @param {*} value Thing to inspect.  May or may not have properties.
   * @param {Array} [stack=[]] Stack of seen values
   * @param {string} [typeHint] Type hint
   * @return {(Object|Array|Function|string|undefined)}
   */
  exports.canonicalize = function canonicalize (value, stack, typeHint) {
    var canonicalizedObj;
    /* eslint-disable no-unused-vars */
    var prop;
    /* eslint-enable no-unused-vars */
    typeHint = typeHint || type(value);
    function withStack (value, fn) {
      stack.push(value);
      fn();
      stack.pop();
    }
  
    stack = stack || [];
  
    if (indexOf(stack, value) !== -1) {
      return '[Circular]';
    }
  
    switch (typeHint) {
      case 'undefined':
      case 'buffer':
      case 'null':
        canonicalizedObj = value;
        break;
      case 'array':
        withStack(value, function () {
          canonicalizedObj = exports.map(value, function (item) {
            return exports.canonicalize(item, stack);
          });
        });
        break;
      case 'function':
        /* eslint-disable guard-for-in */
        for (prop in value) {
          canonicalizedObj = {};
          break;
        }
        /* eslint-enable guard-for-in */
        if (!canonicalizedObj) {
          canonicalizedObj = emptyRepresentation(value, typeHint);
          break;
        }
      /* falls through */
      case 'object':
        canonicalizedObj = canonicalizedObj || {};
        withStack(value, function () {
          exports.forEach(exports.keys(value).sort(), function (key) {
            canonicalizedObj[key] = exports.canonicalize(value[key], stack);
          });
        });
        break;
      case 'date':
      case 'number':
      case 'regexp':
      case 'boolean':
      case 'symbol':
        canonicalizedObj = value;
        break;
      default:
        canonicalizedObj = value + '';
    }
  
    return canonicalizedObj;
  };
  
  /**
   * Lookup file names at the given `path`.
   *
   * @api public
   * @param {string} path Base path to start searching from.
   * @param {string[]} extensions File extensions to look for.
   * @param {boolean} recursive Whether or not to recurse into subdirectories.
   * @return {string[]} An array of paths.
   */
  exports.lookupFiles = function lookupFiles (path, extensions, recursive) {
    var files = [];
    var re = new RegExp('\\.(' + extensions.join('|') + ')$');
  
    if (!exists(path)) {
      if (exists(path + '.js')) {
        path += '.js';
      } else {
        files = glob.sync(path);
        if (!files.length) {
          throw new Error("cannot resolve path (or pattern) '" + path + "'");
        }
        return files;
      }
    }
  
    try {
      var stat = statSync(path);
      if (stat.isFile()) {
        return path;
      }
    } catch (err) {
      // ignore error
      return;
    }
  
    readdirSync(path).forEach(function (file) {
      file = join(path, file);
      try {
        var stat = statSync(file);
        if (stat.isDirectory()) {
          if (recursive) {
            files = files.concat(lookupFiles(file, extensions, recursive));
          }
          return;
        }
      } catch (err) {
        // ignore error
        return;
      }
      if (!stat.isFile() || !re.test(file) || basename(file)[0] === '.') {
        return;
      }
      files.push(file);
    });
  
    return files;
  };
  
  /**
   * Generate an undefined error with a message warning the user.
   *
   * @return {Error}
   */
  
  exports.undefinedError = function () {
    return new Error('Caught undefined error, did you throw without specifying what?');
  };
  
  /**
   * Generate an undefined error if `err` is not defined.
   *
   * @param {Error} err
   * @return {Error}
   */
  
  exports.getError = function (err) {
    return err || exports.undefinedError();
  };
  
  /**
   * @summary
   * This Filter based on `mocha-clean` module.(see: `github.com/rstacruz/mocha-clean`)
   * @description
   * When invoking this function you get a filter function that get the Error.stack as an input,
   * and return a prettify output.
   * (i.e: strip Mocha and internal node functions from stack trace).
   * @returns {Function}
   */
  exports.stackTraceFilter = function () {
    // TODO: Replace with `process.browser`
    var is = typeof document === 'undefined' ? { node: true } : { browser: true };
    var slash = path.sep;
    var cwd;
    if (is.node) {
      cwd = process.cwd() + slash;
    } else {
      cwd = (typeof location === 'undefined' ? window.location : location).href.replace(/\/[^\/]*$/, '/');
      slash = '/';
    }
  
    function isMochaInternal (line) {
      return (~line.indexOf('node_modules' + slash + 'mocha' + slash)) ||
        (~line.indexOf('node_modules' + slash + 'mocha.js')) ||
        (~line.indexOf('bower_components' + slash + 'mocha.js')) ||
        (~line.indexOf(slash + 'mocha.js'));
    }
  
    function isNodeInternal (line) {
      return (~line.indexOf('(timers.js:')) ||
        (~line.indexOf('(events.js:')) ||
        (~line.indexOf('(node.js:')) ||
        (~line.indexOf('(module.js:')) ||
        (~line.indexOf('GeneratorFunctionPrototype.next (native)')) ||
        false;
    }
  
    return function (stack) {
      stack = stack.split('\n');
  
      stack = reduce(stack, function (list, line) {
        if (isMochaInternal(line)) {
          return list;
        }
  
        if (is.node && isNodeInternal(line)) {
          return list;
        }
  
        // Clean up cwd(absolute)
        if (/\(?.+:\d+:\d+\)?$/.test(line)) {
          line = line.replace(cwd, '');
        }
  
        list.push(line);
        return list;
      }, []);
  
      return stack.join('\n');
    };
  };
  
  /**
   * Crude, but effective.
   * @api
   * @param {*} value
   * @returns {boolean} Whether or not `value` is a Promise
   */
  exports.isPromise = function isPromise (value) {
    return typeof value === 'object' && typeof value.then === 'function';
  };
  
  /**
   * It's a noop.
   * @api
   */
  exports.noop = function () {};
  
  }).call(this,require('_process'),require("buffer").Buffer)
  },{"./to-iso-string":37,"_process":67,"buffer":44,"debug":2,"fs":42,"glob":42,"json3":54,"path":42,"util":84}],39:[function(require,module,exports){
  'use strict'
  
  exports.byteLength = byteLength
  exports.toByteArray = toByteArray
  exports.fromByteArray = fromByteArray
  
  var lookup = []
  var revLookup = []
  var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
  
  var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
  for (var i = 0, len = code.length; i < len; ++i) {
    lookup[i] = code[i]
    revLookup[code.charCodeAt(i)] = i
  }
  
  revLookup['-'.charCodeAt(0)] = 62
  revLookup['_'.charCodeAt(0)] = 63
  
  function placeHoldersCount (b64) {
    var len = b64.length
    if (len % 4 > 0) {
      throw new Error('Invalid string. Length must be a multiple of 4')
    }
  
    // the number of equal signs (place holders)
    // if there are two placeholders, than the two characters before it
    // represent one byte
    // if there is only one, then the three characters before it represent 2 bytes
    // this is just a cheap hack to not do indexOf twice
    return b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0
  }
  
  function byteLength (b64) {
    // base64 is 4/3 + up to two characters of the original data
    return b64.length * 3 / 4 - placeHoldersCount(b64)
  }
  
  function toByteArray (b64) {
    var i, j, l, tmp, placeHolders, arr
    var len = b64.length
    placeHolders = placeHoldersCount(b64)
  
    arr = new Arr(len * 3 / 4 - placeHolders)
  
    // if there are placeholders, only get up to the last complete 4 chars
    l = placeHolders > 0 ? len - 4 : len
  
    var L = 0
  
    for (i = 0, j = 0; i < l; i += 4, j += 3) {
      tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)]
      arr[L++] = (tmp >> 16) & 0xFF
      arr[L++] = (tmp >> 8) & 0xFF
      arr[L++] = tmp & 0xFF
    }
  
    if (placeHolders === 2) {
      tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4)
      arr[L++] = tmp & 0xFF
    } else if (placeHolders === 1) {
      tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2)
      arr[L++] = (tmp >> 8) & 0xFF
      arr[L++] = tmp & 0xFF
    }
  
    return arr
  }
  
  function tripletToBase64 (num) {
    return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F]
  }
  
  function encodeChunk (uint8, start, end) {
    var tmp
    var output = []
    for (var i = start; i < end; i += 3) {
      tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
      output.push(tripletToBase64(tmp))
    }
    return output.join('')
  }
  
  function fromByteArray (uint8) {
    var tmp
    var len = uint8.length
    var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
    var output = ''
    var parts = []
    var maxChunkLength = 16383 // must be multiple of 3
  
    // go through the array every three bytes, we'll deal with trailing stuff later
    for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
      parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
    }
  
    // pad the end with zeros, but make sure to not forget the extra bytes
    if (extraBytes === 1) {
      tmp = uint8[len - 1]
      output += lookup[tmp >> 2]
      output += lookup[(tmp << 4) & 0x3F]
      output += '=='
    } else if (extraBytes === 2) {
      tmp = (uint8[len - 2] << 8) + (uint8[len - 1])
      output += lookup[tmp >> 10]
      output += lookup[(tmp >> 4) & 0x3F]
      output += lookup[(tmp << 2) & 0x3F]
      output += '='
    }
  
    parts.push(output)
  
    return parts.join('')
  }
  
  },{}],40:[function(require,module,exports){
  
  },{}],41:[function(require,module,exports){
  (function (process){
  var WritableStream = require('stream').Writable
  var inherits = require('util').inherits
  
  module.exports = BrowserStdout
  
  
  inherits(BrowserStdout, WritableStream)
  
  function BrowserStdout(opts) {
    if (!(this instanceof BrowserStdout)) return new BrowserStdout(opts)
  
    opts = opts || {}
    WritableStream.call(this, opts)
    this.label = (opts.label !== undefined) ? opts.label : 'stdout'
  }
  
  BrowserStdout.prototype._write = function(chunks, encoding, cb) {
    var output = chunks.toString ? chunks.toString() : chunks
    if (this.label === false) {
      console.log(output)
    } else {
      console.log(this.label+':', output)
    }
    process.nextTick(cb)
  }
  
  }).call(this,require('_process'))
  },{"_process":67,"stream":79,"util":84}],42:[function(require,module,exports){
  arguments[4][40][0].apply(exports,arguments)
  },{"dup":40}],43:[function(require,module,exports){
  (function (global){
  'use strict';
  
  var buffer = require('buffer');
  var Buffer = buffer.Buffer;
  var SlowBuffer = buffer.SlowBuffer;
  var MAX_LEN = buffer.kMaxLength || 2147483647;
  exports.alloc = function alloc(size, fill, encoding) {
    if (typeof Buffer.alloc === 'function') {
      return Buffer.alloc(size, fill, encoding);
    }
    if (typeof encoding === 'number') {
      throw new TypeError('encoding must not be number');
    }
    if (typeof size !== 'number') {
      throw new TypeError('size must be a number');
    }
    if (size > MAX_LEN) {
      throw new RangeError('size is too large');
    }
    var enc = encoding;
    var _fill = fill;
    if (_fill === undefined) {
      enc = undefined;
      _fill = 0;
    }
    var buf = new Buffer(size);
    if (typeof _fill === 'string') {
      var fillBuf = new Buffer(_fill, enc);
      var flen = fillBuf.length;
      var i = -1;
      while (++i < size) {
        buf[i] = fillBuf[i % flen];
      }
    } else {
      buf.fill(_fill);
    }
    return buf;
  }
  exports.allocUnsafe = function allocUnsafe(size) {
    if (typeof Buffer.allocUnsafe === 'function') {
      return Buffer.allocUnsafe(size);
    }
    if (typeof size !== 'number') {
      throw new TypeError('size must be a number');
    }
    if (size > MAX_LEN) {
      throw new RangeError('size is too large');
    }
    return new Buffer(size);
  }
  exports.from = function from(value, encodingOrOffset, length) {
    if (typeof Buffer.from === 'function' && (!global.Uint8Array || Uint8Array.from !== Buffer.from)) {
      return Buffer.from(value, encodingOrOffset, length);
    }
    if (typeof value === 'number') {
      throw new TypeError('"value" argument must not be a number');
    }
    if (typeof value === 'string') {
      return new Buffer(value, encodingOrOffset);
    }
    if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {
      var offset = encodingOrOffset;
      if (arguments.length === 1) {
        return new Buffer(value);
      }
      if (typeof offset === 'undefined') {
        offset = 0;
      }
      var len = length;
      if (typeof len === 'undefined') {
        len = value.byteLength - offset;
      }
      if (offset >= value.byteLength) {
        throw new RangeError('\'offset\' is out of bounds');
      }
      if (len > value.byteLength - offset) {
        throw new RangeError('\'length\' is out of bounds');
      }
      return new Buffer(value.slice(offset, offset + len));
    }
    if (Buffer.isBuffer(value)) {
      var out = new Buffer(value.length);
      value.copy(out, 0, 0, value.length);
      return out;
    }
    if (value) {
      if (Array.isArray(value) || (typeof ArrayBuffer !== 'undefined' && value.buffer instanceof ArrayBuffer) || 'length' in value) {
        return new Buffer(value);
      }
      if (value.type === 'Buffer' && Array.isArray(value.data)) {
        return new Buffer(value.data);
      }
    }
  
    throw new TypeError('First argument must be a string, Buffer, ' + 'ArrayBuffer, Array, or array-like object.');
  }
  exports.allocUnsafeSlow = function allocUnsafeSlow(size) {
    if (typeof Buffer.allocUnsafeSlow === 'function') {
      return Buffer.allocUnsafeSlow(size);
    }
    if (typeof size !== 'number') {
      throw new TypeError('size must be a number');
    }
    if (size >= MAX_LEN) {
      throw new RangeError('size is too large');
    }
    return new SlowBuffer(size);
  }
  
  }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
  },{"buffer":44}],44:[function(require,module,exports){
  (function (global){
  /*!
   * The buffer module from node.js, for the browser.
   *
   * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
   * @license  MIT
   */
  /* eslint-disable no-proto */
  
  'use strict'
  
  var base64 = require('base64-js')
  var ieee754 = require('ieee754')
  var isArray = require('isarray')
  
  exports.Buffer = Buffer
  exports.SlowBuffer = SlowBuffer
  exports.INSPECT_MAX_BYTES = 50
  
  /**
   * If `Buffer.TYPED_ARRAY_SUPPORT`:
   *   === true    Use Uint8Array implementation (fastest)
   *   === false   Use Object implementation (most compatible, even IE6)
   *
   * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
   * Opera 11.6+, iOS 4.2+.
   *
   * Due to various browser bugs, sometimes the Object implementation will be used even
   * when the browser supports typed arrays.
   *
   * Note:
   *
   *   - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,
   *     See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
   *
   *   - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
   *
   *   - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
   *     incorrect length in some situations.
  
   * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they
   * get the Object implementation, which is slower but behaves correctly.
   */
  Buffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined
    ? global.TYPED_ARRAY_SUPPORT
    : typedArraySupport()
  
  /*
   * Export kMaxLength after typed array support is determined.
   */
  exports.kMaxLength = kMaxLength()
  
  function typedArraySupport () {
    try {
      var arr = new Uint8Array(1)
      arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }}
      return arr.foo() === 42 && // typed array instances can be augmented
          typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`
          arr.subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`
    } catch (e) {
      return false
    }
  }
  
  function kMaxLength () {
    return Buffer.TYPED_ARRAY_SUPPORT
      ? 0x7fffffff
      : 0x3fffffff
  }
  
  function createBuffer (that, length) {
    if (kMaxLength() < length) {
      throw new RangeError('Invalid typed array length')
    }
    if (Buffer.TYPED_ARRAY_SUPPORT) {
      // Return an augmented `Uint8Array` instance, for best performance
      that = new Uint8Array(length)
      that.__proto__ = Buffer.prototype
    } else {
      // Fallback: Return an object instance of the Buffer class
      if (that === null) {
        that = new Buffer(length)
      }
      that.length = length
    }
  
    return that
  }
  
  /**
   * The Buffer constructor returns instances of `Uint8Array` that have their
   * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
   * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
   * and the `Uint8Array` methods. Square bracket notation works as expected -- it
   * returns a single octet.
   *
   * The `Uint8Array` prototype remains unmodified.
   */
  
  function Buffer (arg, encodingOrOffset, length) {
    if (!Buffer.TYPED_ARRAY_SUPPORT && !(this instanceof Buffer)) {
      return new Buffer(arg, encodingOrOffset, length)
    }
  
    // Common case.
    if (typeof arg === 'number') {
      if (typeof encodingOrOffset === 'string') {
        throw new Error(
          'If encoding is specified then the first argument must be a string'
        )
      }
      return allocUnsafe(this, arg)
    }
    return from(this, arg, encodingOrOffset, length)
  }
  
  Buffer.poolSize = 8192 // not used by this implementation
  
  // TODO: Legacy, not needed anymore. Remove in next major version.
  Buffer._augment = function (arr) {
    arr.__proto__ = Buffer.prototype
    return arr
  }
  
  function from (that, value, encodingOrOffset, length) {
    if (typeof value === 'number') {
      throw new TypeError('"value" argument must not be a number')
    }
  
    if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {
      return fromArrayBuffer(that, value, encodingOrOffset, length)
    }
  
    if (typeof value === 'string') {
      return fromString(that, value, encodingOrOffset)
    }
  
    return fromObject(that, value)
  }
  
  /**
   * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
   * if value is a number.
   * Buffer.from(str[, encoding])
   * Buffer.from(array)
   * Buffer.from(buffer)
   * Buffer.from(arrayBuffer[, byteOffset[, length]])
   **/
  Buffer.from = function (value, encodingOrOffset, length) {
    return from(null, value, encodingOrOffset, length)
  }
  
  if (Buffer.TYPED_ARRAY_SUPPORT) {
    Buffer.prototype.__proto__ = Uint8Array.prototype
    Buffer.__proto__ = Uint8Array
    if (typeof Symbol !== 'undefined' && Symbol.species &&
        Buffer[Symbol.species] === Buffer) {
      // Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
      Object.defineProperty(Buffer, Symbol.species, {
        value: null,
        configurable: true
      })
    }
  }
  
  function assertSize (size) {
    if (typeof size !== 'number') {
      throw new TypeError('"size" argument must be a number')
    } else if (size < 0) {
      throw new RangeError('"size" argument must not be negative')
    }
  }
  
  function alloc (that, size, fill, encoding) {
    assertSize(size)
    if (size <= 0) {
      return createBuffer(that, size)
    }
    if (fill !== undefined) {
      // Only pay attention to encoding if it's a string. This
      // prevents accidentally sending in a number that would
      // be interpretted as a start offset.
      return typeof encoding === 'string'
        ? createBuffer(that, size).fill(fill, encoding)
        : createBuffer(that, size).fill(fill)
    }
    return createBuffer(that, size)
  }
  
  /**
   * Creates a new filled Buffer instance.
   * alloc(size[, fill[, encoding]])
   **/
  Buffer.alloc = function (size, fill, encoding) {
    return alloc(null, size, fill, encoding)
  }
  
  function allocUnsafe (that, size) {
    assertSize(size)
    that = createBuffer(that, size < 0 ? 0 : checked(size) | 0)
    if (!Buffer.TYPED_ARRAY_SUPPORT) {
      for (var i = 0; i < size; ++i) {
        that[i] = 0
      }
    }
    return that
  }
  
  /**
   * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
   * */
  Buffer.allocUnsafe = function (size) {
    return allocUnsafe(null, size)
  }
  /**
   * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
   */
  Buffer.allocUnsafeSlow = function (size) {
    return allocUnsafe(null, size)
  }
  
  function fromString (that, string, encoding) {
    if (typeof encoding !== 'string' || encoding === '') {
      encoding = 'utf8'
    }
  
    if (!Buffer.isEncoding(encoding)) {
      throw new TypeError('"encoding" must be a valid string encoding')
    }
  
    var length = byteLength(string, encoding) | 0
    that = createBuffer(that, length)
  
    var actual = that.write(string, encoding)
  
    if (actual !== length) {
      // Writing a hex string, for example, that contains invalid characters will
      // cause everything after the first invalid character to be ignored. (e.g.
      // 'abxxcd' will be treated as 'ab')
      that = that.slice(0, actual)
    }
  
    return that
  }
  
  function fromArrayLike (that, array) {
    var length = array.length < 0 ? 0 : checked(array.length) | 0
    that = createBuffer(that, length)
    for (var i = 0; i < length; i += 1) {
      that[i] = array[i] & 255
    }
    return that
  }
  
  function fromArrayBuffer (that, array, byteOffset, length) {
    array.byteLength // this throws if `array` is not a valid ArrayBuffer
  
    if (byteOffset < 0 || array.byteLength < byteOffset) {
      throw new RangeError('\'offset\' is out of bounds')
    }
  
    if (array.byteLength < byteOffset + (length || 0)) {
      throw new RangeError('\'length\' is out of bounds')
    }
  
    if (byteOffset === undefined && length === undefined) {
      array = new Uint8Array(array)
    } else if (length === undefined) {
      array = new Uint8Array(array, byteOffset)
    } else {
      array = new Uint8Array(array, byteOffset, length)
    }
  
    if (Buffer.TYPED_ARRAY_SUPPORT) {
      // Return an augmented `Uint8Array` instance, for best performance
      that = array
      that.__proto__ = Buffer.prototype
    } else {
      // Fallback: Return an object instance of the Buffer class
      that = fromArrayLike(that, array)
    }
    return that
  }
  
  function fromObject (that, obj) {
    if (Buffer.isBuffer(obj)) {
      var len = checked(obj.length) | 0
      that = createBuffer(that, len)
  
      if (that.length === 0) {
        return that
      }
  
      obj.copy(that, 0, 0, len)
      return that
    }
  
    if (obj) {
      if ((typeof ArrayBuffer !== 'undefined' &&
          obj.buffer instanceof ArrayBuffer) || 'length' in obj) {
        if (typeof obj.length !== 'number' || isnan(obj.length)) {
          return createBuffer(that, 0)
        }
        return fromArrayLike(that, obj)
      }
  
      if (obj.type === 'Buffer' && isArray(obj.data)) {
        return fromArrayLike(that, obj.data)
      }
    }
  
    throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')
  }
  
  function checked (length) {
    // Note: cannot use `length < kMaxLength()` here because that fails when
    // length is NaN (which is otherwise coerced to zero.)
    if (length >= kMaxLength()) {
      throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
                           'size: 0x' + kMaxLength().toString(16) + ' bytes')
    }
    return length | 0
  }
  
  function SlowBuffer (length) {
    if (+length != length) { // eslint-disable-line eqeqeq
      length = 0
    }
    return Buffer.alloc(+length)
  }
  
  Buffer.isBuffer = function isBuffer (b) {
    return !!(b != null && b._isBuffer)
  }
  
  Buffer.compare = function compare (a, b) {
    if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
      throw new TypeError('Arguments must be Buffers')
    }
  
    if (a === b) return 0
  
    var x = a.length
    var y = b.length
  
    for (var i = 0, len = Math.min(x, y); i < len; ++i) {
      if (a[i] !== b[i]) {
        x = a[i]
        y = b[i]
        break
      }
    }
  
    if (x < y) return -1
    if (y < x) return 1
    return 0
  }
  
  Buffer.isEncoding = function isEncoding (encoding) {
    switch (String(encoding).toLowerCase()) {
      case 'hex':
      case 'utf8':
      case 'utf-8':
      case 'ascii':
      case 'latin1':
      case 'binary':
      case 'base64':
      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return true
      default:
        return false
    }
  }
  
  Buffer.concat = function concat (list, length) {
    if (!isArray(list)) {
      throw new TypeError('"list" argument must be an Array of Buffers')
    }
  
    if (list.length === 0) {
      return Buffer.alloc(0)
    }
  
    var i
    if (length === undefined) {
      length = 0
      for (i = 0; i < list.length; ++i) {
        length += list[i].length
      }
    }
  
    var buffer = Buffer.allocUnsafe(length)
    var pos = 0
    for (i = 0; i < list.length; ++i) {
      var buf = list[i]
      if (!Buffer.isBuffer(buf)) {
        throw new TypeError('"list" argument must be an Array of Buffers')
      }
      buf.copy(buffer, pos)
      pos += buf.length
    }
    return buffer
  }
  
  function byteLength (string, encoding) {
    if (Buffer.isBuffer(string)) {
      return string.length
    }
    if (typeof ArrayBuffer !== 'undefined' && typeof ArrayBuffer.isView === 'function' &&
        (ArrayBuffer.isView(string) || string instanceof ArrayBuffer)) {
      return string.byteLength
    }
    if (typeof string !== 'string') {
      string = '' + string
    }
  
    var len = string.length
    if (len === 0) return 0
  
    // Use a for loop to avoid recursion
    var loweredCase = false
    for (;;) {
      switch (encoding) {
        case 'ascii':
        case 'latin1':
        case 'binary':
          return len
        case 'utf8':
        case 'utf-8':
        case undefined:
          return utf8ToBytes(string).length
        case 'ucs2':
        case 'ucs-2':
        case 'utf16le':
        case 'utf-16le':
          return len * 2
        case 'hex':
          return len >>> 1
        case 'base64':
          return base64ToBytes(string).length
        default:
          if (loweredCase) return utf8ToBytes(string).length // assume utf8
          encoding = ('' + encoding).toLowerCase()
          loweredCase = true
      }
    }
  }
  Buffer.byteLength = byteLength
  
  function slowToString (encoding, start, end) {
    var loweredCase = false
  
    // No need to verify that "this.length <= MAX_UINT32" since it's a read-only
    // property of a typed array.
  
    // This behaves neither like String nor Uint8Array in that we set start/end
    // to their upper/lower bounds if the value passed is out of range.
    // undefined is handled specially as per ECMA-262 6th Edition,
    // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
    if (start === undefined || start < 0) {
      start = 0
    }
    // Return early if start > this.length. Done here to prevent potential uint32
    // coercion fail below.
    if (start > this.length) {
      return ''
    }
  
    if (end === undefined || end > this.length) {
      end = this.length
    }
  
    if (end <= 0) {
      return ''
    }
  
    // Force coersion to uint32. This will also coerce falsey/NaN values to 0.
    end >>>= 0
    start >>>= 0
  
    if (end <= start) {
      return ''
    }
  
    if (!encoding) encoding = 'utf8'
  
    while (true) {
      switch (encoding) {
        case 'hex':
          return hexSlice(this, start, end)
  
        case 'utf8':
        case 'utf-8':
          return utf8Slice(this, start, end)
  
        case 'ascii':
          return asciiSlice(this, start, end)
  
        case 'latin1':
        case 'binary':
          return latin1Slice(this, start, end)
  
        case 'base64':
          return base64Slice(this, start, end)
  
        case 'ucs2':
        case 'ucs-2':
        case 'utf16le':
        case 'utf-16le':
          return utf16leSlice(this, start, end)
  
        default:
          if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
          encoding = (encoding + '').toLowerCase()
          loweredCase = true
      }
    }
  }
  
  // The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect
  // Buffer instances.
  Buffer.prototype._isBuffer = true
  
  function swap (b, n, m) {
    var i = b[n]
    b[n] = b[m]
    b[m] = i
  }
  
  Buffer.prototype.swap16 = function swap16 () {
    var len = this.length
    if (len % 2 !== 0) {
      throw new RangeError('Buffer size must be a multiple of 16-bits')
    }
    for (var i = 0; i < len; i += 2) {
      swap(this, i, i + 1)
    }
    return this
  }
  
  Buffer.prototype.swap32 = function swap32 () {
    var len = this.length
    if (len % 4 !== 0) {
      throw new RangeError('Buffer size must be a multiple of 32-bits')
    }
    for (var i = 0; i < len; i += 4) {
      swap(this, i, i + 3)
      swap(this, i + 1, i + 2)
    }
    return this
  }
  
  Buffer.prototype.swap64 = function swap64 () {
    var len = this.length
    if (len % 8 !== 0) {
      throw new RangeError('Buffer size must be a multiple of 64-bits')
    }
    for (var i = 0; i < len; i += 8) {
      swap(this, i, i + 7)
      swap(this, i + 1, i + 6)
      swap(this, i + 2, i + 5)
      swap(this, i + 3, i + 4)
    }
    return this
  }
  
  Buffer.prototype.toString = function toString () {
    var length = this.length | 0
    if (length === 0) return ''
    if (arguments.length === 0) return utf8Slice(this, 0, length)
    return slowToString.apply(this, arguments)
  }
  
  Buffer.prototype.equals = function equals (b) {
    if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
    if (this === b) return true
    return Buffer.compare(this, b) === 0
  }
  
  Buffer.prototype.inspect = function inspect () {
    var str = ''
    var max = exports.INSPECT_MAX_BYTES
    if (this.length > 0) {
      str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
      if (this.length > max) str += ' ... '
    }
    return '<Buffer ' + str + '>'
  }
  
  Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
    if (!Buffer.isBuffer(target)) {
      throw new TypeError('Argument must be a Buffer')
    }
  
    if (start === undefined) {
      start = 0
    }
    if (end === undefined) {
      end = target ? target.length : 0
    }
    if (thisStart === undefined) {
      thisStart = 0
    }
    if (thisEnd === undefined) {
      thisEnd = this.length
    }
  
    if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
      throw new RangeError('out of range index')
    }
  
    if (thisStart >= thisEnd && start >= end) {
      return 0
    }
    if (thisStart >= thisEnd) {
      return -1
    }
    if (start >= end) {
      return 1
    }
  
    start >>>= 0
    end >>>= 0
    thisStart >>>= 0
    thisEnd >>>= 0
  
    if (this === target) return 0
  
    var x = thisEnd - thisStart
    var y = end - start
    var len = Math.min(x, y)
  
    var thisCopy = this.slice(thisStart, thisEnd)
    var targetCopy = target.slice(start, end)
  
    for (var i = 0; i < len; ++i) {
      if (thisCopy[i] !== targetCopy[i]) {
        x = thisCopy[i]
        y = targetCopy[i]
        break
      }
    }
  
    if (x < y) return -1
    if (y < x) return 1
    return 0
  }
  
  // Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
  // OR the last index of `val` in `buffer` at offset <= `byteOffset`.
  //
  // Arguments:
  // - buffer - a Buffer to search
  // - val - a string, Buffer, or number
  // - byteOffset - an index into `buffer`; will be clamped to an int32
  // - encoding - an optional encoding, relevant is val is a string
  // - dir - true for indexOf, false for lastIndexOf
  function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
    // Empty buffer means no match
    if (buffer.length === 0) return -1
  
    // Normalize byteOffset
    if (typeof byteOffset === 'string') {
      encoding = byteOffset
      byteOffset = 0
    } else if (byteOffset > 0x7fffffff) {
      byteOffset = 0x7fffffff
    } else if (byteOffset < -0x80000000) {
      byteOffset = -0x80000000
    }
    byteOffset = +byteOffset  // Coerce to Number.
    if (isNaN(byteOffset)) {
      // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
      byteOffset = dir ? 0 : (buffer.length - 1)
    }
  
    // Normalize byteOffset: negative offsets start from the end of the buffer
    if (byteOffset < 0) byteOffset = buffer.length + byteOffset
    if (byteOffset >= buffer.length) {
      if (dir) return -1
      else byteOffset = buffer.length - 1
    } else if (byteOffset < 0) {
      if (dir) byteOffset = 0
      else return -1
    }
  
    // Normalize val
    if (typeof val === 'string') {
      val = Buffer.from(val, encoding)
    }
  
    // Finally, search either indexOf (if dir is true) or lastIndexOf
    if (Buffer.isBuffer(val)) {
      // Special case: looking for empty string/buffer always fails
      if (val.length === 0) {
        return -1
      }
      return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
    } else if (typeof val === 'number') {
      val = val & 0xFF // Search for a byte value [0-255]
      if (Buffer.TYPED_ARRAY_SUPPORT &&
          typeof Uint8Array.prototype.indexOf === 'function') {
        if (dir) {
          return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
        } else {
          return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
        }
      }
      return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
    }
  
    throw new TypeError('val must be string, number or Buffer')
  }
  
  function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
    var indexSize = 1
    var arrLength = arr.length
    var valLength = val.length
  
    if (encoding !== undefined) {
      encoding = String(encoding).toLowerCase()
      if (encoding === 'ucs2' || encoding === 'ucs-2' ||
          encoding === 'utf16le' || encoding === 'utf-16le') {
        if (arr.length < 2 || val.length < 2) {
          return -1
        }
        indexSize = 2
        arrLength /= 2
        valLength /= 2
        byteOffset /= 2
      }
    }
  
    function read (buf, i) {
      if (indexSize === 1) {
        return buf[i]
      } else {
        return buf.readUInt16BE(i * indexSize)
      }
    }
  
    var i
    if (dir) {
      var foundIndex = -1
      for (i = byteOffset; i < arrLength; i++) {
        if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
          if (foundIndex === -1) foundIndex = i
          if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
        } else {
          if (foundIndex !== -1) i -= i - foundIndex
          foundIndex = -1
        }
      }
    } else {
      if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
      for (i = byteOffset; i >= 0; i--) {
        var found = true
        for (var j = 0; j < valLength; j++) {
          if (read(arr, i + j) !== read(val, j)) {
            found = false
            break
          }
        }
        if (found) return i
      }
    }
  
    return -1
  }
  
  Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
    return this.indexOf(val, byteOffset, encoding) !== -1
  }
  
  Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
    return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
  }
  
  Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
    return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
  }
  
  function hexWrite (buf, string, offset, length) {
    offset = Number(offset) || 0
    var remaining = buf.length - offset
    if (!length) {
      length = remaining
    } else {
      length = Number(length)
      if (length > remaining) {
        length = remaining
      }
    }
  
    // must be an even number of digits
    var strLen = string.length
    if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')
  
    if (length > strLen / 2) {
      length = strLen / 2
    }
    for (var i = 0; i < length; ++i) {
      var parsed = parseInt(string.substr(i * 2, 2), 16)
      if (isNaN(parsed)) return i
      buf[offset + i] = parsed
    }
    return i
  }
  
  function utf8Write (buf, string, offset, length) {
    return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
  }
  
  function asciiWrite (buf, string, offset, length) {
    return blitBuffer(asciiToBytes(string), buf, offset, length)
  }
  
  function latin1Write (buf, string, offset, length) {
    return asciiWrite(buf, string, offset, length)
  }
  
  function base64Write (buf, string, offset, length) {
    return blitBuffer(base64ToBytes(string), buf, offset, length)
  }
  
  function ucs2Write (buf, string, offset, length) {
    return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
  }
  
  Buffer.prototype.write = function write (string, offset, length, encoding) {
    // Buffer#write(string)
    if (offset === undefined) {
      encoding = 'utf8'
      length = this.length
      offset = 0
    // Buffer#write(string, encoding)
    } else if (length === undefined && typeof offset === 'string') {
      encoding = offset
      length = this.length
      offset = 0
    // Buffer#write(string, offset[, length][, encoding])
    } else if (isFinite(offset)) {
      offset = offset | 0
      if (isFinite(length)) {
        length = length | 0
        if (encoding === undefined) encoding = 'utf8'
      } else {
        encoding = length
        length = undefined
      }
    // legacy write(string, encoding, offset, length) - remove in v0.13
    } else {
      throw new Error(
        'Buffer.write(string, encoding, offset[, length]) is no longer supported'
      )
    }
  
    var remaining = this.length - offset
    if (length === undefined || length > remaining) length = remaining
  
    if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
      throw new RangeError('Attempt to write outside buffer bounds')
    }
  
    if (!encoding) encoding = 'utf8'
  
    var loweredCase = false
    for (;;) {
      switch (encoding) {
        case 'hex':
          return hexWrite(this, string, offset, length)
  
        case 'utf8':
        case 'utf-8':
          return utf8Write(this, string, offset, length)
  
        case 'ascii':
          return asciiWrite(this, string, offset, length)
  
        case 'latin1':
        case 'binary':
          return latin1Write(this, string, offset, length)
  
        case 'base64':
          // Warning: maxLength not taken into account in base64Write
          return base64Write(this, string, offset, length)
  
        case 'ucs2':
        case 'ucs-2':
        case 'utf16le':
        case 'utf-16le':
          return ucs2Write(this, string, offset, length)
  
        default:
          if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
          encoding = ('' + encoding).toLowerCase()
          loweredCase = true
      }
    }
  }
  
  Buffer.prototype.toJSON = function toJSON () {
    return {
      type: 'Buffer',
      data: Array.prototype.slice.call(this._arr || this, 0)
    }
  }
  
  function base64Slice (buf, start, end) {
    if (start === 0 && end === buf.length) {
      return base64.fromByteArray(buf)
    } else {
      return base64.fromByteArray(buf.slice(start, end))
    }
  }
  
  function utf8Slice (buf, start, end) {
    end = Math.min(buf.length, end)
    var res = []
  
    var i = start
    while (i < end) {
      var firstByte = buf[i]
      var codePoint = null
      var bytesPerSequence = (firstByte > 0xEF) ? 4
        : (firstByte > 0xDF) ? 3
        : (firstByte > 0xBF) ? 2
        : 1
  
      if (i + bytesPerSequence <= end) {
        var secondByte, thirdByte, fourthByte, tempCodePoint
  
        switch (bytesPerSequence) {
          case 1:
            if (firstByte < 0x80) {
              codePoint = firstByte
            }
            break
          case 2:
            secondByte = buf[i + 1]
            if ((secondByte & 0xC0) === 0x80) {
              tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
              if (tempCodePoint > 0x7F) {
                codePoint = tempCodePoint
              }
            }
            break
          case 3:
            secondByte = buf[i + 1]
            thirdByte = buf[i + 2]
            if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
              tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
              if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
                codePoint = tempCodePoint
              }
            }
            break
          case 4:
            secondByte = buf[i + 1]
            thirdByte = buf[i + 2]
            fourthByte = buf[i + 3]
            if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
              tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
              if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
                codePoint = tempCodePoint
              }
            }
        }
      }
  
      if (codePoint === null) {
        // we did not generate a valid codePoint so insert a
        // replacement char (U+FFFD) and advance only 1 byte
        codePoint = 0xFFFD
        bytesPerSequence = 1
      } else if (codePoint > 0xFFFF) {
        // encode to utf16 (surrogate pair dance)
        codePoint -= 0x10000
        res.push(codePoint >>> 10 & 0x3FF | 0xD800)
        codePoint = 0xDC00 | codePoint & 0x3FF
      }
  
      res.push(codePoint)
      i += bytesPerSequence
    }
  
    return decodeCodePointsArray(res)
  }
  
  // Based on http://stackoverflow.com/a/22747272/680742, the browser with
  // the lowest limit is Chrome, with 0x10000 args.
  // We go 1 magnitude less, for safety
  var MAX_ARGUMENTS_LENGTH = 0x1000
  
  function decodeCodePointsArray (codePoints) {
    var len = codePoints.length
    if (len <= MAX_ARGUMENTS_LENGTH) {
      return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
    }
  
    // Decode in chunks to avoid "call stack size exceeded".
    var res = ''
    var i = 0
    while (i < len) {
      res += String.fromCharCode.apply(
        String,
        codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
      )
    }
    return res
  }
  
  function asciiSlice (buf, start, end) {
    var ret = ''
    end = Math.min(buf.length, end)
  
    for (var i = start; i < end; ++i) {
      ret += String.fromCharCode(buf[i] & 0x7F)
    }
    return ret
  }
  
  function latin1Slice (buf, start, end) {
    var ret = ''
    end = Math.min(buf.length, end)
  
    for (var i = start; i < end; ++i) {
      ret += String.fromCharCode(buf[i])
    }
    return ret
  }
  
  function hexSlice (buf, start, end) {
    var len = buf.length
  
    if (!start || start < 0) start = 0
    if (!end || end < 0 || end > len) end = len
  
    var out = ''
    for (var i = start; i < end; ++i) {
      out += toHex(buf[i])
    }
    return out
  }
  
  function utf16leSlice (buf, start, end) {
    var bytes = buf.slice(start, end)
    var res = ''
    for (var i = 0; i < bytes.length; i += 2) {
      res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)
    }
    return res
  }
  
  Buffer.prototype.slice = function slice (start, end) {
    var len = this.length
    start = ~~start
    end = end === undefined ? len : ~~end
  
    if (start < 0) {
      start += len
      if (start < 0) start = 0
    } else if (start > len) {
      start = len
    }
  
    if (end < 0) {
      end += len
      if (end < 0) end = 0
    } else if (end > len) {
      end = len
    }
  
    if (end < start) end = start
  
    var newBuf
    if (Buffer.TYPED_ARRAY_SUPPORT) {
      newBuf = this.subarray(start, end)
      newBuf.__proto__ = Buffer.prototype
    } else {
      var sliceLen = end - start
      newBuf = new Buffer(sliceLen, undefined)
      for (var i = 0; i < sliceLen; ++i) {
        newBuf[i] = this[i + start]
      }
    }
  
    return newBuf
  }
  
  /*
   * Need to make sure that buffer isn't trying to write out of bounds.
   */
  function checkOffset (offset, ext, length) {
    if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
    if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
  }
  
  Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
    offset = offset | 0
    byteLength = byteLength | 0
    if (!noAssert) checkOffset(offset, byteLength, this.length)
  
    var val = this[offset]
    var mul = 1
    var i = 0
    while (++i < byteLength && (mul *= 0x100)) {
      val += this[offset + i] * mul
    }
  
    return val
  }
  
  Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
    offset = offset | 0
    byteLength = byteLength | 0
    if (!noAssert) {
      checkOffset(offset, byteLength, this.length)
    }
  
    var val = this[offset + --byteLength]
    var mul = 1
    while (byteLength > 0 && (mul *= 0x100)) {
      val += this[offset + --byteLength] * mul
    }
  
    return val
  }
  
  Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
    if (!noAssert) checkOffset(offset, 1, this.length)
    return this[offset]
  }
  
  Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
    if (!noAssert) checkOffset(offset, 2, this.length)
    return this[offset] | (this[offset + 1] << 8)
  }
  
  Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
    if (!noAssert) checkOffset(offset, 2, this.length)
    return (this[offset] << 8) | this[offset + 1]
  }
  
  Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
    if (!noAssert) checkOffset(offset, 4, this.length)
  
    return ((this[offset]) |
        (this[offset + 1] << 8) |
        (this[offset + 2] << 16)) +
        (this[offset + 3] * 0x1000000)
  }
  
  Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
    if (!noAssert) checkOffset(offset, 4, this.length)
  
    return (this[offset] * 0x1000000) +
      ((this[offset + 1] << 16) |
      (this[offset + 2] << 8) |
      this[offset + 3])
  }
  
  Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
    offset = offset | 0
    byteLength = byteLength | 0
    if (!noAssert) checkOffset(offset, byteLength, this.length)
  
    var val = this[offset]
    var mul = 1
    var i = 0
    while (++i < byteLength && (mul *= 0x100)) {
      val += this[offset + i] * mul
    }
    mul *= 0x80
  
    if (val >= mul) val -= Math.pow(2, 8 * byteLength)
  
    return val
  }
  
  Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
    offset = offset | 0
    byteLength = byteLength | 0
    if (!noAssert) checkOffset(offset, byteLength, this.length)
  
    var i = byteLength
    var mul = 1
    var val = this[offset + --i]
    while (i > 0 && (mul *= 0x100)) {
      val += this[offset + --i] * mul
    }
    mul *= 0x80
  
    if (val >= mul) val -= Math.pow(2, 8 * byteLength)
  
    return val
  }
  
  Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
    if (!noAssert) checkOffset(offset, 1, this.length)
    if (!(this[offset] & 0x80)) return (this[offset])
    return ((0xff - this[offset] + 1) * -1)
  }
  
  Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
    if (!noAssert) checkOffset(offset, 2, this.length)
    var val = this[offset] | (this[offset + 1] << 8)
    return (val & 0x8000) ? val | 0xFFFF0000 : val
  }
  
  Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
    if (!noAssert) checkOffset(offset, 2, this.length)
    var val = this[offset + 1] | (this[offset] << 8)
    return (val & 0x8000) ? val | 0xFFFF0000 : val
  }
  
  Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
    if (!noAssert) checkOffset(offset, 4, this.length)
  
    return (this[offset]) |
      (this[offset + 1] << 8) |
      (this[offset + 2] << 16) |
      (this[offset + 3] << 24)
  }
  
  Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
    if (!noAssert) checkOffset(offset, 4, this.length)
  
    return (this[offset] << 24) |
      (this[offset + 1] << 16) |
      (this[offset + 2] << 8) |
      (this[offset + 3])
  }
  
  Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
    if (!noAssert) checkOffset(offset, 4, this.length)
    return ieee754.read(this, offset, true, 23, 4)
  }
  
  Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
    if (!noAssert) checkOffset(offset, 4, this.length)
    return ieee754.read(this, offset, false, 23, 4)
  }
  
  Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
    if (!noAssert) checkOffset(offset, 8, this.length)
    return ieee754.read(this, offset, true, 52, 8)
  }
  
  Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
    if (!noAssert) checkOffset(offset, 8, this.length)
    return ieee754.read(this, offset, false, 52, 8)
  }
  
  function checkInt (buf, value, offset, ext, max, min) {
    if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
    if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
    if (offset + ext > buf.length) throw new RangeError('Index out of range')
  }
  
  Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
    value = +value
    offset = offset | 0
    byteLength = byteLength | 0
    if (!noAssert) {
      var maxBytes = Math.pow(2, 8 * byteLength) - 1
      checkInt(this, value, offset, byteLength, maxBytes, 0)
    }
  
    var mul = 1
    var i = 0
    this[offset] = value & 0xFF
    while (++i < byteLength && (mul *= 0x100)) {
      this[offset + i] = (value / mul) & 0xFF
    }
  
    return offset + byteLength
  }
  
  Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
    value = +value
    offset = offset | 0
    byteLength = byteLength | 0
    if (!noAssert) {
      var maxBytes = Math.pow(2, 8 * byteLength) - 1
      checkInt(this, value, offset, byteLength, maxBytes, 0)
    }
  
    var i = byteLength - 1
    var mul = 1
    this[offset + i] = value & 0xFF
    while (--i >= 0 && (mul *= 0x100)) {
      this[offset + i] = (value / mul) & 0xFF
    }
  
    return offset + byteLength
  }
  
  Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
    value = +value
    offset = offset | 0
    if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
    if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
    this[offset] = (value & 0xff)
    return offset + 1
  }
  
  function objectWriteUInt16 (buf, value, offset, littleEndian) {
    if (value < 0) value = 0xffff + value + 1
    for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; ++i) {
      buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
        (littleEndian ? i : 1 - i) * 8
    }
  }
  
  Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
    value = +value
    offset = offset | 0
    if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
    if (Buffer.TYPED_ARRAY_SUPPORT) {
      this[offset] = (value & 0xff)
      this[offset + 1] = (value >>> 8)
    } else {
      objectWriteUInt16(this, value, offset, true)
    }
    return offset + 2
  }
  
  Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
    value = +value
    offset = offset | 0
    if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
    if (Buffer.TYPED_ARRAY_SUPPORT) {
      this[offset] = (value >>> 8)
      this[offset + 1] = (value & 0xff)
    } else {
      objectWriteUInt16(this, value, offset, false)
    }
    return offset + 2
  }
  
  function objectWriteUInt32 (buf, value, offset, littleEndian) {
    if (value < 0) value = 0xffffffff + value + 1
    for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; ++i) {
      buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
    }
  }
  
  Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
    value = +value
    offset = offset | 0
    if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
    if (Buffer.TYPED_ARRAY_SUPPORT) {
      this[offset + 3] = (value >>> 24)
      this[offset + 2] = (value >>> 16)
      this[offset + 1] = (value >>> 8)
      this[offset] = (value & 0xff)
    } else {
      objectWriteUInt32(this, value, offset, true)
    }
    return offset + 4
  }
  
  Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
    value = +value
    offset = offset | 0
    if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
    if (Buffer.TYPED_ARRAY_SUPPORT) {
      this[offset] = (value >>> 24)
      this[offset + 1] = (value >>> 16)
      this[offset + 2] = (value >>> 8)
      this[offset + 3] = (value & 0xff)
    } else {
      objectWriteUInt32(this, value, offset, false)
    }
    return offset + 4
  }
  
  Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
    value = +value
    offset = offset | 0
    if (!noAssert) {
      var limit = Math.pow(2, 8 * byteLength - 1)
  
      checkInt(this, value, offset, byteLength, limit - 1, -limit)
    }
  
    var i = 0
    var mul = 1
    var sub = 0
    this[offset] = value & 0xFF
    while (++i < byteLength && (mul *= 0x100)) {
      if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
        sub = 1
      }
      this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
    }
  
    return offset + byteLength
  }
  
  Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
    value = +value
    offset = offset | 0
    if (!noAssert) {
      var limit = Math.pow(2, 8 * byteLength - 1)
  
      checkInt(this, value, offset, byteLength, limit - 1, -limit)
    }
  
    var i = byteLength - 1
    var mul = 1
    var sub = 0
    this[offset + i] = value & 0xFF
    while (--i >= 0 && (mul *= 0x100)) {
      if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
        sub = 1
      }
      this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
    }
  
    return offset + byteLength
  }
  
  Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
    value = +value
    offset = offset | 0
    if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
    if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
    if (value < 0) value = 0xff + value + 1
    this[offset] = (value & 0xff)
    return offset + 1
  }
  
  Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
    value = +value
    offset = offset | 0
    if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
    if (Buffer.TYPED_ARRAY_SUPPORT) {
      this[offset] = (value & 0xff)
      this[offset + 1] = (value >>> 8)
    } else {
      objectWriteUInt16(this, value, offset, true)
    }
    return offset + 2
  }
  
  Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
    value = +value
    offset = offset | 0
    if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
    if (Buffer.TYPED_ARRAY_SUPPORT) {
      this[offset] = (value >>> 8)
      this[offset + 1] = (value & 0xff)
    } else {
      objectWriteUInt16(this, value, offset, false)
    }
    return offset + 2
  }
  
  Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
    value = +value
    offset = offset | 0
    if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
    if (Buffer.TYPED_ARRAY_SUPPORT) {
      this[offset] = (value & 0xff)
      this[offset + 1] = (value >>> 8)
      this[offset + 2] = (value >>> 16)
      this[offset + 3] = (value >>> 24)
    } else {
      objectWriteUInt32(this, value, offset, true)
    }
    return offset + 4
  }
  
  Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
    value = +value
    offset = offset | 0
    if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
    if (value < 0) value = 0xffffffff + value + 1
    if (Buffer.TYPED_ARRAY_SUPPORT) {
      this[offset] = (value >>> 24)
      this[offset + 1] = (value >>> 16)
      this[offset + 2] = (value >>> 8)
      this[offset + 3] = (value & 0xff)
    } else {
      objectWriteUInt32(this, value, offset, false)
    }
    return offset + 4
  }
  
  function checkIEEE754 (buf, value, offset, ext, max, min) {
    if (offset + ext > buf.length) throw new RangeError('Index out of range')
    if (offset < 0) throw new RangeError('Index out of range')
  }
  
  function writeFloat (buf, value, offset, littleEndian, noAssert) {
    if (!noAssert) {
      checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
    }
    ieee754.write(buf, value, offset, littleEndian, 23, 4)
    return offset + 4
  }
  
  Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
    return writeFloat(this, value, offset, true, noAssert)
  }
  
  Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
    return writeFloat(this, value, offset, false, noAssert)
  }
  
  function writeDouble (buf, value, offset, littleEndian, noAssert) {
    if (!noAssert) {
      checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
    }
    ieee754.write(buf, value, offset, littleEndian, 52, 8)
    return offset + 8
  }
  
  Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
    return writeDouble(this, value, offset, true, noAssert)
  }
  
  Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
    return writeDouble(this, value, offset, false, noAssert)
  }
  
  // copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
  Buffer.prototype.copy = function copy (target, targetStart, start, end) {
    if (!start) start = 0
    if (!end && end !== 0) end = this.length
    if (targetStart >= target.length) targetStart = target.length
    if (!targetStart) targetStart = 0
    if (end > 0 && end < start) end = start
  
    // Copy 0 bytes; we're done
    if (end === start) return 0
    if (target.length === 0 || this.length === 0) return 0
  
    // Fatal error conditions
    if (targetStart < 0) {
      throw new RangeError('targetStart out of bounds')
    }
    if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
    if (end < 0) throw new RangeError('sourceEnd out of bounds')
  
    // Are we oob?
    if (end > this.length) end = this.length
    if (target.length - targetStart < end - start) {
      end = target.length - targetStart + start
    }
  
    var len = end - start
    var i
  
    if (this === target && start < targetStart && targetStart < end) {
      // descending copy from end
      for (i = len - 1; i >= 0; --i) {
        target[i + targetStart] = this[i + start]
      }
    } else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
      // ascending copy from start
      for (i = 0; i < len; ++i) {
        target[i + targetStart] = this[i + start]
      }
    } else {
      Uint8Array.prototype.set.call(
        target,
        this.subarray(start, start + len),
        targetStart
      )
    }
  
    return len
  }
  
  // Usage:
  //    buffer.fill(number[, offset[, end]])
  //    buffer.fill(buffer[, offset[, end]])
  //    buffer.fill(string[, offset[, end]][, encoding])
  Buffer.prototype.fill = function fill (val, start, end, encoding) {
    // Handle string cases:
    if (typeof val === 'string') {
      if (typeof start === 'string') {
        encoding = start
        start = 0
        end = this.length
      } else if (typeof end === 'string') {
        encoding = end
        end = this.length
      }
      if (val.length === 1) {
        var code = val.charCodeAt(0)
        if (code < 256) {
          val = code
        }
      }
      if (encoding !== undefined && typeof encoding !== 'string') {
        throw new TypeError('encoding must be a string')
      }
      if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
        throw new TypeError('Unknown encoding: ' + encoding)
      }
    } else if (typeof val === 'number') {
      val = val & 255
    }
  
    // Invalid ranges are not set to a default, so can range check early.
    if (start < 0 || this.length < start || this.length < end) {
      throw new RangeError('Out of range index')
    }
  
    if (end <= start) {
      return this
    }
  
    start = start >>> 0
    end = end === undefined ? this.length : end >>> 0
  
    if (!val) val = 0
  
    var i
    if (typeof val === 'number') {
      for (i = start; i < end; ++i) {
        this[i] = val
      }
    } else {
      var bytes = Buffer.isBuffer(val)
        ? val
        : utf8ToBytes(new Buffer(val, encoding).toString())
      var len = bytes.length
      for (i = 0; i < end - start; ++i) {
        this[i + start] = bytes[i % len]
      }
    }
  
    return this
  }
  
  // HELPER FUNCTIONS
  // ================
  
  var INVALID_BASE64_RE = /[^+\/0-9A-Za-z-_]/g
  
  function base64clean (str) {
    // Node strips out invalid characters like \n and \t from the string, base64-js does not
    str = stringtrim(str).replace(INVALID_BASE64_RE, '')
    // Node converts strings with length < 2 to ''
    if (str.length < 2) return ''
    // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
    while (str.length % 4 !== 0) {
      str = str + '='
    }
    return str
  }
  
  function stringtrim (str) {
    if (str.trim) return str.trim()
    return str.replace(/^\s+|\s+$/g, '')
  }
  
  function toHex (n) {
    if (n < 16) return '0' + n.toString(16)
    return n.toString(16)
  }
  
  function utf8ToBytes (string, units) {
    units = units || Infinity
    var codePoint
    var length = string.length
    var leadSurrogate = null
    var bytes = []
  
    for (var i = 0; i < length; ++i) {
      codePoint = string.charCodeAt(i)
  
      // is surrogate component
      if (codePoint > 0xD7FF && codePoint < 0xE000) {
        // last char was a lead
        if (!leadSurrogate) {
          // no lead yet
          if (codePoint > 0xDBFF) {
            // unexpected trail
            if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
            continue
          } else if (i + 1 === length) {
            // unpaired lead
            if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
            continue
          }
  
          // valid lead
          leadSurrogate = codePoint
  
          continue
        }
  
        // 2 leads in a row
        if (codePoint < 0xDC00) {
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
          leadSurrogate = codePoint
          continue
        }
  
        // valid surrogate pair
        codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
      } else if (leadSurrogate) {
        // valid bmp char, but last char was a lead
        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
      }
  
      leadSurrogate = null
  
      // encode utf8
      if (codePoint < 0x80) {
        if ((units -= 1) < 0) break
        bytes.push(codePoint)
      } else if (codePoint < 0x800) {
        if ((units -= 2) < 0) break
        bytes.push(
          codePoint >> 0x6 | 0xC0,
          codePoint & 0x3F | 0x80
        )
      } else if (codePoint < 0x10000) {
        if ((units -= 3) < 0) break
        bytes.push(
          codePoint >> 0xC | 0xE0,
          codePoint >> 0x6 & 0x3F | 0x80,
          codePoint & 0x3F | 0x80
        )
      } else if (codePoint < 0x110000) {
        if ((units -= 4) < 0) break
        bytes.push(
          codePoint >> 0x12 | 0xF0,
          codePoint >> 0xC & 0x3F | 0x80,
          codePoint >> 0x6 & 0x3F | 0x80,
          codePoint & 0x3F | 0x80
        )
      } else {
        throw new Error('Invalid code point')
      }
    }
  
    return bytes
  }
  
  function asciiToBytes (str) {
    var byteArray = []
    for (var i = 0; i < str.length; ++i) {
      // Node's code seems to be doing this and not & 0x7F..
      byteArray.push(str.charCodeAt(i) & 0xFF)
    }
    return byteArray
  }
  
  function utf16leToBytes (str, units) {
    var c, hi, lo
    var byteArray = []
    for (var i = 0; i < str.length; ++i) {
      if ((units -= 2) < 0) break
  
      c = str.charCodeAt(i)
      hi = c >> 8
      lo = c % 256
      byteArray.push(lo)
      byteArray.push(hi)
    }
  
    return byteArray
  }
  
  function base64ToBytes (str) {
    return base64.toByteArray(base64clean(str))
  }
  
  function blitBuffer (src, dst, offset, length) {
    for (var i = 0; i < length; ++i) {
      if ((i + offset >= dst.length) || (i >= src.length)) break
      dst[i + offset] = src[i]
    }
    return i
  }
  
  function isnan (val) {
    return val !== val // eslint-disable-line no-self-compare
  }
  
  }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
  },{"base64-js":39,"ieee754":50,"isarray":53}],45:[function(require,module,exports){
  (function (Buffer){
  // Copyright Joyent, Inc. and other Node contributors.
  //
  // Permission is hereby granted, free of charge, to any person obtaining a
  // copy of this software and associated documentation files (the
  // "Software"), to deal in the Software without restriction, including
  // without limitation the rights to use, copy, modify, merge, publish,
  // distribute, sublicense, and/or sell copies of the Software, and to permit
  // persons to whom the Software is furnished to do so, subject to the
  // following conditions:
  //
  // The above copyright notice and this permission notice shall be included
  // in all copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
  // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
  // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  // USE OR OTHER DEALINGS IN THE SOFTWARE.
  
  // NOTE: These type checking functions intentionally don't use `instanceof`
  // because it is fragile and can be easily faked with `Object.create()`.
  
  function isArray(arg) {
    if (Array.isArray) {
      return Array.isArray(arg);
    }
    return objectToString(arg) === '[object Array]';
  }
  exports.isArray = isArray;
  
  function isBoolean(arg) {
    return typeof arg === 'boolean';
  }
  exports.isBoolean = isBoolean;
  
  function isNull(arg) {
    return arg === null;
  }
  exports.isNull = isNull;
  
  function isNullOrUndefined(arg) {
    return arg == null;
  }
  exports.isNullOrUndefined = isNullOrUndefined;
  
  function isNumber(arg) {
    return typeof arg === 'number';
  }
  exports.isNumber = isNumber;
  
  function isString(arg) {
    return typeof arg === 'string';
  }
  exports.isString = isString;
  
  function isSymbol(arg) {
    return typeof arg === 'symbol';
  }
  exports.isSymbol = isSymbol;
  
  function isUndefined(arg) {
    return arg === void 0;
  }
  exports.isUndefined = isUndefined;
  
  function isRegExp(re) {
    return objectToString(re) === '[object RegExp]';
  }
  exports.isRegExp = isRegExp;
  
  function isObject(arg) {
    return typeof arg === 'object' && arg !== null;
  }
  exports.isObject = isObject;
  
  function isDate(d) {
    return objectToString(d) === '[object Date]';
  }
  exports.isDate = isDate;
  
  function isError(e) {
    return (objectToString(e) === '[object Error]' || e instanceof Error);
  }
  exports.isError = isError;
  
  function isFunction(arg) {
    return typeof arg === 'function';
  }
  exports.isFunction = isFunction;
  
  function isPrimitive(arg) {
    return arg === null ||
           typeof arg === 'boolean' ||
           typeof arg === 'number' ||
           typeof arg === 'string' ||
           typeof arg === 'symbol' ||  // ES6 symbol
           typeof arg === 'undefined';
  }
  exports.isPrimitive = isPrimitive;
  
  exports.isBuffer = Buffer.isBuffer;
  
  function objectToString(o) {
    return Object.prototype.toString.call(o);
  }
  
  }).call(this,{"isBuffer":require("../../is-buffer/index.js")})
  },{"../../is-buffer/index.js":52}],46:[function(require,module,exports){
  /* See LICENSE file for terms of use */
  
  /*
   * Text diff implementation.
   *
   * This library supports the following APIS:
   * JsDiff.diffChars: Character by character diff
   * JsDiff.diffWords: Word (as defined by \b regex) diff which ignores whitespace
   * JsDiff.diffLines: Line based diff
   *
   * JsDiff.diffCss: Diff targeted at CSS content
   *
   * These methods are based on the implementation proposed in
   * "An O(ND) Difference Algorithm and its Variations" (Myers, 1986).
   * http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.4.6927
   */
  (function(global, undefined) {
    var objectPrototypeToString = Object.prototype.toString;
  
    /*istanbul ignore next*/
    function map(arr, mapper, that) {
      if (Array.prototype.map) {
        return Array.prototype.map.call(arr, mapper, that);
      }
  
      var other = new Array(arr.length);
  
      for (var i = 0, n = arr.length; i < n; i++) {
        other[i] = mapper.call(that, arr[i], i, arr);
      }
      return other;
    }
    function clonePath(path) {
      return { newPos: path.newPos, components: path.components.slice(0) };
    }
    function removeEmpty(array) {
      var ret = [];
      for (var i = 0; i < array.length; i++) {
        if (array[i]) {
          ret.push(array[i]);
        }
      }
      return ret;
    }
    function escapeHTML(s) {
      var n = s;
      n = n.replace(/&/g, '&amp;');
      n = n.replace(/</g, '&lt;');
      n = n.replace(/>/g, '&gt;');
      n = n.replace(/"/g, '&quot;');
  
      return n;
    }
  
    // This function handles the presence of circular references by bailing out when encountering an
    // object that is already on the "stack" of items being processed.
    function canonicalize(obj, stack, replacementStack) {
      stack = stack || [];
      replacementStack = replacementStack || [];
  
      var i;
  
      for (i = 0; i < stack.length; i += 1) {
        if (stack[i] === obj) {
          return replacementStack[i];
        }
      }
  
      var canonicalizedObj;
  
      if ('[object Array]' === objectPrototypeToString.call(obj)) {
        stack.push(obj);
        canonicalizedObj = new Array(obj.length);
        replacementStack.push(canonicalizedObj);
        for (i = 0; i < obj.length; i += 1) {
          canonicalizedObj[i] = canonicalize(obj[i], stack, replacementStack);
        }
        stack.pop();
        replacementStack.pop();
      } else if (typeof obj === 'object' && obj !== null) {
        stack.push(obj);
        canonicalizedObj = {};
        replacementStack.push(canonicalizedObj);
        var sortedKeys = [],
            key;
        for (key in obj) {
          sortedKeys.push(key);
        }
        sortedKeys.sort();
        for (i = 0; i < sortedKeys.length; i += 1) {
          key = sortedKeys[i];
          canonicalizedObj[key] = canonicalize(obj[key], stack, replacementStack);
        }
        stack.pop();
        replacementStack.pop();
      } else {
        canonicalizedObj = obj;
      }
      return canonicalizedObj;
    }
  
    function buildValues(components, newString, oldString, useLongestToken) {
      var componentPos = 0,
          componentLen = components.length,
          newPos = 0,
          oldPos = 0;
  
      for (; componentPos < componentLen; componentPos++) {
        var component = components[componentPos];
        if (!component.removed) {
          if (!component.added && useLongestToken) {
            var value = newString.slice(newPos, newPos + component.count);
            value = map(value, function(value, i) {
              var oldValue = oldString[oldPos + i];
              return oldValue.length > value.length ? oldValue : value;
            });
  
            component.value = value.join('');
          } else {
            component.value = newString.slice(newPos, newPos + component.count).join('');
          }
          newPos += component.count;
  
          // Common case
          if (!component.added) {
            oldPos += component.count;
          }
        } else {
          component.value = oldString.slice(oldPos, oldPos + component.count).join('');
          oldPos += component.count;
  
          // Reverse add and remove so removes are output first to match common convention
          // The diffing algorithm is tied to add then remove output and this is the simplest
          // route to get the desired output with minimal overhead.
          if (componentPos && components[componentPos - 1].added) {
            var tmp = components[componentPos - 1];
            components[componentPos - 1] = components[componentPos];
            components[componentPos] = tmp;
          }
        }
      }
  
      return components;
    }
  
    function Diff(ignoreWhitespace) {
      this.ignoreWhitespace = ignoreWhitespace;
    }
    Diff.prototype = {
      diff: function(oldString, newString, callback) {
        var self = this;
  
        function done(value) {
          if (callback) {
            setTimeout(function() { callback(undefined, value); }, 0);
            return true;
          } else {
            return value;
          }
        }
  
        // Handle the identity case (this is due to unrolling editLength == 0
        if (newString === oldString) {
          return done([{ value: newString }]);
        }
        if (!newString) {
          return done([{ value: oldString, removed: true }]);
        }
        if (!oldString) {
          return done([{ value: newString, added: true }]);
        }
  
        newString = this.tokenize(newString);
        oldString = this.tokenize(oldString);
  
        var newLen = newString.length, oldLen = oldString.length;
        var editLength = 1;
        var maxEditLength = newLen + oldLen;
        var bestPath = [{ newPos: -1, components: [] }];
  
        // Seed editLength = 0, i.e. the content starts with the same values
        var oldPos = this.extractCommon(bestPath[0], newString, oldString, 0);
        if (bestPath[0].newPos + 1 >= newLen && oldPos + 1 >= oldLen) {
          // Identity per the equality and tokenizer
          return done([{value: newString.join('')}]);
        }
  
        // Main worker method. checks all permutations of a given edit length for acceptance.
        function execEditLength() {
          for (var diagonalPath = -1 * editLength; diagonalPath <= editLength; diagonalPath += 2) {
            var basePath;
            var addPath = bestPath[diagonalPath - 1],
                removePath = bestPath[diagonalPath + 1],
                oldPos = (removePath ? removePath.newPos : 0) - diagonalPath;
            if (addPath) {
              // No one else is going to attempt to use this value, clear it
              bestPath[diagonalPath - 1] = undefined;
            }
  
            var canAdd = addPath && addPath.newPos + 1 < newLen,
                canRemove = removePath && 0 <= oldPos && oldPos < oldLen;
            if (!canAdd && !canRemove) {
              // If this path is a terminal then prune
              bestPath[diagonalPath] = undefined;
              continue;
            }
  
            // Select the diagonal that we want to branch from. We select the prior
            // path whose position in the new string is the farthest from the origin
            // and does not pass the bounds of the diff graph
            if (!canAdd || (canRemove && addPath.newPos < removePath.newPos)) {
              basePath = clonePath(removePath);
              self.pushComponent(basePath.components, undefined, true);
            } else {
              basePath = addPath;   // No need to clone, we've pulled it from the list
              basePath.newPos++;
              self.pushComponent(basePath.components, true, undefined);
            }
  
            oldPos = self.extractCommon(basePath, newString, oldString, diagonalPath);
  
            // If we have hit the end of both strings, then we are done
            if (basePath.newPos + 1 >= newLen && oldPos + 1 >= oldLen) {
              return done(buildValues(basePath.components, newString, oldString, self.useLongestToken));
            } else {
              // Otherwise track this path as a potential candidate and continue.
              bestPath[diagonalPath] = basePath;
            }
          }
  
          editLength++;
        }
  
        // Performs the length of edit iteration. Is a bit fugly as this has to support the
        // sync and async mode which is never fun. Loops over execEditLength until a value
        // is produced.
        if (callback) {
          (function exec() {
            setTimeout(function() {
              // This should not happen, but we want to be safe.
              /*istanbul ignore next */
              if (editLength > maxEditLength) {
                return callback();
              }
  
              if (!execEditLength()) {
                exec();
              }
            }, 0);
          }());
        } else {
          while (editLength <= maxEditLength) {
            var ret = execEditLength();
            if (ret) {
              return ret;
            }
          }
        }
      },
  
      pushComponent: function(components, added, removed) {
        var last = components[components.length - 1];
        if (last && last.added === added && last.removed === removed) {
          // We need to clone here as the component clone operation is just
          // as shallow array clone
          components[components.length - 1] = {count: last.count + 1, added: added, removed: removed };
        } else {
          components.push({count: 1, added: added, removed: removed });
        }
      },
      extractCommon: function(basePath, newString, oldString, diagonalPath) {
        var newLen = newString.length,
            oldLen = oldString.length,
            newPos = basePath.newPos,
            oldPos = newPos - diagonalPath,
  
            commonCount = 0;
        while (newPos + 1 < newLen && oldPos + 1 < oldLen && this.equals(newString[newPos + 1], oldString[oldPos + 1])) {
          newPos++;
          oldPos++;
          commonCount++;
        }
  
        if (commonCount) {
          basePath.components.push({count: commonCount});
        }
  
        basePath.newPos = newPos;
        return oldPos;
      },
  
      equals: function(left, right) {
        var reWhitespace = /\S/;
        return left === right || (this.ignoreWhitespace && !reWhitespace.test(left) && !reWhitespace.test(right));
      },
      tokenize: function(value) {
        return value.split('');
      }
    };
  
    var CharDiff = new Diff();
  
    var WordDiff = new Diff(true);
    var WordWithSpaceDiff = new Diff();
    WordDiff.tokenize = WordWithSpaceDiff.tokenize = function(value) {
      return removeEmpty(value.split(/(\s+|\b)/));
    };
  
    var CssDiff = new Diff(true);
    CssDiff.tokenize = function(value) {
      return removeEmpty(value.split(/([{}:;,]|\s+)/));
    };
  
    var LineDiff = new Diff();
  
    var TrimmedLineDiff = new Diff();
    TrimmedLineDiff.ignoreTrim = true;
  
    LineDiff.tokenize = TrimmedLineDiff.tokenize = function(value) {
      var retLines = [],
          lines = value.split(/^/m);
      for (var i = 0; i < lines.length; i++) {
        var line = lines[i],
            lastLine = lines[i - 1],
            lastLineLastChar = lastLine && lastLine[lastLine.length - 1];
  
        // Merge lines that may contain windows new lines
        if (line === '\n' && lastLineLastChar === '\r') {
            retLines[retLines.length - 1] = retLines[retLines.length - 1].slice(0, -1) + '\r\n';
        } else {
          if (this.ignoreTrim) {
            line = line.trim();
            // add a newline unless this is the last line.
            if (i < lines.length - 1) {
              line += '\n';
            }
          }
          retLines.push(line);
        }
      }
  
      return retLines;
    };
  
    var PatchDiff = new Diff();
    PatchDiff.tokenize = function(value) {
      var ret = [],
          linesAndNewlines = value.split(/(\n|\r\n)/);
  
      // Ignore the final empty token that occurs if the string ends with a new line
      if (!linesAndNewlines[linesAndNewlines.length - 1]) {
        linesAndNewlines.pop();
      }
  
      // Merge the content and line separators into single tokens
      for (var i = 0; i < linesAndNewlines.length; i++) {
        var line = linesAndNewlines[i];
  
        if (i % 2) {
          ret[ret.length - 1] += line;
        } else {
          ret.push(line);
        }
      }
      return ret;
    };
  
    var SentenceDiff = new Diff();
    SentenceDiff.tokenize = function(value) {
      return removeEmpty(value.split(/(\S.+?[.!?])(?=\s+|$)/));
    };
  
    var JsonDiff = new Diff();
    // Discriminate between two lines of pretty-printed, serialized JSON where one of them has a
    // dangling comma and the other doesn't. Turns out including the dangling comma yields the nicest output:
    JsonDiff.useLongestToken = true;
    JsonDiff.tokenize = LineDiff.tokenize;
    JsonDiff.equals = function(left, right) {
      return LineDiff.equals(left.replace(/,([\r\n])/g, '$1'), right.replace(/,([\r\n])/g, '$1'));
    };
  
    var JsDiff = {
      Diff: Diff,
  
      diffChars: function(oldStr, newStr, callback) { return CharDiff.diff(oldStr, newStr, callback); },
      diffWords: function(oldStr, newStr, callback) { return WordDiff.diff(oldStr, newStr, callback); },
      diffWordsWithSpace: function(oldStr, newStr, callback) { return WordWithSpaceDiff.diff(oldStr, newStr, callback); },
      diffLines: function(oldStr, newStr, callback) { return LineDiff.diff(oldStr, newStr, callback); },
      diffTrimmedLines: function(oldStr, newStr, callback) { return TrimmedLineDiff.diff(oldStr, newStr, callback); },
  
      diffSentences: function(oldStr, newStr, callback) { return SentenceDiff.diff(oldStr, newStr, callback); },
  
      diffCss: function(oldStr, newStr, callback) { return CssDiff.diff(oldStr, newStr, callback); },
      diffJson: function(oldObj, newObj, callback) {
        return JsonDiff.diff(
          typeof oldObj === 'string' ? oldObj : JSON.stringify(canonicalize(oldObj), undefined, '  '),
          typeof newObj === 'string' ? newObj : JSON.stringify(canonicalize(newObj), undefined, '  '),
          callback
        );
      },
  
      createTwoFilesPatch: function(oldFileName, newFileName, oldStr, newStr, oldHeader, newHeader) {
        var ret = [];
  
        if (oldFileName == newFileName) {
          ret.push('Index: ' + oldFileName);
        }
        ret.push('===================================================================');
        ret.push('--- ' + oldFileName + (typeof oldHeader === 'undefined' ? '' : '\t' + oldHeader));
        ret.push('+++ ' + newFileName + (typeof newHeader === 'undefined' ? '' : '\t' + newHeader));
  
        var diff = PatchDiff.diff(oldStr, newStr);
        diff.push({value: '', lines: []});   // Append an empty value to make cleanup easier
  
        // Formats a given set of lines for printing as context lines in a patch
        function contextLines(lines) {
          return map(lines, function(entry) { return ' ' + entry; });
        }
  
        // Outputs the no newline at end of file warning if needed
        function eofNL(curRange, i, current) {
          var last = diff[diff.length - 2],
              isLast = i === diff.length - 2,
              isLastOfType = i === diff.length - 3 && current.added !== last.added;
  
          // Figure out if this is the last line for the given file and missing NL
          if (!(/\n$/.test(current.value)) && (isLast || isLastOfType)) {
            curRange.push('\\ No newline at end of file');
          }
        }
  
        var oldRangeStart = 0, newRangeStart = 0, curRange = [],
            oldLine = 1, newLine = 1;
        for (var i = 0; i < diff.length; i++) {
          var current = diff[i],
              lines = current.lines || current.value.replace(/\n$/, '').split('\n');
          current.lines = lines;
  
          if (current.added || current.removed) {
            // If we have previous context, start with that
            if (!oldRangeStart) {
              var prev = diff[i - 1];
              oldRangeStart = oldLine;
              newRangeStart = newLine;
  
              if (prev) {
                curRange = contextLines(prev.lines.slice(-4));
                oldRangeStart -= curRange.length;
                newRangeStart -= curRange.length;
              }
            }
  
            // Output our changes
            curRange.push.apply(curRange, map(lines, function(entry) {
              return (current.added ? '+' : '-') + entry;
            }));
            eofNL(curRange, i, current);
  
            // Track the updated file position
            if (current.added) {
              newLine += lines.length;
            } else {
              oldLine += lines.length;
            }
          } else {
            // Identical context lines. Track line changes
            if (oldRangeStart) {
              // Close out any changes that have been output (or join overlapping)
              if (lines.length <= 8 && i < diff.length - 2) {
                // Overlapping
                curRange.push.apply(curRange, contextLines(lines));
              } else {
                // end the range and output
                var contextSize = Math.min(lines.length, 4);
                ret.push(
                    '@@ -' + oldRangeStart + ',' + (oldLine - oldRangeStart + contextSize)
                    + ' +' + newRangeStart + ',' + (newLine - newRangeStart + contextSize)
                    + ' @@');
                ret.push.apply(ret, curRange);
                ret.push.apply(ret, contextLines(lines.slice(0, contextSize)));
                if (lines.length <= 4) {
                  eofNL(ret, i, current);
                }
  
                oldRangeStart = 0;
                newRangeStart = 0;
                curRange = [];
              }
            }
            oldLine += lines.length;
            newLine += lines.length;
          }
        }
  
        return ret.join('\n') + '\n';
      },
  
      createPatch: function(fileName, oldStr, newStr, oldHeader, newHeader) {
        return JsDiff.createTwoFilesPatch(fileName, fileName, oldStr, newStr, oldHeader, newHeader);
      },
  
      applyPatch: function(oldStr, uniDiff) {
        var diffstr = uniDiff.split('\n'),
            hunks = [],
            i = 0,
            remEOFNL = false,
            addEOFNL = false;
  
        // Skip to the first change hunk
        while (i < diffstr.length && !(/^@@/.test(diffstr[i]))) {
          i++;
        }
  
        // Parse the unified diff
        for (; i < diffstr.length; i++) {
          if (diffstr[i][0] === '@') {
            var chnukHeader = diffstr[i].split(/@@ -(\d+),(\d+) \+(\d+),(\d+) @@/);
            hunks.unshift({
              start: chnukHeader[3],
              oldlength: +chnukHeader[2],
              removed: [],
              newlength: chnukHeader[4],
              added: []
            });
          } else if (diffstr[i][0] === '+') {
            hunks[0].added.push(diffstr[i].substr(1));
          } else if (diffstr[i][0] === '-') {
            hunks[0].removed.push(diffstr[i].substr(1));
          } else if (diffstr[i][0] === ' ') {
            hunks[0].added.push(diffstr[i].substr(1));
            hunks[0].removed.push(diffstr[i].substr(1));
          } else if (diffstr[i][0] === '\\') {
            if (diffstr[i - 1][0] === '+') {
              remEOFNL = true;
            } else if (diffstr[i - 1][0] === '-') {
              addEOFNL = true;
            }
          }
        }
  
        // Apply the diff to the input
        var lines = oldStr.split('\n');
        for (i = hunks.length - 1; i >= 0; i--) {
          var hunk = hunks[i];
          // Sanity check the input string. Bail if we don't match.
          for (var j = 0; j < hunk.oldlength; j++) {
            if (lines[hunk.start - 1 + j] !== hunk.removed[j]) {
              return false;
            }
          }
          Array.prototype.splice.apply(lines, [hunk.start - 1, hunk.oldlength].concat(hunk.added));
        }
  
        // Handle EOFNL insertion/removal
        if (remEOFNL) {
          while (!lines[lines.length - 1]) {
            lines.pop();
          }
        } else if (addEOFNL) {
          lines.push('');
        }
        return lines.join('\n');
      },
  
      convertChangesToXML: function(changes) {
        var ret = [];
        for (var i = 0; i < changes.length; i++) {
          var change = changes[i];
          if (change.added) {
            ret.push('<ins>');
          } else if (change.removed) {
            ret.push('<del>');
          }
  
          ret.push(escapeHTML(change.value));
  
          if (change.added) {
            ret.push('</ins>');
          } else if (change.removed) {
            ret.push('</del>');
          }
        }
        return ret.join('');
      },
  
      // See: http://code.google.com/p/google-diff-match-patch/wiki/API
      convertChangesToDMP: function(changes) {
        var ret = [],
            change,
            operation;
        for (var i = 0; i < changes.length; i++) {
          change = changes[i];
          if (change.added) {
            operation = 1;
          } else if (change.removed) {
            operation = -1;
          } else {
            operation = 0;
          }
  
          ret.push([operation, change.value]);
        }
        return ret;
      },
  
      canonicalize: canonicalize
    };
  
    /*istanbul ignore next */
    /*global module */
    if (typeof module !== 'undefined' && module.exports) {
      module.exports = JsDiff;
    } else if (false) {
      /*global define */
      define([], function() { return JsDiff; });
    } else if (typeof global.JsDiff === 'undefined') {
      global.JsDiff = JsDiff;
    }
  }(this));
  
  },{}],47:[function(require,module,exports){
  'use strict';
  
  var matchOperatorsRe = /[|\\{}()[\]^$+*?.]/g;
  
  module.exports = function (str) {
  	if (typeof str !== 'string') {
  		throw new TypeError('Expected a string');
  	}
  
  	return str.replace(matchOperatorsRe, '\\$&');
  };
  
  },{}],48:[function(require,module,exports){
  // Copyright Joyent, Inc. and other Node contributors.
  //
  // Permission is hereby granted, free of charge, to any person obtaining a
  // copy of this software and associated documentation files (the
  // "Software"), to deal in the Software without restriction, including
  // without limitation the rights to use, copy, modify, merge, publish,
  // distribute, sublicense, and/or sell copies of the Software, and to permit
  // persons to whom the Software is furnished to do so, subject to the
  // following conditions:
  //
  // The above copyright notice and this permission notice shall be included
  // in all copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
  // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
  // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  // USE OR OTHER DEALINGS IN THE SOFTWARE.
  
  function EventEmitter() {
    this._events = this._events || {};
    this._maxListeners = this._maxListeners || undefined;
  }
  module.exports = EventEmitter;
  
  // Backwards-compat with node 0.10.x
  EventEmitter.EventEmitter = EventEmitter;
  
  EventEmitter.prototype._events = undefined;
  EventEmitter.prototype._maxListeners = undefined;
  
  // By default EventEmitters will print a warning if more than 10 listeners are
  // added to it. This is a useful default which helps finding memory leaks.
  EventEmitter.defaultMaxListeners = 10;
  
  // Obviously not all Emitters should be limited to 10. This function allows
  // that to be increased. Set to zero for unlimited.
  EventEmitter.prototype.setMaxListeners = function(n) {
    if (!isNumber(n) || n < 0 || isNaN(n))
      throw TypeError('n must be a positive number');
    this._maxListeners = n;
    return this;
  };
  
  EventEmitter.prototype.emit = function(type) {
    var er, handler, len, args, i, listeners;
  
    if (!this._events)
      this._events = {};
  
    // If there is no 'error' event listener then throw.
    if (type === 'error') {
      if (!this._events.error ||
          (isObject(this._events.error) && !this._events.error.length)) {
        er = arguments[1];
        if (er instanceof Error) {
          throw er; // Unhandled 'error' event
        } else {
          // At least give some kind of context to the user
          var err = new Error('Uncaught, unspecified "error" event. (' + er + ')');
          err.context = er;
          throw err;
        }
      }
    }
  
    handler = this._events[type];
  
    if (isUndefined(handler))
      return false;
  
    if (isFunction(handler)) {
      switch (arguments.length) {
        // fast cases
        case 1:
          handler.call(this);
          break;
        case 2:
          handler.call(this, arguments[1]);
          break;
        case 3:
          handler.call(this, arguments[1], arguments[2]);
          break;
        // slower
        default:
          args = Array.prototype.slice.call(arguments, 1);
          handler.apply(this, args);
      }
    } else if (isObject(handler)) {
      args = Array.prototype.slice.call(arguments, 1);
      listeners = handler.slice();
      len = listeners.length;
      for (i = 0; i < len; i++)
        listeners[i].apply(this, args);
    }
  
    return true;
  };
  
  EventEmitter.prototype.addListener = function(type, listener) {
    var m;
  
    if (!isFunction(listener))
      throw TypeError('listener must be a function');
  
    if (!this._events)
      this._events = {};
  
    // To avoid recursion in the case that type === "newListener"! Before
    // adding it to the listeners, first emit "newListener".
    if (this._events.newListener)
      this.emit('newListener', type,
                isFunction(listener.listener) ?
                listener.listener : listener);
  
    if (!this._events[type])
      // Optimize the case of one listener. Don't need the extra array object.
      this._events[type] = listener;
    else if (isObject(this._events[type]))
      // If we've already got an array, just append.
      this._events[type].push(listener);
    else
      // Adding the second element, need to change to array.
      this._events[type] = [this._events[type], listener];
  
    // Check for listener leak
    if (isObject(this._events[type]) && !this._events[type].warned) {
      if (!isUndefined(this._maxListeners)) {
        m = this._maxListeners;
      } else {
        m = EventEmitter.defaultMaxListeners;
      }
  
      if (m && m > 0 && this._events[type].length > m) {
        this._events[type].warned = true;
        console.error('(node) warning: possible EventEmitter memory ' +
                      'leak detected. %d listeners added. ' +
                      'Use emitter.setMaxListeners() to increase limit.',
                      this._events[type].length);
        if (typeof console.trace === 'function') {
          // not supported in IE 10
          console.trace();
        }
      }
    }
  
    return this;
  };
  
  EventEmitter.prototype.on = EventEmitter.prototype.addListener;
  
  EventEmitter.prototype.once = function(type, listener) {
    if (!isFunction(listener))
      throw TypeError('listener must be a function');
  
    var fired = false;
  
    function g() {
      this.removeListener(type, g);
  
      if (!fired) {
        fired = true;
        listener.apply(this, arguments);
      }
    }
  
    g.listener = listener;
    this.on(type, g);
  
    return this;
  };
  
  // emits a 'removeListener' event iff the listener was removed
  EventEmitter.prototype.removeListener = function(type, listener) {
    var list, position, length, i;
  
    if (!isFunction(listener))
      throw TypeError('listener must be a function');
  
    if (!this._events || !this._events[type])
      return this;
  
    list = this._events[type];
    length = list.length;
    position = -1;
  
    if (list === listener ||
        (isFunction(list.listener) && list.listener === listener)) {
      delete this._events[type];
      if (this._events.removeListener)
        this.emit('removeListener', type, listener);
  
    } else if (isObject(list)) {
      for (i = length; i-- > 0;) {
        if (list[i] === listener ||
            (list[i].listener && list[i].listener === listener)) {
          position = i;
          break;
        }
      }
  
      if (position < 0)
        return this;
  
      if (list.length === 1) {
        list.length = 0;
        delete this._events[type];
      } else {
        list.splice(position, 1);
      }
  
      if (this._events.removeListener)
        this.emit('removeListener', type, listener);
    }
  
    return this;
  };
  
  EventEmitter.prototype.removeAllListeners = function(type) {
    var key, listeners;
  
    if (!this._events)
      return this;
  
    // not listening for removeListener, no need to emit
    if (!this._events.removeListener) {
      if (arguments.length === 0)
        this._events = {};
      else if (this._events[type])
        delete this._events[type];
      return this;
    }
  
    // emit removeListener for all listeners on all events
    if (arguments.length === 0) {
      for (key in this._events) {
        if (key === 'removeListener') continue;
        this.removeAllListeners(key);
      }
      this.removeAllListeners('removeListener');
      this._events = {};
      return this;
    }
  
    listeners = this._events[type];
  
    if (isFunction(listeners)) {
      this.removeListener(type, listeners);
    } else if (listeners) {
      // LIFO order
      while (listeners.length)
        this.removeListener(type, listeners[listeners.length - 1]);
    }
    delete this._events[type];
  
    return this;
  };
  
  EventEmitter.prototype.listeners = function(type) {
    var ret;
    if (!this._events || !this._events[type])
      ret = [];
    else if (isFunction(this._events[type]))
      ret = [this._events[type]];
    else
      ret = this._events[type].slice();
    return ret;
  };
  
  EventEmitter.prototype.listenerCount = function(type) {
    if (this._events) {
      var evlistener = this._events[type];
  
      if (isFunction(evlistener))
        return 1;
      else if (evlistener)
        return evlistener.length;
    }
    return 0;
  };
  
  EventEmitter.listenerCount = function(emitter, type) {
    return emitter.listenerCount(type);
  };
  
  function isFunction(arg) {
    return typeof arg === 'function';
  }
  
  function isNumber(arg) {
    return typeof arg === 'number';
  }
  
  function isObject(arg) {
    return typeof arg === 'object' && arg !== null;
  }
  
  function isUndefined(arg) {
    return arg === void 0;
  }
  
  },{}],49:[function(require,module,exports){
  (function (process){
  // Growl - Copyright TJ Holowaychuk <tj@vision-media.ca> (MIT Licensed)
  
  /**
   * Module dependencies.
   */
  
  var exec = require('child_process').exec
    , fs = require('fs')
    , path = require('path')
    , exists = fs.existsSync || path.existsSync
    , os = require('os')
    , quote = JSON.stringify
    , cmd;
  
  function which(name) {
    var paths = process.env.PATH.split(':');
    var loc;
  
    for (var i = 0, len = paths.length; i < len; ++i) {
      loc = path.join(paths[i], name);
      if (exists(loc)) return loc;
    }
  }
  
  switch(os.type()) {
    case 'Darwin':
      if (which('terminal-notifier')) {
        cmd = {
            type: "Darwin-NotificationCenter"
          , pkg: "terminal-notifier"
          , msg: '-message'
          , title: '-title'
          , subtitle: '-subtitle'
          , icon: '-appIcon'
          , sound:  '-sound'
          , url: '-open'
          , priority: {
                cmd: '-execute'
              , range: []
            }
        };
      } else {
        cmd = {
            type: "Darwin-Growl"
          , pkg: "growlnotify"
          , msg: '-m'
          , sticky: '--sticky'
          , priority: {
                cmd: '--priority'
              , range: [
                  -2
                , -1
                , 0
                , 1
                , 2
                , "Very Low"
                , "Moderate"
                , "Normal"
                , "High"
                , "Emergency"
              ]
            }
        };
      }
      break;
    case 'Linux':
      if (which('growl')) {
        cmd = {
            type: "Linux-Growl"
          , pkg: "growl"
          , msg: '-m'
          , title: '-title'
          , subtitle: '-subtitle'
          , host: {
              cmd: '-H'
            , hostname: '192.168.33.1'
          }
        };
      } else {
        cmd = {
            type: "Linux"
          , pkg: "notify-send"
          , msg: ''
          , sticky: '-t 0'
          , icon: '-i'
          , priority: {
              cmd: '-u'
            , range: [
                "low"
              , "normal"
              , "critical"
            ]
          }
        };
      }
      break;
    case 'Windows_NT':
      cmd = {
          type: "Windows"
        , pkg: "growlnotify"
        , msg: ''
        , sticky: '/s:true'
        , title: '/t:'
        , icon: '/i:'
        , url: '/cu:'
        , priority: {
              cmd: '/p:'
            , range: [
                -2
              , -1
              , 0
              , 1
              , 2
            ]
          }
      };
      break;
  }
  
  /**
   * Expose `growl`.
   */
  
  exports = module.exports = growl;
  
  /**
   * Node-growl version.
   */
  
  exports.version = '1.4.1'
  
  /**
   * Send growl notification _msg_ with _options_.
   *
   * Options:
   *
   *  - title   Notification title
   *  - sticky  Make the notification stick (defaults to false)
   *  - priority  Specify an int or named key (default is 0)
   *  - name    Application name (defaults to growlnotify)
   *  - sound   Sound efect ( in OSx defined in preferences -> sound -> effects) * works only in OSX > 10.8x
   *  - image
   *    - path to an icon sets --iconpath
   *    - path to an image sets --image
   *    - capitalized word sets --appIcon
   *    - filename uses extname as --icon
   *    - otherwise treated as --icon
   *
   * Examples:
   *
   *   growl('New email')
   *   growl('5 new emails', { title: 'Thunderbird' })
   *   growl('5 new emails', { title: 'Thunderbird', sound: 'Purr' })
   *   growl('Email sent', function(){
   *     // ... notification sent
   *   })
   *
   * @param {string} msg
   * @param {object} options
   * @param {function} fn
   * @api public
   */
  
  function growl(msg, options, fn) {
    var image
      , args
      , options = options || {}
      , fn = fn || function(){};
  
    if (options.exec) {
      cmd = {
          type: "Custom"
        , pkg: options.exec
        , range: []
      };
    }
  
    // noop
    if (!cmd) return fn(new Error('growl not supported on this platform'));
    args = [cmd.pkg];
  
    // image
    if (image = options.image) {
      switch(cmd.type) {
        case 'Darwin-Growl':
          var flag, ext = path.extname(image).substr(1)
          flag = flag || ext == 'icns' && 'iconpath'
          flag = flag || /^[A-Z]/.test(image) && 'appIcon'
          flag = flag || /^png|gif|jpe?g$/.test(ext) && 'image'
          flag = flag || ext && (image = ext) && 'icon'
          flag = flag || 'icon'
          args.push('--' + flag, quote(image))
          break;
        case 'Darwin-NotificationCenter':
          args.push(cmd.icon, quote(image));
          break;
        case 'Linux':
          args.push(cmd.icon, quote(image));
          // libnotify defaults to sticky, set a hint for transient notifications
          if (!options.sticky) args.push('--hint=int:transient:1');
          break;
        case 'Windows':
          args.push(cmd.icon + quote(image));
          break;
      }
    }
  
    // sticky
    if (options.sticky) args.push(cmd.sticky);
  
    // priority
    if (options.priority) {
      var priority = options.priority + '';
      var checkindexOf = cmd.priority.range.indexOf(priority);
      if (~cmd.priority.range.indexOf(priority)) {
        args.push(cmd.priority, options.priority);
      }
    }
  
    //sound
    if(options.sound && cmd.type === 'Darwin-NotificationCenter'){
      args.push(cmd.sound, options.sound)
    }
  
    // name
    if (options.name && cmd.type === "Darwin-Growl") {
      args.push('--name', options.name);
    }
  
    switch(cmd.type) {
      case 'Darwin-Growl':
        args.push(cmd.msg);
        args.push(quote(msg).replace(/\\n/g, '\n'));
        if (options.title) args.push(quote(options.title));
        break;
      case 'Darwin-NotificationCenter':
        args.push(cmd.msg);
        var stringifiedMsg = quote(msg);
        var escapedMsg = stringifiedMsg.replace(/\\n/g, '\n');
        args.push(escapedMsg);
        if (options.title) {
          args.push(cmd.title);
          args.push(quote(options.title));
        }
        if (options.subtitle) {
          args.push(cmd.subtitle);
          args.push(quote(options.subtitle));
        }
        if (options.url) {
          args.push(cmd.url);
          args.push(quote(options.url));
        }
        break;
      case 'Linux-Growl':
        args.push(cmd.msg);
        args.push(quote(msg).replace(/\\n/g, '\n'));
        if (options.title) args.push(quote(options.title));
        if (cmd.host) {
          args.push(cmd.host.cmd, cmd.host.hostname)
        }
        break;
      case 'Linux':
        if (options.title) {
          args.push(quote(options.title));
          args.push(cmd.msg);
          args.push(quote(msg).replace(/\\n/g, '\n'));
        } else {
          args.push(quote(msg).replace(/\\n/g, '\n'));
        }
        break;
      case 'Windows':
        args.push(quote(msg).replace(/\\n/g, '\n'));
        if (options.title) args.push(cmd.title + quote(options.title));
        if (options.url) args.push(cmd.url + quote(options.url));
        break;
      case 'Custom':
        args[0] = (function(origCommand) {
          var message = options.title
            ? options.title + ': ' + msg
            : msg;
          var command = origCommand.replace(/(^|[^%])%s/g, '$1' + quote(message));
          if (command === origCommand) args.push(quote(message));
          return command;
        })(args[0]);
        break;
    }
  
    // execute
    exec(args.join(' '), fn);
  };
  
  }).call(this,require('_process'))
  },{"_process":67,"child_process":42,"fs":42,"os":65,"path":42}],50:[function(require,module,exports){
  exports.read = function (buffer, offset, isLE, mLen, nBytes) {
    var e, m
    var eLen = nBytes * 8 - mLen - 1
    var eMax = (1 << eLen) - 1
    var eBias = eMax >> 1
    var nBits = -7
    var i = isLE ? (nBytes - 1) : 0
    var d = isLE ? -1 : 1
    var s = buffer[offset + i]
  
    i += d
  
    e = s & ((1 << (-nBits)) - 1)
    s >>= (-nBits)
    nBits += eLen
    for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}
  
    m = e & ((1 << (-nBits)) - 1)
    e >>= (-nBits)
    nBits += mLen
    for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}
  
    if (e === 0) {
      e = 1 - eBias
    } else if (e === eMax) {
      return m ? NaN : ((s ? -1 : 1) * Infinity)
    } else {
      m = m + Math.pow(2, mLen)
      e = e - eBias
    }
    return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
  }
  
  exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
    var e, m, c
    var eLen = nBytes * 8 - mLen - 1
    var eMax = (1 << eLen) - 1
    var eBias = eMax >> 1
    var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
    var i = isLE ? 0 : (nBytes - 1)
    var d = isLE ? 1 : -1
    var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
  
    value = Math.abs(value)
  
    if (isNaN(value) || value === Infinity) {
      m = isNaN(value) ? 1 : 0
      e = eMax
    } else {
      e = Math.floor(Math.log(value) / Math.LN2)
      if (value * (c = Math.pow(2, -e)) < 1) {
        e--
        c *= 2
      }
      if (e + eBias >= 1) {
        value += rt / c
      } else {
        value += rt * Math.pow(2, 1 - eBias)
      }
      if (value * c >= 2) {
        e++
        c /= 2
      }
  
      if (e + eBias >= eMax) {
        m = 0
        e = eMax
      } else if (e + eBias >= 1) {
        m = (value * c - 1) * Math.pow(2, mLen)
        e = e + eBias
      } else {
        m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
        e = 0
      }
    }
  
    for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
  
    e = (e << mLen) | m
    eLen += mLen
    for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
  
    buffer[offset + i - d] |= s * 128
  }
  
  },{}],51:[function(require,module,exports){
  if (typeof Object.create === 'function') {
    // implementation from standard node.js 'util' module
    module.exports = function inherits(ctor, superCtor) {
      ctor.super_ = superCtor
      ctor.prototype = Object.create(superCtor.prototype, {
        constructor: {
          value: ctor,
          enumerable: false,
          writable: true,
          configurable: true
        }
      });
    };
  } else {
    // old school shim for old browsers
    module.exports = function inherits(ctor, superCtor) {
      ctor.super_ = superCtor
      var TempCtor = function () {}
      TempCtor.prototype = superCtor.prototype
      ctor.prototype = new TempCtor()
      ctor.prototype.constructor = ctor
    }
  }
  
  },{}],52:[function(require,module,exports){
  /*!
   * Determine if an object is a Buffer
   *
   * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
   * @license  MIT
   */
  
  // The _isBuffer check is for Safari 5-7 support, because it's missing
  // Object.prototype.constructor. Remove this eventually
  module.exports = function (obj) {
    return obj != null && (isBuffer(obj) || isSlowBuffer(obj) || !!obj._isBuffer)
  }
  
  function isBuffer (obj) {
    return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj)
  }
  
  // For Node v0.10 support. Remove this eventually.
  function isSlowBuffer (obj) {
    return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0))
  }
  
  },{}],53:[function(require,module,exports){
  var toString = {}.toString;
  
  module.exports = Array.isArray || function (arr) {
    return toString.call(arr) == '[object Array]';
  };
  
  },{}],54:[function(require,module,exports){
  (function (global){
  /*! JSON v3.3.2 | http://bestiejs.github.io/json3 | Copyright 2012-2014, Kit Cambridge | http://kit.mit-license.org */
  ;(function () {
    // Detect the `define` function exposed by asynchronous module loaders. The
    // strict `define` check is necessary for compatibility with `r.js`.
    var isLoader = false;
  
    // A set of types used to distinguish objects from primitives.
    var objectTypes = {
      "function": true,
      "object": true
    };
  
    // Detect the `exports` object exposed by CommonJS implementations.
    var freeExports = objectTypes[typeof exports] && exports && !exports.nodeType && exports;
  
    // Use the `global` object exposed by Node (including Browserify via
    // `insert-module-globals`), Narwhal, and Ringo as the default context,
    // and the `window` object in browsers. Rhino exports a `global` function
    // instead.
    var root = objectTypes[typeof window] && window || this,
        freeGlobal = freeExports && objectTypes[typeof module] && module && !module.nodeType && typeof global == "object" && global;
  
    if (freeGlobal && (freeGlobal["global"] === freeGlobal || freeGlobal["window"] === freeGlobal || freeGlobal["self"] === freeGlobal)) {
      root = freeGlobal;
    }
  
    // Public: Initializes JSON 3 using the given `context` object, attaching the
    // `stringify` and `parse` functions to the specified `exports` object.
    function runInContext(context, exports) {
      context || (context = root["Object"]());
      exports || (exports = root["Object"]());
  
      // Native constructor aliases.
      var Number = context["Number"] || root["Number"],
          String = context["String"] || root["String"],
          Object = context["Object"] || root["Object"],
          Date = context["Date"] || root["Date"],
          SyntaxError = context["SyntaxError"] || root["SyntaxError"],
          TypeError = context["TypeError"] || root["TypeError"],
          Math = context["Math"] || root["Math"],
          nativeJSON = context["JSON"] || root["JSON"];
  
      // Delegate to the native `stringify` and `parse` implementations.
      if (typeof nativeJSON == "object" && nativeJSON) {
        exports.stringify = nativeJSON.stringify;
        exports.parse = nativeJSON.parse;
      }
  
      // Convenience aliases.
      var objectProto = Object.prototype,
          getClass = objectProto.toString,
          isProperty, forEach, undef;
  
      // Test the `Date#getUTC*` methods. Based on work by @Yaffle.
      var isExtended = new Date(-3509827334573292);
      try {
        // The `getUTCFullYear`, `Month`, and `Date` methods return nonsensical
        // results for certain dates in Opera >= 10.53.
        isExtended = isExtended.getUTCFullYear() == -109252 && isExtended.getUTCMonth() === 0 && isExtended.getUTCDate() === 1 &&
          // Safari < 2.0.2 stores the internal millisecond time value correctly,
          // but clips the values returned by the date methods to the range of
          // signed 32-bit integers ([-2 ** 31, 2 ** 31 - 1]).
          isExtended.getUTCHours() == 10 && isExtended.getUTCMinutes() == 37 && isExtended.getUTCSeconds() == 6 && isExtended.getUTCMilliseconds() == 708;
      } catch (exception) {}
  
      // Internal: Determines whether the native `JSON.stringify` and `parse`
      // implementations are spec-compliant. Based on work by Ken Snyder.
      function has(name) {
        if (has[name] !== undef) {
          // Return cached feature test result.
          return has[name];
        }
        var isSupported;
        if (name == "bug-string-char-index") {
          // IE <= 7 doesn't support accessing string characters using square
          // bracket notation. IE 8 only supports this for primitives.
          isSupported = "a"[0] != "a";
        } else if (name == "json") {
          // Indicates whether both `JSON.stringify` and `JSON.parse` are
          // supported.
          isSupported = has("json-stringify") && has("json-parse");
        } else {
          var value, serialized = '{"a":[1,true,false,null,"\\u0000\\b\\n\\f\\r\\t"]}';
          // Test `JSON.stringify`.
          if (name == "json-stringify") {
            var stringify = exports.stringify, stringifySupported = typeof stringify == "function" && isExtended;
            if (stringifySupported) {
              // A test function object with a custom `toJSON` method.
              (value = function () {
                return 1;
              }).toJSON = value;
              try {
                stringifySupported =
                  // Firefox 3.1b1 and b2 serialize string, number, and boolean
                  // primitives as object literals.
                  stringify(0) === "0" &&
                  // FF 3.1b1, b2, and JSON 2 serialize wrapped primitives as object
                  // literals.
                  stringify(new Number()) === "0" &&
                  stringify(new String()) == '""' &&
                  // FF 3.1b1, 2 throw an error if the value is `null`, `undefined`, or
                  // does not define a canonical JSON representation (this applies to
                  // objects with `toJSON` properties as well, *unless* they are nested
                  // within an object or array).
                  stringify(getClass) === undef &&
                  // IE 8 serializes `undefined` as `"undefined"`. Safari <= 5.1.7 and
                  // FF 3.1b3 pass this test.
                  stringify(undef) === undef &&
                  // Safari <= 5.1.7 and FF 3.1b3 throw `Error`s and `TypeError`s,
                  // respectively, if the value is omitted entirely.
                  stringify() === undef &&
                  // FF 3.1b1, 2 throw an error if the given value is not a number,
                  // string, array, object, Boolean, or `null` literal. This applies to
                  // objects with custom `toJSON` methods as well, unless they are nested
                  // inside object or array literals. YUI 3.0.0b1 ignores custom `toJSON`
                  // methods entirely.
                  stringify(value) === "1" &&
                  stringify([value]) == "[1]" &&
                  // Prototype <= 1.6.1 serializes `[undefined]` as `"[]"` instead of
                  // `"[null]"`.
                  stringify([undef]) == "[null]" &&
                  // YUI 3.0.0b1 fails to serialize `null` literals.
                  stringify(null) == "null" &&
                  // FF 3.1b1, 2 halts serialization if an array contains a function:
                  // `[1, true, getClass, 1]` serializes as "[1,true,],". FF 3.1b3
                  // elides non-JSON values from objects and arrays, unless they
                  // define custom `toJSON` methods.
                  stringify([undef, getClass, null]) == "[null,null,null]" &&
                  // Simple serialization test. FF 3.1b1 uses Unicode escape sequences
                  // where character escape codes are expected (e.g., `\b` => `\u0008`).
                  stringify({ "a": [value, true, false, null, "\x00\b\n\f\r\t"] }) == serialized &&
                  // FF 3.1b1 and b2 ignore the `filter` and `width` arguments.
                  stringify(null, value) === "1" &&
                  stringify([1, 2], null, 1) == "[\n 1,\n 2\n]" &&
                  // JSON 2, Prototype <= 1.7, and older WebKit builds incorrectly
                  // serialize extended years.
                  stringify(new Date(-8.64e15)) == '"-271821-04-20T00:00:00.000Z"' &&
                  // The milliseconds are optional in ES 5, but required in 5.1.
                  stringify(new Date(8.64e15)) == '"+275760-09-13T00:00:00.000Z"' &&
                  // Firefox <= 11.0 incorrectly serializes years prior to 0 as negative
                  // four-digit years instead of six-digit years. Credits: @Yaffle.
                  stringify(new Date(-621987552e5)) == '"-000001-01-01T00:00:00.000Z"' &&
                  // Safari <= 5.1.5 and Opera >= 10.53 incorrectly serialize millisecond
                  // values less than 1000. Credits: @Yaffle.
                  stringify(new Date(-1)) == '"1969-12-31T23:59:59.999Z"';
              } catch (exception) {
                stringifySupported = false;
              }
            }
            isSupported = stringifySupported;
          }
          // Test `JSON.parse`.
          if (name == "json-parse") {
            var parse = exports.parse;
            if (typeof parse == "function") {
              try {
                // FF 3.1b1, b2 will throw an exception if a bare literal is provided.
                // Conforming implementations should also coerce the initial argument to
                // a string prior to parsing.
                if (parse("0") === 0 && !parse(false)) {
                  // Simple parsing test.
                  value = parse(serialized);
                  var parseSupported = value["a"].length == 5 && value["a"][0] === 1;
                  if (parseSupported) {
                    try {
                      // Safari <= 5.1.2 and FF 3.1b1 allow unescaped tabs in strings.
                      parseSupported = !parse('"\t"');
                    } catch (exception) {}
                    if (parseSupported) {
                      try {
                        // FF 4.0 and 4.0.1 allow leading `+` signs and leading
                        // decimal points. FF 4.0, 4.0.1, and IE 9-10 also allow
                        // certain octal literals.
                        parseSupported = parse("01") !== 1;
                      } catch (exception) {}
                    }
                    if (parseSupported) {
                      try {
                        // FF 4.0, 4.0.1, and Rhino 1.7R3-R4 allow trailing decimal
                        // points. These environments, along with FF 3.1b1 and 2,
                        // also allow trailing commas in JSON objects and arrays.
                        parseSupported = parse("1.") !== 1;
                      } catch (exception) {}
                    }
                  }
                }
              } catch (exception) {
                parseSupported = false;
              }
            }
            isSupported = parseSupported;
          }
        }
        return has[name] = !!isSupported;
      }
  
      if (!has("json")) {
        // Common `[[Class]]` name aliases.
        var functionClass = "[object Function]",
            dateClass = "[object Date]",
            numberClass = "[object Number]",
            stringClass = "[object String]",
            arrayClass = "[object Array]",
            booleanClass = "[object Boolean]";
  
        // Detect incomplete support for accessing string characters by index.
        var charIndexBuggy = has("bug-string-char-index");
  
        // Define additional utility methods if the `Date` methods are buggy.
        if (!isExtended) {
          var floor = Math.floor;
          // A mapping between the months of the year and the number of days between
          // January 1st and the first of the respective month.
          var Months = [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334];
          // Internal: Calculates the number of days between the Unix epoch and the
          // first day of the given month.
          var getDay = function (year, month) {
            return Months[month] + 365 * (year - 1970) + floor((year - 1969 + (month = +(month > 1))) / 4) - floor((year - 1901 + month) / 100) + floor((year - 1601 + month) / 400);
          };
        }
  
        // Internal: Determines if a property is a direct property of the given
        // object. Delegates to the native `Object#hasOwnProperty` method.
        if (!(isProperty = objectProto.hasOwnProperty)) {
          isProperty = function (property) {
            var members = {}, constructor;
            if ((members.__proto__ = null, members.__proto__ = {
              // The *proto* property cannot be set multiple times in recent
              // versions of Firefox and SeaMonkey.
              "toString": 1
            }, members).toString != getClass) {
              // Safari <= 2.0.3 doesn't implement `Object#hasOwnProperty`, but
              // supports the mutable *proto* property.
              isProperty = function (property) {
                // Capture and break the object's prototype chain (see section 8.6.2
                // of the ES 5.1 spec). The parenthesized expression prevents an
                // unsafe transformation by the Closure Compiler.
                var original = this.__proto__, result = property in (this.__proto__ = null, this);
                // Restore the original prototype chain.
                this.__proto__ = original;
                return result;
              };
            } else {
              // Capture a reference to the top-level `Object` constructor.
              constructor = members.constructor;
              // Use the `constructor` property to simulate `Object#hasOwnProperty` in
              // other environments.
              isProperty = function (property) {
                var parent = (this.constructor || constructor).prototype;
                return property in this && !(property in parent && this[property] === parent[property]);
              };
            }
            members = null;
            return isProperty.call(this, property);
          };
        }
  
        // Internal: Normalizes the `for...in` iteration algorithm across
        // environments. Each enumerated key is yielded to a `callback` function.
        forEach = function (object, callback) {
          var size = 0, Properties, members, property;
  
          // Tests for bugs in the current environment's `for...in` algorithm. The
          // `valueOf` property inherits the non-enumerable flag from
          // `Object.prototype` in older versions of IE, Netscape, and Mozilla.
          (Properties = function () {
            this.valueOf = 0;
          }).prototype.valueOf = 0;
  
          // Iterate over a new instance of the `Properties` class.
          members = new Properties();
          for (property in members) {
            // Ignore all properties inherited from `Object.prototype`.
            if (isProperty.call(members, property)) {
              size++;
            }
          }
          Properties = members = null;
  
          // Normalize the iteration algorithm.
          if (!size) {
            // A list of non-enumerable properties inherited from `Object.prototype`.
            members = ["valueOf", "toString", "toLocaleString", "propertyIsEnumerable", "isPrototypeOf", "hasOwnProperty", "constructor"];
            // IE <= 8, Mozilla 1.0, and Netscape 6.2 ignore shadowed non-enumerable
            // properties.
            forEach = function (object, callback) {
              var isFunction = getClass.call(object) == functionClass, property, length;
              var hasProperty = !isFunction && typeof object.constructor != "function" && objectTypes[typeof object.hasOwnProperty] && object.hasOwnProperty || isProperty;
              for (property in object) {
                // Gecko <= 1.0 enumerates the `prototype` property of functions under
                // certain conditions; IE does not.
                if (!(isFunction && property == "prototype") && hasProperty.call(object, property)) {
                  callback(property);
                }
              }
              // Manually invoke the callback for each non-enumerable property.
              for (length = members.length; property = members[--length]; hasProperty.call(object, property) && callback(property));
            };
          } else if (size == 2) {
            // Safari <= 2.0.4 enumerates shadowed properties twice.
            forEach = function (object, callback) {
              // Create a set of iterated properties.
              var members = {}, isFunction = getClass.call(object) == functionClass, property;
              for (property in object) {
                // Store each property name to prevent double enumeration. The
                // `prototype` property of functions is not enumerated due to cross-
                // environment inconsistencies.
                if (!(isFunction && property == "prototype") && !isProperty.call(members, property) && (members[property] = 1) && isProperty.call(object, property)) {
                  callback(property);
                }
              }
            };
          } else {
            // No bugs detected; use the standard `for...in` algorithm.
            forEach = function (object, callback) {
              var isFunction = getClass.call(object) == functionClass, property, isConstructor;
              for (property in object) {
                if (!(isFunction && property == "prototype") && isProperty.call(object, property) && !(isConstructor = property === "constructor")) {
                  callback(property);
                }
              }
              // Manually invoke the callback for the `constructor` property due to
              // cross-environment inconsistencies.
              if (isConstructor || isProperty.call(object, (property = "constructor"))) {
                callback(property);
              }
            };
          }
          return forEach(object, callback);
        };
  
        // Public: Serializes a JavaScript `value` as a JSON string. The optional
        // `filter` argument may specify either a function that alters how object and
        // array members are serialized, or an array of strings and numbers that
        // indicates which properties should be serialized. The optional `width`
        // argument may be either a string or number that specifies the indentation
        // level of the output.
        if (!has("json-stringify")) {
          // Internal: A map of control characters and their escaped equivalents.
          var Escapes = {
            92: "\\\\",
            34: '\\"',
            8: "\\b",
            12: "\\f",
            10: "\\n",
            13: "\\r",
            9: "\\t"
          };
  
          // Internal: Converts `value` into a zero-padded string such that its
          // length is at least equal to `width`. The `width` must be <= 6.
          var leadingZeroes = "000000";
          var toPaddedString = function (width, value) {
            // The `|| 0` expression is necessary to work around a bug in
            // Opera <= 7.54u2 where `0 == -0`, but `String(-0) !== "0"`.
            return (leadingZeroes + (value || 0)).slice(-width);
          };
  
          // Internal: Double-quotes a string `value`, replacing all ASCII control
          // characters (characters with code unit values between 0 and 31) with
          // their escaped equivalents. This is an implementation of the
          // `Quote(value)` operation defined in ES 5.1 section 15.12.3.
          var unicodePrefix = "\\u00";
          var quote = function (value) {
            var result = '"', index = 0, length = value.length, useCharIndex = !charIndexBuggy || length > 10;
            var symbols = useCharIndex && (charIndexBuggy ? value.split("") : value);
            for (; index < length; index++) {
              var charCode = value.charCodeAt(index);
              // If the character is a control character, append its Unicode or
              // shorthand escape sequence; otherwise, append the character as-is.
              switch (charCode) {
                case 8: case 9: case 10: case 12: case 13: case 34: case 92:
                  result += Escapes[charCode];
                  break;
                default:
                  if (charCode < 32) {
                    result += unicodePrefix + toPaddedString(2, charCode.toString(16));
                    break;
                  }
                  result += useCharIndex ? symbols[index] : value.charAt(index);
              }
            }
            return result + '"';
          };
  
          // Internal: Recursively serializes an object. Implements the
          // `Str(key, holder)`, `JO(value)`, and `JA(value)` operations.
          var serialize = function (property, object, callback, properties, whitespace, indentation, stack) {
            var value, className, year, month, date, time, hours, minutes, seconds, milliseconds, results, element, index, length, prefix, result;
            try {
              // Necessary for host object support.
              value = object[property];
            } catch (exception) {}
            if (typeof value == "object" && value) {
              className = getClass.call(value);
              if (className == dateClass && !isProperty.call(value, "toJSON")) {
                if (value > -1 / 0 && value < 1 / 0) {
                  // Dates are serialized according to the `Date#toJSON` method
                  // specified in ES 5.1 section 15.9.5.44. See section 15.9.1.15
                  // for the ISO 8601 date time string format.
                  if (getDay) {
                    // Manually compute the year, month, date, hours, minutes,
                    // seconds, and milliseconds if the `getUTC*` methods are
                    // buggy. Adapted from @Yaffle's `date-shim` project.
                    date = floor(value / 864e5);
                    for (year = floor(date / 365.2425) + 1970 - 1; getDay(year + 1, 0) <= date; year++);
                    for (month = floor((date - getDay(year, 0)) / 30.42); getDay(year, month + 1) <= date; month++);
                    date = 1 + date - getDay(year, month);
                    // The `time` value specifies the time within the day (see ES
                    // 5.1 section 15.9.1.2). The formula `(A % B + B) % B` is used
                    // to compute `A modulo B`, as the `%` operator does not
                    // correspond to the `modulo` operation for negative numbers.
                    time = (value % 864e5 + 864e5) % 864e5;
                    // The hours, minutes, seconds, and milliseconds are obtained by
                    // decomposing the time within the day. See section 15.9.1.10.
                    hours = floor(time / 36e5) % 24;
                    minutes = floor(time / 6e4) % 60;
                    seconds = floor(time / 1e3) % 60;
                    milliseconds = time % 1e3;
                  } else {
                    year = value.getUTCFullYear();
                    month = value.getUTCMonth();
                    date = value.getUTCDate();
                    hours = value.getUTCHours();
                    minutes = value.getUTCMinutes();
                    seconds = value.getUTCSeconds();
                    milliseconds = value.getUTCMilliseconds();
                  }
                  // Serialize extended years correctly.
                  value = (year <= 0 || year >= 1e4 ? (year < 0 ? "-" : "+") + toPaddedString(6, year < 0 ? -year : year) : toPaddedString(4, year)) +
                    "-" + toPaddedString(2, month + 1) + "-" + toPaddedString(2, date) +
                    // Months, dates, hours, minutes, and seconds should have two
                    // digits; milliseconds should have three.
                    "T" + toPaddedString(2, hours) + ":" + toPaddedString(2, minutes) + ":" + toPaddedString(2, seconds) +
                    // Milliseconds are optional in ES 5.0, but required in 5.1.
                    "." + toPaddedString(3, milliseconds) + "Z";
                } else {
                  value = null;
                }
              } else if (typeof value.toJSON == "function" && ((className != numberClass && className != stringClass && className != arrayClass) || isProperty.call(value, "toJSON"))) {
                // Prototype <= 1.6.1 adds non-standard `toJSON` methods to the
                // `Number`, `String`, `Date`, and `Array` prototypes. JSON 3
                // ignores all `toJSON` methods on these objects unless they are
                // defined directly on an instance.
                value = value.toJSON(property);
              }
            }
            if (callback) {
              // If a replacement function was provided, call it to obtain the value
              // for serialization.
              value = callback.call(object, property, value);
            }
            if (value === null) {
              return "null";
            }
            className = getClass.call(value);
            if (className == booleanClass) {
              // Booleans are represented literally.
              return "" + value;
            } else if (className == numberClass) {
              // JSON numbers must be finite. `Infinity` and `NaN` are serialized as
              // `"null"`.
              return value > -1 / 0 && value < 1 / 0 ? "" + value : "null";
            } else if (className == stringClass) {
              // Strings are double-quoted and escaped.
              return quote("" + value);
            }
            // Recursively serialize objects and arrays.
            if (typeof value == "object") {
              // Check for cyclic structures. This is a linear search; performance
              // is inversely proportional to the number of unique nested objects.
              for (length = stack.length; length--;) {
                if (stack[length] === value) {
                  // Cyclic structures cannot be serialized by `JSON.stringify`.
                  throw TypeError();
                }
              }
              // Add the object to the stack of traversed objects.
              stack.push(value);
              results = [];
              // Save the current indentation level and indent one additional level.
              prefix = indentation;
              indentation += whitespace;
              if (className == arrayClass) {
                // Recursively serialize array elements.
                for (index = 0, length = value.length; index < length; index++) {
                  element = serialize(index, value, callback, properties, whitespace, indentation, stack);
                  results.push(element === undef ? "null" : element);
                }
                result = results.length ? (whitespace ? "[\n" + indentation + results.join(",\n" + indentation) + "\n" + prefix + "]" : ("[" + results.join(",") + "]")) : "[]";
              } else {
                // Recursively serialize object members. Members are selected from
                // either a user-specified list of property names, or the object
                // itself.
                forEach(properties || value, function (property) {
                  var element = serialize(property, value, callback, properties, whitespace, indentation, stack);
                  if (element !== undef) {
                    // According to ES 5.1 section 15.12.3: "If `gap` {whitespace}
                    // is not the empty string, let `member` {quote(property) + ":"}
                    // be the concatenation of `member` and the `space` character."
                    // The "`space` character" refers to the literal space
                    // character, not the `space` {width} argument provided to
                    // `JSON.stringify`.
                    results.push(quote(property) + ":" + (whitespace ? " " : "") + element);
                  }
                });
                result = results.length ? (whitespace ? "{\n" + indentation + results.join(",\n" + indentation) + "\n" + prefix + "}" : ("{" + results.join(",") + "}")) : "{}";
              }
              // Remove the object from the traversed object stack.
              stack.pop();
              return result;
            }
          };
  
          // Public: `JSON.stringify`. See ES 5.1 section 15.12.3.
          exports.stringify = function (source, filter, width) {
            var whitespace, callback, properties, className;
            if (objectTypes[typeof filter] && filter) {
              if ((className = getClass.call(filter)) == functionClass) {
                callback = filter;
              } else if (className == arrayClass) {
                // Convert the property names array into a makeshift set.
                properties = {};
                for (var index = 0, length = filter.length, value; index < length; value = filter[index++], ((className = getClass.call(value)), className == stringClass || className == numberClass) && (properties[value] = 1));
              }
            }
            if (width) {
              if ((className = getClass.call(width)) == numberClass) {
                // Convert the `width` to an integer and create a string containing
                // `width` number of space characters.
                if ((width -= width % 1) > 0) {
                  for (whitespace = "", width > 10 && (width = 10); whitespace.length < width; whitespace += " ");
                }
              } else if (className == stringClass) {
                whitespace = width.length <= 10 ? width : width.slice(0, 10);
              }
            }
            // Opera <= 7.54u2 discards the values associated with empty string keys
            // (`""`) only if they are used directly within an object member list
            // (e.g., `!("" in { "": 1})`).
            return serialize("", (value = {}, value[""] = source, value), callback, properties, whitespace, "", []);
          };
        }
  
        // Public: Parses a JSON source string.
        if (!has("json-parse")) {
          var fromCharCode = String.fromCharCode;
  
          // Internal: A map of escaped control characters and their unescaped
          // equivalents.
          var Unescapes = {
            92: "\\",
            34: '"',
            47: "/",
            98: "\b",
            116: "\t",
            110: "\n",
            102: "\f",
            114: "\r"
          };
  
          // Internal: Stores the parser state.
          var Index, Source;
  
          // Internal: Resets the parser state and throws a `SyntaxError`.
          var abort = function () {
            Index = Source = null;
            throw SyntaxError();
          };
  
          // Internal: Returns the next token, or `"$"` if the parser has reached
          // the end of the source string. A token may be a string, number, `null`
          // literal, or Boolean literal.
          var lex = function () {
            var source = Source, length = source.length, value, begin, position, isSigned, charCode;
            while (Index < length) {
              charCode = source.charCodeAt(Index);
              switch (charCode) {
                case 9: case 10: case 13: case 32:
                  // Skip whitespace tokens, including tabs, carriage returns, line
                  // feeds, and space characters.
                  Index++;
                  break;
                case 123: case 125: case 91: case 93: case 58: case 44:
                  // Parse a punctuator token (`{`, `}`, `[`, `]`, `:`, or `,`) at
                  // the current position.
                  value = charIndexBuggy ? source.charAt(Index) : source[Index];
                  Index++;
                  return value;
                case 34:
                  // `"` delimits a JSON string; advance to the next character and
                  // begin parsing the string. String tokens are prefixed with the
                  // sentinel `@` character to distinguish them from punctuators and
                  // end-of-string tokens.
                  for (value = "@", Index++; Index < length;) {
                    charCode = source.charCodeAt(Index);
                    if (charCode < 32) {
                      // Unescaped ASCII control characters (those with a code unit
                      // less than the space character) are not permitted.
                      abort();
                    } else if (charCode == 92) {
                      // A reverse solidus (`\`) marks the beginning of an escaped
                      // control character (including `"`, `\`, and `/`) or Unicode
                      // escape sequence.
                      charCode = source.charCodeAt(++Index);
                      switch (charCode) {
                        case 92: case 34: case 47: case 98: case 116: case 110: case 102: case 114:
                          // Revive escaped control characters.
                          value += Unescapes[charCode];
                          Index++;
                          break;
                        case 117:
                          // `\u` marks the beginning of a Unicode escape sequence.
                          // Advance to the first character and validate the
                          // four-digit code point.
                          begin = ++Index;
                          for (position = Index + 4; Index < position; Index++) {
                            charCode = source.charCodeAt(Index);
                            // A valid sequence comprises four hexdigits (case-
                            // insensitive) that form a single hexadecimal value.
                            if (!(charCode >= 48 && charCode <= 57 || charCode >= 97 && charCode <= 102 || charCode >= 65 && charCode <= 70)) {
                              // Invalid Unicode escape sequence.
                              abort();
                            }
                          }
                          // Revive the escaped character.
                          value += fromCharCode("0x" + source.slice(begin, Index));
                          break;
                        default:
                          // Invalid escape sequence.
                          abort();
                      }
                    } else {
                      if (charCode == 34) {
                        // An unescaped double-quote character marks the end of the
                        // string.
                        break;
                      }
                      charCode = source.charCodeAt(Index);
                      begin = Index;
                      // Optimize for the common case where a string is valid.
                      while (charCode >= 32 && charCode != 92 && charCode != 34) {
                        charCode = source.charCodeAt(++Index);
                      }
                      // Append the string as-is.
                      value += source.slice(begin, Index);
                    }
                  }
                  if (source.charCodeAt(Index) == 34) {
                    // Advance to the next character and return the revived string.
                    Index++;
                    return value;
                  }
                  // Unterminated string.
                  abort();
                default:
                  // Parse numbers and literals.
                  begin = Index;
                  // Advance past the negative sign, if one is specified.
                  if (charCode == 45) {
                    isSigned = true;
                    charCode = source.charCodeAt(++Index);
                  }
                  // Parse an integer or floating-point value.
                  if (charCode >= 48 && charCode <= 57) {
                    // Leading zeroes are interpreted as octal literals.
                    if (charCode == 48 && ((charCode = source.charCodeAt(Index + 1)), charCode >= 48 && charCode <= 57)) {
                      // Illegal octal literal.
                      abort();
                    }
                    isSigned = false;
                    // Parse the integer component.
                    for (; Index < length && ((charCode = source.charCodeAt(Index)), charCode >= 48 && charCode <= 57); Index++);
                    // Floats cannot contain a leading decimal point; however, this
                    // case is already accounted for by the parser.
                    if (source.charCodeAt(Index) == 46) {
                      position = ++Index;
                      // Parse the decimal component.
                      for (; position < length && ((charCode = source.charCodeAt(position)), charCode >= 48 && charCode <= 57); position++);
                      if (position == Index) {
                        // Illegal trailing decimal.
                        abort();
                      }
                      Index = position;
                    }
                    // Parse exponents. The `e` denoting the exponent is
                    // case-insensitive.
                    charCode = source.charCodeAt(Index);
                    if (charCode == 101 || charCode == 69) {
                      charCode = source.charCodeAt(++Index);
                      // Skip past the sign following the exponent, if one is
                      // specified.
                      if (charCode == 43 || charCode == 45) {
                        Index++;
                      }
                      // Parse the exponential component.
                      for (position = Index; position < length && ((charCode = source.charCodeAt(position)), charCode >= 48 && charCode <= 57); position++);
                      if (position == Index) {
                        // Illegal empty exponent.
                        abort();
                      }
                      Index = position;
                    }
                    // Coerce the parsed value to a JavaScript number.
                    return +source.slice(begin, Index);
                  }
                  // A negative sign may only precede numbers.
                  if (isSigned) {
                    abort();
                  }
                  // `true`, `false`, and `null` literals.
                  if (source.slice(Index, Index + 4) == "true") {
                    Index += 4;
                    return true;
                  } else if (source.slice(Index, Index + 5) == "false") {
                    Index += 5;
                    return false;
                  } else if (source.slice(Index, Index + 4) == "null") {
                    Index += 4;
                    return null;
                  }
                  // Unrecognized token.
                  abort();
              }
            }
            // Return the sentinel `$` character if the parser has reached the end
            // of the source string.
            return "$";
          };
  
          // Internal: Parses a JSON `value` token.
          var get = function (value) {
            var results, hasMembers;
            if (value == "$") {
              // Unexpected end of input.
              abort();
            }
            if (typeof value == "string") {
              if ((charIndexBuggy ? value.charAt(0) : value[0]) == "@") {
                // Remove the sentinel `@` character.
                return value.slice(1);
              }
              // Parse object and array literals.
              if (value == "[") {
                // Parses a JSON array, returning a new JavaScript array.
                results = [];
                for (;; hasMembers || (hasMembers = true)) {
                  value = lex();
                  // A closing square bracket marks the end of the array literal.
                  if (value == "]") {
                    break;
                  }
                  // If the array literal contains elements, the current token
                  // should be a comma separating the previous element from the
                  // next.
                  if (hasMembers) {
                    if (value == ",") {
                      value = lex();
                      if (value == "]") {
                        // Unexpected trailing `,` in array literal.
                        abort();
                      }
                    } else {
                      // A `,` must separate each array element.
                      abort();
                    }
                  }
                  // Elisions and leading commas are not permitted.
                  if (value == ",") {
                    abort();
                  }
                  results.push(get(value));
                }
                return results;
              } else if (value == "{") {
                // Parses a JSON object, returning a new JavaScript object.
                results = {};
                for (;; hasMembers || (hasMembers = true)) {
                  value = lex();
                  // A closing curly brace marks the end of the object literal.
                  if (value == "}") {
                    break;
                  }
                  // If the object literal contains members, the current token
                  // should be a comma separator.
                  if (hasMembers) {
                    if (value == ",") {
                      value = lex();
                      if (value == "}") {
                        // Unexpected trailing `,` in object literal.
                        abort();
                      }
                    } else {
                      // A `,` must separate each object member.
                      abort();
                    }
                  }
                  // Leading commas are not permitted, object property names must be
                  // double-quoted strings, and a `:` must separate each property
                  // name and value.
                  if (value == "," || typeof value != "string" || (charIndexBuggy ? value.charAt(0) : value[0]) != "@" || lex() != ":") {
                    abort();
                  }
                  results[value.slice(1)] = get(lex());
                }
                return results;
              }
              // Unexpected token encountered.
              abort();
            }
            return value;
          };
  
          // Internal: Updates a traversed object member.
          var update = function (source, property, callback) {
            var element = walk(source, property, callback);
            if (element === undef) {
              delete source[property];
            } else {
              source[property] = element;
            }
          };
  
          // Internal: Recursively traverses a parsed JSON object, invoking the
          // `callback` function for each value. This is an implementation of the
          // `Walk(holder, name)` operation defined in ES 5.1 section 15.12.2.
          var walk = function (source, property, callback) {
            var value = source[property], length;
            if (typeof value == "object" && value) {
              // `forEach` can't be used to traverse an array in Opera <= 8.54
              // because its `Object#hasOwnProperty` implementation returns `false`
              // for array indices (e.g., `![1, 2, 3].hasOwnProperty("0")`).
              if (getClass.call(value) == arrayClass) {
                for (length = value.length; length--;) {
                  update(value, length, callback);
                }
              } else {
                forEach(value, function (property) {
                  update(value, property, callback);
                });
              }
            }
            return callback.call(source, property, value);
          };
  
          // Public: `JSON.parse`. See ES 5.1 section 15.12.2.
          exports.parse = function (source, callback) {
            var result, value;
            Index = 0;
            Source = "" + source;
            result = get(lex());
            // If a JSON string contains multiple tokens, it is invalid.
            if (lex() != "$") {
              abort();
            }
            // Reset the parser state.
            Index = Source = null;
            return callback && getClass.call(callback) == functionClass ? walk((value = {}, value[""] = result, value), "", callback) : result;
          };
        }
      }
  
      exports["runInContext"] = runInContext;
      return exports;
    }
  
    if (freeExports && !isLoader) {
      // Export for CommonJS environments.
      runInContext(root, freeExports);
    } else {
      // Export for web browsers and JavaScript engines.
      var nativeJSON = root.JSON,
          previousJSON = root["JSON3"],
          isRestored = false;
  
      var JSON3 = runInContext(root, (root["JSON3"] = {
        // Public: Restores the original value of the global `JSON` object and
        // returns a reference to the `JSON3` object.
        "noConflict": function () {
          if (!isRestored) {
            isRestored = true;
            root.JSON = nativeJSON;
            root["JSON3"] = previousJSON;
            nativeJSON = previousJSON = null;
          }
          return JSON3;
        }
      }));
  
      root.JSON = {
        "parse": JSON3.parse,
        "stringify": JSON3.stringify
      };
    }
  
    // Export for asynchronous module loaders.
    if (isLoader) {
      define(function () {
        return JSON3;
      });
    }
  }).call(this);
  
  }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
  },{}],55:[function(require,module,exports){
  /**
   * lodash 3.2.0 (Custom Build) <https://lodash.com/>
   * Build: `lodash modern modularize exports="npm" -o ./`
   * Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
   * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
   * Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
   * Available under MIT license <https://lodash.com/license>
   */
  var baseCopy = require('lodash._basecopy'),
      keys = require('lodash.keys');
  
  /**
   * The base implementation of `_.assign` without support for argument juggling,
   * multiple sources, and `customizer` functions.
   *
   * @private
   * @param {Object} object The destination object.
   * @param {Object} source The source object.
   * @returns {Object} Returns `object`.
   */
  function baseAssign(object, source) {
    return source == null
      ? object
      : baseCopy(source, keys(source), object);
  }
  
  module.exports = baseAssign;
  
  },{"lodash._basecopy":56,"lodash.keys":63}],56:[function(require,module,exports){
  /**
   * lodash 3.0.1 (Custom Build) <https://lodash.com/>
   * Build: `lodash modern modularize exports="npm" -o ./`
   * Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
   * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
   * Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
   * Available under MIT license <https://lodash.com/license>
   */
  
  /**
   * Copies properties of `source` to `object`.
   *
   * @private
   * @param {Object} source The object to copy properties from.
   * @param {Array} props The property names to copy.
   * @param {Object} [object={}] The object to copy properties to.
   * @returns {Object} Returns `object`.
   */
  function baseCopy(source, props, object) {
    object || (object = {});
  
    var index = -1,
        length = props.length;
  
    while (++index < length) {
      var key = props[index];
      object[key] = source[key];
    }
    return object;
  }
  
  module.exports = baseCopy;
  
  },{}],57:[function(require,module,exports){
  /**
   * lodash 3.0.3 (Custom Build) <https://lodash.com/>
   * Build: `lodash modern modularize exports="npm" -o ./`
   * Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
   * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
   * Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
   * Available under MIT license <https://lodash.com/license>
   */
  
  /**
   * 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.
   */
  var baseCreate = (function() {
    function object() {}
    return function(prototype) {
      if (isObject(prototype)) {
        object.prototype = prototype;
        var result = new object;
        object.prototype = undefined;
      }
      return result || {};
    };
  }());
  
  /**
   * Checks if `value` is the [language type](https://es5.github.io/#x8) of `Object`.
   * (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
   *
   * @static
   * @memberOf _
   * @category Lang
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is an object, else `false`.
   * @example
   *
   * _.isObject({});
   * // => true
   *
   * _.isObject([1, 2, 3]);
   * // => true
   *
   * _.isObject(1);
   * // => false
   */
  function isObject(value) {
    // Avoid a V8 JIT bug in Chrome 19-20.
    // See https://code.google.com/p/v8/issues/detail?id=2291 for more details.
    var type = typeof value;
    return !!value && (type == 'object' || type == 'function');
  }
  
  module.exports = baseCreate;
  
  },{}],58:[function(require,module,exports){
  /**
   * lodash 3.9.1 (Custom Build) <https://lodash.com/>
   * Build: `lodash modern modularize exports="npm" -o ./`
   * Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
   * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
   * Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
   * Available under MIT license <https://lodash.com/license>
   */
  
  /** `Object#toString` result references. */
  var funcTag = '[object Function]';
  
  /** Used to detect host constructors (Safari > 5). */
  var reIsHostCtor = /^\[object .+?Constructor\]$/;
  
  /**
   * Checks if `value` is object-like.
   *
   * @private
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
   */
  function isObjectLike(value) {
    return !!value && typeof value == 'object';
  }
  
  /** Used for native method references. */
  var objectProto = Object.prototype;
  
  /** Used to resolve the decompiled source of functions. */
  var fnToString = Function.prototype.toString;
  
  /** Used to check objects for own properties. */
  var hasOwnProperty = objectProto.hasOwnProperty;
  
  /**
   * Used to resolve the [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
   * of values.
   */
  var objToString = objectProto.toString;
  
  /** Used to detect if a method is native. */
  var reIsNative = RegExp('^' +
    fnToString.call(hasOwnProperty).replace(/[\\^$.*+?()[\]{}|]/g, '\\$&')
    .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$'
  );
  
  /**
   * Gets the native function at `key` of `object`.
   *
   * @private
   * @param {Object} object The object to query.
   * @param {string} key The key of the method to get.
   * @returns {*} Returns the function if it's native, else `undefined`.
   */
  function getNative(object, key) {
    var value = object == null ? undefined : object[key];
    return isNative(value) ? value : undefined;
  }
  
  /**
   * Checks if `value` is classified as a `Function` object.
   *
   * @static
   * @memberOf _
   * @category Lang
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
   * @example
   *
   * _.isFunction(_);
   * // => true
   *
   * _.isFunction(/abc/);
   * // => false
   */
  function isFunction(value) {
    // The use of `Object#toString` avoids issues with the `typeof` operator
    // in older versions of Chrome and Safari which return 'function' for regexes
    // and Safari 8 equivalents which return 'object' for typed array constructors.
    return isObject(value) && objToString.call(value) == funcTag;
  }
  
  /**
   * Checks if `value` is the [language type](https://es5.github.io/#x8) of `Object`.
   * (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
   *
   * @static
   * @memberOf _
   * @category Lang
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is an object, else `false`.
   * @example
   *
   * _.isObject({});
   * // => true
   *
   * _.isObject([1, 2, 3]);
   * // => true
   *
   * _.isObject(1);
   * // => false
   */
  function isObject(value) {
    // Avoid a V8 JIT bug in Chrome 19-20.
    // See https://code.google.com/p/v8/issues/detail?id=2291 for more details.
    var type = typeof value;
    return !!value && (type == 'object' || type == 'function');
  }
  
  /**
   * Checks if `value` is a native function.
   *
   * @static
   * @memberOf _
   * @category Lang
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is a native function, else `false`.
   * @example
   *
   * _.isNative(Array.prototype.push);
   * // => true
   *
   * _.isNative(_);
   * // => false
   */
  function isNative(value) {
    if (value == null) {
      return false;
    }
    if (isFunction(value)) {
      return reIsNative.test(fnToString.call(value));
    }
    return isObjectLike(value) && reIsHostCtor.test(value);
  }
  
  module.exports = getNative;
  
  },{}],59:[function(require,module,exports){
  /**
   * lodash 3.0.9 (Custom Build) <https://lodash.com/>
   * Build: `lodash modern modularize exports="npm" -o ./`
   * Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
   * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
   * Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
   * Available under MIT license <https://lodash.com/license>
   */
  
  /** Used to detect unsigned integer values. */
  var reIsUint = /^\d+$/;
  
  /**
   * Used as the [maximum length](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-number.max_safe_integer)
   * of an array-like value.
   */
  var MAX_SAFE_INTEGER = 9007199254740991;
  
  /**
   * The base implementation of `_.property` without support for deep paths.
   *
   * @private
   * @param {string} key The key of the property to get.
   * @returns {Function} Returns the new function.
   */
  function baseProperty(key) {
    return function(object) {
      return object == null ? undefined : object[key];
    };
  }
  
  /**
   * Gets the "length" property value of `object`.
   *
   * **Note:** This function is used to avoid a [JIT bug](https://bugs.webkit.org/show_bug.cgi?id=142792)
   * that affects Safari on at least iOS 8.1-8.3 ARM64.
   *
   * @private
   * @param {Object} object The object to query.
   * @returns {*} Returns the "length" value.
   */
  var getLength = baseProperty('length');
  
  /**
   * Checks if `value` is array-like.
   *
   * @private
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is array-like, else `false`.
   */
  function isArrayLike(value) {
    return value != null && isLength(getLength(value));
  }
  
  /**
   * Checks if `value` is a valid array-like index.
   *
   * @private
   * @param {*} value The value to check.
   * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
   * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
   */
  function isIndex(value, length) {
    value = (typeof value == 'number' || reIsUint.test(value)) ? +value : -1;
    length = length == null ? MAX_SAFE_INTEGER : length;
    return value > -1 && value % 1 == 0 && value < length;
  }
  
  /**
   * Checks if the provided arguments are from an iteratee call.
   *
   * @private
   * @param {*} value The potential iteratee value argument.
   * @param {*} index The potential iteratee index or key argument.
   * @param {*} object The potential iteratee object argument.
   * @returns {boolean} Returns `true` if the arguments are from an iteratee call, else `false`.
   */
  function isIterateeCall(value, index, object) {
    if (!isObject(object)) {
      return false;
    }
    var type = typeof index;
    if (type == 'number'
        ? (isArrayLike(object) && isIndex(index, object.length))
        : (type == 'string' && index in object)) {
      var other = object[index];
      return value === value ? (value === other) : (other !== other);
    }
    return false;
  }
  
  /**
   * Checks if `value` is a valid array-like length.
   *
   * **Note:** This function is based on [`ToLength`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength).
   *
   * @private
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
   */
  function isLength(value) {
    return typeof value == 'number' && value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
  }
  
  /**
   * Checks if `value` is the [language type](https://es5.github.io/#x8) of `Object`.
   * (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
   *
   * @static
   * @memberOf _
   * @category Lang
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is an object, else `false`.
   * @example
   *
   * _.isObject({});
   * // => true
   *
   * _.isObject([1, 2, 3]);
   * // => true
   *
   * _.isObject(1);
   * // => false
   */
  function isObject(value) {
    // Avoid a V8 JIT bug in Chrome 19-20.
    // See https://code.google.com/p/v8/issues/detail?id=2291 for more details.
    var type = typeof value;
    return !!value && (type == 'object' || type == 'function');
  }
  
  module.exports = isIterateeCall;
  
  },{}],60:[function(require,module,exports){
  /**
   * lodash 3.1.1 (Custom Build) <https://lodash.com/>
   * Build: `lodash modern modularize exports="npm" -o ./`
   * Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
   * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
   * Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
   * Available under MIT license <https://lodash.com/license>
   */
  var baseAssign = require('lodash._baseassign'),
      baseCreate = require('lodash._basecreate'),
      isIterateeCall = require('lodash._isiterateecall');
  
  /**
   * Creates an object that inherits from the given `prototype` object. If a
   * `properties` object is provided its own enumerable properties are assigned
   * to the created object.
   *
   * @static
   * @memberOf _
   * @category Object
   * @param {Object} prototype The object to inherit from.
   * @param {Object} [properties] The properties to assign to the object.
   * @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
   * @returns {Object} Returns the new object.
   * @example
   *
   * function Shape() {
   *   this.x = 0;
   *   this.y = 0;
   * }
   *
   * function Circle() {
   *   Shape.call(this);
   * }
   *
   * Circle.prototype = _.create(Shape.prototype, {
   *   'constructor': Circle
   * });
   *
   * var circle = new Circle;
   * circle instanceof Circle;
   * // => true
   *
   * circle instanceof Shape;
   * // => true
   */
  function create(prototype, properties, guard) {
    var result = baseCreate(prototype);
    if (guard && isIterateeCall(prototype, properties, guard)) {
      properties = undefined;
    }
    return properties ? baseAssign(result, properties) : result;
  }
  
  module.exports = create;
  
  },{"lodash._baseassign":55,"lodash._basecreate":57,"lodash._isiterateecall":59}],61:[function(require,module,exports){
  /**
   * lodash (Custom Build) <https://lodash.com/>
   * Build: `lodash modularize exports="npm" -o ./`
   * Copyright jQuery Foundation and other contributors <https://jquery.org/>
   * Released under MIT license <https://lodash.com/license>
   * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
   * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
   */
  
  /** Used as references for various `Number` constants. */
  var MAX_SAFE_INTEGER = 9007199254740991;
  
  /** `Object#toString` result references. */
  var argsTag = '[object Arguments]',
      funcTag = '[object Function]',
      genTag = '[object GeneratorFunction]';
  
  /** Used for built-in method references. */
  var objectProto = Object.prototype;
  
  /** Used to check objects for own properties. */
  var hasOwnProperty = objectProto.hasOwnProperty;
  
  /**
   * Used to resolve the
   * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
   * of values.
   */
  var objectToString = objectProto.toString;
  
  /** Built-in value references. */
  var propertyIsEnumerable = objectProto.propertyIsEnumerable;
  
  /**
   * Checks if `value` is likely an `arguments` object.
   *
   * @static
   * @memberOf _
   * @since 0.1.0
   * @category Lang
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is an `arguments` object,
   *  else `false`.
   * @example
   *
   * _.isArguments(function() { return arguments; }());
   * // => true
   *
   * _.isArguments([1, 2, 3]);
   * // => false
   */
  function isArguments(value) {
    // Safari 8.1 makes `arguments.callee` enumerable in strict mode.
    return isArrayLikeObject(value) && hasOwnProperty.call(value, 'callee') &&
      (!propertyIsEnumerable.call(value, 'callee') || objectToString.call(value) == argsTag);
  }
  
  /**
   * Checks if `value` is array-like. A value is considered array-like if it's
   * not a function and has a `value.length` that's an integer greater than or
   * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.
   *
   * @static
   * @memberOf _
   * @since 4.0.0
   * @category Lang
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is array-like, else `false`.
   * @example
   *
   * _.isArrayLike([1, 2, 3]);
   * // => true
   *
   * _.isArrayLike(document.body.children);
   * // => true
   *
   * _.isArrayLike('abc');
   * // => true
   *
   * _.isArrayLike(_.noop);
   * // => false
   */
  function isArrayLike(value) {
    return value != null && isLength(value.length) && !isFunction(value);
  }
  
  /**
   * This method is like `_.isArrayLike` except that it also checks if `value`
   * is an object.
   *
   * @static
   * @memberOf _
   * @since 4.0.0
   * @category Lang
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is an array-like object,
   *  else `false`.
   * @example
   *
   * _.isArrayLikeObject([1, 2, 3]);
   * // => true
   *
   * _.isArrayLikeObject(document.body.children);
   * // => true
   *
   * _.isArrayLikeObject('abc');
   * // => false
   *
   * _.isArrayLikeObject(_.noop);
   * // => false
   */
  function isArrayLikeObject(value) {
    return isObjectLike(value) && isArrayLike(value);
  }
  
  /**
   * Checks if `value` is classified as a `Function` object.
   *
   * @static
   * @memberOf _
   * @since 0.1.0
   * @category Lang
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is a function, else `false`.
   * @example
   *
   * _.isFunction(_);
   * // => true
   *
   * _.isFunction(/abc/);
   * // => false
   */
  function isFunction(value) {
    // The use of `Object#toString` avoids issues with the `typeof` operator
    // in Safari 8-9 which returns 'object' for typed array and other constructors.
    var tag = isObject(value) ? objectToString.call(value) : '';
    return tag == funcTag || tag == genTag;
  }
  
  /**
   * Checks if `value` is a valid array-like length.
   *
   * **Note:** This method is loosely based on
   * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
   *
   * @static
   * @memberOf _
   * @since 4.0.0
   * @category Lang
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
   * @example
   *
   * _.isLength(3);
   * // => true
   *
   * _.isLength(Number.MIN_VALUE);
   * // => false
   *
   * _.isLength(Infinity);
   * // => false
   *
   * _.isLength('3');
   * // => false
   */
  function isLength(value) {
    return typeof value == 'number' &&
      value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
  }
  
  /**
   * Checks if `value` is the
   * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)
   * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
   *
   * @static
   * @memberOf _
   * @since 0.1.0
   * @category Lang
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is an object, else `false`.
   * @example
   *
   * _.isObject({});
   * // => true
   *
   * _.isObject([1, 2, 3]);
   * // => true
   *
   * _.isObject(_.noop);
   * // => true
   *
   * _.isObject(null);
   * // => false
   */
  function isObject(value) {
    var type = typeof value;
    return !!value && (type == 'object' || type == 'function');
  }
  
  /**
   * Checks if `value` is object-like. A value is object-like if it's not `null`
   * and has a `typeof` result of "object".
   *
   * @static
   * @memberOf _
   * @since 4.0.0
   * @category Lang
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
   * @example
   *
   * _.isObjectLike({});
   * // => true
   *
   * _.isObjectLike([1, 2, 3]);
   * // => true
   *
   * _.isObjectLike(_.noop);
   * // => false
   *
   * _.isObjectLike(null);
   * // => false
   */
  function isObjectLike(value) {
    return !!value && typeof value == 'object';
  }
  
  module.exports = isArguments;
  
  },{}],62:[function(require,module,exports){
  /**
   * lodash 3.0.4 (Custom Build) <https://lodash.com/>
   * Build: `lodash modern modularize exports="npm" -o ./`
   * Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
   * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
   * Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
   * Available under MIT license <https://lodash.com/license>
   */
  
  /** `Object#toString` result references. */
  var arrayTag = '[object Array]',
      funcTag = '[object Function]';
  
  /** Used to detect host constructors (Safari > 5). */
  var reIsHostCtor = /^\[object .+?Constructor\]$/;
  
  /**
   * Checks if `value` is object-like.
   *
   * @private
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
   */
  function isObjectLike(value) {
    return !!value && typeof value == 'object';
  }
  
  /** Used for native method references. */
  var objectProto = Object.prototype;
  
  /** Used to resolve the decompiled source of functions. */
  var fnToString = Function.prototype.toString;
  
  /** Used to check objects for own properties. */
  var hasOwnProperty = objectProto.hasOwnProperty;
  
  /**
   * Used to resolve the [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
   * of values.
   */
  var objToString = objectProto.toString;
  
  /** Used to detect if a method is native. */
  var reIsNative = RegExp('^' +
    fnToString.call(hasOwnProperty).replace(/[\\^$.*+?()[\]{}|]/g, '\\$&')
    .replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$'
  );
  
  /* Native method references for those with the same name as other `lodash` methods. */
  var nativeIsArray = getNative(Array, 'isArray');
  
  /**
   * Used as the [maximum length](http://ecma-international.org/ecma-262/6.0/#sec-number.max_safe_integer)
   * of an array-like value.
   */
  var MAX_SAFE_INTEGER = 9007199254740991;
  
  /**
   * Gets the native function at `key` of `object`.
   *
   * @private
   * @param {Object} object The object to query.
   * @param {string} key The key of the method to get.
   * @returns {*} Returns the function if it's native, else `undefined`.
   */
  function getNative(object, key) {
    var value = object == null ? undefined : object[key];
    return isNative(value) ? value : undefined;
  }
  
  /**
   * Checks if `value` is a valid array-like length.
   *
   * **Note:** This function is based on [`ToLength`](http://ecma-international.org/ecma-262/6.0/#sec-tolength).
   *
   * @private
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
   */
  function isLength(value) {
    return typeof value == 'number' && value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
  }
  
  /**
   * Checks if `value` is classified as an `Array` object.
   *
   * @static
   * @memberOf _
   * @category Lang
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
   * @example
   *
   * _.isArray([1, 2, 3]);
   * // => true
   *
   * _.isArray(function() { return arguments; }());
   * // => false
   */
  var isArray = nativeIsArray || function(value) {
    return isObjectLike(value) && isLength(value.length) && objToString.call(value) == arrayTag;
  };
  
  /**
   * Checks if `value` is classified as a `Function` object.
   *
   * @static
   * @memberOf _
   * @category Lang
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
   * @example
   *
   * _.isFunction(_);
   * // => true
   *
   * _.isFunction(/abc/);
   * // => false
   */
  function isFunction(value) {
    // The use of `Object#toString` avoids issues with the `typeof` operator
    // in older versions of Chrome and Safari which return 'function' for regexes
    // and Safari 8 equivalents which return 'object' for typed array constructors.
    return isObject(value) && objToString.call(value) == funcTag;
  }
  
  /**
   * Checks if `value` is the [language type](https://es5.github.io/#x8) of `Object`.
   * (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
   *
   * @static
   * @memberOf _
   * @category Lang
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is an object, else `false`.
   * @example
   *
   * _.isObject({});
   * // => true
   *
   * _.isObject([1, 2, 3]);
   * // => true
   *
   * _.isObject(1);
   * // => false
   */
  function isObject(value) {
    // Avoid a V8 JIT bug in Chrome 19-20.
    // See https://code.google.com/p/v8/issues/detail?id=2291 for more details.
    var type = typeof value;
    return !!value && (type == 'object' || type == 'function');
  }
  
  /**
   * Checks if `value` is a native function.
   *
   * @static
   * @memberOf _
   * @category Lang
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is a native function, else `false`.
   * @example
   *
   * _.isNative(Array.prototype.push);
   * // => true
   *
   * _.isNative(_);
   * // => false
   */
  function isNative(value) {
    if (value == null) {
      return false;
    }
    if (isFunction(value)) {
      return reIsNative.test(fnToString.call(value));
    }
    return isObjectLike(value) && reIsHostCtor.test(value);
  }
  
  module.exports = isArray;
  
  },{}],63:[function(require,module,exports){
  /**
   * lodash 3.1.2 (Custom Build) <https://lodash.com/>
   * Build: `lodash modern modularize exports="npm" -o ./`
   * Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
   * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
   * Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
   * Available under MIT license <https://lodash.com/license>
   */
  var getNative = require('lodash._getnative'),
      isArguments = require('lodash.isarguments'),
      isArray = require('lodash.isarray');
  
  /** Used to detect unsigned integer values. */
  var reIsUint = /^\d+$/;
  
  /** Used for native method references. */
  var objectProto = Object.prototype;
  
  /** Used to check objects for own properties. */
  var hasOwnProperty = objectProto.hasOwnProperty;
  
  /* Native method references for those with the same name as other `lodash` methods. */
  var nativeKeys = getNative(Object, 'keys');
  
  /**
   * Used as the [maximum length](http://ecma-international.org/ecma-262/6.0/#sec-number.max_safe_integer)
   * of an array-like value.
   */
  var MAX_SAFE_INTEGER = 9007199254740991;
  
  /**
   * The base implementation of `_.property` without support for deep paths.
   *
   * @private
   * @param {string} key The key of the property to get.
   * @returns {Function} Returns the new function.
   */
  function baseProperty(key) {
    return function(object) {
      return object == null ? undefined : object[key];
    };
  }
  
  /**
   * Gets the "length" property value of `object`.
   *
   * **Note:** This function is used to avoid a [JIT bug](https://bugs.webkit.org/show_bug.cgi?id=142792)
   * that affects Safari on at least iOS 8.1-8.3 ARM64.
   *
   * @private
   * @param {Object} object The object to query.
   * @returns {*} Returns the "length" value.
   */
  var getLength = baseProperty('length');
  
  /**
   * Checks if `value` is array-like.
   *
   * @private
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is array-like, else `false`.
   */
  function isArrayLike(value) {
    return value != null && isLength(getLength(value));
  }
  
  /**
   * Checks if `value` is a valid array-like index.
   *
   * @private
   * @param {*} value The value to check.
   * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
   * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
   */
  function isIndex(value, length) {
    value = (typeof value == 'number' || reIsUint.test(value)) ? +value : -1;
    length = length == null ? MAX_SAFE_INTEGER : length;
    return value > -1 && value % 1 == 0 && value < length;
  }
  
  /**
   * Checks if `value` is a valid array-like length.
   *
   * **Note:** This function is based on [`ToLength`](http://ecma-international.org/ecma-262/6.0/#sec-tolength).
   *
   * @private
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
   */
  function isLength(value) {
    return typeof value == 'number' && value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
  }
  
  /**
   * A fallback implementation of `Object.keys` which creates an array of the
   * own enumerable property names of `object`.
   *
   * @private
   * @param {Object} object The object to query.
   * @returns {Array} Returns the array of property names.
   */
  function shimKeys(object) {
    var props = keysIn(object),
        propsLength = props.length,
        length = propsLength && object.length;
  
    var allowIndexes = !!length && isLength(length) &&
      (isArray(object) || isArguments(object));
  
    var index = -1,
        result = [];
  
    while (++index < propsLength) {
      var key = props[index];
      if ((allowIndexes && isIndex(key, length)) || hasOwnProperty.call(object, key)) {
        result.push(key);
      }
    }
    return result;
  }
  
  /**
   * Checks if `value` is the [language type](https://es5.github.io/#x8) of `Object`.
   * (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
   *
   * @static
   * @memberOf _
   * @category Lang
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is an object, else `false`.
   * @example
   *
   * _.isObject({});
   * // => true
   *
   * _.isObject([1, 2, 3]);
   * // => true
   *
   * _.isObject(1);
   * // => false
   */
  function isObject(value) {
    // Avoid a V8 JIT bug in Chrome 19-20.
    // See https://code.google.com/p/v8/issues/detail?id=2291 for more details.
    var type = typeof value;
    return !!value && (type == 'object' || type == 'function');
  }
  
  /**
   * Creates an array of the own enumerable property names of `object`.
   *
   * **Note:** Non-object values are coerced to objects. See the
   * [ES spec](http://ecma-international.org/ecma-262/6.0/#sec-object.keys)
   * for more details.
   *
   * @static
   * @memberOf _
   * @category Object
   * @param {Object} object The object to query.
   * @returns {Array} Returns the array of property names.
   * @example
   *
   * function Foo() {
   *   this.a = 1;
   *   this.b = 2;
   * }
   *
   * Foo.prototype.c = 3;
   *
   * _.keys(new Foo);
   * // => ['a', 'b'] (iteration order is not guaranteed)
   *
   * _.keys('hi');
   * // => ['0', '1']
   */
  var keys = !nativeKeys ? shimKeys : function(object) {
    var Ctor = object == null ? undefined : object.constructor;
    if ((typeof Ctor == 'function' && Ctor.prototype === object) ||
        (typeof object != 'function' && isArrayLike(object))) {
      return shimKeys(object);
    }
    return isObject(object) ? nativeKeys(object) : [];
  };
  
  /**
   * Creates an array of the own and inherited enumerable property names of `object`.
   *
   * **Note:** Non-object values are coerced to objects.
   *
   * @static
   * @memberOf _
   * @category Object
   * @param {Object} object The object to query.
   * @returns {Array} Returns the array of property names.
   * @example
   *
   * function Foo() {
   *   this.a = 1;
   *   this.b = 2;
   * }
   *
   * Foo.prototype.c = 3;
   *
   * _.keysIn(new Foo);
   * // => ['a', 'b', 'c'] (iteration order is not guaranteed)
   */
  function keysIn(object) {
    if (object == null) {
      return [];
    }
    if (!isObject(object)) {
      object = Object(object);
    }
    var length = object.length;
    length = (length && isLength(length) &&
      (isArray(object) || isArguments(object)) && length) || 0;
  
    var Ctor = object.constructor,
        index = -1,
        isProto = typeof Ctor == 'function' && Ctor.prototype === object,
        result = Array(length),
        skipIndexes = length > 0;
  
    while (++index < length) {
      result[index] = (index + '');
    }
    for (var key in object) {
      if (!(skipIndexes && isIndex(key, length)) &&
          !(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {
        result.push(key);
      }
    }
    return result;
  }
  
  module.exports = keys;
  
  },{"lodash._getnative":58,"lodash.isarguments":61,"lodash.isarray":62}],64:[function(require,module,exports){
  (function (process){
  var path = require('path');
  var fs = require('fs');
  var _0777 = parseInt('0777', 8);
  
  module.exports = mkdirP.mkdirp = mkdirP.mkdirP = mkdirP;
  
  function mkdirP (p, opts, f, made) {
      if (typeof opts === 'function') {
          f = opts;
          opts = {};
      }
      else if (!opts || typeof opts !== 'object') {
          opts = { mode: opts };
      }
      
      var mode = opts.mode;
      var xfs = opts.fs || fs;
      
      if (mode === undefined) {
          mode = _0777 & (~process.umask());
      }
      if (!made) made = null;
      
      var cb = f || function () {};
      p = path.resolve(p);
      
      xfs.mkdir(p, mode, function (er) {
          if (!er) {
              made = made || p;
              return cb(null, made);
          }
          switch (er.code) {
              case 'ENOENT':
                  mkdirP(path.dirname(p), opts, function (er, made) {
                      if (er) cb(er, made);
                      else mkdirP(p, opts, cb, made);
                  });
                  break;
  
              // In the case of any other error, just see if there's a dir
              // there already.  If so, then hooray!  If not, then something
              // is borked.
              default:
                  xfs.stat(p, function (er2, stat) {
                      // if the stat fails, then that's super weird.
                      // let the original error be the failure reason.
                      if (er2 || !stat.isDirectory()) cb(er, made)
                      else cb(null, made);
                  });
                  break;
          }
      });
  }
  
  mkdirP.sync = function sync (p, opts, made) {
      if (!opts || typeof opts !== 'object') {
          opts = { mode: opts };
      }
      
      var mode = opts.mode;
      var xfs = opts.fs || fs;
      
      if (mode === undefined) {
          mode = _0777 & (~process.umask());
      }
      if (!made) made = null;
  
      p = path.resolve(p);
  
      try {
          xfs.mkdirSync(p, mode);
          made = made || p;
      }
      catch (err0) {
          switch (err0.code) {
              case 'ENOENT' :
                  made = sync(path.dirname(p), opts, made);
                  sync(p, opts, made);
                  break;
  
              // In the case of any other error, just see if there's a dir
              // there already.  If so, then hooray!  If not, then something
              // is borked.
              default:
                  var stat;
                  try {
                      stat = xfs.statSync(p);
                  }
                  catch (err1) {
                      throw err0;
                  }
                  if (!stat.isDirectory()) throw err0;
                  break;
          }
      }
  
      return made;
  };
  
  }).call(this,require('_process'))
  },{"_process":67,"fs":42,"path":42}],65:[function(require,module,exports){
  exports.endianness = function () { return 'LE' };
  
  exports.hostname = function () {
      if (typeof location !== 'undefined') {
          return location.hostname
      }
      else return '';
  };
  
  exports.loadavg = function () { return [] };
  
  exports.uptime = function () { return 0 };
  
  exports.freemem = function () {
      return Number.MAX_VALUE;
  };
  
  exports.totalmem = function () {
      return Number.MAX_VALUE;
  };
  
  exports.cpus = function () { return [] };
  
  exports.type = function () { return 'Browser' };
  
  exports.release = function () {
      if (typeof navigator !== 'undefined') {
          return navigator.appVersion;
      }
      return '';
  };
  
  exports.networkInterfaces
  = exports.getNetworkInterfaces
  = function () { return {} };
  
  exports.arch = function () { return 'javascript' };
  
  exports.platform = function () { return 'browser' };
  
  exports.tmpdir = exports.tmpDir = function () {
      return '/tmp';
  };
  
  exports.EOL = '\n';
  
  },{}],66:[function(require,module,exports){
  (function (process){
  'use strict';
  
  if (!process.version ||
      process.version.indexOf('v0.') === 0 ||
      process.version.indexOf('v1.') === 0 && process.version.indexOf('v1.8.') !== 0) {
    module.exports = nextTick;
  } else {
    module.exports = process.nextTick;
  }
  
  function nextTick(fn, arg1, arg2, arg3) {
    if (typeof fn !== 'function') {
      throw new TypeError('"callback" argument must be a function');
    }
    var len = arguments.length;
    var args, i;
    switch (len) {
    case 0:
    case 1:
      return process.nextTick(fn);
    case 2:
      return process.nextTick(function afterTickOne() {
        fn.call(null, arg1);
      });
    case 3:
      return process.nextTick(function afterTickTwo() {
        fn.call(null, arg1, arg2);
      });
    case 4:
      return process.nextTick(function afterTickThree() {
        fn.call(null, arg1, arg2, arg3);
      });
    default:
      args = new Array(len - 1);
      i = 0;
      while (i < args.length) {
        args[i++] = arguments[i];
      }
      return process.nextTick(function afterTick() {
        fn.apply(null, args);
      });
    }
  }
  
  }).call(this,require('_process'))
  },{"_process":67}],67:[function(require,module,exports){
  // shim for using process in browser
  var process = module.exports = {};
  
  // cached from whatever global is present so that test runners that stub it
  // don't break things.  But we need to wrap it in a try catch in case it is
  // wrapped in strict mode code which doesn't define any globals.  It's inside a
  // function because try/catches deoptimize in certain engines.
  
  var cachedSetTimeout;
  var cachedClearTimeout;
  
  function defaultSetTimout() {
      throw new Error('setTimeout has not been defined');
  }
  function defaultClearTimeout () {
      throw new Error('clearTimeout has not been defined');
  }
  (function () {
      try {
          if (typeof setTimeout === 'function') {
              cachedSetTimeout = setTimeout;
          } else {
              cachedSetTimeout = defaultSetTimout;
          }
      } catch (e) {
          cachedSetTimeout = defaultSetTimout;
      }
      try {
          if (typeof clearTimeout === 'function') {
              cachedClearTimeout = clearTimeout;
          } else {
              cachedClearTimeout = defaultClearTimeout;
          }
      } catch (e) {
          cachedClearTimeout = defaultClearTimeout;
      }
  } ())
  function runTimeout(fun) {
      if (cachedSetTimeout === setTimeout) {
          //normal enviroments in sane situations
          return setTimeout(fun, 0);
      }
      // if setTimeout wasn't available but was latter defined
      if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
          cachedSetTimeout = setTimeout;
          return setTimeout(fun, 0);
      }
      try {
          // when when somebody has screwed with setTimeout but no I.E. maddness
          return cachedSetTimeout(fun, 0);
      } catch(e){
          try {
              // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
              return cachedSetTimeout.call(null, fun, 0);
          } catch(e){
              // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
              return cachedSetTimeout.call(this, fun, 0);
          }
      }
  
  
  }
  function runClearTimeout(marker) {
      if (cachedClearTimeout === clearTimeout) {
          //normal enviroments in sane situations
          return clearTimeout(marker);
      }
      // if clearTimeout wasn't available but was latter defined
      if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
          cachedClearTimeout = clearTimeout;
          return clearTimeout(marker);
      }
      try {
          // when when somebody has screwed with setTimeout but no I.E. maddness
          return cachedClearTimeout(marker);
      } catch (e){
          try {
              // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
              return cachedClearTimeout.call(null, marker);
          } catch (e){
              // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
              // Some versions of I.E. have different rules for clearTimeout vs setTimeout
              return cachedClearTimeout.call(this, marker);
          }
      }
  
  
  
  }
  var queue = [];
  var draining = false;
  var currentQueue;
  var queueIndex = -1;
  
  function cleanUpNextTick() {
      if (!draining || !currentQueue) {
          return;
      }
      draining = false;
      if (currentQueue.length) {
          queue = currentQueue.concat(queue);
      } else {
          queueIndex = -1;
      }
      if (queue.length) {
          drainQueue();
      }
  }
  
  function drainQueue() {
      if (draining) {
          return;
      }
      var timeout = runTimeout(cleanUpNextTick);
      draining = true;
  
      var len = queue.length;
      while(len) {
          currentQueue = queue;
          queue = [];
          while (++queueIndex < len) {
              if (currentQueue) {
                  currentQueue[queueIndex].run();
              }
          }
          queueIndex = -1;
          len = queue.length;
      }
      currentQueue = null;
      draining = false;
      runClearTimeout(timeout);
  }
  
  process.nextTick = function (fun) {
      var args = new Array(arguments.length - 1);
      if (arguments.length > 1) {
          for (var i = 1; i < arguments.length; i++) {
              args[i - 1] = arguments[i];
          }
      }
      queue.push(new Item(fun, args));
      if (queue.length === 1 && !draining) {
          runTimeout(drainQueue);
      }
  };
  
  // v8 likes predictible objects
  function Item(fun, array) {
      this.fun = fun;
      this.array = array;
  }
  Item.prototype.run = function () {
      this.fun.apply(null, this.array);
  };
  process.title = 'browser';
  process.browser = true;
  process.env = {};
  process.argv = [];
  process.version = ''; // empty string to avoid regexp issues
  process.versions = {};
  
  function noop() {}
  
  process.on = noop;
  process.addListener = noop;
  process.once = noop;
  process.off = noop;
  process.removeListener = noop;
  process.removeAllListeners = noop;
  process.emit = noop;
  
  process.binding = function (name) {
      throw new Error('process.binding is not supported');
  };
  
  process.cwd = function () { return '/' };
  process.chdir = function (dir) {
      throw new Error('process.chdir is not supported');
  };
  process.umask = function() { return 0; };
  
  },{}],68:[function(require,module,exports){
  module.exports = require("./lib/_stream_duplex.js")
  
  },{"./lib/_stream_duplex.js":69}],69:[function(require,module,exports){
  // a duplex stream is just a stream that is both readable and writable.
  // Since JS doesn't have multiple prototypal inheritance, this class
  // prototypally inherits from Readable, and then parasitically from
  // Writable.
  
  'use strict';
  
  /*<replacement>*/
  
  var objectKeys = Object.keys || function (obj) {
    var keys = [];
    for (var key in obj) {
      keys.push(key);
    }return keys;
  };
  /*</replacement>*/
  
  module.exports = Duplex;
  
  /*<replacement>*/
  var processNextTick = require('process-nextick-args');
  /*</replacement>*/
  
  /*<replacement>*/
  var util = require('core-util-is');
  util.inherits = require('inherits');
  /*</replacement>*/
  
  var Readable = require('./_stream_readable');
  var Writable = require('./_stream_writable');
  
  util.inherits(Duplex, Readable);
  
  var keys = objectKeys(Writable.prototype);
  for (var v = 0; v < keys.length; v++) {
    var method = keys[v];
    if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method];
  }
  
  function Duplex(options) {
    if (!(this instanceof Duplex)) return new Duplex(options);
  
    Readable.call(this, options);
    Writable.call(this, options);
  
    if (options && options.readable === false) this.readable = false;
  
    if (options && options.writable === false) this.writable = false;
  
    this.allowHalfOpen = true;
    if (options && options.allowHalfOpen === false) this.allowHalfOpen = false;
  
    this.once('end', onend);
  }
  
  // the no-half-open enforcer
  function onend() {
    // if we allow half-open state, or if the writable side ended,
    // then we're ok.
    if (this.allowHalfOpen || this._writableState.ended) return;
  
    // no more data can be written.
    // But allow more writes to happen in this tick.
    processNextTick(onEndNT, this);
  }
  
  function onEndNT(self) {
    self.end();
  }
  
  function forEach(xs, f) {
    for (var i = 0, l = xs.length; i < l; i++) {
      f(xs[i], i);
    }
  }
  },{"./_stream_readable":71,"./_stream_writable":73,"core-util-is":45,"inherits":51,"process-nextick-args":66}],70:[function(require,module,exports){
  // a passthrough stream.
  // basically just the most minimal sort of Transform stream.
  // Every written chunk gets output as-is.
  
  'use strict';
  
  module.exports = PassThrough;
  
  var Transform = require('./_stream_transform');
  
  /*<replacement>*/
  var util = require('core-util-is');
  util.inherits = require('inherits');
  /*</replacement>*/
  
  util.inherits(PassThrough, Transform);
  
  function PassThrough(options) {
    if (!(this instanceof PassThrough)) return new PassThrough(options);
  
    Transform.call(this, options);
  }
  
  PassThrough.prototype._transform = function (chunk, encoding, cb) {
    cb(null, chunk);
  };
  },{"./_stream_transform":72,"core-util-is":45,"inherits":51}],71:[function(require,module,exports){
  (function (process){
  'use strict';
  
  module.exports = Readable;
  
  /*<replacement>*/
  var processNextTick = require('process-nextick-args');
  /*</replacement>*/
  
  /*<replacement>*/
  var isArray = require('isarray');
  /*</replacement>*/
  
  Readable.ReadableState = ReadableState;
  
  /*<replacement>*/
  var EE = require('events').EventEmitter;
  
  var EElistenerCount = function (emitter, type) {
    return emitter.listeners(type).length;
  };
  /*</replacement>*/
  
  /*<replacement>*/
  var Stream;
  (function () {
    try {
      Stream = require('st' + 'ream');
    } catch (_) {} finally {
      if (!Stream) Stream = require('events').EventEmitter;
    }
  })();
  /*</replacement>*/
  
  var Buffer = require('buffer').Buffer;
  /*<replacement>*/
  var bufferShim = require('buffer-shims');
  /*</replacement>*/
  
  /*<replacement>*/
  var util = require('core-util-is');
  util.inherits = require('inherits');
  /*</replacement>*/
  
  /*<replacement>*/
  var debugUtil = require('util');
  var debug = void 0;
  if (debugUtil && debugUtil.debuglog) {
    debug = debugUtil.debuglog('stream');
  } else {
    debug = function () {};
  }
  /*</replacement>*/
  
  var BufferList = require('./internal/streams/BufferList');
  var StringDecoder;
  
  util.inherits(Readable, Stream);
  
  function prependListener(emitter, event, fn) {
    if (typeof emitter.prependListener === 'function') {
      return emitter.prependListener(event, fn);
    } else {
      // This is a hack to make sure that our error handler is attached before any
      // userland ones.  NEVER DO THIS. This is here only because this code needs
      // to continue to work with older versions of Node.js that do not include
      // the prependListener() method. The goal is to eventually remove this hack.
      if (!emitter._events || !emitter._events[event]) emitter.on(event, fn);else if (isArray(emitter._events[event])) emitter._events[event].unshift(fn);else emitter._events[event] = [fn, emitter._events[event]];
    }
  }
  
  var Duplex;
  function ReadableState(options, stream) {
    Duplex = Duplex || require('./_stream_duplex');
  
    options = options || {};
  
    // object stream flag. Used to make read(n) ignore n and to
    // make all the buffer merging and length checks go away
    this.objectMode = !!options.objectMode;
  
    if (stream instanceof Duplex) this.objectMode = this.objectMode || !!options.readableObjectMode;
  
    // the point at which it stops calling _read() to fill the buffer
    // Note: 0 is a valid value, means "don't call _read preemptively ever"
    var hwm = options.highWaterMark;
    var defaultHwm = this.objectMode ? 16 : 16 * 1024;
    this.highWaterMark = hwm || hwm === 0 ? hwm : defaultHwm;
  
    // cast to ints.
    this.highWaterMark = ~ ~this.highWaterMark;
  
    // A linked list is used to store data chunks instead of an array because the
    // linked list can remove elements from the beginning faster than
    // array.shift()
    this.buffer = new BufferList();
    this.length = 0;
    this.pipes = null;
    this.pipesCount = 0;
    this.flowing = null;
    this.ended = false;
    this.endEmitted = false;
    this.reading = false;
  
    // a flag to be able to tell if the onwrite cb is called immediately,
    // or on a later tick.  We set this to true at first, because any
    // actions that shouldn't happen until "later" should generally also
    // not happen before the first write call.
    this.sync = true;
  
    // whenever we return null, then we set a flag to say
    // that we're awaiting a 'readable' event emission.
    this.needReadable = false;
    this.emittedReadable = false;
    this.readableListening = false;
    this.resumeScheduled = false;
  
    // Crypto is kind of old and crusty.  Historically, its default string
    // encoding is 'binary' so we have to make this configurable.
    // Everything else in the universe uses 'utf8', though.
    this.defaultEncoding = options.defaultEncoding || 'utf8';
  
    // when piping, we only care about 'readable' events that happen
    // after read()ing all the bytes and not getting any pushback.
    this.ranOut = false;
  
    // the number of writers that are awaiting a drain event in .pipe()s
    this.awaitDrain = 0;
  
    // if true, a maybeReadMore has been scheduled
    this.readingMore = false;
  
    this.decoder = null;
    this.encoding = null;
    if (options.encoding) {
      if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
      this.decoder = new StringDecoder(options.encoding);
      this.encoding = options.encoding;
    }
  }
  
  var Duplex;
  function Readable(options) {
    Duplex = Duplex || require('./_stream_duplex');
  
    if (!(this instanceof Readable)) return new Readable(options);
  
    this._readableState = new ReadableState(options, this);
  
    // legacy
    this.readable = true;
  
    if (options && typeof options.read === 'function') this._read = options.read;
  
    Stream.call(this);
  }
  
  // Manually shove something into the read() buffer.
  // This returns true if the highWaterMark has not been hit yet,
  // similar to how Writable.write() returns true if you should
  // write() some more.
  Readable.prototype.push = function (chunk, encoding) {
    var state = this._readableState;
  
    if (!state.objectMode && typeof chunk === 'string') {
      encoding = encoding || state.defaultEncoding;
      if (encoding !== state.encoding) {
        chunk = bufferShim.from(chunk, encoding);
        encoding = '';
      }
    }
  
    return readableAddChunk(this, state, chunk, encoding, false);
  };
  
  // Unshift should *always* be something directly out of read()
  Readable.prototype.unshift = function (chunk) {
    var state = this._readableState;
    return readableAddChunk(this, state, chunk, '', true);
  };
  
  Readable.prototype.isPaused = function () {
    return this._readableState.flowing === false;
  };
  
  function readableAddChunk(stream, state, chunk, encoding, addToFront) {
    var er = chunkInvalid(state, chunk);
    if (er) {
      stream.emit('error', er);
    } else if (chunk === null) {
      state.reading = false;
      onEofChunk(stream, state);
    } else if (state.objectMode || chunk && chunk.length > 0) {
      if (state.ended && !addToFront) {
        var e = new Error('stream.push() after EOF');
        stream.emit('error', e);
      } else if (state.endEmitted && addToFront) {
        var _e = new Error('stream.unshift() after end event');
        stream.emit('error', _e);
      } else {
        var skipAdd;
        if (state.decoder && !addToFront && !encoding) {
          chunk = state.decoder.write(chunk);
          skipAdd = !state.objectMode && chunk.length === 0;
        }
  
        if (!addToFront) state.reading = false;
  
        // Don't add to the buffer if we've decoded to an empty string chunk and
        // we're not in object mode
        if (!skipAdd) {
          // if we want the data now, just emit it.
          if (state.flowing && state.length === 0 && !state.sync) {
            stream.emit('data', chunk);
            stream.read(0);
          } else {
            // update the buffer info.
            state.length += state.objectMode ? 1 : chunk.length;
            if (addToFront) state.buffer.unshift(chunk);else state.buffer.push(chunk);
  
            if (state.needReadable) emitReadable(stream);
          }
        }
  
        maybeReadMore(stream, state);
      }
    } else if (!addToFront) {
      state.reading = false;
    }
  
    return needMoreData(state);
  }
  
  // if it's past the high water mark, we can push in some more.
  // Also, if we have no data yet, we can stand some
  // more bytes.  This is to work around cases where hwm=0,
  // such as the repl.  Also, if the push() triggered a
  // readable event, and the user called read(largeNumber) such that
  // needReadable was set, then we ought to push more, so that another
  // 'readable' event will be triggered.
  function needMoreData(state) {
    return !state.ended && (state.needReadable || state.length < state.highWaterMark || state.length === 0);
  }
  
  // backwards compatibility.
  Readable.prototype.setEncoding = function (enc) {
    if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
    this._readableState.decoder = new StringDecoder(enc);
    this._readableState.encoding = enc;
    return this;
  };
  
  // Don't raise the hwm > 8MB
  var MAX_HWM = 0x800000;
  function computeNewHighWaterMark(n) {
    if (n >= MAX_HWM) {
      n = MAX_HWM;
    } else {
      // Get the next highest power of 2 to prevent increasing hwm excessively in
      // tiny amounts
      n--;
      n |= n >>> 1;
      n |= n >>> 2;
      n |= n >>> 4;
      n |= n >>> 8;
      n |= n >>> 16;
      n++;
    }
    return n;
  }
  
  // This function is designed to be inlinable, so please take care when making
  // changes to the function body.
  function howMuchToRead(n, state) {
    if (n <= 0 || state.length === 0 && state.ended) return 0;
    if (state.objectMode) return 1;
    if (n !== n) {
      // Only flow one buffer at a time
      if (state.flowing && state.length) return state.buffer.head.data.length;else return state.length;
    }
    // If we're asking for more than the current hwm, then raise the hwm.
    if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n);
    if (n <= state.length) return n;
    // Don't have enough
    if (!state.ended) {
      state.needReadable = true;
      return 0;
    }
    return state.length;
  }
  
  // you can override either this method, or the async _read(n) below.
  Readable.prototype.read = function (n) {
    debug('read', n);
    n = parseInt(n, 10);
    var state = this._readableState;
    var nOrig = n;
  
    if (n !== 0) state.emittedReadable = false;
  
    // if we're doing read(0) to trigger a readable event, but we
    // already have a bunch of data in the buffer, then just trigger
    // the 'readable' event and move on.
    if (n === 0 && state.needReadable && (state.length >= state.highWaterMark || state.ended)) {
      debug('read: emitReadable', state.length, state.ended);
      if (state.length === 0 && state.ended) endReadable(this);else emitReadable(this);
      return null;
    }
  
    n = howMuchToRead(n, state);
  
    // if we've ended, and we're now clear, then finish it up.
    if (n === 0 && state.ended) {
      if (state.length === 0) endReadable(this);
      return null;
    }
  
    // All the actual chunk generation logic needs to be
    // *below* the call to _read.  The reason is that in certain
    // synthetic stream cases, such as passthrough streams, _read
    // may be a completely synchronous operation which may change
    // the state of the read buffer, providing enough data when
    // before there was *not* enough.
    //
    // So, the steps are:
    // 1. Figure out what the state of things will be after we do
    // a read from the buffer.
    //
    // 2. If that resulting state will trigger a _read, then call _read.
    // Note that this may be asynchronous, or synchronous.  Yes, it is
    // deeply ugly to write APIs this way, but that still doesn't mean
    // that the Readable class should behave improperly, as streams are
    // designed to be sync/async agnostic.
    // Take note if the _read call is sync or async (ie, if the read call
    // has returned yet), so that we know whether or not it's safe to emit
    // 'readable' etc.
    //
    // 3. Actually pull the requested chunks out of the buffer and return.
  
    // if we need a readable event, then we need to do some reading.
    var doRead = state.needReadable;
    debug('need readable', doRead);
  
    // if we currently have less than the highWaterMark, then also read some
    if (state.length === 0 || state.length - n < state.highWaterMark) {
      doRead = true;
      debug('length less than watermark', doRead);
    }
  
    // however, if we've ended, then there's no point, and if we're already
    // reading, then it's unnecessary.
    if (state.ended || state.reading) {
      doRead = false;
      debug('reading or ended', doRead);
    } else if (doRead) {
      debug('do read');
      state.reading = true;
      state.sync = true;
      // if the length is currently zero, then we *need* a readable event.
      if (state.length === 0) state.needReadable = true;
      // call internal read method
      this._read(state.highWaterMark);
      state.sync = false;
      // If _read pushed data synchronously, then `reading` will be false,
      // and we need to re-evaluate how much data we can return to the user.
      if (!state.reading) n = howMuchToRead(nOrig, state);
    }
  
    var ret;
    if (n > 0) ret = fromList(n, state);else ret = null;
  
    if (ret === null) {
      state.needReadable = true;
      n = 0;
    } else {
      state.length -= n;
    }
  
    if (state.length === 0) {
      // If we have nothing in the buffer, then we want to know
      // as soon as we *do* get something into the buffer.
      if (!state.ended) state.needReadable = true;
  
      // If we tried to read() past the EOF, then emit end on the next tick.
      if (nOrig !== n && state.ended) endReadable(this);
    }
  
    if (ret !== null) this.emit('data', ret);
  
    return ret;
  };
  
  function chunkInvalid(state, chunk) {
    var er = null;
    if (!Buffer.isBuffer(chunk) && typeof chunk !== 'string' && chunk !== null && chunk !== undefined && !state.objectMode) {
      er = new TypeError('Invalid non-string/buffer chunk');
    }
    return er;
  }
  
  function onEofChunk(stream, state) {
    if (state.ended) return;
    if (state.decoder) {
      var chunk = state.decoder.end();
      if (chunk && chunk.length) {
        state.buffer.push(chunk);
        state.length += state.objectMode ? 1 : chunk.length;
      }
    }
    state.ended = true;
  
    // emit 'readable' now to make sure it gets picked up.
    emitReadable(stream);
  }
  
  // Don't emit readable right away in sync mode, because this can trigger
  // another read() call => stack overflow.  This way, it might trigger
  // a nextTick recursion warning, but that's not so bad.
  function emitReadable(stream) {
    var state = stream._readableState;
    state.needReadable = false;
    if (!state.emittedReadable) {
      debug('emitReadable', state.flowing);
      state.emittedReadable = true;
      if (state.sync) processNextTick(emitReadable_, stream);else emitReadable_(stream);
    }
  }
  
  function emitReadable_(stream) {
    debug('emit readable');
    stream.emit('readable');
    flow(stream);
  }
  
  // at this point, the user has presumably seen the 'readable' event,
  // and called read() to consume some data.  that may have triggered
  // in turn another _read(n) call, in which case reading = true if
  // it's in progress.
  // However, if we're not ended, or reading, and the length < hwm,
  // then go ahead and try to read some more preemptively.
  function maybeReadMore(stream, state) {
    if (!state.readingMore) {
      state.readingMore = true;
      processNextTick(maybeReadMore_, stream, state);
    }
  }
  
  function maybeReadMore_(stream, state) {
    var len = state.length;
    while (!state.reading && !state.flowing && !state.ended && state.length < state.highWaterMark) {
      debug('maybeReadMore read 0');
      stream.read(0);
      if (len === state.length)
        // didn't get any data, stop spinning.
        break;else len = state.length;
    }
    state.readingMore = false;
  }
  
  // abstract method.  to be overridden in specific implementation classes.
  // call cb(er, data) where data is <= n in length.
  // for virtual (non-string, non-buffer) streams, "length" is somewhat
  // arbitrary, and perhaps not very meaningful.
  Readable.prototype._read = function (n) {
    this.emit('error', new Error('not implemented'));
  };
  
  Readable.prototype.pipe = function (dest, pipeOpts) {
    var src = this;
    var state = this._readableState;
  
    switch (state.pipesCount) {
      case 0:
        state.pipes = dest;
        break;
      case 1:
        state.pipes = [state.pipes, dest];
        break;
      default:
        state.pipes.push(dest);
        break;
    }
    state.pipesCount += 1;
    debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts);
  
    var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr;
  
    var endFn = doEnd ? onend : cleanup;
    if (state.endEmitted) processNextTick(endFn);else src.once('end', endFn);
  
    dest.on('unpipe', onunpipe);
    function onunpipe(readable) {
      debug('onunpipe');
      if (readable === src) {
        cleanup();
      }
    }
  
    function onend() {
      debug('onend');
      dest.end();
    }
  
    // when the dest drains, it reduces the awaitDrain counter
    // on the source.  This would be more elegant with a .once()
    // handler in flow(), but adding and removing repeatedly is
    // too slow.
    var ondrain = pipeOnDrain(src);
    dest.on('drain', ondrain);
  
    var cleanedUp = false;
    function cleanup() {
      debug('cleanup');
      // cleanup event handlers once the pipe is broken
      dest.removeListener('close', onclose);
      dest.removeListener('finish', onfinish);
      dest.removeListener('drain', ondrain);
      dest.removeListener('error', onerror);
      dest.removeListener('unpipe', onunpipe);
      src.removeListener('end', onend);
      src.removeListener('end', cleanup);
      src.removeListener('data', ondata);
  
      cleanedUp = true;
  
      // if the reader is waiting for a drain event from this
      // specific writer, then it would cause it to never start
      // flowing again.
      // So, if this is awaiting a drain, then we just call it now.
      // If we don't know, then assume that we are waiting for one.
      if (state.awaitDrain && (!dest._writableState || dest._writableState.needDrain)) ondrain();
    }
  
    // If the user pushes more data while we're writing to dest then we'll end up
    // in ondata again. However, we only want to increase awaitDrain once because
    // dest will only emit one 'drain' event for the multiple writes.
    // => Introduce a guard on increasing awaitDrain.
    var increasedAwaitDrain = false;
    src.on('data', ondata);
    function ondata(chunk) {
      debug('ondata');
      increasedAwaitDrain = false;
      var ret = dest.write(chunk);
      if (false === ret && !increasedAwaitDrain) {
        // If the user unpiped during `dest.write()`, it is possible
        // to get stuck in a permanently paused state if that write
        // also returned false.
        // => Check whether `dest` is still a piping destination.
        if ((state.pipesCount === 1 && state.pipes === dest || state.pipesCount > 1 && indexOf(state.pipes, dest) !== -1) && !cleanedUp) {
          debug('false write response, pause', src._readableState.awaitDrain);
          src._readableState.awaitDrain++;
          increasedAwaitDrain = true;
        }
        src.pause();
      }
    }
  
    // if the dest has an error, then stop piping into it.
    // however, don't suppress the throwing behavior for this.
    function onerror(er) {
      debug('onerror', er);
      unpipe();
      dest.removeListener('error', onerror);
      if (EElistenerCount(dest, 'error') === 0) dest.emit('error', er);
    }
  
    // Make sure our error handler is attached before userland ones.
    prependListener(dest, 'error', onerror);
  
    // Both close and finish should trigger unpipe, but only once.
    function onclose() {
      dest.removeListener('finish', onfinish);
      unpipe();
    }
    dest.once('close', onclose);
    function onfinish() {
      debug('onfinish');
      dest.removeListener('close', onclose);
      unpipe();
    }
    dest.once('finish', onfinish);
  
    function unpipe() {
      debug('unpipe');
      src.unpipe(dest);
    }
  
    // tell the dest that it's being piped to
    dest.emit('pipe', src);
  
    // start the flow if it hasn't been started already.
    if (!state.flowing) {
      debug('pipe resume');
      src.resume();
    }
  
    return dest;
  };
  
  function pipeOnDrain(src) {
    return function () {
      var state = src._readableState;
      debug('pipeOnDrain', state.awaitDrain);
      if (state.awaitDrain) state.awaitDrain--;
      if (state.awaitDrain === 0 && EElistenerCount(src, 'data')) {
        state.flowing = true;
        flow(src);
      }
    };
  }
  
  Readable.prototype.unpipe = function (dest) {
    var state = this._readableState;
  
    // if we're not piping anywhere, then do nothing.
    if (state.pipesCount === 0) return this;
  
    // just one destination.  most common case.
    if (state.pipesCount === 1) {
      // passed in one, but it's not the right one.
      if (dest && dest !== state.pipes) return this;
  
      if (!dest) dest = state.pipes;
  
      // got a match.
      state.pipes = null;
      state.pipesCount = 0;
      state.flowing = false;
      if (dest) dest.emit('unpipe', this);
      return this;
    }
  
    // slow case. multiple pipe destinations.
  
    if (!dest) {
      // remove all.
      var dests = state.pipes;
      var len = state.pipesCount;
      state.pipes = null;
      state.pipesCount = 0;
      state.flowing = false;
  
      for (var _i = 0; _i < len; _i++) {
        dests[_i].emit('unpipe', this);
      }return this;
    }
  
    // try to find the right one.
    var i = indexOf(state.pipes, dest);
    if (i === -1) return this;
  
    state.pipes.splice(i, 1);
    state.pipesCount -= 1;
    if (state.pipesCount === 1) state.pipes = state.pipes[0];
  
    dest.emit('unpipe', this);
  
    return this;
  };
  
  // set up data events if they are asked for
  // Ensure readable listeners eventually get something
  Readable.prototype.on = function (ev, fn) {
    var res = Stream.prototype.on.call(this, ev, fn);
  
    if (ev === 'data') {
      // Start flowing on next tick if stream isn't explicitly paused
      if (this._readableState.flowing !== false) this.resume();
    } else if (ev === 'readable') {
      var state = this._readableState;
      if (!state.endEmitted && !state.readableListening) {
        state.readableListening = state.needReadable = true;
        state.emittedReadable = false;
        if (!state.reading) {
          processNextTick(nReadingNextTick, this);
        } else if (state.length) {
          emitReadable(this, state);
        }
      }
    }
  
    return res;
  };
  Readable.prototype.addListener = Readable.prototype.on;
  
  function nReadingNextTick(self) {
    debug('readable nexttick read 0');
    self.read(0);
  }
  
  // pause() and resume() are remnants of the legacy readable stream API
  // If the user uses them, then switch into old mode.
  Readable.prototype.resume = function () {
    var state = this._readableState;
    if (!state.flowing) {
      debug('resume');
      state.flowing = true;
      resume(this, state);
    }
    return this;
  };
  
  function resume(stream, state) {
    if (!state.resumeScheduled) {
      state.resumeScheduled = true;
      processNextTick(resume_, stream, state);
    }
  }
  
  function resume_(stream, state) {
    if (!state.reading) {
      debug('resume read 0');
      stream.read(0);
    }
  
    state.resumeScheduled = false;
    state.awaitDrain = 0;
    stream.emit('resume');
    flow(stream);
    if (state.flowing && !state.reading) stream.read(0);
  }
  
  Readable.prototype.pause = function () {
    debug('call pause flowing=%j', this._readableState.flowing);
    if (false !== this._readableState.flowing) {
      debug('pause');
      this._readableState.flowing = false;
      this.emit('pause');
    }
    return this;
  };
  
  function flow(stream) {
    var state = stream._readableState;
    debug('flow', state.flowing);
    while (state.flowing && stream.read() !== null) {}
  }
  
  // wrap an old-style stream as the async data source.
  // This is *not* part of the readable stream interface.
  // It is an ugly unfortunate mess of history.
  Readable.prototype.wrap = function (stream) {
    var state = this._readableState;
    var paused = false;
  
    var self = this;
    stream.on('end', function () {
      debug('wrapped end');
      if (state.decoder && !state.ended) {
        var chunk = state.decoder.end();
        if (chunk && chunk.length) self.push(chunk);
      }
  
      self.push(null);
    });
  
    stream.on('data', function (chunk) {
      debug('wrapped data');
      if (state.decoder) chunk = state.decoder.write(chunk);
  
      // don't skip over falsy values in objectMode
      if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return;
  
      var ret = self.push(chunk);
      if (!ret) {
        paused = true;
        stream.pause();
      }
    });
  
    // proxy all the other methods.
    // important when wrapping filters and duplexes.
    for (var i in stream) {
      if (this[i] === undefined && typeof stream[i] === 'function') {
        this[i] = function (method) {
          return function () {
            return stream[method].apply(stream, arguments);
          };
        }(i);
      }
    }
  
    // proxy certain important events.
    var events = ['error', 'close', 'destroy', 'pause', 'resume'];
    forEach(events, function (ev) {
      stream.on(ev, self.emit.bind(self, ev));
    });
  
    // when we try to consume some more bytes, simply unpause the
    // underlying stream.
    self._read = function (n) {
      debug('wrapped _read', n);
      if (paused) {
        paused = false;
        stream.resume();
      }
    };
  
    return self;
  };
  
  // exposed for testing purposes only.
  Readable._fromList = fromList;
  
  // Pluck off n bytes from an array of buffers.
  // Length is the combined lengths of all the buffers in the list.
  // This function is designed to be inlinable, so please take care when making
  // changes to the function body.
  function fromList(n, state) {
    // nothing buffered
    if (state.length === 0) return null;
  
    var ret;
    if (state.objectMode) ret = state.buffer.shift();else if (!n || n >= state.length) {
      // read it all, truncate the list
      if (state.decoder) ret = state.buffer.join('');else if (state.buffer.length === 1) ret = state.buffer.head.data;else ret = state.buffer.concat(state.length);
      state.buffer.clear();
    } else {
      // read part of list
      ret = fromListPartial(n, state.buffer, state.decoder);
    }
  
    return ret;
  }
  
  // Extracts only enough buffered data to satisfy the amount requested.
  // This function is designed to be inlinable, so please take care when making
  // changes to the function body.
  function fromListPartial(n, list, hasStrings) {
    var ret;
    if (n < list.head.data.length) {
      // slice is the same for buffers and strings
      ret = list.head.data.slice(0, n);
      list.head.data = list.head.data.slice(n);
    } else if (n === list.head.data.length) {
      // first chunk is a perfect match
      ret = list.shift();
    } else {
      // result spans more than one buffer
      ret = hasStrings ? copyFromBufferString(n, list) : copyFromBuffer(n, list);
    }
    return ret;
  }
  
  // Copies a specified amount of characters from the list of buffered data
  // chunks.
  // This function is designed to be inlinable, so please take care when making
  // changes to the function body.
  function copyFromBufferString(n, list) {
    var p = list.head;
    var c = 1;
    var ret = p.data;
    n -= ret.length;
    while (p = p.next) {
      var str = p.data;
      var nb = n > str.length ? str.length : n;
      if (nb === str.length) ret += str;else ret += str.slice(0, n);
      n -= nb;
      if (n === 0) {
        if (nb === str.length) {
          ++c;
          if (p.next) list.head = p.next;else list.head = list.tail = null;
        } else {
          list.head = p;
          p.data = str.slice(nb);
        }
        break;
      }
      ++c;
    }
    list.length -= c;
    return ret;
  }
  
  // Copies a specified amount of bytes from the list of buffered data chunks.
  // This function is designed to be inlinable, so please take care when making
  // changes to the function body.
  function copyFromBuffer(n, list) {
    var ret = bufferShim.allocUnsafe(n);
    var p = list.head;
    var c = 1;
    p.data.copy(ret);
    n -= p.data.length;
    while (p = p.next) {
      var buf = p.data;
      var nb = n > buf.length ? buf.length : n;
      buf.copy(ret, ret.length - n, 0, nb);
      n -= nb;
      if (n === 0) {
        if (nb === buf.length) {
          ++c;
          if (p.next) list.head = p.next;else list.head = list.tail = null;
        } else {
          list.head = p;
          p.data = buf.slice(nb);
        }
        break;
      }
      ++c;
    }
    list.length -= c;
    return ret;
  }
  
  function endReadable(stream) {
    var state = stream._readableState;
  
    // If we get here before consuming all the bytes, then that is a
    // bug in node.  Should never happen.
    if (state.length > 0) throw new Error('"endReadable()" called on non-empty stream');
  
    if (!state.endEmitted) {
      state.ended = true;
      processNextTick(endReadableNT, state, stream);
    }
  }
  
  function endReadableNT(state, stream) {
    // Check that we didn't get one last unshift.
    if (!state.endEmitted && state.length === 0) {
      state.endEmitted = true;
      stream.readable = false;
      stream.emit('end');
    }
  }
  
  function forEach(xs, f) {
    for (var i = 0, l = xs.length; i < l; i++) {
      f(xs[i], i);
    }
  }
  
  function indexOf(xs, x) {
    for (var i = 0, l = xs.length; i < l; i++) {
      if (xs[i] === x) return i;
    }
    return -1;
  }
  }).call(this,require('_process'))
  },{"./_stream_duplex":69,"./internal/streams/BufferList":74,"_process":67,"buffer":44,"buffer-shims":43,"core-util-is":45,"events":48,"inherits":51,"isarray":53,"process-nextick-args":66,"string_decoder/":80,"util":40}],72:[function(require,module,exports){
  // a transform stream is a readable/writable stream where you do
  // something with the data.  Sometimes it's called a "filter",
  // but that's not a great name for it, since that implies a thing where
  // some bits pass through, and others are simply ignored.  (That would
  // be a valid example of a transform, of course.)
  //
  // While the output is causally related to the input, it's not a
  // necessarily symmetric or synchronous transformation.  For example,
  // a zlib stream might take multiple plain-text writes(), and then
  // emit a single compressed chunk some time in the future.
  //
  // Here's how this works:
  //
  // The Transform stream has all the aspects of the readable and writable
  // stream classes.  When you write(chunk), that calls _write(chunk,cb)
  // internally, and returns false if there's a lot of pending writes
  // buffered up.  When you call read(), that calls _read(n) until
  // there's enough pending readable data buffered up.
  //
  // In a transform stream, the written data is placed in a buffer.  When
  // _read(n) is called, it transforms the queued up data, calling the
  // buffered _write cb's as it consumes chunks.  If consuming a single
  // written chunk would result in multiple output chunks, then the first
  // outputted bit calls the readcb, and subsequent chunks just go into
  // the read buffer, and will cause it to emit 'readable' if necessary.
  //
  // This way, back-pressure is actually determined by the reading side,
  // since _read has to be called to start processing a new chunk.  However,
  // a pathological inflate type of transform can cause excessive buffering
  // here.  For example, imagine a stream where every byte of input is
  // interpreted as an integer from 0-255, and then results in that many
  // bytes of output.  Writing the 4 bytes {ff,ff,ff,ff} would result in
  // 1kb of data being output.  In this case, you could write a very small
  // amount of input, and end up with a very large amount of output.  In
  // such a pathological inflating mechanism, there'd be no way to tell
  // the system to stop doing the transform.  A single 4MB write could
  // cause the system to run out of memory.
  //
  // However, even in such a pathological case, only a single written chunk
  // would be consumed, and then the rest would wait (un-transformed) until
  // the results of the previous transformed chunk were consumed.
  
  'use strict';
  
  module.exports = Transform;
  
  var Duplex = require('./_stream_duplex');
  
  /*<replacement>*/
  var util = require('core-util-is');
  util.inherits = require('inherits');
  /*</replacement>*/
  
  util.inherits(Transform, Duplex);
  
  function TransformState(stream) {
    this.afterTransform = function (er, data) {
      return afterTransform(stream, er, data);
    };
  
    this.needTransform = false;
    this.transforming = false;
    this.writecb = null;
    this.writechunk = null;
    this.writeencoding = null;
  }
  
  function afterTransform(stream, er, data) {
    var ts = stream._transformState;
    ts.transforming = false;
  
    var cb = ts.writecb;
  
    if (!cb) return stream.emit('error', new Error('no writecb in Transform class'));
  
    ts.writechunk = null;
    ts.writecb = null;
  
    if (data !== null && data !== undefined) stream.push(data);
  
    cb(er);
  
    var rs = stream._readableState;
    rs.reading = false;
    if (rs.needReadable || rs.length < rs.highWaterMark) {
      stream._read(rs.highWaterMark);
    }
  }
  
  function Transform(options) {
    if (!(this instanceof Transform)) return new Transform(options);
  
    Duplex.call(this, options);
  
    this._transformState = new TransformState(this);
  
    // when the writable side finishes, then flush out anything remaining.
    var stream = this;
  
    // start out asking for a readable event once data is transformed.
    this._readableState.needReadable = true;
  
    // we have implemented the _read method, and done the other things
    // that Readable wants before the first _read call, so unset the
    // sync guard flag.
    this._readableState.sync = false;
  
    if (options) {
      if (typeof options.transform === 'function') this._transform = options.transform;
  
      if (typeof options.flush === 'function') this._flush = options.flush;
    }
  
    this.once('prefinish', function () {
      if (typeof this._flush === 'function') this._flush(function (er) {
        done(stream, er);
      });else done(stream);
    });
  }
  
  Transform.prototype.push = function (chunk, encoding) {
    this._transformState.needTransform = false;
    return Duplex.prototype.push.call(this, chunk, encoding);
  };
  
  // This is the part where you do stuff!
  // override this function in implementation classes.
  // 'chunk' is an input chunk.
  //
  // Call `push(newChunk)` to pass along transformed output
  // to the readable side.  You may call 'push' zero or more times.
  //
  // Call `cb(err)` when you are done with this chunk.  If you pass
  // an error, then that'll put the hurt on the whole operation.  If you
  // never call cb(), then you'll never get another chunk.
  Transform.prototype._transform = function (chunk, encoding, cb) {
    throw new Error('Not implemented');
  };
  
  Transform.prototype._write = function (chunk, encoding, cb) {
    var ts = this._transformState;
    ts.writecb = cb;
    ts.writechunk = chunk;
    ts.writeencoding = encoding;
    if (!ts.transforming) {
      var rs = this._readableState;
      if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark);
    }
  };
  
  // Doesn't matter what the args are here.
  // _transform does all the work.
  // That we got here means that the readable side wants more data.
  Transform.prototype._read = function (n) {
    var ts = this._transformState;
  
    if (ts.writechunk !== null && ts.writecb && !ts.transforming) {
      ts.transforming = true;
      this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
    } else {
      // mark that we need a transform, so that any data that comes in
      // will get processed, now that we've asked for it.
      ts.needTransform = true;
    }
  };
  
  function done(stream, er) {
    if (er) return stream.emit('error', er);
  
    // if there's nothing in the write buffer, then that means
    // that nothing more will ever be provided
    var ws = stream._writableState;
    var ts = stream._transformState;
  
    if (ws.length) throw new Error('Calling transform done when ws.length != 0');
  
    if (ts.transforming) throw new Error('Calling transform done when still transforming');
  
    return stream.push(null);
  }
  },{"./_stream_duplex":69,"core-util-is":45,"inherits":51}],73:[function(require,module,exports){
  (function (process){
  // A bit simpler than readable streams.
  // Implement an async ._write(chunk, encoding, cb), and it'll handle all
  // the drain event emission and buffering.
  
  'use strict';
  
  module.exports = Writable;
  
  /*<replacement>*/
  var processNextTick = require('process-nextick-args');
  /*</replacement>*/
  
  /*<replacement>*/
  var asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : processNextTick;
  /*</replacement>*/
  
  Writable.WritableState = WritableState;
  
  /*<replacement>*/
  var util = require('core-util-is');
  util.inherits = require('inherits');
  /*</replacement>*/
  
  /*<replacement>*/
  var internalUtil = {
    deprecate: require('util-deprecate')
  };
  /*</replacement>*/
  
  /*<replacement>*/
  var Stream;
  (function () {
    try {
      Stream = require('st' + 'ream');
    } catch (_) {} finally {
      if (!Stream) Stream = require('events').EventEmitter;
    }
  })();
  /*</replacement>*/
  
  var Buffer = require('buffer').Buffer;
  /*<replacement>*/
  var bufferShim = require('buffer-shims');
  /*</replacement>*/
  
  util.inherits(Writable, Stream);
  
  function nop() {}
  
  function WriteReq(chunk, encoding, cb) {
    this.chunk = chunk;
    this.encoding = encoding;
    this.callback = cb;
    this.next = null;
  }
  
  var Duplex;
  function WritableState(options, stream) {
    Duplex = Duplex || require('./_stream_duplex');
  
    options = options || {};
  
    // object stream flag to indicate whether or not this stream
    // contains buffers or objects.
    this.objectMode = !!options.objectMode;
  
    if (stream instanceof Duplex) this.objectMode = this.objectMode || !!options.writableObjectMode;
  
    // the point at which write() starts returning false
    // Note: 0 is a valid value, means that we always return false if
    // the entire buffer is not flushed immediately on write()
    var hwm = options.highWaterMark;
    var defaultHwm = this.objectMode ? 16 : 16 * 1024;
    this.highWaterMark = hwm || hwm === 0 ? hwm : defaultHwm;
  
    // cast to ints.
    this.highWaterMark = ~ ~this.highWaterMark;
  
    this.needDrain = false;
    // at the start of calling end()
    this.ending = false;
    // when end() has been called, and returned
    this.ended = false;
    // when 'finish' is emitted
    this.finished = false;
  
    // should we decode strings into buffers before passing to _write?
    // this is here so that some node-core streams can optimize string
    // handling at a lower level.
    var noDecode = options.decodeStrings === false;
    this.decodeStrings = !noDecode;
  
    // Crypto is kind of old and crusty.  Historically, its default string
    // encoding is 'binary' so we have to make this configurable.
    // Everything else in the universe uses 'utf8', though.
    this.defaultEncoding = options.defaultEncoding || 'utf8';
  
    // not an actual buffer we keep track of, but a measurement
    // of how much we're waiting to get pushed to some underlying
    // socket or file.
    this.length = 0;
  
    // a flag to see when we're in the middle of a write.
    this.writing = false;
  
    // when true all writes will be buffered until .uncork() call
    this.corked = 0;
  
    // a flag to be able to tell if the onwrite cb is called immediately,
    // or on a later tick.  We set this to true at first, because any
    // actions that shouldn't happen until "later" should generally also
    // not happen before the first write call.
    this.sync = true;
  
    // a flag to know if we're processing previously buffered items, which
    // may call the _write() callback in the same tick, so that we don't
    // end up in an overlapped onwrite situation.
    this.bufferProcessing = false;
  
    // the callback that's passed to _write(chunk,cb)
    this.onwrite = function (er) {
      onwrite(stream, er);
    };
  
    // the callback that the user supplies to write(chunk,encoding,cb)
    this.writecb = null;
  
    // the amount that is being written when _write is called.
    this.writelen = 0;
  
    this.bufferedRequest = null;
    this.lastBufferedRequest = null;
  
    // number of pending user-supplied write callbacks
    // this must be 0 before 'finish' can be emitted
    this.pendingcb = 0;
  
    // emit prefinish if the only thing we're waiting for is _write cbs
    // This is relevant for synchronous Transform streams
    this.prefinished = false;
  
    // True if the error was already emitted and should not be thrown again
    this.errorEmitted = false;
  
    // count buffered requests
    this.bufferedRequestCount = 0;
  
    // allocate the first CorkedRequest, there is always
    // one allocated and free to use, and we maintain at most two
    this.corkedRequestsFree = new CorkedRequest(this);
  }
  
  WritableState.prototype.getBuffer = function writableStateGetBuffer() {
    var current = this.bufferedRequest;
    var out = [];
    while (current) {
      out.push(current);
      current = current.next;
    }
    return out;
  };
  
  (function () {
    try {
      Object.defineProperty(WritableState.prototype, 'buffer', {
        get: internalUtil.deprecate(function () {
          return this.getBuffer();
        }, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.')
      });
    } catch (_) {}
  })();
  
  var Duplex;
  function Writable(options) {
    Duplex = Duplex || require('./_stream_duplex');
  
    // Writable ctor is applied to Duplexes, though they're not
    // instanceof Writable, they're instanceof Readable.
    if (!(this instanceof Writable) && !(this instanceof Duplex)) return new Writable(options);
  
    this._writableState = new WritableState(options, this);
  
    // legacy.
    this.writable = true;
  
    if (options) {
      if (typeof options.write === 'function') this._write = options.write;
  
      if (typeof options.writev === 'function') this._writev = options.writev;
    }
  
    Stream.call(this);
  }
  
  // Otherwise people can pipe Writable streams, which is just wrong.
  Writable.prototype.pipe = function () {
    this.emit('error', new Error('Cannot pipe, not readable'));
  };
  
  function writeAfterEnd(stream, cb) {
    var er = new Error('write after end');
    // TODO: defer error events consistently everywhere, not just the cb
    stream.emit('error', er);
    processNextTick(cb, er);
  }
  
  // If we get something that is not a buffer, string, null, or undefined,
  // and we're not in objectMode, then that's an error.
  // Otherwise stream chunks are all considered to be of length=1, and the
  // watermarks determine how many objects to keep in the buffer, rather than
  // how many bytes or characters.
  function validChunk(stream, state, chunk, cb) {
    var valid = true;
    var er = false;
    // Always throw error if a null is written
    // if we are not in object mode then throw
    // if it is not a buffer, string, or undefined.
    if (chunk === null) {
      er = new TypeError('May not write null values to stream');
    } else if (!Buffer.isBuffer(chunk) && typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
      er = new TypeError('Invalid non-string/buffer chunk');
    }
    if (er) {
      stream.emit('error', er);
      processNextTick(cb, er);
      valid = false;
    }
    return valid;
  }
  
  Writable.prototype.write = function (chunk, encoding, cb) {
    var state = this._writableState;
    var ret = false;
  
    if (typeof encoding === 'function') {
      cb = encoding;
      encoding = null;
    }
  
    if (Buffer.isBuffer(chunk)) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding;
  
    if (typeof cb !== 'function') cb = nop;
  
    if (state.ended) writeAfterEnd(this, cb);else if (validChunk(this, state, chunk, cb)) {
      state.pendingcb++;
      ret = writeOrBuffer(this, state, chunk, encoding, cb);
    }
  
    return ret;
  };
  
  Writable.prototype.cork = function () {
    var state = this._writableState;
  
    state.corked++;
  };
  
  Writable.prototype.uncork = function () {
    var state = this._writableState;
  
    if (state.corked) {
      state.corked--;
  
      if (!state.writing && !state.corked && !state.finished && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state);
    }
  };
  
  Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) {
    // node::ParseEncoding() requires lower case.
    if (typeof encoding === 'string') encoding = encoding.toLowerCase();
    if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new TypeError('Unknown encoding: ' + encoding);
    this._writableState.defaultEncoding = encoding;
    return this;
  };
  
  function decodeChunk(state, chunk, encoding) {
    if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') {
      chunk = bufferShim.from(chunk, encoding);
    }
    return chunk;
  }
  
  // if we're already writing something, then just put this
  // in the queue, and wait our turn.  Otherwise, call _write
  // If we return false, then we need a drain event, so set that flag.
  function writeOrBuffer(stream, state, chunk, encoding, cb) {
    chunk = decodeChunk(state, chunk, encoding);
  
    if (Buffer.isBuffer(chunk)) encoding = 'buffer';
    var len = state.objectMode ? 1 : chunk.length;
  
    state.length += len;
  
    var ret = state.length < state.highWaterMark;
    // we must ensure that previous needDrain will not be reset to false.
    if (!ret) state.needDrain = true;
  
    if (state.writing || state.corked) {
      var last = state.lastBufferedRequest;
      state.lastBufferedRequest = new WriteReq(chunk, encoding, cb);
      if (last) {
        last.next = state.lastBufferedRequest;
      } else {
        state.bufferedRequest = state.lastBufferedRequest;
      }
      state.bufferedRequestCount += 1;
    } else {
      doWrite(stream, state, false, len, chunk, encoding, cb);
    }
  
    return ret;
  }
  
  function doWrite(stream, state, writev, len, chunk, encoding, cb) {
    state.writelen = len;
    state.writecb = cb;
    state.writing = true;
    state.sync = true;
    if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite);
    state.sync = false;
  }
  
  function onwriteError(stream, state, sync, er, cb) {
    --state.pendingcb;
    if (sync) processNextTick(cb, er);else cb(er);
  
    stream._writableState.errorEmitted = true;
    stream.emit('error', er);
  }
  
  function onwriteStateUpdate(state) {
    state.writing = false;
    state.writecb = null;
    state.length -= state.writelen;
    state.writelen = 0;
  }
  
  function onwrite(stream, er) {
    var state = stream._writableState;
    var sync = state.sync;
    var cb = state.writecb;
  
    onwriteStateUpdate(state);
  
    if (er) onwriteError(stream, state, sync, er, cb);else {
      // Check if we're actually ready to finish, but don't emit yet
      var finished = needFinish(state);
  
      if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) {
        clearBuffer(stream, state);
      }
  
      if (sync) {
        /*<replacement>*/
        asyncWrite(afterWrite, stream, state, finished, cb);
        /*</replacement>*/
      } else {
          afterWrite(stream, state, finished, cb);
        }
    }
  }
  
  function afterWrite(stream, state, finished, cb) {
    if (!finished) onwriteDrain(stream, state);
    state.pendingcb--;
    cb();
    finishMaybe(stream, state);
  }
  
  // Must force callback to be called on nextTick, so that we don't
  // emit 'drain' before the write() consumer gets the 'false' return
  // value, and has a chance to attach a 'drain' listener.
  function onwriteDrain(stream, state) {
    if (state.length === 0 && state.needDrain) {
      state.needDrain = false;
      stream.emit('drain');
    }
  }
  
  // if there's something in the buffer waiting, then process it
  function clearBuffer(stream, state) {
    state.bufferProcessing = true;
    var entry = state.bufferedRequest;
  
    if (stream._writev && entry && entry.next) {
      // Fast case, write everything using _writev()
      var l = state.bufferedRequestCount;
      var buffer = new Array(l);
      var holder = state.corkedRequestsFree;
      holder.entry = entry;
  
      var count = 0;
      while (entry) {
        buffer[count] = entry;
        entry = entry.next;
        count += 1;
      }
  
      doWrite(stream, state, true, state.length, buffer, '', holder.finish);
  
      // doWrite is almost always async, defer these to save a bit of time
      // as the hot path ends with doWrite
      state.pendingcb++;
      state.lastBufferedRequest = null;
      if (holder.next) {
        state.corkedRequestsFree = holder.next;
        holder.next = null;
      } else {
        state.corkedRequestsFree = new CorkedRequest(state);
      }
    } else {
      // Slow case, write chunks one-by-one
      while (entry) {
        var chunk = entry.chunk;
        var encoding = entry.encoding;
        var cb = entry.callback;
        var len = state.objectMode ? 1 : chunk.length;
  
        doWrite(stream, state, false, len, chunk, encoding, cb);
        entry = entry.next;
        // if we didn't call the onwrite immediately, then
        // it means that we need to wait until it does.
        // also, that means that the chunk and cb are currently
        // being processed, so move the buffer counter past them.
        if (state.writing) {
          break;
        }
      }
  
      if (entry === null) state.lastBufferedRequest = null;
    }
  
    state.bufferedRequestCount = 0;
    state.bufferedRequest = entry;
    state.bufferProcessing = false;
  }
  
  Writable.prototype._write = function (chunk, encoding, cb) {
    cb(new Error('not implemented'));
  };
  
  Writable.prototype._writev = null;
  
  Writable.prototype.end = function (chunk, encoding, cb) {
    var state = this._writableState;
  
    if (typeof chunk === 'function') {
      cb = chunk;
      chunk = null;
      encoding = null;
    } else if (typeof encoding === 'function') {
      cb = encoding;
      encoding = null;
    }
  
    if (chunk !== null && chunk !== undefined) this.write(chunk, encoding);
  
    // .end() fully uncorks
    if (state.corked) {
      state.corked = 1;
      this.uncork();
    }
  
    // ignore unnecessary end() calls.
    if (!state.ending && !state.finished) endWritable(this, state, cb);
  };
  
  function needFinish(state) {
    return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing;
  }
  
  function prefinish(stream, state) {
    if (!state.prefinished) {
      state.prefinished = true;
      stream.emit('prefinish');
    }
  }
  
  function finishMaybe(stream, state) {
    var need = needFinish(state);
    if (need) {
      if (state.pendingcb === 0) {
        prefinish(stream, state);
        state.finished = true;
        stream.emit('finish');
      } else {
        prefinish(stream, state);
      }
    }
    return need;
  }
  
  function endWritable(stream, state, cb) {
    state.ending = true;
    finishMaybe(stream, state);
    if (cb) {
      if (state.finished) processNextTick(cb);else stream.once('finish', cb);
    }
    state.ended = true;
    stream.writable = false;
  }
  
  // It seems a linked list but it is not
  // there will be only 2 of these for each stream
  function CorkedRequest(state) {
    var _this = this;
  
    this.next = null;
    this.entry = null;
  
    this.finish = function (err) {
      var entry = _this.entry;
      _this.entry = null;
      while (entry) {
        var cb = entry.callback;
        state.pendingcb--;
        cb(err);
        entry = entry.next;
      }
      if (state.corkedRequestsFree) {
        state.corkedRequestsFree.next = _this;
      } else {
        state.corkedRequestsFree = _this;
      }
    };
  }
  }).call(this,require('_process'))
  },{"./_stream_duplex":69,"_process":67,"buffer":44,"buffer-shims":43,"core-util-is":45,"events":48,"inherits":51,"process-nextick-args":66,"util-deprecate":81}],74:[function(require,module,exports){
  'use strict';
  
  var Buffer = require('buffer').Buffer;
  /*<replacement>*/
  var bufferShim = require('buffer-shims');
  /*</replacement>*/
  
  module.exports = BufferList;
  
  function BufferList() {
    this.head = null;
    this.tail = null;
    this.length = 0;
  }
  
  BufferList.prototype.push = function (v) {
    var entry = { data: v, next: null };
    if (this.length > 0) this.tail.next = entry;else this.head = entry;
    this.tail = entry;
    ++this.length;
  };
  
  BufferList.prototype.unshift = function (v) {
    var entry = { data: v, next: this.head };
    if (this.length === 0) this.tail = entry;
    this.head = entry;
    ++this.length;
  };
  
  BufferList.prototype.shift = function () {
    if (this.length === 0) return;
    var ret = this.head.data;
    if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next;
    --this.length;
    return ret;
  };
  
  BufferList.prototype.clear = function () {
    this.head = this.tail = null;
    this.length = 0;
  };
  
  BufferList.prototype.join = function (s) {
    if (this.length === 0) return '';
    var p = this.head;
    var ret = '' + p.data;
    while (p = p.next) {
      ret += s + p.data;
    }return ret;
  };
  
  BufferList.prototype.concat = function (n) {
    if (this.length === 0) return bufferShim.alloc(0);
    if (this.length === 1) return this.head.data;
    var ret = bufferShim.allocUnsafe(n >>> 0);
    var p = this.head;
    var i = 0;
    while (p) {
      p.data.copy(ret, i);
      i += p.data.length;
      p = p.next;
    }
    return ret;
  };
  },{"buffer":44,"buffer-shims":43}],75:[function(require,module,exports){
  module.exports = require("./lib/_stream_passthrough.js")
  
  },{"./lib/_stream_passthrough.js":70}],76:[function(require,module,exports){
  (function (process){
  var Stream = (function (){
    try {
      return require('st' + 'ream'); // hack to fix a circular dependency issue when used with browserify
    } catch(_){}
  }());
  exports = module.exports = require('./lib/_stream_readable.js');
  exports.Stream = Stream || exports;
  exports.Readable = exports;
  exports.Writable = require('./lib/_stream_writable.js');
  exports.Duplex = require('./lib/_stream_duplex.js');
  exports.Transform = require('./lib/_stream_transform.js');
  exports.PassThrough = require('./lib/_stream_passthrough.js');
  
  if (!process.browser && process.env.READABLE_STREAM === 'disable' && Stream) {
    module.exports = Stream;
  }
  
  }).call(this,require('_process'))
  },{"./lib/_stream_duplex.js":69,"./lib/_stream_passthrough.js":70,"./lib/_stream_readable.js":71,"./lib/_stream_transform.js":72,"./lib/_stream_writable.js":73,"_process":67}],77:[function(require,module,exports){
  module.exports = require("./lib/_stream_transform.js")
  
  },{"./lib/_stream_transform.js":72}],78:[function(require,module,exports){
  module.exports = require("./lib/_stream_writable.js")
  
  },{"./lib/_stream_writable.js":73}],79:[function(require,module,exports){
  // Copyright Joyent, Inc. and other Node contributors.
  //
  // Permission is hereby granted, free of charge, to any person obtaining a
  // copy of this software and associated documentation files (the
  // "Software"), to deal in the Software without restriction, including
  // without limitation the rights to use, copy, modify, merge, publish,
  // distribute, sublicense, and/or sell copies of the Software, and to permit
  // persons to whom the Software is furnished to do so, subject to the
  // following conditions:
  //
  // The above copyright notice and this permission notice shall be included
  // in all copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
  // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
  // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  // USE OR OTHER DEALINGS IN THE SOFTWARE.
  
  module.exports = Stream;
  
  var EE = require('events').EventEmitter;
  var inherits = require('inherits');
  
  inherits(Stream, EE);
  Stream.Readable = require('readable-stream/readable.js');
  Stream.Writable = require('readable-stream/writable.js');
  Stream.Duplex = require('readable-stream/duplex.js');
  Stream.Transform = require('readable-stream/transform.js');
  Stream.PassThrough = require('readable-stream/passthrough.js');
  
  // Backwards-compat with node 0.4.x
  Stream.Stream = Stream;
  
  
  
  // old-style streams.  Note that the pipe method (the only relevant
  // part of this class) is overridden in the Readable class.
  
  function Stream() {
    EE.call(this);
  }
  
  Stream.prototype.pipe = function(dest, options) {
    var source = this;
  
    function ondata(chunk) {
      if (dest.writable) {
        if (false === dest.write(chunk) && source.pause) {
          source.pause();
        }
      }
    }
  
    source.on('data', ondata);
  
    function ondrain() {
      if (source.readable && source.resume) {
        source.resume();
      }
    }
  
    dest.on('drain', ondrain);
  
    // If the 'end' option is not supplied, dest.end() will be called when
    // source gets the 'end' or 'close' events.  Only dest.end() once.
    if (!dest._isStdio && (!options || options.end !== false)) {
      source.on('end', onend);
      source.on('close', onclose);
    }
  
    var didOnEnd = false;
    function onend() {
      if (didOnEnd) return;
      didOnEnd = true;
  
      dest.end();
    }
  
  
    function onclose() {
      if (didOnEnd) return;
      didOnEnd = true;
  
      if (typeof dest.destroy === 'function') dest.destroy();
    }
  
    // don't leave dangling pipes when there are errors.
    function onerror(er) {
      cleanup();
      if (EE.listenerCount(this, 'error') === 0) {
        throw er; // Unhandled stream error in pipe.
      }
    }
  
    source.on('error', onerror);
    dest.on('error', onerror);
  
    // remove all the event listeners that were added.
    function cleanup() {
      source.removeListener('data', ondata);
      dest.removeListener('drain', ondrain);
  
      source.removeListener('end', onend);
      source.removeListener('close', onclose);
  
      source.removeListener('error', onerror);
      dest.removeListener('error', onerror);
  
      source.removeListener('end', cleanup);
      source.removeListener('close', cleanup);
  
      dest.removeListener('close', cleanup);
    }
  
    source.on('end', cleanup);
    source.on('close', cleanup);
  
    dest.on('close', cleanup);
  
    dest.emit('pipe', source);
  
    // Allow for unix-like usage: A.pipe(B).pipe(C)
    return dest;
  };
  
  },{"events":48,"inherits":51,"readable-stream/duplex.js":68,"readable-stream/passthrough.js":75,"readable-stream/readable.js":76,"readable-stream/transform.js":77,"readable-stream/writable.js":78}],80:[function(require,module,exports){
  // Copyright Joyent, Inc. and other Node contributors.
  //
  // Permission is hereby granted, free of charge, to any person obtaining a
  // copy of this software and associated documentation files (the
  // "Software"), to deal in the Software without restriction, including
  // without limitation the rights to use, copy, modify, merge, publish,
  // distribute, sublicense, and/or sell copies of the Software, and to permit
  // persons to whom the Software is furnished to do so, subject to the
  // following conditions:
  //
  // The above copyright notice and this permission notice shall be included
  // in all copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
  // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
  // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  // USE OR OTHER DEALINGS IN THE SOFTWARE.
  
  var Buffer = require('buffer').Buffer;
  
  var isBufferEncoding = Buffer.isEncoding
    || function(encoding) {
         switch (encoding && encoding.toLowerCase()) {
           case 'hex': case 'utf8': case 'utf-8': case 'ascii': case 'binary': case 'base64': case 'ucs2': case 'ucs-2': case 'utf16le': case 'utf-16le': case 'raw': return true;
           default: return false;
         }
       }
  
  
  function assertEncoding(encoding) {
    if (encoding && !isBufferEncoding(encoding)) {
      throw new Error('Unknown encoding: ' + encoding);
    }
  }
  
  // StringDecoder provides an interface for efficiently splitting a series of
  // buffers into a series of JS strings without breaking apart multi-byte
  // characters. CESU-8 is handled as part of the UTF-8 encoding.
  //
  // @TODO Handling all encodings inside a single object makes it very difficult
  // to reason about this code, so it should be split up in the future.
  // @TODO There should be a utf8-strict encoding that rejects invalid UTF-8 code
  // points as used by CESU-8.
  var StringDecoder = exports.StringDecoder = function(encoding) {
    this.encoding = (encoding || 'utf8').toLowerCase().replace(/[-_]/, '');
    assertEncoding(encoding);
    switch (this.encoding) {
      case 'utf8':
        // CESU-8 represents each of Surrogate Pair by 3-bytes
        this.surrogateSize = 3;
        break;
      case 'ucs2':
      case 'utf16le':
        // UTF-16 represents each of Surrogate Pair by 2-bytes
        this.surrogateSize = 2;
        this.detectIncompleteChar = utf16DetectIncompleteChar;
        break;
      case 'base64':
        // Base-64 stores 3 bytes in 4 chars, and pads the remainder.
        this.surrogateSize = 3;
        this.detectIncompleteChar = base64DetectIncompleteChar;
        break;
      default:
        this.write = passThroughWrite;
        return;
    }
  
    // Enough space to store all bytes of a single character. UTF-8 needs 4
    // bytes, but CESU-8 may require up to 6 (3 bytes per surrogate).
    this.charBuffer = new Buffer(6);
    // Number of bytes received for the current incomplete multi-byte character.
    this.charReceived = 0;
    // Number of bytes expected for the current incomplete multi-byte character.
    this.charLength = 0;
  };
  
  
  // write decodes the given buffer and returns it as JS string that is
  // guaranteed to not contain any partial multi-byte characters. Any partial
  // character found at the end of the buffer is buffered up, and will be
  // returned when calling write again with the remaining bytes.
  //
  // Note: Converting a Buffer containing an orphan surrogate to a String
  // currently works, but converting a String to a Buffer (via `new Buffer`, or
  // Buffer#write) will replace incomplete surrogates with the unicode
  // replacement character. See https://codereview.chromium.org/121173009/ .
  StringDecoder.prototype.write = function(buffer) {
    var charStr = '';
    // if our last write ended with an incomplete multibyte character
    while (this.charLength) {
      // determine how many remaining bytes this buffer has to offer for this char
      var available = (buffer.length >= this.charLength - this.charReceived) ?
          this.charLength - this.charReceived :
          buffer.length;
  
      // add the new bytes to the char buffer
      buffer.copy(this.charBuffer, this.charReceived, 0, available);
      this.charReceived += available;
  
      if (this.charReceived < this.charLength) {
        // still not enough chars in this buffer? wait for more ...
        return '';
      }
  
      // remove bytes belonging to the current character from the buffer
      buffer = buffer.slice(available, buffer.length);
  
      // get the character that was split
      charStr = this.charBuffer.slice(0, this.charLength).toString(this.encoding);
  
      // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character
      var charCode = charStr.charCodeAt(charStr.length - 1);
      if (charCode >= 0xD800 && charCode <= 0xDBFF) {
        this.charLength += this.surrogateSize;
        charStr = '';
        continue;
      }
      this.charReceived = this.charLength = 0;
  
      // if there are no more bytes in this buffer, just emit our char
      if (buffer.length === 0) {
        return charStr;
      }
      break;
    }
  
    // determine and set charLength / charReceived
    this.detectIncompleteChar(buffer);
  
    var end = buffer.length;
    if (this.charLength) {
      // buffer the incomplete character bytes we got
      buffer.copy(this.charBuffer, 0, buffer.length - this.charReceived, end);
      end -= this.charReceived;
    }
  
    charStr += buffer.toString(this.encoding, 0, end);
  
    var end = charStr.length - 1;
    var charCode = charStr.charCodeAt(end);
    // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character
    if (charCode >= 0xD800 && charCode <= 0xDBFF) {
      var size = this.surrogateSize;
      this.charLength += size;
      this.charReceived += size;
      this.charBuffer.copy(this.charBuffer, size, 0, size);
      buffer.copy(this.charBuffer, 0, 0, size);
      return charStr.substring(0, end);
    }
  
    // or just emit the charStr
    return charStr;
  };
  
  // detectIncompleteChar determines if there is an incomplete UTF-8 character at
  // the end of the given buffer. If so, it sets this.charLength to the byte
  // length that character, and sets this.charReceived to the number of bytes
  // that are available for this character.
  StringDecoder.prototype.detectIncompleteChar = function(buffer) {
    // determine how many bytes we have to check at the end of this buffer
    var i = (buffer.length >= 3) ? 3 : buffer.length;
  
    // Figure out if one of the last i bytes of our buffer announces an
    // incomplete char.
    for (; i > 0; i--) {
      var c = buffer[buffer.length - i];
  
      // See http://en.wikipedia.org/wiki/UTF-8#Description
  
      // 110XXXXX
      if (i == 1 && c >> 5 == 0x06) {
        this.charLength = 2;
        break;
      }
  
      // 1110XXXX
      if (i <= 2 && c >> 4 == 0x0E) {
        this.charLength = 3;
        break;
      }
  
      // 11110XXX
      if (i <= 3 && c >> 3 == 0x1E) {
        this.charLength = 4;
        break;
      }
    }
    this.charReceived = i;
  };
  
  StringDecoder.prototype.end = function(buffer) {
    var res = '';
    if (buffer && buffer.length)
      res = this.write(buffer);
  
    if (this.charReceived) {
      var cr = this.charReceived;
      var buf = this.charBuffer;
      var enc = this.encoding;
      res += buf.slice(0, cr).toString(enc);
    }
  
    return res;
  };
  
  function passThroughWrite(buffer) {
    return buffer.toString(this.encoding);
  }
  
  function utf16DetectIncompleteChar(buffer) {
    this.charReceived = buffer.length % 2;
    this.charLength = this.charReceived ? 2 : 0;
  }
  
  function base64DetectIncompleteChar(buffer) {
    this.charReceived = buffer.length % 3;
    this.charLength = this.charReceived ? 3 : 0;
  }
  
  },{"buffer":44}],81:[function(require,module,exports){
  (function (global){
  
  /**
   * Module exports.
   */
  
  module.exports = deprecate;
  
  /**
   * Mark that a method should not be used.
   * Returns a modified function which warns once by default.
   *
   * If `localStorage.noDeprecation = true` is set, then it is a no-op.
   *
   * If `localStorage.throwDeprecation = true` is set, then deprecated functions
   * will throw an Error when invoked.
   *
   * If `localStorage.traceDeprecation = true` is set, then deprecated functions
   * will invoke `console.trace()` instead of `console.error()`.
   *
   * @param {Function} fn - the function to deprecate
   * @param {String} msg - the string to print to the console when `fn` is invoked
   * @returns {Function} a new "deprecated" version of `fn`
   * @api public
   */
  
  function deprecate (fn, msg) {
    if (config('noDeprecation')) {
      return fn;
    }
  
    var warned = false;
    function deprecated() {
      if (!warned) {
        if (config('throwDeprecation')) {
          throw new Error(msg);
        } else if (config('traceDeprecation')) {
          console.trace(msg);
        } else {
          console.warn(msg);
        }
        warned = true;
      }
      return fn.apply(this, arguments);
    }
  
    return deprecated;
  }
  
  /**
   * Checks `localStorage` for boolean values for the given `name`.
   *
   * @param {String} name
   * @returns {Boolean}
   * @api private
   */
  
  function config (name) {
    // accessing global.localStorage can trigger a DOMException in sandboxed iframes
    try {
      if (!global.localStorage) return false;
    } catch (_) {
      return false;
    }
    var val = global.localStorage[name];
    if (null == val) return false;
    return String(val).toLowerCase() === 'true';
  }
  
  }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
  },{}],82:[function(require,module,exports){
  arguments[4][51][0].apply(exports,arguments)
  },{"dup":51}],83:[function(require,module,exports){
  module.exports = function isBuffer(arg) {
    return arg && typeof arg === 'object'
      && typeof arg.copy === 'function'
      && typeof arg.fill === 'function'
      && typeof arg.readUInt8 === 'function';
  }
  },{}],84:[function(require,module,exports){
  (function (process,global){
  // Copyright Joyent, Inc. and other Node contributors.
  //
  // Permission is hereby granted, free of charge, to any person obtaining a
  // copy of this software and associated documentation files (the
  // "Software"), to deal in the Software without restriction, including
  // without limitation the rights to use, copy, modify, merge, publish,
  // distribute, sublicense, and/or sell copies of the Software, and to permit
  // persons to whom the Software is furnished to do so, subject to the
  // following conditions:
  //
  // The above copyright notice and this permission notice shall be included
  // in all copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
  // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
  // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  // USE OR OTHER DEALINGS IN THE SOFTWARE.
  
  var formatRegExp = /%[sdj%]/g;
  exports.format = function(f) {
    if (!isString(f)) {
      var objects = [];
      for (var i = 0; i < arguments.length; i++) {
        objects.push(inspect(arguments[i]));
      }
      return objects.join(' ');
    }
  
    var i = 1;
    var args = arguments;
    var len = args.length;
    var str = String(f).replace(formatRegExp, function(x) {
      if (x === '%%') return '%';
      if (i >= len) return x;
      switch (x) {
        case '%s': return String(args[i++]);
        case '%d': return Number(args[i++]);
        case '%j':
          try {
            return JSON.stringify(args[i++]);
          } catch (_) {
            return '[Circular]';
          }
        default:
          return x;
      }
    });
    for (var x = args[i]; i < len; x = args[++i]) {
      if (isNull(x) || !isObject(x)) {
        str += ' ' + x;
      } else {
        str += ' ' + inspect(x);
      }
    }
    return str;
  };
  
  
  // Mark that a method should not be used.
  // Returns a modified function which warns once by default.
  // If --no-deprecation is set, then it is a no-op.
  exports.deprecate = function(fn, msg) {
    // Allow for deprecating things in the process of starting up.
    if (isUndefined(global.process)) {
      return function() {
        return exports.deprecate(fn, msg).apply(this, arguments);
      };
    }
  
    if (process.noDeprecation === true) {
      return fn;
    }
  
    var warned = false;
    function deprecated() {
      if (!warned) {
        if (process.throwDeprecation) {
          throw new Error(msg);
        } else if (process.traceDeprecation) {
          console.trace(msg);
        } else {
          console.error(msg);
        }
        warned = true;
      }
      return fn.apply(this, arguments);
    }
  
    return deprecated;
  };
  
  
  var debugs = {};
  var debugEnviron;
  exports.debuglog = function(set) {
    if (isUndefined(debugEnviron))
      debugEnviron = process.env.NODE_DEBUG || '';
    set = set.toUpperCase();
    if (!debugs[set]) {
      if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
        var pid = process.pid;
        debugs[set] = function() {
          var msg = exports.format.apply(exports, arguments);
          console.error('%s %d: %s', set, pid, msg);
        };
      } else {
        debugs[set] = function() {};
      }
    }
    return debugs[set];
  };
  
  
  /**
   * Echos the value of a value. Trys to print the value out
   * in the best way possible given the different types.
   *
   * @param {Object} obj The object to print out.
   * @param {Object} opts Optional options object that alters the output.
   */
  /* legacy: obj, showHidden, depth, colors*/
  function inspect(obj, opts) {
    // default options
    var ctx = {
      seen: [],
      stylize: stylizeNoColor
    };
    // legacy...
    if (arguments.length >= 3) ctx.depth = arguments[2];
    if (arguments.length >= 4) ctx.colors = arguments[3];
    if (isBoolean(opts)) {
      // legacy...
      ctx.showHidden = opts;
    } else if (opts) {
      // got an "options" object
      exports._extend(ctx, opts);
    }
    // set default options
    if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
    if (isUndefined(ctx.depth)) ctx.depth = 2;
    if (isUndefined(ctx.colors)) ctx.colors = false;
    if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
    if (ctx.colors) ctx.stylize = stylizeWithColor;
    return formatValue(ctx, obj, ctx.depth);
  }
  exports.inspect = inspect;
  
  
  // http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
  inspect.colors = {
    'bold' : [1, 22],
    'italic' : [3, 23],
    'underline' : [4, 24],
    'inverse' : [7, 27],
    'white' : [37, 39],
    'grey' : [90, 39],
    'black' : [30, 39],
    'blue' : [34, 39],
    'cyan' : [36, 39],
    'green' : [32, 39],
    'magenta' : [35, 39],
    'red' : [31, 39],
    'yellow' : [33, 39]
  };
  
  // Don't use 'blue' not visible on cmd.exe
  inspect.styles = {
    'special': 'cyan',
    'number': 'yellow',
    'boolean': 'yellow',
    'undefined': 'grey',
    'null': 'bold',
    'string': 'green',
    'date': 'magenta',
    // "name": intentionally not styling
    'regexp': 'red'
  };
  
  
  function stylizeWithColor(str, styleType) {
    var style = inspect.styles[styleType];
  
    if (style) {
      return '\u001b[' + inspect.colors[style][0] + 'm' + str +
             '\u001b[' + inspect.colors[style][1] + 'm';
    } else {
      return str;
    }
  }
  
  
  function stylizeNoColor(str, styleType) {
    return str;
  }
  
  
  function arrayToHash(array) {
    var hash = {};
  
    array.forEach(function(val, idx) {
      hash[val] = true;
    });
  
    return hash;
  }
  
  
  function formatValue(ctx, value, recurseTimes) {
    // Provide a hook for user-specified inspect functions.
    // Check that value is an object with an inspect function on it
    if (ctx.customInspect &&
        value &&
        isFunction(value.inspect) &&
        // Filter out the util module, it's inspect function is special
        value.inspect !== exports.inspect &&
        // Also filter out any prototype objects using the circular check.
        !(value.constructor && value.constructor.prototype === value)) {
      var ret = value.inspect(recurseTimes, ctx);
      if (!isString(ret)) {
        ret = formatValue(ctx, ret, recurseTimes);
      }
      return ret;
    }
  
    // Primitive types cannot have properties
    var primitive = formatPrimitive(ctx, value);
    if (primitive) {
      return primitive;
    }
  
    // Look up the keys of the object.
    var keys = Object.keys(value);
    var visibleKeys = arrayToHash(keys);
  
    if (ctx.showHidden) {
      keys = Object.getOwnPropertyNames(value);
    }
  
    // IE doesn't make error fields non-enumerable
    // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
    if (isError(value)
        && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
      return formatError(value);
    }
  
    // Some type of object without properties can be shortcutted.
    if (keys.length === 0) {
      if (isFunction(value)) {
        var name = value.name ? ': ' + value.name : '';
        return ctx.stylize('[Function' + name + ']', 'special');
      }
      if (isRegExp(value)) {
        return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
      }
      if (isDate(value)) {
        return ctx.stylize(Date.prototype.toString.call(value), 'date');
      }
      if (isError(value)) {
        return formatError(value);
      }
    }
  
    var base = '', array = false, braces = ['{', '}'];
  
    // Make Array say that they are Array
    if (isArray(value)) {
      array = true;
      braces = ['[', ']'];
    }
  
    // Make functions say that they are functions
    if (isFunction(value)) {
      var n = value.name ? ': ' + value.name : '';
      base = ' [Function' + n + ']';
    }
  
    // Make RegExps say that they are RegExps
    if (isRegExp(value)) {
      base = ' ' + RegExp.prototype.toString.call(value);
    }
  
    // Make dates with properties first say the date
    if (isDate(value)) {
      base = ' ' + Date.prototype.toUTCString.call(value);
    }
  
    // Make error with message first say the error
    if (isError(value)) {
      base = ' ' + formatError(value);
    }
  
    if (keys.length === 0 && (!array || value.length == 0)) {
      return braces[0] + base + braces[1];
    }
  
    if (recurseTimes < 0) {
      if (isRegExp(value)) {
        return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
      } else {
        return ctx.stylize('[Object]', 'special');
      }
    }
  
    ctx.seen.push(value);
  
    var output;
    if (array) {
      output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
    } else {
      output = keys.map(function(key) {
        return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
      });
    }
  
    ctx.seen.pop();
  
    return reduceToSingleString(output, base, braces);
  }
  
  
  function formatPrimitive(ctx, value) {
    if (isUndefined(value))
      return ctx.stylize('undefined', 'undefined');
    if (isString(value)) {
      var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
                                               .replace(/'/g, "\\'")
                                               .replace(/\\"/g, '"') + '\'';
      return ctx.stylize(simple, 'string');
    }
    if (isNumber(value))
      return ctx.stylize('' + value, 'number');
    if (isBoolean(value))
      return ctx.stylize('' + value, 'boolean');
    // For some reason typeof null is "object", so special case here.
    if (isNull(value))
      return ctx.stylize('null', 'null');
  }
  
  
  function formatError(value) {
    return '[' + Error.prototype.toString.call(value) + ']';
  }
  
  
  function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
    var output = [];
    for (var i = 0, l = value.length; i < l; ++i) {
      if (hasOwnProperty(value, String(i))) {
        output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
            String(i), true));
      } else {
        output.push('');
      }
    }
    keys.forEach(function(key) {
      if (!key.match(/^\d+$/)) {
        output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
            key, true));
      }
    });
    return output;
  }
  
  
  function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
    var name, str, desc;
    desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
    if (desc.get) {
      if (desc.set) {
        str = ctx.stylize('[Getter/Setter]', 'special');
      } else {
        str = ctx.stylize('[Getter]', 'special');
      }
    } else {
      if (desc.set) {
        str = ctx.stylize('[Setter]', 'special');
      }
    }
    if (!hasOwnProperty(visibleKeys, key)) {
      name = '[' + key + ']';
    }
    if (!str) {
      if (ctx.seen.indexOf(desc.value) < 0) {
        if (isNull(recurseTimes)) {
          str = formatValue(ctx, desc.value, null);
        } else {
          str = formatValue(ctx, desc.value, recurseTimes - 1);
        }
        if (str.indexOf('\n') > -1) {
          if (array) {
            str = str.split('\n').map(function(line) {
              return '  ' + line;
            }).join('\n').substr(2);
          } else {
            str = '\n' + str.split('\n').map(function(line) {
              return '   ' + line;
            }).join('\n');
          }
        }
      } else {
        str = ctx.stylize('[Circular]', 'special');
      }
    }
    if (isUndefined(name)) {
      if (array && key.match(/^\d+$/)) {
        return str;
      }
      name = JSON.stringify('' + key);
      if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
        name = name.substr(1, name.length - 2);
        name = ctx.stylize(name, 'name');
      } else {
        name = name.replace(/'/g, "\\'")
                   .replace(/\\"/g, '"')
                   .replace(/(^"|"$)/g, "'");
        name = ctx.stylize(name, 'string');
      }
    }
  
    return name + ': ' + str;
  }
  
  
  function reduceToSingleString(output, base, braces) {
    var numLinesEst = 0;
    var length = output.reduce(function(prev, cur) {
      numLinesEst++;
      if (cur.indexOf('\n') >= 0) numLinesEst++;
      return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
    }, 0);
  
    if (length > 60) {
      return braces[0] +
             (base === '' ? '' : base + '\n ') +
             ' ' +
             output.join(',\n  ') +
             ' ' +
             braces[1];
    }
  
    return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
  }
  
  
  // NOTE: These type checking functions intentionally don't use `instanceof`
  // because it is fragile and can be easily faked with `Object.create()`.
  function isArray(ar) {
    return Array.isArray(ar);
  }
  exports.isArray = isArray;
  
  function isBoolean(arg) {
    return typeof arg === 'boolean';
  }
  exports.isBoolean = isBoolean;
  
  function isNull(arg) {
    return arg === null;
  }
  exports.isNull = isNull;
  
  function isNullOrUndefined(arg) {
    return arg == null;
  }
  exports.isNullOrUndefined = isNullOrUndefined;
  
  function isNumber(arg) {
    return typeof arg === 'number';
  }
  exports.isNumber = isNumber;
  
  function isString(arg) {
    return typeof arg === 'string';
  }
  exports.isString = isString;
  
  function isSymbol(arg) {
    return typeof arg === 'symbol';
  }
  exports.isSymbol = isSymbol;
  
  function isUndefined(arg) {
    return arg === void 0;
  }
  exports.isUndefined = isUndefined;
  
  function isRegExp(re) {
    return isObject(re) && objectToString(re) === '[object RegExp]';
  }
  exports.isRegExp = isRegExp;
  
  function isObject(arg) {
    return typeof arg === 'object' && arg !== null;
  }
  exports.isObject = isObject;
  
  function isDate(d) {
    return isObject(d) && objectToString(d) === '[object Date]';
  }
  exports.isDate = isDate;
  
  function isError(e) {
    return isObject(e) &&
        (objectToString(e) === '[object Error]' || e instanceof Error);
  }
  exports.isError = isError;
  
  function isFunction(arg) {
    return typeof arg === 'function';
  }
  exports.isFunction = isFunction;
  
  function isPrimitive(arg) {
    return arg === null ||
           typeof arg === 'boolean' ||
           typeof arg === 'number' ||
           typeof arg === 'string' ||
           typeof arg === 'symbol' ||  // ES6 symbol
           typeof arg === 'undefined';
  }
  exports.isPrimitive = isPrimitive;
  
  exports.isBuffer = require('./support/isBuffer');
  
  function objectToString(o) {
    return Object.prototype.toString.call(o);
  }
  
  
  function pad(n) {
    return n < 10 ? '0' + n.toString(10) : n.toString(10);
  }
  
  
  var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
                'Oct', 'Nov', 'Dec'];
  
  // 26 Feb 16:19:34
  function timestamp() {
    var d = new Date();
    var time = [pad(d.getHours()),
                pad(d.getMinutes()),
                pad(d.getSeconds())].join(':');
    return [d.getDate(), months[d.getMonth()], time].join(' ');
  }
  
  
  // log is just a thin wrapper to console.log that prepends a timestamp
  exports.log = function() {
    console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
  };
  
  
  /**
   * Inherit the prototype methods from one constructor into another.
   *
   * The Function.prototype.inherits from lang.js rewritten as a standalone
   * function (not on Function.prototype). NOTE: If this file is to be loaded
   * during bootstrapping this function needs to be rewritten using some native
   * functions as prototype setup using normal JavaScript does not work as
   * expected during bootstrapping (see mirror.js in r114903).
   *
   * @param {function} ctor Constructor function which needs to inherit the
   *     prototype.
   * @param {function} superCtor Constructor function to inherit prototype from.
   */
  exports.inherits = require('inherits');
  
  exports._extend = function(origin, add) {
    // Don't do anything if add isn't an object
    if (!add || !isObject(add)) return origin;
  
    var keys = Object.keys(add);
    var i = keys.length;
    while (i--) {
      origin[keys[i]] = add[keys[i]];
    }
    return origin;
  };
  
  function hasOwnProperty(obj, prop) {
    return Object.prototype.hasOwnProperty.call(obj, prop);
  }
  
  }).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
  },{"./support/isBuffer":83,"_process":67,"inherits":82}]},{},[1]);
  