mocha.js

(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){
/**
 * Shim process.stdout.
 */

process.stdout = require('browser-stdout')({
  label: false
});

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 ('uncaughtException' == e) {
    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 ('uncaughtException' == e) {
    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 = []
  , 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 ('string' == typeof opts) opts = { ui: opts };
  for (var opt in opts) 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(new RegExp(query.grep));
  if (query.fgrep) mocha.grep(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":58,"browser-stdout":42}],2:[function(require,module,exports){
/* eslint-disable no-unused-vars */
module.exports = function(type) {
  return function() {};
};

},{}],3:[function(require,module,exports){
/**
 * 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){
/**
 * 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){
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){
/**
 * 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);
};

},{}],7:[function(require,module,exports){
/**
 * 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":35,"./utils":39}],8:[function(require,module,exports){
/**
 * Module dependencies.
 */

var Suite = require('../suite');
var Test = require('../test');
var escapeRe = require('escape-string-regexp');

/**
 * 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);

    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) {
      var suite = Suite.create(suites[0], title);
      suite.file = file;
      suites.unshift(suite);
      fn.call(suite);
      suites.shift();
      return suite;
    };

    /**
     * Pending describe.
     */

    context.xdescribe = context.xcontext = context.describe.skip = function(title, fn) {
      var suite = Suite.create(suites[0], title);
      suite.pending = true;
      suites.unshift(suite);
      fn.call(suite);
      suites.shift();
    };

    /**
     * Exclusive suite.
     */

    context.describe.only = function(title, fn) {
      var suite = context.describe(title, fn);
      mocha.grep(suite.fullTitle());
      return suite;
    };

    /**
     * Describe a specification or test-case
     * with the given `title` and callback `fn`
     * acting as a thunk.
     */

    var it = 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) {
      var test = it(title, fn);
      var reString = '^' + escapeRe(test.fullTitle()) + '$';
      mocha.grep(new RegExp(reString));
      return test;
    };

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

},{"../suite":37,"../test":38,"./common":9,"escape-string-regexp":49}],9:[function(require,module,exports){
'use strict';

/**
 * Functions common to more than one interface.
 *
 * @param {Suite[]} suites
 * @param {Context} context
 * @return {Object} An object containing common functions.
 */
module.exports = function(suites, context) {
  return {
    /**
     * This is only present if flag --delay is passed into Mocha. It triggers
     * root suite execution.
     *
     * @param {Suite} suite The root wuite.
     * @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);
    },

    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);
      }
    }
  };
};

},{}],10:[function(require,module,exports){
/**
 * 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":37,"../test":38}],11:[function(require,module,exports){
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){
/**
 * Module dependencies.
 */

var Suite = require('../suite');
var Test = require('../test');
var escapeRe = require('escape-string-regexp');

/**
 * 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);

    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();
      }
      var suite = Suite.create(suites[0], title);
      suite.file = file;
      suites.unshift(suite);
      return suite;
    };

    /**
     * Exclusive test-case.
     */

    context.suite.only = function(title, fn) {
      var suite = context.suite(title, fn);
      mocha.grep(suite.fullTitle());
    };

    /**
     * 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) {
      var test = context.test(title, fn);
      var reString = '^' + escapeRe(test.fullTitle()) + '$';
      mocha.grep(new RegExp(reString));
    };

    context.test.skip = common.test.skip;
    context.test.retries = common.test.retries;
  });
};

},{"../suite":37,"../test":38,"./common":9,"escape-string-regexp":49}],13:[function(require,module,exports){
/**
 * Module dependencies.
 */

var Suite = require('../suite');
var Test = require('../test');
var escapeRe = require('escape-string-regexp');

/**
 * 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);

    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) {
      var suite = Suite.create(suites[0], title);
      suite.file = file;
      suites.unshift(suite);
      fn.call(suite);
      suites.shift();
      return suite;
    };

    /**
     * Pending suite.
     */
    context.suite.skip = function(title, fn) {
      var suite = Suite.create(suites[0], title);
      suite.pending = true;
      suites.unshift(suite);
      fn.call(suite);
      suites.shift();
    };

    /**
     * Exclusive test-case.
     */
    context.suite.only = function(title, fn) {
      var suite = context.suite(title, fn);
      mocha.grep(suite.fullTitle());
    };

    /**
     * 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) {
      var test = context.test(title, fn);
      var reString = '^' + escapeRe(test.fullTitle()) + '$';
      mocha.grep(new RegExp(reString));
    };

    context.test.skip = common.test.skip;
    context.test.retries = common.test.retries;
  });
};

},{"../suite":37,"../test":38,"./common":9,"escape-string-regexp":49}],14:[function(require,module,exports){
(function (process,global,__dirname){
/*!
 * 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.grep(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')
      });
    }
  });
};

/**
 * 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) {
  this.options.grep = typeof re === 'string' ? new RegExp(escapeRe(re)) : 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.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":22,"./runnable":35,"./runner":36,"./suite":37,"./test":38,"./utils":39,"_process":58,"escape-string-regexp":49,"growl":51,"path":43}],15:[function(require,module,exports){
/**
 * 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){

/**
 * 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){
/**
 * 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);
var isatty = false;

/**
 * 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: '․'
};

// 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 = stack.indexOf(message);
    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":39,"_process":58,"diff":48,"supports-color":43,"tty":5}],18:[function(require,module,exports){
/**
 * 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.fn.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":39,"./base":17}],19:[function(require,module,exports){
(function (process){
/**
 * 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 * .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.dot));
  });

  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.dot));
  });

  runner.on('end', function() {
    console.log();
    self.epilogue();
  });
}

/**
 * Inherit from `Base.prototype`.
 */
inherits(Dot, Base);

}).call(this,require('_process'))
},{"../utils":39,"./base":17,"_process":58}],20:[function(require,module,exports){
(function (process,__dirname){
/**
 * Module dependencies.
 */

var JSONCov = require('./json-cov');
var readFileSync = require('fs').readFileSync;
var join = require('path').join;

/**
 * Expose `HTMLCov`.
 */

exports = module.exports = HTMLCov;

/**
 * Initialize a new `JsCoverage` reporter.
 *
 * @api public
 * @param {Runner} runner
 */
function HTMLCov(runner) {
  var jade = require('jade');
  var file = join(__dirname, '/templates/coverage.jade');
  var str = readFileSync(file, 'utf8');
  var fn = jade.compile(str, { filename: file });
  var self = this;

  JSONCov.call(this, runner, false);

  runner.on('end', function() {
    process.stdout.write(fn({
      cov: self.cov,
      coverageClass: coverageClass
    }));
  });
}

/**
 * Return coverage class for a given coverage percentage.
 *
 * @api private
 * @param {number} coveragePctg
 * @return {string}
 */
function coverageClass(coveragePctg) {
  if (coveragePctg >= 75) {
    return 'high';
  }
  if (coveragePctg >= 50) {
    return 'medium';
  }
  if (coveragePctg >= 25) {
    return 'low';
  }
  return 'terrible';
}

}).call(this,require('_process'),"/lib/reporters")
},{"./json-cov":23,"_process":58,"fs":43,"jade":43,"path":43}],21:[function(require,module,exports){
(function (global){
/* 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) {
      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 / this.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":39,"./base":17,"escape-string-regexp":49}],22:[function(require,module,exports){
// 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.JSONCov = exports['json-cov'] = require('./json-cov');
exports.HTMLCov = exports['html-cov'] = require('./html-cov');
exports.JSONStream = exports['json-stream'] = require('./json-stream');

},{"./base":17,"./doc":18,"./dot":19,"./html":21,"./html-cov":20,"./json":25,"./json-cov":23,"./json-stream":24,"./landing":26,"./list":27,"./markdown":28,"./min":29,"./nyan":30,"./progress":31,"./spec":32,"./tap":33,"./xunit":34}],23:[function(require,module,exports){
(function (process,global){
/**
 * Module dependencies.
 */

var Base = require('./base');

/**
 * Expose `JSONCov`.
 */

exports = module.exports = JSONCov;

/**
 * Initialize a new `JsCoverage` reporter.
 *
 * @api public
 * @param {Runner} runner
 * @param {boolean} output
 */
function JSONCov(runner, output) {
  Base.call(this, runner);

  output = arguments.length === 1 || output;
  var self = this;
  var tests = [];
  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('end', function() {
    var cov = global._$jscoverage || {};
    var result = self.cov = map(cov);
    result.stats = self.stats;
    result.tests = tests.map(clean);
    result.failures = failures.map(clean);
    result.passes = passes.map(clean);
    if (!output) {
      return;
    }
    process.stdout.write(JSON.stringify(result, null, 2));
  });
}

/**
 * Map jscoverage data to a JSON structure
 * suitable for reporting.
 *
 * @api private
 * @param {Object} cov
 * @return {Object}
 */

function map(cov) {
  var ret = {
    instrumentation: 'node-jscoverage',
    sloc: 0,
    hits: 0,
    misses: 0,
    coverage: 0,
    files: []
  };

  for (var filename in cov) {
    if (Object.prototype.hasOwnProperty.call(cov, filename)) {
      var data = coverage(filename, cov[filename]);
      ret.files.push(data);
      ret.hits += data.hits;
      ret.misses += data.misses;
      ret.sloc += data.sloc;
    }
  }

  ret.files.sort(function(a, b) {
    return a.filename.localeCompare(b.filename);
  });

  if (ret.sloc > 0) {
    ret.coverage = (ret.hits / ret.sloc) * 100;
  }

  return ret;
}

/**
 * Map jscoverage data for a single source file
 * to a JSON structure suitable for reporting.
 *
 * @api private
 * @param {string} filename name of the source file
 * @param {Object} data jscoverage coverage data
 * @return {Object}
 */
function coverage(filename, data) {
  var ret = {
    filename: filename,
    coverage: 0,
    hits: 0,
    misses: 0,
    sloc: 0,
    source: {}
  };

  data.source.forEach(function(line, num) {
    num++;

    if (data[num] === 0) {
      ret.misses++;
      ret.sloc++;
    } else if (data[num] !== undefined) {
      ret.hits++;
      ret.sloc++;
    }

    ret.source[num] = {
      source: line,
      coverage: data[num] === undefined ? '' : data[num]
    };
  });

  ret.coverage = ret.hits / ret.sloc * 100;

  return ret;
}

/**
 * Return a plain-object representation of `test`
 * free of cyclic properties etc.
 *
 * @api private
 * @param {Object} test
 * @return {Object}
 */
function clean(test) {
  return {
    duration: test.duration,
    currentRetry: test.currentRetry(),
    fullTitle: test.fullTitle(),
    title: test.title
  };
}

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./base":17,"_process":58}],24:[function(require,module,exports){
(function (process){
/**
 * Module dependencies.
 */

var Base = require('./base');

/**
 * 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":58}],25:[function(require,module,exports){
(function (process){
/**
 * 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":58}],26:[function(require,module,exports){
(function (process){
/**
 * 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 * .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":39,"./base":17,"_process":58}],27:[function(require,module,exports){
(function (process){
/**
 * 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.dot)
      + 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":39,"./base":17,"_process":58}],28:[function(require,module,exports){
(function (process){
/**
 * 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":39,"./base":17,"_process":58}],29:[function(require,module,exports){
(function (process){
/**
 * 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":39,"./base":17,"_process":58}],30:[function(require,module,exports){
(function (process){
/**
 * 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 * .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":39,"./base":17,"_process":58}],31:[function(require,module,exports){
(function (process){
/**
 * 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 * .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":39,"./base":17,"_process":58}],32:[function(require,module,exports){
/**
 * Module dependencies.
 */

var Base = require('./base');
var inherits = require('../utils').inherits;
var color = Base.color;
var cursor = Base.cursor;

/**
 * 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');
      cursor.CR();
      console.log(fmt, test.title);
    } else {
      fmt = indent()
        + color('checkmark', '  ' + Base.symbols.ok)
        + color('pass', ' %s')
        + color(test.speed, ' (%dms)');
      cursor.CR();
      console.log(fmt, test.title, test.duration);
    }
  });

  runner.on('fail', function(test) {
    cursor.CR();
    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":39,"./base":17}],33:[function(require,module,exports){
/**
 * 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}],34:[function(require,module,exports){
(function (process,global){
/**
 * 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.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":39,"./base":17,"_process":58,"fs":43,"mkdirp":55,"path":43}],35:[function(require,module,exports){
(function (global){
/**
 * Module dependencies.
 */

var EventEmitter = require('events').EventEmitter;
var Pending = require('./pending');
var debug = require('debug')('mocha:runnable');
var milliseconds = require('./ms');
var utils = require('./utils');
var inherits = utils.inherits;

/**
 * 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`.
 */
inherits(Runnable, EventEmitter);

/**
 * 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;
  }
  if (ms === 0) {
    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 (!arguments.length) {
    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();
};

/**
 * 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. Ensure the done() callback is being called in this test.'));
    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. Ensure the done() callback is being called in this test.');
    }
    fn(err);
  }

  // for .resetTimeout()
  this.callback = done;

  // explicit async with `done` argument
  if (this.async) {
    this.resetTimeout();

    if (this.allowUncaught) {
      return callFnAsync(this.fn);
    }
    try {
      callFnAsync(this.fn);
    } catch (err) {
      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) {
    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) {
    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));
      }
      done();
    });
  }
};

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./ms":15,"./pending":16,"./utils":39,"debug":2,"events":3}],36:[function(require,module,exports){
(function (process,global){
/**
 * 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 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) {
  ++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 :)');
  }

  err.stack = (this.fullStackTrace || !err.stack)
    ? err.stack
    : stackFilter(err.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) {
          suite.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 (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 (suite.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
  if (runnable.state) {
    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;

  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 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":35,"./utils":39,"_process":58,"debug":2,"events":3}],37:[function(require,module,exports){
/**
 * 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) {
  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.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":39,"debug":2,"events":3}],38:[function(require,module,exports){
/**
 * Module dependencies.
 */

var Runnable = require('./runnable');
var inherits = require('./utils').inherits;

/**
 * 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) {
  Runnable.call(this, title, fn);
  this.pending = !fn;
  this.type = 'test';
}

/**
 * Inherit from `Runnable.prototype`.
 */
inherits(Test, Runnable);

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":35,"./utils":39}],39:[function(require,module,exports){
(function (process,Buffer){
/* eslint-env browser */

/**
 * Module dependencies.
 */

var basename = require('path').basename;
var debug = require('debug')('mocha:watch');
var exists = require('fs').existsSync || require('path').existsSync;
var glob = require('glob');
var join = require('path').join;
var readdirSync = require('fs').readdirSync;
var statSync = require('fs').statSync;
var watchFile = require('fs').watchFile;
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}
 */
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 {*}
 */
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;
};

/**
 * 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 (statSync(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/, '')
    .replace(/^function *\(.*\)\s*\{|\(.*\) *=> *\{?/, '')
    .replace(/\s+\}$/, '');

  var spaces = str.match(/^\n?( *)/)[1].length;
  var tabs = str.match(/^\n?(\t*)/)[1].length;
  var re = new RegExp('^\n?' + (tabs ? '\t' : ' ') + '{' + (tabs ? 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 exports.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} [type] The type of the value, if known.
 * @returns {string}
 */
function emptyRepresentation(value, type) {
  type = type || exports.type(value);

  switch (type) {
    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}
 * @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'
 */
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 type = exports.type(value);

  if (!~exports.indexOf(['object', 'array', 'function'], type)) {
    if (type !== 'buffer') {
      return jsonStringify(value);
    }
    var json = value.toJSON();
    // Based on the toJSON result
    return jsonStringify(json.data && json.type ? json.data : json, 2)
      .replace(/,(\n|$)/g, '$1');
  }

  for (var prop in value) {
    if (Object.prototype.hasOwnProperty.call(value, prop)) {
      return jsonStringify(exports.canonicalize(value), 2).replace(/,(\n|$)/g, '$1');
    }
  }

  return emptyRepresentation(value, type);
};

/**
 * 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 (exports.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
 * @return {(Object|Array|Function|string|undefined)}
 */
exports.canonicalize = function(value, stack) {
  var canonicalizedObj;
  /* eslint-disable no-unused-vars */
  var prop;
  /* eslint-enable no-unused-vars */
  var type = exports.type(value);
  function withStack(value, fn) {
    stack.push(value);
    fn();
    stack.pop();
  }

  stack = stack || [];

  if (exports.indexOf(stack, value) !== -1) {
    return '[Circular]';
  }

  switch (type) {
    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, type);
        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 slash = '/';
  var is = typeof document === 'undefined' ? { node: true } : { browser: true };
  // var cwd = is.node
  //     ? process.cwd() + slash
  //     : (typeof location === 'undefined' ? window.location : location).href.replace(/\/[^\/]*$/, '/');
  var cwd = ''

  function isMochaInternal(line) {
    return (~line.indexOf('node_modules' + slash + 'mocha' + slash))
      || (~line.indexOf('components' + slash + 'mochajs' + slash))
      || (~line.indexOf('components' + slash + 'mocha' + slash))
      || (~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 = exports.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');
  };
};

}).call(this,require('_process'),require("buffer").Buffer)
},{"_process":58,"buffer":45,"debug":2,"fs":43,"glob":43,"path":43,"to-iso-string":72,"util":75}],40:[function(require,module,exports){
'use strict'

exports.toByteArray = toByteArray
exports.fromByteArray = fromByteArray

var lookup = []
var revLookup = []
var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array

function init () {
  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
}

init()

function toByteArray (b64) {
  var i, j, l, tmp, placeHolders, arr
  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
  placeHolders = b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0

  // base64 is 4/3 + up to two characters of the original data
  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('')
}

},{}],41:[function(require,module,exports){

},{}],42:[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":58,"stream":59,"util":75}],43:[function(require,module,exports){
arguments[4][41][0].apply(exports,arguments)
},{"dup":41}],44:[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":45}],45:[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.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')
  }
}

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)

  that.write(string, encoding)
  return that
}

function fromArrayLike (that, array) {
  var length = 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 (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 'binary':
    case 'base64':
    case 'raw':
    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 'binary':
      // Deprecated
      case 'raw':
      case 'raws':
        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 'binary':
        return binarySlice(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.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
}

function arrayIndexOf (arr, val, byteOffset, encoding) {
  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 foundIndex = -1
  for (var i = 0; byteOffset + i < arrLength; i++) {
    if (read(arr, byteOffset + i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
      if (foundIndex === -1) foundIndex = i
      if (i - foundIndex + 1 === valLength) return (byteOffset + foundIndex) * indexSize
    } else {
      if (foundIndex !== -1) i -= i - foundIndex
      foundIndex = -1
    }
  }
  return -1
}

Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
  if (typeof byteOffset === 'string') {
    encoding = byteOffset
    byteOffset = 0
  } else if (byteOffset > 0x7fffffff) {
    byteOffset = 0x7fffffff
  } else if (byteOffset < -0x80000000) {
    byteOffset = -0x80000000
  }
  byteOffset >>= 0

  if (this.length === 0) return -1
  if (byteOffset >= this.length) return -1

  // Negative offsets start from the end of the buffer
  if (byteOffset < 0) byteOffset = Math.max(this.length + byteOffset, 0)

  if (typeof val === 'string') {
    val = Buffer.from(val, encoding)
  }

  if (Buffer.isBuffer(val)) {
    // special case: looking for empty string/buffer always fails
    if (val.length === 0) {
      return -1
    }
    return arrayIndexOf(this, val, byteOffset, encoding)
  }
  if (typeof val === 'number') {
    if (Buffer.TYPED_ARRAY_SUPPORT && Uint8Array.prototype.indexOf === 'function') {
      return Uint8Array.prototype.indexOf.call(this, val, byteOffset)
    }
    return arrayIndexOf(this, [ val ], byteOffset, encoding)
  }

  throw new TypeError('val must be string, number or Buffer')
}

Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
  return this.indexOf(val, byteOffset, encoding) !== -1
}

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 Error('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 binaryWrite (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 'binary':
        return binaryWrite(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 binarySlice (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":40,"ieee754":52,"isarray":46}],46:[function(require,module,exports){
var toString = {}.toString;

module.exports = Array.isArray || function (arr) {
  return toString.call(arr) == '[object Array]';
};

},{}],47:[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":54}],48:[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 (typeof define === 'function' && define.amd) {
    /*global define */
    define([], function() { return JsDiff; });
  } else if (typeof global.JsDiff === 'undefined') {
    global.JsDiff = JsDiff;
  }
}(this));

},{}],49:[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,  '\\$&');
};

},{}],50:[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
      }
      throw TypeError('Uncaught, unspecified "error" event.');
    }
  }

  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;
}

},{}],51:[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":58,"child_process":43,"fs":43,"os":56,"path":43}],52:[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
}

},{}],53:[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
  }
}

},{}],54:[function(require,module,exports){
/**
 * Determine if an object is Buffer
 *
 * Author:   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
 * License:  MIT
 *
 * `npm install is-buffer`
 */

module.exports = function (obj) {
  return !!(obj != null &&
    (obj._isBuffer || // For Safari 5-7 (missing Object.prototype.constructor)
      (obj.constructor &&
      typeof obj.constructor.isBuffer === 'function' &&
      obj.constructor.isBuffer(obj))
    ))
}

},{}],55:[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":58,"fs":43,"path":43}],56:[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';

},{}],57:[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":58}],58:[function(require,module,exports){
// shim for using process in browser

var process = module.exports = {};
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 = setTimeout(cleanUpNextTick, 0);
    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;
    clearTimeout(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) {
        setTimeout(drainQueue, 0);
    }
};

// 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; };

},{}],59:[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":50,"inherits":53,"readable-stream/duplex.js":61,"readable-stream/passthrough.js":67,"readable-stream/readable.js":68,"readable-stream/transform.js":69,"readable-stream/writable.js":70}],60:[function(require,module,exports){
arguments[4][46][0].apply(exports,arguments)
},{"dup":46}],61:[function(require,module,exports){
module.exports = require("./lib/_stream_duplex.js")

},{"./lib/_stream_duplex.js":62}],62:[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":64,"./_stream_writable":66,"core-util-is":47,"inherits":53,"process-nextick-args":57}],63:[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":65,"core-util-is":47,"inherits":53}],64:[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 StringDecoder;

util.inherits(Readable, Stream);

var hasPrependListener = typeof EE.prototype.prependListener === 'function';

function prependListener(emitter, event, fn) {
  if (hasPrependListener) return emitter.prependListener(event, fn);

  // This is a brutally ugly 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;

  this.buffer = [];
  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
    n--;
    n |= n >>> 1;
    n |= n >>> 2;
    n |= n >>> 4;
    n |= n >>> 8;
    n |= n >>> 16;
    n++;
  }
  return n;
}

function howMuchToRead(n, state) {
  if (state.length === 0 && state.ended) return 0;

  if (state.objectMode) return n === 0 ? 0 : 1;

  if (n === null || isNaN(n)) {
    // only flow one buffer at a time
    if (state.flowing && state.buffer.length) return state.buffer[0].length;else return state.length;
  }

  if (n <= 0) return 0;

  // If we're asking for more than the target buffer level,
  // then raise the water mark.  Bump up to the next highest
  // power of 2, to prevent increasing it excessively in tiny
  // amounts.
  if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n);

  // don't have that much.  return null, unless we've ended.
  if (n > state.length) {
    if (!state.ended) {
      state.needReadable = true;
      return 0;
    } else {
      return state.length;
    }
  }

  return n;
}

// you can override either this method, or the async _read(n) below.
Readable.prototype.read = function (n) {
  debug('read', n);
  var state = this._readableState;
  var nOrig = n;

  if (typeof n !== 'number' || 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);
  }

  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 (doRead && !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;
  }

  state.length -= n;

  // If we have nothing in the buffer, then we want to know
  // as soon as we *do* get something into the buffer.
  if (state.length === 0 && !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 && state.length === 0) 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();
  }

  src.on('data', ondata);
  function ondata(chunk) {
    debug('ondata');
    var ret = dest.write(chunk);
    if (false === ret) {
      // 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++;
      }
      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 listening to data, and it has not explicitly been paused,
  // then call resume to start the flow of data on the next tick.
  if (ev === 'data' && false !== this._readableState.flowing) {
    this.resume();
  }

  if (ev === 'readable' && !this._readableState.endEmitted) {
    var state = this._readableState;
    if (!state.readableListening) {
      state.readableListening = true;
      state.emittedReadable = false;
      state.needReadable = true;
      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;
  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);
  if (state.flowing) {
    do {
      var chunk = stream.read();
    } while (null !== chunk && state.flowing);
  }
}

// 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.
function fromList(n, state) {
  var list = state.buffer;
  var length = state.length;
  var stringMode = !!state.decoder;
  var objectMode = !!state.objectMode;
  var ret;

  // nothing in the list, definitely empty.
  if (list.length === 0) return null;

  if (length === 0) ret = null;else if (objectMode) ret = list.shift();else if (!n || n >= length) {
    // read it all, truncate the array.
    if (stringMode) ret = list.join('');else if (list.length === 1) ret = list[0];else ret = Buffer.concat(list, length);
    list.length = 0;
  } else {
    // read just some of it.
    if (n < list[0].length) {
      // just take a part of the first list item.
      // slice is the same for buffers and strings.
      var buf = list[0];
      ret = buf.slice(0, n);
      list[0] = buf.slice(n);
    } else if (n === list[0].length) {
      // first list is a perfect match
      ret = list.shift();
    } else {
      // complex case.
      // we have enough to cover it, but it spans past the first buffer.
      if (stringMode) ret = '';else ret = bufferShim.allocUnsafe(n);

      var c = 0;
      for (var i = 0, l = list.length; i < l && c < n; i++) {
        var _buf = list[0];
        var cpy = Math.min(n - c, _buf.length);

        if (stringMode) ret += _buf.slice(0, cpy);else _buf.copy(ret, c, 0, cpy);

        if (cpy < _buf.length) list[0] = _buf.slice(cpy);else list.shift();

        c += cpy;
      }
    }
  }

  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":62,"_process":58,"buffer":45,"buffer-shims":44,"core-util-is":47,"events":50,"inherits":53,"isarray":60,"process-nextick-args":57,"string_decoder/":71,"util":41}],65:[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":62,"core-util-is":47,"inherits":53}],66:[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":62,"_process":58,"buffer":45,"buffer-shims":44,"core-util-is":47,"events":50,"inherits":53,"process-nextick-args":57,"util-deprecate":73}],67:[function(require,module,exports){
module.exports = require("./lib/_stream_passthrough.js")

},{"./lib/_stream_passthrough.js":63}],68:[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":62,"./lib/_stream_passthrough.js":63,"./lib/_stream_readable.js":64,"./lib/_stream_transform.js":65,"./lib/_stream_writable.js":66,"_process":58}],69:[function(require,module,exports){
module.exports = require("./lib/_stream_transform.js")

},{"./lib/_stream_transform.js":65}],70:[function(require,module,exports){
module.exports = require("./lib/_stream_writable.js")

},{"./lib/_stream_writable.js":66}],71:[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":45}],72:[function(require,module,exports){

/**
 * Expose `toIsoString`.
 */

module.exports = toIsoString;


/**
 * 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';
}


/**
 * 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;
}
},{}],73:[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 : {})
},{}],74:[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';
}
},{}],75:[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":74,"_process":58,"inherits":53}]},{},[1]);