etherpad-lite/tests/frontend/lib/mocha.js

(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
(function (process,global){
'use strict';

/* eslint no-unused-vars: off */
/* eslint-env commonjs */

/**
 * Shim process.stdout.
 */

process.stdout = require('browser-stdout')({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 (e === 'uncaughtException') {
    if (originalOnerrorHandler) {
      global.onerror = originalOnerrorHandler;
    } else {
      global.onerror = function() {};
    }
    var i = uncaughtExceptionHandlers.indexOf(fn);
    if (i !== -1) {
      uncaughtExceptionHandlers.splice(i, 1);
    }
  }
};

/**
 * Implements uncaughtException listener.
 */

process.on = function(e, fn) {
  if (e === 'uncaughtException') {
    global.onerror = function(err, url, line) {
      fn(new Error(err + ' (' + url + ':' + line + ')'));
      return !mocha.options.allowUncaught;
    };
    uncaughtExceptionHandlers.push(fn);
  }
};

// The BDD UI is registered by default, but no UI will be functional in the
// browser without an explicit call to the overridden `mocha.ui` (see below).
// Ensure that this default UI does not expose its methods to the global scope.
mocha.suite.removeAllListeners('pre-require');

var immediateQueue = [];
var immediateTimeout;

function timeslice() {
  var immediateStart = new Date().getTime();
  while (immediateQueue.length && new Date().getTime() - immediateStart < 100) {
    immediateQueue.shift()();
  }
  if (immediateQueue.length) {
    immediateTimeout = setTimeout(timeslice, 0);
  } else {
    immediateTimeout = null;
  }
}

/**
 * High-performance override of Runner.immediately.
 */

Mocha.Runner.immediately = function(callback) {
  immediateQueue.push(callback);
  if (!immediateTimeout) {
    immediateTimeout = setTimeout(timeslice, 0);
  }
};

/**
 * Function to allow assertion libraries to throw errors directly into mocha.
 * This is useful when running tests in a browser because window.onerror will
 * only receive the 'message' attribute of the Error.
 */
mocha.throwError = function(err) {
  uncaughtExceptionHandlers.forEach(function(fn) {
    fn(err);
  });
  throw err;
};

/**
 * Override ui to ensure that the ui functions are initialized.
 * Normally this would happen in Mocha.prototype.loadFiles.
 */

mocha.ui = function(ui) {
  Mocha.prototype.ui.call(this, ui);
  this.suite.emit('pre-require', global, null, this);
  return this;
};

/**
 * Setup mocha with the given setting options.
 */

mocha.setup = function(opts) {
  if (typeof opts === 'string') {
    opts = {ui: opts};
  }
  for (var opt in opts) {
    if (Object.prototype.hasOwnProperty.call(opts, opt)) {
      this[opt](opts[opt]);
    }
  }
  return this;
};

/**
 * Run mocha, returning the Runner.
 */

mocha.run = function(fn) {
  var options = mocha.options;
  mocha.globals('location');

  var query = Mocha.utils.parseQuery(global.location.search || '');
  if (query.grep) {
    mocha.grep(query.grep);
  }
  if (query.fgrep) {
    mocha.fgrep(query.fgrep);
  }
  if (query.invert) {
    mocha.invert();
  }

  return Mocha.prototype.run.call(mocha, function(err) {
    // The DOM Document is not available in Web Workers.
    var document = global.document;
    if (
      document &&
      document.getElementById('mocha') &&
      options.noHighlighting !== true
    ) {
      Mocha.utils.highlightTags('code');
    }
    if (fn) {
      fn(err);
    }
  });
};

/**
 * Expose the process shim.
 * https://github.com/mochajs/mocha/pull/916
 */

Mocha.process = process;

/**
 * Expose mocha.
 */

global.Mocha = Mocha;
global.mocha = mocha;

// this allows test/acceptance/required-tokens.js to pass; thus,
// you can now do `const describe = require('mocha').describe` in a
// browser context (assuming browserification).  should fix #880
module.exports = global;

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./lib/mocha":14,"_process":69,"browser-stdout":41}],2:[function(require,module,exports){
(function (process,global){
'use strict';

/**
 * Web Notifications module.
 * @module Growl
 */

/**
 * Save timer references to avoid Sinon interfering (see GH-237).
 */
var Date = global.Date;
var setTimeout = global.setTimeout;
var EVENT_RUN_END = require('../runner').constants.EVENT_RUN_END;

/**
 * Checks if browser notification support exists.
 *
 * @public
 * @see {@link https://caniuse.com/#feat=notifications|Browser support (notifications)}
 * @see {@link https://caniuse.com/#feat=promises|Browser support (promises)}
 * @see {@link Mocha#growl}
 * @see {@link Mocha#isGrowlCapable}
 * @return {boolean} whether browser notification support exists
 */
exports.isCapable = function() {
  var hasNotificationSupport = 'Notification' in window;
  var hasPromiseSupport = typeof Promise === 'function';
  return process.browser && hasNotificationSupport && hasPromiseSupport;
};

/**
 * Implements browser notifications as a pseudo-reporter.
 *
 * @public
 * @see {@link https://developer.mozilla.org/en-US/docs/Web/API/notification|Notification API}
 * @see {@link https://developers.google.com/web/fundamentals/push-notifications/display-a-notification|Displaying a Notification}
 * @see {@link Growl#isPermitted}
 * @see {@link Mocha#_growl}
 * @param {Runner} runner - Runner instance.
 */
exports.notify = function(runner) {
  var promise = isPermitted();

  /**
   * Attempt notification.
   */
  var sendNotification = function() {
    // If user hasn't responded yet... "No notification for you!" (Seinfeld)
    Promise.race([promise, Promise.resolve(undefined)])
      .then(canNotify)
      .then(function() {
        display(runner);
      })
      .catch(notPermitted);
  };

  runner.once(EVENT_RUN_END, sendNotification);
};

/**
 * Checks if browser notification is permitted by user.
 *
 * @private
 * @see {@link https://developer.mozilla.org/en-US/docs/Web/API/Notification/permission|Notification.permission}
 * @see {@link Mocha#growl}
 * @see {@link Mocha#isGrowlPermitted}
 * @returns {Promise<boolean>} promise determining if browser notification
 *     permissible when fulfilled.
 */
function isPermitted() {
  var permitted = {
    granted: function allow() {
      return Promise.resolve(true);
    },
    denied: function deny() {
      return Promise.resolve(false);
    },
    default: function ask() {
      return Notification.requestPermission().then(function(permission) {
        return permission === 'granted';
      });
    }
  };

  return permitted[Notification.permission]();
}

/**
 * @summary
 * Determines if notification should proceed.
 *
 * @description
 * Notification shall <strong>not</strong> proceed unless `value` is true.
 *
 * `value` will equal one of:
 * <ul>
 *   <li><code>true</code> (from `isPermitted`)</li>
 *   <li><code>false</code> (from `isPermitted`)</li>
 *   <li><code>undefined</code> (from `Promise.race`)</li>
 * </ul>
 *
 * @private
 * @param {boolean|undefined} value - Determines if notification permissible.
 * @returns {Promise<undefined>} Notification can proceed
 */
function canNotify(value) {
  if (!value) {
    var why = value === false ? 'blocked' : 'unacknowledged';
    var reason = 'not permitted by user (' + why + ')';
    return Promise.reject(new Error(reason));
  }
  return Promise.resolve();
}

/**
 * Displays the notification.
 *
 * @private
 * @param {Runner} runner - Runner instance.
 */
function display(runner) {
  var stats = runner.stats;
  var symbol = {
    cross: '\u274C',
    tick: '\u2705'
  };
  var logo = require('../../package').notifyLogo;
  var _message;
  var message;
  var title;

  if (stats.failures) {
    _message = stats.failures + ' of ' + stats.tests + ' tests failed';
    message = symbol.cross + ' ' + _message;
    title = 'Failed';
  } else {
    _message = stats.passes + ' tests passed in ' + stats.duration + 'ms';
    message = symbol.tick + ' ' + _message;
    title = 'Passed';
  }

  // Send notification
  var options = {
    badge: logo,
    body: message,
    dir: 'ltr',
    icon: logo,
    lang: 'en-US',
    name: 'mocha',
    requireInteraction: false,
    timestamp: Date.now()
  };
  var notification = new Notification(title, options);

  // Autoclose after brief delay (makes various browsers act same)
  var FORCE_DURATION = 4000;
  setTimeout(notification.close.bind(notification), FORCE_DURATION);
}

/**
 * As notifications are tangential to our purpose, just log the error.
 *
 * @private
 * @param {Error} err - Why notification didn't happen.
 */
function notPermitted(err) {
  console.error('notification error:', err.message);
}

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../../package":90,"../runner":34,"_process":69}],3:[function(require,module,exports){
'use strict';

/**
 * Expose `Progress`.
 */

module.exports = Progress;

/**
 * Initialize a new `Progress` indicator.
 */
function Progress() {
  this.percent = 0;
  this.size(0);
  this.fontSize(11);
  this.font('helvetica, arial, sans-serif');
}

/**
 * Set progress size to `size`.
 *
 * @public
 * @param {number} size
 * @return {Progress} Progress instance.
 */
Progress.prototype.size = function(size) {
  this._size = size;
  return this;
};

/**
 * Set text to `text`.
 *
 * @public
 * @param {string} text
 * @return {Progress} Progress instance.
 */
Progress.prototype.text = function(text) {
  this._text = text;
  return this;
};

/**
 * Set font size to `size`.
 *
 * @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 (ignore) {
    // don't fail if we can't render progress
  }
  return this;
};

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

exports.isatty = function isatty() {
  return true;
};

exports.getWindowSize = function getWindowSize() {
  if ('innerHeight' in global) {
    return [global.innerHeight, global.innerWidth];
  }
  // In a Web Worker, the DOM Window is not available.
  return [640, 480];
};

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],5:[function(require,module,exports){
'use strict';
/**
 * @module Context
 */
/**
 * Expose `Context`.
 */

module.exports = Context;

/**
 * Initialize a new `Context`.
 *
 * @private
 */
function Context() {}

/**
 * Set or get the context `Runnable` to `runnable`.
 *
 * @private
 * @param {Runnable} runnable
 * @return {Context} context
 */
Context.prototype.runnable = function(runnable) {
  if (!arguments.length) {
    return this._runnable;
  }
  this.test = this._runnable = runnable;
  return this;
};

/**
 * Set or get test timeout `ms`.
 *
 * @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`.
 *
 * @private
 * @param {boolean} enabled
 * @return {Context} self
 */
Context.prototype.enableTimeouts = function(enabled) {
  if (!arguments.length) {
    return this.runnable().enableTimeouts();
  }
  this.runnable().enableTimeouts(enabled);
  return this;
};

/**
 * Set or get test slowness threshold `ms`.
 *
 * @private
 * @param {number} ms
 * @return {Context} self
 */
Context.prototype.slow = function(ms) {
  if (!arguments.length) {
    return this.runnable().slow();
  }
  this.runnable().slow(ms);
  return this;
};

/**
 * Mark a test as skipped.
 *
 * @private
 * @throws Pending
 */
Context.prototype.skip = function() {
  this.runnable().skip();
};

/**
 * Set or get a number of allowed retries on failed tests
 *
 * @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;
};

},{}],6:[function(require,module,exports){
'use strict';
/**
 * @module Errors
 */
/**
 * Factory functions to create throwable error objects
 */

/**
 * Creates an error object to be thrown when no files to be tested could be found using specified pattern.
 *
 * @public
 * @param {string} message - Error message to be displayed.
 * @param {string} pattern - User-specified argument value.
 * @returns {Error} instance detailing the error condition
 */
function createNoFilesMatchPatternError(message, pattern) {
  var err = new Error(message);
  err.code = 'ERR_MOCHA_NO_FILES_MATCH_PATTERN';
  err.pattern = pattern;
  return err;
}

/**
 * Creates an error object to be thrown when the reporter specified in the options was not found.
 *
 * @public
 * @param {string} message - Error message to be displayed.
 * @param {string} reporter - User-specified reporter value.
 * @returns {Error} instance detailing the error condition
 */
function createInvalidReporterError(message, reporter) {
  var err = new TypeError(message);
  err.code = 'ERR_MOCHA_INVALID_REPORTER';
  err.reporter = reporter;
  return err;
}

/**
 * Creates an error object to be thrown when the interface specified in the options was not found.
 *
 * @public
 * @param {string} message - Error message to be displayed.
 * @param {string} ui - User-specified interface value.
 * @returns {Error} instance detailing the error condition
 */
function createInvalidInterfaceError(message, ui) {
  var err = new Error(message);
  err.code = 'ERR_MOCHA_INVALID_INTERFACE';
  err.interface = ui;
  return err;
}

/**
 * Creates an error object to be thrown when a behavior, option, or parameter is unsupported.
 *
 * @public
 * @param {string} message - Error message to be displayed.
 * @returns {Error} instance detailing the error condition
 */
function createUnsupportedError(message) {
  var err = new Error(message);
  err.code = 'ERR_MOCHA_UNSUPPORTED';
  return err;
}

/**
 * Creates an error object to be thrown when an argument is missing.
 *
 * @public
 * @param {string} message - Error message to be displayed.
 * @param {string} argument - Argument name.
 * @param {string} expected - Expected argument datatype.
 * @returns {Error} instance detailing the error condition
 */
function createMissingArgumentError(message, argument, expected) {
  return createInvalidArgumentTypeError(message, argument, expected);
}

/**
 * Creates an error object to be thrown when an argument did not use the supported type
 *
 * @public
 * @param {string} message - Error message to be displayed.
 * @param {string} argument - Argument name.
 * @param {string} expected - Expected argument datatype.
 * @returns {Error} instance detailing the error condition
 */
function createInvalidArgumentTypeError(message, argument, expected) {
  var err = new TypeError(message);
  err.code = 'ERR_MOCHA_INVALID_ARG_TYPE';
  err.argument = argument;
  err.expected = expected;
  err.actual = typeof argument;
  return err;
}

/**
 * Creates an error object to be thrown when an argument did not use the supported value
 *
 * @public
 * @param {string} message - Error message to be displayed.
 * @param {string} argument - Argument name.
 * @param {string} value - Argument value.
 * @param {string} [reason] - Why value is invalid.
 * @returns {Error} instance detailing the error condition
 */
function createInvalidArgumentValueError(message, argument, value, reason) {
  var err = new TypeError(message);
  err.code = 'ERR_MOCHA_INVALID_ARG_VALUE';
  err.argument = argument;
  err.value = value;
  err.reason = typeof reason !== 'undefined' ? reason : 'is invalid';
  return err;
}

/**
 * Creates an error object to be thrown when an exception was caught, but the `Error` is falsy or undefined.
 *
 * @public
 * @param {string} message - Error message to be displayed.
 * @returns {Error} instance detailing the error condition
 */
function createInvalidExceptionError(message, value) {
  var err = new Error(message);
  err.code = 'ERR_MOCHA_INVALID_EXCEPTION';
  err.valueType = typeof value;
  err.value = value;
  return err;
}

module.exports = {
  createInvalidArgumentTypeError: createInvalidArgumentTypeError,
  createInvalidArgumentValueError: createInvalidArgumentValueError,
  createInvalidExceptionError: createInvalidExceptionError,
  createInvalidInterfaceError: createInvalidInterfaceError,
  createInvalidReporterError: createInvalidReporterError,
  createMissingArgumentError: createMissingArgumentError,
  createNoFilesMatchPatternError: createNoFilesMatchPatternError,
  createUnsupportedError: createUnsupportedError
};

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

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`
 *
 * @class
 * @extends Runnable
 * @param {String} title
 * @param {Function} fn
 */
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`.
 *
 * @memberof Hook
 * @public
 * @param {Error} err
 * @return {Error}
 */
Hook.prototype.error = function(err) {
  if (!arguments.length) {
    err = this._error;
    this._error = null;
    return err;
  }

  this._error = err;
};

},{"./runnable":33,"./utils":38}],8:[function(require,module,exports){
'use strict';

var Test = require('../test');
var EVENT_FILE_PRE_REQUIRE = require('../suite').constants
  .EVENT_FILE_PRE_REQUIRE;

/**
 * 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 bddInterface(suite) {
  var suites = [suite];

  suite.on(EVENT_FILE_PRE_REQUIRE, function(context, file, mocha) {
    var common = require('./common')(suites, context, mocha);

    context.before = common.before;
    context.after = common.after;
    context.beforeEach = common.beforeEach;
    context.afterEach = common.afterEach;
    context.run = mocha.options.delay && common.runWithSuite(suite);
    /**
     * Describe a "suite" with the given `title`
     * and callback `fn` containing nested suites
     * and/or tests.
     */

    context.describe = context.context = function(title, fn) {
      return common.suite.create({
        title: title,
        file: file,
        fn: fn
      });
    };

    /**
     * Pending describe.
     */

    context.xdescribe = context.xcontext = context.describe.skip = function(
      title,
      fn
    ) {
      return common.suite.skip({
        title: title,
        file: file,
        fn: fn
      });
    };

    /**
     * Exclusive suite.
     */

    context.describe.only = function(title, fn) {
      return common.suite.only({
        title: title,
        file: file,
        fn: fn
      });
    };

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

    context.it = context.specify = function(title, fn) {
      var suite = suites[0];
      if (suite.isPending()) {
        fn = null;
      }
      var test = new Test(title, fn);
      test.file = file;
      suite.addTest(test);
      return test;
    };

    /**
     * Exclusive test-case.
     */

    context.it.only = function(title, fn) {
      return common.test.only(mocha, context.it(title, fn));
    };

    /**
     * Pending test case.
     */

    context.xit = context.xspecify = context.it.skip = function(title) {
      return context.it(title);
    };

    /**
     * Number of attempts to retry.
     */
    context.it.retries = function(n) {
      context.retries(n);
    };
  });
};

module.exports.description = 'BDD or RSpec style [default]';

},{"../suite":36,"../test":37,"./common":9}],9:[function(require,module,exports){
'use strict';

var Suite = require('../suite');
var errors = require('../errors');
var createMissingArgumentError = errors.createMissingArgumentError;

/**
 * Functions common to more than one interface.
 *
 * @param {Suite[]} suites
 * @param {Context} context
 * @param {Mocha} mocha
 * @return {Object} An object containing common functions.
 */
module.exports = function(suites, context, mocha) {
  /**
   * Check if the suite should be tested.
   *
   * @private
   * @param {Suite} suite - suite to check
   * @returns {boolean}
   */
  function shouldBeTested(suite) {
    return (
      !mocha.options.grep ||
      (mocha.options.grep &&
        mocha.options.grep.test(suite.fullTitle()) &&
        !mocha.options.invert)
    );
  }

  return {
    /**
     * This is only present if flag --delay is passed into Mocha. It triggers
     * root suite execution.
     *
     * @param {Suite} suite The root suite.
     * @return {Function} A function which runs the root suite
     */
    runWithSuite: function runWithSuite(suite) {
      return function run() {
        suite.run();
      };
    },

    /**
     * Execute before running tests.
     *
     * @param {string} name
     * @param {Function} fn
     */
    before: function(name, fn) {
      suites[0].beforeAll(name, fn);
    },

    /**
     * Execute after running tests.
     *
     * @param {string} name
     * @param {Function} fn
     */
    after: function(name, fn) {
      suites[0].afterAll(name, fn);
    },

    /**
     * Execute before each test case.
     *
     * @param {string} name
     * @param {Function} fn
     */
    beforeEach: function(name, fn) {
      suites[0].beforeEach(name, fn);
    },

    /**
     * Execute after each test case.
     *
     * @param {string} name
     * @param {Function} fn
     */
    afterEach: function(name, fn) {
      suites[0].afterEach(name, fn);
    },

    suite: {
      /**
       * Create an exclusive Suite; convenience function
       * See docstring for create() below.
       *
       * @param {Object} opts
       * @returns {Suite}
       */
      only: function only(opts) {
        opts.isOnly = true;
        return this.create(opts);
      },

      /**
       * Create a Suite, but skip it; convenience function
       * See docstring for create() below.
       *
       * @param {Object} opts
       * @returns {Suite}
       */
      skip: function skip(opts) {
        opts.pending = true;
        return this.create(opts);
      },

      /**
       * Creates a suite.
       *
       * @param {Object} opts Options
       * @param {string} opts.title Title of Suite
       * @param {Function} [opts.fn] Suite Function (not always applicable)
       * @param {boolean} [opts.pending] Is Suite pending?
       * @param {string} [opts.file] Filepath where this Suite resides
       * @param {boolean} [opts.isOnly] Is Suite exclusive?
       * @returns {Suite}
       */
      create: function create(opts) {
        var suite = Suite.create(suites[0], opts.title);
        suite.pending = Boolean(opts.pending);
        suite.file = opts.file;
        suites.unshift(suite);
        if (opts.isOnly) {
          if (mocha.options.forbidOnly && shouldBeTested(suite)) {
            throw new Error('`.only` forbidden');
          }

          suite.parent.appendOnlySuite(suite);
        }
        if (suite.pending) {
          if (mocha.options.forbidPending && shouldBeTested(suite)) {
            throw new Error('Pending test forbidden');
          }
        }
        if (typeof opts.fn === 'function') {
          opts.fn.call(suite);
          suites.shift();
        } else if (typeof opts.fn === 'undefined' && !suite.pending) {
          throw createMissingArgumentError(
            'Suite "' +
              suite.fullTitle() +
              '" was defined but no callback was supplied. ' +
              'Supply a callback or explicitly skip the suite.',
            'callback',
            'function'
          );
        } else if (!opts.fn && suite.pending) {
          suites.shift();
        }

        return suite;
      }
    },

    test: {
      /**
       * Exclusive test-case.
       *
       * @param {Object} mocha
       * @param {Function} test
       * @returns {*}
       */
      only: function(mocha, test) {
        test.parent.appendOnlyTest(test);
        return test;
      },

      /**
       * Pending test case.
       *
       * @param {string} title
       */
      skip: function(title) {
        context.test(title);
      },

      /**
       * Number of retry attempts
       *
       * @param {number} n
       */
      retries: function(n) {
        context.retries(n);
      }
    }
  };
};

},{"../errors":6,"../suite":36}],10:[function(require,module,exports){
'use strict';
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(Suite.constants.EVENT_FILE_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();
      }
    }
  }
};

module.exports.description = 'Node.js module ("exports") style';

},{"../suite":36,"../test":37}],11:[function(require,module,exports){
'use strict';

exports.bdd = require('./bdd');
exports.tdd = require('./tdd');
exports.qunit = require('./qunit');
exports.exports = require('./exports');

},{"./bdd":8,"./exports":10,"./qunit":12,"./tdd":13}],12:[function(require,module,exports){
'use strict';

var Test = require('../test');
var EVENT_FILE_PRE_REQUIRE = require('../suite').constants
  .EVENT_FILE_PRE_REQUIRE;

/**
 * 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 qUnitInterface(suite) {
  var suites = [suite];

  suite.on(EVENT_FILE_PRE_REQUIRE, function(context, file, mocha) {
    var common = require('./common')(suites, context, mocha);

    context.before = common.before;
    context.after = common.after;
    context.beforeEach = common.beforeEach;
    context.afterEach = common.afterEach;
    context.run = mocha.options.delay && common.runWithSuite(suite);
    /**
     * Describe a "suite" with the given `title`.
     */

    context.suite = function(title) {
      if (suites.length > 1) {
        suites.shift();
      }
      return common.suite.create({
        title: title,
        file: file,
        fn: false
      });
    };

    /**
     * Exclusive Suite.
     */

    context.suite.only = function(title) {
      if (suites.length > 1) {
        suites.shift();
      }
      return common.suite.only({
        title: title,
        file: file,
        fn: false
      });
    };

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

    context.test = function(title, fn) {
      var test = new Test(title, fn);
      test.file = file;
      suites[0].addTest(test);
      return test;
    };

    /**
     * Exclusive test-case.
     */

    context.test.only = function(title, fn) {
      return common.test.only(mocha, context.test(title, fn));
    };

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

module.exports.description = 'QUnit style';

},{"../suite":36,"../test":37,"./common":9}],13:[function(require,module,exports){
'use strict';

var Test = require('../test');
var EVENT_FILE_PRE_REQUIRE = require('../suite').constants
  .EVENT_FILE_PRE_REQUIRE;

/**
 * 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(EVENT_FILE_PRE_REQUIRE, function(context, file, mocha) {
    var common = require('./common')(suites, context, mocha);

    context.setup = common.beforeEach;
    context.teardown = common.afterEach;
    context.suiteSetup = common.before;
    context.suiteTeardown = common.after;
    context.run = mocha.options.delay && common.runWithSuite(suite);

    /**
     * Describe a "suite" with the given `title` and callback `fn` containing
     * nested suites and/or tests.
     */
    context.suite = function(title, fn) {
      return common.suite.create({
        title: title,
        file: file,
        fn: fn
      });
    };

    /**
     * Pending suite.
     */
    context.suite.skip = function(title, fn) {
      return common.suite.skip({
        title: title,
        file: file,
        fn: fn
      });
    };

    /**
     * Exclusive test-case.
     */
    context.suite.only = function(title, fn) {
      return common.suite.only({
        title: title,
        file: file,
        fn: fn
      });
    };

    /**
     * Describe a specification or test-case with the given `title` and
     * callback `fn` acting as a thunk.
     */
    context.test = function(title, fn) {
      var suite = suites[0];
      if (suite.isPending()) {
        fn = null;
      }
      var test = new Test(title, fn);
      test.file = file;
      suite.addTest(test);
      return test;
    };

    /**
     * Exclusive test-case.
     */

    context.test.only = function(title, fn) {
      return common.test.only(mocha, context.test(title, fn));
    };

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

module.exports.description =
  'traditional "suite"/"test" instead of BDD\'s "describe"/"it"';

},{"../suite":36,"../test":37,"./common":9}],14:[function(require,module,exports){
(function (process,global){
'use strict';

/*!
 * mocha
 * Copyright(c) 2011 TJ Holowaychuk <tj@vision-media.ca>
 * MIT Licensed
 */

var escapeRe = require('escape-string-regexp');
var path = require('path');
var builtinReporters = require('./reporters');
var growl = require('./growl');
var utils = require('./utils');
var mocharc = require('./mocharc.json');
var errors = require('./errors');
var Suite = require('./suite');
var esmUtils = utils.supportsEsModules() ? require('./esm-utils') : undefined;
var createStatsCollector = require('./stats-collector');
var createInvalidReporterError = errors.createInvalidReporterError;
var createInvalidInterfaceError = errors.createInvalidInterfaceError;
var EVENT_FILE_PRE_REQUIRE = Suite.constants.EVENT_FILE_PRE_REQUIRE;
var EVENT_FILE_POST_REQUIRE = Suite.constants.EVENT_FILE_POST_REQUIRE;
var EVENT_FILE_REQUIRE = Suite.constants.EVENT_FILE_REQUIRE;
var sQuote = utils.sQuote;

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.
 */

/**
 * @public
 * @class utils
 * @memberof Mocha
 */
exports.utils = utils;
exports.interfaces = require('./interfaces');
/**
 * @public
 * @memberof Mocha
 */
exports.reporters = builtinReporters;
exports.Runnable = require('./runnable');
exports.Context = require('./context');
/**
 *
 * @memberof Mocha
 */
exports.Runner = require('./runner');
exports.Suite = Suite;
exports.Hook = require('./hook');
exports.Test = require('./test');

/**
 * Constructs a new Mocha instance with `options`.
 *
 * @public
 * @class Mocha
 * @param {Object} [options] - Settings object.
 * @param {boolean} [options.allowUncaught] - Propagate uncaught errors?
 * @param {boolean} [options.asyncOnly] - Force `done` callback or promise?
 * @param {boolean} [options.bail] - Bail after first test failure?
 * @param {boolean} [options.checkLeaks] - Check for global variable leaks?
 * @param {boolean} [options.color] - Color TTY output from reporter?
 * @param {boolean} [options.delay] - Delay root suite execution?
 * @param {boolean} [options.diff] - Show diff on failure?
 * @param {string} [options.fgrep] - Test filter given string.
 * @param {boolean} [options.forbidOnly] - Tests marked `only` fail the suite?
 * @param {boolean} [options.forbidPending] - Pending tests fail the suite?
 * @param {boolean} [options.fullTrace] - Full stacktrace upon failure?
 * @param {string[]} [options.global] - Variables expected in global scope.
 * @param {RegExp|string} [options.grep] - Test filter given regular expression.
 * @param {boolean} [options.growl] - Enable desktop notifications?
 * @param {boolean} [options.inlineDiffs] - Display inline diffs?
 * @param {boolean} [options.invert] - Invert test filter matches?
 * @param {boolean} [options.noHighlighting] - Disable syntax highlighting?
 * @param {string|constructor} [options.reporter] - Reporter name or constructor.
 * @param {Object} [options.reporterOption] - Reporter settings object.
 * @param {number} [options.retries] - Number of times to retry failed tests.
 * @param {number} [options.slow] - Slow threshold value.
 * @param {number|string} [options.timeout] - Timeout threshold value.
 * @param {string} [options.ui] - Interface name.
 */
function Mocha(options) {
  options = utils.assign({}, mocharc, options || {});
  this.files = [];
  this.options = options;
  // root suite
  this.suite = new exports.Suite('', new exports.Context(), true);

  this.grep(options.grep)
    .fgrep(options.fgrep)
    .ui(options.ui)
    .reporter(
      options.reporter,
      options.reporterOption || options.reporterOptions // reporterOptions was previously the only way to specify options to reporter
    )
    .slow(options.slow)
    .global(options.global);

  // this guard exists because Suite#timeout does not consider `undefined` to be valid input
  if (typeof options.timeout !== 'undefined') {
    this.timeout(options.timeout === false ? 0 : options.timeout);
  }

  if ('retries' in options) {
    this.retries(options.retries);
  }

  [
    'allowUncaught',
    'asyncOnly',
    'bail',
    'checkLeaks',
    'color',
    'delay',
    'diff',
    'forbidOnly',
    'forbidPending',
    'fullTrace',
    'growl',
    'inlineDiffs',
    'invert'
  ].forEach(function(opt) {
    if (options[opt]) {
      this[opt]();
    }
  }, this);
}

/**
 * Enables or disables bailing on the first failure.
 *
 * @public
 * @see [CLI option](../#-bail-b)
 * @param {boolean} [bail=true] - Whether to bail on first error.
 * @returns {Mocha} this
 * @chainable
 */
Mocha.prototype.bail = function(bail) {
  this.suite.bail(bail !== false);
  return this;
};

/**
 * @summary
 * Adds `file` to be loaded for execution.
 *
 * @description
 * Useful for generic setup code that must be included within test suite.
 *
 * @public
 * @see [CLI option](../#-file-filedirectoryglob)
 * @param {string} file - Pathname of file to be loaded.
 * @returns {Mocha} this
 * @chainable
 */
Mocha.prototype.addFile = function(file) {
  this.files.push(file);
  return this;
};

/**
 * Sets reporter to `reporter`, defaults to "spec".
 *
 * @public
 * @see [CLI option](../#-reporter-name-r-name)
 * @see [Reporters](../#reporters)
 * @param {String|Function} reporter - Reporter name or constructor.
 * @param {Object} [reporterOptions] - Options used to configure the reporter.
 * @returns {Mocha} this
 * @chainable
 * @throws {Error} if requested reporter cannot be loaded
 * @example
 *
 * // Use XUnit reporter and direct its output to file
 * mocha.reporter('xunit', { output: '/path/to/testspec.xunit.xml' });
 */
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 (builtinReporters[reporter]) {
      _reporter = builtinReporters[reporter];
    }
    // Try to load reporters from process.cwd() and node_modules
    if (!_reporter) {
      try {
        _reporter = require(reporter);
      } catch (err) {
        if (
          err.code !== 'MODULE_NOT_FOUND' ||
          err.message.indexOf('Cannot find module') !== -1
        ) {
          // Try to load reporters from a path (absolute or relative)
          try {
            _reporter = require(path.resolve(process.cwd(), reporter));
          } catch (_err) {
            _err.code !== 'MODULE_NOT_FOUND' ||
            _err.message.indexOf('Cannot find module') !== -1
              ? console.warn(sQuote(reporter) + ' reporter not found')
              : console.warn(
                  sQuote(reporter) +
                    ' reporter blew up with error:\n' +
                    err.stack
                );
          }
        } else {
          console.warn(
            sQuote(reporter) + ' reporter blew up with error:\n' + err.stack
          );
        }
      }
    }
    if (!_reporter) {
      throw createInvalidReporterError(
        'invalid reporter ' + sQuote(reporter),
        reporter
      );
    }
    this._reporter = _reporter;
  }
  this.options.reporterOption = reporterOptions;
  // alias option name is used in public reporters xunit/tap/progress
  this.options.reporterOptions = reporterOptions;
  return this;
};

/**
 * Sets test UI `name`, defaults to "bdd".
 *
 * @public
 * @see [CLI option](../#-ui-name-u-name)
 * @see [Interface DSLs](../#interfaces)
 * @param {string|Function} [ui=bdd] - Interface name or class.
 * @returns {Mocha} this
 * @chainable
 * @throws {Error} if requested interface cannot be loaded
 */
Mocha.prototype.ui = function(ui) {
  var bindInterface;
  if (typeof ui === 'function') {
    bindInterface = ui;
  } else {
    ui = ui || 'bdd';
    bindInterface = exports.interfaces[ui];
    if (!bindInterface) {
      try {
        bindInterface = require(ui);
      } catch (err) {
        throw createInvalidInterfaceError(
          'invalid interface ' + sQuote(ui),
          ui
        );
      }
    }
  }
  bindInterface(this.suite);

  this.suite.on(EVENT_FILE_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.xit = context.xit || (context.test && context.test.skip);
    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;
};

/**
 * Loads `files` prior to execution. Does not support ES Modules.
 *
 * @description
 * The implementation relies on Node's `require` to execute
 * the test interface functions and will be subject to its cache.
 * Supports only CommonJS modules. To load ES modules, use Mocha#loadFilesAsync.
 *
 * @private
 * @see {@link Mocha#addFile}
 * @see {@link Mocha#run}
 * @see {@link Mocha#unloadFiles}
 * @see {@link Mocha#loadFilesAsync}
 * @param {Function} [fn] - Callback invoked upon completion.
 */
Mocha.prototype.loadFiles = function(fn) {
  var self = this;
  var suite = this.suite;
  this.files.forEach(function(file) {
    file = path.resolve(file);
    suite.emit(EVENT_FILE_PRE_REQUIRE, global, file, self);
    suite.emit(EVENT_FILE_REQUIRE, require(file), file, self);
    suite.emit(EVENT_FILE_POST_REQUIRE, global, file, self);
  });
  fn && fn();
};

/**
 * Loads `files` prior to execution. Supports Node ES Modules.
 *
 * @description
 * The implementation relies on Node's `require` and `import` to execute
 * the test interface functions and will be subject to its cache.
 * Supports both CJS and ESM modules.
 *
 * @public
 * @see {@link Mocha#addFile}
 * @see {@link Mocha#run}
 * @see {@link Mocha#unloadFiles}
 * @returns {Promise}
 * @example
 *
 * // loads ESM (and CJS) test files asynchronously, then runs root suite
 * mocha.loadFilesAsync()
 *   .then(() => mocha.run(failures => process.exitCode = failures ? 1 : 0))
 *   .catch(() => process.exitCode = 1);
 */
Mocha.prototype.loadFilesAsync = function() {
  var self = this;
  var suite = this.suite;
  this.loadAsync = true;

  if (!esmUtils) {
    return new Promise(function(resolve) {
      self.loadFiles(resolve);
    });
  }

  return esmUtils.loadFilesAsync(
    this.files,
    function(file) {
      suite.emit(EVENT_FILE_PRE_REQUIRE, global, file, self);
    },
    function(file, resultModule) {
      suite.emit(EVENT_FILE_REQUIRE, resultModule, file, self);
      suite.emit(EVENT_FILE_POST_REQUIRE, global, file, self);
    }
  );
};

/**
 * Removes a previously loaded file from Node's `require` cache.
 *
 * @private
 * @static
 * @see {@link Mocha#unloadFiles}
 * @param {string} file - Pathname of file to be unloaded.
 */
Mocha.unloadFile = function(file) {
  delete require.cache[require.resolve(file)];
};

/**
 * Unloads `files` from Node's `require` cache.
 *
 * @description
 * This allows required files to be "freshly" reloaded, providing the ability
 * to reuse a Mocha instance programmatically.
 * Note: does not clear ESM module files from the cache
 *
 * <strong>Intended for consumers &mdash; not used internally</strong>
 *
 * @public
 * @see {@link Mocha#run}
 * @returns {Mocha} this
 * @chainable
 */
Mocha.prototype.unloadFiles = function() {
  this.files.forEach(Mocha.unloadFile);
  return this;
};

/**
 * Sets `grep` filter after escaping RegExp special characters.
 *
 * @public
 * @see {@link Mocha#grep}
 * @param {string} str - Value to be converted to a regexp.
 * @returns {Mocha} this
 * @chainable
 * @example
 *
 * // Select tests whose full title begins with `"foo"` followed by a period
 * mocha.fgrep('foo.');
 */
Mocha.prototype.fgrep = function(str) {
  if (!str) {
    return this;
  }
  return this.grep(new RegExp(escapeRe(str)));
};

/**
 * @summary
 * Sets `grep` filter used to select specific tests for execution.
 *
 * @description
 * If `re` is a regexp-like string, it will be converted to regexp.
 * The regexp is tested against the full title of each test (i.e., the
 * name of the test preceded by titles of each its ancestral suites).
 * As such, using an <em>exact-match</em> fixed pattern against the
 * test name itself will not yield any matches.
 * <br>
 * <strong>Previous filter value will be overwritten on each call!</strong>
 *
 * @public
 * @see [CLI option](../#-grep-regexp-g-regexp)
 * @see {@link Mocha#fgrep}
 * @see {@link Mocha#invert}
 * @param {RegExp|String} re - Regular expression used to select tests.
 * @return {Mocha} this
 * @chainable
 * @example
 *
 * // Select tests whose full title contains `"match"`, ignoring case
 * mocha.grep(/match/i);
 * @example
 *
 * // Same as above but with regexp-like string argument
 * mocha.grep('/match/i');
 * @example
 *
 * // ## Anti-example
 * // Given embedded test `it('only-this-test')`...
 * mocha.grep('/^only-this-test$/');    // NO! Use `.only()` to do this!
 */
Mocha.prototype.grep = function(re) {
  if (utils.isString(re)) {
    // extract args if it's regex-like, i.e: [string, pattern, flag]
    var arg = re.match(/^\/(.*)\/(g|i|)$|.*/);
    this.options.grep = new RegExp(arg[1] || arg[0], arg[2]);
  } else {
    this.options.grep = re;
  }
  return this;
};

/**
 * Inverts `grep` matches.
 *
 * @public
 * @see {@link Mocha#grep}
 * @return {Mocha} this
 * @chainable
 * @example
 *
 * // Select tests whose full title does *not* contain `"match"`, ignoring case
 * mocha.grep(/match/i).invert();
 */
Mocha.prototype.invert = function() {
  this.options.invert = true;
  return this;
};

/**
 * Enables or disables ignoring global leaks.
 *
 * @deprecated since v7.0.0
 * @public
 * @see {@link Mocha#checkLeaks}
 * @param {boolean} [ignoreLeaks=false] - Whether to ignore global leaks.
 * @return {Mocha} this
 * @chainable
 */
Mocha.prototype.ignoreLeaks = function(ignoreLeaks) {
  utils.deprecate(
    '"ignoreLeaks()" is DEPRECATED, please use "checkLeaks()" instead.'
  );
  this.options.checkLeaks = !ignoreLeaks;
  return this;
};

/**
 * Enables or disables checking for global variables leaked while running tests.
 *
 * @public
 * @see [CLI option](../#-check-leaks)
 * @param {boolean} [checkLeaks=true] - Whether to check for global variable leaks.
 * @return {Mocha} this
 * @chainable
 */
Mocha.prototype.checkLeaks = function(checkLeaks) {
  this.options.checkLeaks = checkLeaks !== false;
  return this;
};

/**
 * Displays full stack trace upon test failure.
 *
 * @public
 * @see [CLI option](../#-full-trace)
 * @param {boolean} [fullTrace=true] - Whether to print full stacktrace upon failure.
 * @return {Mocha} this
 * @chainable
 */
Mocha.prototype.fullTrace = function(fullTrace) {
  this.options.fullTrace = fullTrace !== false;
  return this;
};

/**
 * Enables desktop notification support if prerequisite software installed.
 *
 * @public
 * @see [CLI option](../#-growl-g)
 * @return {Mocha} this
 * @chainable
 */
Mocha.prototype.growl = function() {
  this.options.growl = this.isGrowlCapable();
  if (!this.options.growl) {
    var detail = process.browser
      ? 'notification support not available in this browser...'
      : 'notification support prerequisites not installed...';
    console.error(detail + ' cannot enable!');
  }
  return this;
};

/**
 * @summary
 * Determines if Growl support seems likely.
 *
 * @description
 * <strong>Not available when run in browser.</strong>
 *
 * @private
 * @see {@link Growl#isCapable}
 * @see {@link Mocha#growl}
 * @return {boolean} whether Growl support can be expected
 */
Mocha.prototype.isGrowlCapable = growl.isCapable;

/**
 * Implements desktop notifications using a pseudo-reporter.
 *
 * @private
 * @see {@link Mocha#growl}
 * @see {@link Growl#notify}
 * @param {Runner} runner - Runner instance.
 */
Mocha.prototype._growl = growl.notify;

/**
 * Specifies whitelist of variable names to be expected in global scope.
 *
 * @public
 * @see [CLI option](../#-global-variable-name)
 * @see {@link Mocha#checkLeaks}
 * @param {String[]|String} global - Accepted global variable name(s).
 * @return {Mocha} this
 * @chainable
 * @example
 *
 * // Specify variables to be expected in global scope
 * mocha.global(['jQuery', 'MyLib']);
 */
Mocha.prototype.global = function(global) {
  this.options.global = (this.options.global || [])
    .concat(global)
    .filter(Boolean)
    .filter(function(elt, idx, arr) {
      return arr.indexOf(elt) === idx;
    });
  return this;
};
// for backwards compability, 'globals' is an alias of 'global'
Mocha.prototype.globals = Mocha.prototype.global;

/**
 * Enables or disables TTY color output by screen-oriented reporters.
 *
 * @deprecated since v7.0.0
 * @public
 * @see {@link Mocha#color}
 * @param {boolean} colors - Whether to enable color output.
 * @return {Mocha} this
 * @chainable
 */
Mocha.prototype.useColors = function(colors) {
  utils.deprecate('"useColors()" is DEPRECATED, please use "color()" instead.');
  if (colors !== undefined) {
    this.options.color = colors;
  }
  return this;
};

/**
 * Enables or disables TTY color output by screen-oriented reporters.
 *
 * @public
 * @see [CLI option](../#-color-c-colors)
 * @param {boolean} [color=true] - Whether to enable color output.
 * @return {Mocha} this
 * @chainable
 */
Mocha.prototype.color = function(color) {
  this.options.color = color !== false;
  return this;
};

/**
 * Determines if reporter should use inline diffs (rather than +/-)
 * in test failure output.
 *
 * @deprecated since v7.0.0
 * @public
 * @see {@link Mocha#inlineDiffs}
 * @param {boolean} [inlineDiffs=false] - Whether to use inline diffs.
 * @return {Mocha} this
 * @chainable
 */
Mocha.prototype.useInlineDiffs = function(inlineDiffs) {
  utils.deprecate(
    '"useInlineDiffs()" is DEPRECATED, please use "inlineDiffs()" instead.'
  );
  this.options.inlineDiffs = inlineDiffs !== undefined && inlineDiffs;
  return this;
};

/**
 * Enables or disables reporter to use inline diffs (rather than +/-)
 * in test failure output.
 *
 * @public
 * @see [CLI option](../#-inline-diffs)
 * @param {boolean} [inlineDiffs=true] - Whether to use inline diffs.
 * @return {Mocha} this
 * @chainable
 */
Mocha.prototype.inlineDiffs = function(inlineDiffs) {
  this.options.inlineDiffs = inlineDiffs !== false;
  return this;
};

/**
 * Determines if reporter should include diffs in test failure output.
 *
 * @deprecated since v7.0.0
 * @public
 * @see {@link Mocha#diff}
 * @param {boolean} [hideDiff=false] - Whether to hide diffs.
 * @return {Mocha} this
 * @chainable
 */
Mocha.prototype.hideDiff = function(hideDiff) {
  utils.deprecate('"hideDiff()" is DEPRECATED, please use "diff()" instead.');
  this.options.diff = !(hideDiff === true);
  return this;
};

/**
 * Enables or disables reporter to include diff in test failure output.
 *
 * @public
 * @see [CLI option](../#-diff)
 * @param {boolean} [diff=true] - Whether to show diff on failure.
 * @return {Mocha} this
 * @chainable
 */
Mocha.prototype.diff = function(diff) {
  this.options.diff = diff !== false;
  return this;
};

/**
 * @summary
 * Sets timeout threshold value.
 *
 * @description
 * A string argument can use shorthand (such as "2s") and will be converted.
 * If the value is `0`, timeouts will be disabled.
 *
 * @public
 * @see [CLI option](../#-timeout-ms-t-ms)
 * @see [Timeouts](../#timeouts)
 * @see {@link Mocha#enableTimeouts}
 * @param {number|string} msecs - Timeout threshold value.
 * @return {Mocha} this
 * @chainable
 * @example
 *
 * // Sets timeout to one second
 * mocha.timeout(1000);
 * @example
 *
 * // Same as above but using string argument
 * mocha.timeout('1s');
 */
Mocha.prototype.timeout = function(msecs) {
  this.suite.timeout(msecs);
  return this;
};

/**
 * Sets the number of times to retry failed tests.
 *
 * @public
 * @see [CLI option](../#-retries-n)
 * @see [Retry Tests](../#retry-tests)
 * @param {number} retry - Number of times to retry failed tests.
 * @return {Mocha} this
 * @chainable
 * @example
 *
 * // Allow any failed test to retry one more time
 * mocha.retries(1);
 */
Mocha.prototype.retries = function(n) {
  this.suite.retries(n);
  return this;
};

/**
 * Sets slowness threshold value.
 *
 * @public
 * @see [CLI option](../#-slow-ms-s-ms)
 * @param {number} msecs - Slowness threshold value.
 * @return {Mocha} this
 * @chainable
 * @example
 *
 * // Sets "slow" threshold to half a second
 * mocha.slow(500);
 * @example
 *
 * // Same as above but using string argument
 * mocha.slow('0.5s');
 */
Mocha.prototype.slow = function(msecs) {
  this.suite.slow(msecs);
  return this;
};

/**
 * Enables or disables timeouts.
 *
 * @public
 * @see [CLI option](../#-timeout-ms-t-ms)
 * @param {boolean} enableTimeouts - Whether to enable timeouts.
 * @return {Mocha} this
 * @chainable
 */
Mocha.prototype.enableTimeouts = function(enableTimeouts) {
  this.suite.enableTimeouts(
    arguments.length && enableTimeouts !== undefined ? enableTimeouts : true
  );
  return this;
};

/**
 * Forces all tests to either accept a `done` callback or return a promise.
 *
 * @public
 * @see [CLI option](../#-async-only-a)
 * @param {boolean} [asyncOnly=true] - Wether to force `done` callback or promise.
 * @return {Mocha} this
 * @chainable
 */
Mocha.prototype.asyncOnly = function(asyncOnly) {
  this.options.asyncOnly = asyncOnly !== false;
  return this;
};

/**
 * Disables syntax highlighting (in browser).
 *
 * @public
 * @return {Mocha} this
 * @chainable
 */
Mocha.prototype.noHighlighting = function() {
  this.options.noHighlighting = true;
  return this;
};

/**
 * Enables or disables uncaught errors to propagate.
 *
 * @public
 * @see [CLI option](../#-allow-uncaught)
 * @param {boolean} [allowUncaught=true] - Whether to propagate uncaught errors.
 * @return {Mocha} this
 * @chainable
 */
Mocha.prototype.allowUncaught = function(allowUncaught) {
  this.options.allowUncaught = allowUncaught !== false;
  return this;
};

/**
 * @summary
 * Delays root suite execution.
 *
 * @description
 * Used to perform asynch operations before any suites are run.
 *
 * @public
 * @see [delayed root suite](../#delayed-root-suite)
 * @returns {Mocha} this
 * @chainable
 */
Mocha.prototype.delay = function delay() {
  this.options.delay = true;
  return this;
};

/**
 * Causes tests marked `only` to fail the suite.
 *
 * @public
 * @see [CLI option](../#-forbid-only)
 * @param {boolean} [forbidOnly=true] - Whether tests marked `only` fail the suite.
 * @returns {Mocha} this
 * @chainable
 */
Mocha.prototype.forbidOnly = function(forbidOnly) {
  this.options.forbidOnly = forbidOnly !== false;
  return this;
};

/**
 * Causes pending tests and tests marked `skip` to fail the suite.
 *
 * @public
 * @see [CLI option](../#-forbid-pending)
 * @param {boolean} [forbidPending=true] - Whether pending tests fail the suite.
 * @returns {Mocha} this
 * @chainable
 */
Mocha.prototype.forbidPending = function(forbidPending) {
  this.options.forbidPending = forbidPending !== false;
  return this;
};

/**
 * Mocha version as specified by "package.json".
 *
 * @name Mocha#version
 * @type string
 * @readonly
 */
Object.defineProperty(Mocha.prototype, 'version', {
  value: require('../package.json').version,
  configurable: false,
  enumerable: true,
  writable: false
});

/**
 * Callback to be invoked when test execution is complete.
 *
 * @callback DoneCB
 * @param {number} failures - Number of failures that occurred.
 */

/**
 * Runs root suite and invokes `fn()` when complete.
 *
 * @description
 * To run tests multiple times (or to run tests in files that are
 * already in the `require` cache), make sure to clear them from
 * the cache first!
 *
 * @public
 * @see {@link Mocha#unloadFiles}
 * @see {@link Runner#run}
 * @param {DoneCB} [fn] - Callback invoked when test execution completed.
 * @returns {Runner} runner instance
 * @example
 *
 * // exit with non-zero status if there were test failures
 * mocha.run(failures => process.exitCode = failures ? 1 : 0);
 */
Mocha.prototype.run = function(fn) {
  if (this.files.length && !this.loadAsync) {
    this.loadFiles();
  }
  var suite = this.suite;
  var options = this.options;
  options.files = this.files;
  var runner = new exports.Runner(suite, options.delay);
  createStatsCollector(runner);
  var reporter = new this._reporter(runner, options);
  runner.checkLeaks = options.checkLeaks === true;
  runner.fullStackTrace = options.fullTrace;
  runner.asyncOnly = options.asyncOnly;
  runner.allowUncaught = options.allowUncaught;
  runner.forbidOnly = options.forbidOnly;
  runner.forbidPending = options.forbidPending;
  if (options.grep) {
    runner.grep(options.grep, options.invert);
  }
  if (options.global) {
    runner.globals(options.global);
  }
  if (options.growl) {
    this._growl(runner);
  }
  if (options.color !== undefined) {
    exports.reporters.Base.useColors = options.color;
  }
  exports.reporters.Base.inlineDiffs = options.inlineDiffs;
  exports.reporters.Base.hideDiff = !options.diff;

  function done(failures) {
    fn = fn || utils.noop;
    if (reporter.done) {
      reporter.done(failures, fn);
    } else {
      fn(failures);
    }
  }

  return runner.run(done);
};

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../package.json":90,"./context":5,"./errors":6,"./esm-utils":42,"./growl":2,"./hook":7,"./interfaces":11,"./mocharc.json":15,"./reporters":21,"./runnable":33,"./runner":34,"./stats-collector":35,"./suite":36,"./test":37,"./utils":38,"_process":69,"escape-string-regexp":49,"path":42}],15:[function(require,module,exports){
module.exports={
  "diff": true,
  "extension": ["js", "cjs", "mjs"],
  "opts": "./test/mocha.opts",
  "package": "./package.json",
  "reporter": "spec",
  "slow": 75,
  "timeout": 2000,
  "ui": "bdd",
  "watch-ignore": ["node_modules", ".git"]
}

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

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){
'use strict';
/**
 * @module Base
 */
/**
 * Module dependencies.
 */

var tty = require('tty');
var diff = require('diff');
var milliseconds = require('ms');
var utils = require('../utils');
var supportsColor = process.browser ? null : require('supports-color');
var constants = require('../runner').constants;
var EVENT_TEST_PASS = constants.EVENT_TEST_PASS;
var EVENT_TEST_FAIL = constants.EVENT_TEST_FAIL;

/**
 * Expose `Base`.
 */

exports = module.exports = Base;

/**
 * Check if both stdio streams are associated with a tty.
 */

var isatty = process.stdout.isTTY && process.stderr.isTTY;

/**
 * Save log references to avoid tests interfering (see GH-3604).
 */
var consoleLog = console.log;

/**
 * Enable coloring by default, except in the browser interface.
 */

exports.useColors =
  !process.browser &&
  (supportsColor.stdout || process.env.MOCHA_COLORS !== undefined);

/**
 * Inline diffs instead of +/-
 */

exports.inlineDiffs = false;

/**
 * Default color map.
 */

exports.colors = {
  pass: 90,
  fail: 31,
  'bright pass': 92,
  'bright fail': 91,
  'bright yellow': 93,
  pending: 36,
  suite: 0,
  'error title': 0,
  'error message': 31,
  'error stack': 90,
  checkmark: 32,
  fast: 90,
  medium: 33,
  slow: 31,
  green: 32,
  light: 90,
  'diff gutter': 90,
  'diff added': 32,
  'diff removed': 31
};

/**
 * Default symbol map.
 */

exports.symbols = {
  ok: '✓',
  err: '✖',
  dot: '․',
  comma: ',',
  bang: '!'
};

// With node.js on Windows: use symbols available in terminal default fonts
if (process.platform === 'win32') {
  exports.symbols.ok = '\u221A';
  exports.symbols.err = '\u00D7';
  exports.symbols.dot = '.';
}

/**
 * Color `str` with the given `type`,
 * allowing colors to be disabled,
 * as well as user-defined color
 * schemes.
 *
 * @private
 * @param {string} type
 * @param {string} str
 * @return {string}
 */
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');
    }
  }
};

var showDiff = (exports.showDiff = function(err) {
  return (
    err &&
    err.showDiff !== false &&
    sameType(err.actual, err.expected) &&
    err.expected !== undefined
  );
});

function stringifyDiffObjs(err) {
  if (!utils.isString(err.actual) || !utils.isString(err.expected)) {
    err.actual = utils.stringify(err.actual);
    err.expected = utils.stringify(err.expected);
  }
}

/**
 * Returns a diff between 2 strings with coloured ANSI output.
 *
 * @description
 * The diff will be either inline or unified dependent on the value
 * of `Base.inlineDiff`.
 *
 * @param {string} actual
 * @param {string} expected
 * @return {string} Diff
 */
var generateDiff = (exports.generateDiff = function(actual, expected) {
  try {
    return exports.inlineDiffs
      ? inlineDiff(actual, expected)
      : unifiedDiff(actual, expected);
  } catch (err) {
    var msg =
      '\n      ' +
      color('diff added', '+ expected') +
      ' ' +
      color('diff removed', '- actual:  failed to generate Mocha diff') +
      '\n';
    return msg;
  }
});

/**
 * Outputs the given `failures` as a list.
 *
 * @public
 * @memberof Mocha.reporters.Base
 * @variation 1
 * @param {Object[]} failures - Each is Test instance with corresponding
 *     Error property
 */
exports.list = function(failures) {
  var multipleErr, multipleTest;
  Base.consoleLog();
  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;
    if (test.err && test.err.multiple) {
      if (multipleTest !== test) {
        multipleTest = test;
        multipleErr = [test.err].concat(test.err.multiple);
      }
      err = multipleErr.shift();
    } else {
      err = test.err;
    }
    var message;
    if (err.message && typeof err.message.toString === 'function') {
      message = err.message + '';
    } else if (typeof err.inspect === 'function') {
      message = err.inspect() + '';
    } else {
      message = '';
    }
    var stack = err.stack || message;
    var index = message ? stack.indexOf(message) : -1;

    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 (!exports.hideDiff && showDiff(err)) {
      stringifyDiffObjs(err);
      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);

      msg += generateDiff(err.actual, err.expected);
    }

    // indent stack trace
    stack = stack.replace(/^/gm, '  ');

    // indented test title
    var testTitle = '';
    test.titlePath().forEach(function(str, index) {
      if (index !== 0) {
        testTitle += '\n     ';
      }
      for (var i = 0; i < index; i++) {
        testTitle += '  ';
      }
      testTitle += str;
    });

    Base.consoleLog(fmt, i + 1, testTitle, msg, stack);
  });
};

/**
 * Constructs a new `Base` reporter instance.
 *
 * @description
 * All other reporters generally inherit from this reporter.
 *
 * @public
 * @class
 * @memberof Mocha.reporters
 * @param {Runner} runner - Instance triggers reporter actions.
 * @param {Object} [options] - runner options
 */
function Base(runner, options) {
  var failures = (this.failures = []);

  if (!runner) {
    throw new TypeError('Missing runner argument');
  }
  this.options = options || {};
  this.runner = runner;
  this.stats = runner.stats; // assigned so Reporters keep a closer reference

  runner.on(EVENT_TEST_PASS, function(test) {
    if (test.duration > test.slow()) {
      test.speed = 'slow';
    } else if (test.duration > test.slow() / 2) {
      test.speed = 'medium';
    } else {
      test.speed = 'fast';
    }
  });

  runner.on(EVENT_TEST_FAIL, function(test, err) {
    if (showDiff(err)) {
      stringifyDiffObjs(err);
    }
    // more than one error per test
    if (test.err && err instanceof Error) {
      test.err.multiple = (test.err.multiple || []).concat(err);
    } else {
      test.err = err;
    }
    failures.push(test);
  });
}

/**
 * Outputs common epilogue used by many of the bundled reporters.
 *
 * @public
 * @memberof Mocha.reporters
 */
Base.prototype.epilogue = function() {
  var stats = this.stats;
  var fmt;

  Base.consoleLog();

  // passes
  fmt =
    color('bright pass', ' ') +
    color('green', ' %d passing') +
    color('light', ' (%s)');

  Base.consoleLog(fmt, stats.passes || 0, milliseconds(stats.duration));

  // pending
  if (stats.pending) {
    fmt = color('pending', ' ') + color('pending', ' %d pending');

    Base.consoleLog(fmt, stats.pending);
  }

  // failures
  if (stats.failures) {
    fmt = color('fail', '  %d failing');

    Base.consoleLog(fmt, stats.failures);

    Base.list(this.failures);
    Base.consoleLog();
  }

  Base.consoleLog();
};

/**
 * Pads the given `str` to `len`.
 *
 * @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 inline diff between 2 strings with coloured ANSI output.
 *
 * @private
 * @param {String} actual
 * @param {String} expected
 * @return {string} Diff
 */
function inlineDiff(actual, expected) {
  var msg = errorDiff(actual, expected);

  // 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 unified diff between two strings with coloured ANSI output.
 *
 * @private
 * @param {String} actual
 * @param {String} expected
 * @return {string} The diff.
 */
function unifiedDiff(actual, expected) {
  var indent = '      ';
  function cleanUp(line) {
    if (line[0] === '+') {
      return indent + colorLines('diff added', line);
    }
    if (line[0] === '-') {
      return indent + colorLines('diff removed', line);
    }
    if (line.match(/@@/)) {
      return '--';
    }
    if (line.match(/\\ No newline/)) {
      return null;
    }
    return indent + line;
  }
  function notBlank(line) {
    return typeof line !== 'undefined' && line !== null;
  }
  var msg = diff.createPatch('string', actual, expected);
  var lines = msg.split('\n').splice(5);
  return (
    '\n      ' +
    colorLines('diff added', '+ expected') +
    ' ' +
    colorLines('diff removed', '- actual') +
    '\n\n' +
    lines
      .map(cleanUp)
      .filter(notBlank)
      .join('\n')
  );
}

/**
 * Returns character diff for `err`.
 *
 * @private
 * @param {String} actual
 * @param {String} expected
 * @return {string} the diff
 */
function errorDiff(actual, expected) {
  return diff
    .diffWordsWithSpace(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('');
}

/**
 * Colors lines for `str`, using the color `name`.
 *
 * @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;

/**
 * Checks that a / b have the same type.
 *
 * @private
 * @param {Object} a
 * @param {Object} b
 * @return {boolean}
 */
function sameType(a, b) {
  return objToString.call(a) === objToString.call(b);
}

Base.consoleLog = consoleLog;

Base.abstract = true;

}).call(this,require('_process'))
},{"../runner":34,"../utils":38,"_process":69,"diff":48,"ms":60,"supports-color":42,"tty":4}],18:[function(require,module,exports){
'use strict';
/**
 * @module Doc
 */
/**
 * Module dependencies.
 */

var Base = require('./base');
var utils = require('../utils');
var constants = require('../runner').constants;
var EVENT_TEST_PASS = constants.EVENT_TEST_PASS;
var EVENT_TEST_FAIL = constants.EVENT_TEST_FAIL;
var EVENT_SUITE_BEGIN = constants.EVENT_SUITE_BEGIN;
var EVENT_SUITE_END = constants.EVENT_SUITE_END;

/**
 * Expose `Doc`.
 */

exports = module.exports = Doc;

/**
 * Constructs a new `Doc` reporter instance.
 *
 * @public
 * @class
 * @memberof Mocha.reporters
 * @extends Mocha.reporters.Base
 * @param {Runner} runner - Instance triggers reporter actions.
 * @param {Object} [options] - runner options
 */
function Doc(runner, options) {
  Base.call(this, runner, options);

  var indents = 2;

  function indent() {
    return Array(indents).join('  ');
  }

  runner.on(EVENT_SUITE_BEGIN, function(suite) {
    if (suite.root) {
      return;
    }
    ++indents;
    Base.consoleLog('%s<section class="suite">', indent());
    ++indents;
    Base.consoleLog('%s<h1>%s</h1>', indent(), utils.escape(suite.title));
    Base.consoleLog('%s<dl>', indent());
  });

  runner.on(EVENT_SUITE_END, function(suite) {
    if (suite.root) {
      return;
    }
    Base.consoleLog('%s</dl>', indent());
    --indents;
    Base.consoleLog('%s</section>', indent());
    --indents;
  });

  runner.on(EVENT_TEST_PASS, function(test) {
    Base.consoleLog('%s  <dt>%s</dt>', indent(), utils.escape(test.title));
    var code = utils.escape(utils.clean(test.body));
    Base.consoleLog('%s  <dd><pre><code>%s</code></pre></dd>', indent(), code);
  });

  runner.on(EVENT_TEST_FAIL, function(test, err) {
    Base.consoleLog(
      '%s  <dt class="error">%s</dt>',
      indent(),
      utils.escape(test.title)
    );
    var code = utils.escape(utils.clean(test.body));
    Base.consoleLog(
      '%s  <dd class="error"><pre><code>%s</code></pre></dd>',
      indent(),
      code
    );
    Base.consoleLog(
      '%s  <dd class="error">%s</dd>',
      indent(),
      utils.escape(err)
    );
  });
}

Doc.description = 'HTML documentation';

},{"../runner":34,"../utils":38,"./base":17}],19:[function(require,module,exports){
(function (process){
'use strict';
/**
 * @module Dot
 */
/**
 * Module dependencies.
 */

var Base = require('./base');
var inherits = require('../utils').inherits;
var constants = require('../runner').constants;
var EVENT_TEST_PASS = constants.EVENT_TEST_PASS;
var EVENT_TEST_FAIL = constants.EVENT_TEST_FAIL;
var EVENT_RUN_BEGIN = constants.EVENT_RUN_BEGIN;
var EVENT_TEST_PENDING = constants.EVENT_TEST_PENDING;
var EVENT_RUN_END = constants.EVENT_RUN_END;

/**
 * Expose `Dot`.
 */

exports = module.exports = Dot;

/**
 * Constructs a new `Dot` reporter instance.
 *
 * @public
 * @class
 * @memberof Mocha.reporters
 * @extends Mocha.reporters.Base
 * @param {Runner} runner - Instance triggers reporter actions.
 * @param {Object} [options] - runner options
 */
function Dot(runner, options) {
  Base.call(this, runner, options);

  var self = this;
  var width = (Base.window.width * 0.75) | 0;
  var n = -1;

  runner.on(EVENT_RUN_BEGIN, function() {
    process.stdout.write('\n');
  });

  runner.on(EVENT_TEST_PENDING, function() {
    if (++n % width === 0) {
      process.stdout.write('\n  ');
    }
    process.stdout.write(Base.color('pending', Base.symbols.comma));
  });

  runner.on(EVENT_TEST_PASS, function(test) {
    if (++n % width === 0) {
      process.stdout.write('\n  ');
    }
    if (test.speed === 'slow') {
      process.stdout.write(Base.color('bright yellow', Base.symbols.dot));
    } else {
      process.stdout.write(Base.color(test.speed, Base.symbols.dot));
    }
  });

  runner.on(EVENT_TEST_FAIL, function() {
    if (++n % width === 0) {
      process.stdout.write('\n  ');
    }
    process.stdout.write(Base.color('fail', Base.symbols.bang));
  });

  runner.once(EVENT_RUN_END, function() {
    process.stdout.write('\n');
    self.epilogue();
  });
}

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

Dot.description = 'dot matrix representation';

}).call(this,require('_process'))
},{"../runner":34,"../utils":38,"./base":17,"_process":69}],20:[function(require,module,exports){
(function (global){
'use strict';

/* eslint-env browser */
/**
 * @module HTML
 */
/**
 * Module dependencies.
 */

var Base = require('./base');
var utils = require('../utils');
var Progress = require('../browser/progress');
var escapeRe = require('escape-string-regexp');
var constants = require('../runner').constants;
var EVENT_TEST_PASS = constants.EVENT_TEST_PASS;
var EVENT_TEST_FAIL = constants.EVENT_TEST_FAIL;
var EVENT_SUITE_BEGIN = constants.EVENT_SUITE_BEGIN;
var EVENT_SUITE_END = constants.EVENT_SUITE_END;
var EVENT_TEST_PENDING = constants.EVENT_TEST_PENDING;
var escape = utils.escape;

/**
 * Save timer references to avoid Sinon interfering (see GH-237).
 */

var Date = global.Date;

/**
 * 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>';

var playIcon = '&#x2023;';

/**
 * Constructs a new `HTML` reporter instance.
 *
 * @public
 * @class
 * @memberof Mocha.reporters
 * @extends Mocha.reporters.Base
 * @param {Runner} runner - Instance triggers reporter actions.
 * @param {Object} [options] - runner options
 */
function HTML(runner, options) {
  Base.call(this, runner, options);

  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(EVENT_SUITE_BEGIN, 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(EVENT_SUITE_END, function(suite) {
    if (suite.root) {
      updateStats();
      return;
    }
    stack.shift();
  });

  runner.on(EVENT_TEST_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">' +
      playIcon +
      '</a></h2></li>';
    var el = fragment(markup, test.speed, test.title, test.duration, url);
    self.addCodeToggle(el, test.body);
    appendToStack(el);
    updateStats();
  });

  runner.on(EVENT_TEST_FAIL, function(test) {
    var el = fragment(
      '<li class="test fail"><h2>%e <a href="%e" class="replay">' +
        playIcon +
        '</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(EVENT_TEST_PENDING, function(test) {
    var el = fragment(
      '<li class="test pass pending"><h2>%e</h2></li>',
      test.title
    );
    appendToStack(el);
    updateStats();
  });

  function appendToStack(el) {
    // Don't call .appendChild if #mocha-report was already .shift()'ed off the stack.
    if (stack[0]) {
      stack[0].appendChild(el);
    }
  }

  function updateStats() {
    // TODO: add to stats
    var percent = ((stats.tests / runner.total) * 100) | 0;
    if (progress) {
      progress.update(percent).draw(ctx);
    }

    // update stats
    var ms = new Date() - stats.start;
    text(passes, stats.passes);
    text(failures, stats.failures);
    text(duration, (ms / 1000).toFixed(2));
  }
}

/**
 * Makes a URL, preserving querystring ("search") parameters.
 *
 * @param {string} s
 * @return {string} A new URL.
 */
function makeUrl(s) {
  var search = window.location.search;

  // Remove previous grep query parameter if present
  if (search) {
    search = search.replace(/[?&]grep=[^&\s]*/g, '').replace(/^&/, '?');
  }

  return (
    window.location.pathname +
    (search ? search + '&' : '?') +
    'grep=' +
    encodeURIComponent(escapeRe(s))
  );
}

/**
 * Provide suite URL.
 *
 * @param {Object} [suite]
 */
HTML.prototype.suiteURL = function(suite) {
  return makeUrl(suite.fullTitle());
};

/**
 * Provide test URL.
 *
 * @param {Object} [test]
 */
HTML.prototype.testURL = function(test) {
  return makeUrl(test.fullTitle());
};

/**
 * Adds code toggle functionality for the provided test's list element.
 *
 * @param {HTMLLIElement} el
 * @param {string} contents
 */
HTML.prototype.addCodeToggle = function(el, contents) {
  var h2 = el.getElementsByTagName('h2')[0];

  on(h2, 'click', function() {
    pre.style.display = pre.style.display === 'none' ? 'block' : 'none';
  });

  var pre = fragment('<pre><code>%e</code></pre>', utils.clean(contents));
  el.appendChild(pre);
  pre.style.display = 'none';
};

/**
 * Display error `msg`.
 *
 * @param {string} msg
 */
function error(msg) {
  document.body.appendChild(fragment('<div id="mocha-error">%s</div>', msg));
}

/**
 * Return a DOM fragment from `html`.
 *
 * @param {string} html
 */
function fragment(html) {
  var args = arguments;
  var div = document.createElement('div');
  var i = 1;

  div.innerHTML = html.replace(/%([se])/g, function(_, type) {
    switch (type) {
      case 's':
        return String(args[i++]);
      case 'e':
        return escape(args[i++]);
      // no default
    }
  });

  return div.firstChild;
}

/**
 * Check for suites that do not have elements
 * with `classname`, and hide them.
 *
 * @param {text} classname
 */
function hideSuitesWithout(classname) {
  var suites = document.getElementsByClassName('suite');
  for (var i = 0; i < suites.length; i++) {
    var els = suites[i].getElementsByClassName(classname);
    if (!els.length) {
      suites[i].className += ' hidden';
    }
  }
}

/**
 * Unhide .hidden suites.
 */
function unhide() {
  var els = document.getElementsByClassName('suite hidden');
  while (els.length > 0) {
    els[0].className = els[0].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);
  }
}

HTML.browserOnly = true;

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../browser/progress":3,"../runner":34,"../utils":38,"./base":17,"escape-string-regexp":49}],21:[function(require,module,exports){
'use strict';

// Alias exports to a their normalized format Mocha#reporter to prevent a need
// for dynamic (try/catch) requires, which Browserify doesn't handle.
exports.Base = exports.base = require('./base');
exports.Dot = exports.dot = require('./dot');
exports.Doc = exports.doc = require('./doc');
exports.TAP = exports.tap = require('./tap');
exports.JSON = exports.json = require('./json');
exports.HTML = exports.html = require('./html');
exports.List = exports.list = require('./list');
exports.Min = exports.min = require('./min');
exports.Spec = exports.spec = require('./spec');
exports.Nyan = exports.nyan = require('./nyan');
exports.XUnit = exports.xunit = require('./xunit');
exports.Markdown = exports.markdown = require('./markdown');
exports.Progress = exports.progress = require('./progress');
exports.Landing = exports.landing = require('./landing');
exports.JSONStream = exports['json-stream'] = require('./json-stream');

},{"./base":17,"./doc":18,"./dot":19,"./html":20,"./json":23,"./json-stream":22,"./landing":24,"./list":25,"./markdown":26,"./min":27,"./nyan":28,"./progress":29,"./spec":30,"./tap":31,"./xunit":32}],22:[function(require,module,exports){
(function (process){
'use strict';
/**
 * @module JSONStream
 */
/**
 * Module dependencies.
 */

var Base = require('./base');
var constants = require('../runner').constants;
var EVENT_TEST_PASS = constants.EVENT_TEST_PASS;
var EVENT_TEST_FAIL = constants.EVENT_TEST_FAIL;
var EVENT_RUN_BEGIN = constants.EVENT_RUN_BEGIN;
var EVENT_RUN_END = constants.EVENT_RUN_END;

/**
 * Expose `JSONStream`.
 */

exports = module.exports = JSONStream;

/**
 * Constructs a new `JSONStream` reporter instance.
 *
 * @public
 * @class
 * @memberof Mocha.reporters
 * @extends Mocha.reporters.Base
 * @param {Runner} runner - Instance triggers reporter actions.
 * @param {Object} [options] - runner options
 */
function JSONStream(runner, options) {
  Base.call(this, runner, options);

  var self = this;
  var total = runner.total;

  runner.once(EVENT_RUN_BEGIN, function() {
    writeEvent(['start', {total: total}]);
  });

  runner.on(EVENT_TEST_PASS, function(test) {
    writeEvent(['pass', clean(test)]);
  });

  runner.on(EVENT_TEST_FAIL, function(test, err) {
    test = clean(test);
    test.err = err.message;
    test.stack = err.stack || null;
    writeEvent(['fail', test]);
  });

  runner.once(EVENT_RUN_END, function() {
    writeEvent(['end', self.stats]);
  });
}

/**
 * Mocha event to be written to the output stream.
 * @typedef {Array} JSONStream~MochaEvent
 */

/**
 * Writes Mocha event to reporter output stream.
 *
 * @private
 * @param {JSONStream~MochaEvent} event - Mocha event to be output.
 */
function writeEvent(event) {
  process.stdout.write(JSON.stringify(event) + '\n');
}

/**
 * Returns an object literal representation of `test`
 * free of cyclic properties, etc.
 *
 * @private
 * @param {Test} test - Instance used as data source.
 * @return {Object} object containing pared-down test instance data
 */
function clean(test) {
  return {
    title: test.title,
    fullTitle: test.fullTitle(),
    duration: test.duration,
    currentRetry: test.currentRetry()
  };
}

JSONStream.description = 'newline delimited JSON events';

}).call(this,require('_process'))
},{"../runner":34,"./base":17,"_process":69}],23:[function(require,module,exports){
(function (process){
'use strict';
/**
 * @module JSON
 */
/**
 * Module dependencies.
 */

var Base = require('./base');
var constants = require('../runner').constants;
var EVENT_TEST_PASS = constants.EVENT_TEST_PASS;
var EVENT_TEST_FAIL = constants.EVENT_TEST_FAIL;
var EVENT_TEST_END = constants.EVENT_TEST_END;
var EVENT_RUN_END = constants.EVENT_RUN_END;
var EVENT_TEST_PENDING = constants.EVENT_TEST_PENDING;

/**
 * Expose `JSON`.
 */

exports = module.exports = JSONReporter;

/**
 * Constructs a new `JSON` reporter instance.
 *
 * @public
 * @class JSON
 * @memberof Mocha.reporters
 * @extends Mocha.reporters.Base
 * @param {Runner} runner - Instance triggers reporter actions.
 * @param {Object} [options] - runner options
 */
function JSONReporter(runner, options) {
  Base.call(this, runner, options);

  var self = this;
  var tests = [];
  var pending = [];
  var failures = [];
  var passes = [];

  runner.on(EVENT_TEST_END, function(test) {
    tests.push(test);
  });

  runner.on(EVENT_TEST_PASS, function(test) {
    passes.push(test);
  });

  runner.on(EVENT_TEST_FAIL, function(test) {
    failures.push(test);
  });

  runner.on(EVENT_TEST_PENDING, function(test) {
    pending.push(test);
  });

  runner.once(EVENT_RUN_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.
 *
 * @private
 * @param {Object} test
 * @return {Object}
 */
function clean(test) {
  var err = test.err || {};
  if (err instanceof Error) {
    err = errorJSON(err);
  }

  return {
    title: test.title,
    fullTitle: test.fullTitle(),
    duration: test.duration,
    currentRetry: test.currentRetry(),
    err: cleanCycles(err)
  };
}

/**
 * Replaces any circular references inside `obj` with '[object Object]'
 *
 * @private
 * @param {Object} obj
 * @return {Object}
 */
function cleanCycles(obj) {
  var cache = [];
  return JSON.parse(
    JSON.stringify(obj, function(key, value) {
      if (typeof value === 'object' && value !== null) {
        if (cache.indexOf(value) !== -1) {
          // Instead of going in a circle, we'll print [object Object]
          return '' + value;
        }
        cache.push(value);
      }

      return value;
    })
  );
}

/**
 * Transform an Error object into a JSON object.
 *
 * @private
 * @param {Error} err
 * @return {Object}
 */
function errorJSON(err) {
  var res = {};
  Object.getOwnPropertyNames(err).forEach(function(key) {
    res[key] = err[key];
  }, err);
  return res;
}

JSONReporter.description = 'single JSON object';

}).call(this,require('_process'))
},{"../runner":34,"./base":17,"_process":69}],24:[function(require,module,exports){
(function (process){
'use strict';
/**
 * @module Landing
 */
/**
 * Module dependencies.
 */

var Base = require('./base');
var inherits = require('../utils').inherits;
var constants = require('../runner').constants;
var EVENT_RUN_BEGIN = constants.EVENT_RUN_BEGIN;
var EVENT_RUN_END = constants.EVENT_RUN_END;
var EVENT_TEST_END = constants.EVENT_TEST_END;
var STATE_FAILED = require('../runnable').constants.STATE_FAILED;

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;

/**
 * Constructs a new `Landing` reporter instance.
 *
 * @public
 * @class
 * @memberof Mocha.reporters
 * @extends Mocha.reporters.Base
 * @param {Runner} runner - Instance triggers reporter actions.
 * @param {Object} [options] - runner options
 */
function Landing(runner, options) {
  Base.call(this, runner, options);

  var self = this;
  var width = (Base.window.width * 0.75) | 0;
  var total = runner.total;
  var stream = process.stdout;
  var plane = color('plane', '✈');
  var crashed = -1;
  var n = 0;

  function runway() {
    var buf = Array(width).join('-');
    return '  ' + color('runway', buf);
  }

  runner.on(EVENT_RUN_BEGIN, function() {
    stream.write('\n\n\n  ');
    cursor.hide();
  });

  runner.on(EVENT_TEST_END, function(test) {
    // check if the plane crashed
    var col = crashed === -1 ? ((width * ++n) / total) | 0 : crashed;

    // show the crash
    if (test.state === 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.once(EVENT_RUN_END, function() {
    cursor.show();
    process.stdout.write('\n');
    self.epilogue();
  });
}

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

Landing.description = 'Unicode landing strip';

}).call(this,require('_process'))
},{"../runnable":33,"../runner":34,"../utils":38,"./base":17,"_process":69}],25:[function(require,module,exports){
(function (process){
'use strict';
/**
 * @module List
 */
/**
 * Module dependencies.
 */

var Base = require('./base');
var inherits = require('../utils').inherits;
var constants = require('../runner').constants;
var EVENT_RUN_BEGIN = constants.EVENT_RUN_BEGIN;
var EVENT_RUN_END = constants.EVENT_RUN_END;
var EVENT_TEST_BEGIN = constants.EVENT_TEST_BEGIN;
var EVENT_TEST_FAIL = constants.EVENT_TEST_FAIL;
var EVENT_TEST_PASS = constants.EVENT_TEST_PASS;
var EVENT_TEST_PENDING = constants.EVENT_TEST_PENDING;
var color = Base.color;
var cursor = Base.cursor;

/**
 * Expose `List`.
 */

exports = module.exports = List;

/**
 * Constructs a new `List` reporter instance.
 *
 * @public
 * @class
 * @memberof Mocha.reporters
 * @extends Mocha.reporters.Base
 * @param {Runner} runner - Instance triggers reporter actions.
 * @param {Object} [options] - runner options
 */
function List(runner, options) {
  Base.call(this, runner, options);

  var self = this;
  var n = 0;

  runner.on(EVENT_RUN_BEGIN, function() {
    Base.consoleLog();
  });

  runner.on(EVENT_TEST_BEGIN, function(test) {
    process.stdout.write(color('pass', '    ' + test.fullTitle() + ': '));
  });

  runner.on(EVENT_TEST_PENDING, function(test) {
    var fmt = color('checkmark', '  -') + color('pending', ' %s');
    Base.consoleLog(fmt, test.fullTitle());
  });

  runner.on(EVENT_TEST_PASS, function(test) {
    var fmt =
      color('checkmark', '  ' + Base.symbols.ok) +
      color('pass', ' %s: ') +
      color(test.speed, '%dms');
    cursor.CR();
    Base.consoleLog(fmt, test.fullTitle(), test.duration);
  });

  runner.on(EVENT_TEST_FAIL, function(test) {
    cursor.CR();
    Base.consoleLog(color('fail', '  %d) %s'), ++n, test.fullTitle());
  });

  runner.once(EVENT_RUN_END, self.epilogue.bind(self));
}

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

List.description = 'like "spec" reporter but flat';

}).call(this,require('_process'))
},{"../runner":34,"../utils":38,"./base":17,"_process":69}],26:[function(require,module,exports){
(function (process){
'use strict';
/**
 * @module Markdown
 */
/**
 * Module dependencies.
 */

var Base = require('./base');
var utils = require('../utils');
var constants = require('../runner').constants;
var EVENT_RUN_END = constants.EVENT_RUN_END;
var EVENT_SUITE_BEGIN = constants.EVENT_SUITE_BEGIN;
var EVENT_SUITE_END = constants.EVENT_SUITE_END;
var EVENT_TEST_PASS = constants.EVENT_TEST_PASS;

/**
 * Constants
 */

var SUITE_PREFIX = '$';

/**
 * Expose `Markdown`.
 */

exports = module.exports = Markdown;

/**
 * Constructs a new `Markdown` reporter instance.
 *
 * @public
 * @class
 * @memberof Mocha.reporters
 * @extends Mocha.reporters.Base
 * @param {Runner} runner - Instance triggers reporter actions.
 * @param {Object} [options] - runner options
 */
function Markdown(runner, options) {
  Base.call(this, runner, options);

  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(EVENT_SUITE_BEGIN, function(suite) {
    ++level;
    var slug = utils.slug(suite.fullTitle());
    buf += '<a name="' + slug + '"></a>' + '\n';
    buf += title(suite.title) + '\n';
  });

  runner.on(EVENT_SUITE_END, function() {
    --level;
  });

  runner.on(EVENT_TEST_PASS, function(test) {
    var code = utils.clean(test.body);
    buf += test.title + '.\n';
    buf += '\n```js\n';
    buf += code + '\n';
    buf += '```\n\n';
  });

  runner.once(EVENT_RUN_END, function() {
    process.stdout.write('# TOC\n');
    process.stdout.write(generateTOC(runner.suite));
    process.stdout.write(buf);
  });
}

Markdown.description = 'GitHub Flavored Markdown';

}).call(this,require('_process'))
},{"../runner":34,"../utils":38,"./base":17,"_process":69}],27:[function(require,module,exports){
(function (process){
'use strict';
/**
 * @module Min
 */
/**
 * Module dependencies.
 */

var Base = require('./base');
var inherits = require('../utils').inherits;
var constants = require('../runner').constants;
var EVENT_RUN_END = constants.EVENT_RUN_END;
var EVENT_RUN_BEGIN = constants.EVENT_RUN_BEGIN;

/**
 * Expose `Min`.
 */

exports = module.exports = Min;

/**
 * Constructs a new `Min` reporter instance.
 *
 * @description
 * This minimal test reporter is best used with '--watch'.
 *
 * @public
 * @class
 * @memberof Mocha.reporters
 * @extends Mocha.reporters.Base
 * @param {Runner} runner - Instance triggers reporter actions.
 * @param {Object} [options] - runner options
 */
function Min(runner, options) {
  Base.call(this, runner, options);

  runner.on(EVENT_RUN_BEGIN, function() {
    // clear screen
    process.stdout.write('\u001b[2J');
    // set cursor position
    process.stdout.write('\u001b[1;3H');
  });

  runner.once(EVENT_RUN_END, this.epilogue.bind(this));
}

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

Min.description = 'essentially just a summary';

}).call(this,require('_process'))
},{"../runner":34,"../utils":38,"./base":17,"_process":69}],28:[function(require,module,exports){
(function (process){
'use strict';
/**
 * @module Nyan
 */
/**
 * Module dependencies.
 */

var Base = require('./base');
var constants = require('../runner').constants;
var inherits = require('../utils').inherits;
var EVENT_RUN_BEGIN = constants.EVENT_RUN_BEGIN;
var EVENT_TEST_PENDING = constants.EVENT_TEST_PENDING;
var EVENT_TEST_PASS = constants.EVENT_TEST_PASS;
var EVENT_RUN_END = constants.EVENT_RUN_END;
var EVENT_TEST_FAIL = constants.EVENT_TEST_FAIL;

/**
 * Expose `Dot`.
 */

exports = module.exports = NyanCat;

/**
 * Constructs a new `Nyan` reporter instance.
 *
 * @public
 * @class Nyan
 * @memberof Mocha.reporters
 * @extends Mocha.reporters.Base
 * @param {Runner} runner - Instance triggers reporter actions.
 * @param {Object} [options] - runner options
 */
function NyanCat(runner, options) {
  Base.call(this, runner, options);

  var self = this;
  var width = (Base.window.width * 0.75) | 0;
  var nyanCatWidth = (this.nyanCatWidth = 11);

  this.colorIndex = 0;
  this.numberOfLines = 4;
  this.rainbowColors = self.generateColors();
  this.scoreboardWidth = 5;
  this.tick = 0;
  this.trajectories = [[], [], [], []];
  this.trajectoryWidthMax = width - nyanCatWidth;

  runner.on(EVENT_RUN_BEGIN, function() {
    Base.cursor.hide();
    self.draw();
  });

  runner.on(EVENT_TEST_PENDING, function() {
    self.draw();
  });

  runner.on(EVENT_TEST_PASS, function() {
    self.draw();
  });

  runner.on(EVENT_TEST_FAIL, function() {
    self.draw();
  });

  runner.once(EVENT_RUN_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
 *
 * @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.
 *
 * @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.
 *
 * @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.
 *
 * @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
 *
 * @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.
 *
 * @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`.
 *
 * @private
 * @param {number} n
 */

NyanCat.prototype.cursorUp = function(n) {
  write('\u001b[' + n + 'A');
};

/**
 * Move cursor down `n`.
 *
 * @private
 * @param {number} n
 */

NyanCat.prototype.cursorDown = function(n) {
  write('\u001b[' + n + 'B');
};

/**
 * Generate rainbow colors.
 *
 * @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`.
 *
 * @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);
}

NyanCat.description = '"nyan cat"';

}).call(this,require('_process'))
},{"../runner":34,"../utils":38,"./base":17,"_process":69}],29:[function(require,module,exports){
(function (process){
'use strict';
/**
 * @module Progress
 */
/**
 * Module dependencies.
 */

var Base = require('./base');
var constants = require('../runner').constants;
var EVENT_RUN_BEGIN = constants.EVENT_RUN_BEGIN;
var EVENT_TEST_END = constants.EVENT_TEST_END;
var EVENT_RUN_END = constants.EVENT_RUN_END;
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;

/**
 * Constructs a new `Progress` reporter instance.
 *
 * @public
 * @class
 * @memberof Mocha.reporters
 * @extends Mocha.reporters.Base
 * @param {Runner} runner - Instance triggers reporter actions.
 * @param {Object} [options] - runner options
 */
function Progress(runner, options) {
  Base.call(this, runner, options);

  var self = this;
  var width = (Base.window.width * 0.5) | 0;
  var total = runner.total;
  var complete = 0;
  var lastN = -1;

  // default chars
  options = options || {};
  var reporterOptions = options.reporterOptions || {};

  options.open = reporterOptions.open || '[';
  options.complete = reporterOptions.complete || '▬';
  options.incomplete = reporterOptions.incomplete || Base.symbols.dot;
  options.close = reporterOptions.close || ']';
  options.verbose = reporterOptions.verbose || false;

  // tests started
  runner.on(EVENT_RUN_BEGIN, function() {
    process.stdout.write('\n');
    cursor.hide();
  });

  // tests complete
  runner.on(EVENT_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.once(EVENT_RUN_END, function() {
    cursor.show();
    process.stdout.write('\n');
    self.epilogue();
  });
}

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

Progress.description = 'a progress bar';

}).call(this,require('_process'))
},{"../runner":34,"../utils":38,"./base":17,"_process":69}],30:[function(require,module,exports){
'use strict';
/**
 * @module Spec
 */
/**
 * Module dependencies.
 */

var Base = require('./base');
var constants = require('../runner').constants;
var EVENT_RUN_BEGIN = constants.EVENT_RUN_BEGIN;
var EVENT_RUN_END = constants.EVENT_RUN_END;
var EVENT_SUITE_BEGIN = constants.EVENT_SUITE_BEGIN;
var EVENT_SUITE_END = constants.EVENT_SUITE_END;
var EVENT_TEST_FAIL = constants.EVENT_TEST_FAIL;
var EVENT_TEST_PASS = constants.EVENT_TEST_PASS;
var EVENT_TEST_PENDING = constants.EVENT_TEST_PENDING;
var inherits = require('../utils').inherits;
var color = Base.color;

/**
 * Expose `Spec`.
 */

exports = module.exports = Spec;

/**
 * Constructs a new `Spec` reporter instance.
 *
 * @public
 * @class
 * @memberof Mocha.reporters
 * @extends Mocha.reporters.Base
 * @param {Runner} runner - Instance triggers reporter actions.
 * @param {Object} [options] - runner options
 */
function Spec(runner, options) {
  Base.call(this, runner, options);

  var self = this;
  var indents = 0;
  var n = 0;

  function indent() {
    return Array(indents).join('  ');
  }

  runner.on(EVENT_RUN_BEGIN, function() {
    Base.consoleLog();
  });

  runner.on(EVENT_SUITE_BEGIN, function(suite) {
    ++indents;
    Base.consoleLog(color('suite', '%s%s'), indent(), suite.title);
  });

  runner.on(EVENT_SUITE_END, function() {
    --indents;
    if (indents === 1) {
      Base.consoleLog();
    }
  });

  runner.on(EVENT_TEST_PENDING, function(test) {
    var fmt = indent() + color('pending', '  - %s');
    Base.consoleLog(fmt, test.title);
  });

  runner.on(EVENT_TEST_PASS, function(test) {
    var fmt;
    if (test.speed === 'fast') {
      fmt =
        indent() +
        color('checkmark', '  ' + Base.symbols.ok) +
        color('pass', ' %s');
      Base.consoleLog(fmt, test.title);
    } else {
      fmt =
        indent() +
        color('checkmark', '  ' + Base.symbols.ok) +
        color('pass', ' %s') +
        color(test.speed, ' (%dms)');
      Base.consoleLog(fmt, test.title, test.duration);
    }
  });

  runner.on(EVENT_TEST_FAIL, function(test) {
    Base.consoleLog(indent() + color('fail', '  %d) %s'), ++n, test.title);
  });

  runner.once(EVENT_RUN_END, self.epilogue.bind(self));
}

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

Spec.description = 'hierarchical & verbose [default]';

},{"../runner":34,"../utils":38,"./base":17}],31:[function(require,module,exports){
(function (process){
'use strict';
/**
 * @module TAP
 */
/**
 * Module dependencies.
 */

var util = require('util');
var Base = require('./base');
var constants = require('../runner').constants;
var EVENT_TEST_PASS = constants.EVENT_TEST_PASS;
var EVENT_TEST_FAIL = constants.EVENT_TEST_FAIL;
var EVENT_RUN_BEGIN = constants.EVENT_RUN_BEGIN;
var EVENT_RUN_END = constants.EVENT_RUN_END;
var EVENT_TEST_PENDING = constants.EVENT_TEST_PENDING;
var EVENT_TEST_END = constants.EVENT_TEST_END;
var inherits = require('../utils').inherits;
var sprintf = util.format;

/**
 * Expose `TAP`.
 */

exports = module.exports = TAP;

/**
 * Constructs a new `TAP` reporter instance.
 *
 * @public
 * @class
 * @memberof Mocha.reporters
 * @extends Mocha.reporters.Base
 * @param {Runner} runner - Instance triggers reporter actions.
 * @param {Object} [options] - runner options
 */
function TAP(runner, options) {
  Base.call(this, runner, options);

  var self = this;
  var n = 1;

  var tapVersion = '12';
  if (options && options.reporterOptions) {
    if (options.reporterOptions.tapVersion) {
      tapVersion = options.reporterOptions.tapVersion.toString();
    }
  }

  this._producer = createProducer(tapVersion);

  runner.once(EVENT_RUN_BEGIN, function() {
    var ntests = runner.grepTotal(runner.suite);
    self._producer.writeVersion();
    self._producer.writePlan(ntests);
  });

  runner.on(EVENT_TEST_END, function() {
    ++n;
  });

  runner.on(EVENT_TEST_PENDING, function(test) {
    self._producer.writePending(n, test);
  });

  runner.on(EVENT_TEST_PASS, function(test) {
    self._producer.writePass(n, test);
  });

  runner.on(EVENT_TEST_FAIL, function(test, err) {
    self._producer.writeFail(n, test, err);
  });

  runner.once(EVENT_RUN_END, function() {
    self._producer.writeEpilogue(runner.stats);
  });
}

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

/**
 * Returns a TAP-safe title of `test`.
 *
 * @private
 * @param {Test} test - Test instance.
 * @return {String} title with any hash character removed
 */
function title(test) {
  return test.fullTitle().replace(/#/g, '');
}

/**
 * Writes newline-terminated formatted string to reporter output stream.
 *
 * @private
 * @param {string} format - `printf`-like format string
 * @param {...*} [varArgs] - Format string arguments
 */
function println(format, varArgs) {
  var vargs = Array.from(arguments);
  vargs[0] += '\n';
  process.stdout.write(sprintf.apply(null, vargs));
}

/**
 * Returns a `tapVersion`-appropriate TAP producer instance, if possible.
 *
 * @private
 * @param {string} tapVersion - Version of TAP specification to produce.
 * @returns {TAPProducer} specification-appropriate instance
 * @throws {Error} if specification version has no associated producer.
 */
function createProducer(tapVersion) {
  var producers = {
    '12': new TAP12Producer(),
    '13': new TAP13Producer()
  };
  var producer = producers[tapVersion];

  if (!producer) {
    throw new Error(
      'invalid or unsupported TAP version: ' + JSON.stringify(tapVersion)
    );
  }

  return producer;
}

/**
 * @summary
 * Constructs a new TAPProducer.
 *
 * @description
 * <em>Only</em> to be used as an abstract base class.
 *
 * @private
 * @constructor
 */
function TAPProducer() {}

/**
 * Writes the TAP version to reporter output stream.
 *
 * @abstract
 */
TAPProducer.prototype.writeVersion = function() {};

/**
 * Writes the plan to reporter output stream.
 *
 * @abstract
 * @param {number} ntests - Number of tests that are planned to run.
 */
TAPProducer.prototype.writePlan = function(ntests) {
  println('%d..%d', 1, ntests);
};

/**
 * Writes that test passed to reporter output stream.
 *
 * @abstract
 * @param {number} n - Index of test that passed.
 * @param {Test} test - Instance containing test information.
 */
TAPProducer.prototype.writePass = function(n, test) {
  println('ok %d %s', n, title(test));
};

/**
 * Writes that test was skipped to reporter output stream.
 *
 * @abstract
 * @param {number} n - Index of test that was skipped.
 * @param {Test} test - Instance containing test information.
 */
TAPProducer.prototype.writePending = function(n, test) {
  println('ok %d %s # SKIP -', n, title(test));
};

/**
 * Writes that test failed to reporter output stream.
 *
 * @abstract
 * @param {number} n - Index of test that failed.
 * @param {Test} test - Instance containing test information.
 * @param {Error} err - Reason the test failed.
 */
TAPProducer.prototype.writeFail = function(n, test, err) {
  println('not ok %d %s', n, title(test));
};

/**
 * Writes the summary epilogue to reporter output stream.
 *
 * @abstract
 * @param {Object} stats - Object containing run statistics.
 */
TAPProducer.prototype.writeEpilogue = function(stats) {
  // :TBD: Why is this not counting pending tests?
  println('# tests ' + (stats.passes + stats.failures));
  println('# pass ' + stats.passes);
  // :TBD: Why are we not showing pending results?
  println('# fail ' + stats.failures);
};

/**
 * @summary
 * Constructs a new TAP12Producer.
 *
 * @description
 * Produces output conforming to the TAP12 specification.
 *
 * @private
 * @constructor
 * @extends TAPProducer
 * @see {@link https://testanything.org/tap-specification.html|Specification}
 */
function TAP12Producer() {
  /**
   * Writes that test failed to reporter output stream, with error formatting.
   * @override
   */
  this.writeFail = function(n, test, err) {
    TAPProducer.prototype.writeFail.call(this, n, test, err);
    if (err.message) {
      println(err.message.replace(/^/gm, '  '));
    }
    if (err.stack) {
      println(err.stack.replace(/^/gm, '  '));
    }
  };
}

/**
 * Inherit from `TAPProducer.prototype`.
 */
inherits(TAP12Producer, TAPProducer);

/**
 * @summary
 * Constructs a new TAP13Producer.
 *
 * @description
 * Produces output conforming to the TAP13 specification.
 *
 * @private
 * @constructor
 * @extends TAPProducer
 * @see {@link https://testanything.org/tap-version-13-specification.html|Specification}
 */
function TAP13Producer() {
  /**
   * Writes the TAP version to reporter output stream.
   * @override
   */
  this.writeVersion = function() {
    println('TAP version 13');
  };

  /**
   * Writes that test failed to reporter output stream, with error formatting.
   * @override
   */
  this.writeFail = function(n, test, err) {
    TAPProducer.prototype.writeFail.call(this, n, test, err);
    var emitYamlBlock = err.message != null || err.stack != null;
    if (emitYamlBlock) {
      println(indent(1) + '---');
      if (err.message) {
        println(indent(2) + 'message: |-');
        println(err.message.replace(/^/gm, indent(3)));
      }
      if (err.stack) {
        println(indent(2) + 'stack: |-');
        println(err.stack.replace(/^/gm, indent(3)));
      }
      println(indent(1) + '...');
    }
  };

  function indent(level) {
    return Array(level + 1).join('  ');
  }
}

/**
 * Inherit from `TAPProducer.prototype`.
 */
inherits(TAP13Producer, TAPProducer);

TAP.description = 'TAP-compatible output';

}).call(this,require('_process'))
},{"../runner":34,"../utils":38,"./base":17,"_process":69,"util":89}],32:[function(require,module,exports){
(function (process,global){
'use strict';
/**
 * @module XUnit
 */
/**
 * Module dependencies.
 */

var Base = require('./base');
var utils = require('../utils');
var fs = require('fs');
var mkdirp = require('mkdirp');
var path = require('path');
var errors = require('../errors');
var createUnsupportedError = errors.createUnsupportedError;
var constants = require('../runner').constants;
var EVENT_TEST_PASS = constants.EVENT_TEST_PASS;
var EVENT_TEST_FAIL = constants.EVENT_TEST_FAIL;
var EVENT_RUN_END = constants.EVENT_RUN_END;
var EVENT_TEST_PENDING = constants.EVENT_TEST_PENDING;
var STATE_FAILED = require('../runnable').constants.STATE_FAILED;
var inherits = utils.inherits;
var escape = utils.escape;

/**
 * Save timer references to avoid Sinon interfering (see GH-237).
 */
var Date = global.Date;

/**
 * Expose `XUnit`.
 */

exports = module.exports = XUnit;

/**
 * Constructs a new `XUnit` reporter instance.
 *
 * @public
 * @class
 * @memberof Mocha.reporters
 * @extends Mocha.reporters.Base
 * @param {Runner} runner - Instance triggers reporter actions.
 * @param {Object} [options] - runner options
 */
function XUnit(runner, options) {
  Base.call(this, runner, options);

  var stats = this.stats;
  var tests = [];
  var self = this;

  // the name of the test suite, as it will appear in the resulting XML file
  var suiteName;

  // the default name of the test suite if none is provided
  var DEFAULT_SUITE_NAME = 'Mocha Tests';

  if (options && options.reporterOptions) {
    if (options.reporterOptions.output) {
      if (!fs.createWriteStream) {
        throw createUnsupportedError('file output not supported in browser');
      }

      mkdirp.sync(path.dirname(options.reporterOptions.output));
      self.fileStream = fs.createWriteStream(options.reporterOptions.output);
    }

    // get the suite name from the reporter options (if provided)
    suiteName = options.reporterOptions.suiteName;
  }

  // fall back to the default suite name
  suiteName = suiteName || DEFAULT_SUITE_NAME;

  runner.on(EVENT_TEST_PENDING, function(test) {
    tests.push(test);
  });

  runner.on(EVENT_TEST_PASS, function(test) {
    tests.push(test);
  });

  runner.on(EVENT_TEST_FAIL, function(test) {
    tests.push(test);
  });

  runner.once(EVENT_RUN_END, function() {
    self.write(
      tag(
        'testsuite',
        {
          name: suiteName,
          tests: stats.tests,
          failures: 0,
          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 {
    Base.consoleLog(line);
  }
};

/**
 * Output tag for the given `test.`
 *
 * @param {Test} test
 */
XUnit.prototype.test = function(test) {
  Base.useColors = false;

  var attrs = {
    classname: test.parent.fullTitle(),
    name: test.title,
    time: test.duration / 1000 || 0
  };

  if (test.state === STATE_FAILED) {
    var err = test.err;
    var diff =
      !Base.hideDiff && Base.showDiff(err)
        ? '\n' + Base.generateDiff(err.actual, err.expected)
        : '';
    this.write(
      tag(
        'testcase',
        attrs,
        false,
        tag(
          'failure',
          {},
          false,
          escape(err.message) + escape(diff) + '\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;
}

XUnit.description = 'XUnit-compatible XML output';

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../errors":6,"../runnable":33,"../runner":34,"../utils":38,"./base":17,"_process":69,"fs":42,"mkdirp":59,"path":42}],33:[function(require,module,exports){
(function (global){
'use strict';

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

/**
 * Save timer references to avoid Sinon interfering (see GH-237).
 */
var Date = global.Date;
var setTimeout = global.setTimeout;
var clearTimeout = global.clearTimeout;
var toString = Object.prototype.toString;

module.exports = Runnable;

/**
 * Initialize a new `Runnable` with the given `title` and callback `fn`.
 *
 * @class
 * @extends external:EventEmitter
 * @public
 * @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._retries = -1;
  this._currentRetry = 0;
  this.pending = false;
}

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

/**
 * Get current timeout value in msecs.
 *
 * @private
 * @returns {number} current timeout threshold value
 */
/**
 * @summary
 * Set timeout threshold value (msecs).
 *
 * @description
 * A string argument can use shorthand (e.g., "2s") and will be converted.
 * The value will be clamped to range [<code>0</code>, <code>2^<sup>31</sup>-1</code>].
 * If clamped value matches either range endpoint, timeouts will be disabled.
 *
 * @private
 * @see {@link https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/setTimeout#Maximum_delay_value}
 * @param {number|string} ms - Timeout threshold value.
 * @returns {Runnable} this
 * @chainable
 */
Runnable.prototype.timeout = function(ms) {
  if (!arguments.length) {
    return this._timeout;
  }
  if (typeof ms === 'string') {
    ms = milliseconds(ms);
  }

  // Clamp to range
  var INT_MAX = Math.pow(2, 31) - 1;
  var range = [0, INT_MAX];
  ms = utils.clamp(ms, range);

  // see #1652 for reasoning
  if (ms === range[0] || ms === range[1]) {
    this._enableTimeouts = false;
  }
  debug('timeout %d', ms);
  this._timeout = ms;
  if (this.timer) {
    this.resetTimeout();
  }
  return this;
};

/**
 * Set or get slow `ms`.
 *
 * @private
 * @param {number|string} ms
 * @return {Runnable|number} ms or Runnable instance.
 */
Runnable.prototype.slow = function(ms) {
  if (!arguments.length || typeof ms === 'undefined') {
    return this._slow;
  }
  if (typeof ms === 'string') {
    ms = milliseconds(ms);
  }
  debug('slow %d', ms);
  this._slow = ms;
  return this;
};

/**
 * Set and get whether timeout is `enabled`.
 *
 * @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.
 *
 * @memberof Mocha.Runnable
 * @public
 */
Runnable.prototype.skip = function() {
  this.pending = true;
  throw new Pending('sync skip; aborting execution');
};

/**
 * Check if this runnable or its parent suite is marked as pending.
 *
 * @private
 */
Runnable.prototype.isPending = function() {
  return this.pending || (this.parent && this.parent.isPending());
};

/**
 * Return `true` if this Runnable has failed.
 * @return {boolean}
 * @private
 */
Runnable.prototype.isFailed = function() {
  return !this.isPending() && this.state === constants.STATE_FAILED;
};

/**
 * Return `true` if this Runnable has passed.
 * @return {boolean}
 * @private
 */
Runnable.prototype.isPassed = function() {
  return !this.isPending() && this.state === constants.STATE_PASSED;
};

/**
 * Set or get number of retries.
 *
 * @private
 */
Runnable.prototype.retries = function(n) {
  if (!arguments.length) {
    return this._retries;
  }
  this._retries = n;
};

/**
 * Set or get current retry
 *
 * @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.
 *
 * @memberof Mocha.Runnable
 * @public
 * @return {string}
 */
Runnable.prototype.fullTitle = function() {
  return this.titlePath().join(' ');
};

/**
 * Return the title path generated by concatenating the parent's title path with the title.
 *
 * @memberof Mocha.Runnable
 * @public
 * @return {string}
 */
Runnable.prototype.titlePath = function() {
  return this.parent.titlePath().concat([this.title]);
};

/**
 * Clear the timeout.
 *
 * @private
 */
Runnable.prototype.clearTimeout = function() {
  clearTimeout(this.timer);
};

/**
 * Reset the timeout.
 *
 * @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(self._timeoutError(ms));
    self.timedOut = true;
  }, ms);
};

/**
 * Set or get a list of whitelisted globals for this test run.
 *
 * @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
 * @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;
    var msg = 'done() called multiple times';
    if (err && err.message) {
      err.message += " (and Mocha's " + msg + ')';
      self.emit('error', err);
    } else {
      self.emit('error', new Error(msg));
    }
  }

  // finished
  function done(err) {
    var ms = self.timeout();
    if (self.timedOut) {
      return;
    }

    if (finished) {
      return multiple(err);
    }

    self.clearTimeout();
    self.duration = new Date() - start;
    finished = true;
    if (!err && self.duration > ms && self._enableTimeouts) {
      err = self._timeoutError(ms);
    }
    fn(err);
  }

  // for .resetTimeout() and Runner#uncaught()
  this.callback = done;

  if (this.fn && typeof this.fn.call !== 'function') {
    done(
      new TypeError(
        'A runnable must be passed a function as its second argument.'
      )
    );
    return;
  }

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

    // allows skip() to be used in an explicit async context
    this.skip = function asyncSkip() {
      this.pending = true;
      done();
      // halt execution, the uncaught handler will ignore the failure.
      throw new Pending('async skip; aborting execution');
    };

    try {
      callFnAsync(this.fn);
    } catch (err) {
      // handles async runnables which actually run synchronously
      emitted = true;
      if (err instanceof Pending) {
        return; // done() is already called in this.skip()
      } else if (this.allowUncaught) {
        throw err;
      }
      done(Runnable.toValueOrError(err));
    }
    return;
  }

  // sync or promise-returning
  try {
    if (this.isPending()) {
      done();
    } else {
      callFn(this.fn);
    }
  } catch (err) {
    emitted = true;
    if (err instanceof Pending) {
      return done();
    } else if (this.allowUncaught) {
      throw err;
    }
    done(Runnable.toValueOrError(err));
  }

  function callFn(fn) {
    var result = fn.call(ctx);
    if (result && typeof result.then === 'function') {
      self.resetTimeout();
      result.then(
        function() {
          done();
          // Return null so libraries like bluebird do not warn about
          // subsequently constructed Promises.
          return null;
        },
        function(reason) {
          done(reason || new Error('Promise rejected with no or falsy reason'));
        }
      );
    } else {
      if (self.asyncOnly) {
        return done(
          new Error(
            '--async-only option in use without declaring `done()` or returning a promise'
          )
        );
      }

      done();
    }
  }

  function callFnAsync(fn) {
    var result = fn.call(ctx, function(err) {
      if (err instanceof Error || toString.call(err) === '[object Error]') {
        return done(err);
      }
      if (err) {
        if (Object.prototype.toString.call(err) === '[object Object]') {
          return done(
            new Error('done() invoked with non-Error: ' + JSON.stringify(err))
          );
        }
        return done(new Error('done() invoked with non-Error: ' + err));
      }
      if (result && utils.isPromise(result)) {
        return done(
          new Error(
            'Resolution method is overspecified. Specify a callback *or* return a Promise; not both.'
          )
        );
      }

      done();
    });
  }
};

/**
 * Instantiates a "timeout" error
 *
 * @param {number} ms - Timeout (in milliseconds)
 * @returns {Error} a "timeout" error
 * @private
 */
Runnable.prototype._timeoutError = function(ms) {
  var msg =
    'Timeout of ' +
    ms +
    'ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves.';
  if (this.file) {
    msg += ' (' + this.file + ')';
  }
  return new Error(msg);
};

var constants = utils.defineConstants(
  /**
   * {@link Runnable}-related constants.
   * @public
   * @memberof Runnable
   * @readonly
   * @static
   * @alias constants
   * @enum {string}
   */
  {
    /**
     * Value of `state` prop when a `Runnable` has failed
     */
    STATE_FAILED: 'failed',
    /**
     * Value of `state` prop when a `Runnable` has passed
     */
    STATE_PASSED: 'passed'
  }
);

/**
 * Given `value`, return identity if truthy, otherwise create an "invalid exception" error and return that.
 * @param {*} [value] - Value to return, if present
 * @returns {*|Error} `value`, otherwise an `Error`
 * @private
 */
Runnable.toValueOrError = function(value) {
  return (
    value ||
    createInvalidExceptionError(
      'Runnable failed with falsy or undefined exception. Please throw an Error instead.',
      value
    )
  );
};

Runnable.constants = constants;

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./errors":6,"./pending":16,"./utils":38,"debug":45,"events":50,"ms":60}],34:[function(require,module,exports){
(function (process,global){
'use strict';

/**
 * Module dependencies.
 */
var util = require('util');
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 Suite = require('./suite');
var HOOK_TYPE_BEFORE_EACH = Suite.constants.HOOK_TYPE_BEFORE_EACH;
var HOOK_TYPE_AFTER_EACH = Suite.constants.HOOK_TYPE_AFTER_EACH;
var HOOK_TYPE_AFTER_ALL = Suite.constants.HOOK_TYPE_AFTER_ALL;
var HOOK_TYPE_BEFORE_ALL = Suite.constants.HOOK_TYPE_BEFORE_ALL;
var EVENT_ROOT_SUITE_RUN = Suite.constants.EVENT_ROOT_SUITE_RUN;
var STATE_FAILED = Runnable.constants.STATE_FAILED;
var STATE_PASSED = Runnable.constants.STATE_PASSED;
var dQuote = utils.dQuote;
var sQuote = utils.sQuote;
var stackFilter = utils.stackTraceFilter();
var stringify = utils.stringify;
var type = utils.type;
var errors = require('./errors');
var createInvalidExceptionError = errors.createInvalidExceptionError;
var createUnsupportedError = errors.createUnsupportedError;

/**
 * Non-enumerable globals.
 * @readonly
 */
var globals = [
  'setTimeout',
  'clearTimeout',
  'setInterval',
  'clearInterval',
  'XMLHttpRequest',
  'Date',
  'setImmediate',
  'clearImmediate'
];

var constants = utils.defineConstants(
  /**
   * {@link Runner}-related constants.
   * @public
   * @memberof Runner
   * @readonly
   * @alias constants
   * @static
   * @enum {string}
   */
  {
    /**
     * Emitted when {@link Hook} execution begins
     */
    EVENT_HOOK_BEGIN: 'hook',
    /**
     * Emitted when {@link Hook} execution ends
     */
    EVENT_HOOK_END: 'hook end',
    /**
     * Emitted when Root {@link Suite} execution begins (all files have been parsed and hooks/tests are ready for execution)
     */
    EVENT_RUN_BEGIN: 'start',
    /**
     * Emitted when Root {@link Suite} execution has been delayed via `delay` option
     */
    EVENT_DELAY_BEGIN: 'waiting',
    /**
     * Emitted when delayed Root {@link Suite} execution is triggered by user via `global.run()`
     */
    EVENT_DELAY_END: 'ready',
    /**
     * Emitted when Root {@link Suite} execution ends
     */
    EVENT_RUN_END: 'end',
    /**
     * Emitted when {@link Suite} execution begins
     */
    EVENT_SUITE_BEGIN: 'suite',
    /**
     * Emitted when {@link Suite} execution ends
     */
    EVENT_SUITE_END: 'suite end',
    /**
     * Emitted when {@link Test} execution begins
     */
    EVENT_TEST_BEGIN: 'test',
    /**
     * Emitted when {@link Test} execution ends
     */
    EVENT_TEST_END: 'test end',
    /**
     * Emitted when {@link Test} execution fails
     */
    EVENT_TEST_FAIL: 'fail',
    /**
     * Emitted when {@link Test} execution succeeds
     */
    EVENT_TEST_PASS: 'pass',
    /**
     * Emitted when {@link Test} becomes pending
     */
    EVENT_TEST_PENDING: 'pending',
    /**
     * Emitted when {@link Test} execution has failed, but will retry
     */
    EVENT_TEST_RETRY: 'retry'
  }
);

module.exports = Runner;

/**
 * Initialize a `Runner` at the Root {@link Suite}, which represents a hierarchy of {@link Suite|Suites} and {@link Test|Tests}.
 *
 * @extends external:EventEmitter
 * @public
 * @class
 * @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(constants.EVENT_TEST_END, function(test) {
    if (test.type === 'test' && test.retriedTest() && test.parent) {
      var idx =
        test.parent.tests && test.parent.tests.indexOf(test.retriedTest());
      if (idx > -1) test.parent.tests[idx] = test;
    }
    self.checkGlobals(test);
  });
  this.on(constants.EVENT_HOOK_END, function(hook) {
    self.checkGlobals(hook);
  });
  this._defaultGrep = /.*/;
  this.grep(this._defaultGrep);
  this.globals(this.globalProps());
}

/**
 * Wrapper for setImmediate, process.nextTick, or browser polyfill.
 *
 * @param {Function} fn
 * @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.
 *
 * @public
 * @memberof Runner
 * @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.
 *
 * @memberof Runner
 * @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}
 * @private
 */
Runner.prototype.globalProps = function() {
  var props = Object.keys(global);

  // non-enumerables
  for (var i = 0; i < globals.length; ++i) {
    if (~props.indexOf(globals[i])) {
      continue;
    }
    props.push(globals[i]);
  }

  return props;
};

/**
 * Allow the given `arr` of globals.
 *
 * @public
 * @memberof Runner
 * @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.
 *
 * @private
 */
Runner.prototype.checkGlobals = function(test) {
  if (!this.checkLeaks) {
    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) {
    var msg = 'global leak(s) detected: %s';
    var error = new Error(util.format(msg, leaks.map(sQuote).join(', ')));
    this.fail(test, error);
  }
};

/**
 * Fail the given `test`.
 *
 * @private
 * @param {Test} test
 * @param {Error} err
 */
Runner.prototype.fail = function(test, err) {
  if (test.isPending()) {
    return;
  }

  ++this.failures;
  test.state = STATE_FAILED;

  if (!isError(err)) {
    err = thrown2Error(err);
  }

  try {
    err.stack =
      this.fullStackTrace || !err.stack ? err.stack : stackFilter(err.stack);
  } catch (ignore) {
    // some environments do not take kindly to monkeying with the stack
  }

  this.emit(constants.EVENT_TEST_FAIL, test, err);
};

/**
 * Fail the given `hook` with `err`.
 *
 * Hook failures work in the following pattern:
 * - If bail, run corresponding `after each` and `after` hooks,
 *   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
 *
 * @private
 * @param {Hook} hook
 * @param {Error} err
 */
Runner.prototype.failHook = function(hook, err) {
  hook.originalTitle = hook.originalTitle || hook.title;
  if (hook.ctx && hook.ctx.currentTest) {
    hook.title =
      hook.originalTitle + ' for ' + dQuote(hook.ctx.currentTest.title);
  } else {
    var parentTitle;
    if (hook.parent.title) {
      parentTitle = hook.parent.title;
    } else {
      parentTitle = hook.parent.root ? '{root}' : '';
    }
    hook.title = hook.originalTitle + ' in ' + dQuote(parentTitle);
  }

  this.fail(hook, err);
};

/**
 * Run hook `name` callbacks and then invoke `fn()`.
 *
 * @private
 * @param {string} name
 * @param {Function} fn
 */

Runner.prototype.hook = function(name, fn) {
  var suite = this.suite;
  var hooks = suite.getHooks(name);
  var self = this;

  function next(i) {
    var hook = hooks[i];
    if (!hook) {
      return fn();
    }
    self.currentRunnable = hook;

    if (name === HOOK_TYPE_BEFORE_ALL) {
      hook.ctx.currentTest = hook.parent.tests[0];
    } else if (name === HOOK_TYPE_AFTER_ALL) {
      hook.ctx.currentTest = hook.parent.tests[hook.parent.tests.length - 1];
    } else {
      hook.ctx.currentTest = self.test;
    }

    hook.allowUncaught = self.allowUncaught;

    self.emit(constants.EVENT_HOOK_BEGIN, 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);
      }
      // conditional skip
      if (hook.pending) {
        if (name === HOOK_TYPE_AFTER_EACH) {
          // TODO define and implement use case
          if (self.test) {
            self.test.pending = true;
          }
        } else if (name === HOOK_TYPE_BEFORE_EACH) {
          if (self.test) {
            self.test.pending = true;
          }
          self.emit(constants.EVENT_HOOK_END, hook);
          hook.pending = false; // activates hook for next test
          return fn(new Error('abort hookDown'));
        } else if (name === HOOK_TYPE_BEFORE_ALL) {
          suite.tests.forEach(function(test) {
            test.pending = true;
          });
          suite.suites.forEach(function(suite) {
            suite.pending = true;
          });
        } else {
          hook.pending = false;
          var errForbid = createUnsupportedError('`this.skip` forbidden');
          self.failHook(hook, errForbid);
          return fn(errForbid);
        }
      } else if (err) {
        self.failHook(hook, err);
        // stop executing hooks, notify callee of hook err
        return fn(err);
      }
      self.emit(constants.EVENT_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)`.
 *
 * @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
 * @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
 * @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}
 * @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
 * @private
 */
Runner.prototype.runTest = function(fn) {
  var self = this;
  var test = this.test;

  if (!test) {
    return;
  }

  var suite = this.parents().reverse()[0] || this.suite;
  if (this.forbidOnly && suite.hasOnly()) {
    fn(new Error('`.only` forbidden'));
    return;
  }
  if (this.asyncOnly) {
    test.asyncOnly = true;
  }
  test.on('error', function(err) {
    if (err instanceof Pending) {
      return;
    }
    self.fail(test, err);
  });
  if (this.allowUncaught) {
    test.allowUncaught = true;
    return test.run(fn);
  }
  try {
    test.run(fn);
  } catch (err) {
    fn(err);
  }
};

/**
 * Run tests in the given `suite` and invoke the callback `fn()` when complete.
 *
 * @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(HOOK_TYPE_AFTER_EACH, 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) {
      tests = [];
    }

    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;
    }

    // static skip, no hooks are executed
    if (test.isPending()) {
      if (self.forbidPending) {
        test.isPending = alwaysFalse;
        self.fail(test, new Error('Pending test forbidden'));
        delete test.isPending;
      } else {
        self.emit(constants.EVENT_TEST_PENDING, test);
      }
      self.emit(constants.EVENT_TEST_END, test);
      return next();
    }

    // execute test and hook(s)
    self.emit(constants.EVENT_TEST_BEGIN, (self.test = test));
    self.hookDown(HOOK_TYPE_BEFORE_EACH, function(err, errSuite) {
      // conditional skip within beforeEach
      if (test.isPending()) {
        if (self.forbidPending) {
          test.isPending = alwaysFalse;
          self.fail(test, new Error('Pending test forbidden'));
          delete test.isPending;
        } else {
          self.emit(constants.EVENT_TEST_PENDING, test);
        }
        self.emit(constants.EVENT_TEST_END, test);
        // skip inner afterEach hooks below errSuite level
        var origSuite = self.suite;
        self.suite = errSuite || self.suite;
        return self.hookUp(HOOK_TYPE_AFTER_EACH, function(e, eSuite) {
          self.suite = origSuite;
          next(e, eSuite);
        });
      }
      if (err) {
        return hookErr(err, errSuite, false);
      }
      self.currentRunnable = self.test;
      self.runTest(function(err) {
        test = self.test;
        // conditional skip within it
        if (test.pending) {
          if (self.forbidPending) {
            test.isPending = alwaysFalse;
            self.fail(test, new Error('Pending test forbidden'));
            delete test.isPending;
          } else {
            self.emit(constants.EVENT_TEST_PENDING, test);
          }
          self.emit(constants.EVENT_TEST_END, test);
          return self.hookUp(HOOK_TYPE_AFTER_EACH, next);
        } else if (err) {
          var retry = test.currentRetry();
          if (retry < test.retries()) {
            var clonedTest = test.clone();
            clonedTest.currentRetry(retry + 1);
            tests.unshift(clonedTest);

            self.emit(constants.EVENT_TEST_RETRY, test, err);

            // Early return + hook trigger so that it doesn't
            // increment the count wrong
            return self.hookUp(HOOK_TYPE_AFTER_EACH, next);
          } else {
            self.fail(test, err);
          }
          self.emit(constants.EVENT_TEST_END, test);
          return self.hookUp(HOOK_TYPE_AFTER_EACH, next);
        }

        test.state = STATE_PASSED;
        self.emit(constants.EVENT_TEST_PASS, test);
        self.emit(constants.EVENT_TEST_END, test);
        self.hookUp(HOOK_TYPE_AFTER_EACH, next);
      });
    });
  }

  this.next = next;
  this.hookErr = hookErr;
  next();
};

function alwaysFalse() {
  return false;
}

/**
 * Run the given `suite` and invoke the callback `fn()` when complete.
 *
 * @private
 * @param {Suite} suite
 * @param {Function} fn
 */
Runner.prototype.runSuite = function(suite, fn) {
  var i = 0;
  var self = this;
  var total = this.grepTotal(suite);

  debug('run suite %s', suite.fullTitle());

  if (!total || (self.failures && suite._bail)) {
    return fn();
  }

  this.emit(constants.EVENT_SUITE_BEGIN, (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;

    // remove reference to test
    delete self.test;

    self.hook(HOOK_TYPE_AFTER_ALL, function() {
      self.emit(constants.EVENT_SUITE_END, suite);
      fn(errSuite);
    });
  }

  this.nextSuite = next;

  this.hook(HOOK_TYPE_BEFORE_ALL, function(err) {
    if (err) {
      return done();
    }
    self.runTests(suite, next);
  });
};

/**
 * Handle uncaught exceptions within runner.
 *
 * @param {Error} err
 * @private
 */
Runner.prototype.uncaught = function(err) {
  if (err instanceof Pending) {
    return;
  }
  // browser does not exit script when throwing in global.onerror()
  if (this.allowUncaught && !process.browser) {
    throw err;
  }

  if (err) {
    debug('uncaught exception %O', err);
  } else {
    debug('uncaught undefined/falsy exception');
    err = createInvalidExceptionError(
      'Caught falsy/undefined exception which would otherwise be uncaught. No stack trace found; try a debugger',
      err
    );
  }

  if (!isError(err)) {
    err = thrown2Error(err);
  }
  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(constants.EVENT_RUN_BEGIN);
      this.fail(runnable, err);
      this.emit(constants.EVENT_RUN_END);
    }

    return;
  }

  runnable.clearTimeout();

  if (runnable.isFailed()) {
    // Ignore error if already failed
    return;
  } else if (runnable.isPending()) {
    // report 'pending test' retrospectively as failed
    runnable.isPending = alwaysFalse;
    this.fail(runnable, err);
    delete runnable.isPending;
    return;
  }

  // we cannot recover gracefully if a Runnable has already passed
  // then fails asynchronously
  if (runnable.isPassed()) {
    this.fail(runnable, err);
    this.abort();
  } else {
    debug(runnable);
    return runnable.callback(err);
  }
};

/**
 * Handle uncaught exceptions after runner's end event.
 *
 * @param {Error} err
 * @private
 */
Runner.prototype.uncaughtEnd = function uncaughtEnd(err) {
  if (err instanceof Pending) return;
  throw err;
};

/**
 * Run the root suite and invoke `fn(failures)`
 * on completion.
 *
 * @public
 * @memberof Runner
 * @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() {
    // If there is an `only` filter
    if (rootSuite.hasOnly()) {
      rootSuite.filterOnly();
    }
    self.started = true;
    if (self._delay) {
      self.emit(constants.EVENT_DELAY_END);
    }
    self.emit(constants.EVENT_RUN_BEGIN);

    self.runSuite(rootSuite, function() {
      debug('finished running');
      self.emit(constants.EVENT_RUN_END);
    });
  }

  debug(constants.EVENT_RUN_BEGIN);

  // references cleanup to avoid memory leaks
  this.on(constants.EVENT_SUITE_END, function(suite) {
    suite.cleanReferences();
  });

  // callback
  this.on(constants.EVENT_RUN_END, function() {
    debug(constants.EVENT_RUN_END);
    process.removeListener('uncaughtException', uncaught);
    process.on('uncaughtException', self.uncaughtEnd);
    fn(self.failures);
  });

  // uncaught exception
  process.removeListener('uncaughtException', self.uncaughtEnd);
  process.on('uncaughtException', uncaught);

  if (this._delay) {
    // for reporters, I guess.
    // might be nice to debounce some dots while we wait.
    this.emit(constants.EVENT_DELAY_BEGIN, rootSuite);
    rootSuite.once(EVENT_ROOT_SUITE_RUN, start);
  } else {
    Runner.immediately(function() {
      start();
    });
  }

  return this;
};

/**
 * Cleanly abort execution.
 *
 * @memberof Runner
 * @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`.
 *
 * @private
 * @param {Array} ok
 * @param {Array} globals
 * @return {Array}
 */
function filterLeaks(ok, globals) {
  return globals.filter(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 = ok.filter(function(ok) {
      if (~ok.indexOf('*')) {
        return key.indexOf(ok.split('*')[0]) === 0;
      }
      return key === ok;
    });
    return !matched.length && (!global.navigator || key !== 'onerror');
  });
}

/**
 * Check if argument is an instance of Error object or a duck-typed equivalent.
 *
 * @private
 * @param {Object} err - object to check
 * @param {string} err.message - error message
 * @returns {boolean}
 */
function isError(err) {
  return err instanceof Error || (err && typeof err.message === 'string');
}

/**
 *
 * Converts thrown non-extensible type into proper Error.
 *
 * @private
 * @param {*} thrown - Non-extensible type thrown by code
 * @return {Error}
 */
function thrown2Error(err) {
  return new Error(
    'the ' + type(err) + ' ' + stringify(err) + ' was thrown, throw an Error :)'
  );
}

Runner.constants = constants;

/**
 * Node.js' `EventEmitter`
 * @external EventEmitter
 * @see {@link https://nodejs.org/api/events.html#events_class_eventemitter}
 */

}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./errors":6,"./pending":16,"./runnable":33,"./suite":36,"./utils":38,"_process":69,"debug":45,"events":50,"util":89}],35:[function(require,module,exports){
(function (global){
'use strict';

/**
 * Provides a factory function for a {@link StatsCollector} object.
 * @module
 */

var constants = require('./runner').constants;
var EVENT_TEST_PASS = constants.EVENT_TEST_PASS;
var EVENT_TEST_FAIL = constants.EVENT_TEST_FAIL;
var EVENT_SUITE_BEGIN = constants.EVENT_SUITE_BEGIN;
var EVENT_RUN_BEGIN = constants.EVENT_RUN_BEGIN;
var EVENT_TEST_PENDING = constants.EVENT_TEST_PENDING;
var EVENT_RUN_END = constants.EVENT_RUN_END;
var EVENT_TEST_END = constants.EVENT_TEST_END;

/**
 * Test statistics collector.
 *
 * @public
 * @typedef {Object} StatsCollector
 * @property {number} suites - integer count of suites run.
 * @property {number} tests - integer count of tests run.
 * @property {number} passes - integer count of passing tests.
 * @property {number} pending - integer count of pending tests.
 * @property {number} failures - integer count of failed tests.
 * @property {Date} start - time when testing began.
 * @property {Date} end - time when testing concluded.
 * @property {number} duration - number of msecs that testing took.
 */

var Date = global.Date;

/**
 * Provides stats such as test duration, number of tests passed / failed etc., by listening for events emitted by `runner`.
 *
 * @private
 * @param {Runner} runner - Runner instance
 * @throws {TypeError} If falsy `runner`
 */
function createStatsCollector(runner) {
  /**
   * @type StatsCollector
   */
  var stats = {
    suites: 0,
    tests: 0,
    passes: 0,
    pending: 0,
    failures: 0
  };

  if (!runner) {
    throw new TypeError('Missing runner argument');
  }

  runner.stats = stats;

  runner.once(EVENT_RUN_BEGIN, function() {
    stats.start = new Date();
  });
  runner.on(EVENT_SUITE_BEGIN, function(suite) {
    suite.root || stats.suites++;
  });
  runner.on(EVENT_TEST_PASS, function() {
    stats.passes++;
  });
  runner.on(EVENT_TEST_FAIL, function() {
    stats.failures++;
  });
  runner.on(EVENT_TEST_PENDING, function() {
    stats.pending++;
  });
  runner.on(EVENT_TEST_END, function() {
    stats.tests++;
  });
  runner.once(EVENT_RUN_END, function() {
    stats.end = new Date();
    stats.duration = stats.end - stats.start;
  });
}

module.exports = createStatsCollector;

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./runner":34}],36:[function(require,module,exports){
'use strict';

/**
 * Module dependencies.
 */
var EventEmitter = require('events').EventEmitter;
var Hook = require('./hook');
var utils = require('./utils');
var inherits = utils.inherits;
var debug = require('debug')('mocha:suite');
var milliseconds = require('ms');
var errors = require('./errors');
var createInvalidArgumentTypeError = errors.createInvalidArgumentTypeError;

/**
 * Expose `Suite`.
 */

exports = module.exports = Suite;

/**
 * Create a new `Suite` with the given `title` and parent `Suite`.
 *
 * @public
 * @param {Suite} parent - Parent suite (required!)
 * @param {string} title - Title
 * @return {Suite}
 */
Suite.create = function(parent, title) {
  var suite = new Suite(title, parent.ctx);
  suite.parent = parent;
  title = suite.fullTitle();
  parent.addSuite(suite);
  return suite;
};

/**
 * Constructs a new `Suite` instance with the given `title`, `ctx`, and `isRoot`.
 *
 * @public
 * @class
 * @extends EventEmitter
 * @see {@link https://nodejs.org/api/events.html#events_class_eventemitter|EventEmitter}
 * @param {string} title - Suite title.
 * @param {Context} parentContext - Parent context instance.
 * @param {boolean} [isRoot=false] - Whether this is the root suite.
 */
function Suite(title, parentContext, isRoot) {
  if (!utils.isString(title)) {
    throw createInvalidArgumentTypeError(
      'Suite argument "title" must be a string. Received type "' +
        typeof title +
        '"',
      'title',
      'string'
    );
  }
  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 = isRoot === true;
  this._timeout = 2000;
  this._enableTimeouts = true;
  this._slow = 75;
  this._bail = false;
  this._retries = -1;
  this._onlyTests = [];
  this._onlySuites = [];
  this.delayed = false;

  this.on('newListener', function(event) {
    if (deprecatedEvents[event]) {
      utils.deprecate(
        'Event "' +
          event +
          '" is deprecated.  Please let the Mocha team know about your use case: https://git.io/v6Lwm'
      );
    }
  });
}

/**
 * Inherit from `EventEmitter.prototype`.
 */
inherits(Suite, EventEmitter);

/**
 * Return a clone of this `Suite`.
 *
 * @private
 * @return {Suite}
 */
Suite.prototype.clone = function() {
  var suite = new Suite(this.title);
  debug('clone');
  suite.ctx = this.ctx;
  suite.root = this.root;
  suite.timeout(this.timeout());
  suite.retries(this.retries());
  suite.enableTimeouts(this.enableTimeouts());
  suite.slow(this.slow());
  suite.bail(this.bail());
  return suite;
};

/**
 * Set or get timeout `ms` or short-hand such as "2s".
 *
 * @private
 * @todo Do not attempt to set value if `ms` is undefined
 * @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 or get number of times to retry a failed test.
 *
 * @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 or get timeout to `enabled`.
 *
 * @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 or get slow `ms` or short-hand such as "2s".
 *
 * @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;
};

/**
 * Set or get whether to bail after first error.
 *
 * @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.
 *
 * @private
 */
Suite.prototype.isPending = function() {
  return this.pending || (this.parent && this.parent.isPending());
};

/**
 * Generic hook-creator.
 * @private
 * @param {string} title - Title of hook
 * @param {Function} fn - Hook callback
 * @returns {Hook} A new hook
 */
Suite.prototype._createHook = function(title, fn) {
  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;
  hook.file = this.file;
  return hook;
};

/**
 * Run `fn(test[, done])` before running tests.
 *
 * @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 = this._createHook(title, fn);
  this._beforeAll.push(hook);
  this.emit(constants.EVENT_SUITE_ADD_HOOK_BEFORE_ALL, hook);
  return this;
};

/**
 * Run `fn(test[, done])` after running tests.
 *
 * @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 = this._createHook(title, fn);
  this._afterAll.push(hook);
  this.emit(constants.EVENT_SUITE_ADD_HOOK_AFTER_ALL, hook);
  return this;
};

/**
 * Run `fn(test[, done])` before each test case.
 *
 * @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 = this._createHook(title, fn);
  this._beforeEach.push(hook);
  this.emit(constants.EVENT_SUITE_ADD_HOOK_BEFORE_EACH, hook);
  return this;
};

/**
 * Run `fn(test[, done])` after each test case.
 *
 * @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 = this._createHook(title, fn);
  this._afterEach.push(hook);
  this.emit(constants.EVENT_SUITE_ADD_HOOK_AFTER_EACH, hook);
  return this;
};

/**
 * Add a test `suite`.
 *
 * @private
 * @param {Suite} suite
 * @return {Suite} for chaining
 */
Suite.prototype.addSuite = function(suite) {
  suite.parent = this;
  suite.root = false;
  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(constants.EVENT_SUITE_ADD_SUITE, suite);
  return this;
};

/**
 * Add a `test` to this suite.
 *
 * @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(constants.EVENT_SUITE_ADD_TEST, test);
  return this;
};

/**
 * Return the full title generated by recursively concatenating the parent's
 * full title.
 *
 * @memberof Suite
 * @public
 * @return {string}
 */
Suite.prototype.fullTitle = function() {
  return this.titlePath().join(' ');
};

/**
 * Return the title path generated by recursively concatenating the parent's
 * title path.
 *
 * @memberof Suite
 * @public
 * @return {string}
 */
Suite.prototype.titlePath = function() {
  var result = [];
  if (this.parent) {
    result = result.concat(this.parent.titlePath());
  }
  if (!this.root) {
    result.push(this.title);
  }
  return result;
};

/**
 * Return the total number of tests.
 *
 * @memberof Suite
 * @public
 * @return {number}
 */
Suite.prototype.total = function() {
  return (
    this.suites.reduce(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)`.
 *
 * @private
 * @param {Function} fn
 * @return {Suite}
 */
Suite.prototype.eachTest = function(fn) {
  this.tests.forEach(fn);
  this.suites.forEach(function(suite) {
    suite.eachTest(fn);
  });
  return this;
};

/**
 * This will run the root suite if we happen to be running in delayed mode.
 * @private
 */
Suite.prototype.run = function run() {
  if (this.root) {
    this.emit(constants.EVENT_ROOT_SUITE_RUN);
  }
};

/**
 * Determines whether a suite has an `only` test or suite as a descendant.
 *
 * @private
 * @returns {Boolean}
 */
Suite.prototype.hasOnly = function hasOnly() {
  return (
    this._onlyTests.length > 0 ||
    this._onlySuites.length > 0 ||
    this.suites.some(function(suite) {
      return suite.hasOnly();
    })
  );
};

/**
 * Filter suites based on `isOnly` logic.
 *
 * @private
 * @returns {Boolean}
 */
Suite.prototype.filterOnly = function filterOnly() {
  if (this._onlyTests.length) {
    // If the suite contains `only` tests, run those and ignore any nested suites.
    this.tests = this._onlyTests;
    this.suites = [];
  } else {
    // Otherwise, do not run any of the tests in this suite.
    this.tests = [];
    this._onlySuites.forEach(function(onlySuite) {
      // If there are other `only` tests/suites nested in the current `only` suite, then filter that `only` suite.
      // Otherwise, all of the tests on this `only` suite should be run, so don't filter it.
      if (onlySuite.hasOnly()) {
        onlySuite.filterOnly();
      }
    });
    // Run the `only` suites, as well as any other suites that have `only` tests/suites as descendants.
    var onlySuites = this._onlySuites;
    this.suites = this.suites.filter(function(childSuite) {
      return onlySuites.indexOf(childSuite) !== -1 || childSuite.filterOnly();
    });
  }
  // Keep the suite only if there is something to run
  return this.tests.length > 0 || this.suites.length > 0;
};

/**
 * Adds a suite to the list of subsuites marked `only`.
 *
 * @private
 * @param {Suite} suite
 */
Suite.prototype.appendOnlySuite = function(suite) {
  this._onlySuites.push(suite);
};

/**
 * Adds a test to the list of tests marked `only`.
 *
 * @private
 * @param {Test} test
 */
Suite.prototype.appendOnlyTest = function(test) {
  this._onlyTests.push(test);
};

/**
 * Returns the array of hooks by hook name; see `HOOK_TYPE_*` constants.
 * @private
 */
Suite.prototype.getHooks = function getHooks(name) {
  return this['_' + name];
};

/**
 * 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.
 *
 * @private
 */
Suite.prototype.cleanReferences = function cleanReferences() {
  function cleanArrReferences(arr) {
    for (var i = 0; i < arr.length; i++) {
      delete arr[i].fn;
    }
  }

  if (Array.isArray(this._beforeAll)) {
    cleanArrReferences(this._beforeAll);
  }

  if (Array.isArray(this._beforeEach)) {
    cleanArrReferences(this._beforeEach);
  }

  if (Array.isArray(this._afterAll)) {
    cleanArrReferences(this._afterAll);
  }

  if (Array.isArray(this._afterEach)) {
    cleanArrReferences(this._afterEach);
  }

  for (var i = 0; i < this.tests.length; i++) {
    delete this.tests[i].fn;
  }
};

var constants = utils.defineConstants(
  /**
   * {@link Suite}-related constants.
   * @public
   * @memberof Suite
   * @alias constants
   * @readonly
   * @static
   * @enum {string}
   */
  {
    /**
     * Event emitted after a test file has been loaded Not emitted in browser.
     */
    EVENT_FILE_POST_REQUIRE: 'post-require',
    /**
     * Event emitted before a test file has been loaded. In browser, this is emitted once an interface has been selected.
     */
    EVENT_FILE_PRE_REQUIRE: 'pre-require',
    /**
     * Event emitted immediately after a test file has been loaded. Not emitted in browser.
     */
    EVENT_FILE_REQUIRE: 'require',
    /**
     * Event emitted when `global.run()` is called (use with `delay` option)
     */
    EVENT_ROOT_SUITE_RUN: 'run',

    /**
     * Namespace for collection of a `Suite`'s "after all" hooks
     */
    HOOK_TYPE_AFTER_ALL: 'afterAll',
    /**
     * Namespace for collection of a `Suite`'s "after each" hooks
     */
    HOOK_TYPE_AFTER_EACH: 'afterEach',
    /**
     * Namespace for collection of a `Suite`'s "before all" hooks
     */
    HOOK_TYPE_BEFORE_ALL: 'beforeAll',
    /**
     * Namespace for collection of a `Suite`'s "before all" hooks
     */
    HOOK_TYPE_BEFORE_EACH: 'beforeEach',

    // the following events are all deprecated

    /**
     * Emitted after an "after all" `Hook` has been added to a `Suite`. Deprecated
     */
    EVENT_SUITE_ADD_HOOK_AFTER_ALL: 'afterAll',
    /**
     * Emitted after an "after each" `Hook` has been added to a `Suite` Deprecated
     */
    EVENT_SUITE_ADD_HOOK_AFTER_EACH: 'afterEach',
    /**
     * Emitted after an "before all" `Hook` has been added to a `Suite` Deprecated
     */
    EVENT_SUITE_ADD_HOOK_BEFORE_ALL: 'beforeAll',
    /**
     * Emitted after an "before each" `Hook` has been added to a `Suite` Deprecated
     */
    EVENT_SUITE_ADD_HOOK_BEFORE_EACH: 'beforeEach',
    /**
     * Emitted after a child `Suite` has been added to a `Suite`. Deprecated
     */
    EVENT_SUITE_ADD_SUITE: 'suite',
    /**
     * Emitted after a `Test` has been added to a `Suite`. Deprecated
     */
    EVENT_SUITE_ADD_TEST: 'test'
  }
);

/**
 * @summary There are no known use cases for these events.
 * @desc This is a `Set`-like object having all keys being the constant's string value and the value being `true`.
 * @todo Remove eventually
 * @type {Object<string,boolean>}
 * @ignore
 */
var deprecatedEvents = Object.keys(constants)
  .filter(function(constant) {
    return constant.substring(0, 15) === 'EVENT_SUITE_ADD';
  })
  .reduce(function(acc, constant) {
    acc[constants[constant]] = true;
    return acc;
  }, utils.createMap());

Suite.constants = constants;

},{"./errors":6,"./hook":7,"./utils":38,"debug":45,"events":50,"ms":60}],37:[function(require,module,exports){
'use strict';
var Runnable = require('./runnable');
var utils = require('./utils');
var errors = require('./errors');
var createInvalidArgumentTypeError = errors.createInvalidArgumentTypeError;
var isString = utils.isString;

module.exports = Test;

/**
 * Initialize a new `Test` with the given `title` and callback `fn`.
 *
 * @public
 * @class
 * @extends Runnable
 * @param {String} title - Test title (required)
 * @param {Function} [fn] - Test callback.  If omitted, the Test is considered "pending"
 */
function Test(title, fn) {
  if (!isString(title)) {
    throw createInvalidArgumentTypeError(
      'Test argument "title" should be a string. Received type "' +
        typeof title +
        '"',
      'title',
      'string'
    );
  }
  Runnable.call(this, title, fn);
  this.pending = !fn;
  this.type = 'test';
}

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

/**
 * Set or get retried test
 *
 * @private
 */
Test.prototype.retriedTest = function(n) {
  if (!arguments.length) {
    return this._retriedTest;
  }
  this._retriedTest = n;
};

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.retriedTest(this.retriedTest() || this);
  test.globals(this.globals());
  test.parent = this.parent;
  test.file = this.file;
  test.ctx = this.ctx;
  return test;
};

},{"./errors":6,"./runnable":33,"./utils":38}],38:[function(require,module,exports){
(function (process,Buffer){
'use strict';

/**
 * Various utility functions used throughout Mocha's codebase.
 * @module utils
 */

/**
 * Module dependencies.
 */

var fs = require('fs');
var path = require('path');
var util = require('util');
var glob = require('glob');
var he = require('he');
var errors = require('./errors');
var createNoFilesMatchPatternError = errors.createNoFilesMatchPatternError;
var createMissingArgumentError = errors.createMissingArgumentError;

var assign = (exports.assign = require('object.assign').getPolyfill());

/**
 * Inherit the prototype methods from one constructor into another.
 *
 * @param {function} ctor - Constructor function which needs to inherit the
 *     prototype.
 * @param {function} superCtor - Constructor function to inherit prototype from.
 * @throws {TypeError} if either constructor is null, or if super constructor
 *     lacks a prototype.
 */
exports.inherits = util.inherits;

/**
 * Escape special characters in the given string of html.
 *
 * @private
 * @param  {string} html
 * @return {string}
 */
exports.escape = function(html) {
  return he.encode(String(html), {useNamedReferences: false});
};

/**
 * Test if the given obj is type of string.
 *
 * @private
 * @param {Object} obj
 * @return {boolean}
 */
exports.isString = function(obj) {
  return typeof obj === 'string';
};

/**
 * Compute a slug from the given `str`.
 *
 * @private
 * @param {string} str
 * @return {string}
 */
exports.slug = function(str) {
  return str
    .toLowerCase()
    .replace(/ +/g, '-')
    .replace(/[^-\w]/g, '');
};

/**
 * Strip the function definition from `str`, and re-indent for pre whitespace.
 *
 * @param {string} str
 * @return {string}
 */
exports.clean = function(str) {
  str = str
    .replace(/\r\n?|[\n\u2028\u2029]/g, '\n')
    .replace(/^\uFEFF/, '')
    // (traditional)->  space/name     parameters    body     (lambda)-> parameters       body   multi-statement/single          keep body content
    .replace(
      /^function(?:\s*|\s+[^(]*)\([^)]*\)\s*\{((?:.|\n)*?)\s*\}$|^\([^)]*\)\s*=>\s*(?:\{((?:.|\n)*?)\s*\}|((?:.|\n)*))$/,
      '$1$2$3'
    );

  var spaces = str.match(/^\n?( *)/)[1].length;
  var tabs = str.match(/^\n?(\t*)/)[1].length;
  var re = new RegExp(
    '^\n?' + (tabs ? '\t' : ' ') + '{' + (tabs || spaces) + '}',
    'gm'
  );

  str = str.replace(re, '');

  return str.trim();
};

/**
 * Parse the given `qs`.
 *
 * @private
 * @param {string} qs
 * @return {Object}
 */
exports.parseQuery = function(qs) {
  return qs
    .replace('?', '')
    .split('&')
    .reduce(function(obj, pair) {
      var i = pair.indexOf('=');
      var key = pair.slice(0, i);
      var val = pair.slice(++i);

      // Due to how the URLSearchParams API treats spaces
      obj[key] = decodeURIComponent(val.replace(/\+/g, '%20'));

      return obj;
    }, {});
};

/**
 * Highlight the given string of `js`.
 *
 * @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`.
 *
 * @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()`
 *
 * @private
 * @param {*} value The value to inspect.
 * @param {string} typeHint The type of the value
 * @returns {string}
 */
function emptyRepresentation(value, typeHint) {
  switch (typeHint) {
    case 'function':
      return '[Function]';
    case 'object':
      return '{}';
    case 'array':
      return '[]';
    default:
      return value.toString();
  }
}

/**
 * Takes some variable and asks `Object.prototype.toString()` what it thinks it
 * is.
 *
 * @private
 * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/toString
 * @param {*} value The value to test.
 * @returns {string} Computed type
 * @example
 * type({}) // 'object'
 * type([]) // 'array'
 * type(1) // 'number'
 * type(false) // 'boolean'
 * type(Infinity) // 'number'
 * type(null) // 'null'
 * type(new Date()) // 'date'
 * type(/foo/) // 'regexp'
 * type('type') // 'string'
 * type(global) // 'global'
 * type(new String('foo') // 'object'
 */
var type = (exports.type = function type(value) {
  if (value === undefined) {
    return 'undefined';
  } else if (value === null) {
    return 'null';
  } else if (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().
 *
 * @private
 * @see exports.type
 * @param {*} value
 * @return {string}
 */
exports.stringify = function(value) {
  var typeHint = type(value);

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

    // IE7/IE8 has a bizarre String constructor; needs to be coerced
    // into an array and back to obj.
    if (typeHint === 'string' && typeof value === 'object') {
      value = value.split('').reduce(function(acc, char, idx) {
        acc[idx] = char;
        return acc;
      }, {});
      typeHint = 'object';
    } else {
      return jsonStringify(value);
    }
  }

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

  return emptyRepresentation(value, typeHint);
};

/**
 * like JSON.stringify but more sense.
 *
 * @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 = Array.isArray(object) ? '[' : '{';
  var end = Array.isArray(object) ? ']' : '}';
  var length =
    typeof object.length === 'number'
      ? object.length
      : Object.keys(object).length;
  // `.repeat()` polyfill
  function repeat(s, n) {
    return new Array(n).join(s);
  }

  function _stringify(val) {
    switch (type(val)) {
      case 'null':
      case 'undefined':
        val = '[' + val + ']';
        break;
      case 'array':
      case 'object':
        val = jsonStringify(val, spaces, depth + 1);
        break;
      case 'boolean':
      case 'regexp':
      case 'symbol':
      case 'number':
        val =
          val === 0 && 1 / val === -Infinity // `-0`
            ? '-0'
            : val.toString();
        break;
      case 'date':
        var sDate = isNaN(val.getTime()) ? val.toString() : val.toISOString();
        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) +
      (Array.isArray(object) ? '' : '"' + i + '": ') + // key
      _stringify(object[i]) + // value
      (length ? ',' : ''); // comma
  }

  return (
    str +
    // [], {}
    (str.length !== 1 ? '\n' + repeat(' ', --space) + end : end)
  );
}

/**
 * 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()`
 *
 * @private
 * @see {@link exports.stringify}
 * @param {*} value Thing to inspect.  May or may not have properties.
 * @param {Array} [stack=[]] Stack of seen values
 * @param {string} [typeHint] Type hint
 * @return {(Object|Array|Function|string|undefined)}
 */
exports.canonicalize = function canonicalize(value, stack, typeHint) {
  var canonicalizedObj;
  /* eslint-disable no-unused-vars */
  var prop;
  /* eslint-enable no-unused-vars */
  typeHint = typeHint || type(value);
  function withStack(value, fn) {
    stack.push(value);
    fn();
    stack.pop();
  }

  stack = stack || [];

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

  switch (typeHint) {
    case 'undefined':
    case 'buffer':
    case 'null':
      canonicalizedObj = value;
      break;
    case 'array':
      withStack(value, function() {
        canonicalizedObj = value.map(function(item) {
          return exports.canonicalize(item, stack);
        });
      });
      break;
    case 'function':
      /* eslint-disable guard-for-in */
      for (prop in value) {
        canonicalizedObj = {};
        break;
      }
      /* eslint-enable guard-for-in */
      if (!canonicalizedObj) {
        canonicalizedObj = emptyRepresentation(value, typeHint);
        break;
      }
    /* falls through */
    case 'object':
      canonicalizedObj = canonicalizedObj || {};
      withStack(value, function() {
        Object.keys(value)
          .sort()
          .forEach(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;
};

/**
 * Determines if pathname has a matching file extension.
 *
 * @private
 * @param {string} pathname - Pathname to check for match.
 * @param {string[]} exts - List of file extensions (sans period).
 * @return {boolean} whether file extension matches.
 * @example
 * hasMatchingExtname('foo.html', ['js', 'css']); // => false
 */
function hasMatchingExtname(pathname, exts) {
  var suffix = path.extname(pathname).slice(1);
  return exts.some(function(element) {
    return suffix === element;
  });
}

/**
 * Determines if pathname would be a "hidden" file (or directory) on UN*X.
 *
 * @description
 * On UN*X, pathnames beginning with a full stop (aka dot) are hidden during
 * typical usage. Dotfiles, plain-text configuration files, are prime examples.
 *
 * @see {@link http://xahlee.info/UnixResource_dir/writ/unix_origin_of_dot_filename.html|Origin of Dot File Names}
 *
 * @private
 * @param {string} pathname - Pathname to check for match.
 * @return {boolean} whether pathname would be considered a hidden file.
 * @example
 * isHiddenOnUnix('.profile'); // => true
 */
function isHiddenOnUnix(pathname) {
  return path.basename(pathname)[0] === '.';
}

/**
 * Lookup file names at the given `path`.
 *
 * @description
 * Filenames are returned in _traversal_ order by the OS/filesystem.
 * **Make no assumption that the names will be sorted in any fashion.**
 *
 * @public
 * @memberof Mocha.utils
 * @param {string} filepath - Base path to start searching from.
 * @param {string[]} [extensions=[]] - File extensions to look for.
 * @param {boolean} [recursive=false] - Whether to recurse into subdirectories.
 * @return {string[]} An array of paths.
 * @throws {Error} if no files match pattern.
 * @throws {TypeError} if `filepath` is directory and `extensions` not provided.
 */
exports.lookupFiles = function lookupFiles(filepath, extensions, recursive) {
  extensions = extensions || [];
  recursive = recursive || false;
  var files = [];
  var stat;

  if (!fs.existsSync(filepath)) {
    var pattern;
    if (glob.hasMagic(filepath)) {
      // Handle glob as is without extensions
      pattern = filepath;
    } else {
      // glob pattern e.g. 'filepath+(.js|.ts)'
      var strExtensions = extensions
        .map(function(v) {
          return '.' + v;
        })
        .join('|');
      pattern = filepath + '+(' + strExtensions + ')';
    }
    files = glob.sync(pattern, {nodir: true});
    if (!files.length) {
      throw createNoFilesMatchPatternError(
        'Cannot find any files matching pattern ' + exports.dQuote(filepath),
        filepath
      );
    }
    return files;
  }

  // Handle file
  try {
    stat = fs.statSync(filepath);
    if (stat.isFile()) {
      return filepath;
    }
  } catch (err) {
    // ignore error
    return;
  }

  // Handle directory
  fs.readdirSync(filepath).forEach(function(dirent) {
    var pathname = path.join(filepath, dirent);
    var stat;

    try {
      stat = fs.statSync(pathname);
      if (stat.isDirectory()) {
        if (recursive) {
          files = files.concat(lookupFiles(pathname, extensions, recursive));
        }
        return;
      }
    } catch (err) {
      // ignore error
      return;
    }
    if (!extensions.length) {
      throw createMissingArgumentError(
        util.format(
          'Argument %s required when argument %s is a directory',
          exports.sQuote('extensions'),
          exports.sQuote('filepath')
        ),
        'extensions',
        'array'
      );
    }

    if (
      !stat.isFile() ||
      !hasMatchingExtname(pathname, extensions) ||
      isHiddenOnUnix(pathname)
    ) {
      return;
    }
    files.push(pathname);
  });

  return files;
};

/**
 * process.emitWarning or a polyfill
 * @see https://nodejs.org/api/process.html#process_process_emitwarning_warning_options
 * @ignore
 */
function emitWarning(msg, type) {
  if (process.emitWarning) {
    process.emitWarning(msg, type);
  } else {
    process.nextTick(function() {
      console.warn(type + ': ' + msg);
    });
  }
}

/**
 * Show a deprecation warning. Each distinct message is only displayed once.
 * Ignores empty messages.
 *
 * @param {string} [msg] - Warning to print
 * @private
 */
exports.deprecate = function deprecate(msg) {
  msg = String(msg);
  if (msg && !deprecate.cache[msg]) {
    deprecate.cache[msg] = true;
    emitWarning(msg, 'DeprecationWarning');
  }
};
exports.deprecate.cache = {};

/**
 * Show a generic warning.
 * Ignores empty messages.
 *
 * @param {string} [msg] - Warning to print
 * @private
 */
exports.warn = function warn(msg) {
  if (msg) {
    emitWarning(msg);
  }
};

/**
 * @summary
 * This Filter based on `mocha-clean` module.(see: `github.com/rstacruz/mocha-clean`)
 * @description
 * When invoking this function you get a filter function that get the Error.stack as an input,
 * and return a prettify output.
 * (i.e: strip Mocha and internal node functions from stack trace).
 * @returns {Function}
 */
exports.stackTraceFilter = function() {
  // TODO: Replace with `process.browser`
  var is = typeof document === 'undefined' ? {node: true} : {browser: true};
  var slash = path.sep;
  var cwd;
  if (is.node) {
    cwd = process.cwd() + slash;
  } else {
    cwd = (typeof location === 'undefined'
      ? window.location
      : location
    ).href.replace(/\/[^/]*$/, '/');
    slash = '/';
  }

  function isMochaInternal(line) {
    return (
      ~line.indexOf('node_modules' + slash + 'mocha' + slash) ||
      ~line.indexOf(slash + 'mocha.js') ||
      ~line.indexOf(slash + 'mocha.min.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 = stack.reduce(function(list, line) {
      if (isMochaInternal(line)) {
        return list;
      }

      if (is.node && isNodeInternal(line)) {
        return list;
      }

      // Clean up cwd(absolute)
      if (/:\d+:\d+\)?$/.test(line)) {
        line = line.replace('(' + cwd, '(');
      }

      list.push(line);
      return list;
    }, []);

    return stack.join('\n');
  };
};

/**
 * Crude, but effective.
 * @public
 * @param {*} value
 * @returns {boolean} Whether or not `value` is a Promise
 */
exports.isPromise = function isPromise(value) {
  return (
    typeof value === 'object' &&
    value !== null &&
    typeof value.then === 'function'
  );
};

/**
 * Clamps a numeric value to an inclusive range.
 *
 * @param {number} value - Value to be clamped.
 * @param {numer[]} range - Two element array specifying [min, max] range.
 * @returns {number} clamped value
 */
exports.clamp = function clamp(value, range) {
  return Math.min(Math.max(value, range[0]), range[1]);
};

/**
 * Single quote text by combining with undirectional ASCII quotation marks.
 *
 * @description
 * Provides a simple means of markup for quoting text to be used in output.
 * Use this to quote names of variables, methods, and packages.
 *
 * <samp>package 'foo' cannot be found</samp>
 *
 * @private
 * @param {string} str - Value to be quoted.
 * @returns {string} quoted value
 * @example
 * sQuote('n') // => 'n'
 */
exports.sQuote = function(str) {
  return "'" + str + "'";
};

/**
 * Double quote text by combining with undirectional ASCII quotation marks.
 *
 * @description
 * Provides a simple means of markup for quoting text to be used in output.
 * Use this to quote names of datatypes, classes, pathnames, and strings.
 *
 * <samp>argument 'value' must be "string" or "number"</samp>
 *
 * @private
 * @param {string} str - Value to be quoted.
 * @returns {string} quoted value
 * @example
 * dQuote('number') // => "number"
 */
exports.dQuote = function(str) {
  return '"' + str + '"';
};

/**
 * It's a noop.
 * @public
 */
exports.noop = function() {};

/**
 * Creates a map-like object.
 *
 * @description
 * A "map" is an object with no prototype, for our purposes. In some cases
 * this would be more appropriate than a `Map`, especially if your environment
 * doesn't support it. Recommended for use in Mocha's public APIs.
 *
 * @public
 * @see {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map|MDN:Map}
 * @see {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/create#Custom_and_Null_objects|MDN:Object.create - Custom objects}
 * @see {@link https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign|MDN:Object.assign}
 * @param {...*} [obj] - Arguments to `Object.assign()`.
 * @returns {Object} An object with no prototype, having `...obj` properties
 */
exports.createMap = function(obj) {
  return assign.apply(
    null,
    [Object.create(null)].concat(Array.prototype.slice.call(arguments))
  );
};

/**
 * Creates a read-only map-like object.
 *
 * @description
 * This differs from {@link module:utils.createMap createMap} only in that
 * the argument must be non-empty, because the result is frozen.
 *
 * @see {@link module:utils.createMap createMap}
 * @param {...*} [obj] - Arguments to `Object.assign()`.
 * @returns {Object} A frozen object with no prototype, having `...obj` properties
 * @throws {TypeError} if argument is not a non-empty object.
 */
exports.defineConstants = function(obj) {
  if (type(obj) !== 'object' || !Object.keys(obj).length) {
    throw new TypeError('Invalid argument; expected a non-empty object');
  }
  return Object.freeze(exports.createMap(obj));
};

/**
 * Whether current version of Node support ES modules
 *
 * @description
 * Versions prior to 10 did not support ES Modules, and version 10 has an old incompatibile version of ESM.
 * This function returns whether Node.JS has ES Module supports that is compatible with Mocha's needs,
 * which is version >=12.11.
 *
 * @returns {Boolean} whether the current version of Node.JS supports ES Modules in a way that is compatible with Mocha
 */
exports.supportsEsModules = function() {
  if (!process.browser && process.versions && process.versions.node) {
    var versionFields = process.versions.node.split('.');
    var major = +versionFields[0];
    var minor = +versionFields[1];

    if (major >= 13 || (major === 12 && minor >= 11)) {
      return true;
    }
  }
};

}).call(this,require('_process'),require("buffer").Buffer)
},{"./errors":6,"_process":69,"buffer":43,"fs":42,"glob":42,"he":54,"object.assign":65,"path":42,"util":89}],39:[function(require,module,exports){
'use strict'

exports.byteLength = byteLength
exports.toByteArray = toByteArray
exports.fromByteArray = fromByteArray

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

var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
for (var i = 0, len = code.length; i < len; ++i) {
  lookup[i] = code[i]
  revLookup[code.charCodeAt(i)] = i
}

// Support decoding URL-safe base64 strings, as Node.js does.
// See: https://en.wikipedia.org/wiki/Base64#URL_applications
revLookup['-'.charCodeAt(0)] = 62
revLookup['_'.charCodeAt(0)] = 63

function getLens (b64) {
  var len = b64.length

  if (len % 4 > 0) {
    throw new Error('Invalid string. Length must be a multiple of 4')
  }

  // Trim off extra bytes after placeholder bytes are found
  // See: https://github.com/beatgammit/base64-js/issues/42
  var validLen = b64.indexOf('=')
  if (validLen === -1) validLen = len

  var placeHoldersLen = validLen === len
    ? 0
    : 4 - (validLen % 4)

  return [validLen, placeHoldersLen]
}

// base64 is 4/3 + up to two characters of the original data
function byteLength (b64) {
  var lens = getLens(b64)
  var validLen = lens[0]
  var placeHoldersLen = lens[1]
  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
}

function _byteLength (b64, validLen, placeHoldersLen) {
  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen
}

function toByteArray (b64) {
  var tmp
  var lens = getLens(b64)
  var validLen = lens[0]
  var placeHoldersLen = lens[1]

  var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))

  var curByte = 0

  // if there are placeholders, only get up to the last complete 4 chars
  var len = placeHoldersLen > 0
    ? validLen - 4
    : validLen

  for (var i = 0; i < len; i += 4) {
    tmp =
      (revLookup[b64.charCodeAt(i)] << 18) |
      (revLookup[b64.charCodeAt(i + 1)] << 12) |
      (revLookup[b64.charCodeAt(i + 2)] << 6) |
      revLookup[b64.charCodeAt(i + 3)]
    arr[curByte++] = (tmp >> 16) & 0xFF
    arr[curByte++] = (tmp >> 8) & 0xFF
    arr[curByte++] = tmp & 0xFF
  }

  if (placeHoldersLen === 2) {
    tmp =
      (revLookup[b64.charCodeAt(i)] << 2) |
      (revLookup[b64.charCodeAt(i + 1)] >> 4)
    arr[curByte++] = tmp & 0xFF
  }

  if (placeHoldersLen === 1) {
    tmp =
      (revLookup[b64.charCodeAt(i)] << 10) |
      (revLookup[b64.charCodeAt(i + 1)] << 4) |
      (revLookup[b64.charCodeAt(i + 2)] >> 2)
    arr[curByte++] = (tmp >> 8) & 0xFF
    arr[curByte++] = 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) & 0xFF0000) +
      ((uint8[i + 1] << 8) & 0xFF00) +
      (uint8[i + 2] & 0xFF)
    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 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]
    parts.push(
      lookup[tmp >> 2] +
      lookup[(tmp << 4) & 0x3F] +
      '=='
    )
  } else if (extraBytes === 2) {
    tmp = (uint8[len - 2] << 8) + uint8[len - 1]
    parts.push(
      lookup[tmp >> 10] +
      lookup[(tmp >> 4) & 0x3F] +
      lookup[(tmp << 2) & 0x3F] +
      '='
    )
  }

  return parts.join('')
}

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

},{}],41:[function(require,module,exports){
(function (process){
var WritableStream = require('stream').Writable
var inherits = require('util').inherits

module.exports = BrowserStdout


inherits(BrowserStdout, WritableStream)

function BrowserStdout(opts) {
  if (!(this instanceof BrowserStdout)) return new BrowserStdout(opts)

  opts = opts || {}
  WritableStream.call(this, opts)
  this.label = (opts.label !== undefined) ? opts.label : 'stdout'
}

BrowserStdout.prototype._write = function(chunks, encoding, cb) {
  var output = chunks.toString ? chunks.toString() : chunks
  if (this.label === false) {
    console.log(output)
  } else {
    console.log(this.label+':', output)
  }
  process.nextTick(cb)
}

}).call(this,require('_process'))
},{"_process":69,"stream":84,"util":89}],42:[function(require,module,exports){
arguments[4][40][0].apply(exports,arguments)
},{"dup":40}],43:[function(require,module,exports){
(function (Buffer){
/*!
 * The buffer module from node.js, for the browser.
 *
 * @author   Feross Aboukhadijeh <https://feross.org>
 * @license  MIT
 */
/* eslint-disable no-proto */

'use strict'

var base64 = require('base64-js')
var ieee754 = require('ieee754')

exports.Buffer = Buffer
exports.SlowBuffer = SlowBuffer
exports.INSPECT_MAX_BYTES = 50

var K_MAX_LENGTH = 0x7fffffff
exports.kMaxLength = K_MAX_LENGTH

/**
 * If `Buffer.TYPED_ARRAY_SUPPORT`:
 *   === true    Use Uint8Array implementation (fastest)
 *   === false   Print warning and recommend using `buffer` v4.x which has an 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+.
 *
 * We report that the browser does not support typed arrays if the are not subclassable
 * using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array`
 * (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support
 * for __proto__ and has a buggy typed array implementation.
 */
Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport()

if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' &&
    typeof console.error === 'function') {
  console.error(
    'This browser lacks typed array (Uint8Array) support which is required by ' +
    '`buffer` v5.x. Use `buffer` v4.x if you require old browser support.'
  )
}

function typedArraySupport () {
  // Can typed array instances can be augmented?
  try {
    var arr = new Uint8Array(1)
    arr.__proto__ = { __proto__: Uint8Array.prototype, foo: function () { return 42 } }
    return arr.foo() === 42
  } catch (e) {
    return false
  }
}

Object.defineProperty(Buffer.prototype, 'parent', {
  enumerable: true,
  get: function () {
    if (!Buffer.isBuffer(this)) return undefined
    return this.buffer
  }
})

Object.defineProperty(Buffer.prototype, 'offset', {
  enumerable: true,
  get: function () {
    if (!Buffer.isBuffer(this)) return undefined
    return this.byteOffset
  }
})

function createBuffer (length) {
  if (length > K_MAX_LENGTH) {
    throw new RangeError('The value "' + length + '" is invalid for option "size"')
  }
  // Return an augmented `Uint8Array` instance
  var buf = new Uint8Array(length)
  buf.__proto__ = Buffer.prototype
  return buf
}

/**
 * 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) {
  // Common case.
  if (typeof arg === 'number') {
    if (typeof encodingOrOffset === 'string') {
      throw new TypeError(
        'The "string" argument must be of type string. Received type number'
      )
    }
    return allocUnsafe(arg)
  }
  return from(arg, encodingOrOffset, length)
}

// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
if (typeof Symbol !== 'undefined' && Symbol.species != null &&
    Buffer[Symbol.species] === Buffer) {
  Object.defineProperty(Buffer, Symbol.species, {
    value: null,
    configurable: true,
    enumerable: false,
    writable: false
  })
}

Buffer.poolSize = 8192 // not used by this implementation

function from (value, encodingOrOffset, length) {
  if (typeof value === 'string') {
    return fromString(value, encodingOrOffset)
  }

  if (ArrayBuffer.isView(value)) {
    return fromArrayLike(value)
  }

  if (value == null) {
    throw TypeError(
      'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
      'or Array-like Object. Received type ' + (typeof value)
    )
  }

  if (isInstance(value, ArrayBuffer) ||
      (value && isInstance(value.buffer, ArrayBuffer))) {
    return fromArrayBuffer(value, encodingOrOffset, length)
  }

  if (typeof value === 'number') {
    throw new TypeError(
      'The "value" argument must not be of type number. Received type number'
    )
  }

  var valueOf = value.valueOf && value.valueOf()
  if (valueOf != null && valueOf !== value) {
    return Buffer.from(valueOf, encodingOrOffset, length)
  }

  var b = fromObject(value)
  if (b) return b

  if (typeof Symbol !== 'undefined' && Symbol.toPrimitive != null &&
      typeof value[Symbol.toPrimitive] === 'function') {
    return Buffer.from(
      value[Symbol.toPrimitive]('string'), encodingOrOffset, length
    )
  }

  throw new TypeError(
    'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' +
    'or Array-like Object. Received type ' + (typeof 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(value, encodingOrOffset, length)
}

// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug:
// https://github.com/feross/buffer/pull/148
Buffer.prototype.__proto__ = Uint8Array.prototype
Buffer.__proto__ = Uint8Array

function assertSize (size) {
  if (typeof size !== 'number') {
    throw new TypeError('"size" argument must be of type number')
  } else if (size < 0) {
    throw new RangeError('The value "' + size + '" is invalid for option "size"')
  }
}

function alloc (size, fill, encoding) {
  assertSize(size)
  if (size <= 0) {
    return createBuffer(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(size).fill(fill, encoding)
      : createBuffer(size).fill(fill)
  }
  return createBuffer(size)
}

/**
 * Creates a new filled Buffer instance.
 * alloc(size[, fill[, encoding]])
 **/
Buffer.alloc = function (size, fill, encoding) {
  return alloc(size, fill, encoding)
}

function allocUnsafe (size) {
  assertSize(size)
  return createBuffer(size < 0 ? 0 : checked(size) | 0)
}

/**
 * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
 * */
Buffer.allocUnsafe = function (size) {
  return allocUnsafe(size)
}
/**
 * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
 */
Buffer.allocUnsafeSlow = function (size) {
  return allocUnsafe(size)
}

function fromString (string, encoding) {
  if (typeof encoding !== 'string' || encoding === '') {
    encoding = 'utf8'
  }

  if (!Buffer.isEncoding(encoding)) {
    throw new TypeError('Unknown encoding: ' + encoding)
  }

  var length = byteLength(string, encoding) | 0
  var buf = createBuffer(length)

  var actual = buf.write(string, encoding)

  if (actual !== length) {
    // Writing a hex string, for example, that contains invalid characters will
    // cause everything after the first invalid character to be ignored. (e.g.
    // 'abxxcd' will be treated as 'ab')
    buf = buf.slice(0, actual)
  }

  return buf
}

function fromArrayLike (array) {
  var length = array.length < 0 ? 0 : checked(array.length) | 0
  var buf = createBuffer(length)
  for (var i = 0; i < length; i += 1) {
    buf[i] = array[i] & 255
  }
  return buf
}

function fromArrayBuffer (array, byteOffset, length) {
  if (byteOffset < 0 || array.byteLength < byteOffset) {
    throw new RangeError('"offset" is outside of buffer bounds')
  }

  if (array.byteLength < byteOffset + (length || 0)) {
    throw new RangeError('"length" is outside of buffer bounds')
  }

  var buf
  if (byteOffset === undefined && length === undefined) {
    buf = new Uint8Array(array)
  } else if (length === undefined) {
    buf = new Uint8Array(array, byteOffset)
  } else {
    buf = new Uint8Array(array, byteOffset, length)
  }

  // Return an augmented `Uint8Array` instance
  buf.__proto__ = Buffer.prototype
  return buf
}

function fromObject (obj) {
  if (Buffer.isBuffer(obj)) {
    var len = checked(obj.length) | 0
    var buf = createBuffer(len)

    if (buf.length === 0) {
      return buf
    }

    obj.copy(buf, 0, 0, len)
    return buf
  }

  if (obj.length !== undefined) {
    if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) {
      return createBuffer(0)
    }
    return fromArrayLike(obj)
  }

  if (obj.type === 'Buffer' && Array.isArray(obj.data)) {
    return fromArrayLike(obj.data)
  }
}

function checked (length) {
  // Note: cannot use `length < K_MAX_LENGTH` here because that fails when
  // length is NaN (which is otherwise coerced to zero.)
  if (length >= K_MAX_LENGTH) {
    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
                         'size: 0x' + K_MAX_LENGTH.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 === true &&
    b !== Buffer.prototype // so Buffer.isBuffer(Buffer.prototype) will be false
}

Buffer.compare = function compare (a, b) {
  if (isInstance(a, Uint8Array)) a = Buffer.from(a, a.offset, a.byteLength)
  if (isInstance(b, Uint8Array)) b = Buffer.from(b, b.offset, b.byteLength)
  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
    throw new TypeError(
      'The "buf1", "buf2" arguments must be one of type Buffer or Uint8Array'
    )
  }

  if (a === b) return 0

  var x = a.length
  var y = b.length

  for (var i = 0, len = Math.min(x, y); i < len; ++i) {
    if (a[i] !== b[i]) {
      x = a[i]
      y = b[i]
      break
    }
  }

  if (x < y) return -1
  if (y < x) return 1
  return 0
}

Buffer.isEncoding = function isEncoding (encoding) {
  switch (String(encoding).toLowerCase()) {
    case 'hex':
    case 'utf8':
    case 'utf-8':
    case 'ascii':
    case 'latin1':
    case 'binary':
    case 'base64':
    case 'ucs2':
    case 'ucs-2':
    case 'utf16le':
    case 'utf-16le':
      return true
    default:
      return false
  }
}

Buffer.concat = function concat (list, length) {
  if (!Array.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 (isInstance(buf, Uint8Array)) {
      buf = Buffer.from(buf)
    }
    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 (ArrayBuffer.isView(string) || isInstance(string, ArrayBuffer)) {
    return string.byteLength
  }
  if (typeof string !== 'string') {
    throw new TypeError(
      'The "string" argument must be one of type string, Buffer, or ArrayBuffer. ' +
      'Received type ' + typeof string
    )
  }

  var len = string.length
  var mustMatch = (arguments.length > 2 && arguments[2] === true)
  if (!mustMatch && len === 0) return 0

  // Use a for loop to avoid recursion
  var loweredCase = false
  for (;;) {
    switch (encoding) {
      case 'ascii':
      case 'latin1':
      case 'binary':
        return len
      case 'utf8':
      case 'utf-8':
        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 mustMatch ? -1 : utf8ToBytes(string).length // assume utf8
        }
        encoding = ('' + encoding).toLowerCase()
        loweredCase = true
    }
  }
}
Buffer.byteLength = byteLength

function slowToString (encoding, start, end) {
  var loweredCase = false

  // No need to verify that "this.length <= MAX_UINT32" since it's a read-only
  // property of a typed array.

  // This behaves neither like String nor Uint8Array in that we set start/end
  // to their upper/lower bounds if the value passed is out of range.
  // undefined is handled specially as per ECMA-262 6th Edition,
  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
  if (start === undefined || start < 0) {
    start = 0
  }
  // Return early if start > this.length. Done here to prevent potential uint32
  // coercion fail below.
  if (start > this.length) {
    return ''
  }

  if (end === undefined || end > this.length) {
    end = this.length
  }

  if (end <= 0) {
    return ''
  }

  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.
  end >>>= 0
  start >>>= 0

  if (end <= start) {
    return ''
  }

  if (!encoding) encoding = 'utf8'

  while (true) {
    switch (encoding) {
      case 'hex':
        return hexSlice(this, start, end)

      case 'utf8':
      case 'utf-8':
        return utf8Slice(this, start, end)

      case 'ascii':
        return asciiSlice(this, start, end)

      case 'latin1':
      case 'binary':
        return latin1Slice(this, start, end)

      case 'base64':
        return base64Slice(this, start, end)

      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return utf16leSlice(this, start, end)

      default:
        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
        encoding = (encoding + '').toLowerCase()
        loweredCase = true
    }
  }
}

// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package)
// to detect a Buffer instance. It's not possible to use `instanceof Buffer`
// reliably in a browserify context because there could be multiple different
// copies of the 'buffer' package in use. This method works even for Buffer
// instances that were created from another copy of the `buffer` package.
// See: https://github.com/feross/buffer/issues/154
Buffer.prototype._isBuffer = true

function swap (b, n, m) {
  var i = b[n]
  b[n] = b[m]
  b[m] = i
}

Buffer.prototype.swap16 = function swap16 () {
  var len = this.length
  if (len % 2 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 16-bits')
  }
  for (var i = 0; i < len; i += 2) {
    swap(this, i, i + 1)
  }
  return this
}

Buffer.prototype.swap32 = function swap32 () {
  var len = this.length
  if (len % 4 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 32-bits')
  }
  for (var i = 0; i < len; i += 4) {
    swap(this, i, i + 3)
    swap(this, i + 1, i + 2)
  }
  return this
}

Buffer.prototype.swap64 = function swap64 () {
  var len = this.length
  if (len % 8 !== 0) {
    throw new RangeError('Buffer size must be a multiple of 64-bits')
  }
  for (var i = 0; i < len; i += 8) {
    swap(this, i, i + 7)
    swap(this, i + 1, i + 6)
    swap(this, i + 2, i + 5)
    swap(this, i + 3, i + 4)
  }
  return this
}

Buffer.prototype.toString = function toString () {
  var length = this.length
  if (length === 0) return ''
  if (arguments.length === 0) return utf8Slice(this, 0, length)
  return slowToString.apply(this, arguments)
}

Buffer.prototype.toLocaleString = Buffer.prototype.toString

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
  str = this.toString('hex', 0, max).replace(/(.{2})/g, '$1 ').trim()
  if (this.length > max) str += ' ... '
  return '<Buffer ' + str + '>'
}

Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
  if (isInstance(target, Uint8Array)) {
    target = Buffer.from(target, target.offset, target.byteLength)
  }
  if (!Buffer.isBuffer(target)) {
    throw new TypeError(
      'The "target" argument must be one of type Buffer or Uint8Array. ' +
      'Received type ' + (typeof target)
    )
  }

  if (start === undefined) {
    start = 0
  }
  if (end === undefined) {
    end = target ? target.length : 0
  }
  if (thisStart === undefined) {
    thisStart = 0
  }
  if (thisEnd === undefined) {
    thisEnd = this.length
  }

  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
    throw new RangeError('out of range index')
  }

  if (thisStart >= thisEnd && start >= end) {
    return 0
  }
  if (thisStart >= thisEnd) {
    return -1
  }
  if (start >= end) {
    return 1
  }

  start >>>= 0
  end >>>= 0
  thisStart >>>= 0
  thisEnd >>>= 0

  if (this === target) return 0

  var x = thisEnd - thisStart
  var y = end - start
  var len = Math.min(x, y)

  var thisCopy = this.slice(thisStart, thisEnd)
  var targetCopy = target.slice(start, end)

  for (var i = 0; i < len; ++i) {
    if (thisCopy[i] !== targetCopy[i]) {
      x = thisCopy[i]
      y = targetCopy[i]
      break
    }
  }

  if (x < y) return -1
  if (y < x) return 1
  return 0
}

// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
//
// Arguments:
// - buffer - a Buffer to search
// - val - a string, Buffer, or number
// - byteOffset - an index into `buffer`; will be clamped to an int32
// - encoding - an optional encoding, relevant is val is a string
// - dir - true for indexOf, false for lastIndexOf
function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
  // Empty buffer means no match
  if (buffer.length === 0) return -1

  // Normalize byteOffset
  if (typeof byteOffset === 'string') {
    encoding = byteOffset
    byteOffset = 0
  } else if (byteOffset > 0x7fffffff) {
    byteOffset = 0x7fffffff
  } else if (byteOffset < -0x80000000) {
    byteOffset = -0x80000000
  }
  byteOffset = +byteOffset // Coerce to Number.
  if (numberIsNaN(byteOffset)) {
    // byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
    byteOffset = dir ? 0 : (buffer.length - 1)
  }

  // Normalize byteOffset: negative offsets start from the end of the buffer
  if (byteOffset < 0) byteOffset = buffer.length + byteOffset
  if (byteOffset >= buffer.length) {
    if (dir) return -1
    else byteOffset = buffer.length - 1
  } else if (byteOffset < 0) {
    if (dir) byteOffset = 0
    else return -1
  }

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

  // Finally, search either indexOf (if dir is true) or lastIndexOf
  if (Buffer.isBuffer(val)) {
    // Special case: looking for empty string/buffer always fails
    if (val.length === 0) {
      return -1
    }
    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
  } else if (typeof val === 'number') {
    val = val & 0xFF // Search for a byte value [0-255]
    if (typeof Uint8Array.prototype.indexOf === 'function') {
      if (dir) {
        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
      } else {
        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
      }
    }
    return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
  }

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

function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
  var indexSize = 1
  var arrLength = arr.length
  var valLength = val.length

  if (encoding !== undefined) {
    encoding = String(encoding).toLowerCase()
    if (encoding === 'ucs2' || encoding === 'ucs-2' ||
        encoding === 'utf16le' || encoding === 'utf-16le') {
      if (arr.length < 2 || val.length < 2) {
        return -1
      }
      indexSize = 2
      arrLength /= 2
      valLength /= 2
      byteOffset /= 2
    }
  }

  function read (buf, i) {
    if (indexSize === 1) {
      return buf[i]
    } else {
      return buf.readUInt16BE(i * indexSize)
    }
  }

  var i
  if (dir) {
    var foundIndex = -1
    for (i = byteOffset; i < arrLength; i++) {
      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
        if (foundIndex === -1) foundIndex = i
        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
      } else {
        if (foundIndex !== -1) i -= i - foundIndex
        foundIndex = -1
      }
    }
  } else {
    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
    for (i = byteOffset; i >= 0; i--) {
      var found = true
      for (var j = 0; j < valLength; j++) {
        if (read(arr, i + j) !== read(val, j)) {
          found = false
          break
        }
      }
      if (found) return i
    }
  }

  return -1
}

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

Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
}

Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
}

function hexWrite (buf, string, offset, length) {
  offset = Number(offset) || 0
  var remaining = buf.length - offset
  if (!length) {
    length = remaining
  } else {
    length = Number(length)
    if (length > remaining) {
      length = remaining
    }
  }

  var strLen = string.length

  if (length > strLen / 2) {
    length = strLen / 2
  }
  for (var i = 0; i < length; ++i) {
    var parsed = parseInt(string.substr(i * 2, 2), 16)
    if (numberIsNaN(parsed)) return i
    buf[offset + i] = parsed
  }
  return i
}

function utf8Write (buf, string, offset, length) {
  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
}

function asciiWrite (buf, string, offset, length) {
  return blitBuffer(asciiToBytes(string), buf, offset, length)
}

function latin1Write (buf, string, offset, length) {
  return asciiWrite(buf, string, offset, length)
}

function base64Write (buf, string, offset, length) {
  return blitBuffer(base64ToBytes(string), buf, offset, length)
}

function ucs2Write (buf, string, offset, length) {
  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
}

Buffer.prototype.write = function write (string, offset, length, encoding) {
  // Buffer#write(string)
  if (offset === undefined) {
    encoding = 'utf8'
    length = this.length
    offset = 0
  // Buffer#write(string, encoding)
  } else if (length === undefined && typeof offset === 'string') {
    encoding = offset
    length = this.length
    offset = 0
  // Buffer#write(string, offset[, length][, encoding])
  } else if (isFinite(offset)) {
    offset = offset >>> 0
    if (isFinite(length)) {
      length = length >>> 0
      if (encoding === undefined) encoding = 'utf8'
    } else {
      encoding = length
      length = undefined
    }
  } else {
    throw new Error(
      'Buffer.write(string, encoding, offset[, length]) is no longer supported'
    )
  }

  var remaining = this.length - offset
  if (length === undefined || length > remaining) length = remaining

  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
    throw new RangeError('Attempt to write outside buffer bounds')
  }

  if (!encoding) encoding = 'utf8'

  var loweredCase = false
  for (;;) {
    switch (encoding) {
      case 'hex':
        return hexWrite(this, string, offset, length)

      case 'utf8':
      case 'utf-8':
        return utf8Write(this, string, offset, length)

      case 'ascii':
        return asciiWrite(this, string, offset, length)

      case 'latin1':
      case 'binary':
        return latin1Write(this, string, offset, length)

      case 'base64':
        // Warning: maxLength not taken into account in base64Write
        return base64Write(this, string, offset, length)

      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return ucs2Write(this, string, offset, length)

      default:
        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
        encoding = ('' + encoding).toLowerCase()
        loweredCase = true
    }
  }
}

Buffer.prototype.toJSON = function toJSON () {
  return {
    type: 'Buffer',
    data: Array.prototype.slice.call(this._arr || this, 0)
  }
}

function base64Slice (buf, start, end) {
  if (start === 0 && end === buf.length) {
    return base64.fromByteArray(buf)
  } else {
    return base64.fromByteArray(buf.slice(start, end))
  }
}

function utf8Slice (buf, start, end) {
  end = Math.min(buf.length, end)
  var res = []

  var i = start
  while (i < end) {
    var firstByte = buf[i]
    var codePoint = null
    var bytesPerSequence = (firstByte > 0xEF) ? 4
      : (firstByte > 0xDF) ? 3
        : (firstByte > 0xBF) ? 2
          : 1

    if (i + bytesPerSequence <= end) {
      var secondByte, thirdByte, fourthByte, tempCodePoint

      switch (bytesPerSequence) {
        case 1:
          if (firstByte < 0x80) {
            codePoint = firstByte
          }
          break
        case 2:
          secondByte = buf[i + 1]
          if ((secondByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
            if (tempCodePoint > 0x7F) {
              codePoint = tempCodePoint
            }
          }
          break
        case 3:
          secondByte = buf[i + 1]
          thirdByte = buf[i + 2]
          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
              codePoint = tempCodePoint
            }
          }
          break
        case 4:
          secondByte = buf[i + 1]
          thirdByte = buf[i + 2]
          fourthByte = buf[i + 3]
          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
              codePoint = tempCodePoint
            }
          }
      }
    }

    if (codePoint === null) {
      // we did not generate a valid codePoint so insert a
      // replacement char (U+FFFD) and advance only 1 byte
      codePoint = 0xFFFD
      bytesPerSequence = 1
    } else if (codePoint > 0xFFFF) {
      // encode to utf16 (surrogate pair dance)
      codePoint -= 0x10000
      res.push(codePoint >>> 10 & 0x3FF | 0xD800)
      codePoint = 0xDC00 | codePoint & 0x3FF
    }

    res.push(codePoint)
    i += bytesPerSequence
  }

  return decodeCodePointsArray(res)
}

// Based on http://stackoverflow.com/a/22747272/680742, the browser with
// the lowest limit is Chrome, with 0x10000 args.
// We go 1 magnitude less, for safety
var MAX_ARGUMENTS_LENGTH = 0x1000

function decodeCodePointsArray (codePoints) {
  var len = codePoints.length
  if (len <= MAX_ARGUMENTS_LENGTH) {
    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
  }

  // Decode in chunks to avoid "call stack size exceeded".
  var res = ''
  var i = 0
  while (i < len) {
    res += String.fromCharCode.apply(
      String,
      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
    )
  }
  return res
}

function asciiSlice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; ++i) {
    ret += String.fromCharCode(buf[i] & 0x7F)
  }
  return ret
}

function latin1Slice (buf, start, end) {
  var ret = ''
  end = Math.min(buf.length, end)

  for (var i = start; i < end; ++i) {
    ret += String.fromCharCode(buf[i])
  }
  return ret
}

function hexSlice (buf, start, end) {
  var len = buf.length

  if (!start || start < 0) start = 0
  if (!end || end < 0 || end > len) end = len

  var out = ''
  for (var i = start; i < end; ++i) {
    out += toHex(buf[i])
  }
  return out
}

function utf16leSlice (buf, start, end) {
  var bytes = buf.slice(start, end)
  var res = ''
  for (var i = 0; i < bytes.length; i += 2) {
    res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256))
  }
  return res
}

Buffer.prototype.slice = function slice (start, end) {
  var len = this.length
  start = ~~start
  end = end === undefined ? len : ~~end

  if (start < 0) {
    start += len
    if (start < 0) start = 0
  } else if (start > len) {
    start = len
  }

  if (end < 0) {
    end += len
    if (end < 0) end = 0
  } else if (end > len) {
    end = len
  }

  if (end < start) end = start

  var newBuf = this.subarray(start, end)
  // Return an augmented `Uint8Array` instance
  newBuf.__proto__ = Buffer.prototype
  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) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 1, this.length)
  return this[offset]
}

Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  return this[offset] | (this[offset + 1] << 8)
}

Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 2, this.length)
  return (this[offset] << 8) | this[offset + 1]
}

Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
  offset = offset >>> 0
  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) {
  offset = offset >>> 0
  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) {
  offset = offset >>> 0
  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) {
  offset = offset >>> 0
  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) {
  offset = offset >>> 0
  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) {
  offset = offset >>> 0
  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) {
  offset = offset >>> 0
  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) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, true, 23, 4)
}

Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 4, this.length)
  return ieee754.read(this, offset, false, 23, 4)
}

Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
  offset = offset >>> 0
  if (!noAssert) checkOffset(offset, 8, this.length)
  return ieee754.read(this, offset, true, 52, 8)
}

Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
  offset = offset >>> 0
  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)
  this[offset] = (value & 0xff)
  return offset + 1
}

Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
  this[offset] = (value & 0xff)
  this[offset + 1] = (value >>> 8)
  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)
  this[offset] = (value >>> 8)
  this[offset + 1] = (value & 0xff)
  return offset + 2
}

Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
  value = +value
  offset = offset >>> 0
  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
  this[offset + 3] = (value >>> 24)
  this[offset + 2] = (value >>> 16)
  this[offset + 1] = (value >>> 8)
  this[offset] = (value & 0xff)
  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)
  this[offset] = (value >>> 24)
  this[offset + 1] = (value >>> 16)
  this[offset + 2] = (value >>> 8)
  this[offset + 3] = (value & 0xff)
  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 (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)
  this[offset] = (value & 0xff)
  this[offset + 1] = (value >>> 8)
  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)
  this[offset] = (value >>> 8)
  this[offset + 1] = (value & 0xff)
  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)
  this[offset] = (value & 0xff)
  this[offset + 1] = (value >>> 8)
  this[offset + 2] = (value >>> 16)
  this[offset + 3] = (value >>> 24)
  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
  this[offset] = (value >>> 24)
  this[offset + 1] = (value >>> 16)
  this[offset + 2] = (value >>> 8)
  this[offset + 3] = (value & 0xff)
  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) {
  value = +value
  offset = offset >>> 0
  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) {
  value = +value
  offset = offset >>> 0
  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 (!Buffer.isBuffer(target)) throw new TypeError('argument should be a Buffer')
  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('Index out of range')
  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

  if (this === target && typeof Uint8Array.prototype.copyWithin === 'function') {
    // Use built-in when available, missing from IE11
    this.copyWithin(targetStart, start, end)
  } else if (this === target && start < targetStart && targetStart < end) {
    // descending copy from end
    for (var i = len - 1; i >= 0; --i) {
      target[i + targetStart] = this[i + start]
    }
  } else {
    Uint8Array.prototype.set.call(
      target,
      this.subarray(start, end),
      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 (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)
    }
    if (val.length === 1) {
      var code = val.charCodeAt(0)
      if ((encoding === 'utf8' && code < 128) ||
          encoding === 'latin1') {
        // Fast path: If `val` fits into a single byte, use that numeric value.
        val = code
      }
    }
  } 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
      : Buffer.from(val, encoding)
    var len = bytes.length
    if (len === 0) {
      throw new TypeError('The value "' + val +
        '" is invalid for argument "value"')
    }
    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 takes equal signs as end of the Base64 encoding
  str = str.split('=')[0]
  // Node strips out invalid characters like \n and \t from the string, base64-js does not
  str = str.trim().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 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
}

// ArrayBuffer or Uint8Array objects from other contexts (i.e. iframes) do not pass
// the `instanceof` check but they should be treated as of that type.
// See: https://github.com/feross/buffer/issues/166
function isInstance (obj, type) {
  return obj instanceof type ||
    (obj != null && obj.constructor != null && obj.constructor.name != null &&
      obj.constructor.name === type.name)
}
function numberIsNaN (obj) {
  // For IE11 support
  return obj !== obj // eslint-disable-line no-self-compare
}

}).call(this,require("buffer").Buffer)
},{"base64-js":39,"buffer":43,"ieee754":55}],44:[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":57}],45:[function(require,module,exports){
(function (process){
"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

/* eslint-env browser */

/**
 * This is the web browser implementation of `debug()`.
 */
exports.log = log;
exports.formatArgs = formatArgs;
exports.save = save;
exports.load = load;
exports.useColors = useColors;
exports.storage = localstorage();
/**
 * Colors.
 */

exports.colors = ['#0000CC', '#0000FF', '#0033CC', '#0033FF', '#0066CC', '#0066FF', '#0099CC', '#0099FF', '#00CC00', '#00CC33', '#00CC66', '#00CC99', '#00CCCC', '#00CCFF', '#3300CC', '#3300FF', '#3333CC', '#3333FF', '#3366CC', '#3366FF', '#3399CC', '#3399FF', '#33CC00', '#33CC33', '#33CC66', '#33CC99', '#33CCCC', '#33CCFF', '#6600CC', '#6600FF', '#6633CC', '#6633FF', '#66CC00', '#66CC33', '#9900CC', '#9900FF', '#9933CC', '#9933FF', '#99CC00', '#99CC33', '#CC0000', '#CC0033', '#CC0066', '#CC0099', '#CC00CC', '#CC00FF', '#CC3300', '#CC3333', '#CC3366', '#CC3399', '#CC33CC', '#CC33FF', '#CC6600', '#CC6633', '#CC9900', '#CC9933', '#CCCC00', '#CCCC33', '#FF0000', '#FF0033', '#FF0066', '#FF0099', '#FF00CC', '#FF00FF', '#FF3300', '#FF3333', '#FF3366', '#FF3399', '#FF33CC', '#FF33FF', '#FF6600', '#FF6633', '#FF9900', '#FF9933', '#FFCC00', '#FFCC33'];
/**
 * Currently only WebKit-based Web Inspectors, Firefox >= v31,
 * and the Firebug extension (any Firefox version) are known
 * to support "%c" CSS customizations.
 *
 * TODO: add a `localStorage` variable to explicitly enable/disable colors
 */
// eslint-disable-next-line complexity

function useColors() {
  // NB: In an Electron preload script, document will be defined but not fully
  // initialized. Since we know we're in Chrome, we'll just detect this case
  // explicitly
  if (typeof window !== 'undefined' && window.process && (window.process.type === 'renderer' || window.process.__nwjs)) {
    return true;
  } // Internet Explorer and Edge do not support colors.


  if (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/(edge|trident)\/(\d+)/)) {
    return false;
  } // Is webkit? http://stackoverflow.com/a/16459606/376773
  // document is undefined in react-native: https://github.com/facebook/react-native/pull/1632


  return typeof document !== 'undefined' && document.documentElement && document.documentElement.style && document.documentElement.style.WebkitAppearance || // Is firebug? http://stackoverflow.com/a/398120/376773
  typeof window !== 'undefined' && window.console && (window.console.firebug || window.console.exception && window.console.table) || // Is firefox >= v31?
  // https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages
  typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/) && parseInt(RegExp.$1, 10) >= 31 || // Double check webkit in userAgent just in case we are in a worker
  typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/applewebkit\/(\d+)/);
}
/**
 * Colorize log arguments if enabled.
 *
 * @api public
 */


function formatArgs(args) {
  args[0] = (this.useColors ? '%c' : '') + this.namespace + (this.useColors ? ' %c' : ' ') + args[0] + (this.useColors ? '%c ' : ' ') + '+' + module.exports.humanize(this.diff);

  if (!this.useColors) {
    return;
  }

  var c = 'color: ' + this.color;
  args.splice(1, 0, c, 'color: inherit'); // The final "%c" is somewhat tricky, because there could be other
  // arguments passed either before or after the %c, so we need to
  // figure out the correct index to insert the CSS into

  var index = 0;
  var lastC = 0;
  args[0].replace(/%[a-zA-Z%]/g, function (match) {
    if (match === '%%') {
      return;
    }

    index++;

    if (match === '%c') {
      // We only are interested in the *last* %c
      // (the user may have provided their own)
      lastC = index;
    }
  });
  args.splice(lastC, 0, c);
}
/**
 * Invokes `console.log()` when available.
 * No-op when `console.log` is not a "function".
 *
 * @api public
 */


function log() {
  var _console;

  // This hackery is required for IE8/9, where
  // the `console.log` function doesn't have 'apply'
  return (typeof console === "undefined" ? "undefined" : _typeof(console)) === 'object' && console.log && (_console = console).log.apply(_console, arguments);
}
/**
 * Save `namespaces`.
 *
 * @param {String} namespaces
 * @api private
 */


function save(namespaces) {
  try {
    if (namespaces) {
      exports.storage.setItem('debug', namespaces);
    } else {
      exports.storage.removeItem('debug');
    }
  } catch (error) {// Swallow
    // XXX (@Qix-) should we be logging these?
  }
}
/**
 * Load `namespaces`.
 *
 * @return {String} returns the previously persisted debug modes
 * @api private
 */


function load() {
  var r;

  try {
    r = exports.storage.getItem('debug');
  } catch (error) {} // Swallow
  // XXX (@Qix-) should we be logging these?
  // If debug isn't set in LS, and we're in Electron, try to load $DEBUG


  if (!r && typeof process !== 'undefined' && 'env' in process) {
    r = process.env.DEBUG;
  }

  return r;
}
/**
 * Localstorage attempts to return the localstorage.
 *
 * This is necessary because safari throws
 * when a user disables cookies/localstorage
 * and you attempt to access it.
 *
 * @return {LocalStorage}
 * @api private
 */


function localstorage() {
  try {
    // TVMLKit (Apple TV JS Runtime) does not have a window object, just localStorage in the global context
    // The Browser also has localStorage in the global context.
    return localStorage;
  } catch (error) {// Swallow
    // XXX (@Qix-) should we be logging these?
  }
}

module.exports = require('./common')(exports);
var formatters = module.exports.formatters;
/**
 * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.
 */

formatters.j = function (v) {
  try {
    return JSON.stringify(v);
  } catch (error) {
    return '[UnexpectedJSONParseError]: ' + error.message;
  }
};


}).call(this,require('_process'))
},{"./common":46,"_process":69}],46:[function(require,module,exports){
"use strict";

/**
 * This is the common logic for both the Node.js and web browser
 * implementations of `debug()`.
 */
function setup(env) {
  createDebug.debug = createDebug;
  createDebug.default = createDebug;
  createDebug.coerce = coerce;
  createDebug.disable = disable;
  createDebug.enable = enable;
  createDebug.enabled = enabled;
  createDebug.humanize = require('ms');
  Object.keys(env).forEach(function (key) {
    createDebug[key] = env[key];
  });
  /**
  * Active `debug` instances.
  */

  createDebug.instances = [];
  /**
  * The currently active debug mode names, and names to skip.
  */

  createDebug.names = [];
  createDebug.skips = [];
  /**
  * Map of special "%n" handling functions, for the debug "format" argument.
  *
  * Valid key names are a single, lower or upper-case letter, i.e. "n" and "N".
  */

  createDebug.formatters = {};
  /**
  * Selects a color for a debug namespace
  * @param {String} namespace The namespace string for the for the debug instance to be colored
  * @return {Number|String} An ANSI color code for the given namespace
  * @api private
  */

  function selectColor(namespace) {
    var hash = 0;

    for (var i = 0; i < namespace.length; i++) {
      hash = (hash << 5) - hash + namespace.charCodeAt(i);
      hash |= 0; // Convert to 32bit integer
    }

    return createDebug.colors[Math.abs(hash) % createDebug.colors.length];
  }

  createDebug.selectColor = selectColor;
  /**
  * Create a debugger with the given `namespace`.
  *
  * @param {String} namespace
  * @return {Function}
  * @api public
  */

  function createDebug(namespace) {
    var prevTime;

    function debug() {
      // Disabled?
      if (!debug.enabled) {
        return;
      }

      for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
        args[_key] = arguments[_key];
      }

      var self = debug; // Set `diff` timestamp

      var curr = Number(new Date());
      var ms = curr - (prevTime || curr);
      self.diff = ms;
      self.prev = prevTime;
      self.curr = curr;
      prevTime = curr;
      args[0] = createDebug.coerce(args[0]);

      if (typeof args[0] !== 'string') {
        // Anything else let's inspect with %O
        args.unshift('%O');
      } // Apply any `formatters` transformations


      var index = 0;
      args[0] = args[0].replace(/%([a-zA-Z%])/g, function (match, format) {
        // If we encounter an escaped % then don't increase the array index
        if (match === '%%') {
          return match;
        }

        index++;
        var formatter = createDebug.formatters[format];

        if (typeof formatter === 'function') {
          var val = args[index];
          match = formatter.call(self, val); // Now we need to remove `args[index]` since it's inlined in the `format`

          args.splice(index, 1);
          index--;
        }

        return match;
      }); // Apply env-specific formatting (colors, etc.)

      createDebug.formatArgs.call(self, args);
      var logFn = self.log || createDebug.log;
      logFn.apply(self, args);
    }

    debug.namespace = namespace;
    debug.enabled = createDebug.enabled(namespace);
    debug.useColors = createDebug.useColors();
    debug.color = selectColor(namespace);
    debug.destroy = destroy;
    debug.extend = extend; // Debug.formatArgs = formatArgs;
    // debug.rawLog = rawLog;
    // env-specific initialization logic for debug instances

    if (typeof createDebug.init === 'function') {
      createDebug.init(debug);
    }

    createDebug.instances.push(debug);
    return debug;
  }

  function destroy() {
    var index = createDebug.instances.indexOf(this);

    if (index !== -1) {
      createDebug.instances.splice(index, 1);
      return true;
    }

    return false;
  }

  function extend(namespace, delimiter) {
    return createDebug(this.namespace + (typeof delimiter === 'undefined' ? ':' : delimiter) + namespace);
  }
  /**
  * Enables a debug mode by namespaces. This can include modes
  * separated by a colon and wildcards.
  *
  * @param {String} namespaces
  * @api public
  */


  function enable(namespaces) {
    createDebug.save(namespaces);
    createDebug.names = [];
    createDebug.skips = [];
    var i;
    var split = (typeof namespaces === 'string' ? namespaces : '').split(/[\s,]+/);
    var len = split.length;

    for (i = 0; i < len; i++) {
      if (!split[i]) {
        // ignore empty strings
        continue;
      }

      namespaces = split[i].replace(/\*/g, '.*?');

      if (namespaces[0] === '-') {
        createDebug.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));
      } else {
        createDebug.names.push(new RegExp('^' + namespaces + '$'));
      }
    }

    for (i = 0; i < createDebug.instances.length; i++) {
      var instance = createDebug.instances[i];
      instance.enabled = createDebug.enabled(instance.namespace);
    }
  }
  /**
  * Disable debug output.
  *
  * @api public
  */


  function disable() {
    createDebug.enable('');
  }
  /**
  * Returns true if the given mode name is enabled, false otherwise.
  *
  * @param {String} name
  * @return {Boolean}
  * @api public
  */


  function enabled(name) {
    if (name[name.length - 1] === '*') {
      return true;
    }

    var i;
    var len;

    for (i = 0, len = createDebug.skips.length; i < len; i++) {
      if (createDebug.skips[i].test(name)) {
        return false;
      }
    }

    for (i = 0, len = createDebug.names.length; i < len; i++) {
      if (createDebug.names[i].test(name)) {
        return true;
      }
    }

    return false;
  }
  /**
  * Coerce `val`.
  *
  * @param {Mixed} val
  * @return {Mixed}
  * @api private
  */


  function coerce(val) {
    if (val instanceof Error) {
      return val.stack || val.message;
    }

    return val;
  }

  createDebug.enable(createDebug.load());
  return createDebug;
}

module.exports = setup;


},{"ms":60}],47:[function(require,module,exports){
'use strict';

var keys = require('object-keys');
var hasSymbols = typeof Symbol === 'function' && typeof Symbol('foo') === 'symbol';

var toStr = Object.prototype.toString;
var concat = Array.prototype.concat;
var origDefineProperty = Object.defineProperty;

var isFunction = function (fn) {
	return typeof fn === 'function' && toStr.call(fn) === '[object Function]';
};

var arePropertyDescriptorsSupported = function () {
	var obj = {};
	try {
		origDefineProperty(obj, 'x', { enumerable: false, value: obj });
		// eslint-disable-next-line no-unused-vars, no-restricted-syntax
		for (var _ in obj) { // jscs:ignore disallowUnusedVariables
			return false;
		}
		return obj.x === obj;
	} catch (e) { /* this is IE 8. */
		return false;
	}
};
var supportsDescriptors = origDefineProperty && arePropertyDescriptorsSupported();

var defineProperty = function (object, name, value, predicate) {
	if (name in object && (!isFunction(predicate) || !predicate())) {
		return;
	}
	if (supportsDescriptors) {
		origDefineProperty(object, name, {
			configurable: true,
			enumerable: false,
			value: value,
			writable: true
		});
	} else {
		object[name] = value;
	}
};

var defineProperties = function (object, map) {
	var predicates = arguments.length > 2 ? arguments[2] : {};
	var props = keys(map);
	if (hasSymbols) {
		props = concat.call(props, Object.getOwnPropertySymbols(map));
	}
	for (var i = 0; i < props.length; i += 1) {
		defineProperty(object, props[i], map[props[i]], predicates[props[i]]);
	}
};

defineProperties.supportsDescriptors = !!supportsDescriptors;

module.exports = defineProperties;

},{"object-keys":62}],48:[function(require,module,exports){
/*!

 diff v3.5.0

Software License Agreement (BSD License)

Copyright (c) 2009-2015, Kevin Decker <kpdecker@gmail.com>

All rights reserved.

Redistribution and use of this software in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above
  copyright notice, this list of conditions and the
  following disclaimer.

* Redistributions in binary form must reproduce the above
  copyright notice, this list of conditions and the
  following disclaimer in the documentation and/or other
  materials provided with the distribution.

* Neither the name of Kevin Decker nor the names of its
  contributors may be used to endorse or promote products
  derived from this software without specific prior
  written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
@license
*/
(function webpackUniversalModuleDefinition(root, factory) {
	if(typeof exports === 'object' && typeof module === 'object')
		module.exports = factory();
	else if(false)
		define([], factory);
	else if(typeof exports === 'object')
		exports["JsDiff"] = factory();
	else
		root["JsDiff"] = factory();
})(this, function() {
return /******/ (function(modules) { // webpackBootstrap
/******/ 	// The module cache
/******/ 	var installedModules = {};

/******/ 	// The require function
/******/ 	function __webpack_require__(moduleId) {

/******/ 		// Check if module is in cache
/******/ 		if(installedModules[moduleId])
/******/ 			return installedModules[moduleId].exports;

/******/ 		// Create a new module (and put it into the cache)
/******/ 		var module = installedModules[moduleId] = {
/******/ 			exports: {},
/******/ 			id: moduleId,
/******/ 			loaded: false
/******/ 		};

/******/ 		// Execute the module function
/******/ 		modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);

/******/ 		// Flag the module as loaded
/******/ 		module.loaded = true;

/******/ 		// Return the exports of the module
/******/ 		return module.exports;
/******/ 	}


/******/ 	// expose the modules object (__webpack_modules__)
/******/ 	__webpack_require__.m = modules;

/******/ 	// expose the module cache
/******/ 	__webpack_require__.c = installedModules;

/******/ 	// __webpack_public_path__
/******/ 	__webpack_require__.p = "";

/******/ 	// Load entry module and return exports
/******/ 	return __webpack_require__(0);
/******/ })
/************************************************************************/
/******/ ([
/* 0 */
/***/ (function(module, exports, __webpack_require__) {

	/*istanbul ignore start*/'use strict';

	exports.__esModule = true;
	exports.canonicalize = exports.convertChangesToXML = exports.convertChangesToDMP = exports.merge = exports.parsePatch = exports.applyPatches = exports.applyPatch = exports.createPatch = exports.createTwoFilesPatch = exports.structuredPatch = exports.diffArrays = exports.diffJson = exports.diffCss = exports.diffSentences = exports.diffTrimmedLines = exports.diffLines = exports.diffWordsWithSpace = exports.diffWords = exports.diffChars = exports.Diff = undefined;

	/*istanbul ignore end*/var /*istanbul ignore start*/_base = __webpack_require__(1) /*istanbul ignore end*/;

	/*istanbul ignore start*/var _base2 = _interopRequireDefault(_base);

	/*istanbul ignore end*/var /*istanbul ignore start*/_character = __webpack_require__(2) /*istanbul ignore end*/;

	var /*istanbul ignore start*/_word = __webpack_require__(3) /*istanbul ignore end*/;

	var /*istanbul ignore start*/_line = __webpack_require__(5) /*istanbul ignore end*/;

	var /*istanbul ignore start*/_sentence = __webpack_require__(6) /*istanbul ignore end*/;

	var /*istanbul ignore start*/_css = __webpack_require__(7) /*istanbul ignore end*/;

	var /*istanbul ignore start*/_json = __webpack_require__(8) /*istanbul ignore end*/;

	var /*istanbul ignore start*/_array = __webpack_require__(9) /*istanbul ignore end*/;

	var /*istanbul ignore start*/_apply = __webpack_require__(10) /*istanbul ignore end*/;

	var /*istanbul ignore start*/_parse = __webpack_require__(11) /*istanbul ignore end*/;

	var /*istanbul ignore start*/_merge = __webpack_require__(13) /*istanbul ignore end*/;

	var /*istanbul ignore start*/_create = __webpack_require__(14) /*istanbul ignore end*/;

	var /*istanbul ignore start*/_dmp = __webpack_require__(16) /*istanbul ignore end*/;

	var /*istanbul ignore start*/_xml = __webpack_require__(17) /*istanbul ignore end*/;

	/*istanbul ignore start*/function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

	/* 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
	 */
	exports. /*istanbul ignore end*/Diff = _base2['default'];
	/*istanbul ignore start*/exports. /*istanbul ignore end*/diffChars = _character.diffChars;
	/*istanbul ignore start*/exports. /*istanbul ignore end*/diffWords = _word.diffWords;
	/*istanbul ignore start*/exports. /*istanbul ignore end*/diffWordsWithSpace = _word.diffWordsWithSpace;
	/*istanbul ignore start*/exports. /*istanbul ignore end*/diffLines = _line.diffLines;
	/*istanbul ignore start*/exports. /*istanbul ignore end*/diffTrimmedLines = _line.diffTrimmedLines;
	/*istanbul ignore start*/exports. /*istanbul ignore end*/diffSentences = _sentence.diffSentences;
	/*istanbul ignore start*/exports. /*istanbul ignore end*/diffCss = _css.diffCss;
	/*istanbul ignore start*/exports. /*istanbul ignore end*/diffJson = _json.diffJson;
	/*istanbul ignore start*/exports. /*istanbul ignore end*/diffArrays = _array.diffArrays;
	/*istanbul ignore start*/exports. /*istanbul ignore end*/structuredPatch = _create.structuredPatch;
	/*istanbul ignore start*/exports. /*istanbul ignore end*/createTwoFilesPatch = _create.createTwoFilesPatch;
	/*istanbul ignore start*/exports. /*istanbul ignore end*/createPatch = _create.createPatch;
	/*istanbul ignore start*/exports. /*istanbul ignore end*/applyPatch = _apply.applyPatch;
	/*istanbul ignore start*/exports. /*istanbul ignore end*/applyPatches = _apply.applyPatches;
	/*istanbul ignore start*/exports. /*istanbul ignore end*/parsePatch = _parse.parsePatch;
	/*istanbul ignore start*/exports. /*istanbul ignore end*/merge = _merge.merge;
	/*istanbul ignore start*/exports. /*istanbul ignore end*/convertChangesToDMP = _dmp.convertChangesToDMP;
	/*istanbul ignore start*/exports. /*istanbul ignore end*/convertChangesToXML = _xml.convertChangesToXML;
	/*istanbul ignore start*/exports. /*istanbul ignore end*/canonicalize = _json.canonicalize;



/***/ }),
/* 1 */
/***/ (function(module, exports) {

	/*istanbul ignore start*/'use strict';

	exports.__esModule = true;
	exports['default'] = /*istanbul ignore end*/Diff;
	function Diff() {}

	Diff.prototype = {
	  /*istanbul ignore start*/ /*istanbul ignore end*/diff: function diff(oldString, newString) {
	    /*istanbul ignore start*/var /*istanbul ignore end*/options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};

	    var callback = options.callback;
	    if (typeof options === 'function') {
	      callback = options;
	      options = {};
	    }
	    this.options = options;

	    var self = this;

	    function done(value) {
	      if (callback) {
	        setTimeout(function () {
	          callback(undefined, value);
	        }, 0);
	        return true;
	      } else {
	        return value;
	      }
	    }

	    // Allow subclasses to massage the input prior to running
	    oldString = this.castInput(oldString);
	    newString = this.castInput(newString);

	    oldString = this.removeEmpty(this.tokenize(oldString));
	    newString = this.removeEmpty(this.tokenize(newString));

	    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: this.join(newString), count: newString.length }]);
	    }

	    // 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 = /*istanbul ignore start*/void 0 /*istanbul ignore end*/;
	        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(self, 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;
	        }
	      }
	    }
	  },
	  /*istanbul ignore start*/ /*istanbul ignore end*/pushComponent: function pushComponent(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 });
	    }
	  },
	  /*istanbul ignore start*/ /*istanbul ignore end*/extractCommon: function extractCommon(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;
	  },
	  /*istanbul ignore start*/ /*istanbul ignore end*/equals: function equals(left, right) {
	    if (this.options.comparator) {
	      return this.options.comparator(left, right);
	    } else {
	      return left === right || this.options.ignoreCase && left.toLowerCase() === right.toLowerCase();
	    }
	  },
	  /*istanbul ignore start*/ /*istanbul ignore end*/removeEmpty: function removeEmpty(array) {
	    var ret = [];
	    for (var i = 0; i < array.length; i++) {
	      if (array[i]) {
	        ret.push(array[i]);
	      }
	    }
	    return ret;
	  },
	  /*istanbul ignore start*/ /*istanbul ignore end*/castInput: function castInput(value) {
	    return value;
	  },
	  /*istanbul ignore start*/ /*istanbul ignore end*/tokenize: function tokenize(value) {
	    return value.split('');
	  },
	  /*istanbul ignore start*/ /*istanbul ignore end*/join: function join(chars) {
	    return chars.join('');
	  }
	};

	function buildValues(diff, 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 = value.map(function (value, i) {
	          var oldValue = oldString[oldPos + i];
	          return oldValue.length > value.length ? oldValue : value;
	        });

	        component.value = diff.join(value);
	      } else {
	        component.value = diff.join(newString.slice(newPos, newPos + component.count));
	      }
	      newPos += component.count;

	      // Common case
	      if (!component.added) {
	        oldPos += component.count;
	      }
	    } else {
	      component.value = diff.join(oldString.slice(oldPos, oldPos + component.count));
	      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;
	      }
	    }
	  }

	  // Special case handle for when one terminal is ignored (i.e. whitespace).
	  // For this case we merge the terminal into the prior string and drop the change.
	  // This is only available for string mode.
	  var lastComponent = components[componentLen - 1];
	  if (componentLen > 1 && typeof lastComponent.value === 'string' && (lastComponent.added || lastComponent.removed) && diff.equals('', lastComponent.value)) {
	    components[componentLen - 2].value += lastComponent.value;
	    components.pop();
	  }

	  return components;
	}

	function clonePath(path) {
	  return { newPos: path.newPos, components: path.components.slice(0) };
	}



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

	/*istanbul ignore start*/'use strict';

	exports.__esModule = true;
	exports.characterDiff = undefined;
	exports. /*istanbul ignore end*/diffChars = diffChars;

	var /*istanbul ignore start*/_base = __webpack_require__(1) /*istanbul ignore end*/;

	/*istanbul ignore start*/var _base2 = _interopRequireDefault(_base);

	function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

	/*istanbul ignore end*/var characterDiff = /*istanbul ignore start*/exports. /*istanbul ignore end*/characterDiff = new /*istanbul ignore start*/_base2['default'] /*istanbul ignore end*/();
	function diffChars(oldStr, newStr, options) {
	  return characterDiff.diff(oldStr, newStr, options);
	}



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

	/*istanbul ignore start*/'use strict';

	exports.__esModule = true;
	exports.wordDiff = undefined;
	exports. /*istanbul ignore end*/diffWords = diffWords;
	/*istanbul ignore start*/exports. /*istanbul ignore end*/diffWordsWithSpace = diffWordsWithSpace;

	var /*istanbul ignore start*/_base = __webpack_require__(1) /*istanbul ignore end*/;

	/*istanbul ignore start*/var _base2 = _interopRequireDefault(_base);

	/*istanbul ignore end*/var /*istanbul ignore start*/_params = __webpack_require__(4) /*istanbul ignore end*/;

	/*istanbul ignore start*/function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

	/*istanbul ignore end*/ // Based on https://en.wikipedia.org/wiki/Latin_script_in_Unicode
	//
	// Ranges and exceptions:
	// Latin-1 Supplement, 0080–00FF
	//  - U+00D7  × Multiplication sign
	//  - U+00F7  ÷ Division sign
	// Latin Extended-A, 0100–017F
	// Latin Extended-B, 0180–024F
	// IPA Extensions, 0250–02AF
	// Spacing Modifier Letters, 02B0–02FF
	//  - U+02C7  ˇ &#711;  Caron
	//  - U+02D8  ˘ &#728;  Breve
	//  - U+02D9  ˙ &#729;  Dot Above
	//  - U+02DA  ˚ &#730;  Ring Above
	//  - U+02DB  ˛ &#731;  Ogonek
	//  - U+02DC  ˜ &#732;  Small Tilde
	//  - U+02DD  ˝ &#733;  Double Acute Accent
	// Latin Extended Additional, 1E00–1EFF
	var extendedWordChars = /^[A-Za-z\xC0-\u02C6\u02C8-\u02D7\u02DE-\u02FF\u1E00-\u1EFF]+$/;

	var reWhitespace = /\S/;

	var wordDiff = /*istanbul ignore start*/exports. /*istanbul ignore end*/wordDiff = new /*istanbul ignore start*/_base2['default'] /*istanbul ignore end*/();
	wordDiff.equals = function (left, right) {
	  if (this.options.ignoreCase) {
	    left = left.toLowerCase();
	    right = right.toLowerCase();
	  }
	  return left === right || this.options.ignoreWhitespace && !reWhitespace.test(left) && !reWhitespace.test(right);
	};
	wordDiff.tokenize = function (value) {
	  var tokens = value.split(/(\s+|\b)/);

	  // Join the boundary splits that we do not consider to be boundaries. This is primarily the extended Latin character set.
	  for (var i = 0; i < tokens.length - 1; i++) {
	    // If we have an empty string in the next field and we have only word chars before and after, merge
	    if (!tokens[i + 1] && tokens[i + 2] && extendedWordChars.test(tokens[i]) && extendedWordChars.test(tokens[i + 2])) {
	      tokens[i] += tokens[i + 2];
	      tokens.splice(i + 1, 2);
	      i--;
	    }
	  }

	  return tokens;
	};

	function diffWords(oldStr, newStr, options) {
	  options = /*istanbul ignore start*/(0, _params.generateOptions) /*istanbul ignore end*/(options, { ignoreWhitespace: true });
	  return wordDiff.diff(oldStr, newStr, options);
	}

	function diffWordsWithSpace(oldStr, newStr, options) {
	  return wordDiff.diff(oldStr, newStr, options);
	}



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

	/*istanbul ignore start*/'use strict';

	exports.__esModule = true;
	exports. /*istanbul ignore end*/generateOptions = generateOptions;
	function generateOptions(options, defaults) {
	  if (typeof options === 'function') {
	    defaults.callback = options;
	  } else if (options) {
	    for (var name in options) {
	      /* istanbul ignore else */
	      if (options.hasOwnProperty(name)) {
	        defaults[name] = options[name];
	      }
	    }
	  }
	  return defaults;
	}



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

	/*istanbul ignore start*/'use strict';

	exports.__esModule = true;
	exports.lineDiff = undefined;
	exports. /*istanbul ignore end*/diffLines = diffLines;
	/*istanbul ignore start*/exports. /*istanbul ignore end*/diffTrimmedLines = diffTrimmedLines;

	var /*istanbul ignore start*/_base = __webpack_require__(1) /*istanbul ignore end*/;

	/*istanbul ignore start*/var _base2 = _interopRequireDefault(_base);

	/*istanbul ignore end*/var /*istanbul ignore start*/_params = __webpack_require__(4) /*istanbul ignore end*/;

	/*istanbul ignore start*/function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

	/*istanbul ignore end*/var lineDiff = /*istanbul ignore start*/exports. /*istanbul ignore end*/lineDiff = new /*istanbul ignore start*/_base2['default'] /*istanbul ignore end*/();
	lineDiff.tokenize = function (value) {
	  var retLines = [],
	      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 && !this.options.newlineIsToken) {
	      retLines[retLines.length - 1] += line;
	    } else {
	      if (this.options.ignoreWhitespace) {
	        line = line.trim();
	      }
	      retLines.push(line);
	    }
	  }

	  return retLines;
	};

	function diffLines(oldStr, newStr, callback) {
	  return lineDiff.diff(oldStr, newStr, callback);
	}
	function diffTrimmedLines(oldStr, newStr, callback) {
	  var options = /*istanbul ignore start*/(0, _params.generateOptions) /*istanbul ignore end*/(callback, { ignoreWhitespace: true });
	  return lineDiff.diff(oldStr, newStr, options);
	}



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

	/*istanbul ignore start*/'use strict';

	exports.__esModule = true;
	exports.sentenceDiff = undefined;
	exports. /*istanbul ignore end*/diffSentences = diffSentences;

	var /*istanbul ignore start*/_base = __webpack_require__(1) /*istanbul ignore end*/;

	/*istanbul ignore start*/var _base2 = _interopRequireDefault(_base);

	function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

	/*istanbul ignore end*/var sentenceDiff = /*istanbul ignore start*/exports. /*istanbul ignore end*/sentenceDiff = new /*istanbul ignore start*/_base2['default'] /*istanbul ignore end*/();
	sentenceDiff.tokenize = function (value) {
	  return value.split(/(\S.+?[.!?])(?=\s+|$)/);
	};

	function diffSentences(oldStr, newStr, callback) {
	  return sentenceDiff.diff(oldStr, newStr, callback);
	}



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

	/*istanbul ignore start*/'use strict';

	exports.__esModule = true;
	exports.cssDiff = undefined;
	exports. /*istanbul ignore end*/diffCss = diffCss;

	var /*istanbul ignore start*/_base = __webpack_require__(1) /*istanbul ignore end*/;

	/*istanbul ignore start*/var _base2 = _interopRequireDefault(_base);

	function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

	/*istanbul ignore end*/var cssDiff = /*istanbul ignore start*/exports. /*istanbul ignore end*/cssDiff = new /*istanbul ignore start*/_base2['default'] /*istanbul ignore end*/();
	cssDiff.tokenize = function (value) {
	  return value.split(/([{}:;,]|\s+)/);
	};

	function diffCss(oldStr, newStr, callback) {
	  return cssDiff.diff(oldStr, newStr, callback);
	}



/***/ }),
/* 8 */
/***/ (function(module, exports, __webpack_require__) {

	/*istanbul ignore start*/'use strict';

	exports.__esModule = true;
	exports.jsonDiff = undefined;

	var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };

	exports. /*istanbul ignore end*/diffJson = diffJson;
	/*istanbul ignore start*/exports. /*istanbul ignore end*/canonicalize = canonicalize;

	var /*istanbul ignore start*/_base = __webpack_require__(1) /*istanbul ignore end*/;

	/*istanbul ignore start*/var _base2 = _interopRequireDefault(_base);

	/*istanbul ignore end*/var /*istanbul ignore start*/_line = __webpack_require__(5) /*istanbul ignore end*/;

	/*istanbul ignore start*/function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

	/*istanbul ignore end*/var objectPrototypeToString = Object.prototype.toString;

	var jsonDiff = /*istanbul ignore start*/exports. /*istanbul ignore end*/jsonDiff = new /*istanbul ignore start*/_base2['default'] /*istanbul ignore end*/();
	// 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 = /*istanbul ignore start*/_line.lineDiff /*istanbul ignore end*/.tokenize;
	jsonDiff.castInput = function (value) {
	  /*istanbul ignore start*/var _options = /*istanbul ignore end*/this.options,
	      undefinedReplacement = _options.undefinedReplacement,
	      _options$stringifyRep = _options.stringifyReplacer,
	      stringifyReplacer = _options$stringifyRep === undefined ? function (k, v) /*istanbul ignore start*/{
	    return (/*istanbul ignore end*/typeof v === 'undefined' ? undefinedReplacement : v
	    );
	  } : _options$stringifyRep;


	  return typeof value === 'string' ? value : JSON.stringify(canonicalize(value, null, null, stringifyReplacer), stringifyReplacer, '  ');
	};
	jsonDiff.equals = function (left, right) {
	  return (/*istanbul ignore start*/_base2['default'] /*istanbul ignore end*/.prototype.equals.call(jsonDiff, left.replace(/,([\r\n])/g, '$1'), right.replace(/,([\r\n])/g, '$1'))
	  );
	};

	function diffJson(oldObj, newObj, options) {
	  return jsonDiff.diff(oldObj, newObj, options);
	}

	// 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. Accepts an optional replacer
	function canonicalize(obj, stack, replacementStack, replacer, key) {
	  stack = stack || [];
	  replacementStack = replacementStack || [];

	  if (replacer) {
	    obj = replacer(key, obj);
	  }

	  var i = /*istanbul ignore start*/void 0 /*istanbul ignore end*/;

	  for (i = 0; i < stack.length; i += 1) {
	    if (stack[i] === obj) {
	      return replacementStack[i];
	    }
	  }

	  var canonicalizedObj = /*istanbul ignore start*/void 0 /*istanbul ignore end*/;

	  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, replacer, key);
	    }
	    stack.pop();
	    replacementStack.pop();
	    return canonicalizedObj;
	  }

	  if (obj && obj.toJSON) {
	    obj = obj.toJSON();
	  }

	  if ( /*istanbul ignore start*/(typeof /*istanbul ignore end*/obj === 'undefined' ? 'undefined' : _typeof(obj)) === 'object' && obj !== null) {
	    stack.push(obj);
	    canonicalizedObj = {};
	    replacementStack.push(canonicalizedObj);
	    var sortedKeys = [],
	        _key = /*istanbul ignore start*/void 0 /*istanbul ignore end*/;
	    for (_key in obj) {
	      /* istanbul ignore else */
	      if (obj.hasOwnProperty(_key)) {
	        sortedKeys.push(_key);
	      }
	    }
	    sortedKeys.sort();
	    for (i = 0; i < sortedKeys.length; i += 1) {
	      _key = sortedKeys[i];
	      canonicalizedObj[_key] = canonicalize(obj[_key], stack, replacementStack, replacer, _key);
	    }
	    stack.pop();
	    replacementStack.pop();
	  } else {
	    canonicalizedObj = obj;
	  }
	  return canonicalizedObj;
	}



/***/ }),
/* 9 */
/***/ (function(module, exports, __webpack_require__) {

	/*istanbul ignore start*/'use strict';

	exports.__esModule = true;
	exports.arrayDiff = undefined;
	exports. /*istanbul ignore end*/diffArrays = diffArrays;

	var /*istanbul ignore start*/_base = __webpack_require__(1) /*istanbul ignore end*/;

	/*istanbul ignore start*/var _base2 = _interopRequireDefault(_base);

	function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

	/*istanbul ignore end*/var arrayDiff = /*istanbul ignore start*/exports. /*istanbul ignore end*/arrayDiff = new /*istanbul ignore start*/_base2['default'] /*istanbul ignore end*/();
	arrayDiff.tokenize = function (value) {
	  return value.slice();
	};
	arrayDiff.join = arrayDiff.removeEmpty = function (value) {
	  return value;
	};

	function diffArrays(oldArr, newArr, callback) {
	  return arrayDiff.diff(oldArr, newArr, callback);
	}



/***/ }),
/* 10 */
/***/ (function(module, exports, __webpack_require__) {

	/*istanbul ignore start*/'use strict';

	exports.__esModule = true;
	exports. /*istanbul ignore end*/applyPatch = applyPatch;
	/*istanbul ignore start*/exports. /*istanbul ignore end*/applyPatches = applyPatches;

	var /*istanbul ignore start*/_parse = __webpack_require__(11) /*istanbul ignore end*/;

	var /*istanbul ignore start*/_distanceIterator = __webpack_require__(12) /*istanbul ignore end*/;

	/*istanbul ignore start*/var _distanceIterator2 = _interopRequireDefault(_distanceIterator);

	function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }

	/*istanbul ignore end*/function applyPatch(source, uniDiff) {
	  /*istanbul ignore start*/var /*istanbul ignore end*/options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};

	  if (typeof uniDiff === 'string') {
	    uniDiff = /*istanbul ignore start*/(0, _parse.parsePatch) /*istanbul ignore end*/(uniDiff);
	  }

	  if (Array.isArray(uniDiff)) {
	    if (uniDiff.length > 1) {
	      throw new Error('applyPatch only works with a single input.');
	    }

	    uniDiff = uniDiff[0];
	  }

	  // Apply the diff to the input
	  var lines = source.split(/\r\n|[\n\v\f\r\x85]/),
	      delimiters = source.match(/\r\n|[\n\v\f\r\x85]/g) || [],
	      hunks = uniDiff.hunks,
	      compareLine = options.compareLine || function (lineNumber, line, operation, patchContent) /*istanbul ignore start*/{
	    return (/*istanbul ignore end*/line === patchContent
	    );
	  },
	      errorCount = 0,
	      fuzzFactor = options.fuzzFactor || 0,
	      minLine = 0,
	      offset = 0,
	      removeEOFNL = /*istanbul ignore start*/void 0 /*istanbul ignore end*/,
	      addEOFNL = /*istanbul ignore start*/void 0 /*istanbul ignore end*/;

	  /**
	   * Checks if the hunk exactly fits on the provided location
	   */
	  function hunkFits(hunk, toPos) {
	    for (var j = 0; j < hunk.lines.length; j++) {
	      var line = hunk.lines[j],
	          operation = line.length > 0 ? line[0] : ' ',
	          content = line.length > 0 ? line.substr(1) : line;

	      if (operation === ' ' || operation === '-') {
	        // Context sanity check
	        if (!compareLine(toPos + 1, lines[toPos], operation, content)) {
	          errorCount++;

	          if (errorCount > fuzzFactor) {
	            return false;
	          }
	        }
	        toPos++;
	      }
	    }

	    return true;
	  }

	  // Search best fit offsets for each hunk based on the previous ones
	  for (var i = 0; i < hunks.length; i++) {
	    var hunk = hunks[i],
	        maxLine = lines.length - hunk.oldLines,
	        localOffset = 0,
	        toPos = offset + hunk.oldStart - 1;

	    var iterator = /*istanbul ignore start*/(0, _distanceIterator2['default']) /*istanbul ignore end*/(toPos, minLine, maxLine);

	    for (; localOffset !== undefined; localOffset = iterator()) {
	      if (hunkFits(hunk, toPos + localOffset)) {
	        hunk.offset = offset += localOffset;
	        break;
	      }
	    }

	    if (localOffset === undefined) {
	      return false;
	    }

	    // Set lower text limit to end of the current hunk, so next ones don't try
	    // to fit over already patched text
	    minLine = hunk.offset + hunk.oldStart + hunk.oldLines;
	  }

	  // Apply patch hunks
	  var diffOffset = 0;
	  for (var _i = 0; _i < hunks.length; _i++) {
	    var _hunk = hunks[_i],
	        _toPos = _hunk.oldStart + _hunk.offset + diffOffset - 1;
	    diffOffset += _hunk.newLines - _hunk.oldLines;

	    if (_toPos < 0) {
	      // Creating a new file
	      _toPos = 0;
	    }

	    for (var j = 0; j < _hunk.lines.length; j++) {
	      var line = _hunk.lines[j],
	          operation = line.length > 0 ? line[0] : ' ',
	          content = line.length > 0 ? line.substr(1) : line,
	          delimiter = _hunk.linedelimiters[j];

	      if (operation === ' ') {
	        _toPos++;
	      } else if (operation === '-') {
	        lines.splice(_toPos, 1);
	        delimiters.splice(_toPos, 1);
	        /* istanbul ignore else */
	      } else if (operation === '+') {
	        lines.splice(_toPos, 0, content);
	        delimiters.splice(_toPos, 0, delimiter);
	        _toPos++;
	      } else if (operation === '\\') {
	        var previousOperation = _hunk.lines[j - 1] ? _hunk.lines[j - 1][0] : null;
	        if (previousOperation === '+') {
	          removeEOFNL = true;
	        } else if (previousOperation === '-') {
	          addEOFNL = true;
	        }
	      }
	    }
	  }

	  // Handle EOFNL insertion/removal
	  if (removeEOFNL) {
	    while (!lines[lines.length - 1]) {
	      lines.pop();
	      delimiters.pop();
	    }
	  } else if (addEOFNL) {
	    lines.push('');
	    delimiters.push('\n');
	  }
	  for (var _k = 0; _k < lines.length - 1; _k++) {
	    lines[_k] = lines[_k] + delimiters[_k];
	  }
	  return lines.join('');
	}

	// Wrapper that supports multiple file patches via callbacks.
	function applyPatches(uniDiff, options) {
	  if (typeof uniDiff === 'string') {
	    uniDiff = /*istanbul ignore start*/(0, _parse.parsePatch) /*istanbul ignore end*/(uniDiff);
	  }

	  var currentIndex = 0;
	  function processIndex() {
	    var index = uniDiff[currentIndex++];
	    if (!index) {
	      return options.complete();
	    }

	    options.loadFile(index, function (err, data) {
	      if (err) {
	        return options.complete(err);
	      }

	      var updatedContent = applyPatch(data, index, options);
	      options.patched(index, updatedContent, function (err) {
	        if (err) {
	          return options.complete(err);
	        }

	        processIndex();
	      });
	    });
	  }
	  processIndex();
	}



/***/ }),
/* 11 */
/***/ (function(module, exports) {

	/*istanbul ignore start*/'use strict';

	exports.__esModule = true;
	exports. /*istanbul ignore end*/parsePatch = parsePatch;
	function parsePatch(uniDiff) {
	  /*istanbul ignore start*/var /*istanbul ignore end*/options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

	  var diffstr = uniDiff.split(/\r\n|[\n\v\f\r\x85]/),
	      delimiters = uniDiff.match(/\r\n|[\n\v\f\r\x85]/g) || [],
	      list = [],
	      i = 0;

	  function parseIndex() {
	    var index = {};
	    list.push(index);

	    // Parse diff metadata
	    while (i < diffstr.length) {
	      var line = diffstr[i];

	      // File header found, end parsing diff metadata
	      if (/^(\-\-\-|\+\+\+|@@)\s/.test(line)) {
	        break;
	      }

	      // Diff index
	      var header = /^(?:Index:|diff(?: -r \w+)+)\s+(.+?)\s*$/.exec(line);
	      if (header) {
	        index.index = header[1];
	      }

	      i++;
	    }

	    // Parse file headers if they are defined. Unified diff requires them, but
	    // there's no technical issues to have an isolated hunk without file header
	    parseFileHeader(index);
	    parseFileHeader(index);

	    // Parse hunks
	    index.hunks = [];

	    while (i < diffstr.length) {
	      var _line = diffstr[i];

	      if (/^(Index:|diff|\-\-\-|\+\+\+)\s/.test(_line)) {
	        break;
	      } else if (/^@@/.test(_line)) {
	        index.hunks.push(parseHunk());
	      } else if (_line && options.strict) {
	        // Ignore unexpected content unless in strict mode
	        throw new Error('Unknown line ' + (i + 1) + ' ' + JSON.stringify(_line));
	      } else {
	        i++;
	      }
	    }
	  }

	  // Parses the --- and +++ headers, if none are found, no lines
	  // are consumed.
	  function parseFileHeader(index) {
	    var fileHeader = /^(---|\+\+\+)\s+(.*)$/.exec(diffstr[i]);
	    if (fileHeader) {
	      var keyPrefix = fileHeader[1] === '---' ? 'old' : 'new';
	      var data = fileHeader[2].split('\t', 2);
	      var fileName = data[0].replace(/\\\\/g, '\\');
	      if (/^".*"$/.test(fileName)) {
	        fileName = fileName.substr(1, fileName.length - 2);
	      }
	      index[keyPrefix + 'FileName'] = fileName;
	      index[keyPrefix + 'Header'] = (data[1] || '').trim();

	      i++;
	    }
	  }

	  // Parses a hunk
	  // This assumes that we are at the start of a hunk.
	  function parseHunk() {
	    var chunkHeaderIndex = i,
	        chunkHeaderLine = diffstr[i++],
	        chunkHeader = chunkHeaderLine.split(/@@ -(\d+)(?:,(\d+))? \+(\d+)(?:,(\d+))? @@/);

	    var hunk = {
	      oldStart: +chunkHeader[1],
	      oldLines: +chunkHeader[2] || 1,
	      newStart: +chunkHeader[3],
	      newLines: +chunkHeader[4] || 1,
	      lines: [],
	      linedelimiters: []
	    };

	    var addCount = 0,
	        removeCount = 0;
	    for (; i < diffstr.length; i++) {
	      // Lines starting with '---' could be mistaken for the "remove line" operation
	      // But they could be the header for the next file. Therefore prune such cases out.
	      if (diffstr[i].indexOf('--- ') === 0 && i + 2 < diffstr.length && diffstr[i + 1].indexOf('+++ ') === 0 && diffstr[i + 2].indexOf('@@') === 0) {
	        break;
	      }
	      var operation = diffstr[i].length == 0 && i != diffstr.length - 1 ? ' ' : diffstr[i][0];

	      if (operation === '+' || operation === '-' || operation === ' ' || operation === '\\') {
	        hunk.lines.push(diffstr[i]);
	        hunk.linedelimiters.push(delimiters[i] || '\n');

	        if (operation === '+') {
	          addCount++;
	        } else if (operation === '-') {
	          removeCount++;
	        } else if (operation === ' ') {
	          addCount++;
	          removeCount++;
	        }
	      } else {
	        break;
	      }
	    }

	    // Handle the empty block count case
	    if (!addCount && hunk.newLines === 1) {
	      hunk.newLines = 0;
	    }
	    if (!removeCount && hunk.oldLines === 1) {
	      hunk.oldLines = 0;
	    }

	    // Perform optional sanity checking
	    if (options.strict) {
	      if (addCount !== hunk.newLines) {
	        throw new Error('Added line count did not match for hunk at line ' + (chunkHeaderIndex + 1));
	      }
	      if (removeCount !== hunk.oldLines) {
	        throw new Error('Removed line count did not match for hunk at line ' + (chunkHeaderIndex + 1));
	      }
	    }

	    return hunk;
	  }

	  while (i < diffstr.length) {
	    parseIndex();
	  }

	  return list;
	}



/***/ }),
/* 12 */
/***/ (function(module, exports) {

	/*istanbul ignore start*/"use strict";

	exports.__esModule = true;

	exports["default"] = /*istanbul ignore end*/function (start, minLine, maxLine) {
	  var wantForward = true,
	      backwardExhausted = false,
	      forwardExhausted = false,
	      localOffset = 1;

	  return function iterator() {
	    if (wantForward && !forwardExhausted) {
	      if (backwardExhausted) {
	        localOffset++;
	      } else {
	        wantForward = false;
	      }

	      // Check if trying to fit beyond text length, and if not, check it fits
	      // after offset location (or desired location on first iteration)
	      if (start + localOffset <= maxLine) {
	        return localOffset;
	      }

	      forwardExhausted = true;
	    }

	    if (!backwardExhausted) {
	      if (!forwardExhausted) {
	        wantForward = true;
	      }

	      // Check if trying to fit before text beginning, and if not, check it fits
	      // before offset location
	      if (minLine <= start - localOffset) {
	        return -localOffset++;
	      }

	      backwardExhausted = true;
	      return iterator();
	    }

	    // We tried to fit hunk before text beginning and beyond text length, then
	    // hunk can't fit on the text. Return undefined
	  };
	};



/***/ }),
/* 13 */
/***/ (function(module, exports, __webpack_require__) {

	/*istanbul ignore start*/'use strict';

	exports.__esModule = true;
	exports. /*istanbul ignore end*/calcLineCount = calcLineCount;
	/*istanbul ignore start*/exports. /*istanbul ignore end*/merge = merge;

	var /*istanbul ignore start*/_create = __webpack_require__(14) /*istanbul ignore end*/;

	var /*istanbul ignore start*/_parse = __webpack_require__(11) /*istanbul ignore end*/;

	var /*istanbul ignore start*/_array = __webpack_require__(15) /*istanbul ignore end*/;

	/*istanbul ignore start*/function _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }

	/*istanbul ignore end*/function calcLineCount(hunk) {
	  /*istanbul ignore start*/var _calcOldNewLineCount = /*istanbul ignore end*/calcOldNewLineCount(hunk.lines),
	      oldLines = _calcOldNewLineCount.oldLines,
	      newLines = _calcOldNewLineCount.newLines;

	  if (oldLines !== undefined) {
	    hunk.oldLines = oldLines;
	  } else {
	    delete hunk.oldLines;
	  }

	  if (newLines !== undefined) {
	    hunk.newLines = newLines;
	  } else {
	    delete hunk.newLines;
	  }
	}

	function merge(mine, theirs, base) {
	  mine = loadPatch(mine, base);
	  theirs = loadPatch(theirs, base);

	  var ret = {};

	  // For index we just let it pass through as it doesn't have any necessary meaning.
	  // Leaving sanity checks on this to the API consumer that may know more about the
	  // meaning in their own context.
	  if (mine.index || theirs.index) {
	    ret.index = mine.index || theirs.index;
	  }

	  if (mine.newFileName || theirs.newFileName) {
	    if (!fileNameChanged(mine)) {
	      // No header or no change in ours, use theirs (and ours if theirs does not exist)
	      ret.oldFileName = theirs.oldFileName || mine.oldFileName;
	      ret.newFileName = theirs.newFileName || mine.newFileName;
	      ret.oldHeader = theirs.oldHeader || mine.oldHeader;
	      ret.newHeader = theirs.newHeader || mine.newHeader;
	    } else if (!fileNameChanged(theirs)) {
	      // No header or no change in theirs, use ours
	      ret.oldFileName = mine.oldFileName;
	      ret.newFileName = mine.newFileName;
	      ret.oldHeader = mine.oldHeader;
	      ret.newHeader = mine.newHeader;
	    } else {
	      // Both changed... figure it out
	      ret.oldFileName = selectField(ret, mine.oldFileName, theirs.oldFileName);
	      ret.newFileName = selectField(ret, mine.newFileName, theirs.newFileName);
	      ret.oldHeader = selectField(ret, mine.oldHeader, theirs.oldHeader);
	      ret.newHeader = selectField(ret, mine.newHeader, theirs.newHeader);
	    }
	  }

	  ret.hunks = [];

	  var mineIndex = 0,
	      theirsIndex = 0,
	      mineOffset = 0,
	      theirsOffset = 0;

	  while (mineIndex < mine.hunks.length || theirsIndex < theirs.hunks.length) {
	    var mineCurrent = mine.hunks[mineIndex] || { oldStart: Infinity },
	        theirsCurrent = theirs.hunks[theirsIndex] || { oldStart: Infinity };

	    if (hunkBefore(mineCurrent, theirsCurrent)) {
	      // This patch does not overlap with any of the others, yay.
	      ret.hunks.push(cloneHunk(mineCurrent, mineOffset));
	      mineIndex++;
	      theirsOffset += mineCurrent.newLines - mineCurrent.oldLines;
	    } else if (hunkBefore(theirsCurrent, mineCurrent)) {
	      // This patch does not overlap with any of the others, yay.
	      ret.hunks.push(cloneHunk(theirsCurrent, theirsOffset));
	      theirsIndex++;
	      mineOffset += theirsCurrent.newLines - theirsCurrent.oldLines;
	    } else {
	      // Overlap, merge as best we can
	      var mergedHunk = {
	        oldStart: Math.min(mineCurrent.oldStart, theirsCurrent.oldStart),
	        oldLines: 0,
	        newStart: Math.min(mineCurrent.newStart + mineOffset, theirsCurrent.oldStart + theirsOffset),
	        newLines: 0,
	        lines: []
	      };
	      mergeLines(mergedHunk, mineCurrent.oldStart, mineCurrent.lines, theirsCurrent.oldStart, theirsCurrent.lines);
	      theirsIndex++;
	      mineIndex++;

	      ret.hunks.push(mergedHunk);
	    }
	  }

	  return ret;
	}

	function loadPatch(param, base) {
	  if (typeof param === 'string') {
	    if (/^@@/m.test(param) || /^Index:/m.test(param)) {
	      return (/*istanbul ignore start*/(0, _parse.parsePatch) /*istanbul ignore end*/(param)[0]
	      );
	    }

	    if (!base) {
	      throw new Error('Must provide a base reference or pass in a patch');
	    }
	    return (/*istanbul ignore start*/(0, _create.structuredPatch) /*istanbul ignore end*/(undefined, undefined, base, param)
	    );
	  }

	  return param;
	}

	function fileNameChanged(patch) {
	  return patch.newFileName && patch.newFileName !== patch.oldFileName;
	}

	function selectField(index, mine, theirs) {
	  if (mine === theirs) {
	    return mine;
	  } else {
	    index.conflict = true;
	    return { mine: mine, theirs: theirs };
	  }
	}

	function hunkBefore(test, check) {
	  return test.oldStart < check.oldStart && test.oldStart + test.oldLines < check.oldStart;
	}

	function cloneHunk(hunk, offset) {
	  return {
	    oldStart: hunk.oldStart, oldLines: hunk.oldLines,
	    newStart: hunk.newStart + offset, newLines: hunk.newLines,
	    lines: hunk.lines
	  };
	}

	function mergeLines(hunk, mineOffset, mineLines, theirOffset, theirLines) {
	  // This will generally result in a conflicted hunk, but there are cases where the context
	  // is the only overlap where we can successfully merge the content here.
	  var mine = { offset: mineOffset, lines: mineLines, index: 0 },
	      their = { offset: theirOffset, lines: theirLines, index: 0 };

	  // Handle any leading content
	  insertLeading(hunk, mine, their);
	  insertLeading(hunk, their, mine);

	  // Now in the overlap content. Scan through and select the best changes from each.
	  while (mine.index < mine.lines.length && their.index < their.lines.length) {
	    var mineCurrent = mine.lines[mine.index],
	        theirCurrent = their.lines[their.index];

	    if ((mineCurrent[0] === '-' || mineCurrent[0] === '+') && (theirCurrent[0] === '-' || theirCurrent[0] === '+')) {
	      // Both modified ...
	      mutualChange(hunk, mine, their);
	    } else if (mineCurrent[0] === '+' && theirCurrent[0] === ' ') {
	      /*istanbul ignore start*/var _hunk$lines;

	      /*istanbul ignore end*/ // Mine inserted
	      /*istanbul ignore start*/(_hunk$lines = /*istanbul ignore end*/hunk.lines).push. /*istanbul ignore start*/apply /*istanbul ignore end*/( /*istanbul ignore start*/_hunk$lines /*istanbul ignore end*/, /*istanbul ignore start*/_toConsumableArray( /*istanbul ignore end*/collectChange(mine)));
	    } else if (theirCurrent[0] === '+' && mineCurrent[0] === ' ') {
	      /*istanbul ignore start*/var _hunk$lines2;

	      /*istanbul ignore end*/ // Theirs inserted
	      /*istanbul ignore start*/(_hunk$lines2 = /*istanbul ignore end*/hunk.lines).push. /*istanbul ignore start*/apply /*istanbul ignore end*/( /*istanbul ignore start*/_hunk$lines2 /*istanbul ignore end*/, /*istanbul ignore start*/_toConsumableArray( /*istanbul ignore end*/collectChange(their)));
	    } else if (mineCurrent[0] === '-' && theirCurrent[0] === ' ') {
	      // Mine removed or edited
	      removal(hunk, mine, their);
	    } else if (theirCurrent[0] === '-' && mineCurrent[0] === ' ') {
	      // Their removed or edited
	      removal(hunk, their, mine, true);
	    } else if (mineCurrent === theirCurrent) {
	      // Context identity
	      hunk.lines.push(mineCurrent);
	      mine.index++;
	      their.index++;
	    } else {
	      // Context mismatch
	      conflict(hunk, collectChange(mine), collectChange(their));
	    }
	  }

	  // Now push anything that may be remaining
	  insertTrailing(hunk, mine);
	  insertTrailing(hunk, their);

	  calcLineCount(hunk);
	}

	function mutualChange(hunk, mine, their) {
	  var myChanges = collectChange(mine),
	      theirChanges = collectChange(their);

	  if (allRemoves(myChanges) && allRemoves(theirChanges)) {
	    // Special case for remove changes that are supersets of one another
	    if ( /*istanbul ignore start*/(0, _array.arrayStartsWith) /*istanbul ignore end*/(myChanges, theirChanges) && skipRemoveSuperset(their, myChanges, myChanges.length - theirChanges.length)) {
	      /*istanbul ignore start*/var _hunk$lines3;

	      /*istanbul ignore end*/ /*istanbul ignore start*/(_hunk$lines3 = /*istanbul ignore end*/hunk.lines).push. /*istanbul ignore start*/apply /*istanbul ignore end*/( /*istanbul ignore start*/_hunk$lines3 /*istanbul ignore end*/, /*istanbul ignore start*/_toConsumableArray( /*istanbul ignore end*/myChanges));
	      return;
	    } else if ( /*istanbul ignore start*/(0, _array.arrayStartsWith) /*istanbul ignore end*/(theirChanges, myChanges) && skipRemoveSuperset(mine, theirChanges, theirChanges.length - myChanges.length)) {
	      /*istanbul ignore start*/var _hunk$lines4;

	      /*istanbul ignore end*/ /*istanbul ignore start*/(_hunk$lines4 = /*istanbul ignore end*/hunk.lines).push. /*istanbul ignore start*/apply /*istanbul ignore end*/( /*istanbul ignore start*/_hunk$lines4 /*istanbul ignore end*/, /*istanbul ignore start*/_toConsumableArray( /*istanbul ignore end*/theirChanges));
	      return;
	    }
	  } else if ( /*istanbul ignore start*/(0, _array.arrayEqual) /*istanbul ignore end*/(myChanges, theirChanges)) {
	    /*istanbul ignore start*/var _hunk$lines5;

	    /*istanbul ignore end*/ /*istanbul ignore start*/(_hunk$lines5 = /*istanbul ignore end*/hunk.lines).push. /*istanbul ignore start*/apply /*istanbul ignore end*/( /*istanbul ignore start*/_hunk$lines5 /*istanbul ignore end*/, /*istanbul ignore start*/_toConsumableArray( /*istanbul ignore end*/myChanges));
	    return;
	  }

	  conflict(hunk, myChanges, theirChanges);
	}

	function removal(hunk, mine, their, swap) {
	  var myChanges = collectChange(mine),
	      theirChanges = collectContext(their, myChanges);
	  if (theirChanges.merged) {
	    /*istanbul ignore start*/var _hunk$lines6;

	    /*istanbul ignore end*/ /*istanbul ignore start*/(_hunk$lines6 = /*istanbul ignore end*/hunk.lines).push. /*istanbul ignore start*/apply /*istanbul ignore end*/( /*istanbul ignore start*/_hunk$lines6 /*istanbul ignore end*/, /*istanbul ignore start*/_toConsumableArray( /*istanbul ignore end*/theirChanges.merged));
	  } else {
	    conflict(hunk, swap ? theirChanges : myChanges, swap ? myChanges : theirChanges);
	  }
	}

	function conflict(hunk, mine, their) {
	  hunk.conflict = true;
	  hunk.lines.push({
	    conflict: true,
	    mine: mine,
	    theirs: their
	  });
	}

	function insertLeading(hunk, insert, their) {
	  while (insert.offset < their.offset && insert.index < insert.lines.length) {
	    var line = insert.lines[insert.index++];
	    hunk.lines.push(line);
	    insert.offset++;
	  }
	}
	function insertTrailing(hunk, insert) {
	  while (insert.index < insert.lines.length) {
	    var line = insert.lines[insert.index++];
	    hunk.lines.push(line);
	  }
	}

	function collectChange(state) {
	  var ret = [],
	      operation = state.lines[state.index][0];
	  while (state.index < state.lines.length) {
	    var line = state.lines[state.index];

	    // Group additions that are immediately after subtractions and treat them as one "atomic" modify change.
	    if (operation === '-' && line[0] === '+') {
	      operation = '+';
	    }

	    if (operation === line[0]) {
	      ret.push(line);
	      state.index++;
	    } else {
	      break;
	    }
	  }

	  return ret;
	}
	function collectContext(state, matchChanges) {
	  var changes = [],
	      merged = [],
	      matchIndex = 0,
	      contextChanges = false,
	      conflicted = false;
	  while (matchIndex < matchChanges.length && state.index < state.lines.length) {
	    var change = state.lines[state.index],
	        match = matchChanges[matchIndex];

	    // Once we've hit our add, then we are done
	    if (match[0] === '+') {
	      break;
	    }

	    contextChanges = contextChanges || change[0] !== ' ';

	    merged.push(match);
	    matchIndex++;

	    // Consume any additions in the other block as a conflict to attempt
	    // to pull in the remaining context after this
	    if (change[0] === '+') {
	      conflicted = true;

	      while (change[0] === '+') {
	        changes.push(change);
	        change = state.lines[++state.index];
	      }
	    }

	    if (match.substr(1) === change.substr(1)) {
	      changes.push(change);
	      state.index++;
	    } else {
	      conflicted = true;
	    }
	  }

	  if ((matchChanges[matchIndex] || '')[0] === '+' && contextChanges) {
	    conflicted = true;
	  }

	  if (conflicted) {
	    return changes;
	  }

	  while (matchIndex < matchChanges.length) {
	    merged.push(matchChanges[matchIndex++]);
	  }

	  return {
	    merged: merged,
	    changes: changes
	  };
	}

	function allRemoves(changes) {
	  return changes.reduce(function (prev, change) {
	    return prev && change[0] === '-';
	  }, true);
	}
	function skipRemoveSuperset(state, removeChanges, delta) {
	  for (var i = 0; i < delta; i++) {
	    var changeContent = removeChanges[removeChanges.length - delta + i].substr(1);
	    if (state.lines[state.index + i] !== ' ' + changeContent) {
	      return false;
	    }
	  }

	  state.index += delta;
	  return true;
	}

	function calcOldNewLineCount(lines) {
	  var oldLines = 0;
	  var newLines = 0;

	  lines.forEach(function (line) {
	    if (typeof line !== 'string') {
	      var myCount = calcOldNewLineCount(line.mine);
	      var theirCount = calcOldNewLineCount(line.theirs);

	      if (oldLines !== undefined) {
	        if (myCount.oldLines === theirCount.oldLines) {
	          oldLines += myCount.oldLines;
	        } else {
	          oldLines = undefined;
	        }
	      }

	      if (newLines !== undefined) {
	        if (myCount.newLines === theirCount.newLines) {
	          newLines += myCount.newLines;
	        } else {
	          newLines = undefined;
	        }
	      }
	    } else {
	      if (newLines !== undefined && (line[0] === '+' || line[0] === ' ')) {
	        newLines++;
	      }
	      if (oldLines !== undefined && (line[0] === '-' || line[0] === ' ')) {
	        oldLines++;
	      }
	    }
	  });

	  return { oldLines: oldLines, newLines: newLines };
	}



/***/ }),
/* 14 */
/***/ (function(module, exports, __webpack_require__) {

	/*istanbul ignore start*/'use strict';

	exports.__esModule = true;
	exports. /*istanbul ignore end*/structuredPatch = structuredPatch;
	/*istanbul ignore start*/exports. /*istanbul ignore end*/createTwoFilesPatch = createTwoFilesPatch;
	/*istanbul ignore start*/exports. /*istanbul ignore end*/createPatch = createPatch;

	var /*istanbul ignore start*/_line = __webpack_require__(5) /*istanbul ignore end*/;

	/*istanbul ignore start*/function _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }

	/*istanbul ignore end*/function structuredPatch(oldFileName, newFileName, oldStr, newStr, oldHeader, newHeader, options) {
	  if (!options) {
	    options = {};
	  }
	  if (typeof options.context === 'undefined') {
	    options.context = 4;
	  }

	  var diff = /*istanbul ignore start*/(0, _line.diffLines) /*istanbul ignore end*/(oldStr, newStr, options);
	  diff.push({ value: '', lines: [] }); // Append an empty value to make cleanup easier

	  function contextLines(lines) {
	    return lines.map(function (entry) {
	      return ' ' + entry;
	    });
	  }

	  var hunks = [];
	  var oldRangeStart = 0,
	      newRangeStart = 0,
	      curRange = [],
	      oldLine = 1,
	      newLine = 1;

	  /*istanbul ignore start*/var _loop = function _loop( /*istanbul ignore end*/i) {
	    var current = diff[i],
	        lines = current.lines || current.value.replace(/\n$/, '').split('\n');
	    current.lines = lines;

	    if (current.added || current.removed) {
	      /*istanbul ignore start*/var _curRange;

	      /*istanbul ignore end*/ // If we have previous context, start with that
	      if (!oldRangeStart) {
	        var prev = diff[i - 1];
	        oldRangeStart = oldLine;
	        newRangeStart = newLine;

	        if (prev) {
	          curRange = options.context > 0 ? contextLines(prev.lines.slice(-options.context)) : [];
	          oldRangeStart -= curRange.length;
	          newRangeStart -= curRange.length;
	        }
	      }

	      // Output our changes
	      /*istanbul ignore start*/(_curRange = /*istanbul ignore end*/curRange).push. /*istanbul ignore start*/apply /*istanbul ignore end*/( /*istanbul ignore start*/_curRange /*istanbul ignore end*/, /*istanbul ignore start*/_toConsumableArray( /*istanbul ignore end*/lines.map(function (entry) {
	        return (current.added ? '+' : '-') + entry;
	      })));

	      // 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 <= options.context * 2 && i < diff.length - 2) {
	          /*istanbul ignore start*/var _curRange2;

	          /*istanbul ignore end*/ // Overlapping
	          /*istanbul ignore start*/(_curRange2 = /*istanbul ignore end*/curRange).push. /*istanbul ignore start*/apply /*istanbul ignore end*/( /*istanbul ignore start*/_curRange2 /*istanbul ignore end*/, /*istanbul ignore start*/_toConsumableArray( /*istanbul ignore end*/contextLines(lines)));
	        } else {
	          /*istanbul ignore start*/var _curRange3;

	          /*istanbul ignore end*/ // end the range and output
	          var contextSize = Math.min(lines.length, options.context);
	          /*istanbul ignore start*/(_curRange3 = /*istanbul ignore end*/curRange).push. /*istanbul ignore start*/apply /*istanbul ignore end*/( /*istanbul ignore start*/_curRange3 /*istanbul ignore end*/, /*istanbul ignore start*/_toConsumableArray( /*istanbul ignore end*/contextLines(lines.slice(0, contextSize))));

	          var hunk = {
	            oldStart: oldRangeStart,
	            oldLines: oldLine - oldRangeStart + contextSize,
	            newStart: newRangeStart,
	            newLines: newLine - newRangeStart + contextSize,
	            lines: curRange
	          };
	          if (i >= diff.length - 2 && lines.length <= options.context) {
	            // EOF is inside this hunk
	            var oldEOFNewline = /\n$/.test(oldStr);
	            var newEOFNewline = /\n$/.test(newStr);
	            if (lines.length == 0 && !oldEOFNewline) {
	              // special case: old has no eol and no trailing context; no-nl can end up before adds
	              curRange.splice(hunk.oldLines, 0, '\\ No newline at end of file');
	            } else if (!oldEOFNewline || !newEOFNewline) {
	              curRange.push('\\ No newline at end of file');
	            }
	          }
	          hunks.push(hunk);

	          oldRangeStart = 0;
	          newRangeStart = 0;
	          curRange = [];
	        }
	      }
	      oldLine += lines.length;
	      newLine += lines.length;
	    }
	  };

	  for (var i = 0; i < diff.length; i++) {
	    /*istanbul ignore start*/_loop( /*istanbul ignore end*/i);
	  }

	  return {
	    oldFileName: oldFileName, newFileName: newFileName,
	    oldHeader: oldHeader, newHeader: newHeader,
	    hunks: hunks
	  };
	}

	function createTwoFilesPatch(oldFileName, newFileName, oldStr, newStr, oldHeader, newHeader, options) {
	  var diff = structuredPatch(oldFileName, newFileName, oldStr, newStr, oldHeader, newHeader, options);

	  var ret = [];
	  if (oldFileName == newFileName) {
	    ret.push('Index: ' + oldFileName);
	  }
	  ret.push('===================================================================');
	  ret.push('--- ' + diff.oldFileName + (typeof diff.oldHeader === 'undefined' ? '' : '\t' + diff.oldHeader));
	  ret.push('+++ ' + diff.newFileName + (typeof diff.newHeader === 'undefined' ? '' : '\t' + diff.newHeader));

	  for (var i = 0; i < diff.hunks.length; i++) {
	    var hunk = diff.hunks[i];
	    ret.push('@@ -' + hunk.oldStart + ',' + hunk.oldLines + ' +' + hunk.newStart + ',' + hunk.newLines + ' @@');
	    ret.push.apply(ret, hunk.lines);
	  }

	  return ret.join('\n') + '\n';
	}

	function createPatch(fileName, oldStr, newStr, oldHeader, newHeader, options) {
	  return createTwoFilesPatch(fileName, fileName, oldStr, newStr, oldHeader, newHeader, options);
	}



/***/ }),
/* 15 */
/***/ (function(module, exports) {

	/*istanbul ignore start*/"use strict";

	exports.__esModule = true;
	exports. /*istanbul ignore end*/arrayEqual = arrayEqual;
	/*istanbul ignore start*/exports. /*istanbul ignore end*/arrayStartsWith = arrayStartsWith;
	function arrayEqual(a, b) {
	  if (a.length !== b.length) {
	    return false;
	  }

	  return arrayStartsWith(a, b);
	}

	function arrayStartsWith(array, start) {
	  if (start.length > array.length) {
	    return false;
	  }

	  for (var i = 0; i < start.length; i++) {
	    if (start[i] !== array[i]) {
	      return false;
	    }
	  }

	  return true;
	}



/***/ }),
/* 16 */
/***/ (function(module, exports) {

	/*istanbul ignore start*/"use strict";

	exports.__esModule = true;
	exports. /*istanbul ignore end*/convertChangesToDMP = convertChangesToDMP;
	// See: http://code.google.com/p/google-diff-match-patch/wiki/API
	function convertChangesToDMP(changes) {
	  var ret = [],
	      change = /*istanbul ignore start*/void 0 /*istanbul ignore end*/,
	      operation = /*istanbul ignore start*/void 0 /*istanbul ignore end*/;
	  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;
	}



/***/ }),
/* 17 */
/***/ (function(module, exports) {

	/*istanbul ignore start*/'use strict';

	exports.__esModule = true;
	exports. /*istanbul ignore end*/convertChangesToXML = convertChangesToXML;
	function convertChangesToXML(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('');
	}

	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;
	}



/***/ })
/******/ ])
});
;
},{}],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.

var objectCreate = Object.create || objectCreatePolyfill
var objectKeys = Object.keys || objectKeysPolyfill
var bind = Function.prototype.bind || functionBindPolyfill

function EventEmitter() {
  if (!this._events || !Object.prototype.hasOwnProperty.call(this, '_events')) {
    this._events = objectCreate(null);
    this._eventsCount = 0;
  }

  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.
var defaultMaxListeners = 10;

var hasDefineProperty;
try {
  var o = {};
  if (Object.defineProperty) Object.defineProperty(o, 'x', { value: 0 });
  hasDefineProperty = o.x === 0;
} catch (err) { hasDefineProperty = false }
if (hasDefineProperty) {
  Object.defineProperty(EventEmitter, 'defaultMaxListeners', {
    enumerable: true,
    get: function() {
      return defaultMaxListeners;
    },
    set: function(arg) {
      // check whether the input is a positive number (whose value is zero or
      // greater and not a NaN).
      if (typeof arg !== 'number' || arg < 0 || arg !== arg)
        throw new TypeError('"defaultMaxListeners" must be a positive number');
      defaultMaxListeners = arg;
    }
  });
} else {
  EventEmitter.defaultMaxListeners = defaultMaxListeners;
}

// 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 setMaxListeners(n) {
  if (typeof n !== 'number' || n < 0 || isNaN(n))
    throw new TypeError('"n" argument must be a positive number');
  this._maxListeners = n;
  return this;
};

function $getMaxListeners(that) {
  if (that._maxListeners === undefined)
    return EventEmitter.defaultMaxListeners;
  return that._maxListeners;
}

EventEmitter.prototype.getMaxListeners = function getMaxListeners() {
  return $getMaxListeners(this);
};

// These standalone emit* functions are used to optimize calling of event
// handlers for fast cases because emit() itself often has a variable number of
// arguments and can be deoptimized because of that. These functions always have
// the same number of arguments and thus do not get deoptimized, so the code
// inside them can execute faster.
function emitNone(handler, isFn, self) {
  if (isFn)
    handler.call(self);
  else {
    var len = handler.length;
    var listeners = arrayClone(handler, len);
    for (var i = 0; i < len; ++i)
      listeners[i].call(self);
  }
}
function emitOne(handler, isFn, self, arg1) {
  if (isFn)
    handler.call(self, arg1);
  else {
    var len = handler.length;
    var listeners = arrayClone(handler, len);
    for (var i = 0; i < len; ++i)
      listeners[i].call(self, arg1);
  }
}
function emitTwo(handler, isFn, self, arg1, arg2) {
  if (isFn)
    handler.call(self, arg1, arg2);
  else {
    var len = handler.length;
    var listeners = arrayClone(handler, len);
    for (var i = 0; i < len; ++i)
      listeners[i].call(self, arg1, arg2);
  }
}
function emitThree(handler, isFn, self, arg1, arg2, arg3) {
  if (isFn)
    handler.call(self, arg1, arg2, arg3);
  else {
    var len = handler.length;
    var listeners = arrayClone(handler, len);
    for (var i = 0; i < len; ++i)
      listeners[i].call(self, arg1, arg2, arg3);
  }
}

function emitMany(handler, isFn, self, args) {
  if (isFn)
    handler.apply(self, args);
  else {
    var len = handler.length;
    var listeners = arrayClone(handler, len);
    for (var i = 0; i < len; ++i)
      listeners[i].apply(self, args);
  }
}

EventEmitter.prototype.emit = function emit(type) {
  var er, handler, len, args, i, events;
  var doError = (type === 'error');

  events = this._events;
  if (events)
    doError = (doError && events.error == null);
  else if (!doError)
    return false;

  // If there is no 'error' event listener then throw.
  if (doError) {
    if (arguments.length > 1)
      er = arguments[1];
    if (er instanceof Error) {
      throw er; // Unhandled 'error' event
    } else {
      // At least give some kind of context to the user
      var err = new Error('Unhandled "error" event. (' + er + ')');
      err.context = er;
      throw err;
    }
    return false;
  }

  handler = events[type];

  if (!handler)
    return false;

  var isFn = typeof handler === 'function';
  len = arguments.length;
  switch (len) {
      // fast cases
    case 1:
      emitNone(handler, isFn, this);
      break;
    case 2:
      emitOne(handler, isFn, this, arguments[1]);
      break;
    case 3:
      emitTwo(handler, isFn, this, arguments[1], arguments[2]);
      break;
    case 4:
      emitThree(handler, isFn, this, arguments[1], arguments[2], arguments[3]);
      break;
      // slower
    default:
      args = new Array(len - 1);
      for (i = 1; i < len; i++)
        args[i - 1] = arguments[i];
      emitMany(handler, isFn, this, args);
  }

  return true;
};

function _addListener(target, type, listener, prepend) {
  var m;
  var events;
  var existing;

  if (typeof listener !== 'function')
    throw new TypeError('"listener" argument must be a function');

  events = target._events;
  if (!events) {
    events = target._events = objectCreate(null);
    target._eventsCount = 0;
  } else {
    // To avoid recursion in the case that type === "newListener"! Before
    // adding it to the listeners, first emit "newListener".
    if (events.newListener) {
      target.emit('newListener', type,
          listener.listener ? listener.listener : listener);

      // Re-assign `events` because a newListener handler could have caused the
      // this._events to be assigned to a new object
      events = target._events;
    }
    existing = events[type];
  }

  if (!existing) {
    // Optimize the case of one listener. Don't need the extra array object.
    existing = events[type] = listener;
    ++target._eventsCount;
  } else {
    if (typeof existing === 'function') {
      // Adding the second element, need to change to array.
      existing = events[type] =
          prepend ? [listener, existing] : [existing, listener];
    } else {
      // If we've already got an array, just append.
      if (prepend) {
        existing.unshift(listener);
      } else {
        existing.push(listener);
      }
    }

    // Check for listener leak
    if (!existing.warned) {
      m = $getMaxListeners(target);
      if (m && m > 0 && existing.length > m) {
        existing.warned = true;
        var w = new Error('Possible EventEmitter memory leak detected. ' +
            existing.length + ' "' + String(type) + '" listeners ' +
            'added. Use emitter.setMaxListeners() to ' +
            'increase limit.');
        w.name = 'MaxListenersExceededWarning';
        w.emitter = target;
        w.type = type;
        w.count = existing.length;
        if (typeof console === 'object' && console.warn) {
          console.warn('%s: %s', w.name, w.message);
        }
      }
    }
  }

  return target;
}

EventEmitter.prototype.addListener = function addListener(type, listener) {
  return _addListener(this, type, listener, false);
};

EventEmitter.prototype.on = EventEmitter.prototype.addListener;

EventEmitter.prototype.prependListener =
    function prependListener(type, listener) {
      return _addListener(this, type, listener, true);
    };

function onceWrapper() {
  if (!this.fired) {
    this.target.removeListener(this.type, this.wrapFn);
    this.fired = true;
    switch (arguments.length) {
      case 0:
        return this.listener.call(this.target);
      case 1:
        return this.listener.call(this.target, arguments[0]);
      case 2:
        return this.listener.call(this.target, arguments[0], arguments[1]);
      case 3:
        return this.listener.call(this.target, arguments[0], arguments[1],
            arguments[2]);
      default:
        var args = new Array(arguments.length);
        for (var i = 0; i < args.length; ++i)
          args[i] = arguments[i];
        this.listener.apply(this.target, args);
    }
  }
}

function _onceWrap(target, type, listener) {
  var state = { fired: false, wrapFn: undefined, target: target, type: type, listener: listener };
  var wrapped = bind.call(onceWrapper, state);
  wrapped.listener = listener;
  state.wrapFn = wrapped;
  return wrapped;
}

EventEmitter.prototype.once = function once(type, listener) {
  if (typeof listener !== 'function')
    throw new TypeError('"listener" argument must be a function');
  this.on(type, _onceWrap(this, type, listener));
  return this;
};

EventEmitter.prototype.prependOnceListener =
    function prependOnceListener(type, listener) {
      if (typeof listener !== 'function')
        throw new TypeError('"listener" argument must be a function');
      this.prependListener(type, _onceWrap(this, type, listener));
      return this;
    };

// Emits a 'removeListener' event if and only if the listener was removed.
EventEmitter.prototype.removeListener =
    function removeListener(type, listener) {
      var list, events, position, i, originalListener;

      if (typeof listener !== 'function')
        throw new TypeError('"listener" argument must be a function');

      events = this._events;
      if (!events)
        return this;

      list = events[type];
      if (!list)
        return this;

      if (list === listener || list.listener === listener) {
        if (--this._eventsCount === 0)
          this._events = objectCreate(null);
        else {
          delete events[type];
          if (events.removeListener)
            this.emit('removeListener', type, list.listener || listener);
        }
      } else if (typeof list !== 'function') {
        position = -1;

        for (i = list.length - 1; i >= 0; i--) {
          if (list[i] === listener || list[i].listener === listener) {
            originalListener = list[i].listener;
            position = i;
            break;
          }
        }

        if (position < 0)
          return this;

        if (position === 0)
          list.shift();
        else
          spliceOne(list, position);

        if (list.length === 1)
          events[type] = list[0];

        if (events.removeListener)
          this.emit('removeListener', type, originalListener || listener);
      }

      return this;
    };

EventEmitter.prototype.removeAllListeners =
    function removeAllListeners(type) {
      var listeners, events, i;

      events = this._events;
      if (!events)
        return this;

      // not listening for removeListener, no need to emit
      if (!events.removeListener) {
        if (arguments.length === 0) {
          this._events = objectCreate(null);
          this._eventsCount = 0;
        } else if (events[type]) {
          if (--this._eventsCount === 0)
            this._events = objectCreate(null);
          else
            delete events[type];
        }
        return this;
      }

      // emit removeListener for all listeners on all events
      if (arguments.length === 0) {
        var keys = objectKeys(events);
        var key;
        for (i = 0; i < keys.length; ++i) {
          key = keys[i];
          if (key === 'removeListener') continue;
          this.removeAllListeners(key);
        }
        this.removeAllListeners('removeListener');
        this._events = objectCreate(null);
        this._eventsCount = 0;
        return this;
      }

      listeners = events[type];

      if (typeof listeners === 'function') {
        this.removeListener(type, listeners);
      } else if (listeners) {
        // LIFO order
        for (i = listeners.length - 1; i >= 0; i--) {
          this.removeListener(type, listeners[i]);
        }
      }

      return this;
    };

function _listeners(target, type, unwrap) {
  var events = target._events;

  if (!events)
    return [];

  var evlistener = events[type];
  if (!evlistener)
    return [];

  if (typeof evlistener === 'function')
    return unwrap ? [evlistener.listener || evlistener] : [evlistener];

  return unwrap ? unwrapListeners(evlistener) : arrayClone(evlistener, evlistener.length);
}

EventEmitter.prototype.listeners = function listeners(type) {
  return _listeners(this, type, true);
};

EventEmitter.prototype.rawListeners = function rawListeners(type) {
  return _listeners(this, type, false);
};

EventEmitter.listenerCount = function(emitter, type) {
  if (typeof emitter.listenerCount === 'function') {
    return emitter.listenerCount(type);
  } else {
    return listenerCount.call(emitter, type);
  }
};

EventEmitter.prototype.listenerCount = listenerCount;
function listenerCount(type) {
  var events = this._events;

  if (events) {
    var evlistener = events[type];

    if (typeof evlistener === 'function') {
      return 1;
    } else if (evlistener) {
      return evlistener.length;
    }
  }

  return 0;
}

EventEmitter.prototype.eventNames = function eventNames() {
  return this._eventsCount > 0 ? Reflect.ownKeys(this._events) : [];
};

// About 1.5x faster than the two-arg version of Array#splice().
function spliceOne(list, index) {
  for (var i = index, k = i + 1, n = list.length; k < n; i += 1, k += 1)
    list[i] = list[k];
  list.pop();
}

function arrayClone(arr, n) {
  var copy = new Array(n);
  for (var i = 0; i < n; ++i)
    copy[i] = arr[i];
  return copy;
}

function unwrapListeners(arr) {
  var ret = new Array(arr.length);
  for (var i = 0; i < ret.length; ++i) {
    ret[i] = arr[i].listener || arr[i];
  }
  return ret;
}

function objectCreatePolyfill(proto) {
  var F = function() {};
  F.prototype = proto;
  return new F;
}
function objectKeysPolyfill(obj) {
  var keys = [];
  for (var k in obj) if (Object.prototype.hasOwnProperty.call(obj, k)) {
    keys.push(k);
  }
  return k;
}
function functionBindPolyfill(context) {
  var fn = this;
  return function () {
    return fn.apply(context, arguments);
  };
}

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

/* eslint no-invalid-this: 1 */

var ERROR_MESSAGE = 'Function.prototype.bind called on incompatible ';
var slice = Array.prototype.slice;
var toStr = Object.prototype.toString;
var funcType = '[object Function]';

module.exports = function bind(that) {
    var target = this;
    if (typeof target !== 'function' || toStr.call(target) !== funcType) {
        throw new TypeError(ERROR_MESSAGE + target);
    }
    var args = slice.call(arguments, 1);

    var bound;
    var binder = function () {
        if (this instanceof bound) {
            var result = target.apply(
                this,
                args.concat(slice.call(arguments))
            );
            if (Object(result) === result) {
                return result;
            }
            return this;
        } else {
            return target.apply(
                that,
                args.concat(slice.call(arguments))
            );
        }
    };

    var boundLength = Math.max(0, target.length - args.length);
    var boundArgs = [];
    for (var i = 0; i < boundLength; i++) {
        boundArgs.push('$' + i);
    }

    bound = Function('binder', 'return function (' + boundArgs.join(',') + '){ return binder.apply(this,arguments); }')(binder);

    if (target.prototype) {
        var Empty = function Empty() {};
        Empty.prototype = target.prototype;
        bound.prototype = new Empty();
        Empty.prototype = null;
    }

    return bound;
};

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

var implementation = require('./implementation');

module.exports = Function.prototype.bind || implementation;

},{"./implementation":51}],53:[function(require,module,exports){
'use strict';

/* eslint complexity: [2, 17], max-statements: [2, 33] */
module.exports = function hasSymbols() {
	if (typeof Symbol !== 'function' || typeof Object.getOwnPropertySymbols !== 'function') { return false; }
	if (typeof Symbol.iterator === 'symbol') { return true; }

	var obj = {};
	var sym = Symbol('test');
	var symObj = Object(sym);
	if (typeof sym === 'string') { return false; }

	if (Object.prototype.toString.call(sym) !== '[object Symbol]') { return false; }
	if (Object.prototype.toString.call(symObj) !== '[object Symbol]') { return false; }

	// temp disabled per https://github.com/ljharb/object.assign/issues/17
	// if (sym instanceof Symbol) { return false; }
	// temp disabled per https://github.com/WebReflection/get-own-property-symbols/issues/4
	// if (!(symObj instanceof Symbol)) { return false; }

	// if (typeof Symbol.prototype.toString !== 'function') { return false; }
	// if (String(sym) !== Symbol.prototype.toString.call(sym)) { return false; }

	var symVal = 42;
	obj[sym] = symVal;
	for (sym in obj) { return false; } // eslint-disable-line no-restricted-syntax
	if (typeof Object.keys === 'function' && Object.keys(obj).length !== 0) { return false; }

	if (typeof Object.getOwnPropertyNames === 'function' && Object.getOwnPropertyNames(obj).length !== 0) { return false; }

	var syms = Object.getOwnPropertySymbols(obj);
	if (syms.length !== 1 || syms[0] !== sym) { return false; }

	if (!Object.prototype.propertyIsEnumerable.call(obj, sym)) { return false; }

	if (typeof Object.getOwnPropertyDescriptor === 'function') {
		var descriptor = Object.getOwnPropertyDescriptor(obj, sym);
		if (descriptor.value !== symVal || descriptor.enumerable !== true) { return false; }
	}

	return true;
};

},{}],54:[function(require,module,exports){
(function (global){
/*! https://mths.be/he v1.2.0 by @mathias | MIT license */
;(function(root) {

	// Detect free variables `exports`.
	var freeExports = typeof exports == 'object' && exports;

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

	// Detect free variable `global`, from Node.js or Browserified code,
	// and use it as `root`.
	var freeGlobal = typeof global == 'object' && global;
	if (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal) {
		root = freeGlobal;
	}

	/*--------------------------------------------------------------------------*/

	// All astral symbols.
	var regexAstralSymbols = /[\uD800-\uDBFF][\uDC00-\uDFFF]/g;
	// All ASCII symbols (not just printable ASCII) except those listed in the
	// first column of the overrides table.
	// https://html.spec.whatwg.org/multipage/syntax.html#table-charref-overrides
	var regexAsciiWhitelist = /[\x01-\x7F]/g;
	// All BMP symbols that are not ASCII newlines, printable ASCII symbols, or
	// code points listed in the first column of the overrides table on
	// https://html.spec.whatwg.org/multipage/syntax.html#table-charref-overrides.
	var regexBmpWhitelist = /[\x01-\t\x0B\f\x0E-\x1F\x7F\x81\x8D\x8F\x90\x9D\xA0-\uFFFF]/g;

	var regexEncodeNonAscii = /<\u20D2|=\u20E5|>\u20D2|\u205F\u200A|\u219D\u0338|\u2202\u0338|\u2220\u20D2|\u2229\uFE00|\u222A\uFE00|\u223C\u20D2|\u223D\u0331|\u223E\u0333|\u2242\u0338|\u224B\u0338|\u224D\u20D2|\u224E\u0338|\u224F\u0338|\u2250\u0338|\u2261\u20E5|\u2264\u20D2|\u2265\u20D2|\u2266\u0338|\u2267\u0338|\u2268\uFE00|\u2269\uFE00|\u226A\u0338|\u226A\u20D2|\u226B\u0338|\u226B\u20D2|\u227F\u0338|\u2282\u20D2|\u2283\u20D2|\u228A\uFE00|\u228B\uFE00|\u228F\u0338|\u2290\u0338|\u2293\uFE00|\u2294\uFE00|\u22B4\u20D2|\u22B5\u20D2|\u22D8\u0338|\u22D9\u0338|\u22DA\uFE00|\u22DB\uFE00|\u22F5\u0338|\u22F9\u0338|\u2933\u0338|\u29CF\u0338|\u29D0\u0338|\u2A6D\u0338|\u2A70\u0338|\u2A7D\u0338|\u2A7E\u0338|\u2AA1\u0338|\u2AA2\u0338|\u2AAC\uFE00|\u2AAD\uFE00|\u2AAF\u0338|\u2AB0\u0338|\u2AC5\u0338|\u2AC6\u0338|\u2ACB\uFE00|\u2ACC\uFE00|\u2AFD\u20E5|[\xA0-\u0113\u0116-\u0122\u0124-\u012B\u012E-\u014D\u0150-\u017E\u0192\u01B5\u01F5\u0237\u02C6\u02C7\u02D8-\u02DD\u0311\u0391-\u03A1\u03A3-\u03A9\u03B1-\u03C9\u03D1\u03D2\u03D5\u03D6\u03DC\u03DD\u03F0\u03F1\u03F5\u03F6\u0401-\u040C\u040E-\u044F\u0451-\u045C\u045E\u045F\u2002-\u2005\u2007-\u2010\u2013-\u2016\u2018-\u201A\u201C-\u201E\u2020-\u2022\u2025\u2026\u2030-\u2035\u2039\u203A\u203E\u2041\u2043\u2044\u204F\u2057\u205F-\u2063\u20AC\u20DB\u20DC\u2102\u2105\u210A-\u2113\u2115-\u211E\u2122\u2124\u2127-\u2129\u212C\u212D\u212F-\u2131\u2133-\u2138\u2145-\u2148\u2153-\u215E\u2190-\u219B\u219D-\u21A7\u21A9-\u21AE\u21B0-\u21B3\u21B5-\u21B7\u21BA-\u21DB\u21DD\u21E4\u21E5\u21F5\u21FD-\u2205\u2207-\u2209\u220B\u220C\u220F-\u2214\u2216-\u2218\u221A\u221D-\u2238\u223A-\u2257\u2259\u225A\u225C\u225F-\u2262\u2264-\u228B\u228D-\u229B\u229D-\u22A5\u22A7-\u22B0\u22B2-\u22BB\u22BD-\u22DB\u22DE-\u22E3\u22E6-\u22F7\u22F9-\u22FE\u2305\u2306\u2308-\u2310\u2312\u2313\u2315\u2316\u231C-\u231F\u2322\u2323\u232D\u232E\u2336\u233D\u233F\u237C\u23B0\u23B1\u23B4-\u23B6\u23DC-\u23DF\u23E2\u23E7\u2423\u24C8\u2500\u2502\u250C\u2510\u2514\u2518\u251C\u2524\u252C\u2534\u253C\u2550-\u256C\u2580\u2584\u2588\u2591-\u2593\u25A1\u25AA\u25AB\u25AD\u25AE\u25B1\u25B3-\u25B5\u25B8\u25B9\u25BD-\u25BF\u25C2\u25C3\u25CA\u25CB\u25EC\u25EF\u25F8-\u25FC\u2605\u2606\u260E\u2640\u2642\u2660\u2663\u2665\u2666\u266A\u266D-\u266F\u2713\u2717\u2720\u2736\u2758\u2772\u2773\u27C8\u27C9\u27E6-\u27ED\u27F5-\u27FA\u27FC\u27FF\u2902-\u2905\u290C-\u2913\u2916\u2919-\u2920\u2923-\u292A\u2933\u2935-\u2939\u293C\u293D\u2945\u2948-\u294B\u294E-\u2976\u2978\u2979\u297B-\u297F\u2985\u2986\u298B-\u2996\u299A\u299C\u299D\u29A4-\u29B7\u29B9\u29BB\u29BC\u29BE-\u29C5\u29C9\u29CD-\u29D0\u29DC-\u29DE\u29E3-\u29E5\u29EB\u29F4\u29F6\u2A00-\u2A02\u2A04\u2A06\u2A0C\u2A0D\u2A10-\u2A17\u2A22-\u2A27\u2A29\u2A2A\u2A2D-\u2A31\u2A33-\u2A3C\u2A3F\u2A40\u2A42-\u2A4D\u2A50\u2A53-\u2A58\u2A5A-\u2A5D\u2A5F\u2A66\u2A6A\u2A6D-\u2A75\u2A77-\u2A9A\u2A9D-\u2AA2\u2AA4-\u2AB0\u2AB3-\u2AC8\u2ACB\u2ACC\u2ACF-\u2ADB\u2AE4\u2AE6-\u2AE9\u2AEB-\u2AF3\u2AFD\uFB00-\uFB04]|\uD835[\uDC9C\uDC9E\uDC9F\uDCA2\uDCA5\uDCA6\uDCA9-\uDCAC\uDCAE-\uDCB9\uDCBB\uDCBD-\uDCC3\uDCC5-\uDCCF\uDD04\uDD05\uDD07-\uDD0A\uDD0D-\uDD14\uDD16-\uDD1C\uDD1E-\uDD39\uDD3B-\uDD3E\uDD40-\uDD44\uDD46\uDD4A-\uDD50\uDD52-\uDD6B]/g;
	var encodeMap = {'\xAD':'shy','\u200C':'zwnj','\u200D':'zwj','\u200E':'lrm','\u2063':'ic','\u2062':'it','\u2061':'af','\u200F':'rlm','\u200B':'ZeroWidthSpace','\u2060':'NoBreak','\u0311':'DownBreve','\u20DB':'tdot','\u20DC':'DotDot','\t':'Tab','\n':'NewLine','\u2008':'puncsp','\u205F':'MediumSpace','\u2009':'thinsp','\u200A':'hairsp','\u2004':'emsp13','\u2002':'ensp','\u2005':'emsp14','\u2003':'emsp','\u2007':'numsp','\xA0':'nbsp','\u205F\u200A':'ThickSpace','\u203E':'oline','_':'lowbar','\u2010':'dash','\u2013':'ndash','\u2014':'mdash','\u2015':'horbar',',':'comma',';':'semi','\u204F':'bsemi',':':'colon','\u2A74':'Colone','!':'excl','\xA1':'iexcl','?':'quest','\xBF':'iquest','.':'period','\u2025':'nldr','\u2026':'mldr','\xB7':'middot','\'':'apos','\u2018':'lsquo','\u2019':'rsquo','\u201A':'sbquo','\u2039':'lsaquo','\u203A':'rsaquo','"':'quot','\u201C':'ldquo','\u201D':'rdquo','\u201E':'bdquo','\xAB':'laquo','\xBB':'raquo','(':'lpar',')':'rpar','[':'lsqb',']':'rsqb','{':'lcub','}':'rcub','\u2308':'lceil','\u2309':'rceil','\u230A':'lfloor','\u230B':'rfloor','\u2985':'lopar','\u2986':'ropar','\u298B':'lbrke','\u298C':'rbrke','\u298D':'lbrkslu','\u298E':'rbrksld','\u298F':'lbrksld','\u2990':'rbrkslu','\u2991':'langd','\u2992':'rangd','\u2993':'lparlt','\u2994':'rpargt','\u2995':'gtlPar','\u2996':'ltrPar','\u27E6':'lobrk','\u27E7':'robrk','\u27E8':'lang','\u27E9':'rang','\u27EA':'Lang','\u27EB':'Rang','\u27EC':'loang','\u27ED':'roang','\u2772':'lbbrk','\u2773':'rbbrk','\u2016':'Vert','\xA7':'sect','\xB6':'para','@':'commat','*':'ast','/':'sol','undefined':null,'&':'amp','#':'num','%':'percnt','\u2030':'permil','\u2031':'pertenk','\u2020':'dagger','\u2021':'Dagger','\u2022':'bull','\u2043':'hybull','\u2032':'prime','\u2033':'Prime','\u2034':'tprime','\u2057':'qprime','\u2035':'bprime','\u2041':'caret','`':'grave','\xB4':'acute','\u02DC':'tilde','^':'Hat','\xAF':'macr','\u02D8':'breve','\u02D9':'dot','\xA8':'die','\u02DA':'ring','\u02DD':'dblac','\xB8':'cedil','\u02DB':'ogon','\u02C6':'circ','\u02C7':'caron','\xB0':'deg','\xA9':'copy','\xAE':'reg','\u2117':'copysr','\u2118':'wp','\u211E':'rx','\u2127':'mho','\u2129':'iiota','\u2190':'larr','\u219A':'nlarr','\u2192':'rarr','\u219B':'nrarr','\u2191':'uarr','\u2193':'darr','\u2194':'harr','\u21AE':'nharr','\u2195':'varr','\u2196':'nwarr','\u2197':'nearr','\u2198':'searr','\u2199':'swarr','\u219D':'rarrw','\u219D\u0338':'nrarrw','\u219E':'Larr','\u219F':'Uarr','\u21A0':'Rarr','\u21A1':'Darr','\u21A2':'larrtl','\u21A3':'rarrtl','\u21A4':'mapstoleft','\u21A5':'mapstoup','\u21A6':'map','\u21A7':'mapstodown','\u21A9':'larrhk','\u21AA':'rarrhk','\u21AB':'larrlp','\u21AC':'rarrlp','\u21AD':'harrw','\u21B0':'lsh','\u21B1':'rsh','\u21B2':'ldsh','\u21B3':'rdsh','\u21B5':'crarr','\u21B6':'cularr','\u21B7':'curarr','\u21BA':'olarr','\u21BB':'orarr','\u21BC':'lharu','\u21BD':'lhard','\u21BE':'uharr','\u21BF':'uharl','\u21C0':'rharu','\u21C1':'rhard','\u21C2':'dharr','\u21C3':'dharl','\u21C4':'rlarr','\u21C5':'udarr','\u21C6':'lrarr','\u21C7':'llarr','\u21C8':'uuarr','\u21C9':'rrarr','\u21CA':'ddarr','\u21CB':'lrhar','\u21CC':'rlhar','\u21D0':'lArr','\u21CD':'nlArr','\u21D1':'uArr','\u21D2':'rArr','\u21CF':'nrArr','\u21D3':'dArr','\u21D4':'iff','\u21CE':'nhArr','\u21D5':'vArr','\u21D6':'nwArr','\u21D7':'neArr','\u21D8':'seArr','\u21D9':'swArr','\u21DA':'lAarr','\u21DB':'rAarr','\u21DD':'zigrarr','\u21E4':'larrb','\u21E5':'rarrb','\u21F5':'duarr','\u21FD':'loarr','\u21FE':'roarr','\u21FF':'hoarr','\u2200':'forall','\u2201':'comp','\u2202':'part','\u2202\u0338':'npart','\u2203':'exist','\u2204':'nexist','\u2205':'empty','\u2207':'Del','\u2208':'in','\u2209':'notin','\u220B':'ni','\u220C':'notni','\u03F6':'bepsi','\u220F':'prod','\u2210':'coprod','\u2211':'sum','+':'plus','\xB1':'pm','\xF7':'div','\xD7':'times','<':'lt','\u226E':'nlt','<\u20D2':'nvlt','=':'equals','\u2260':'ne','=\u20E5':'bne','\u2A75':'Equal','>':'gt','\u226F':'ngt','>\u20D2':'nvgt','\xAC':'not','|':'vert','\xA6':'brvbar','\u2212':'minus','\u2213':'mp','\u2214':'plusdo','\u2044':'frasl','\u2216':'setmn','\u2217':'lowast','\u22

	var regexEscape = /["&'<>`]/g;
	var escapeMap = {
		'"': '&quot;',
		'&': '&amp;',
		'\'': '&#x27;',
		'<': '&lt;',
		// See https://mathiasbynens.be/notes/ambiguous-ampersands: in HTML, the
		// following is not strictly necessary unless it’s part of a tag or an
		// unquoted attribute value. We’re only escaping it to support those
		// situations, and for XML support.
		'>': '&gt;',
		// In Internet Explorer ≤ 8, the backtick character can be used
		// to break out of (un)quoted attribute values or HTML comments.
		// See http://html5sec.org/#102, http://html5sec.org/#108, and
		// http://html5sec.org/#133.
		'`': '&#x60;'
	};

	var regexInvalidEntity = /&#(?:[xX][^a-fA-F0-9]|[^0-9xX])/;
	var regexInvalidRawCodePoint = /[\0-\x08\x0B\x0E-\x1F\x7F-\x9F\uFDD0-\uFDEF\uFFFE\uFFFF]|[\uD83F\uD87F\uD8BF\uD8FF\uD93F\uD97F\uD9BF\uD9FF\uDA3F\uDA7F\uDABF\uDAFF\uDB3F\uDB7F\uDBBF\uDBFF][\uDFFE\uDFFF]|[\uD800-\uDBFF](?![\uDC00-\uDFFF])|(?:[^\uD800-\uDBFF]|^)[\uDC00-\uDFFF]/;
	var regexDecode = /&(CounterClockwiseContourIntegral|DoubleLongLeftRightArrow|ClockwiseContourIntegral|NotNestedGreaterGreater|NotSquareSupersetEqual|DiacriticalDoubleAcute|NotRightTriangleEqual|NotSucceedsSlantEqual|NotPrecedesSlantEqual|CloseCurlyDoubleQuote|NegativeVeryThinSpace|DoubleContourIntegral|FilledVerySmallSquare|CapitalDifferentialD|OpenCurlyDoubleQuote|EmptyVerySmallSquare|NestedGreaterGreater|DoubleLongRightArrow|NotLeftTriangleEqual|NotGreaterSlantEqual|ReverseUpEquilibrium|DoubleLeftRightArrow|NotSquareSubsetEqual|NotDoubleVerticalBar|RightArrowLeftArrow|NotGreaterFullEqual|NotRightTriangleBar|SquareSupersetEqual|DownLeftRightVector|DoubleLongLeftArrow|leftrightsquigarrow|LeftArrowRightArrow|NegativeMediumSpace|blacktriangleright|RightDownVectorBar|PrecedesSlantEqual|RightDoubleBracket|SucceedsSlantEqual|NotLeftTriangleBar|RightTriangleEqual|SquareIntersection|RightDownTeeVector|ReverseEquilibrium|NegativeThickSpace|longleftrightarrow|Longleftrightarrow|LongLeftRightArrow|DownRightTeeVector|DownRightVectorBar|GreaterSlantEqual|SquareSubsetEqual|LeftDownVectorBar|LeftDoubleBracket|VerticalSeparator|rightleftharpoons|NotGreaterGreater|NotSquareSuperset|blacktriangleleft|blacktriangledown|NegativeThinSpace|LeftDownTeeVector|NotLessSlantEqual|leftrightharpoons|DoubleUpDownArrow|DoubleVerticalBar|LeftTriangleEqual|FilledSmallSquare|twoheadrightarrow|NotNestedLessLess|DownLeftTeeVector|DownLeftVectorBar|RightAngleBracket|NotTildeFullEqual|NotReverseElement|RightUpDownVector|DiacriticalTilde|NotSucceedsTilde|circlearrowright|NotPrecedesEqual|rightharpoondown|DoubleRightArrow|NotSucceedsEqual|NonBreakingSpace|NotRightTriangle|LessEqualGreater|RightUpTeeVector|LeftAngleBracket|GreaterFullEqual|DownArrowUpArrow|RightUpVectorBar|twoheadleftarrow|GreaterEqualLess|downharpoonright|RightTriangleBar|ntrianglerighteq|NotSupersetEqual|LeftUpDownVector|DiacriticalAcute|rightrightarrows|vartriangleright|UpArrowDownArrow|DiacriticalGrave|UnderParenthesis|EmptySmallSquare|LeftUpVectorBar|leftrightarrows|DownRightVector|downharpoonleft|trianglerighteq|ShortRightArrow|OverParenthesis|DoubleLeftArrow|DoubleDownArrow|NotSquareSubset|bigtriangledown|ntrianglelefteq|UpperRightArrow|curvearrowright|vartriangleleft|NotLeftTriangle|nleftrightarrow|LowerRightArrow|NotHumpDownHump|NotGreaterTilde|rightthreetimes|LeftUpTeeVector|NotGreaterEqual|straightepsilon|LeftTriangleBar|rightsquigarrow|ContourIntegral|rightleftarrows|CloseCurlyQuote|RightDownVector|LeftRightVector|nLeftrightarrow|leftharpoondown|circlearrowleft|SquareSuperset|OpenCurlyQuote|hookrightarrow|HorizontalLine|DiacriticalDot|NotLessGreater|ntriangleright|DoubleRightTee|InvisibleComma|InvisibleTimes|LowerLeftArrow|DownLeftVector|NotSubsetEqual|curvearrowleft|trianglelefteq|NotVerticalBar|TildeFullEqual|downdownarrows|NotGreaterLess|RightTeeVector|ZeroWidthSpace|looparrowright|LongRightArrow|doublebarwedge|ShortLeftArrow|ShortDownArrow|RightVectorBar|GreaterGreater|ReverseElement|rightharpoonup|LessSlantEqual|leftthreetimes|upharpoonright|rightarrowtail|LeftDownVector|Longrightarrow|NestedLessLess|UpperLeftArrow|nshortparallel|leftleftarrows|leftrightarrow|Leftrightarrow|LeftRightArrow|longrightarrow|upharpoonleft|RightArrowBar|ApplyFunction|LeftTeeVector|leftarrowtail|NotEqualTilde|varsubsetneqq|varsupsetneqq|RightTeeArrow|SucceedsEqual|SucceedsTilde|LeftVectorBar|SupersetEqual|hookleftarrow|DifferentialD|VerticalTilde|VeryThinSpace|blacktriangle|bigtriangleup|LessFullEqual|divideontimes|leftharpoonup|UpEquilibrium|ntriangleleft|RightTriangle|measuredangle|shortparallel|longleftarrow|Longleftarrow|LongLeftArrow|DoubleLeftTee|Poincareplane|PrecedesEqual|triangleright|DoubleUpArrow|RightUpVector|fallingdotseq|looparrowleft|PrecedesTilde|NotTildeEqual|NotTildeTilde|smallsetminus|Proportional|triangleleft|triangledown|UnderBracket|NotHumpEqual|exponentiale|ExponentialE|NotLessTilde|HilbertSpace|RightCeiling|blacklozenge|varsupsetneq|HumpDownHump|GreaterEqual|VerticalLine|LeftTeeArrow|NotLessEqual|DownTeeArrow|LeftTriangle|varsubsetneq|Intersection|NotCongruent|DownArrowBar|
	var decodeMap = {'aacute':'\xE1','Aacute':'\xC1','abreve':'\u0103','Abreve':'\u0102','ac':'\u223E','acd':'\u223F','acE':'\u223E\u0333','acirc':'\xE2','Acirc':'\xC2','acute':'\xB4','acy':'\u0430','Acy':'\u0410','aelig':'\xE6','AElig':'\xC6','af':'\u2061','afr':'\uD835\uDD1E','Afr':'\uD835\uDD04','agrave':'\xE0','Agrave':'\xC0','alefsym':'\u2135','aleph':'\u2135','alpha':'\u03B1','Alpha':'\u0391','amacr':'\u0101','Amacr':'\u0100','amalg':'\u2A3F','amp':'&','AMP':'&','and':'\u2227','And':'\u2A53','andand':'\u2A55','andd':'\u2A5C','andslope':'\u2A58','andv':'\u2A5A','ang':'\u2220','ange':'\u29A4','angle':'\u2220','angmsd':'\u2221','angmsdaa':'\u29A8','angmsdab':'\u29A9','angmsdac':'\u29AA','angmsdad':'\u29AB','angmsdae':'\u29AC','angmsdaf':'\u29AD','angmsdag':'\u29AE','angmsdah':'\u29AF','angrt':'\u221F','angrtvb':'\u22BE','angrtvbd':'\u299D','angsph':'\u2222','angst':'\xC5','angzarr':'\u237C','aogon':'\u0105','Aogon':'\u0104','aopf':'\uD835\uDD52','Aopf':'\uD835\uDD38','ap':'\u2248','apacir':'\u2A6F','ape':'\u224A','apE':'\u2A70','apid':'\u224B','apos':'\'','ApplyFunction':'\u2061','approx':'\u2248','approxeq':'\u224A','aring':'\xE5','Aring':'\xC5','ascr':'\uD835\uDCB6','Ascr':'\uD835\uDC9C','Assign':'\u2254','ast':'*','asymp':'\u2248','asympeq':'\u224D','atilde':'\xE3','Atilde':'\xC3','auml':'\xE4','Auml':'\xC4','awconint':'\u2233','awint':'\u2A11','backcong':'\u224C','backepsilon':'\u03F6','backprime':'\u2035','backsim':'\u223D','backsimeq':'\u22CD','Backslash':'\u2216','Barv':'\u2AE7','barvee':'\u22BD','barwed':'\u2305','Barwed':'\u2306','barwedge':'\u2305','bbrk':'\u23B5','bbrktbrk':'\u23B6','bcong':'\u224C','bcy':'\u0431','Bcy':'\u0411','bdquo':'\u201E','becaus':'\u2235','because':'\u2235','Because':'\u2235','bemptyv':'\u29B0','bepsi':'\u03F6','bernou':'\u212C','Bernoullis':'\u212C','beta':'\u03B2','Beta':'\u0392','beth':'\u2136','between':'\u226C','bfr':'\uD835\uDD1F','Bfr':'\uD835\uDD05','bigcap':'\u22C2','bigcirc':'\u25EF','bigcup':'\u22C3','bigodot':'\u2A00','bigoplus':'\u2A01','bigotimes':'\u2A02','bigsqcup':'\u2A06','bigstar':'\u2605','bigtriangledown':'\u25BD','bigtriangleup':'\u25B3','biguplus':'\u2A04','bigvee':'\u22C1','bigwedge':'\u22C0','bkarow':'\u290D','blacklozenge':'\u29EB','blacksquare':'\u25AA','blacktriangle':'\u25B4','blacktriangledown':'\u25BE','blacktriangleleft':'\u25C2','blacktriangleright':'\u25B8','blank':'\u2423','blk12':'\u2592','blk14':'\u2591','blk34':'\u2593','block':'\u2588','bne':'=\u20E5','bnequiv':'\u2261\u20E5','bnot':'\u2310','bNot':'\u2AED','bopf':'\uD835\uDD53','Bopf':'\uD835\uDD39','bot':'\u22A5','bottom':'\u22A5','bowtie':'\u22C8','boxbox':'\u29C9','boxdl':'\u2510','boxdL':'\u2555','boxDl':'\u2556','boxDL':'\u2557','boxdr':'\u250C','boxdR':'\u2552','boxDr':'\u2553','boxDR':'\u2554','boxh':'\u2500','boxH':'\u2550','boxhd':'\u252C','boxhD':'\u2565','boxHd':'\u2564','boxHD':'\u2566','boxhu':'\u2534','boxhU':'\u2568','boxHu':'\u2567','boxHU':'\u2569','boxminus':'\u229F','boxplus':'\u229E','boxtimes':'\u22A0','boxul':'\u2518','boxuL':'\u255B','boxUl':'\u255C','boxUL':'\u255D','boxur':'\u2514','boxuR':'\u2558','boxUr':'\u2559','boxUR':'\u255A','boxv':'\u2502','boxV':'\u2551','boxvh':'\u253C','boxvH':'\u256A','boxVh':'\u256B','boxVH':'\u256C','boxvl':'\u2524','boxvL':'\u2561','boxVl':'\u2562','boxVL':'\u2563','boxvr':'\u251C','boxvR':'\u255E','boxVr':'\u255F','boxVR':'\u2560','bprime':'\u2035','breve':'\u02D8','Breve':'\u02D8','brvbar':'\xA6','bscr':'\uD835\uDCB7','Bscr':'\u212C','bsemi':'\u204F','bsim':'\u223D','bsime':'\u22CD','bsol':'\\','bsolb':'\u29C5','bsolhsub':'\u27C8','bull':'\u2022','bullet':'\u2022','bump':'\u224E','bumpe':'\u224F','bumpE':'\u2AAE','bumpeq':'\u224F','Bumpeq':'\u224E','cacute':'\u0107','Cacute':'\u0106','cap':'\u2229','Cap':'\u22D2','capand':'\u2A44','capbrcup':'\u2A49','capcap':'\u2A4B','capcup':'\u2A47','capdot':'\u2A40','CapitalDifferentialD':'\u2145','caps':'\u2229\uFE00','caret':'\u2041','caron':'\u02C7','Cayleys':'\u212D','ccaps':'\u2A4D','ccaron':'\u010D','Ccaron':'\u010C','ccedil':'\xE7','Ccedil':'\xC7','ccirc':'\u0109','Ccirc':'\u0108','Cconint':'\
	var decodeMapLegacy = {'aacute':'\xE1','Aacute':'\xC1','acirc':'\xE2','Acirc':'\xC2','acute':'\xB4','aelig':'\xE6','AElig':'\xC6','agrave':'\xE0','Agrave':'\xC0','amp':'&','AMP':'&','aring':'\xE5','Aring':'\xC5','atilde':'\xE3','Atilde':'\xC3','auml':'\xE4','Auml':'\xC4','brvbar':'\xA6','ccedil':'\xE7','Ccedil':'\xC7','cedil':'\xB8','cent':'\xA2','copy':'\xA9','COPY':'\xA9','curren':'\xA4','deg':'\xB0','divide':'\xF7','eacute':'\xE9','Eacute':'\xC9','ecirc':'\xEA','Ecirc':'\xCA','egrave':'\xE8','Egrave':'\xC8','eth':'\xF0','ETH':'\xD0','euml':'\xEB','Euml':'\xCB','frac12':'\xBD','frac14':'\xBC','frac34':'\xBE','gt':'>','GT':'>','iacute':'\xED','Iacute':'\xCD','icirc':'\xEE','Icirc':'\xCE','iexcl':'\xA1','igrave':'\xEC','Igrave':'\xCC','iquest':'\xBF','iuml':'\xEF','Iuml':'\xCF','laquo':'\xAB','lt':'<','LT':'<','macr':'\xAF','micro':'\xB5','middot':'\xB7','nbsp':'\xA0','not':'\xAC','ntilde':'\xF1','Ntilde':'\xD1','oacute':'\xF3','Oacute':'\xD3','ocirc':'\xF4','Ocirc':'\xD4','ograve':'\xF2','Ograve':'\xD2','ordf':'\xAA','ordm':'\xBA','oslash':'\xF8','Oslash':'\xD8','otilde':'\xF5','Otilde':'\xD5','ouml':'\xF6','Ouml':'\xD6','para':'\xB6','plusmn':'\xB1','pound':'\xA3','quot':'"','QUOT':'"','raquo':'\xBB','reg':'\xAE','REG':'\xAE','sect':'\xA7','shy':'\xAD','sup1':'\xB9','sup2':'\xB2','sup3':'\xB3','szlig':'\xDF','thorn':'\xFE','THORN':'\xDE','times':'\xD7','uacute':'\xFA','Uacute':'\xDA','ucirc':'\xFB','Ucirc':'\xDB','ugrave':'\xF9','Ugrave':'\xD9','uml':'\xA8','uuml':'\xFC','Uuml':'\xDC','yacute':'\xFD','Yacute':'\xDD','yen':'\xA5','yuml':'\xFF'};
	var decodeMapNumeric = {'0':'\uFFFD','128':'\u20AC','130':'\u201A','131':'\u0192','132':'\u201E','133':'\u2026','134':'\u2020','135':'\u2021','136':'\u02C6','137':'\u2030','138':'\u0160','139':'\u2039','140':'\u0152','142':'\u017D','145':'\u2018','146':'\u2019','147':'\u201C','148':'\u201D','149':'\u2022','150':'\u2013','151':'\u2014','152':'\u02DC','153':'\u2122','154':'\u0161','155':'\u203A','156':'\u0153','158':'\u017E','159':'\u0178'};
	var invalidReferenceCodePoints = [1,2,3,4,5,6,7,8,11,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,64976,64977,64978,64979,64980,64981,64982,64983,64984,64985,64986,64987,64988,64989,64990,64991,64992,64993,64994,64995,64996,64997,64998,64999,65000,65001,65002,65003,65004,65005,65006,65007,65534,65535,131070,131071,196606,196607,262142,262143,327678,327679,393214,393215,458750,458751,524286,524287,589822,589823,655358,655359,720894,720895,786430,786431,851966,851967,917502,917503,983038,983039,1048574,1048575,1114110,1114111];

	/*--------------------------------------------------------------------------*/

	var stringFromCharCode = String.fromCharCode;

	var object = {};
	var hasOwnProperty = object.hasOwnProperty;
	var has = function(object, propertyName) {
		return hasOwnProperty.call(object, propertyName);
	};

	var contains = function(array, value) {
		var index = -1;
		var length = array.length;
		while (++index < length) {
			if (array[index] == value) {
				return true;
			}
		}
		return false;
	};

	var merge = function(options, defaults) {
		if (!options) {
			return defaults;
		}
		var result = {};
		var key;
		for (key in defaults) {
			// A `hasOwnProperty` check is not needed here, since only recognized
			// option names are used anyway. Any others are ignored.
			result[key] = has(options, key) ? options[key] : defaults[key];
		}
		return result;
	};

	// Modified version of `ucs2encode`; see https://mths.be/punycode.
	var codePointToSymbol = function(codePoint, strict) {
		var output = '';
		if ((codePoint >= 0xD800 && codePoint <= 0xDFFF) || codePoint > 0x10FFFF) {
			// See issue #4:
			// “Otherwise, if the number is in the range 0xD800 to 0xDFFF or is
			// greater than 0x10FFFF, then this is a parse error. Return a U+FFFD
			// REPLACEMENT CHARACTER.”
			if (strict) {
				parseError('character reference outside the permissible Unicode range');
			}
			return '\uFFFD';
		}
		if (has(decodeMapNumeric, codePoint)) {
			if (strict) {
				parseError('disallowed character reference');
			}
			return decodeMapNumeric[codePoint];
		}
		if (strict && contains(invalidReferenceCodePoints, codePoint)) {
			parseError('disallowed character reference');
		}
		if (codePoint > 0xFFFF) {
			codePoint -= 0x10000;
			output += stringFromCharCode(codePoint >>> 10 & 0x3FF | 0xD800);
			codePoint = 0xDC00 | codePoint & 0x3FF;
		}
		output += stringFromCharCode(codePoint);
		return output;
	};

	var hexEscape = function(codePoint) {
		return '&#x' + codePoint.toString(16).toUpperCase() + ';';
	};

	var decEscape = function(codePoint) {
		return '&#' + codePoint + ';';
	};

	var parseError = function(message) {
		throw Error('Parse error: ' + message);
	};

	/*--------------------------------------------------------------------------*/

	var encode = function(string, options) {
		options = merge(options, encode.options);
		var strict = options.strict;
		if (strict && regexInvalidRawCodePoint.test(string)) {
			parseError('forbidden code point');
		}
		var encodeEverything = options.encodeEverything;
		var useNamedReferences = options.useNamedReferences;
		var allowUnsafeSymbols = options.allowUnsafeSymbols;
		var escapeCodePoint = options.decimal ? decEscape : hexEscape;

		var escapeBmpSymbol = function(symbol) {
			return escapeCodePoint(symbol.charCodeAt(0));
		};

		if (encodeEverything) {
			// Encode ASCII symbols.
			string = string.replace(regexAsciiWhitelist, function(symbol) {
				// Use named references if requested & possible.
				if (useNamedReferences && has(encodeMap, symbol)) {
					return '&' + encodeMap[symbol] + ';';
				}
				return escapeBmpSymbol(symbol);
			});
			// Shorten a few escapes that represent two symbols, of which at least one
			// is within the ASCII range.
			if (useNamedReferences) {
				string = string
					.replace(/&gt;\u20D2/g, '&nvgt;')
					.replace(/&lt;\u20D2/g, '&nvlt;')
					.replace(/&#x66;&#x6A;/g, '&fjlig;');
			}
			// Encode non-ASCII symbols.
			if (useNamedReferences) {
				// Encode non-ASCII symbols that can be replaced with a named reference.
				string = string.replace(regexEncodeNonAscii, function(string) {
					// Note: there is no need to check `has(encodeMap, string)` here.
					return '&' + encodeMap[string] + ';';
				});
			}
			// Note: any remaining non-ASCII symbols are handled outside of the `if`.
		} else if (useNamedReferences) {
			// Apply named character references.
			// Encode `<>"'&` using named character references.
			if (!allowUnsafeSymbols) {
				string = string.replace(regexEscape, function(string) {
					return '&' + encodeMap[string] + ';'; // no need to check `has()` here
				});
			}
			// Shorten escapes that represent two symbols, of which at least one is
			// `<>"'&`.
			string = string
				.replace(/&gt;\u20D2/g, '&nvgt;')
				.replace(/&lt;\u20D2/g, '&nvlt;');
			// Encode non-ASCII symbols that can be replaced with a named reference.
			string = string.replace(regexEncodeNonAscii, function(string) {
				// Note: there is no need to check `has(encodeMap, string)` here.
				return '&' + encodeMap[string] + ';';
			});
		} else if (!allowUnsafeSymbols) {
			// Encode `<>"'&` using hexadecimal escapes, now that they’re not handled
			// using named character references.
			string = string.replace(regexEscape, escapeBmpSymbol);
		}
		return string
			// Encode astral symbols.
			.replace(regexAstralSymbols, function($0) {
				// https://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
				var high = $0.charCodeAt(0);
				var low = $0.charCodeAt(1);
				var codePoint = (high - 0xD800) * 0x400 + low - 0xDC00 + 0x10000;
				return escapeCodePoint(codePoint);
			})
			// Encode any remaining BMP symbols that are not printable ASCII symbols
			// using a hexadecimal escape.
			.replace(regexBmpWhitelist, escapeBmpSymbol);
	};
	// Expose default options (so they can be overridden globally).
	encode.options = {
		'allowUnsafeSymbols': false,
		'encodeEverything': false,
		'strict': false,
		'useNamedReferences': false,
		'decimal' : false
	};

	var decode = function(html, options) {
		options = merge(options, decode.options);
		var strict = options.strict;
		if (strict && regexInvalidEntity.test(html)) {
			parseError('malformed character reference');
		}
		return html.replace(regexDecode, function($0, $1, $2, $3, $4, $5, $6, $7, $8) {
			var codePoint;
			var semicolon;
			var decDigits;
			var hexDigits;
			var reference;
			var next;

			if ($1) {
				reference = $1;
				// Note: there is no need to check `has(decodeMap, reference)`.
				return decodeMap[reference];
			}

			if ($2) {
				// Decode named character references without trailing `;`, e.g. `&amp`.
				// This is only a parse error if it gets converted to `&`, or if it is
				// followed by `=` in an attribute context.
				reference = $2;
				next = $3;
				if (next && options.isAttributeValue) {
					if (strict && next == '=') {
						parseError('`&` did not start a character reference');
					}
					return $0;
				} else {
					if (strict) {
						parseError(
							'named character reference was not terminated by a semicolon'
						);
					}
					// Note: there is no need to check `has(decodeMapLegacy, reference)`.
					return decodeMapLegacy[reference] + (next || '');
				}
			}

			if ($4) {
				// Decode decimal escapes, e.g. `&#119558;`.
				decDigits = $4;
				semicolon = $5;
				if (strict && !semicolon) {
					parseError('character reference was not terminated by a semicolon');
				}
				codePoint = parseInt(decDigits, 10);
				return codePointToSymbol(codePoint, strict);
			}

			if ($6) {
				// Decode hexadecimal escapes, e.g. `&#x1D306;`.
				hexDigits = $6;
				semicolon = $7;
				if (strict && !semicolon) {
					parseError('character reference was not terminated by a semicolon');
				}
				codePoint = parseInt(hexDigits, 16);
				return codePointToSymbol(codePoint, strict);
			}

			// If we’re still here, `if ($7)` is implied; it’s an ambiguous
			// ampersand for sure. https://mths.be/notes/ambiguous-ampersands
			if (strict) {
				parseError(
					'named character reference was not terminated by a semicolon'
				);
			}
			return $0;
		});
	};
	// Expose default options (so they can be overridden globally).
	decode.options = {
		'isAttributeValue': false,
		'strict': false
	};

	var escape = function(string) {
		return string.replace(regexEscape, function($0) {
			// Note: there is no need to check `has(escapeMap, $0)` here.
			return escapeMap[$0];
		});
	};

	/*--------------------------------------------------------------------------*/

	var he = {
		'version': '1.2.0',
		'encode': encode,
		'decode': decode,
		'escape': escape,
		'unescape': decode
	};

	// Some AMD build optimizers, like r.js, check for specific condition patterns
	// like the following:
	if (
		false
	) {
		define(function() {
			return he;
		});
	}	else if (freeExports && !freeExports.nodeType) {
		if (freeModule) { // in Node.js, io.js, or RingoJS v0.8.0+
			freeModule.exports = he;
		} else { // in Narwhal or RingoJS v0.7.0-
			for (var key in he) {
				has(he, key) && (freeExports[key] = he[key]);
			}
		}
	} else { // in Rhino or a web browser
		root.he = he;
	}

}(this));

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],55:[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
}

},{}],56:[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
  }
}

},{}],57:[function(require,module,exports){
/*!
 * Determine if an object is a Buffer
 *
 * @author   Feross Aboukhadijeh <https://feross.org>
 * @license  MIT
 */

// The _isBuffer check is for Safari 5-7 support, because it's missing
// Object.prototype.constructor. Remove this eventually
module.exports = function (obj) {
  return obj != null && (isBuffer(obj) || isSlowBuffer(obj) || !!obj._isBuffer)
}

function isBuffer (obj) {
  return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj)
}

// For Node v0.10 support. Remove this eventually.
function isSlowBuffer (obj) {
  return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isBuffer(obj.slice(0, 0))
}

},{}],58:[function(require,module,exports){
var toString = {}.toString;

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

},{}],59:[function(require,module,exports){
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
    }
    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':
                if (path.dirname(p) === p) return cb(er);
                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
    }
    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;
};

},{"fs":42,"path":42}],60:[function(require,module,exports){
/**
 * Helpers.
 */

var s = 1000;
var m = s * 60;
var h = m * 60;
var d = h * 24;
var w = d * 7;
var y = d * 365.25;

/**
 * Parse or format the given `val`.
 *
 * Options:
 *
 *  - `long` verbose formatting [false]
 *
 * @param {String|Number} val
 * @param {Object} [options]
 * @throws {Error} throw an error if val is not a non-empty string or a number
 * @return {String|Number}
 * @api public
 */

module.exports = function(val, options) {
  options = options || {};
  var type = typeof val;
  if (type === 'string' && val.length > 0) {
    return parse(val);
  } else if (type === 'number' && isNaN(val) === false) {
    return options.long ? fmtLong(val) : fmtShort(val);
  }
  throw new Error(
    'val is not a non-empty string or a valid number. val=' +
      JSON.stringify(val)
  );
};

/**
 * Parse the given `str` and return milliseconds.
 *
 * @param {String} str
 * @return {Number}
 * @api private
 */

function parse(str) {
  str = String(str);
  if (str.length > 100) {
    return;
  }
  var match = /^((?:\d+)?\-?\d?\.?\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|weeks?|w|years?|yrs?|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 'yrs':
    case 'yr':
    case 'y':
      return n * y;
    case 'weeks':
    case 'week':
    case 'w':
      return n * w;
    case 'days':
    case 'day':
    case 'd':
      return n * d;
    case 'hours':
    case 'hour':
    case 'hrs':
    case 'hr':
    case 'h':
      return n * h;
    case 'minutes':
    case 'minute':
    case 'mins':
    case 'min':
    case 'm':
      return n * m;
    case 'seconds':
    case 'second':
    case 'secs':
    case 'sec':
    case 's':
      return n * s;
    case 'milliseconds':
    case 'millisecond':
    case 'msecs':
    case 'msec':
    case 'ms':
      return n;
    default:
      return undefined;
  }
}

/**
 * Short format for `ms`.
 *
 * @param {Number} ms
 * @return {String}
 * @api private
 */

function fmtShort(ms) {
  var msAbs = Math.abs(ms);
  if (msAbs >= d) {
    return Math.round(ms / d) + 'd';
  }
  if (msAbs >= h) {
    return Math.round(ms / h) + 'h';
  }
  if (msAbs >= m) {
    return Math.round(ms / m) + 'm';
  }
  if (msAbs >= s) {
    return Math.round(ms / s) + 's';
  }
  return ms + 'ms';
}

/**
 * Long format for `ms`.
 *
 * @param {Number} ms
 * @return {String}
 * @api private
 */

function fmtLong(ms) {
  var msAbs = Math.abs(ms);
  if (msAbs >= d) {
    return plural(ms, msAbs, d, 'day');
  }
  if (msAbs >= h) {
    return plural(ms, msAbs, h, 'hour');
  }
  if (msAbs >= m) {
    return plural(ms, msAbs, m, 'minute');
  }
  if (msAbs >= s) {
    return plural(ms, msAbs, s, 'second');
  }
  return ms + ' ms';
}

/**
 * Pluralization helper.
 */

function plural(ms, msAbs, n, name) {
  var isPlural = msAbs >= n * 1.5;
  return Math.round(ms / n) + ' ' + name + (isPlural ? 's' : '');
}

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

var keysShim;
if (!Object.keys) {
	// modified from https://github.com/es-shims/es5-shim
	var has = Object.prototype.hasOwnProperty;
	var toStr = Object.prototype.toString;
	var isArgs = require('./isArguments'); // eslint-disable-line global-require
	var isEnumerable = Object.prototype.propertyIsEnumerable;
	var hasDontEnumBug = !isEnumerable.call({ toString: null }, 'toString');
	var hasProtoEnumBug = isEnumerable.call(function () {}, 'prototype');
	var dontEnums = [
		'toString',
		'toLocaleString',
		'valueOf',
		'hasOwnProperty',
		'isPrototypeOf',
		'propertyIsEnumerable',
		'constructor'
	];
	var equalsConstructorPrototype = function (o) {
		var ctor = o.constructor;
		return ctor && ctor.prototype === o;
	};
	var excludedKeys = {
		$applicationCache: true,
		$console: true,
		$external: true,
		$frame: true,
		$frameElement: true,
		$frames: true,
		$innerHeight: true,
		$innerWidth: true,
		$outerHeight: true,
		$outerWidth: true,
		$pageXOffset: true,
		$pageYOffset: true,
		$parent: true,
		$scrollLeft: true,
		$scrollTop: true,
		$scrollX: true,
		$scrollY: true,
		$self: true,
		$webkitIndexedDB: true,
		$webkitStorageInfo: true,
		$window: true
	};
	var hasAutomationEqualityBug = (function () {
		/* global window */
		if (typeof window === 'undefined') { return false; }
		for (var k in window) {
			try {
				if (!excludedKeys['$' + k] && has.call(window, k) && window[k] !== null && typeof window[k] === 'object') {
					try {
						equalsConstructorPrototype(window[k]);
					} catch (e) {
						return true;
					}
				}
			} catch (e) {
				return true;
			}
		}
		return false;
	}());
	var equalsConstructorPrototypeIfNotBuggy = function (o) {
		/* global window */
		if (typeof window === 'undefined' || !hasAutomationEqualityBug) {
			return equalsConstructorPrototype(o);
		}
		try {
			return equalsConstructorPrototype(o);
		} catch (e) {
			return false;
		}
	};

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

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

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

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

		if (hasDontEnumBug) {
			var skipConstructor = equalsConstructorPrototypeIfNotBuggy(object);

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

},{"./isArguments":63}],62:[function(require,module,exports){
'use strict';

var slice = Array.prototype.slice;
var isArgs = require('./isArguments');

var origKeys = Object.keys;
var keysShim = origKeys ? function keys(o) { return origKeys(o); } : require('./implementation');

var originalKeys = Object.keys;

keysShim.shim = function shimObjectKeys() {
	if (Object.keys) {
		var keysWorksWithArguments = (function () {
			// Safari 5.0 bug
			var args = Object.keys(arguments);
			return args && args.length === arguments.length;
		}(1, 2));
		if (!keysWorksWithArguments) {
			Object.keys = function keys(object) { // eslint-disable-line func-name-matching
				if (isArgs(object)) {
					return originalKeys(slice.call(object));
				}
				return originalKeys(object);
			};
		}
	} else {
		Object.keys = keysShim;
	}
	return Object.keys || keysShim;
};

module.exports = keysShim;

},{"./implementation":61,"./isArguments":63}],63:[function(require,module,exports){
'use strict';

var toStr = Object.prototype.toString;

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

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

// modified from https://github.com/es-shims/es6-shim
var keys = require('object-keys');
var bind = require('function-bind');
var canBeObject = function (obj) {
	return typeof obj !== 'undefined' && obj !== null;
};
var hasSymbols = require('has-symbols/shams')();
var toObject = Object;
var push = bind.call(Function.call, Array.prototype.push);
var propIsEnumerable = bind.call(Function.call, Object.prototype.propertyIsEnumerable);
var originalGetSymbols = hasSymbols ? Object.getOwnPropertySymbols : null;

module.exports = function assign(target, source1) {
	if (!canBeObject(target)) { throw new TypeError('target must be an object'); }
	var objTarget = toObject(target);
	var s, source, i, props, syms, value, key;
	for (s = 1; s < arguments.length; ++s) {
		source = toObject(arguments[s]);
		props = keys(source);
		var getSymbols = hasSymbols && (Object.getOwnPropertySymbols || originalGetSymbols);
		if (getSymbols) {
			syms = getSymbols(source);
			for (i = 0; i < syms.length; ++i) {
				key = syms[i];
				if (propIsEnumerable(source, key)) {
					push(props, key);
				}
			}
		}
		for (i = 0; i < props.length; ++i) {
			key = props[i];
			value = source[key];
			if (propIsEnumerable(source, key)) {
				objTarget[key] = value;
			}
		}
	}
	return objTarget;
};

},{"function-bind":52,"has-symbols/shams":53,"object-keys":62}],65:[function(require,module,exports){
'use strict';

var defineProperties = require('define-properties');

var implementation = require('./implementation');
var getPolyfill = require('./polyfill');
var shim = require('./shim');

var polyfill = getPolyfill();

defineProperties(polyfill, {
	getPolyfill: getPolyfill,
	implementation: implementation,
	shim: shim
});

module.exports = polyfill;

},{"./implementation":64,"./polyfill":66,"./shim":67,"define-properties":47}],66:[function(require,module,exports){
'use strict';

var implementation = require('./implementation');

var lacksProperEnumerationOrder = function () {
	if (!Object.assign) {
		return false;
	}
	// v8, specifically in node 4.x, has a bug with incorrect property enumeration order
	// note: this does not detect the bug unless there's 20 characters
	var str = 'abcdefghijklmnopqrst';
	var letters = str.split('');
	var map = {};
	for (var i = 0; i < letters.length; ++i) {
		map[letters[i]] = letters[i];
	}
	var obj = Object.assign({}, map);
	var actual = '';
	for (var k in obj) {
		actual += k;
	}
	return str !== actual;
};

var assignHasPendingExceptions = function () {
	if (!Object.assign || !Object.preventExtensions) {
		return false;
	}
	// Firefox 37 still has "pending exception" logic in its Object.assign implementation,
	// which is 72% slower than our shim, and Firefox 40's native implementation.
	var thrower = Object.preventExtensions({ 1: 2 });
	try {
		Object.assign(thrower, 'xy');
	} catch (e) {
		return thrower[1] === 'y';
	}
	return false;
};

module.exports = function getPolyfill() {
	if (!Object.assign) {
		return implementation;
	}
	if (lacksProperEnumerationOrder()) {
		return implementation;
	}
	if (assignHasPendingExceptions()) {
		return implementation;
	}
	return Object.assign;
};

},{"./implementation":64}],67:[function(require,module,exports){
'use strict';

var define = require('define-properties');
var getPolyfill = require('./polyfill');

module.exports = function shimAssign() {
	var polyfill = getPolyfill();
	define(
		Object,
		{ assign: polyfill },
		{ assign: function () { return Object.assign !== polyfill; } }
	);
	return polyfill;
};

},{"./polyfill":66,"define-properties":47}],68:[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: nextTick };
} else {
  module.exports = process
}

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":69}],69:[function(require,module,exports){
// shim for using process in browser
var process = module.exports = {};

// cached from whatever global is present so that test runners that stub it
// don't break things.  But we need to wrap it in a try catch in case it is
// wrapped in strict mode code which doesn't define any globals.  It's inside a
// function because try/catches deoptimize in certain engines.

var cachedSetTimeout;
var cachedClearTimeout;

function defaultSetTimout() {
    throw new Error('setTimeout has not been defined');
}
function defaultClearTimeout () {
    throw new Error('clearTimeout has not been defined');
}
(function () {
    try {
        if (typeof setTimeout === 'function') {
            cachedSetTimeout = setTimeout;
        } else {
            cachedSetTimeout = defaultSetTimout;
        }
    } catch (e) {
        cachedSetTimeout = defaultSetTimout;
    }
    try {
        if (typeof clearTimeout === 'function') {
            cachedClearTimeout = clearTimeout;
        } else {
            cachedClearTimeout = defaultClearTimeout;
        }
    } catch (e) {
        cachedClearTimeout = defaultClearTimeout;
    }
} ())
function runTimeout(fun) {
    if (cachedSetTimeout === setTimeout) {
        //normal enviroments in sane situations
        return setTimeout(fun, 0);
    }
    // if setTimeout wasn't available but was latter defined
    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
        cachedSetTimeout = setTimeout;
        return setTimeout(fun, 0);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedSetTimeout(fun, 0);
    } catch(e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
            return cachedSetTimeout.call(null, fun, 0);
        } catch(e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
            return cachedSetTimeout.call(this, fun, 0);
        }
    }


}
function runClearTimeout(marker) {
    if (cachedClearTimeout === clearTimeout) {
        //normal enviroments in sane situations
        return clearTimeout(marker);
    }
    // if clearTimeout wasn't available but was latter defined
    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
        cachedClearTimeout = clearTimeout;
        return clearTimeout(marker);
    }
    try {
        // when when somebody has screwed with setTimeout but no I.E. maddness
        return cachedClearTimeout(marker);
    } catch (e){
        try {
            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
            return cachedClearTimeout.call(null, marker);
        } catch (e){
            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
            return cachedClearTimeout.call(this, marker);
        }
    }



}
var queue = [];
var draining = false;
var currentQueue;
var queueIndex = -1;

function cleanUpNextTick() {
    if (!draining || !currentQueue) {
        return;
    }
    draining = false;
    if (currentQueue.length) {
        queue = currentQueue.concat(queue);
    } else {
        queueIndex = -1;
    }
    if (queue.length) {
        drainQueue();
    }
}

function drainQueue() {
    if (draining) {
        return;
    }
    var timeout = runTimeout(cleanUpNextTick);
    draining = true;

    var len = queue.length;
    while(len) {
        currentQueue = queue;
        queue = [];
        while (++queueIndex < len) {
            if (currentQueue) {
                currentQueue[queueIndex].run();
            }
        }
        queueIndex = -1;
        len = queue.length;
    }
    currentQueue = null;
    draining = false;
    runClearTimeout(timeout);
}

process.nextTick = function (fun) {
    var args = new Array(arguments.length - 1);
    if (arguments.length > 1) {
        for (var i = 1; i < arguments.length; i++) {
            args[i - 1] = arguments[i];
        }
    }
    queue.push(new Item(fun, args));
    if (queue.length === 1 && !draining) {
        runTimeout(drainQueue);
    }
};

// v8 likes predictible objects
function Item(fun, array) {
    this.fun = fun;
    this.array = array;
}
Item.prototype.run = function () {
    this.fun.apply(null, this.array);
};
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.version = ''; // empty string to avoid regexp issues
process.versions = {};

function noop() {}

process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;
process.prependListener = noop;
process.prependOnceListener = noop;

process.listeners = function (name) { return [] }

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; };

},{}],70:[function(require,module,exports){
module.exports = require('./lib/_stream_duplex.js');

},{"./lib/_stream_duplex.js":71}],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.

// 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 pna = require('process-nextick-args');
/*</replacement>*/

/*<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 util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

var Readable = require('./_stream_readable');
var Writable = require('./_stream_writable');

util.inherits(Duplex, Readable);

{
  // avoid scope creep, the keys array can then be collected
  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);
}

Object.defineProperty(Duplex.prototype, 'writableHighWaterMark', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function () {
    return this._writableState.highWaterMark;
  }
});

// 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.
  pna.nextTick(onEndNT, this);
}

function onEndNT(self) {
  self.end();
}

Object.defineProperty(Duplex.prototype, 'destroyed', {
  get: function () {
    if (this._readableState === undefined || this._writableState === undefined) {
      return false;
    }
    return this._readableState.destroyed && this._writableState.destroyed;
  },
  set: function (value) {
    // we ignore the value if the stream
    // has not been initialized yet
    if (this._readableState === undefined || this._writableState === undefined) {
      return;
    }

    // backward compatibility, the user is explicitly
    // managing destroyed
    this._readableState.destroyed = value;
    this._writableState.destroyed = value;
  }
});

Duplex.prototype._destroy = function (err, cb) {
  this.push(null);
  this.end();

  pna.nextTick(cb, err);
};
},{"./_stream_readable":73,"./_stream_writable":75,"core-util-is":44,"inherits":56,"process-nextick-args":68}],72:[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.

// 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":74,"core-util-is":44,"inherits":56}],73:[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.

'use strict';

/*<replacement>*/

var pna = require('process-nextick-args');
/*</replacement>*/

module.exports = Readable;

/*<replacement>*/
var isArray = require('isarray');
/*</replacement>*/

/*<replacement>*/
var Duplex;
/*</replacement>*/

Readable.ReadableState = ReadableState;

/*<replacement>*/
var EE = require('events').EventEmitter;

var EElistenerCount = function (emitter, type) {
  return emitter.listeners(type).length;
};
/*</replacement>*/

/*<replacement>*/
var Stream = require('./internal/streams/stream');
/*</replacement>*/

/*<replacement>*/

var Buffer = require('safe-buffer').Buffer;
var OurUint8Array = global.Uint8Array || function () {};
function _uint8ArrayToBuffer(chunk) {
  return Buffer.from(chunk);
}
function _isUint8Array(obj) {
  return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
}

/*</replacement>*/

/*<replacement>*/
var util = require('core-util-is');
util.inherits = require('inherits');
/*</replacement>*/

/*<replacement>*/
var debugUtil = require('util');
var debug = void 0;
if (debugUtil && debugUtil.debuglog) {
  debug = debugUtil.debuglog('stream');
} else {
  debug = function () {};
}
/*</replacement>*/

var BufferList = require('./internal/streams/BufferList');
var destroyImpl = require('./internal/streams/destroy');
var StringDecoder;

util.inherits(Readable, Stream);

var kProxyEvents = ['error', 'close', 'destroy', 'pause', 'resume'];

function prependListener(emitter, event, fn) {
  // Sadly this is not cacheable as some libraries bundle their own
  // event emitter implementation with them.
  if (typeof emitter.prependListener === 'function') return emitter.prependListener(event, fn);

  // This is a hack to make sure that our error handler is attached before any
  // userland ones.  NEVER DO THIS. This is here only because this code needs
  // to continue to work with older versions of Node.js that do not include
  // the prependListener() method. The goal is to eventually remove this hack.
  if (!emitter._events || !emitter._events[event]) emitter.on(event, fn);else if (isArray(emitter._events[event])) emitter._events[event].unshift(fn);else emitter._events[event] = [fn, emitter._events[event]];
}

function ReadableState(options, stream) {
  Duplex = Duplex || require('./_stream_duplex');

  options = options || {};

  // Duplex streams are both readable and writable, but share
  // the same options object.
  // However, some cases require setting options to different
  // values for the readable and the writable sides of the duplex stream.
  // These options can be provided separately as readableXXX and writableXXX.
  var isDuplex = stream instanceof Duplex;

  // 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 (isDuplex) 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 readableHwm = options.readableHighWaterMark;
  var defaultHwm = this.objectMode ? 16 : 16 * 1024;

  if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (readableHwm || readableHwm === 0)) this.highWaterMark = readableHwm;else this.highWaterMark = defaultHwm;

  // cast to ints.
  this.highWaterMark = Math.floor(this.highWaterMark);

  // A linked list is used to store data chunks instead of an array because the
  // linked list can remove elements from the beginning faster than
  // array.shift()
  this.buffer = new BufferList();
  this.length = 0;
  this.pipes = null;
  this.pipesCount = 0;
  this.flowing = null;
  this.ended = false;
  this.endEmitted = false;
  this.reading = false;

  // a flag to be able to tell if the event 'readable'/'data' is emitted
  // 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 read 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;

  // has it been destroyed
  this.destroyed = 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';

  // 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;
  }
}

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) {
    if (typeof options.read === 'function') this._read = options.read;

    if (typeof options.destroy === 'function') this._destroy = options.destroy;
  }

  Stream.call(this);
}

Object.defineProperty(Readable.prototype, 'destroyed', {
  get: function () {
    if (this._readableState === undefined) {
      return false;
    }
    return this._readableState.destroyed;
  },
  set: function (value) {
    // we ignore the value if the stream
    // has not been initialized yet
    if (!this._readableState) {
      return;
    }

    // backward compatibility, the user is explicitly
    // managing destroyed
    this._readableState.destroyed = value;
  }
});

Readable.prototype.destroy = destroyImpl.destroy;
Readable.prototype._undestroy = destroyImpl.undestroy;
Readable.prototype._destroy = function (err, cb) {
  this.push(null);
  cb(err);
};

// 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;
  var skipChunkCheck;

  if (!state.objectMode) {
    if (typeof chunk === 'string') {
      encoding = encoding || state.defaultEncoding;
      if (encoding !== state.encoding) {
        chunk = Buffer.from(chunk, encoding);
        encoding = '';
      }
      skipChunkCheck = true;
    }
  } else {
    skipChunkCheck = true;
  }

  return readableAddChunk(this, chunk, encoding, false, skipChunkCheck);
};

// Unshift should *always* be something directly out of read()
Readable.prototype.unshift = function (chunk) {
  return readableAddChunk(this, chunk, null, true, false);
};

function readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) {
  var state = stream._readableState;
  if (chunk === null) {
    state.reading = false;
    onEofChunk(stream, state);
  } else {
    var er;
    if (!skipChunkCheck) er = chunkInvalid(state, chunk);
    if (er) {
      stream.emit('error', er);
    } else if (state.objectMode || chunk && chunk.length > 0) {
      if (typeof chunk !== 'string' && !state.objectMode && Object.getPrototypeOf(chunk) !== Buffer.prototype) {
        chunk = _uint8ArrayToBuffer(chunk);
      }

      if (addToFront) {
        if (state.endEmitted) stream.emit('error', new Error('stream.unshift() after end event'));else addChunk(stream, state, chunk, true);
      } else if (state.ended) {
        stream.emit('error', new Error('stream.push() after EOF'));
      } else {
        state.reading = false;
        if (state.decoder && !encoding) {
          chunk = state.decoder.write(chunk);
          if (state.objectMode || chunk.length !== 0) addChunk(stream, state, chunk, false);else maybeReadMore(stream, state);
        } else {
          addChunk(stream, state, chunk, false);
        }
      }
    } else if (!addToFront) {
      state.reading = false;
    }
  }

  return needMoreData(state);
}

function addChunk(stream, state, chunk, addToFront) {
  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);
}

function chunkInvalid(state, chunk) {
  var er;
  if (!_isUint8Array(chunk) && typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
    er = new TypeError('Invalid non-string/buffer chunk');
  }
  return er;
}

// 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);
}

Readable.prototype.isPaused = function () {
  return this._readableState.flowing === false;
};

// backwards compatibility.
Readable.prototype.setEncoding = function (enc) {
  if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;
  this._readableState.decoder = new StringDecoder(enc);
  this._readableState.encoding = enc;
  return this;
};

// Don't raise the hwm > 8MB
var MAX_HWM = 0x800000;
function computeNewHighWaterMark(n) {
  if (n >= MAX_HWM) {
    n = MAX_HWM;
  } else {
    // Get the next highest power of 2 to prevent increasing hwm excessively in
    // tiny amounts
    n--;
    n |= n >>> 1;
    n |= n >>> 2;
    n |= n >>> 4;
    n |= n >>> 8;
    n |= n >>> 16;
    n++;
  }
  return n;
}

// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function howMuchToRead(n, state) {
  if (n <= 0 || state.length === 0 && state.ended) return 0;
  if (state.objectMode) return 1;
  if (n !== n) {
    // Only flow one buffer at a time
    if (state.flowing && state.length) return state.buffer.head.data.length;else return state.length;
  }
  // If we're asking for more than the current hwm, then raise the hwm.
  if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n);
  if (n <= state.length) return n;
  // Don't have enough
  if (!state.ended) {
    state.needReadable = true;
    return 0;
  }
  return state.length;
}

// you can override either this method, or the async _read(n) below.
Readable.prototype.read = function (n) {
  debug('read', n);
  n = parseInt(n, 10);
  var state = this._readableState;
  var nOrig = n;

  if (n !== 0) state.emittedReadable = false;

  // if we're doing read(0) to trigger a readable event, but we
  // already have a bunch of data in the buffer, then just trigger
  // the 'readable' event and move on.
  if (n === 0 && state.needReadable && (state.length >= state.highWaterMark || state.ended)) {
    debug('read: emitReadable', state.length, state.ended);
    if (state.length === 0 && state.ended) endReadable(this);else emitReadable(this);
    return null;
  }

  n = howMuchToRead(n, state);

  // if we've ended, and we're now clear, then finish it up.
  if (n === 0 && state.ended) {
    if (state.length === 0) endReadable(this);
    return null;
  }

  // All the actual chunk generation logic needs to be
  // *below* the call to _read.  The reason is that in certain
  // synthetic stream cases, such as passthrough streams, _read
  // may be a completely synchronous operation which may change
  // the state of the read buffer, providing enough data when
  // before there was *not* enough.
  //
  // So, the steps are:
  // 1. Figure out what the state of things will be after we do
  // a read from the buffer.
  //
  // 2. If that resulting state will trigger a _read, then call _read.
  // Note that this may be asynchronous, or synchronous.  Yes, it is
  // deeply ugly to write APIs this way, but that still doesn't mean
  // that the Readable class should behave improperly, as streams are
  // designed to be sync/async agnostic.
  // Take note if the _read call is sync or async (ie, if the read call
  // has returned yet), so that we know whether or not it's safe to emit
  // 'readable' etc.
  //
  // 3. Actually pull the requested chunks out of the buffer and return.

  // if we need a readable event, then we need to do some reading.
  var doRead = state.needReadable;
  debug('need readable', doRead);

  // if we currently have less than the highWaterMark, then also read some
  if (state.length === 0 || state.length - n < state.highWaterMark) {
    doRead = true;
    debug('length less than watermark', doRead);
  }

  // however, if we've ended, then there's no point, and if we're already
  // reading, then it's unnecessary.
  if (state.ended || state.reading) {
    doRead = false;
    debug('reading or ended', doRead);
  } else if (doRead) {
    debug('do read');
    state.reading = true;
    state.sync = true;
    // if the length is currently zero, then we *need* a readable event.
    if (state.length === 0) state.needReadable = true;
    // call internal read method
    this._read(state.highWaterMark);
    state.sync = false;
    // If _read pushed data synchronously, then `reading` will be false,
    // and we need to re-evaluate how much data we can return to the user.
    if (!state.reading) n = howMuchToRead(nOrig, state);
  }

  var ret;
  if (n > 0) ret = fromList(n, state);else ret = null;

  if (ret === null) {
    state.needReadable = true;
    n = 0;
  } else {
    state.length -= n;
  }

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

    // If we tried to read() past the EOF, then emit end on the next tick.
    if (nOrig !== n && state.ended) endReadable(this);
  }

  if (ret !== null) this.emit('data', ret);

  return ret;
};

function 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) pna.nextTick(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;
    pna.nextTick(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('_read() is 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 : unpipe;
  if (state.endEmitted) pna.nextTick(endFn);else src.once('end', endFn);

  dest.on('unpipe', onunpipe);
  function onunpipe(readable, unpipeInfo) {
    debug('onunpipe');
    if (readable === src) {
      if (unpipeInfo && unpipeInfo.hasUnpiped === false) {
        unpipeInfo.hasUnpiped = true;
        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', unpipe);
    src.removeListener('data', ondata);

    cleanedUp = true;

    // if the reader is waiting for a drain event from this
    // specific writer, then it would cause it to never start
    // flowing again.
    // So, if this is awaiting a drain, then we just call it now.
    // If we don't know, then assume that we are waiting for one.
    if (state.awaitDrain && (!dest._writableState || dest._writableState.needDrain)) ondrain();
  }

  // If the user pushes more data while we're writing to dest then we'll end up
  // in ondata again. However, we only want to increase awaitDrain once because
  // dest will only emit one 'drain' event for the multiple writes.
  // => Introduce a guard on increasing awaitDrain.
  var increasedAwaitDrain = false;
  src.on('data', ondata);
  function ondata(chunk) {
    debug('ondata');
    increasedAwaitDrain = false;
    var ret = dest.write(chunk);
    if (false === ret && !increasedAwaitDrain) {
      // If the user unpiped during `dest.write()`, it is possible
      // to get stuck in a permanently paused state if that write
      // also returned false.
      // => Check whether `dest` is still a piping destination.
      if ((state.pipesCount === 1 && state.pipes === dest || state.pipesCount > 1 && indexOf(state.pipes, dest) !== -1) && !cleanedUp) {
        debug('false write response, pause', src._readableState.awaitDrain);
        src._readableState.awaitDrain++;
        increasedAwaitDrain = true;
      }
      src.pause();
    }
  }

  // if the dest has an error, then stop piping into it.
  // however, don't suppress the throwing behavior for this.
  function onerror(er) {
    debug('onerror', er);
    unpipe();
    dest.removeListener('error', onerror);
    if (EElistenerCount(dest, 'error') === 0) dest.emit('error', er);
  }

  // Make sure our error handler is attached before userland ones.
  prependListener(dest, 'error', onerror);

  // Both close and finish should trigger unpipe, but only once.
  function onclose() {
    dest.removeListener('finish', onfinish);
    unpipe();
  }
  dest.once('close', onclose);
  function onfinish() {
    debug('onfinish');
    dest.removeListener('close', onclose);
    unpipe();
  }
  dest.once('finish', onfinish);

  function unpipe() {
    debug('unpipe');
    src.unpipe(dest);
  }

  // tell the dest that it's being piped to
  dest.emit('pipe', src);

  // start the flow if it hasn't been started already.
  if (!state.flowing) {
    debug('pipe resume');
    src.resume();
  }

  return dest;
};

function pipeOnDrain(src) {
  return function () {
    var state = src._readableState;
    debug('pipeOnDrain', state.awaitDrain);
    if (state.awaitDrain) state.awaitDrain--;
    if (state.awaitDrain === 0 && EElistenerCount(src, 'data')) {
      state.flowing = true;
      flow(src);
    }
  };
}

Readable.prototype.unpipe = function (dest) {
  var state = this._readableState;
  var unpipeInfo = { hasUnpiped: false };

  // 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, unpipeInfo);
    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, unpipeInfo);
    }return this;
  }

  // try to find the right one.
  var index = indexOf(state.pipes, dest);
  if (index === -1) return this;

  state.pipes.splice(index, 1);
  state.pipesCount -= 1;
  if (state.pipesCount === 1) state.pipes = state.pipes[0];

  dest.emit('unpipe', this, unpipeInfo);

  return this;
};

// set up data events if they are asked for
// Ensure readable listeners eventually get something
Readable.prototype.on = function (ev, fn) {
  var res = Stream.prototype.on.call(this, ev, fn);

  if (ev === 'data') {
    // Start flowing on next tick if stream isn't explicitly paused
    if (this._readableState.flowing !== false) this.resume();
  } else if (ev === 'readable') {
    var state = this._readableState;
    if (!state.endEmitted && !state.readableListening) {
      state.readableListening = state.needReadable = true;
      state.emittedReadable = false;
      if (!state.reading) {
        pna.nextTick(nReadingNextTick, this);
      } else if (state.length) {
        emitReadable(this);
      }
    }
  }

  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;
    pna.nextTick(resume_, stream, state);
  }
}

function resume_(stream, state) {
  if (!state.reading) {
    debug('resume read 0');
    stream.read(0);
  }

  state.resumeScheduled = false;
  state.awaitDrain = 0;
  stream.emit('resume');
  flow(stream);
  if (state.flowing && !state.reading) stream.read(0);
}

Readable.prototype.pause = function () {
  debug('call pause flowing=%j', this._readableState.flowing);
  if (false !== this._readableState.flowing) {
    debug('pause');
    this._readableState.flowing = false;
    this.emit('pause');
  }
  return this;
};

function flow(stream) {
  var state = stream._readableState;
  debug('flow', state.flowing);
  while (state.flowing && stream.read() !== null) {}
}

// wrap an old-style stream as the async data source.
// This is *not* part of the readable stream interface.
// It is an ugly unfortunate mess of history.
Readable.prototype.wrap = function (stream) {
  var _this = this;

  var state = this._readableState;
  var paused = false;

  stream.on('end', function () {
    debug('wrapped end');
    if (state.decoder && !state.ended) {
      var chunk = state.decoder.end();
      if (chunk && chunk.length) _this.push(chunk);
    }

    _this.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 = _this.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.
  for (var n = 0; n < kProxyEvents.length; n++) {
    stream.on(kProxyEvents[n], this.emit.bind(this, kProxyEvents[n]));
  }

  // when we try to consume some more bytes, simply unpause the
  // underlying stream.
  this._read = function (n) {
    debug('wrapped _read', n);
    if (paused) {
      paused = false;
      stream.resume();
    }
  };

  return this;
};

Object.defineProperty(Readable.prototype, 'readableHighWaterMark', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function () {
    return this._readableState.highWaterMark;
  }
});

// exposed for testing purposes only.
Readable._fromList = fromList;

// Pluck off n bytes from an array of buffers.
// Length is the combined lengths of all the buffers in the list.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function fromList(n, state) {
  // nothing buffered
  if (state.length === 0) return null;

  var ret;
  if (state.objectMode) ret = state.buffer.shift();else if (!n || n >= state.length) {
    // read it all, truncate the list
    if (state.decoder) ret = state.buffer.join('');else if (state.buffer.length === 1) ret = state.buffer.head.data;else ret = state.buffer.concat(state.length);
    state.buffer.clear();
  } else {
    // read part of list
    ret = fromListPartial(n, state.buffer, state.decoder);
  }

  return ret;
}

// Extracts only enough buffered data to satisfy the amount requested.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function fromListPartial(n, list, hasStrings) {
  var ret;
  if (n < list.head.data.length) {
    // slice is the same for buffers and strings
    ret = list.head.data.slice(0, n);
    list.head.data = list.head.data.slice(n);
  } else if (n === list.head.data.length) {
    // first chunk is a perfect match
    ret = list.shift();
  } else {
    // result spans more than one buffer
    ret = hasStrings ? copyFromBufferString(n, list) : copyFromBuffer(n, list);
  }
  return ret;
}

// Copies a specified amount of characters from the list of buffered data
// chunks.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function copyFromBufferString(n, list) {
  var p = list.head;
  var c = 1;
  var ret = p.data;
  n -= ret.length;
  while (p = p.next) {
    var str = p.data;
    var nb = n > str.length ? str.length : n;
    if (nb === str.length) ret += str;else ret += str.slice(0, n);
    n -= nb;
    if (n === 0) {
      if (nb === str.length) {
        ++c;
        if (p.next) list.head = p.next;else list.head = list.tail = null;
      } else {
        list.head = p;
        p.data = str.slice(nb);
      }
      break;
    }
    ++c;
  }
  list.length -= c;
  return ret;
}

// Copies a specified amount of bytes from the list of buffered data chunks.
// This function is designed to be inlinable, so please take care when making
// changes to the function body.
function copyFromBuffer(n, list) {
  var ret = Buffer.allocUnsafe(n);
  var p = list.head;
  var c = 1;
  p.data.copy(ret);
  n -= p.data.length;
  while (p = p.next) {
    var buf = p.data;
    var nb = n > buf.length ? buf.length : n;
    buf.copy(ret, ret.length - n, 0, nb);
    n -= nb;
    if (n === 0) {
      if (nb === buf.length) {
        ++c;
        if (p.next) list.head = p.next;else list.head = list.tail = null;
      } else {
        list.head = p;
        p.data = buf.slice(nb);
      }
      break;
    }
    ++c;
  }
  list.length -= c;
  return ret;
}

function endReadable(stream) {
  var state = stream._readableState;

  // If we get here before consuming all the bytes, then that is a
  // bug in node.  Should never happen.
  if (state.length > 0) throw new Error('"endReadable()" called on non-empty stream');

  if (!state.endEmitted) {
    state.ended = true;
    pna.nextTick(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 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'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./_stream_duplex":71,"./internal/streams/BufferList":76,"./internal/streams/destroy":77,"./internal/streams/stream":78,"_process":69,"core-util-is":44,"events":50,"inherits":56,"isarray":58,"process-nextick-args":68,"safe-buffer":83,"string_decoder/":85,"util":40}],74:[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.

// 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 afterTransform(er, data) {
  var ts = this._transformState;
  ts.transforming = false;

  var cb = ts.writecb;

  if (!cb) {
    return this.emit('error', new Error('write callback called multiple times'));
  }

  ts.writechunk = null;
  ts.writecb = null;

  if (data != null) // single equals check for both `null` and `undefined`
    this.push(data);

  cb(er);

  var rs = this._readableState;
  rs.reading = false;
  if (rs.needReadable || rs.length < rs.highWaterMark) {
    this._read(rs.highWaterMark);
  }
}

function Transform(options) {
  if (!(this instanceof Transform)) return new Transform(options);

  Duplex.call(this, options);

  this._transformState = {
    afterTransform: afterTransform.bind(this),
    needTransform: false,
    transforming: false,
    writecb: null,
    writechunk: null,
    writeencoding: null
  };

  // 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;
  }

  // When the writable side finishes, then flush out anything remaining.
  this.on('prefinish', prefinish);
}

function prefinish() {
  var _this = this;

  if (typeof this._flush === 'function') {
    this._flush(function (er, data) {
      done(_this, er, data);
    });
  } else {
    done(this, null, null);
  }
}

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('_transform() is 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;
  }
};

Transform.prototype._destroy = function (err, cb) {
  var _this2 = this;

  Duplex.prototype._destroy.call(this, err, function (err2) {
    cb(err2);
    _this2.emit('close');
  });
};

function done(stream, er, data) {
  if (er) return stream.emit('error', er);

  if (data != null) // single equals check for both `null` and `undefined`
    stream.push(data);

  // if there's nothing in the write buffer, then that means
  // that nothing more will ever be provided
  if (stream._writableState.length) throw new Error('Calling transform done when ws.length != 0');

  if (stream._transformState.transforming) throw new Error('Calling transform done when still transforming');

  return stream.push(null);
}
},{"./_stream_duplex":71,"core-util-is":44,"inherits":56}],75:[function(require,module,exports){
(function (process,global,setImmediate){
// 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.

// 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';

/*<replacement>*/

var pna = require('process-nextick-args');
/*</replacement>*/

module.exports = Writable;

/* <replacement> */
function WriteReq(chunk, encoding, cb) {
  this.chunk = chunk;
  this.encoding = encoding;
  this.callback = cb;
  this.next = null;
}

// 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 () {
    onCorkedFinish(_this, state);
  };
}
/* </replacement> */

/*<replacement>*/
var asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : pna.nextTick;
/*</replacement>*/

/*<replacement>*/
var Duplex;
/*</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 = require('./internal/streams/stream');
/*</replacement>*/

/*<replacement>*/

var Buffer = require('safe-buffer').Buffer;
var OurUint8Array = global.Uint8Array || function () {};
function _uint8ArrayToBuffer(chunk) {
  return Buffer.from(chunk);
}
function _isUint8Array(obj) {
  return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;
}

/*</replacement>*/

var destroyImpl = require('./internal/streams/destroy');

util.inherits(Writable, Stream);

function nop() {}

function WritableState(options, stream) {
  Duplex = Duplex || require('./_stream_duplex');

  options = options || {};

  // Duplex streams are both readable and writable, but share
  // the same options object.
  // However, some cases require setting options to different
  // values for the readable and the writable sides of the duplex stream.
  // These options can be provided separately as readableXXX and writableXXX.
  var isDuplex = stream instanceof Duplex;

  // object stream flag to indicate whether or not this stream
  // contains buffers or objects.
  this.objectMode = !!options.objectMode;

  if (isDuplex) 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 writableHwm = options.writableHighWaterMark;
  var defaultHwm = this.objectMode ? 16 : 16 * 1024;

  if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (writableHwm || writableHwm === 0)) this.highWaterMark = writableHwm;else this.highWaterMark = defaultHwm;

  // cast to ints.
  this.highWaterMark = Math.floor(this.highWaterMark);

  // if _final has been called
  this.finalCalled = false;

  // drain event flag.
  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;

  // has it been destroyed
  this.destroyed = 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 getBuffer() {
  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.', 'DEP0003')
    });
  } catch (_) {}
})();

// Test _writableState for inheritance to account for Duplex streams,
// whose prototype chain only points to Readable.
var realHasInstance;
if (typeof Symbol === 'function' && Symbol.hasInstance && typeof Function.prototype[Symbol.hasInstance] === 'function') {
  realHasInstance = Function.prototype[Symbol.hasInstance];
  Object.defineProperty(Writable, Symbol.hasInstance, {
    value: function (object) {
      if (realHasInstance.call(this, object)) return true;
      if (this !== Writable) return false;

      return object && object._writableState instanceof WritableState;
    }
  });
} else {
  realHasInstance = function (object) {
    return object instanceof this;
  };
}

function Writable(options) {
  Duplex = Duplex || require('./_stream_duplex');

  // Writable ctor is applied to Duplexes, too.
  // `realHasInstance` is necessary because using plain `instanceof`
  // would return false, as no `_writableState` property is attached.

  // Trying to use the custom `instanceof` for Writable here will also break the
  // Node.js LazyTransform implementation, which has a non-trivial getter for
  // `_writableState` that would lead to infinite recursion.
  if (!realHasInstance.call(Writable, this) && !(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;

    if (typeof options.destroy === 'function') this._destroy = options.destroy;

    if (typeof options.final === 'function') this._final = options.final;
  }

  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);
  pna.nextTick(cb, er);
}

// Checks that a user-supplied chunk is valid, especially for the particular
// mode the stream is in. Currently this means that `null` is never accepted
// and undefined/non-string values are only allowed in object mode.
function validChunk(stream, state, chunk, cb) {
  var valid = true;
  var er = false;

  if (chunk === null) {
    er = new TypeError('May not write null values to stream');
  } else if (typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
    er = new TypeError('Invalid non-string/buffer chunk');
  }
  if (er) {
    stream.emit('error', er);
    pna.nextTick(cb, er);
    valid = false;
  }
  return valid;
}

Writable.prototype.write = function (chunk, encoding, cb) {
  var state = this._writableState;
  var ret = false;
  var isBuf = !state.objectMode && _isUint8Array(chunk);

  if (isBuf && !Buffer.isBuffer(chunk)) {
    chunk = _uint8ArrayToBuffer(chunk);
  }

  if (typeof encoding === 'function') {
    cb = encoding;
    encoding = null;
  }

  if (isBuf) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding;

  if (typeof cb !== 'function') cb = nop;

  if (state.ended) writeAfterEnd(this, cb);else if (isBuf || validChunk(this, state, chunk, cb)) {
    state.pendingcb++;
    ret = writeOrBuffer(this, state, isBuf, 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 = Buffer.from(chunk, encoding);
  }
  return chunk;
}

Object.defineProperty(Writable.prototype, 'writableHighWaterMark', {
  // making it explicit this property is not enumerable
  // because otherwise some prototype manipulation in
  // userland will fail
  enumerable: false,
  get: function () {
    return this._writableState.highWaterMark;
  }
});

// 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, isBuf, chunk, encoding, cb) {
  if (!isBuf) {
    var newChunk = decodeChunk(state, chunk, encoding);
    if (chunk !== newChunk) {
      isBuf = true;
      encoding = 'buffer';
      chunk = newChunk;
    }
  }
  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 = {
      chunk: chunk,
      encoding: encoding,
      isBuf: isBuf,
      callback: cb,
      next: null
    };
    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) {
    // defer the callback if we are being called synchronously
    // to avoid piling up things on the stack
    pna.nextTick(cb, er);
    // this can emit finish, and it will always happen
    // after error
    pna.nextTick(finishMaybe, stream, state);
    stream._writableState.errorEmitted = true;
    stream.emit('error', er);
  } else {
    // the caller expect this to happen before if
    // it is async
    cb(er);
    stream._writableState.errorEmitted = true;
    stream.emit('error', er);
    // this can emit finish, but finish must
    // always follow error
    finishMaybe(stream, state);
  }
}

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;
    var allBuffers = true;
    while (entry) {
      buffer[count] = entry;
      if (!entry.isBuf) allBuffers = false;
      entry = entry.next;
      count += 1;
    }
    buffer.allBuffers = allBuffers;

    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);
    }
    state.bufferedRequestCount = 0;
  } 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;
      state.bufferedRequestCount--;
      // 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.bufferedRequest = entry;
  state.bufferProcessing = false;
}

Writable.prototype._write = function (chunk, encoding, cb) {
  cb(new Error('_write() is 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 callFinal(stream, state) {
  stream._final(function (err) {
    state.pendingcb--;
    if (err) {
      stream.emit('error', err);
    }
    state.prefinished = true;
    stream.emit('prefinish');
    finishMaybe(stream, state);
  });
}
function prefinish(stream, state) {
  if (!state.prefinished && !state.finalCalled) {
    if (typeof stream._final === 'function') {
      state.pendingcb++;
      state.finalCalled = true;
      pna.nextTick(callFinal, stream, state);
    } else {
      state.prefinished = true;
      stream.emit('prefinish');
    }
  }
}

function finishMaybe(stream, state) {
  var need = needFinish(state);
  if (need) {
    prefinish(stream, state);
    if (state.pendingcb === 0) {
      state.finished = true;
      stream.emit('finish');
    }
  }
  return need;
}

function endWritable(stream, state, cb) {
  state.ending = true;
  finishMaybe(stream, state);
  if (cb) {
    if (state.finished) pna.nextTick(cb);else stream.once('finish', cb);
  }
  state.ended = true;
  stream.writable = false;
}

function onCorkedFinish(corkReq, state, err) {
  var entry = corkReq.entry;
  corkReq.entry = null;
  while (entry) {
    var cb = entry.callback;
    state.pendingcb--;
    cb(err);
    entry = entry.next;
  }
  if (state.corkedRequestsFree) {
    state.corkedRequestsFree.next = corkReq;
  } else {
    state.corkedRequestsFree = corkReq;
  }
}

Object.defineProperty(Writable.prototype, 'destroyed', {
  get: function () {
    if (this._writableState === undefined) {
      return false;
    }
    return this._writableState.destroyed;
  },
  set: function (value) {
    // we ignore the value if the stream
    // has not been initialized yet
    if (!this._writableState) {
      return;
    }

    // backward compatibility, the user is explicitly
    // managing destroyed
    this._writableState.destroyed = value;
  }
});

Writable.prototype.destroy = destroyImpl.destroy;
Writable.prototype._undestroy = destroyImpl.undestroy;
Writable.prototype._destroy = function (err, cb) {
  this.end();
  cb(err);
};
}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("timers").setImmediate)
},{"./_stream_duplex":71,"./internal/streams/destroy":77,"./internal/streams/stream":78,"_process":69,"core-util-is":44,"inherits":56,"process-nextick-args":68,"safe-buffer":83,"timers":86,"util-deprecate":87}],76:[function(require,module,exports){
'use strict';

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

var Buffer = require('safe-buffer').Buffer;
var util = require('util');

function copyBuffer(src, target, offset) {
  src.copy(target, offset);
}

module.exports = function () {
  function BufferList() {
    _classCallCheck(this, BufferList);

    this.head = null;
    this.tail = null;
    this.length = 0;
  }

  BufferList.prototype.push = function push(v) {
    var entry = { data: v, next: null };
    if (this.length > 0) this.tail.next = entry;else this.head = entry;
    this.tail = entry;
    ++this.length;
  };

  BufferList.prototype.unshift = function unshift(v) {
    var entry = { data: v, next: this.head };
    if (this.length === 0) this.tail = entry;
    this.head = entry;
    ++this.length;
  };

  BufferList.prototype.shift = function shift() {
    if (this.length === 0) return;
    var ret = this.head.data;
    if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next;
    --this.length;
    return ret;
  };

  BufferList.prototype.clear = function clear() {
    this.head = this.tail = null;
    this.length = 0;
  };

  BufferList.prototype.join = function join(s) {
    if (this.length === 0) return '';
    var p = this.head;
    var ret = '' + p.data;
    while (p = p.next) {
      ret += s + p.data;
    }return ret;
  };

  BufferList.prototype.concat = function concat(n) {
    if (this.length === 0) return Buffer.alloc(0);
    if (this.length === 1) return this.head.data;
    var ret = Buffer.allocUnsafe(n >>> 0);
    var p = this.head;
    var i = 0;
    while (p) {
      copyBuffer(p.data, ret, i);
      i += p.data.length;
      p = p.next;
    }
    return ret;
  };

  return BufferList;
}();

if (util && util.inspect && util.inspect.custom) {
  module.exports.prototype[util.inspect.custom] = function () {
    var obj = util.inspect({ length: this.length });
    return this.constructor.name + ' ' + obj;
  };
}
},{"safe-buffer":83,"util":40}],77:[function(require,module,exports){
'use strict';

/*<replacement>*/

var pna = require('process-nextick-args');
/*</replacement>*/

// undocumented cb() API, needed for core, not for public API
function destroy(err, cb) {
  var _this = this;

  var readableDestroyed = this._readableState && this._readableState.destroyed;
  var writableDestroyed = this._writableState && this._writableState.destroyed;

  if (readableDestroyed || writableDestroyed) {
    if (cb) {
      cb(err);
    } else if (err && (!this._writableState || !this._writableState.errorEmitted)) {
      pna.nextTick(emitErrorNT, this, err);
    }
    return this;
  }

  // we set destroyed to true before firing error callbacks in order
  // to make it re-entrance safe in case destroy() is called within callbacks

  if (this._readableState) {
    this._readableState.destroyed = true;
  }

  // if this is a duplex stream mark the writable part as destroyed as well
  if (this._writableState) {
    this._writableState.destroyed = true;
  }

  this._destroy(err || null, function (err) {
    if (!cb && err) {
      pna.nextTick(emitErrorNT, _this, err);
      if (_this._writableState) {
        _this._writableState.errorEmitted = true;
      }
    } else if (cb) {
      cb(err);
    }
  });

  return this;
}

function undestroy() {
  if (this._readableState) {
    this._readableState.destroyed = false;
    this._readableState.reading = false;
    this._readableState.ended = false;
    this._readableState.endEmitted = false;
  }

  if (this._writableState) {
    this._writableState.destroyed = false;
    this._writableState.ended = false;
    this._writableState.ending = false;
    this._writableState.finished = false;
    this._writableState.errorEmitted = false;
  }
}

function emitErrorNT(self, err) {
  self.emit('error', err);
}

module.exports = {
  destroy: destroy,
  undestroy: undestroy
};
},{"process-nextick-args":68}],78:[function(require,module,exports){
module.exports = require('events').EventEmitter;

},{"events":50}],79:[function(require,module,exports){
module.exports = require('./readable').PassThrough

},{"./readable":80}],80:[function(require,module,exports){
exports = module.exports = require('./lib/_stream_readable.js');
exports.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');

},{"./lib/_stream_duplex.js":71,"./lib/_stream_passthrough.js":72,"./lib/_stream_readable.js":73,"./lib/_stream_transform.js":74,"./lib/_stream_writable.js":75}],81:[function(require,module,exports){
module.exports = require('./readable').Transform

},{"./readable":80}],82:[function(require,module,exports){
module.exports = require('./lib/_stream_writable.js');

},{"./lib/_stream_writable.js":75}],83:[function(require,module,exports){
/* eslint-disable node/no-deprecated-api */
var buffer = require('buffer')
var Buffer = buffer.Buffer

// alternative to using Object.keys for old browsers
function copyProps (src, dst) {
  for (var key in src) {
    dst[key] = src[key]
  }
}
if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {
  module.exports = buffer
} else {
  // Copy properties from require('buffer')
  copyProps(buffer, exports)
  exports.Buffer = SafeBuffer
}

function SafeBuffer (arg, encodingOrOffset, length) {
  return Buffer(arg, encodingOrOffset, length)
}

// Copy static methods from Buffer
copyProps(Buffer, SafeBuffer)

SafeBuffer.from = function (arg, encodingOrOffset, length) {
  if (typeof arg === 'number') {
    throw new TypeError('Argument must not be a number')
  }
  return Buffer(arg, encodingOrOffset, length)
}

SafeBuffer.alloc = function (size, fill, encoding) {
  if (typeof size !== 'number') {
    throw new TypeError('Argument must be a number')
  }
  var buf = Buffer(size)
  if (fill !== undefined) {
    if (typeof encoding === 'string') {
      buf.fill(fill, encoding)
    } else {
      buf.fill(fill)
    }
  } else {
    buf.fill(0)
  }
  return buf
}

SafeBuffer.allocUnsafe = function (size) {
  if (typeof size !== 'number') {
    throw new TypeError('Argument must be a number')
  }
  return Buffer(size)
}

SafeBuffer.allocUnsafeSlow = function (size) {
  if (typeof size !== 'number') {
    throw new TypeError('Argument must be a number')
  }
  return buffer.SlowBuffer(size)
}

},{"buffer":43}],84:[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":56,"readable-stream/duplex.js":70,"readable-stream/passthrough.js":79,"readable-stream/readable.js":80,"readable-stream/transform.js":81,"readable-stream/writable.js":82}],85:[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.

'use strict';

/*<replacement>*/

var Buffer = require('safe-buffer').Buffer;
/*</replacement>*/

var isEncoding = Buffer.isEncoding || function (encoding) {
  encoding = '' + 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 _normalizeEncoding(enc) {
  if (!enc) return 'utf8';
  var retried;
  while (true) {
    switch (enc) {
      case 'utf8':
      case 'utf-8':
        return 'utf8';
      case 'ucs2':
      case 'ucs-2':
      case 'utf16le':
      case 'utf-16le':
        return 'utf16le';
      case 'latin1':
      case 'binary':
        return 'latin1';
      case 'base64':
      case 'ascii':
      case 'hex':
        return enc;
      default:
        if (retried) return; // undefined
        enc = ('' + enc).toLowerCase();
        retried = true;
    }
  }
};

// Do not cache `Buffer.isEncoding` when checking encoding names as some
// modules monkey-patch it to support additional encodings
function normalizeEncoding(enc) {
  var nenc = _normalizeEncoding(enc);
  if (typeof nenc !== 'string' && (Buffer.isEncoding === isEncoding || !isEncoding(enc))) throw new Error('Unknown encoding: ' + enc);
  return nenc || enc;
}

// StringDecoder provides an interface for efficiently splitting a series of
// buffers into a series of JS strings without breaking apart multi-byte
// characters.
exports.StringDecoder = StringDecoder;
function StringDecoder(encoding) {
  this.encoding = normalizeEncoding(encoding);
  var nb;
  switch (this.encoding) {
    case 'utf16le':
      this.text = utf16Text;
      this.end = utf16End;
      nb = 4;
      break;
    case 'utf8':
      this.fillLast = utf8FillLast;
      nb = 4;
      break;
    case 'base64':
      this.text = base64Text;
      this.end = base64End;
      nb = 3;
      break;
    default:
      this.write = simpleWrite;
      this.end = simpleEnd;
      return;
  }
  this.lastNeed = 0;
  this.lastTotal = 0;
  this.lastChar = Buffer.allocUnsafe(nb);
}

StringDecoder.prototype.write = function (buf) {
  if (buf.length === 0) return '';
  var r;
  var i;
  if (this.lastNeed) {
    r = this.fillLast(buf);
    if (r === undefined) return '';
    i = this.lastNeed;
    this.lastNeed = 0;
  } else {
    i = 0;
  }
  if (i < buf.length) return r ? r + this.text(buf, i) : this.text(buf, i);
  return r || '';
};

StringDecoder.prototype.end = utf8End;

// Returns only complete characters in a Buffer
StringDecoder.prototype.text = utf8Text;

// Attempts to complete a partial non-UTF-8 character using bytes from a Buffer
StringDecoder.prototype.fillLast = function (buf) {
  if (this.lastNeed <= buf.length) {
    buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, this.lastNeed);
    return this.lastChar.toString(this.encoding, 0, this.lastTotal);
  }
  buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, buf.length);
  this.lastNeed -= buf.length;
};

// Checks the type of a UTF-8 byte, whether it's ASCII, a leading byte, or a
// continuation byte. If an invalid byte is detected, -2 is returned.
function utf8CheckByte(byte) {
  if (byte <= 0x7F) return 0;else if (byte >> 5 === 0x06) return 2;else if (byte >> 4 === 0x0E) return 3;else if (byte >> 3 === 0x1E) return 4;
  return byte >> 6 === 0x02 ? -1 : -2;
}

// Checks at most 3 bytes at the end of a Buffer in order to detect an
// incomplete multi-byte UTF-8 character. The total number of bytes (2, 3, or 4)
// needed to complete the UTF-8 character (if applicable) are returned.
function utf8CheckIncomplete(self, buf, i) {
  var j = buf.length - 1;
  if (j < i) return 0;
  var nb = utf8CheckByte(buf[j]);
  if (nb >= 0) {
    if (nb > 0) self.lastNeed = nb - 1;
    return nb;
  }
  if (--j < i || nb === -2) return 0;
  nb = utf8CheckByte(buf[j]);
  if (nb >= 0) {
    if (nb > 0) self.lastNeed = nb - 2;
    return nb;
  }
  if (--j < i || nb === -2) return 0;
  nb = utf8CheckByte(buf[j]);
  if (nb >= 0) {
    if (nb > 0) {
      if (nb === 2) nb = 0;else self.lastNeed = nb - 3;
    }
    return nb;
  }
  return 0;
}

// Validates as many continuation bytes for a multi-byte UTF-8 character as
// needed or are available. If we see a non-continuation byte where we expect
// one, we "replace" the validated continuation bytes we've seen so far with
// a single UTF-8 replacement character ('\ufffd'), to match v8's UTF-8 decoding
// behavior. The continuation byte check is included three times in the case
// where all of the continuation bytes for a character exist in the same buffer.
// It is also done this way as a slight performance increase instead of using a
// loop.
function utf8CheckExtraBytes(self, buf, p) {
  if ((buf[0] & 0xC0) !== 0x80) {
    self.lastNeed = 0;
    return '\ufffd';
  }
  if (self.lastNeed > 1 && buf.length > 1) {
    if ((buf[1] & 0xC0) !== 0x80) {
      self.lastNeed = 1;
      return '\ufffd';
    }
    if (self.lastNeed > 2 && buf.length > 2) {
      if ((buf[2] & 0xC0) !== 0x80) {
        self.lastNeed = 2;
        return '\ufffd';
      }
    }
  }
}

// Attempts to complete a multi-byte UTF-8 character using bytes from a Buffer.
function utf8FillLast(buf) {
  var p = this.lastTotal - this.lastNeed;
  var r = utf8CheckExtraBytes(this, buf, p);
  if (r !== undefined) return r;
  if (this.lastNeed <= buf.length) {
    buf.copy(this.lastChar, p, 0, this.lastNeed);
    return this.lastChar.toString(this.encoding, 0, this.lastTotal);
  }
  buf.copy(this.lastChar, p, 0, buf.length);
  this.lastNeed -= buf.length;
}

// Returns all complete UTF-8 characters in a Buffer. If the Buffer ended on a
// partial character, the character's bytes are buffered until the required
// number of bytes are available.
function utf8Text(buf, i) {
  var total = utf8CheckIncomplete(this, buf, i);
  if (!this.lastNeed) return buf.toString('utf8', i);
  this.lastTotal = total;
  var end = buf.length - (total - this.lastNeed);
  buf.copy(this.lastChar, 0, end);
  return buf.toString('utf8', i, end);
}

// For UTF-8, a replacement character is added when ending on a partial
// character.
function utf8End(buf) {
  var r = buf && buf.length ? this.write(buf) : '';
  if (this.lastNeed) return r + '\ufffd';
  return r;
}

// UTF-16LE typically needs two bytes per character, but even if we have an even
// number of bytes available, we need to check if we end on a leading/high
// surrogate. In that case, we need to wait for the next two bytes in order to
// decode the last character properly.
function utf16Text(buf, i) {
  if ((buf.length - i) % 2 === 0) {
    var r = buf.toString('utf16le', i);
    if (r) {
      var c = r.charCodeAt(r.length - 1);
      if (c >= 0xD800 && c <= 0xDBFF) {
        this.lastNeed = 2;
        this.lastTotal = 4;
        this.lastChar[0] = buf[buf.length - 2];
        this.lastChar[1] = buf[buf.length - 1];
        return r.slice(0, -1);
      }
    }
    return r;
  }
  this.lastNeed = 1;
  this.lastTotal = 2;
  this.lastChar[0] = buf[buf.length - 1];
  return buf.toString('utf16le', i, buf.length - 1);
}

// For UTF-16LE we do not explicitly append special replacement characters if we
// end on a partial character, we simply let v8 handle that.
function utf16End(buf) {
  var r = buf && buf.length ? this.write(buf) : '';
  if (this.lastNeed) {
    var end = this.lastTotal - this.lastNeed;
    return r + this.lastChar.toString('utf16le', 0, end);
  }
  return r;
}

function base64Text(buf, i) {
  var n = (buf.length - i) % 3;
  if (n === 0) return buf.toString('base64', i);
  this.lastNeed = 3 - n;
  this.lastTotal = 3;
  if (n === 1) {
    this.lastChar[0] = buf[buf.length - 1];
  } else {
    this.lastChar[0] = buf[buf.length - 2];
    this.lastChar[1] = buf[buf.length - 1];
  }
  return buf.toString('base64', i, buf.length - n);
}

function base64End(buf) {
  var r = buf && buf.length ? this.write(buf) : '';
  if (this.lastNeed) return r + this.lastChar.toString('base64', 0, 3 - this.lastNeed);
  return r;
}

// Pass bytes on through for single-byte encodings (e.g. ascii, latin1, hex)
function simpleWrite(buf) {
  return buf.toString(this.encoding);
}

function simpleEnd(buf) {
  return buf && buf.length ? this.write(buf) : '';
}
},{"safe-buffer":83}],86:[function(require,module,exports){
(function (setImmediate,clearImmediate){
var nextTick = require('process/browser.js').nextTick;
var apply = Function.prototype.apply;
var slice = Array.prototype.slice;
var immediateIds = {};
var nextImmediateId = 0;

// DOM APIs, for completeness

exports.setTimeout = function() {
  return new Timeout(apply.call(setTimeout, window, arguments), clearTimeout);
};
exports.setInterval = function() {
  return new Timeout(apply.call(setInterval, window, arguments), clearInterval);
};
exports.clearTimeout =
exports.clearInterval = function(timeout) { timeout.close(); };

function Timeout(id, clearFn) {
  this._id = id;
  this._clearFn = clearFn;
}
Timeout.prototype.unref = Timeout.prototype.ref = function() {};
Timeout.prototype.close = function() {
  this._clearFn.call(window, this._id);
};

// Does not start the time, just sets up the members needed.
exports.enroll = function(item, msecs) {
  clearTimeout(item._idleTimeoutId);
  item._idleTimeout = msecs;
};

exports.unenroll = function(item) {
  clearTimeout(item._idleTimeoutId);
  item._idleTimeout = -1;
};

exports._unrefActive = exports.active = function(item) {
  clearTimeout(item._idleTimeoutId);

  var msecs = item._idleTimeout;
  if (msecs >= 0) {
    item._idleTimeoutId = setTimeout(function onTimeout() {
      if (item._onTimeout)
        item._onTimeout();
    }, msecs);
  }
};

// That's not how node.js implements it but the exposed api is the same.
exports.setImmediate = typeof setImmediate === "function" ? setImmediate : function(fn) {
  var id = nextImmediateId++;
  var args = arguments.length < 2 ? false : slice.call(arguments, 1);

  immediateIds[id] = true;

  nextTick(function onNextTick() {
    if (immediateIds[id]) {
      // fn.call() is faster so we optimize for the common use-case
      // @see http://jsperf.com/call-apply-segu
      if (args) {
        fn.apply(null, args);
      } else {
        fn.call(null);
      }
      // Prevent ids from leaking
      exports.clearImmediate(id);
    }
  });

  return id;
};

exports.clearImmediate = typeof clearImmediate === "function" ? clearImmediate : function(id) {
  delete immediateIds[id];
};
}).call(this,require("timers").setImmediate,require("timers").clearImmediate)
},{"process/browser.js":69,"timers":86}],87:[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 : {})
},{}],88:[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';
}
},{}],89:[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":88,"_process":69,"inherits":56}],90:[function(require,module,exports){
module.exports={
  "name": "mocha",
  "version": "7.1.2",
  "homepage": "https://mochajs.org/",
  "notifyLogo": "https://ibin.co/4QuRuGjXvl36.png"
}
},{}]},{},[1]);