mocha.js

// mocha@10.0.0 in javascript ES2018
(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
  typeof define === 'function' && define.amd ? define(factory) :
  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.mocha = factory());
})(this, (function () { 'use strict';

  var global$2 = (typeof global !== "undefined" ? global :
    typeof self !== "undefined" ? self :
    typeof window !== "undefined" ? window : {});

  var global$1 = (typeof global$2 !== "undefined" ? global$2 :
              typeof self !== "undefined" ? self :
              typeof window !== "undefined" ? window : {});

  // shim for using process in browser
  // based off https://github.com/defunctzombie/node-process/blob/master/browser.js

  function defaultSetTimout$1() {
      throw new Error('setTimeout has not been defined');
  }
  function defaultClearTimeout$1 () {
      throw new Error('clearTimeout has not been defined');
  }
  var cachedSetTimeout$1 = defaultSetTimout$1;
  var cachedClearTimeout$1 = defaultClearTimeout$1;
  if (typeof global$1.setTimeout === 'function') {
      cachedSetTimeout$1 = setTimeout;
  }
  if (typeof global$1.clearTimeout === 'function') {
      cachedClearTimeout$1 = clearTimeout;
  }

  function runTimeout$1(fun) {
      if (cachedSetTimeout$1 === setTimeout) {
          //normal enviroments in sane situations
          return setTimeout(fun, 0);
      }
      // if setTimeout wasn't available but was latter defined
      if ((cachedSetTimeout$1 === defaultSetTimout$1 || !cachedSetTimeout$1) && setTimeout) {
          cachedSetTimeout$1 = setTimeout;
          return setTimeout(fun, 0);
      }
      try {
          // when when somebody has screwed with setTimeout but no I.E. maddness
          return cachedSetTimeout$1(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$1.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$1.call(this, fun, 0);
          }
      }


  }
  function runClearTimeout$1(marker) {
      if (cachedClearTimeout$1 === clearTimeout) {
          //normal enviroments in sane situations
          return clearTimeout(marker);
      }
      // if clearTimeout wasn't available but was latter defined
      if ((cachedClearTimeout$1 === defaultClearTimeout$1 || !cachedClearTimeout$1) && clearTimeout) {
          cachedClearTimeout$1 = clearTimeout;
          return clearTimeout(marker);
      }
      try {
          // when when somebody has screwed with setTimeout but no I.E. maddness
          return cachedClearTimeout$1(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$1.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$1.call(this, marker);
          }
      }



  }
  var queue$1 = [];
  var draining$1 = false;
  var currentQueue$1;
  var queueIndex$1 = -1;

  function cleanUpNextTick$1() {
      if (!draining$1 || !currentQueue$1) {
          return;
      }
      draining$1 = false;
      if (currentQueue$1.length) {
          queue$1 = currentQueue$1.concat(queue$1);
      } else {
          queueIndex$1 = -1;
      }
      if (queue$1.length) {
          drainQueue$1();
      }
  }

  function drainQueue$1() {
      if (draining$1) {
          return;
      }
      var timeout = runTimeout$1(cleanUpNextTick$1);
      draining$1 = true;

      var len = queue$1.length;
      while(len) {
          currentQueue$1 = queue$1;
          queue$1 = [];
          while (++queueIndex$1 < len) {
              if (currentQueue$1) {
                  currentQueue$1[queueIndex$1].run();
              }
          }
          queueIndex$1 = -1;
          len = queue$1.length;
      }
      currentQueue$1 = null;
      draining$1 = false;
      runClearTimeout$1(timeout);
  }
  function nextTick$1(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$1.push(new Item$1(fun, args));
      if (queue$1.length === 1 && !draining$1) {
          runTimeout$1(drainQueue$1);
      }
  }
  // v8 likes predictible objects
  function Item$1(fun, array) {
      this.fun = fun;
      this.array = array;
  }
  Item$1.prototype.run = function () {
      this.fun.apply(null, this.array);
  };
  var title$1 = 'browser';
  var platform$1 = 'browser';
  var browser$4 = true;
  var env$1 = {};
  var argv$1 = [];
  var version$2 = ''; // empty string to avoid regexp issues
  var versions$1 = {};
  var release$1 = {};
  var config$1 = {};

  function noop$1() {}

  var on$1 = noop$1;
  var addListener$1 = noop$1;
  var once$1 = noop$1;
  var off$1 = noop$1;
  var removeListener$1 = noop$1;
  var removeAllListeners$1 = noop$1;
  var emit$1 = noop$1;

  function binding$1(name) {
      throw new Error('process.binding is not supported');
  }

  function cwd$1 () { return '/' }
  function chdir$1 (dir) {
      throw new Error('process.chdir is not supported');
  }function umask$1() { return 0; }

  // from https://github.com/kumavis/browser-process-hrtime/blob/master/index.js
  var performance$1 = global$1.performance || {};
  var performanceNow$1 =
    performance$1.now        ||
    performance$1.mozNow     ||
    performance$1.msNow      ||
    performance$1.oNow       ||
    performance$1.webkitNow  ||
    function(){ return (new Date()).getTime() };

  // generate timestamp or delta
  // see http://nodejs.org/api/process.html#process_process_hrtime
  function hrtime$1(previousTimestamp){
    var clocktime = performanceNow$1.call(performance$1)*1e-3;
    var seconds = Math.floor(clocktime);
    var nanoseconds = Math.floor((clocktime%1)*1e9);
    if (previousTimestamp) {
      seconds = seconds - previousTimestamp[0];
      nanoseconds = nanoseconds - previousTimestamp[1];
      if (nanoseconds<0) {
        seconds--;
        nanoseconds += 1e9;
      }
    }
    return [seconds,nanoseconds]
  }

  var startTime$1 = new Date();
  function uptime$1() {
    var currentTime = new Date();
    var dif = currentTime - startTime$1;
    return dif / 1000;
  }

  var process = {
    nextTick: nextTick$1,
    title: title$1,
    browser: browser$4,
    env: env$1,
    argv: argv$1,
    version: version$2,
    versions: versions$1,
    on: on$1,
    addListener: addListener$1,
    once: once$1,
    off: off$1,
    removeListener: removeListener$1,
    removeAllListeners: removeAllListeners$1,
    emit: emit$1,
    binding: binding$1,
    cwd: cwd$1,
    chdir: chdir$1,
    umask: umask$1,
    hrtime: hrtime$1,
    platform: platform$1,
    release: release$1,
    config: config$1,
    uptime: uptime$1
  };

  var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};

  function getAugmentedNamespace(n) {
  	if (n.__esModule) return n;
  	var a = Object.defineProperty({}, '__esModule', {value: true});
  	Object.keys(n).forEach(function (k) {
  		var d = Object.getOwnPropertyDescriptor(n, k);
  		Object.defineProperty(a, k, d.get ? d : {
  			enumerable: true,
  			get: function () {
  				return n[k];
  			}
  		});
  	});
  	return a;
  }

  function commonjsRequire (path) {
  	throw new Error('Could not dynamically require "' + path + '". Please configure the dynamicRequireTargets or/and ignoreDynamicRequires option of @rollup/plugin-commonjs appropriately for this require call to work.');
  }

  var domain;

  // This constructor is used to store event handlers. Instantiating this is
  // faster than explicitly calling `Object.create(null)` to get a "clean" empty
  // object (tested with v8 v4.9).
  function EventHandlers() {}
  EventHandlers.prototype = Object.create(null);

  function EventEmitter$2() {
    EventEmitter$2.init.call(this);
  }

  // nodejs oddity
  // require('events') === require('events').EventEmitter
  EventEmitter$2.EventEmitter = EventEmitter$2;

  EventEmitter$2.usingDomains = false;

  EventEmitter$2.prototype.domain = undefined;
  EventEmitter$2.prototype._events = undefined;
  EventEmitter$2.prototype._maxListeners = undefined;

  // By default EventEmitters will print a warning if more than 10 listeners are
  // added to it. This is a useful default which helps finding memory leaks.
  EventEmitter$2.defaultMaxListeners = 10;

  EventEmitter$2.init = function() {
    this.domain = null;
    if (EventEmitter$2.usingDomains) {
      // if there is an active domain, then attach to it.
      if (domain.active ) ;
    }

    if (!this._events || this._events === Object.getPrototypeOf(this)._events) {
      this._events = new EventHandlers();
      this._eventsCount = 0;
    }

    this._maxListeners = this._maxListeners || undefined;
  };

  // Obviously not all Emitters should be limited to 10. This function allows
  // that to be increased. Set to zero for unlimited.
  EventEmitter$2.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$2.defaultMaxListeners;
    return that._maxListeners;
  }

  EventEmitter$2.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$2.prototype.emit = function emit(type) {
    var er, handler, len, args, i, events, domain;
    var doError = (type === 'error');

    events = this._events;
    if (events)
      doError = (doError && events.error == null);
    else if (!doError)
      return false;

    domain = this.domain;

    // If there is no 'error' event listener then throw.
    if (doError) {
      er = arguments[1];
      if (domain) {
        if (!er)
          er = new Error('Uncaught, unspecified "error" event');
        er.domainEmitter = this;
        er.domain = domain;
        er.domainThrown = false;
        domain.emit('error', er);
      } else if (er instanceof Error) {
        throw er; // Unhandled 'error' event
      } else {
        // At least give some kind of context to the user
        var err = new Error('Uncaught, unspecified "error" event. (' + er + ')');
        err.context = er;
        throw err;
      }
      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 = new EventHandlers();
      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 + ' ' + type + ' listeners added. ' +
                              'Use emitter.setMaxListeners() to increase limit');
          w.name = 'MaxListenersExceededWarning';
          w.emitter = target;
          w.type = type;
          w.count = existing.length;
          emitWarning$1(w);
        }
      }
    }

    return target;
  }
  function emitWarning$1(e) {
    typeof console.warn === 'function' ? console.warn(e) : console.log(e);
  }
  EventEmitter$2.prototype.addListener = function addListener(type, listener) {
    return _addListener(this, type, listener, false);
  };

  EventEmitter$2.prototype.on = EventEmitter$2.prototype.addListener;

  EventEmitter$2.prototype.prependListener =
      function prependListener(type, listener) {
        return _addListener(this, type, listener, true);
      };

  function _onceWrap(target, type, listener) {
    var fired = false;
    function g() {
      target.removeListener(type, g);
      if (!fired) {
        fired = true;
        listener.apply(target, arguments);
      }
    }
    g.listener = listener;
    return g;
  }

  EventEmitter$2.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$2.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 iff the listener was removed
  EventEmitter$2.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 && list.listener === listener)) {
          if (--this._eventsCount === 0)
            this._events = new EventHandlers();
          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; i-- > 0;) {
            if (list[i] === listener ||
                (list[i].listener && list[i].listener === listener)) {
              originalListener = list[i].listener;
              position = i;
              break;
            }
          }

          if (position < 0)
            return this;

          if (list.length === 1) {
            list[0] = undefined;
            if (--this._eventsCount === 0) {
              this._events = new EventHandlers();
              return this;
            } else {
              delete events[type];
            }
          } else {
            spliceOne(list, position);
          }

          if (events.removeListener)
            this.emit('removeListener', type, originalListener || listener);
        }

        return this;
      };
      
  // Alias for removeListener added in NodeJS 10.0
  // https://nodejs.org/api/events.html#events_emitter_off_eventname_listener
  EventEmitter$2.prototype.off = function(type, listener){
      return this.removeListener(type, listener);
  };

  EventEmitter$2.prototype.removeAllListeners =
      function removeAllListeners(type) {
        var listeners, events;

        events = this._events;
        if (!events)
          return this;

        // not listening for removeListener, no need to emit
        if (!events.removeListener) {
          if (arguments.length === 0) {
            this._events = new EventHandlers();
            this._eventsCount = 0;
          } else if (events[type]) {
            if (--this._eventsCount === 0)
              this._events = new EventHandlers();
            else
              delete events[type];
          }
          return this;
        }

        // emit removeListener for all listeners on all events
        if (arguments.length === 0) {
          var keys = Object.keys(events);
          for (var i = 0, key; i < keys.length; ++i) {
            key = keys[i];
            if (key === 'removeListener') continue;
            this.removeAllListeners(key);
          }
          this.removeAllListeners('removeListener');
          this._events = new EventHandlers();
          this._eventsCount = 0;
          return this;
        }

        listeners = events[type];

        if (typeof listeners === 'function') {
          this.removeListener(type, listeners);
        } else if (listeners) {
          // LIFO order
          do {
            this.removeListener(type, listeners[listeners.length - 1]);
          } while (listeners[0]);
        }

        return this;
      };

  EventEmitter$2.prototype.listeners = function listeners(type) {
    var evlistener;
    var ret;
    var events = this._events;

    if (!events)
      ret = [];
    else {
      evlistener = events[type];
      if (!evlistener)
        ret = [];
      else if (typeof evlistener === 'function')
        ret = [evlistener.listener || evlistener];
      else
        ret = unwrapListeners(evlistener);
    }

    return ret;
  };

  EventEmitter$2.listenerCount = function(emitter, type) {
    if (typeof emitter.listenerCount === 'function') {
      return emitter.listenerCount(type);
    } else {
      return listenerCount$1.call(emitter, type);
    }
  };

  EventEmitter$2.prototype.listenerCount = listenerCount$1;
  function listenerCount$1(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$2.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, i) {
    var copy = new Array(i);
    while (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;
  }

  var _polyfillNode_events = /*#__PURE__*/Object.freeze({
    __proto__: null,
    'default': EventEmitter$2,
    EventEmitter: EventEmitter$2
  });

  var lookup$1 = [];
  var revLookup$1 = [];
  var Arr$1 = typeof Uint8Array !== 'undefined' ? Uint8Array : Array;
  var inited$1 = false;
  function init$1 () {
    inited$1 = true;
    var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
    for (var i = 0, len = code.length; i < len; ++i) {
      lookup$1[i] = code[i];
      revLookup$1[code.charCodeAt(i)] = i;
    }

    revLookup$1['-'.charCodeAt(0)] = 62;
    revLookup$1['_'.charCodeAt(0)] = 63;
  }

  function toByteArray$1 (b64) {
    if (!inited$1) {
      init$1();
    }
    var i, j, l, tmp, placeHolders, arr;
    var len = b64.length;

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

    // the number of equal signs (place holders)
    // if there are two placeholders, than the two characters before it
    // represent one byte
    // if there is only one, then the three characters before it represent 2 bytes
    // this is just a cheap hack to not do indexOf twice
    placeHolders = b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0;

    // base64 is 4/3 + up to two characters of the original data
    arr = new Arr$1(len * 3 / 4 - placeHolders);

    // if there are placeholders, only get up to the last complete 4 chars
    l = placeHolders > 0 ? len - 4 : len;

    var L = 0;

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

    if (placeHolders === 2) {
      tmp = (revLookup$1[b64.charCodeAt(i)] << 2) | (revLookup$1[b64.charCodeAt(i + 1)] >> 4);
      arr[L++] = tmp & 0xFF;
    } else if (placeHolders === 1) {
      tmp = (revLookup$1[b64.charCodeAt(i)] << 10) | (revLookup$1[b64.charCodeAt(i + 1)] << 4) | (revLookup$1[b64.charCodeAt(i + 2)] >> 2);
      arr[L++] = (tmp >> 8) & 0xFF;
      arr[L++] = tmp & 0xFF;
    }

    return arr
  }

  function tripletToBase64$1 (num) {
    return lookup$1[num >> 18 & 0x3F] + lookup$1[num >> 12 & 0x3F] + lookup$1[num >> 6 & 0x3F] + lookup$1[num & 0x3F]
  }

  function encodeChunk$1 (uint8, start, end) {
    var tmp;
    var output = [];
    for (var i = start; i < end; i += 3) {
      tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2]);
      output.push(tripletToBase64$1(tmp));
    }
    return output.join('')
  }

  function fromByteArray$1 (uint8) {
    if (!inited$1) {
      init$1();
    }
    var tmp;
    var len = uint8.length;
    var extraBytes = len % 3; // if we have 1 byte left, pad 2 bytes
    var output = '';
    var parts = [];
    var maxChunkLength = 16383; // must be multiple of 3

    // go through the array every three bytes, we'll deal with trailing stuff later
    for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
      parts.push(encodeChunk$1(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)));
    }

    // pad the end with zeros, but make sure to not forget the extra bytes
    if (extraBytes === 1) {
      tmp = uint8[len - 1];
      output += lookup$1[tmp >> 2];
      output += lookup$1[(tmp << 4) & 0x3F];
      output += '==';
    } else if (extraBytes === 2) {
      tmp = (uint8[len - 2] << 8) + (uint8[len - 1]);
      output += lookup$1[tmp >> 10];
      output += lookup$1[(tmp >> 4) & 0x3F];
      output += lookup$1[(tmp << 2) & 0x3F];
      output += '=';
    }

    parts.push(output);

    return parts.join('')
  }

  function read$1 (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)
  }

  function write$1 (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;
  }

  var toString$2 = {}.toString;

  var isArray$2 = Array.isArray || function (arr) {
    return toString$2.call(arr) == '[object Array]';
  };

  /*!
   * The buffer module from node.js, for the browser.
   *
   * @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
   * @license  MIT
   */

  var INSPECT_MAX_BYTES$1 = 50;

  /**
   * If `Buffer.TYPED_ARRAY_SUPPORT`:
   *   === true    Use Uint8Array implementation (fastest)
   *   === false   Use Object implementation (most compatible, even IE6)
   *
   * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
   * Opera 11.6+, iOS 4.2+.
   *
   * Due to various browser bugs, sometimes the Object implementation will be used even
   * when the browser supports typed arrays.
   *
   * Note:
   *
   *   - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,
   *     See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
   *
   *   - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
   *
   *   - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
   *     incorrect length in some situations.

   * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they
   * get the Object implementation, which is slower but behaves correctly.
   */
  Buffer$1.TYPED_ARRAY_SUPPORT = global$2.TYPED_ARRAY_SUPPORT !== undefined
    ? global$2.TYPED_ARRAY_SUPPORT
    : true;

  function kMaxLength$1 () {
    return Buffer$1.TYPED_ARRAY_SUPPORT
      ? 0x7fffffff
      : 0x3fffffff
  }

  function createBuffer$1 (that, length) {
    if (kMaxLength$1() < length) {
      throw new RangeError('Invalid typed array length')
    }
    if (Buffer$1.TYPED_ARRAY_SUPPORT) {
      // Return an augmented `Uint8Array` instance, for best performance
      that = new Uint8Array(length);
      that.__proto__ = Buffer$1.prototype;
    } else {
      // Fallback: Return an object instance of the Buffer class
      if (that === null) {
        that = new Buffer$1(length);
      }
      that.length = length;
    }

    return that
  }

  /**
   * The Buffer constructor returns instances of `Uint8Array` that have their
   * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
   * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
   * and the `Uint8Array` methods. Square bracket notation works as expected -- it
   * returns a single octet.
   *
   * The `Uint8Array` prototype remains unmodified.
   */

  function Buffer$1 (arg, encodingOrOffset, length) {
    if (!Buffer$1.TYPED_ARRAY_SUPPORT && !(this instanceof Buffer$1)) {
      return new Buffer$1(arg, encodingOrOffset, length)
    }

    // Common case.
    if (typeof arg === 'number') {
      if (typeof encodingOrOffset === 'string') {
        throw new Error(
          'If encoding is specified then the first argument must be a string'
        )
      }
      return allocUnsafe$1(this, arg)
    }
    return from$1(this, arg, encodingOrOffset, length)
  }

  Buffer$1.poolSize = 8192; // not used by this implementation

  // TODO: Legacy, not needed anymore. Remove in next major version.
  Buffer$1._augment = function (arr) {
    arr.__proto__ = Buffer$1.prototype;
    return arr
  };

  function from$1 (that, value, encodingOrOffset, length) {
    if (typeof value === 'number') {
      throw new TypeError('"value" argument must not be a number')
    }

    if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {
      return fromArrayBuffer$1(that, value, encodingOrOffset, length)
    }

    if (typeof value === 'string') {
      return fromString$1(that, value, encodingOrOffset)
    }

    return fromObject$1(that, value)
  }

  /**
   * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
   * if value is a number.
   * Buffer.from(str[, encoding])
   * Buffer.from(array)
   * Buffer.from(buffer)
   * Buffer.from(arrayBuffer[, byteOffset[, length]])
   **/
  Buffer$1.from = function (value, encodingOrOffset, length) {
    return from$1(null, value, encodingOrOffset, length)
  };

  if (Buffer$1.TYPED_ARRAY_SUPPORT) {
    Buffer$1.prototype.__proto__ = Uint8Array.prototype;
    Buffer$1.__proto__ = Uint8Array;
  }

  function assertSize$1 (size) {
    if (typeof size !== 'number') {
      throw new TypeError('"size" argument must be a number')
    } else if (size < 0) {
      throw new RangeError('"size" argument must not be negative')
    }
  }

  function alloc$1 (that, size, fill, encoding) {
    assertSize$1(size);
    if (size <= 0) {
      return createBuffer$1(that, size)
    }
    if (fill !== undefined) {
      // Only pay attention to encoding if it's a string. This
      // prevents accidentally sending in a number that would
      // be interpretted as a start offset.
      return typeof encoding === 'string'
        ? createBuffer$1(that, size).fill(fill, encoding)
        : createBuffer$1(that, size).fill(fill)
    }
    return createBuffer$1(that, size)
  }

  /**
   * Creates a new filled Buffer instance.
   * alloc(size[, fill[, encoding]])
   **/
  Buffer$1.alloc = function (size, fill, encoding) {
    return alloc$1(null, size, fill, encoding)
  };

  function allocUnsafe$1 (that, size) {
    assertSize$1(size);
    that = createBuffer$1(that, size < 0 ? 0 : checked$1(size) | 0);
    if (!Buffer$1.TYPED_ARRAY_SUPPORT) {
      for (var i = 0; i < size; ++i) {
        that[i] = 0;
      }
    }
    return that
  }

  /**
   * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
   * */
  Buffer$1.allocUnsafe = function (size) {
    return allocUnsafe$1(null, size)
  };
  /**
   * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
   */
  Buffer$1.allocUnsafeSlow = function (size) {
    return allocUnsafe$1(null, size)
  };

  function fromString$1 (that, string, encoding) {
    if (typeof encoding !== 'string' || encoding === '') {
      encoding = 'utf8';
    }

    if (!Buffer$1.isEncoding(encoding)) {
      throw new TypeError('"encoding" must be a valid string encoding')
    }

    var length = byteLength$1(string, encoding) | 0;
    that = createBuffer$1(that, length);

    var actual = that.write(string, encoding);

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

    return that
  }

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

  function fromArrayBuffer$1 (that, array, byteOffset, length) {
    array.byteLength; // this throws if `array` is not a valid ArrayBuffer

    if (byteOffset < 0 || array.byteLength < byteOffset) {
      throw new RangeError('\'offset\' is out of bounds')
    }

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

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

    if (Buffer$1.TYPED_ARRAY_SUPPORT) {
      // Return an augmented `Uint8Array` instance, for best performance
      that = array;
      that.__proto__ = Buffer$1.prototype;
    } else {
      // Fallback: Return an object instance of the Buffer class
      that = fromArrayLike$1(that, array);
    }
    return that
  }

  function fromObject$1 (that, obj) {
    if (internalIsBuffer$1(obj)) {
      var len = checked$1(obj.length) | 0;
      that = createBuffer$1(that, len);

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

      obj.copy(that, 0, 0, len);
      return that
    }

    if (obj) {
      if ((typeof ArrayBuffer !== 'undefined' &&
          obj.buffer instanceof ArrayBuffer) || 'length' in obj) {
        if (typeof obj.length !== 'number' || isnan$1(obj.length)) {
          return createBuffer$1(that, 0)
        }
        return fromArrayLike$1(that, obj)
      }

      if (obj.type === 'Buffer' && isArray$2(obj.data)) {
        return fromArrayLike$1(that, obj.data)
      }
    }

    throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')
  }

  function checked$1 (length) {
    // Note: cannot use `length < kMaxLength()` here because that fails when
    // length is NaN (which is otherwise coerced to zero.)
    if (length >= kMaxLength$1()) {
      throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
                           'size: 0x' + kMaxLength$1().toString(16) + ' bytes')
    }
    return length | 0
  }
  Buffer$1.isBuffer = isBuffer$2;
  function internalIsBuffer$1 (b) {
    return !!(b != null && b._isBuffer)
  }

  Buffer$1.compare = function compare (a, b) {
    if (!internalIsBuffer$1(a) || !internalIsBuffer$1(b)) {
      throw new TypeError('Arguments must be Buffers')
    }

    if (a === b) return 0

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

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

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

  Buffer$1.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$1.concat = function concat (list, length) {
    if (!isArray$2(list)) {
      throw new TypeError('"list" argument must be an Array of Buffers')
    }

    if (list.length === 0) {
      return Buffer$1.alloc(0)
    }

    var i;
    if (length === undefined) {
      length = 0;
      for (i = 0; i < list.length; ++i) {
        length += list[i].length;
      }
    }

    var buffer = Buffer$1.allocUnsafe(length);
    var pos = 0;
    for (i = 0; i < list.length; ++i) {
      var buf = list[i];
      if (!internalIsBuffer$1(buf)) {
        throw new TypeError('"list" argument must be an Array of Buffers')
      }
      buf.copy(buffer, pos);
      pos += buf.length;
    }
    return buffer
  };

  function byteLength$1 (string, encoding) {
    if (internalIsBuffer$1(string)) {
      return string.length
    }
    if (typeof ArrayBuffer !== 'undefined' && typeof ArrayBuffer.isView === 'function' &&
        (ArrayBuffer.isView(string) || string instanceof ArrayBuffer)) {
      return string.byteLength
    }
    if (typeof string !== 'string') {
      string = '' + string;
    }

    var len = string.length;
    if (len === 0) return 0

    // Use a for loop to avoid recursion
    var loweredCase = false;
    for (;;) {
      switch (encoding) {
        case 'ascii':
        case 'latin1':
        case 'binary':
          return len
        case 'utf8':
        case 'utf-8':
        case undefined:
          return utf8ToBytes$1(string).length
        case 'ucs2':
        case 'ucs-2':
        case 'utf16le':
        case 'utf-16le':
          return len * 2
        case 'hex':
          return len >>> 1
        case 'base64':
          return base64ToBytes$1(string).length
        default:
          if (loweredCase) return utf8ToBytes$1(string).length // assume utf8
          encoding = ('' + encoding).toLowerCase();
          loweredCase = true;
      }
    }
  }
  Buffer$1.byteLength = byteLength$1;

  function slowToString$1 (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$1(this, start, end)

        case 'utf8':
        case 'utf-8':
          return utf8Slice$1(this, start, end)

        case 'ascii':
          return asciiSlice$1(this, start, end)

        case 'latin1':
        case 'binary':
          return latin1Slice$1(this, start, end)

        case 'base64':
          return base64Slice$1(this, start, end)

        case 'ucs2':
        case 'ucs-2':
        case 'utf16le':
        case 'utf-16le':
          return utf16leSlice$1(this, start, end)

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

  // The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect
  // Buffer instances.
  Buffer$1.prototype._isBuffer = true;

  function swap$1 (b, n, m) {
    var i = b[n];
    b[n] = b[m];
    b[m] = i;
  }

  Buffer$1.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$1(this, i, i + 1);
    }
    return this
  };

  Buffer$1.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$1(this, i, i + 3);
      swap$1(this, i + 1, i + 2);
    }
    return this
  };

  Buffer$1.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$1(this, i, i + 7);
      swap$1(this, i + 1, i + 6);
      swap$1(this, i + 2, i + 5);
      swap$1(this, i + 3, i + 4);
    }
    return this
  };

  Buffer$1.prototype.toString = function toString () {
    var length = this.length | 0;
    if (length === 0) return ''
    if (arguments.length === 0) return utf8Slice$1(this, 0, length)
    return slowToString$1.apply(this, arguments)
  };

  Buffer$1.prototype.equals = function equals (b) {
    if (!internalIsBuffer$1(b)) throw new TypeError('Argument must be a Buffer')
    if (this === b) return true
    return Buffer$1.compare(this, b) === 0
  };

  Buffer$1.prototype.inspect = function inspect () {
    var str = '';
    var max = INSPECT_MAX_BYTES$1;
    if (this.length > 0) {
      str = this.toString('hex', 0, max).match(/.{2}/g).join(' ');
      if (this.length > max) str += ' ... ';
    }
    return '<Buffer ' + str + '>'
  };

  Buffer$1.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
    if (!internalIsBuffer$1(target)) {
      throw new TypeError('Argument must be a Buffer')
    }

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

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

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

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

    if (this === target) return 0

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

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

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

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

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

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

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

    // Normalize val
    if (typeof val === 'string') {
      val = Buffer$1.from(val, encoding);
    }

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

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

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

  Buffer$1.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
    return bidirectionalIndexOf$1(this, val, byteOffset, encoding, true)
  };

  Buffer$1.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
    return bidirectionalIndexOf$1(this, val, byteOffset, encoding, false)
  };

  function hexWrite$1 (buf, string, offset, length) {
    offset = Number(offset) || 0;
    var remaining = buf.length - offset;
    if (!length) {
      length = remaining;
    } else {
      length = Number(length);
      if (length > remaining) {
        length = remaining;
      }
    }

    // must be an even number of digits
    var strLen = string.length;
    if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')

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

  function utf8Write$1 (buf, string, offset, length) {
    return blitBuffer$1(utf8ToBytes$1(string, buf.length - offset), buf, offset, length)
  }

  function asciiWrite$1 (buf, string, offset, length) {
    return blitBuffer$1(asciiToBytes$1(string), buf, offset, length)
  }

  function latin1Write$1 (buf, string, offset, length) {
    return asciiWrite$1(buf, string, offset, length)
  }

  function base64Write$1 (buf, string, offset, length) {
    return blitBuffer$1(base64ToBytes$1(string), buf, offset, length)
  }

  function ucs2Write$1 (buf, string, offset, length) {
    return blitBuffer$1(utf16leToBytes$1(string, buf.length - offset), buf, offset, length)
  }

  Buffer$1.prototype.write = function write (string, offset, length, encoding) {
    // Buffer#write(string)
    if (offset === undefined) {
      encoding = 'utf8';
      length = this.length;
      offset = 0;
    // Buffer#write(string, encoding)
    } else if (length === undefined && typeof offset === 'string') {
      encoding = offset;
      length = this.length;
      offset = 0;
    // Buffer#write(string, offset[, length][, encoding])
    } else if (isFinite(offset)) {
      offset = offset | 0;
      if (isFinite(length)) {
        length = length | 0;
        if (encoding === undefined) encoding = 'utf8';
      } else {
        encoding = length;
        length = undefined;
      }
    // legacy write(string, encoding, offset, length) - remove in v0.13
    } else {
      throw new Error(
        'Buffer.write(string, encoding, offset[, length]) is no longer supported'
      )
    }

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

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

    if (!encoding) encoding = 'utf8';

    var loweredCase = false;
    for (;;) {
      switch (encoding) {
        case 'hex':
          return hexWrite$1(this, string, offset, length)

        case 'utf8':
        case 'utf-8':
          return utf8Write$1(this, string, offset, length)

        case 'ascii':
          return asciiWrite$1(this, string, offset, length)

        case 'latin1':
        case 'binary':
          return latin1Write$1(this, string, offset, length)

        case 'base64':
          // Warning: maxLength not taken into account in base64Write
          return base64Write$1(this, string, offset, length)

        case 'ucs2':
        case 'ucs-2':
        case 'utf16le':
        case 'utf-16le':
          return ucs2Write$1(this, string, offset, length)

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

  Buffer$1.prototype.toJSON = function toJSON () {
    return {
      type: 'Buffer',
      data: Array.prototype.slice.call(this._arr || this, 0)
    }
  };

  function base64Slice$1 (buf, start, end) {
    if (start === 0 && end === buf.length) {
      return fromByteArray$1(buf)
    } else {
      return fromByteArray$1(buf.slice(start, end))
    }
  }

  function utf8Slice$1 (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$1(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$1 = 0x1000;

  function decodeCodePointsArray$1 (codePoints) {
    var len = codePoints.length;
    if (len <= MAX_ARGUMENTS_LENGTH$1) {
      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$1)
      );
    }
    return res
  }

  function asciiSlice$1 (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$1 (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$1 (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$1(buf[i]);
    }
    return out
  }

  function utf16leSlice$1 (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$1.prototype.slice = function slice (start, end) {
    var len = this.length;
    start = ~~start;
    end = end === undefined ? len : ~~end;

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

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

    if (end < start) end = start;

    var newBuf;
    if (Buffer$1.TYPED_ARRAY_SUPPORT) {
      newBuf = this.subarray(start, end);
      newBuf.__proto__ = Buffer$1.prototype;
    } else {
      var sliceLen = end - start;
      newBuf = new Buffer$1(sliceLen, undefined);
      for (var i = 0; i < sliceLen; ++i) {
        newBuf[i] = this[i + start];
      }
    }

    return newBuf
  };

  /*
   * Need to make sure that buffer isn't trying to write out of bounds.
   */
  function checkOffset$1 (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$1.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
    offset = offset | 0;
    byteLength = byteLength | 0;
    if (!noAssert) checkOffset$1(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$1.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
    offset = offset | 0;
    byteLength = byteLength | 0;
    if (!noAssert) {
      checkOffset$1(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$1.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
    if (!noAssert) checkOffset$1(offset, 1, this.length);
    return this[offset]
  };

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

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

  Buffer$1.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
    if (!noAssert) checkOffset$1(offset, 4, this.length);

    return ((this[offset]) |
        (this[offset + 1] << 8) |
        (this[offset + 2] << 16)) +
        (this[offset + 3] * 0x1000000)
  };

  Buffer$1.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
    if (!noAssert) checkOffset$1(offset, 4, this.length);

    return (this[offset] * 0x1000000) +
      ((this[offset + 1] << 16) |
      (this[offset + 2] << 8) |
      this[offset + 3])
  };

  Buffer$1.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
    offset = offset | 0;
    byteLength = byteLength | 0;
    if (!noAssert) checkOffset$1(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$1.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
    offset = offset | 0;
    byteLength = byteLength | 0;
    if (!noAssert) checkOffset$1(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$1.prototype.readInt8 = function readInt8 (offset, noAssert) {
    if (!noAssert) checkOffset$1(offset, 1, this.length);
    if (!(this[offset] & 0x80)) return (this[offset])
    return ((0xff - this[offset] + 1) * -1)
  };

  Buffer$1.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
    if (!noAssert) checkOffset$1(offset, 2, this.length);
    var val = this[offset] | (this[offset + 1] << 8);
    return (val & 0x8000) ? val | 0xFFFF0000 : val
  };

  Buffer$1.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
    if (!noAssert) checkOffset$1(offset, 2, this.length);
    var val = this[offset + 1] | (this[offset] << 8);
    return (val & 0x8000) ? val | 0xFFFF0000 : val
  };

  Buffer$1.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
    if (!noAssert) checkOffset$1(offset, 4, this.length);

    return (this[offset]) |
      (this[offset + 1] << 8) |
      (this[offset + 2] << 16) |
      (this[offset + 3] << 24)
  };

  Buffer$1.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
    if (!noAssert) checkOffset$1(offset, 4, this.length);

    return (this[offset] << 24) |
      (this[offset + 1] << 16) |
      (this[offset + 2] << 8) |
      (this[offset + 3])
  };

  Buffer$1.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
    if (!noAssert) checkOffset$1(offset, 4, this.length);
    return read$1(this, offset, true, 23, 4)
  };

  Buffer$1.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
    if (!noAssert) checkOffset$1(offset, 4, this.length);
    return read$1(this, offset, false, 23, 4)
  };

  Buffer$1.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
    if (!noAssert) checkOffset$1(offset, 8, this.length);
    return read$1(this, offset, true, 52, 8)
  };

  Buffer$1.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
    if (!noAssert) checkOffset$1(offset, 8, this.length);
    return read$1(this, offset, false, 52, 8)
  };

  function checkInt$1 (buf, value, offset, ext, max, min) {
    if (!internalIsBuffer$1(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$1.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$1(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$1.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$1(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$1.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
    value = +value;
    offset = offset | 0;
    if (!noAssert) checkInt$1(this, value, offset, 1, 0xff, 0);
    if (!Buffer$1.TYPED_ARRAY_SUPPORT) value = Math.floor(value);
    this[offset] = (value & 0xff);
    return offset + 1
  };

  function objectWriteUInt16$1 (buf, value, offset, littleEndian) {
    if (value < 0) value = 0xffff + value + 1;
    for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; ++i) {
      buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
        (littleEndian ? i : 1 - i) * 8;
    }
  }

  Buffer$1.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
    value = +value;
    offset = offset | 0;
    if (!noAssert) checkInt$1(this, value, offset, 2, 0xffff, 0);
    if (Buffer$1.TYPED_ARRAY_SUPPORT) {
      this[offset] = (value & 0xff);
      this[offset + 1] = (value >>> 8);
    } else {
      objectWriteUInt16$1(this, value, offset, true);
    }
    return offset + 2
  };

  Buffer$1.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
    value = +value;
    offset = offset | 0;
    if (!noAssert) checkInt$1(this, value, offset, 2, 0xffff, 0);
    if (Buffer$1.TYPED_ARRAY_SUPPORT) {
      this[offset] = (value >>> 8);
      this[offset + 1] = (value & 0xff);
    } else {
      objectWriteUInt16$1(this, value, offset, false);
    }
    return offset + 2
  };

  function objectWriteUInt32$1 (buf, value, offset, littleEndian) {
    if (value < 0) value = 0xffffffff + value + 1;
    for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; ++i) {
      buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff;
    }
  }

  Buffer$1.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
    value = +value;
    offset = offset | 0;
    if (!noAssert) checkInt$1(this, value, offset, 4, 0xffffffff, 0);
    if (Buffer$1.TYPED_ARRAY_SUPPORT) {
      this[offset + 3] = (value >>> 24);
      this[offset + 2] = (value >>> 16);
      this[offset + 1] = (value >>> 8);
      this[offset] = (value & 0xff);
    } else {
      objectWriteUInt32$1(this, value, offset, true);
    }
    return offset + 4
  };

  Buffer$1.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
    value = +value;
    offset = offset | 0;
    if (!noAssert) checkInt$1(this, value, offset, 4, 0xffffffff, 0);
    if (Buffer$1.TYPED_ARRAY_SUPPORT) {
      this[offset] = (value >>> 24);
      this[offset + 1] = (value >>> 16);
      this[offset + 2] = (value >>> 8);
      this[offset + 3] = (value & 0xff);
    } else {
      objectWriteUInt32$1(this, value, offset, false);
    }
    return offset + 4
  };

  Buffer$1.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
    value = +value;
    offset = offset | 0;
    if (!noAssert) {
      var limit = Math.pow(2, 8 * byteLength - 1);

      checkInt$1(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$1.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
    value = +value;
    offset = offset | 0;
    if (!noAssert) {
      var limit = Math.pow(2, 8 * byteLength - 1);

      checkInt$1(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$1.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
    value = +value;
    offset = offset | 0;
    if (!noAssert) checkInt$1(this, value, offset, 1, 0x7f, -0x80);
    if (!Buffer$1.TYPED_ARRAY_SUPPORT) value = Math.floor(value);
    if (value < 0) value = 0xff + value + 1;
    this[offset] = (value & 0xff);
    return offset + 1
  };

  Buffer$1.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
    value = +value;
    offset = offset | 0;
    if (!noAssert) checkInt$1(this, value, offset, 2, 0x7fff, -0x8000);
    if (Buffer$1.TYPED_ARRAY_SUPPORT) {
      this[offset] = (value & 0xff);
      this[offset + 1] = (value >>> 8);
    } else {
      objectWriteUInt16$1(this, value, offset, true);
    }
    return offset + 2
  };

  Buffer$1.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
    value = +value;
    offset = offset | 0;
    if (!noAssert) checkInt$1(this, value, offset, 2, 0x7fff, -0x8000);
    if (Buffer$1.TYPED_ARRAY_SUPPORT) {
      this[offset] = (value >>> 8);
      this[offset + 1] = (value & 0xff);
    } else {
      objectWriteUInt16$1(this, value, offset, false);
    }
    return offset + 2
  };

  Buffer$1.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
    value = +value;
    offset = offset | 0;
    if (!noAssert) checkInt$1(this, value, offset, 4, 0x7fffffff, -0x80000000);
    if (Buffer$1.TYPED_ARRAY_SUPPORT) {
      this[offset] = (value & 0xff);
      this[offset + 1] = (value >>> 8);
      this[offset + 2] = (value >>> 16);
      this[offset + 3] = (value >>> 24);
    } else {
      objectWriteUInt32$1(this, value, offset, true);
    }
    return offset + 4
  };

  Buffer$1.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
    value = +value;
    offset = offset | 0;
    if (!noAssert) checkInt$1(this, value, offset, 4, 0x7fffffff, -0x80000000);
    if (value < 0) value = 0xffffffff + value + 1;
    if (Buffer$1.TYPED_ARRAY_SUPPORT) {
      this[offset] = (value >>> 24);
      this[offset + 1] = (value >>> 16);
      this[offset + 2] = (value >>> 8);
      this[offset + 3] = (value & 0xff);
    } else {
      objectWriteUInt32$1(this, value, offset, false);
    }
    return offset + 4
  };

  function checkIEEE754$1 (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$1 (buf, value, offset, littleEndian, noAssert) {
    if (!noAssert) {
      checkIEEE754$1(buf, value, offset, 4);
    }
    write$1(buf, value, offset, littleEndian, 23, 4);
    return offset + 4
  }

  Buffer$1.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
    return writeFloat$1(this, value, offset, true, noAssert)
  };

  Buffer$1.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
    return writeFloat$1(this, value, offset, false, noAssert)
  };

  function writeDouble$1 (buf, value, offset, littleEndian, noAssert) {
    if (!noAssert) {
      checkIEEE754$1(buf, value, offset, 8);
    }
    write$1(buf, value, offset, littleEndian, 52, 8);
    return offset + 8
  }

  Buffer$1.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
    return writeDouble$1(this, value, offset, true, noAssert)
  };

  Buffer$1.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
    return writeDouble$1(this, value, offset, false, noAssert)
  };

  // copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
  Buffer$1.prototype.copy = function copy (target, targetStart, start, end) {
    if (!start) start = 0;
    if (!end && end !== 0) end = this.length;
    if (targetStart >= target.length) targetStart = target.length;
    if (!targetStart) targetStart = 0;
    if (end > 0 && end < start) end = start;

    // Copy 0 bytes; we're done
    if (end === start) return 0
    if (target.length === 0 || this.length === 0) return 0

    // Fatal error conditions
    if (targetStart < 0) {
      throw new RangeError('targetStart out of bounds')
    }
    if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
    if (end < 0) throw new RangeError('sourceEnd out of bounds')

    // Are we oob?
    if (end > this.length) end = this.length;
    if (target.length - targetStart < end - start) {
      end = target.length - targetStart + start;
    }

    var len = end - start;
    var i;

    if (this === target && start < targetStart && targetStart < end) {
      // descending copy from end
      for (i = len - 1; i >= 0; --i) {
        target[i + targetStart] = this[i + start];
      }
    } else if (len < 1000 || !Buffer$1.TYPED_ARRAY_SUPPORT) {
      // ascending copy from start
      for (i = 0; i < len; ++i) {
        target[i + targetStart] = this[i + start];
      }
    } else {
      Uint8Array.prototype.set.call(
        target,
        this.subarray(start, start + len),
        targetStart
      );
    }

    return len
  };

  // Usage:
  //    buffer.fill(number[, offset[, end]])
  //    buffer.fill(buffer[, offset[, end]])
  //    buffer.fill(string[, offset[, end]][, encoding])
  Buffer$1.prototype.fill = function fill (val, start, end, encoding) {
    // Handle string cases:
    if (typeof val === 'string') {
      if (typeof start === 'string') {
        encoding = start;
        start = 0;
        end = this.length;
      } else if (typeof end === 'string') {
        encoding = end;
        end = this.length;
      }
      if (val.length === 1) {
        var code = val.charCodeAt(0);
        if (code < 256) {
          val = code;
        }
      }
      if (encoding !== undefined && typeof encoding !== 'string') {
        throw new TypeError('encoding must be a string')
      }
      if (typeof encoding === 'string' && !Buffer$1.isEncoding(encoding)) {
        throw new TypeError('Unknown encoding: ' + encoding)
      }
    } else if (typeof val === 'number') {
      val = val & 255;
    }

    // Invalid ranges are not set to a default, so can range check early.
    if (start < 0 || this.length < start || this.length < end) {
      throw new RangeError('Out of range index')
    }

    if (end <= start) {
      return this
    }

    start = start >>> 0;
    end = end === undefined ? this.length : end >>> 0;

    if (!val) val = 0;

    var i;
    if (typeof val === 'number') {
      for (i = start; i < end; ++i) {
        this[i] = val;
      }
    } else {
      var bytes = internalIsBuffer$1(val)
        ? val
        : utf8ToBytes$1(new Buffer$1(val, encoding).toString());
      var len = bytes.length;
      for (i = 0; i < end - start; ++i) {
        this[i + start] = bytes[i % len];
      }
    }

    return this
  };

  // HELPER FUNCTIONS
  // ================

  var INVALID_BASE64_RE$1 = /[^+\/0-9A-Za-z-_]/g;

  function base64clean$1 (str) {
    // Node strips out invalid characters like \n and \t from the string, base64-js does not
    str = stringtrim$1(str).replace(INVALID_BASE64_RE$1, '');
    // Node converts strings with length < 2 to ''
    if (str.length < 2) return ''
    // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
    while (str.length % 4 !== 0) {
      str = str + '=';
    }
    return str
  }

  function stringtrim$1 (str) {
    if (str.trim) return str.trim()
    return str.replace(/^\s+|\s+$/g, '')
  }

  function toHex$1 (n) {
    if (n < 16) return '0' + n.toString(16)
    return n.toString(16)
  }

  function utf8ToBytes$1 (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$1 (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$1 (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$1 (str) {
    return toByteArray$1(base64clean$1(str))
  }

  function blitBuffer$1 (src, dst, offset, length) {
    for (var i = 0; i < length; ++i) {
      if ((i + offset >= dst.length) || (i >= src.length)) break
      dst[i + offset] = src[i];
    }
    return i
  }

  function isnan$1 (val) {
    return val !== val // eslint-disable-line no-self-compare
  }


  // the following is from is-buffer, also by Feross Aboukhadijeh and with same lisence
  // The _isBuffer check is for Safari 5-7 support, because it's missing
  // Object.prototype.constructor. Remove this eventually
  function isBuffer$2(obj) {
    return obj != null && (!!obj._isBuffer || isFastBuffer$1(obj) || isSlowBuffer$1(obj))
  }

  function isFastBuffer$1 (obj) {
    return !!obj.constructor && typeof obj.constructor.isBuffer === 'function' && obj.constructor.isBuffer(obj)
  }

  // For Node v0.10 support. Remove this eventually.
  function isSlowBuffer$1 (obj) {
    return typeof obj.readFloatLE === 'function' && typeof obj.slice === 'function' && isFastBuffer$1(obj.slice(0, 0))
  }

  // shim for using process in browser
  // based off https://github.com/defunctzombie/node-process/blob/master/browser.js

  function defaultSetTimout() {
      throw new Error('setTimeout has not been defined');
  }
  function defaultClearTimeout () {
      throw new Error('clearTimeout has not been defined');
  }
  var cachedSetTimeout = defaultSetTimout;
  var cachedClearTimeout = defaultClearTimeout;
  if (typeof global$2.setTimeout === 'function') {
      cachedSetTimeout = setTimeout;
  }
  if (typeof global$2.clearTimeout === 'function') {
      cachedClearTimeout = clearTimeout;
  }

  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);
  }
  function nextTick(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);
  };
  var title = 'browser';
  var platform = 'browser';
  var browser$3 = true;
  var env = {};
  var argv = [];
  var version$1 = ''; // empty string to avoid regexp issues
  var versions = {};
  var release = {};
  var config = {};

  function noop() {}

  var on = noop;
  var addListener = noop;
  var once = noop;
  var off = noop;
  var removeListener = noop;
  var removeAllListeners = noop;
  var emit = noop;

  function binding(name) {
      throw new Error('process.binding is not supported');
  }

  function cwd () { return '/' }
  function chdir (dir) {
      throw new Error('process.chdir is not supported');
  }function umask() { return 0; }

  // from https://github.com/kumavis/browser-process-hrtime/blob/master/index.js
  var performance = global$2.performance || {};
  var performanceNow =
    performance.now        ||
    performance.mozNow     ||
    performance.msNow      ||
    performance.oNow       ||
    performance.webkitNow  ||
    function(){ return (new Date()).getTime() };

  // generate timestamp or delta
  // see http://nodejs.org/api/process.html#process_process_hrtime
  function hrtime(previousTimestamp){
    var clocktime = performanceNow.call(performance)*1e-3;
    var seconds = Math.floor(clocktime);
    var nanoseconds = Math.floor((clocktime%1)*1e9);
    if (previousTimestamp) {
      seconds = seconds - previousTimestamp[0];
      nanoseconds = nanoseconds - previousTimestamp[1];
      if (nanoseconds<0) {
        seconds--;
        nanoseconds += 1e9;
      }
    }
    return [seconds,nanoseconds]
  }

  var startTime = new Date();
  function uptime() {
    var currentTime = new Date();
    var dif = currentTime - startTime;
    return dif / 1000;
  }

  var browser$1$1 = {
    nextTick: nextTick,
    title: title,
    browser: browser$3,
    env: env,
    argv: argv,
    version: version$1,
    versions: versions,
    on: on,
    addListener: addListener,
    once: once,
    off: off,
    removeListener: removeListener,
    removeAllListeners: removeAllListeners,
    emit: emit,
    binding: binding,
    cwd: cwd,
    chdir: chdir,
    umask: umask,
    hrtime: hrtime,
    platform: platform,
    release: release,
    config: config,
    uptime: uptime
  };

  var inherits$2;
  if (typeof Object.create === 'function'){
    inherits$2 = function inherits(ctor, superCtor) {
      // implementation from standard node.js 'util' module
      ctor.super_ = superCtor;
      ctor.prototype = Object.create(superCtor.prototype, {
        constructor: {
          value: ctor,
          enumerable: false,
          writable: true,
          configurable: true
        }
      });
    };
  } else {
    inherits$2 = function inherits(ctor, superCtor) {
      ctor.super_ = superCtor;
      var TempCtor = function () {};
      TempCtor.prototype = superCtor.prototype;
      ctor.prototype = new TempCtor();
      ctor.prototype.constructor = ctor;
    };
  }
  var inherits$3 = inherits$2;

  var formatRegExp = /%[sdj%]/g;
  function format$1(f) {
    if (!isString$1(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.
  function deprecate$1(fn, msg) {
    // Allow for deprecating things in the process of starting up.
    if (isUndefined(global$2.process)) {
      return function() {
        return deprecate$1(fn, msg).apply(this, arguments);
      };
    }

    if (browser$1$1.noDeprecation === true) {
      return fn;
    }

    var warned = false;
    function deprecated() {
      if (!warned) {
        if (browser$1$1.throwDeprecation) {
          throw new Error(msg);
        } else if (browser$1$1.traceDeprecation) {
          console.trace(msg);
        } else {
          console.error(msg);
        }
        warned = true;
      }
      return fn.apply(this, arguments);
    }

    return deprecated;
  }

  var debugs = {};
  var debugEnviron;
  function debuglog(set) {
    if (isUndefined(debugEnviron))
      debugEnviron = browser$1$1.env.NODE_DEBUG || '';
    set = set.toUpperCase();
    if (!debugs[set]) {
      if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
        var pid = 0;
        debugs[set] = function() {
          var msg = format$1.apply(null, 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
      _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);
  }

  // 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 !== 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$1(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$1(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$1(value)) {
        return formatError(value);
      }
    }

    var base = '', array = false, braces = ['{', '}'];

    // Make Array say that they are Array
    if (isArray$1(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$1(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$1(value)) {
      var simple = '\'' + JSON.stringify(value).replace(/^"|"$/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 length = output.reduce(function(prev, cur) {
      if (cur.indexOf('\n') >= 0) ;
      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$1(ar) {
    return Array.isArray(ar);
  }

  function isBoolean(arg) {
    return typeof arg === 'boolean';
  }

  function isNull(arg) {
    return arg === null;
  }

  function isNullOrUndefined(arg) {
    return arg == null;
  }

  function isNumber(arg) {
    return typeof arg === 'number';
  }

  function isString$1(arg) {
    return typeof arg === 'string';
  }

  function isSymbol(arg) {
    return typeof arg === 'symbol';
  }

  function isUndefined(arg) {
    return arg === void 0;
  }

  function isRegExp(re) {
    return isObject(re) && objectToString(re) === '[object RegExp]';
  }

  function isObject(arg) {
    return typeof arg === 'object' && arg !== null;
  }

  function isDate(d) {
    return isObject(d) && objectToString(d) === '[object Date]';
  }

  function isError$1(e) {
    return isObject(e) &&
        (objectToString(e) === '[object Error]' || e instanceof Error);
  }

  function isFunction(arg) {
    return typeof arg === 'function';
  }

  function isPrimitive(arg) {
    return arg === null ||
           typeof arg === 'boolean' ||
           typeof arg === 'number' ||
           typeof arg === 'string' ||
           typeof arg === 'symbol' ||  // ES6 symbol
           typeof arg === 'undefined';
  }

  function isBuffer$1(maybeBuf) {
    return Buffer$1.isBuffer(maybeBuf);
  }

  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
  function log() {
    console.log('%s - %s', timestamp(), format$1.apply(null, arguments));
  }

  function _extend(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);
  }

  var _polyfillNode_util = {
    inherits: inherits$3,
    _extend: _extend,
    log: log,
    isBuffer: isBuffer$1,
    isPrimitive: isPrimitive,
    isFunction: isFunction,
    isError: isError$1,
    isDate: isDate,
    isObject: isObject,
    isRegExp: isRegExp,
    isUndefined: isUndefined,
    isSymbol: isSymbol,
    isString: isString$1,
    isNumber: isNumber,
    isNullOrUndefined: isNullOrUndefined,
    isNull: isNull,
    isBoolean: isBoolean,
    isArray: isArray$1,
    inspect: inspect,
    deprecate: deprecate$1,
    format: format$1,
    debuglog: debuglog
  };

  var _polyfillNode_util$1 = /*#__PURE__*/Object.freeze({
    __proto__: null,
    format: format$1,
    deprecate: deprecate$1,
    debuglog: debuglog,
    inspect: inspect,
    isArray: isArray$1,
    isBoolean: isBoolean,
    isNull: isNull,
    isNullOrUndefined: isNullOrUndefined,
    isNumber: isNumber,
    isString: isString$1,
    isSymbol: isSymbol,
    isUndefined: isUndefined,
    isRegExp: isRegExp,
    isObject: isObject,
    isDate: isDate,
    isError: isError$1,
    isFunction: isFunction,
    isPrimitive: isPrimitive,
    isBuffer: isBuffer$1,
    log: log,
    inherits: inherits$3,
    _extend: _extend,
    'default': _polyfillNode_util
  });

  function BufferList() {
    this.head = null;
    this.tail = null;
    this.length = 0;
  }

  BufferList.prototype.push = function (v) {
    var entry = { data: v, next: null };
    if (this.length > 0) this.tail.next = entry;else this.head = entry;
    this.tail = entry;
    ++this.length;
  };

  BufferList.prototype.unshift = function (v) {
    var entry = { data: v, next: this.head };
    if (this.length === 0) this.tail = entry;
    this.head = entry;
    ++this.length;
  };

  BufferList.prototype.shift = function () {
    if (this.length === 0) return;
    var ret = this.head.data;
    if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next;
    --this.length;
    return ret;
  };

  BufferList.prototype.clear = function () {
    this.head = this.tail = null;
    this.length = 0;
  };

  BufferList.prototype.join = function (s) {
    if (this.length === 0) return '';
    var p = this.head;
    var ret = '' + p.data;
    while (p = p.next) {
      ret += s + p.data;
    }return ret;
  };

  BufferList.prototype.concat = function (n) {
    if (this.length === 0) return Buffer$1.alloc(0);
    if (this.length === 1) return this.head.data;
    var ret = Buffer$1.allocUnsafe(n >>> 0);
    var p = this.head;
    var i = 0;
    while (p) {
      p.data.copy(ret, i);
      i += p.data.length;
      p = p.next;
    }
    return ret;
  };

  // Copyright Joyent, Inc. and other Node contributors.
  var isBufferEncoding = Buffer$1.isEncoding
    || function(encoding) {
         switch (encoding && encoding.toLowerCase()) {
           case 'hex': case 'utf8': case 'utf-8': case 'ascii': case 'binary': case 'base64': case 'ucs2': case 'ucs-2': case 'utf16le': case 'utf-16le': case 'raw': return true;
           default: return false;
         }
       };


  function assertEncoding(encoding) {
    if (encoding && !isBufferEncoding(encoding)) {
      throw new Error('Unknown encoding: ' + encoding);
    }
  }

  // StringDecoder provides an interface for efficiently splitting a series of
  // buffers into a series of JS strings without breaking apart multi-byte
  // characters. CESU-8 is handled as part of the UTF-8 encoding.
  //
  // @TODO Handling all encodings inside a single object makes it very difficult
  // to reason about this code, so it should be split up in the future.
  // @TODO There should be a utf8-strict encoding that rejects invalid UTF-8 code
  // points as used by CESU-8.
  function StringDecoder(encoding) {
    this.encoding = (encoding || 'utf8').toLowerCase().replace(/[-_]/, '');
    assertEncoding(encoding);
    switch (this.encoding) {
      case 'utf8':
        // CESU-8 represents each of Surrogate Pair by 3-bytes
        this.surrogateSize = 3;
        break;
      case 'ucs2':
      case 'utf16le':
        // UTF-16 represents each of Surrogate Pair by 2-bytes
        this.surrogateSize = 2;
        this.detectIncompleteChar = utf16DetectIncompleteChar;
        break;
      case 'base64':
        // Base-64 stores 3 bytes in 4 chars, and pads the remainder.
        this.surrogateSize = 3;
        this.detectIncompleteChar = base64DetectIncompleteChar;
        break;
      default:
        this.write = passThroughWrite;
        return;
    }

    // Enough space to store all bytes of a single character. UTF-8 needs 4
    // bytes, but CESU-8 may require up to 6 (3 bytes per surrogate).
    this.charBuffer = new Buffer$1(6);
    // Number of bytes received for the current incomplete multi-byte character.
    this.charReceived = 0;
    // Number of bytes expected for the current incomplete multi-byte character.
    this.charLength = 0;
  }

  // write decodes the given buffer and returns it as JS string that is
  // guaranteed to not contain any partial multi-byte characters. Any partial
  // character found at the end of the buffer is buffered up, and will be
  // returned when calling write again with the remaining bytes.
  //
  // Note: Converting a Buffer containing an orphan surrogate to a String
  // currently works, but converting a String to a Buffer (via `new Buffer`, or
  // Buffer#write) will replace incomplete surrogates with the unicode
  // replacement character. See https://codereview.chromium.org/121173009/ .
  StringDecoder.prototype.write = function(buffer) {
    var charStr = '';
    // if our last write ended with an incomplete multibyte character
    while (this.charLength) {
      // determine how many remaining bytes this buffer has to offer for this char
      var available = (buffer.length >= this.charLength - this.charReceived) ?
          this.charLength - this.charReceived :
          buffer.length;

      // add the new bytes to the char buffer
      buffer.copy(this.charBuffer, this.charReceived, 0, available);
      this.charReceived += available;

      if (this.charReceived < this.charLength) {
        // still not enough chars in this buffer? wait for more ...
        return '';
      }

      // remove bytes belonging to the current character from the buffer
      buffer = buffer.slice(available, buffer.length);

      // get the character that was split
      charStr = this.charBuffer.slice(0, this.charLength).toString(this.encoding);

      // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character
      var charCode = charStr.charCodeAt(charStr.length - 1);
      if (charCode >= 0xD800 && charCode <= 0xDBFF) {
        this.charLength += this.surrogateSize;
        charStr = '';
        continue;
      }
      this.charReceived = this.charLength = 0;

      // if there are no more bytes in this buffer, just emit our char
      if (buffer.length === 0) {
        return charStr;
      }
      break;
    }

    // determine and set charLength / charReceived
    this.detectIncompleteChar(buffer);

    var end = buffer.length;
    if (this.charLength) {
      // buffer the incomplete character bytes we got
      buffer.copy(this.charBuffer, 0, buffer.length - this.charReceived, end);
      end -= this.charReceived;
    }

    charStr += buffer.toString(this.encoding, 0, end);

    var end = charStr.length - 1;
    var charCode = charStr.charCodeAt(end);
    // CESU-8: lead surrogate (D800-DBFF) is also the incomplete character
    if (charCode >= 0xD800 && charCode <= 0xDBFF) {
      var size = this.surrogateSize;
      this.charLength += size;
      this.charReceived += size;
      this.charBuffer.copy(this.charBuffer, size, 0, size);
      buffer.copy(this.charBuffer, 0, 0, size);
      return charStr.substring(0, end);
    }

    // or just emit the charStr
    return charStr;
  };

  // detectIncompleteChar determines if there is an incomplete UTF-8 character at
  // the end of the given buffer. If so, it sets this.charLength to the byte
  // length that character, and sets this.charReceived to the number of bytes
  // that are available for this character.
  StringDecoder.prototype.detectIncompleteChar = function(buffer) {
    // determine how many bytes we have to check at the end of this buffer
    var i = (buffer.length >= 3) ? 3 : buffer.length;

    // Figure out if one of the last i bytes of our buffer announces an
    // incomplete char.
    for (; i > 0; i--) {
      var c = buffer[buffer.length - i];

      // See http://en.wikipedia.org/wiki/UTF-8#Description

      // 110XXXXX
      if (i == 1 && c >> 5 == 0x06) {
        this.charLength = 2;
        break;
      }

      // 1110XXXX
      if (i <= 2 && c >> 4 == 0x0E) {
        this.charLength = 3;
        break;
      }

      // 11110XXX
      if (i <= 3 && c >> 3 == 0x1E) {
        this.charLength = 4;
        break;
      }
    }
    this.charReceived = i;
  };

  StringDecoder.prototype.end = function(buffer) {
    var res = '';
    if (buffer && buffer.length)
      res = this.write(buffer);

    if (this.charReceived) {
      var cr = this.charReceived;
      var buf = this.charBuffer;
      var enc = this.encoding;
      res += buf.slice(0, cr).toString(enc);
    }

    return res;
  };

  function passThroughWrite(buffer) {
    return buffer.toString(this.encoding);
  }

  function utf16DetectIncompleteChar(buffer) {
    this.charReceived = buffer.length % 2;
    this.charLength = this.charReceived ? 2 : 0;
  }

  function base64DetectIncompleteChar(buffer) {
    this.charReceived = buffer.length % 3;
    this.charLength = this.charReceived ? 3 : 0;
  }

  Readable.ReadableState = ReadableState;

  var debug$2 = debuglog('stream');
  inherits$3(Readable, EventEmitter$2);

  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);
    } else {
      // This is a hack to make sure that our error handler is attached before any
      // userland ones.  NEVER DO THIS. This is here only because this code needs
      // to continue to work with older versions of Node.js that do not include
      // the prependListener() method. The goal is to eventually remove this hack.
      if (!emitter._events || !emitter._events[event])
        emitter.on(event, fn);
      else if (Array.isArray(emitter._events[event]))
        emitter._events[event].unshift(fn);
      else
        emitter._events[event] = [fn, emitter._events[event]];
    }
  }
  function listenerCount (emitter, type) {
    return emitter.listeners(type).length;
  }
  function ReadableState(options, stream) {

    options = options || {};

    // object stream flag. Used to make read(n) ignore n and to
    // make all the buffer merging and length checks go away
    this.objectMode = !!options.objectMode;

    if (stream instanceof Duplex) this.objectMode = this.objectMode || !!options.readableObjectMode;

    // the point at which it stops calling _read() to fill the buffer
    // Note: 0 is a valid value, means "don't call _read preemptively ever"
    var hwm = options.highWaterMark;
    var defaultHwm = this.objectMode ? 16 : 16 * 1024;
    this.highWaterMark = hwm || hwm === 0 ? hwm : defaultHwm;

    // cast to ints.
    this.highWaterMark = ~ ~this.highWaterMark;

    // A linked list is used to store data chunks instead of an array because the
    // linked list can remove elements from the beginning faster than
    // array.shift()
    this.buffer = new BufferList();
    this.length = 0;
    this.pipes = null;
    this.pipesCount = 0;
    this.flowing = null;
    this.ended = false;
    this.endEmitted = false;
    this.reading = false;

    // a flag to be able to tell if the onwrite cb is called immediately,
    // or on a later tick.  We set this to true at first, because any
    // actions that shouldn't happen until "later" should generally also
    // not happen before the first write call.
    this.sync = true;

    // whenever we return null, then we set a flag to say
    // that we're awaiting a 'readable' event emission.
    this.needReadable = false;
    this.emittedReadable = false;
    this.readableListening = false;
    this.resumeScheduled = false;

    // Crypto is kind of old and crusty.  Historically, its default string
    // encoding is 'binary' so we have to make this configurable.
    // Everything else in the universe uses 'utf8', though.
    this.defaultEncoding = options.defaultEncoding || 'utf8';

    // when piping, we only care about 'readable' events that happen
    // after read()ing all the bytes and not getting any pushback.
    this.ranOut = false;

    // the number of writers that are awaiting a drain event in .pipe()s
    this.awaitDrain = 0;

    // if true, a maybeReadMore has been scheduled
    this.readingMore = false;

    this.decoder = null;
    this.encoding = null;
    if (options.encoding) {
      this.decoder = new StringDecoder(options.encoding);
      this.encoding = options.encoding;
    }
  }
  function Readable(options) {

    if (!(this instanceof Readable)) return new Readable(options);

    this._readableState = new ReadableState(options, this);

    // legacy
    this.readable = true;

    if (options && typeof options.read === 'function') this._read = options.read;

    EventEmitter$2.call(this);
  }

  // Manually shove something into the read() buffer.
  // This returns true if the highWaterMark has not been hit yet,
  // similar to how Writable.write() returns true if you should
  // write() some more.
  Readable.prototype.push = function (chunk, encoding) {
    var state = this._readableState;

    if (!state.objectMode && typeof chunk === 'string') {
      encoding = encoding || state.defaultEncoding;
      if (encoding !== state.encoding) {
        chunk = Buffer$1.from(chunk, encoding);
        encoding = '';
      }
    }

    return readableAddChunk(this, state, chunk, encoding, false);
  };

  // Unshift should *always* be something directly out of read()
  Readable.prototype.unshift = function (chunk) {
    var state = this._readableState;
    return readableAddChunk(this, state, chunk, '', true);
  };

  Readable.prototype.isPaused = function () {
    return this._readableState.flowing === false;
  };

  function readableAddChunk(stream, state, chunk, encoding, addToFront) {
    var er = chunkInvalid(state, chunk);
    if (er) {
      stream.emit('error', er);
    } else if (chunk === null) {
      state.reading = false;
      onEofChunk(stream, state);
    } else if (state.objectMode || chunk && chunk.length > 0) {
      if (state.ended && !addToFront) {
        var e = new Error('stream.push() after EOF');
        stream.emit('error', e);
      } else if (state.endEmitted && addToFront) {
        var _e = new Error('stream.unshift() after end event');
        stream.emit('error', _e);
      } else {
        var skipAdd;
        if (state.decoder && !addToFront && !encoding) {
          chunk = state.decoder.write(chunk);
          skipAdd = !state.objectMode && chunk.length === 0;
        }

        if (!addToFront) state.reading = false;

        // Don't add to the buffer if we've decoded to an empty string chunk and
        // we're not in object mode
        if (!skipAdd) {
          // if we want the data now, just emit it.
          if (state.flowing && state.length === 0 && !state.sync) {
            stream.emit('data', chunk);
            stream.read(0);
          } else {
            // update the buffer info.
            state.length += state.objectMode ? 1 : chunk.length;
            if (addToFront) state.buffer.unshift(chunk);else state.buffer.push(chunk);

            if (state.needReadable) emitReadable(stream);
          }
        }

        maybeReadMore(stream, state);
      }
    } else if (!addToFront) {
      state.reading = false;
    }

    return needMoreData(state);
  }

  // if it's past the high water mark, we can push in some more.
  // Also, if we have no data yet, we can stand some
  // more bytes.  This is to work around cases where hwm=0,
  // such as the repl.  Also, if the push() triggered a
  // readable event, and the user called read(largeNumber) such that
  // needReadable was set, then we ought to push more, so that another
  // 'readable' event will be triggered.
  function needMoreData(state) {
    return !state.ended && (state.needReadable || state.length < state.highWaterMark || state.length === 0);
  }

  // backwards compatibility.
  Readable.prototype.setEncoding = function (enc) {
    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$2('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$2('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$2('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$2('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$2('reading or ended', doRead);
    } else if (doRead) {
      debug$2('do read');
      state.reading = true;
      state.sync = true;
      // if the length is currently zero, then we *need* a readable event.
      if (state.length === 0) state.needReadable = true;
      // call internal read method
      this._read(state.highWaterMark);
      state.sync = false;
      // If _read pushed data synchronously, then `reading` will be false,
      // and we need to re-evaluate how much data we can return to the user.
      if (!state.reading) n = howMuchToRead(nOrig, state);
    }

    var ret;
    if (n > 0) ret = fromList(n, state);else ret = null;

    if (ret === null) {
      state.needReadable = true;
      n = 0;
    } else {
      state.length -= n;
    }

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

      // If we tried to read() past the EOF, then emit end on the next tick.
      if (nOrig !== n && state.ended) endReadable(this);
    }

    if (ret !== null) this.emit('data', ret);

    return ret;
  };

  function chunkInvalid(state, chunk) {
    var er = null;
    if (!Buffer$1.isBuffer(chunk) && typeof chunk !== 'string' && chunk !== null && chunk !== undefined && !state.objectMode) {
      er = new TypeError('Invalid non-string/buffer chunk');
    }
    return er;
  }

  function onEofChunk(stream, state) {
    if (state.ended) return;
    if (state.decoder) {
      var chunk = state.decoder.end();
      if (chunk && chunk.length) {
        state.buffer.push(chunk);
        state.length += state.objectMode ? 1 : chunk.length;
      }
    }
    state.ended = true;

    // emit 'readable' now to make sure it gets picked up.
    emitReadable(stream);
  }

  // Don't emit readable right away in sync mode, because this can trigger
  // another read() call => stack overflow.  This way, it might trigger
  // a nextTick recursion warning, but that's not so bad.
  function emitReadable(stream) {
    var state = stream._readableState;
    state.needReadable = false;
    if (!state.emittedReadable) {
      debug$2('emitReadable', state.flowing);
      state.emittedReadable = true;
      if (state.sync) nextTick(emitReadable_, stream);else emitReadable_(stream);
    }
  }

  function emitReadable_(stream) {
    debug$2('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;
      nextTick(maybeReadMore_, stream, state);
    }
  }

  function maybeReadMore_(stream, state) {
    var len = state.length;
    while (!state.reading && !state.flowing && !state.ended && state.length < state.highWaterMark) {
      debug$2('maybeReadMore read 0');
      stream.read(0);
      if (len === state.length)
        // didn't get any data, stop spinning.
        break;else len = state.length;
    }
    state.readingMore = false;
  }

  // abstract method.  to be overridden in specific implementation classes.
  // call cb(er, data) where data is <= n in length.
  // for virtual (non-string, non-buffer) streams, "length" is somewhat
  // arbitrary, and perhaps not very meaningful.
  Readable.prototype._read = function (n) {
    this.emit('error', new Error('not implemented'));
  };

  Readable.prototype.pipe = function (dest, pipeOpts) {
    var src = this;
    var state = this._readableState;

    switch (state.pipesCount) {
      case 0:
        state.pipes = dest;
        break;
      case 1:
        state.pipes = [state.pipes, dest];
        break;
      default:
        state.pipes.push(dest);
        break;
    }
    state.pipesCount += 1;
    debug$2('pipe count=%d opts=%j', state.pipesCount, pipeOpts);

    var doEnd = (!pipeOpts || pipeOpts.end !== false);

    var endFn = doEnd ? onend : cleanup;
    if (state.endEmitted) nextTick(endFn);else src.once('end', endFn);

    dest.on('unpipe', onunpipe);
    function onunpipe(readable) {
      debug$2('onunpipe');
      if (readable === src) {
        cleanup();
      }
    }

    function onend() {
      debug$2('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$2('cleanup');
      // cleanup event handlers once the pipe is broken
      dest.removeListener('close', onclose);
      dest.removeListener('finish', onfinish);
      dest.removeListener('drain', ondrain);
      dest.removeListener('error', onerror);
      dest.removeListener('unpipe', onunpipe);
      src.removeListener('end', onend);
      src.removeListener('end', cleanup);
      src.removeListener('data', ondata);

      cleanedUp = true;

      // if the reader is waiting for a drain event from this
      // specific writer, then it would cause it to never start
      // flowing again.
      // So, if this is awaiting a drain, then we just call it now.
      // If we don't know, then assume that we are waiting for one.
      if (state.awaitDrain && (!dest._writableState || dest._writableState.needDrain)) ondrain();
    }

    // If the user pushes more data while we're writing to dest then we'll end up
    // in ondata again. However, we only want to increase awaitDrain once because
    // dest will only emit one 'drain' event for the multiple writes.
    // => Introduce a guard on increasing awaitDrain.
    var increasedAwaitDrain = false;
    src.on('data', ondata);
    function ondata(chunk) {
      debug$2('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$2('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$2('onerror', er);
      unpipe();
      dest.removeListener('error', onerror);
      if (listenerCount(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$2('onfinish');
      dest.removeListener('close', onclose);
      unpipe();
    }
    dest.once('finish', onfinish);

    function unpipe() {
      debug$2('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$2('pipe resume');
      src.resume();
    }

    return dest;
  };

  function pipeOnDrain(src) {
    return function () {
      var state = src._readableState;
      debug$2('pipeOnDrain', state.awaitDrain);
      if (state.awaitDrain) state.awaitDrain--;
      if (state.awaitDrain === 0 && src.listeners('data').length) {
        state.flowing = true;
        flow(src);
      }
    };
  }

  Readable.prototype.unpipe = function (dest) {
    var state = this._readableState;

    // if we're not piping anywhere, then do nothing.
    if (state.pipesCount === 0) return this;

    // just one destination.  most common case.
    if (state.pipesCount === 1) {
      // passed in one, but it's not the right one.
      if (dest && dest !== state.pipes) return this;

      if (!dest) dest = state.pipes;

      // got a match.
      state.pipes = null;
      state.pipesCount = 0;
      state.flowing = false;
      if (dest) dest.emit('unpipe', this);
      return this;
    }

    // slow case. multiple pipe destinations.

    if (!dest) {
      // remove all.
      var dests = state.pipes;
      var len = state.pipesCount;
      state.pipes = null;
      state.pipesCount = 0;
      state.flowing = false;

      for (var _i = 0; _i < len; _i++) {
        dests[_i].emit('unpipe', this);
      }return this;
    }

    // try to find the right one.
    var i = indexOf(state.pipes, dest);
    if (i === -1) return this;

    state.pipes.splice(i, 1);
    state.pipesCount -= 1;
    if (state.pipesCount === 1) state.pipes = state.pipes[0];

    dest.emit('unpipe', this);

    return this;
  };

  // set up data events if they are asked for
  // Ensure readable listeners eventually get something
  Readable.prototype.on = function (ev, fn) {
    var res = EventEmitter$2.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) {
          nextTick(nReadingNextTick, this);
        } else if (state.length) {
          emitReadable(this);
        }
      }
    }

    return res;
  };
  Readable.prototype.addListener = Readable.prototype.on;

  function nReadingNextTick(self) {
    debug$2('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$2('resume');
      state.flowing = true;
      resume(this, state);
    }
    return this;
  };

  function resume(stream, state) {
    if (!state.resumeScheduled) {
      state.resumeScheduled = true;
      nextTick(resume_, stream, state);
    }
  }

  function resume_(stream, state) {
    if (!state.reading) {
      debug$2('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$2('call pause flowing=%j', this._readableState.flowing);
    if (false !== this._readableState.flowing) {
      debug$2('pause');
      this._readableState.flowing = false;
      this.emit('pause');
    }
    return this;
  };

  function flow(stream) {
    var state = stream._readableState;
    debug$2('flow', state.flowing);
    while (state.flowing && stream.read() !== null) {}
  }

  // wrap an old-style stream as the async data source.
  // This is *not* part of the readable stream interface.
  // It is an ugly unfortunate mess of history.
  Readable.prototype.wrap = function (stream) {
    var state = this._readableState;
    var paused = false;

    var self = this;
    stream.on('end', function () {
      debug$2('wrapped end');
      if (state.decoder && !state.ended) {
        var chunk = state.decoder.end();
        if (chunk && chunk.length) self.push(chunk);
      }

      self.push(null);
    });

    stream.on('data', function (chunk) {
      debug$2('wrapped data');
      if (state.decoder) chunk = state.decoder.write(chunk);

      // don't skip over falsy values in objectMode
      if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return;

      var ret = self.push(chunk);
      if (!ret) {
        paused = true;
        stream.pause();
      }
    });

    // proxy all the other methods.
    // important when wrapping filters and duplexes.
    for (var i in stream) {
      if (this[i] === undefined && typeof stream[i] === 'function') {
        this[i] = function (method) {
          return function () {
            return stream[method].apply(stream, arguments);
          };
        }(i);
      }
    }

    // proxy certain important events.
    var events = ['error', 'close', 'destroy', 'pause', 'resume'];
    forEach(events, function (ev) {
      stream.on(ev, self.emit.bind(self, ev));
    });

    // when we try to consume some more bytes, simply unpause the
    // underlying stream.
    self._read = function (n) {
      debug$2('wrapped _read', n);
      if (paused) {
        paused = false;
        stream.resume();
      }
    };

    return self;
  };

  // exposed for testing purposes only.
  Readable._fromList = fromList;

  // Pluck off n bytes from an array of buffers.
  // Length is the combined lengths of all the buffers in the list.
  // This function is designed to be inlinable, so please take care when making
  // changes to the function body.
  function fromList(n, state) {
    // nothing buffered
    if (state.length === 0) return null;

    var ret;
    if (state.objectMode) ret = state.buffer.shift();else if (!n || n >= state.length) {
      // read it all, truncate the list
      if (state.decoder) ret = state.buffer.join('');else if (state.buffer.length === 1) ret = state.buffer.head.data;else ret = state.buffer.concat(state.length);
      state.buffer.clear();
    } else {
      // read part of list
      ret = fromListPartial(n, state.buffer, state.decoder);
    }

    return ret;
  }

  // Extracts only enough buffered data to satisfy the amount requested.
  // This function is designed to be inlinable, so please take care when making
  // changes to the function body.
  function fromListPartial(n, list, hasStrings) {
    var ret;
    if (n < list.head.data.length) {
      // slice is the same for buffers and strings
      ret = list.head.data.slice(0, n);
      list.head.data = list.head.data.slice(n);
    } else if (n === list.head.data.length) {
      // first chunk is a perfect match
      ret = list.shift();
    } else {
      // result spans more than one buffer
      ret = hasStrings ? copyFromBufferString(n, list) : copyFromBuffer(n, list);
    }
    return ret;
  }

  // Copies a specified amount of characters from the list of buffered data
  // chunks.
  // This function is designed to be inlinable, so please take care when making
  // changes to the function body.
  function copyFromBufferString(n, list) {
    var p = list.head;
    var c = 1;
    var ret = p.data;
    n -= ret.length;
    while (p = p.next) {
      var str = p.data;
      var nb = n > str.length ? str.length : n;
      if (nb === str.length) ret += str;else ret += str.slice(0, n);
      n -= nb;
      if (n === 0) {
        if (nb === str.length) {
          ++c;
          if (p.next) list.head = p.next;else list.head = list.tail = null;
        } else {
          list.head = p;
          p.data = str.slice(nb);
        }
        break;
      }
      ++c;
    }
    list.length -= c;
    return ret;
  }

  // Copies a specified amount of bytes from the list of buffered data chunks.
  // This function is designed to be inlinable, so please take care when making
  // changes to the function body.
  function copyFromBuffer(n, list) {
    var ret = Buffer$1.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;
      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 forEach(xs, f) {
    for (var i = 0, l = xs.length; i < l; i++) {
      f(xs[i], i);
    }
  }

  function indexOf(xs, x) {
    for (var i = 0, l = xs.length; i < l; i++) {
      if (xs[i] === x) return i;
    }
    return -1;
  }

  // A bit simpler than readable streams.
  Writable.WritableState = WritableState;
  inherits$3(Writable, EventEmitter$2);

  function nop() {}

  function WriteReq(chunk, encoding, cb) {
    this.chunk = chunk;
    this.encoding = encoding;
    this.callback = cb;
    this.next = null;
  }

  function WritableState(options, stream) {
    Object.defineProperty(this, 'buffer', {
      get: deprecate$1(function () {
        return this.getBuffer();
      }, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.')
    });
    options = options || {};

    // object stream flag to indicate whether or not this stream
    // contains buffers or objects.
    this.objectMode = !!options.objectMode;

    if (stream instanceof Duplex) this.objectMode = this.objectMode || !!options.writableObjectMode;

    // the point at which write() starts returning false
    // Note: 0 is a valid value, means that we always return false if
    // the entire buffer is not flushed immediately on write()
    var hwm = options.highWaterMark;
    var defaultHwm = this.objectMode ? 16 : 16 * 1024;
    this.highWaterMark = hwm || hwm === 0 ? hwm : defaultHwm;

    // cast to ints.
    this.highWaterMark = ~ ~this.highWaterMark;

    this.needDrain = false;
    // at the start of calling end()
    this.ending = false;
    // when end() has been called, and returned
    this.ended = false;
    // when 'finish' is emitted
    this.finished = false;

    // should we decode strings into buffers before passing to _write?
    // this is here so that some node-core streams can optimize string
    // handling at a lower level.
    var noDecode = options.decodeStrings === false;
    this.decodeStrings = !noDecode;

    // Crypto is kind of old and crusty.  Historically, its default string
    // encoding is 'binary' so we have to make this configurable.
    // Everything else in the universe uses 'utf8', though.
    this.defaultEncoding = options.defaultEncoding || 'utf8';

    // not an actual buffer we keep track of, but a measurement
    // of how much we're waiting to get pushed to some underlying
    // socket or file.
    this.length = 0;

    // a flag to see when we're in the middle of a write.
    this.writing = false;

    // when true all writes will be buffered until .uncork() call
    this.corked = 0;

    // a flag to be able to tell if the onwrite cb is called immediately,
    // or on a later tick.  We set this to true at first, because any
    // actions that shouldn't happen until "later" should generally also
    // not happen before the first write call.
    this.sync = true;

    // a flag to know if we're processing previously buffered items, which
    // may call the _write() callback in the same tick, so that we don't
    // end up in an overlapped onwrite situation.
    this.bufferProcessing = false;

    // the callback that's passed to _write(chunk,cb)
    this.onwrite = function (er) {
      onwrite(stream, er);
    };

    // the callback that the user supplies to write(chunk,encoding,cb)
    this.writecb = null;

    // the amount that is being written when _write is called.
    this.writelen = 0;

    this.bufferedRequest = null;
    this.lastBufferedRequest = null;

    // number of pending user-supplied write callbacks
    // this must be 0 before 'finish' can be emitted
    this.pendingcb = 0;

    // emit prefinish if the only thing we're waiting for is _write cbs
    // This is relevant for synchronous Transform streams
    this.prefinished = false;

    // True if the error was already emitted and should not be thrown again
    this.errorEmitted = false;

    // count buffered requests
    this.bufferedRequestCount = 0;

    // allocate the first CorkedRequest, there is always
    // one allocated and free to use, and we maintain at most two
    this.corkedRequestsFree = new CorkedRequest(this);
  }

  WritableState.prototype.getBuffer = function writableStateGetBuffer() {
    var current = this.bufferedRequest;
    var out = [];
    while (current) {
      out.push(current);
      current = current.next;
    }
    return out;
  };
  function Writable(options) {

    // Writable ctor is applied to Duplexes, though they're not
    // instanceof Writable, they're instanceof Readable.
    if (!(this instanceof Writable) && !(this instanceof Duplex)) return new Writable(options);

    this._writableState = new WritableState(options, this);

    // legacy.
    this.writable = true;

    if (options) {
      if (typeof options.write === 'function') this._write = options.write;

      if (typeof options.writev === 'function') this._writev = options.writev;
    }

    EventEmitter$2.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);
    nextTick(cb, er);
  }

  // If we get something that is not a buffer, string, null, or undefined,
  // and we're not in objectMode, then that's an error.
  // Otherwise stream chunks are all considered to be of length=1, and the
  // watermarks determine how many objects to keep in the buffer, rather than
  // how many bytes or characters.
  function validChunk(stream, state, chunk, cb) {
    var valid = true;
    var er = false;
    // Always throw error if a null is written
    // if we are not in object mode then throw
    // if it is not a buffer, string, or undefined.
    if (chunk === null) {
      er = new TypeError('May not write null values to stream');
    } else if (!Buffer$1.isBuffer(chunk) && typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
      er = new TypeError('Invalid non-string/buffer chunk');
    }
    if (er) {
      stream.emit('error', er);
      nextTick(cb, er);
      valid = false;
    }
    return valid;
  }

  Writable.prototype.write = function (chunk, encoding, cb) {
    var state = this._writableState;
    var ret = false;

    if (typeof encoding === 'function') {
      cb = encoding;
      encoding = null;
    }

    if (Buffer$1.isBuffer(chunk)) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding;

    if (typeof cb !== 'function') cb = nop;

    if (state.ended) writeAfterEnd(this, cb);else if (validChunk(this, state, chunk, cb)) {
      state.pendingcb++;
      ret = writeOrBuffer(this, state, chunk, encoding, cb);
    }

    return ret;
  };

  Writable.prototype.cork = function () {
    var state = this._writableState;

    state.corked++;
  };

  Writable.prototype.uncork = function () {
    var state = this._writableState;

    if (state.corked) {
      state.corked--;

      if (!state.writing && !state.corked && !state.finished && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state);
    }
  };

  Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) {
    // node::ParseEncoding() requires lower case.
    if (typeof encoding === 'string') encoding = encoding.toLowerCase();
    if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new TypeError('Unknown encoding: ' + encoding);
    this._writableState.defaultEncoding = encoding;
    return this;
  };

  function decodeChunk(state, chunk, encoding) {
    if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') {
      chunk = Buffer$1.from(chunk, encoding);
    }
    return chunk;
  }

  // if we're already writing something, then just put this
  // in the queue, and wait our turn.  Otherwise, call _write
  // If we return false, then we need a drain event, so set that flag.
  function writeOrBuffer(stream, state, chunk, encoding, cb) {
    chunk = decodeChunk(state, chunk, encoding);

    if (Buffer$1.isBuffer(chunk)) encoding = 'buffer';
    var len = state.objectMode ? 1 : chunk.length;

    state.length += len;

    var ret = state.length < state.highWaterMark;
    // we must ensure that previous needDrain will not be reset to false.
    if (!ret) state.needDrain = true;

    if (state.writing || state.corked) {
      var last = state.lastBufferedRequest;
      state.lastBufferedRequest = new WriteReq(chunk, encoding, cb);
      if (last) {
        last.next = state.lastBufferedRequest;
      } else {
        state.bufferedRequest = state.lastBufferedRequest;
      }
      state.bufferedRequestCount += 1;
    } else {
      doWrite(stream, state, false, len, chunk, encoding, cb);
    }

    return ret;
  }

  function doWrite(stream, state, writev, len, chunk, encoding, cb) {
    state.writelen = len;
    state.writecb = cb;
    state.writing = true;
    state.sync = true;
    if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite);
    state.sync = false;
  }

  function onwriteError(stream, state, sync, er, cb) {
    --state.pendingcb;
    if (sync) nextTick(cb, er);else cb(er);

    stream._writableState.errorEmitted = true;
    stream.emit('error', er);
  }

  function onwriteStateUpdate(state) {
    state.writing = false;
    state.writecb = null;
    state.length -= state.writelen;
    state.writelen = 0;
  }

  function onwrite(stream, er) {
    var state = stream._writableState;
    var sync = state.sync;
    var cb = state.writecb;

    onwriteStateUpdate(state);

    if (er) onwriteError(stream, state, sync, er, cb);else {
      // Check if we're actually ready to finish, but don't emit yet
      var finished = needFinish(state);

      if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) {
        clearBuffer(stream, state);
      }

      if (sync) {
        /*<replacement>*/
          nextTick(afterWrite, stream, state, finished, cb);
        /*</replacement>*/
      } else {
          afterWrite(stream, state, finished, cb);
        }
    }
  }

  function afterWrite(stream, state, finished, cb) {
    if (!finished) onwriteDrain(stream, state);
    state.pendingcb--;
    cb();
    finishMaybe(stream, state);
  }

  // Must force callback to be called on nextTick, so that we don't
  // emit 'drain' before the write() consumer gets the 'false' return
  // value, and has a chance to attach a 'drain' listener.
  function onwriteDrain(stream, state) {
    if (state.length === 0 && state.needDrain) {
      state.needDrain = false;
      stream.emit('drain');
    }
  }

  // if there's something in the buffer waiting, then process it
  function clearBuffer(stream, state) {
    state.bufferProcessing = true;
    var entry = state.bufferedRequest;

    if (stream._writev && entry && entry.next) {
      // Fast case, write everything using _writev()
      var l = state.bufferedRequestCount;
      var buffer = new Array(l);
      var holder = state.corkedRequestsFree;
      holder.entry = entry;

      var count = 0;
      while (entry) {
        buffer[count] = entry;
        entry = entry.next;
        count += 1;
      }

      doWrite(stream, state, true, state.length, buffer, '', holder.finish);

      // doWrite is almost always async, defer these to save a bit of time
      // as the hot path ends with doWrite
      state.pendingcb++;
      state.lastBufferedRequest = null;
      if (holder.next) {
        state.corkedRequestsFree = holder.next;
        holder.next = null;
      } else {
        state.corkedRequestsFree = new CorkedRequest(state);
      }
    } else {
      // Slow case, write chunks one-by-one
      while (entry) {
        var chunk = entry.chunk;
        var encoding = entry.encoding;
        var cb = entry.callback;
        var len = state.objectMode ? 1 : chunk.length;

        doWrite(stream, state, false, len, chunk, encoding, cb);
        entry = entry.next;
        // if we didn't call the onwrite immediately, then
        // it means that we need to wait until it does.
        // also, that means that the chunk and cb are currently
        // being processed, so move the buffer counter past them.
        if (state.writing) {
          break;
        }
      }

      if (entry === null) state.lastBufferedRequest = null;
    }

    state.bufferedRequestCount = 0;
    state.bufferedRequest = entry;
    state.bufferProcessing = false;
  }

  Writable.prototype._write = function (chunk, encoding, cb) {
    cb(new Error('not implemented'));
  };

  Writable.prototype._writev = null;

  Writable.prototype.end = function (chunk, encoding, cb) {
    var state = this._writableState;

    if (typeof chunk === 'function') {
      cb = chunk;
      chunk = null;
      encoding = null;
    } else if (typeof encoding === 'function') {
      cb = encoding;
      encoding = null;
    }

    if (chunk !== null && chunk !== undefined) this.write(chunk, encoding);

    // .end() fully uncorks
    if (state.corked) {
      state.corked = 1;
      this.uncork();
    }

    // ignore unnecessary end() calls.
    if (!state.ending && !state.finished) endWritable(this, state, cb);
  };

  function needFinish(state) {
    return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing;
  }

  function prefinish(stream, state) {
    if (!state.prefinished) {
      state.prefinished = true;
      stream.emit('prefinish');
    }
  }

  function finishMaybe(stream, state) {
    var need = needFinish(state);
    if (need) {
      if (state.pendingcb === 0) {
        prefinish(stream, state);
        state.finished = true;
        stream.emit('finish');
      } else {
        prefinish(stream, state);
      }
    }
    return need;
  }

  function endWritable(stream, state, cb) {
    state.ending = true;
    finishMaybe(stream, state);
    if (cb) {
      if (state.finished) nextTick(cb);else stream.once('finish', cb);
    }
    state.ended = true;
    stream.writable = false;
  }

  // It seems a linked list but it is not
  // there will be only 2 of these for each stream
  function CorkedRequest(state) {
    var _this = this;

    this.next = null;
    this.entry = null;

    this.finish = function (err) {
      var entry = _this.entry;
      _this.entry = null;
      while (entry) {
        var cb = entry.callback;
        state.pendingcb--;
        cb(err);
        entry = entry.next;
      }
      if (state.corkedRequestsFree) {
        state.corkedRequestsFree.next = _this;
      } else {
        state.corkedRequestsFree = _this;
      }
    };
  }

  inherits$3(Duplex, Readable);

  var keys = Object.keys(Writable.prototype);
  for (var v = 0; v < keys.length; v++) {
    var method = keys[v];
    if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method];
  }
  function Duplex(options) {
    if (!(this instanceof Duplex)) return new Duplex(options);

    Readable.call(this, options);
    Writable.call(this, options);

    if (options && options.readable === false) this.readable = false;

    if (options && options.writable === false) this.writable = false;

    this.allowHalfOpen = true;
    if (options && options.allowHalfOpen === false) this.allowHalfOpen = false;

    this.once('end', onend);
  }

  // the no-half-open enforcer
  function onend() {
    // if we allow half-open state, or if the writable side ended,
    // then we're ok.
    if (this.allowHalfOpen || this._writableState.ended) return;

    // no more data can be written.
    // But allow more writes to happen in this tick.
    nextTick(onEndNT, this);
  }

  function onEndNT(self) {
    self.end();
  }

  // a transform stream is a readable/writable stream where you do
  inherits$3(Transform, Duplex);

  function TransformState(stream) {
    this.afterTransform = function (er, data) {
      return afterTransform(stream, er, data);
    };

    this.needTransform = false;
    this.transforming = false;
    this.writecb = null;
    this.writechunk = null;
    this.writeencoding = null;
  }

  function afterTransform(stream, er, data) {
    var ts = stream._transformState;
    ts.transforming = false;

    var cb = ts.writecb;

    if (!cb) return stream.emit('error', new Error('no writecb in Transform class'));

    ts.writechunk = null;
    ts.writecb = null;

    if (data !== null && data !== undefined) stream.push(data);

    cb(er);

    var rs = stream._readableState;
    rs.reading = false;
    if (rs.needReadable || rs.length < rs.highWaterMark) {
      stream._read(rs.highWaterMark);
    }
  }
  function Transform(options) {
    if (!(this instanceof Transform)) return new Transform(options);

    Duplex.call(this, options);

    this._transformState = new TransformState(this);

    // when the writable side finishes, then flush out anything remaining.
    var stream = this;

    // start out asking for a readable event once data is transformed.
    this._readableState.needReadable = true;

    // we have implemented the _read method, and done the other things
    // that Readable wants before the first _read call, so unset the
    // sync guard flag.
    this._readableState.sync = false;

    if (options) {
      if (typeof options.transform === 'function') this._transform = options.transform;

      if (typeof options.flush === 'function') this._flush = options.flush;
    }

    this.once('prefinish', function () {
      if (typeof this._flush === 'function') this._flush(function (er) {
        done(stream, er);
      });else done(stream);
    });
  }

  Transform.prototype.push = function (chunk, encoding) {
    this._transformState.needTransform = false;
    return Duplex.prototype.push.call(this, chunk, encoding);
  };

  // This is the part where you do stuff!
  // override this function in implementation classes.
  // 'chunk' is an input chunk.
  //
  // Call `push(newChunk)` to pass along transformed output
  // to the readable side.  You may call 'push' zero or more times.
  //
  // Call `cb(err)` when you are done with this chunk.  If you pass
  // an error, then that'll put the hurt on the whole operation.  If you
  // never call cb(), then you'll never get another chunk.
  Transform.prototype._transform = function (chunk, encoding, cb) {
    throw new Error('Not implemented');
  };

  Transform.prototype._write = function (chunk, encoding, cb) {
    var ts = this._transformState;
    ts.writecb = cb;
    ts.writechunk = chunk;
    ts.writeencoding = encoding;
    if (!ts.transforming) {
      var rs = this._readableState;
      if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark);
    }
  };

  // Doesn't matter what the args are here.
  // _transform does all the work.
  // That we got here means that the readable side wants more data.
  Transform.prototype._read = function (n) {
    var ts = this._transformState;

    if (ts.writechunk !== null && ts.writecb && !ts.transforming) {
      ts.transforming = true;
      this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
    } else {
      // mark that we need a transform, so that any data that comes in
      // will get processed, now that we've asked for it.
      ts.needTransform = true;
    }
  };

  function done(stream, er) {
    if (er) return stream.emit('error', er);

    // if there's nothing in the write buffer, then that means
    // that nothing more will ever be provided
    var ws = stream._writableState;
    var ts = stream._transformState;

    if (ws.length) throw new Error('Calling transform done when ws.length != 0');

    if (ts.transforming) throw new Error('Calling transform done when still transforming');

    return stream.push(null);
  }

  inherits$3(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);
  };

  inherits$3(Stream, EventEmitter$2);
  Stream.Readable = Readable;
  Stream.Writable = Writable;
  Stream.Duplex = Duplex;
  Stream.Transform = Transform;
  Stream.PassThrough = PassThrough;

  // 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() {
    EventEmitter$2.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 (EventEmitter$2.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;
  };

  var _polyfillNode_stream = /*#__PURE__*/Object.freeze({
    __proto__: null,
    'default': Stream,
    Readable: Readable,
    Writable: Writable,
    Duplex: Duplex,
    Transform: Transform,
    PassThrough: PassThrough,
    Stream: Stream
  });

  var require$$0$2 = /*@__PURE__*/getAugmentedNamespace(_polyfillNode_stream);

  var require$$0$1 = /*@__PURE__*/getAugmentedNamespace(_polyfillNode_util$1);

  var WritableStream = require$$0$2.Writable;
  var inherits$1 = require$$0$1.inherits;

  var browserStdout = BrowserStdout;


  inherits$1(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);
    }
    nextTick$1(cb);
  };

  /**
   * Parse the given `qs`.
   *
   * @private
   * @param {string} qs
   * @return {Object<string, string>}
   */
  var parseQuery$1 = function parseQuery(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
   */
  var highlightTags$1 = function highlightTags(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);
    }
  };

  var mocha$1 = {exports: {}};

  var escapeStringRegexp = string => {
  	if (typeof string !== 'string') {
  		throw new TypeError('Expected a string');
  	}

  	// Escape characters with special meaning either inside or outside character sets.
  	// Use a simple backslash escape when it’s always valid, and a \unnnn escape when the simpler form would be disallowed by Unicode patterns’ stricter grammar.
  	return string
  		.replace(/[|\\{}()[\]^$+*?.]/g, '\\$&')
  		.replace(/-/g, '\\x2d');
  };

  // 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.

  // resolves . and .. elements in a path array with directory names there
  // must be no slashes, empty elements, or device names (c:\) in the array
  // (so also no leading and trailing slashes - it does not distinguish
  // relative and absolute paths)
  function normalizeArray(parts, allowAboveRoot) {
    // if the path tries to go above the root, `up` ends up > 0
    var up = 0;
    for (var i = parts.length - 1; i >= 0; i--) {
      var last = parts[i];
      if (last === '.') {
        parts.splice(i, 1);
      } else if (last === '..') {
        parts.splice(i, 1);
        up++;
      } else if (up) {
        parts.splice(i, 1);
        up--;
      }
    }

    // if the path is allowed to go above the root, restore leading ..s
    if (allowAboveRoot) {
      for (; up--; up) {
        parts.unshift('..');
      }
    }

    return parts;
  }

  // Split a filename into [root, dir, basename, ext], unix version
  // 'root' is just a slash, or nothing.
  var splitPathRe =
      /^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;
  var splitPath = function(filename) {
    return splitPathRe.exec(filename).slice(1);
  };

  // path.resolve([from ...], to)
  // posix version
  function resolve() {
    var resolvedPath = '',
        resolvedAbsolute = false;

    for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {
      var path = (i >= 0) ? arguments[i] : '/';

      // Skip empty and invalid entries
      if (typeof path !== 'string') {
        throw new TypeError('Arguments to path.resolve must be strings');
      } else if (!path) {
        continue;
      }

      resolvedPath = path + '/' + resolvedPath;
      resolvedAbsolute = path.charAt(0) === '/';
    }

    // At this point the path should be resolved to a full absolute path, but
    // handle relative paths to be safe (might happen when process.cwd() fails)

    // Normalize the path
    resolvedPath = normalizeArray(filter(resolvedPath.split('/'), function(p) {
      return !!p;
    }), !resolvedAbsolute).join('/');

    return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.';
  }
  // path.normalize(path)
  // posix version
  function normalize(path) {
    var isPathAbsolute = isAbsolute(path),
        trailingSlash = substr(path, -1) === '/';

    // Normalize the path
    path = normalizeArray(filter(path.split('/'), function(p) {
      return !!p;
    }), !isPathAbsolute).join('/');

    if (!path && !isPathAbsolute) {
      path = '.';
    }
    if (path && trailingSlash) {
      path += '/';
    }

    return (isPathAbsolute ? '/' : '') + path;
  }
  // posix version
  function isAbsolute(path) {
    return path.charAt(0) === '/';
  }

  // posix version
  function join() {
    var paths = Array.prototype.slice.call(arguments, 0);
    return normalize(filter(paths, function(p, index) {
      if (typeof p !== 'string') {
        throw new TypeError('Arguments to path.join must be strings');
      }
      return p;
    }).join('/'));
  }


  // path.relative(from, to)
  // posix version
  function relative(from, to) {
    from = resolve(from).substr(1);
    to = resolve(to).substr(1);

    function trim(arr) {
      var start = 0;
      for (; start < arr.length; start++) {
        if (arr[start] !== '') break;
      }

      var end = arr.length - 1;
      for (; end >= 0; end--) {
        if (arr[end] !== '') break;
      }

      if (start > end) return [];
      return arr.slice(start, end - start + 1);
    }

    var fromParts = trim(from.split('/'));
    var toParts = trim(to.split('/'));

    var length = Math.min(fromParts.length, toParts.length);
    var samePartsLength = length;
    for (var i = 0; i < length; i++) {
      if (fromParts[i] !== toParts[i]) {
        samePartsLength = i;
        break;
      }
    }

    var outputParts = [];
    for (var i = samePartsLength; i < fromParts.length; i++) {
      outputParts.push('..');
    }

    outputParts = outputParts.concat(toParts.slice(samePartsLength));

    return outputParts.join('/');
  }

  var sep = '/';
  var delimiter = ':';

  function dirname(path) {
    var result = splitPath(path),
        root = result[0],
        dir = result[1];

    if (!root && !dir) {
      // No dirname whatsoever
      return '.';
    }

    if (dir) {
      // It has a dirname, strip trailing slash
      dir = dir.substr(0, dir.length - 1);
    }

    return root + dir;
  }

  function basename(path, ext) {
    var f = splitPath(path)[2];
    // TODO: make this comparison case-insensitive on windows?
    if (ext && f.substr(-1 * ext.length) === ext) {
      f = f.substr(0, f.length - ext.length);
    }
    return f;
  }


  function extname(path) {
    return splitPath(path)[3];
  }
  var _polyfillNode_path = {
    extname: extname,
    basename: basename,
    dirname: dirname,
    sep: sep,
    delimiter: delimiter,
    relative: relative,
    join: join,
    isAbsolute: isAbsolute,
    normalize: normalize,
    resolve: resolve
  };
  function filter (xs, f) {
      if (xs.filter) return xs.filter(f);
      var res = [];
      for (var i = 0; i < xs.length; i++) {
          if (f(xs[i], i, xs)) res.push(xs[i]);
      }
      return res;
  }

  // String.prototype.substr - negative index don't work in IE8
  var substr = 'ab'.substr(-1) === 'b' ?
      function (str, start, len) { return str.substr(start, len) } :
      function (str, start, len) {
          if (start < 0) start = str.length + start;
          return str.substr(start, len);
      }
  ;

  var _polyfillNode_path$1 = /*#__PURE__*/Object.freeze({
    __proto__: null,
    resolve: resolve,
    normalize: normalize,
    isAbsolute: isAbsolute,
    join: join,
    relative: relative,
    sep: sep,
    delimiter: delimiter,
    dirname: dirname,
    basename: basename,
    extname: extname,
    'default': _polyfillNode_path
  });

  var require$$1 = /*@__PURE__*/getAugmentedNamespace(_polyfillNode_path$1);

  var reporters = {};

  var base$1 = {exports: {}};

  var lib = {};

  var base = {};

  /*istanbul ignore start*/

  (function (exports) {

  Object.defineProperty(exports, "__esModule", {
    value: true
  });
  exports["default"] = Diff;

  /*istanbul ignore end*/
  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)
    };
  }

  }(base));

  var character = {};

  /*istanbul ignore start*/

  Object.defineProperty(character, "__esModule", {
    value: true
  });
  character.diffChars = diffChars;
  character.characterDiff = void 0;

  /*istanbul ignore end*/
  var
  /*istanbul ignore start*/
  _base$6 = _interopRequireDefault$7(base)
  /*istanbul ignore end*/
  ;

  /*istanbul ignore start*/ function _interopRequireDefault$7(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

  /*istanbul ignore end*/
  var characterDiff = new
  /*istanbul ignore start*/
  _base$6
  /*istanbul ignore end*/
  [
  /*istanbul ignore start*/
  "default"
  /*istanbul ignore end*/
  ]();

  /*istanbul ignore start*/
  character.characterDiff = characterDiff;

  /*istanbul ignore end*/
  function diffChars(oldStr, newStr, options) {
    return characterDiff.diff(oldStr, newStr, options);
  }

  var word = {};

  var params = {};

  /*istanbul ignore start*/

  Object.defineProperty(params, "__esModule", {
    value: true
  });
  params.generateOptions = generateOptions;

  /*istanbul ignore end*/
  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;
  }

  /*istanbul ignore start*/

  Object.defineProperty(word, "__esModule", {
    value: true
  });
  word.diffWords = diffWords;
  word.diffWordsWithSpace = diffWordsWithSpace;
  word.wordDiff = void 0;

  /*istanbul ignore end*/
  var
  /*istanbul ignore start*/
  _base$5 = _interopRequireDefault$6(base)
  /*istanbul ignore end*/
  ;

  var
  /*istanbul ignore start*/
  _params$1 = params
  /*istanbul ignore end*/
  ;

  /*istanbul ignore start*/ function _interopRequireDefault$6(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 = new
  /*istanbul ignore start*/
  _base$5
  /*istanbul ignore end*/
  [
  /*istanbul ignore start*/
  "default"
  /*istanbul ignore end*/
  ]();

  /*istanbul ignore start*/
  word.wordDiff = wordDiff;

  /*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) {
    // All whitespace symbols except newline group into one token, each newline - in separate token
    var tokens = value.split(/([^\S\r\n]+|[()[\]{}'"\r\n]|\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*/
    (/*istanbul ignore end*/

    /*istanbul ignore start*/
    0, _params$1
    /*istanbul ignore end*/
    .
    /*istanbul ignore start*/
    generateOptions)
    /*istanbul ignore end*/
    (options, {
      ignoreWhitespace: true
    });
    return wordDiff.diff(oldStr, newStr, options);
  }

  function diffWordsWithSpace(oldStr, newStr, options) {
    return wordDiff.diff(oldStr, newStr, options);
  }

  var line = {};

  /*istanbul ignore start*/

  Object.defineProperty(line, "__esModule", {
    value: true
  });
  line.diffLines = diffLines;
  line.diffTrimmedLines = diffTrimmedLines;
  line.lineDiff = void 0;

  /*istanbul ignore end*/
  var
  /*istanbul ignore start*/
  _base$4 = _interopRequireDefault$5(base)
  /*istanbul ignore end*/
  ;

  var
  /*istanbul ignore start*/
  _params = params
  /*istanbul ignore end*/
  ;

  /*istanbul ignore start*/ function _interopRequireDefault$5(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

  /*istanbul ignore end*/
  var lineDiff = new
  /*istanbul ignore start*/
  _base$4
  /*istanbul ignore end*/
  [
  /*istanbul ignore start*/
  "default"
  /*istanbul ignore end*/
  ]();

  /*istanbul ignore start*/
  line.lineDiff = lineDiff;

  /*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*/
    (/*istanbul ignore end*/

    /*istanbul ignore start*/
    0, _params
    /*istanbul ignore end*/
    .
    /*istanbul ignore start*/
    generateOptions)
    /*istanbul ignore end*/
    (callback, {
      ignoreWhitespace: true
    });
    return lineDiff.diff(oldStr, newStr, options);
  }

  var sentence = {};

  /*istanbul ignore start*/

  Object.defineProperty(sentence, "__esModule", {
    value: true
  });
  sentence.diffSentences = diffSentences;
  sentence.sentenceDiff = void 0;

  /*istanbul ignore end*/
  var
  /*istanbul ignore start*/
  _base$3 = _interopRequireDefault$4(base)
  /*istanbul ignore end*/
  ;

  /*istanbul ignore start*/ function _interopRequireDefault$4(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

  /*istanbul ignore end*/
  var sentenceDiff = new
  /*istanbul ignore start*/
  _base$3
  /*istanbul ignore end*/
  [
  /*istanbul ignore start*/
  "default"
  /*istanbul ignore end*/
  ]();

  /*istanbul ignore start*/
  sentence.sentenceDiff = sentenceDiff;

  /*istanbul ignore end*/
  sentenceDiff.tokenize = function (value) {
    return value.split(/(\S.+?[.!?])(?=\s+|$)/);
  };

  function diffSentences(oldStr, newStr, callback) {
    return sentenceDiff.diff(oldStr, newStr, callback);
  }

  var css = {};

  /*istanbul ignore start*/

  Object.defineProperty(css, "__esModule", {
    value: true
  });
  css.diffCss = diffCss;
  css.cssDiff = void 0;

  /*istanbul ignore end*/
  var
  /*istanbul ignore start*/
  _base$2 = _interopRequireDefault$3(base)
  /*istanbul ignore end*/
  ;

  /*istanbul ignore start*/ function _interopRequireDefault$3(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

  /*istanbul ignore end*/
  var cssDiff = new
  /*istanbul ignore start*/
  _base$2
  /*istanbul ignore end*/
  [
  /*istanbul ignore start*/
  "default"
  /*istanbul ignore end*/
  ]();

  /*istanbul ignore start*/
  css.cssDiff = cssDiff;

  /*istanbul ignore end*/
  cssDiff.tokenize = function (value) {
    return value.split(/([{}:;,]|\s+)/);
  };

  function diffCss(oldStr, newStr, callback) {
    return cssDiff.diff(oldStr, newStr, callback);
  }

  var json$1 = {};

  /*istanbul ignore start*/

  Object.defineProperty(json$1, "__esModule", {
    value: true
  });
  json$1.diffJson = diffJson;
  json$1.canonicalize = canonicalize;
  json$1.jsonDiff = void 0;

  /*istanbul ignore end*/
  var
  /*istanbul ignore start*/
  _base$1 = _interopRequireDefault$2(base)
  /*istanbul ignore end*/
  ;

  var
  /*istanbul ignore start*/
  _line$1 = line
  /*istanbul ignore end*/
  ;

  /*istanbul ignore start*/ function _interopRequireDefault$2(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

  function _typeof(obj) { "@babel/helpers - typeof"; 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); }

  /*istanbul ignore end*/
  var objectPrototypeToString = Object.prototype.toString;
  var jsonDiff = new
  /*istanbul ignore start*/
  _base$1
  /*istanbul ignore end*/
  [
  /*istanbul ignore start*/
  "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:

  /*istanbul ignore start*/
  json$1.jsonDiff = jsonDiff;

  /*istanbul ignore end*/
  jsonDiff.useLongestToken = true;
  jsonDiff.tokenize =
  /*istanbul ignore start*/
  _line$1
  /*istanbul ignore end*/
  .
  /*istanbul ignore start*/
  lineDiff
  /*istanbul ignore end*/
  .tokenize;

  jsonDiff.castInput = function (value) {
    /*istanbul ignore start*/
    var _this$options =
    /*istanbul ignore end*/
    this.options,
        undefinedReplacement = _this$options.undefinedReplacement,
        _this$options$stringi = _this$options.stringifyReplacer,
        stringifyReplacer = _this$options$stringi === void 0 ? function (k, v)
    /*istanbul ignore start*/
    {
      return (
        /*istanbul ignore end*/
        typeof v === 'undefined' ? undefinedReplacement : v
      );
    } : _this$options$stringi;
    return typeof value === 'string' ? value : JSON.stringify(canonicalize(value, null, null, stringifyReplacer), stringifyReplacer, '  ');
  };

  jsonDiff.equals = function (left, right) {
    return (
      /*istanbul ignore start*/
      _base$1
      /*istanbul ignore end*/
      [
      /*istanbul ignore start*/
      "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;

    for (i = 0; i < stack.length; i += 1) {
      if (stack[i] === obj) {
        return replacementStack[i];
      }
    }

    var canonicalizedObj;

    if ('[object Array]' === objectPrototypeToString.call(obj)) {
      stack.push(obj);
      canonicalizedObj = new Array(obj.length);
      replacementStack.push(canonicalizedObj);

      for (i = 0; i < obj.length; i += 1) {
        canonicalizedObj[i] = canonicalize(obj[i], stack, replacementStack, replacer, key);
      }

      stack.pop();
      replacementStack.pop();
      return canonicalizedObj;
    }

    if (obj && obj.toJSON) {
      obj = obj.toJSON();
    }

    if (
    /*istanbul ignore start*/
    _typeof(
    /*istanbul ignore end*/
    obj) === 'object' && obj !== null) {
      stack.push(obj);
      canonicalizedObj = {};
      replacementStack.push(canonicalizedObj);

      var sortedKeys = [],
          _key;

      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;
  }

  var array$1 = {};

  /*istanbul ignore start*/

  Object.defineProperty(array$1, "__esModule", {
    value: true
  });
  array$1.diffArrays = diffArrays;
  array$1.arrayDiff = void 0;

  /*istanbul ignore end*/
  var
  /*istanbul ignore start*/
  _base = _interopRequireDefault$1(base)
  /*istanbul ignore end*/
  ;

  /*istanbul ignore start*/ function _interopRequireDefault$1(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

  /*istanbul ignore end*/
  var arrayDiff = new
  /*istanbul ignore start*/
  _base
  /*istanbul ignore end*/
  [
  /*istanbul ignore start*/
  "default"
  /*istanbul ignore end*/
  ]();

  /*istanbul ignore start*/
  array$1.arrayDiff = arrayDiff;

  /*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);
  }

  var apply = {};

  var parse$2 = {};

  /*istanbul ignore start*/

  Object.defineProperty(parse$2, "__esModule", {
    value: true
  });
  parse$2.parsePatch = parsePatch;

  /*istanbul ignore end*/
  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: typeof chunkHeader[2] === 'undefined' ? 1 : +chunkHeader[2],
        newStart: +chunkHeader[3],
        newLines: typeof chunkHeader[4] === 'undefined' ? 1 : +chunkHeader[4],
        lines: [],
        linedelimiters: []
      }; // Unified Diff Format quirk: If the chunk size is 0,
      // the first number is one lower than one would expect.
      // https://www.artima.com/weblogs/viewpost.jsp?thread=164293

      if (hunk.oldLines === 0) {
        hunk.oldStart += 1;
      }

      if (hunk.newLines === 0) {
        hunk.newStart += 1;
      }

      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;
  }

  var distanceIterator = {};

  /*istanbul ignore start*/

  (function (exports) {

  Object.defineProperty(exports, "__esModule", {
    value: true
  });
  exports["default"] = _default;

  /*istanbul ignore end*/
  // Iterator that traverses in the range of [min, max], stepping
  // by distance from a given start position. I.e. for [0, 4], with
  // start of 2, this will iterate 2, 3, 1, 4, 0.
  function
  /*istanbul ignore start*/
  _default
  /*istanbul ignore end*/
  (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

    };
  }

  }(distanceIterator));

  /*istanbul ignore start*/

  Object.defineProperty(apply, "__esModule", {
    value: true
  });
  apply.applyPatch = applyPatch;
  apply.applyPatches = applyPatches;

  /*istanbul ignore end*/
  var
  /*istanbul ignore start*/
  _parse$1 = parse$2
  /*istanbul ignore end*/
  ;

  var
  /*istanbul ignore start*/
  _distanceIterator = _interopRequireDefault(distanceIterator)
  /*istanbul ignore end*/
  ;

  /*istanbul ignore start*/ 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*/
      (/*istanbul ignore end*/

      /*istanbul ignore start*/
      0, _parse$1
      /*istanbul ignore end*/
      .
      /*istanbul ignore start*/
      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,
        addEOFNL;
    /**
     * 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*/
      (/*istanbul ignore end*/

      /*istanbul ignore start*/
      0, _distanceIterator
      /*istanbul ignore end*/
      [
      /*istanbul ignore start*/
      "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;

      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*/
      (/*istanbul ignore end*/

      /*istanbul ignore start*/
      0, _parse$1
      /*istanbul ignore end*/
      .
      /*istanbul ignore start*/
      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();
  }

  var merge$1 = {};

  var create = {};

  /*istanbul ignore start*/

  Object.defineProperty(create, "__esModule", {
    value: true
  });
  create.structuredPatch = structuredPatch;
  create.formatPatch = formatPatch;
  create.createTwoFilesPatch = createTwoFilesPatch;
  create.createPatch = createPatch;

  /*istanbul ignore end*/
  var
  /*istanbul ignore start*/
  _line = line
  /*istanbul ignore end*/
  ;

  /*istanbul ignore start*/ function _toConsumableArray$1(arr) { return _arrayWithoutHoles$1(arr) || _iterableToArray$1(arr) || _unsupportedIterableToArray$1(arr) || _nonIterableSpread$1(); }

  function _nonIterableSpread$1() { throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }

  function _unsupportedIterableToArray$1(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray$1(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray$1(o, minLen); }

  function _iterableToArray$1(iter) { if (typeof Symbol !== "undefined" && Symbol.iterator in Object(iter)) return Array.from(iter); }

  function _arrayWithoutHoles$1(arr) { if (Array.isArray(arr)) return _arrayLikeToArray$1(arr); }

  function _arrayLikeToArray$1(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }

  /*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*/
    (/*istanbul ignore end*/

    /*istanbul ignore start*/
    0, _line
    /*istanbul ignore end*/
    .
    /*istanbul ignore start*/
    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*/

        /*istanbul ignore end*/

        /*istanbul ignore start*/
        (_curRange =
        /*istanbul ignore end*/
        curRange).push.apply(
        /*istanbul ignore start*/
        _curRange
        /*istanbul ignore end*/
        ,
        /*istanbul ignore start*/
        _toConsumableArray$1(
        /*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*/

            /*istanbul ignore end*/

            /*istanbul ignore start*/
            (_curRange2 =
            /*istanbul ignore end*/
            curRange).push.apply(
            /*istanbul ignore start*/
            _curRange2
            /*istanbul ignore end*/
            ,
            /*istanbul ignore start*/
            _toConsumableArray$1(
            /*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*/

            /*istanbul ignore end*/

            /*istanbul ignore start*/
            (_curRange3 =
            /*istanbul ignore end*/
            curRange).push.apply(
            /*istanbul ignore start*/
            _curRange3
            /*istanbul ignore end*/
            ,
            /*istanbul ignore start*/
            _toConsumableArray$1(
            /*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);
              var noNlBeforeAdds = lines.length == 0 && curRange.length > hunk.oldLines;

              if (!oldEOFNewline && noNlBeforeAdds && oldStr.length > 0) {
                // special case: old has no eol and no trailing context; no-nl can end up before adds
                // however, if the old file is empty, do not output the no-nl line
                curRange.splice(hunk.oldLines, 0, '\\ No newline at end of file');
              }

              if (!oldEOFNewline && !noNlBeforeAdds || !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 formatPatch(diff) {
    var ret = [];

    if (diff.oldFileName == diff.newFileName) {
      ret.push('Index: ' + diff.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]; // Unified Diff Format quirk: If the chunk size is 0,
      // the first number is one lower than one would expect.
      // https://www.artima.com/weblogs/viewpost.jsp?thread=164293

      if (hunk.oldLines === 0) {
        hunk.oldStart -= 1;
      }

      if (hunk.newLines === 0) {
        hunk.newStart -= 1;
      }

      ret.push('@@ -' + hunk.oldStart + ',' + hunk.oldLines + ' +' + hunk.newStart + ',' + hunk.newLines + ' @@');
      ret.push.apply(ret, hunk.lines);
    }

    return ret.join('\n') + '\n';
  }

  function createTwoFilesPatch(oldFileName, newFileName, oldStr, newStr, oldHeader, newHeader, options) {
    return formatPatch(structuredPatch(oldFileName, newFileName, oldStr, newStr, oldHeader, newHeader, options));
  }

  function createPatch(fileName, oldStr, newStr, oldHeader, newHeader, options) {
    return createTwoFilesPatch(fileName, fileName, oldStr, newStr, oldHeader, newHeader, options);
  }

  var array = {};

  /*istanbul ignore start*/

  Object.defineProperty(array, "__esModule", {
    value: true
  });
  array.arrayEqual = arrayEqual;
  array.arrayStartsWith = arrayStartsWith;

  /*istanbul ignore end*/
  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;
  }

  /*istanbul ignore start*/

  Object.defineProperty(merge$1, "__esModule", {
    value: true
  });
  merge$1.calcLineCount = calcLineCount;
  merge$1.merge = merge;

  /*istanbul ignore end*/
  var
  /*istanbul ignore start*/
  _create = create
  /*istanbul ignore end*/
  ;

  var
  /*istanbul ignore start*/
  _parse = parse$2
  /*istanbul ignore end*/
  ;

  var
  /*istanbul ignore start*/
  _array = array
  /*istanbul ignore end*/
  ;

  /*istanbul ignore start*/ function _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread(); }

  function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }

  function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }

  function _iterableToArray(iter) { if (typeof Symbol !== "undefined" && Symbol.iterator in Object(iter)) return Array.from(iter); }

  function _arrayWithoutHoles(arr) { if (Array.isArray(arr)) return _arrayLikeToArray(arr); }

  function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }

  /*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*/
          (/*istanbul ignore end*/

          /*istanbul ignore start*/
          0, _parse
          /*istanbul ignore end*/
          .
          /*istanbul ignore start*/
          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*/
        (/*istanbul ignore end*/

        /*istanbul ignore start*/
        0, _create
        /*istanbul ignore end*/
        .
        /*istanbul ignore start*/
        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*/

        /*istanbul ignore end*/

        /*istanbul ignore start*/
        (_hunk$lines =
        /*istanbul ignore end*/
        hunk.lines).push.apply(
        /*istanbul ignore start*/
        _hunk$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*/

        /*istanbul ignore end*/

        /*istanbul ignore start*/
        (_hunk$lines2 =
        /*istanbul ignore end*/
        hunk.lines).push.apply(
        /*istanbul ignore start*/
        _hunk$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*/
      (/*istanbul ignore end*/

      /*istanbul ignore start*/
      0, _array
      /*istanbul ignore end*/
      .
      /*istanbul ignore start*/
      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*/

        /*istanbul ignore end*/

        /*istanbul ignore start*/
        (_hunk$lines3 =
        /*istanbul ignore end*/
        hunk.lines).push.apply(
        /*istanbul ignore start*/
        _hunk$lines3
        /*istanbul ignore end*/
        ,
        /*istanbul ignore start*/
        _toConsumableArray(
        /*istanbul ignore end*/
        myChanges));

        return;
      } else if (
      /*istanbul ignore start*/
      (/*istanbul ignore end*/

      /*istanbul ignore start*/
      0, _array
      /*istanbul ignore end*/
      .
      /*istanbul ignore start*/
      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*/

        /*istanbul ignore end*/

        /*istanbul ignore start*/
        (_hunk$lines4 =
        /*istanbul ignore end*/
        hunk.lines).push.apply(
        /*istanbul ignore start*/
        _hunk$lines4
        /*istanbul ignore end*/
        ,
        /*istanbul ignore start*/
        _toConsumableArray(
        /*istanbul ignore end*/
        theirChanges));

        return;
      }
    } else if (
    /*istanbul ignore start*/
    (/*istanbul ignore end*/

    /*istanbul ignore start*/
    0, _array
    /*istanbul ignore end*/
    .
    /*istanbul ignore start*/
    arrayEqual)
    /*istanbul ignore end*/
    (myChanges, theirChanges)) {
      /*istanbul ignore start*/
      var _hunk$lines5;

      /*istanbul ignore end*/

      /*istanbul ignore start*/

      /*istanbul ignore end*/

      /*istanbul ignore start*/
      (_hunk$lines5 =
      /*istanbul ignore end*/
      hunk.lines).push.apply(
      /*istanbul ignore start*/
      _hunk$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*/

      /*istanbul ignore end*/

      /*istanbul ignore start*/
      (_hunk$lines6 =
      /*istanbul ignore end*/
      hunk.lines).push.apply(
      /*istanbul ignore start*/
      _hunk$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
    };
  }

  var dmp = {};

  /*istanbul ignore start*/

  Object.defineProperty(dmp, "__esModule", {
    value: true
  });
  dmp.convertChangesToDMP = convertChangesToDMP;

  /*istanbul ignore end*/
  // See: http://code.google.com/p/google-diff-match-patch/wiki/API
  function convertChangesToDMP(changes) {
    var ret = [],
        change,
        operation;

    for (var i = 0; i < changes.length; i++) {
      change = changes[i];

      if (change.added) {
        operation = 1;
      } else if (change.removed) {
        operation = -1;
      } else {
        operation = 0;
      }

      ret.push([operation, change.value]);
    }

    return ret;
  }

  var xml = {};

  /*istanbul ignore start*/

  Object.defineProperty(xml, "__esModule", {
    value: true
  });
  xml.convertChangesToXML = convertChangesToXML;

  /*istanbul ignore end*/
  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;
  }

  /*istanbul ignore start*/

  (function (exports) {

  Object.defineProperty(exports, "__esModule", {
    value: true
  });
  Object.defineProperty(exports, "Diff", {
    enumerable: true,
    get: function get() {
      return _base["default"];
    }
  });
  Object.defineProperty(exports, "diffChars", {
    enumerable: true,
    get: function get() {
      return _character.diffChars;
    }
  });
  Object.defineProperty(exports, "diffWords", {
    enumerable: true,
    get: function get() {
      return _word.diffWords;
    }
  });
  Object.defineProperty(exports, "diffWordsWithSpace", {
    enumerable: true,
    get: function get() {
      return _word.diffWordsWithSpace;
    }
  });
  Object.defineProperty(exports, "diffLines", {
    enumerable: true,
    get: function get() {
      return _line.diffLines;
    }
  });
  Object.defineProperty(exports, "diffTrimmedLines", {
    enumerable: true,
    get: function get() {
      return _line.diffTrimmedLines;
    }
  });
  Object.defineProperty(exports, "diffSentences", {
    enumerable: true,
    get: function get() {
      return _sentence.diffSentences;
    }
  });
  Object.defineProperty(exports, "diffCss", {
    enumerable: true,
    get: function get() {
      return _css.diffCss;
    }
  });
  Object.defineProperty(exports, "diffJson", {
    enumerable: true,
    get: function get() {
      return _json.diffJson;
    }
  });
  Object.defineProperty(exports, "canonicalize", {
    enumerable: true,
    get: function get() {
      return _json.canonicalize;
    }
  });
  Object.defineProperty(exports, "diffArrays", {
    enumerable: true,
    get: function get() {
      return _array.diffArrays;
    }
  });
  Object.defineProperty(exports, "applyPatch", {
    enumerable: true,
    get: function get() {
      return _apply.applyPatch;
    }
  });
  Object.defineProperty(exports, "applyPatches", {
    enumerable: true,
    get: function get() {
      return _apply.applyPatches;
    }
  });
  Object.defineProperty(exports, "parsePatch", {
    enumerable: true,
    get: function get() {
      return _parse.parsePatch;
    }
  });
  Object.defineProperty(exports, "merge", {
    enumerable: true,
    get: function get() {
      return _merge.merge;
    }
  });
  Object.defineProperty(exports, "structuredPatch", {
    enumerable: true,
    get: function get() {
      return _create.structuredPatch;
    }
  });
  Object.defineProperty(exports, "createTwoFilesPatch", {
    enumerable: true,
    get: function get() {
      return _create.createTwoFilesPatch;
    }
  });
  Object.defineProperty(exports, "createPatch", {
    enumerable: true,
    get: function get() {
      return _create.createPatch;
    }
  });
  Object.defineProperty(exports, "convertChangesToDMP", {
    enumerable: true,
    get: function get() {
      return _dmp.convertChangesToDMP;
    }
  });
  Object.defineProperty(exports, "convertChangesToXML", {
    enumerable: true,
    get: function get() {
      return _xml.convertChangesToXML;
    }
  });

  /*istanbul ignore end*/
  var
  /*istanbul ignore start*/
  _base = _interopRequireDefault(base)
  /*istanbul ignore end*/
  ;

  var
  /*istanbul ignore start*/
  _character = character
  /*istanbul ignore end*/
  ;

  var
  /*istanbul ignore start*/
  _word = word
  /*istanbul ignore end*/
  ;

  var
  /*istanbul ignore start*/
  _line = line
  /*istanbul ignore end*/
  ;

  var
  /*istanbul ignore start*/
  _sentence = sentence
  /*istanbul ignore end*/
  ;

  var
  /*istanbul ignore start*/
  _css = css
  /*istanbul ignore end*/
  ;

  var
  /*istanbul ignore start*/
  _json = json$1
  /*istanbul ignore end*/
  ;

  var
  /*istanbul ignore start*/
  _array = array$1
  /*istanbul ignore end*/
  ;

  var
  /*istanbul ignore start*/
  _apply = apply
  /*istanbul ignore end*/
  ;

  var
  /*istanbul ignore start*/
  _parse = parse$2
  /*istanbul ignore end*/
  ;

  var
  /*istanbul ignore start*/
  _merge = merge$1
  /*istanbul ignore end*/
  ;

  var
  /*istanbul ignore start*/
  _create = create
  /*istanbul ignore end*/
  ;

  var
  /*istanbul ignore start*/
  _dmp = dmp
  /*istanbul ignore end*/
  ;

  var
  /*istanbul ignore start*/
  _xml = xml
  /*istanbul ignore end*/
  ;

  /*istanbul ignore start*/ function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

  /*istanbul ignore end*/

  }(lib));

  /**
   * Helpers.
   */

  var s$1 = 1000;
  var m$1 = s$1 * 60;
  var h$1 = m$1 * 60;
  var d$1 = h$1 * 24;
  var w$1 = d$1 * 7;
  var y$1 = d$1 * 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
   */

  var ms$1 = function (val, options) {
    options = options || {};
    var type = typeof val;
    if (type === 'string' && val.length > 0) {
      return parse$1(val);
    } else if (type === 'number' && isFinite(val)) {
      return options.long ? fmtLong$1(val) : fmtShort$1(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$1(str) {
    str = String(str);
    if (str.length > 100) {
      return;
    }
    var match = /^(-?(?:\d+)?\.?\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|weeks?|w|years?|yrs?|y)?$/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$1;
      case 'weeks':
      case 'week':
      case 'w':
        return n * w$1;
      case 'days':
      case 'day':
      case 'd':
        return n * d$1;
      case 'hours':
      case 'hour':
      case 'hrs':
      case 'hr':
      case 'h':
        return n * h$1;
      case 'minutes':
      case 'minute':
      case 'mins':
      case 'min':
      case 'm':
        return n * m$1;
      case 'seconds':
      case 'second':
      case 'secs':
      case 'sec':
      case 's':
        return n * s$1;
      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$1(ms) {
    var msAbs = Math.abs(ms);
    if (msAbs >= d$1) {
      return Math.round(ms / d$1) + 'd';
    }
    if (msAbs >= h$1) {
      return Math.round(ms / h$1) + 'h';
    }
    if (msAbs >= m$1) {
      return Math.round(ms / m$1) + 'm';
    }
    if (msAbs >= s$1) {
      return Math.round(ms / s$1) + 's';
    }
    return ms + 'ms';
  }

  /**
   * Long format for `ms`.
   *
   * @param {Number} ms
   * @return {String}
   * @api private
   */

  function fmtLong$1(ms) {
    var msAbs = Math.abs(ms);
    if (msAbs >= d$1) {
      return plural$1(ms, msAbs, d$1, 'day');
    }
    if (msAbs >= h$1) {
      return plural$1(ms, msAbs, h$1, 'hour');
    }
    if (msAbs >= m$1) {
      return plural$1(ms, msAbs, m$1, 'minute');
    }
    if (msAbs >= s$1) {
      return plural$1(ms, msAbs, s$1, 'second');
    }
    return ms + ' ms';
  }

  /**
   * Pluralization helper.
   */

  function plural$1(ms, msAbs, n, name) {
    var isPlural = msAbs >= n * 1.5;
    return Math.round(ms / n) + ' ' + name + (isPlural ? 's' : '');
  }

  var lookup = [];
  var revLookup = [];
  var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array;
  var inited = false;
  function init () {
    inited = true;
    var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
    for (var i = 0, len = code.length; i < len; ++i) {
      lookup[i] = code[i];
      revLookup[code.charCodeAt(i)] = i;
    }

    revLookup['-'.charCodeAt(0)] = 62;
    revLookup['_'.charCodeAt(0)] = 63;
  }

  function toByteArray (b64) {
    if (!inited) {
      init();
    }
    var i, j, l, tmp, placeHolders, arr;
    var len = b64.length;

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

    // the number of equal signs (place holders)
    // if there are two placeholders, than the two characters before it
    // represent one byte
    // if there is only one, then the three characters before it represent 2 bytes
    // this is just a cheap hack to not do indexOf twice
    placeHolders = b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0;

    // base64 is 4/3 + up to two characters of the original data
    arr = new Arr(len * 3 / 4 - placeHolders);

    // if there are placeholders, only get up to the last complete 4 chars
    l = placeHolders > 0 ? len - 4 : len;

    var L = 0;

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

    if (placeHolders === 2) {
      tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4);
      arr[L++] = tmp & 0xFF;
    } else if (placeHolders === 1) {
      tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2);
      arr[L++] = (tmp >> 8) & 0xFF;
      arr[L++] = tmp & 0xFF;
    }

    return arr
  }

  function tripletToBase64 (num) {
    return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F]
  }

  function encodeChunk (uint8, start, end) {
    var tmp;
    var output = [];
    for (var i = start; i < end; i += 3) {
      tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2]);
      output.push(tripletToBase64(tmp));
    }
    return output.join('')
  }

  function fromByteArray (uint8) {
    if (!inited) {
      init();
    }
    var tmp;
    var len = uint8.length;
    var extraBytes = len % 3; // if we have 1 byte left, pad 2 bytes
    var output = '';
    var parts = [];
    var maxChunkLength = 16383; // must be multiple of 3

    // go through the array every three bytes, we'll deal with trailing stuff later
    for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
      parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)));
    }

    // pad the end with zeros, but make sure to not forget the extra bytes
    if (extraBytes === 1) {
      tmp = uint8[len - 1];
      output += lookup[tmp >> 2];
      output += lookup[(tmp << 4) & 0x3F];
      output += '==';
    } else if (extraBytes === 2) {
      tmp = (uint8[len - 2] << 8) + (uint8[len - 1]);
      output += lookup[tmp >> 10];
      output += lookup[(tmp >> 4) & 0x3F];
      output += lookup[(tmp << 2) & 0x3F];
      output += '=';
    }

    parts.push(output);

    return parts.join('')
  }

  function read (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)
  }

  function write (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;
  }

  var toString$1 = {}.toString;

  var isArray = Array.isArray || function (arr) {
    return toString$1.call(arr) == '[object Array]';
  };

  var INSPECT_MAX_BYTES = 50;

  /**
   * If `Buffer.TYPED_ARRAY_SUPPORT`:
   *   === true    Use Uint8Array implementation (fastest)
   *   === false   Use Object implementation (most compatible, even IE6)
   *
   * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
   * Opera 11.6+, iOS 4.2+.
   *
   * Due to various browser bugs, sometimes the Object implementation will be used even
   * when the browser supports typed arrays.
   *
   * Note:
   *
   *   - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,
   *     See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
   *
   *   - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
   *
   *   - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
   *     incorrect length in some situations.

   * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they
   * get the Object implementation, which is slower but behaves correctly.
   */
  Buffer.TYPED_ARRAY_SUPPORT = global$1.TYPED_ARRAY_SUPPORT !== undefined
    ? global$1.TYPED_ARRAY_SUPPORT
    : true;

  function kMaxLength () {
    return Buffer.TYPED_ARRAY_SUPPORT
      ? 0x7fffffff
      : 0x3fffffff
  }

  function createBuffer (that, length) {
    if (kMaxLength() < length) {
      throw new RangeError('Invalid typed array length')
    }
    if (Buffer.TYPED_ARRAY_SUPPORT) {
      // Return an augmented `Uint8Array` instance, for best performance
      that = new Uint8Array(length);
      that.__proto__ = Buffer.prototype;
    } else {
      // Fallback: Return an object instance of the Buffer class
      if (that === null) {
        that = new Buffer(length);
      }
      that.length = length;
    }

    return that
  }

  /**
   * The Buffer constructor returns instances of `Uint8Array` that have their
   * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
   * `Uint8Array`, so the returned instances will have all the node `Buffer` methods
   * and the `Uint8Array` methods. Square bracket notation works as expected -- it
   * returns a single octet.
   *
   * The `Uint8Array` prototype remains unmodified.
   */

  function Buffer (arg, encodingOrOffset, length) {
    if (!Buffer.TYPED_ARRAY_SUPPORT && !(this instanceof Buffer)) {
      return new Buffer(arg, encodingOrOffset, length)
    }

    // Common case.
    if (typeof arg === 'number') {
      if (typeof encodingOrOffset === 'string') {
        throw new Error(
          'If encoding is specified then the first argument must be a string'
        )
      }
      return allocUnsafe(this, arg)
    }
    return from(this, arg, encodingOrOffset, length)
  }

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

  // TODO: Legacy, not needed anymore. Remove in next major version.
  Buffer._augment = function (arr) {
    arr.__proto__ = Buffer.prototype;
    return arr
  };

  function from (that, value, encodingOrOffset, length) {
    if (typeof value === 'number') {
      throw new TypeError('"value" argument must not be a number')
    }

    if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {
      return fromArrayBuffer(that, value, encodingOrOffset, length)
    }

    if (typeof value === 'string') {
      return fromString(that, value, encodingOrOffset)
    }

    return fromObject(that, value)
  }

  /**
   * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
   * if value is a number.
   * Buffer.from(str[, encoding])
   * Buffer.from(array)
   * Buffer.from(buffer)
   * Buffer.from(arrayBuffer[, byteOffset[, length]])
   **/
  Buffer.from = function (value, encodingOrOffset, length) {
    return from(null, value, encodingOrOffset, length)
  };

  if (Buffer.TYPED_ARRAY_SUPPORT) {
    Buffer.prototype.__proto__ = Uint8Array.prototype;
    Buffer.__proto__ = Uint8Array;
  }

  function assertSize (size) {
    if (typeof size !== 'number') {
      throw new TypeError('"size" argument must be a number')
    } else if (size < 0) {
      throw new RangeError('"size" argument must not be negative')
    }
  }

  function alloc (that, size, fill, encoding) {
    assertSize(size);
    if (size <= 0) {
      return createBuffer(that, size)
    }
    if (fill !== undefined) {
      // Only pay attention to encoding if it's a string. This
      // prevents accidentally sending in a number that would
      // be interpretted as a start offset.
      return typeof encoding === 'string'
        ? createBuffer(that, size).fill(fill, encoding)
        : createBuffer(that, size).fill(fill)
    }
    return createBuffer(that, size)
  }

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

  function allocUnsafe (that, size) {
    assertSize(size);
    that = createBuffer(that, size < 0 ? 0 : checked(size) | 0);
    if (!Buffer.TYPED_ARRAY_SUPPORT) {
      for (var i = 0; i < size; ++i) {
        that[i] = 0;
      }
    }
    return that
  }

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

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

    if (!Buffer.isEncoding(encoding)) {
      throw new TypeError('"encoding" must be a valid string encoding')
    }

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

    var actual = that.write(string, encoding);

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

    return that
  }

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

  function fromArrayBuffer (that, array, byteOffset, length) {
    array.byteLength; // this throws if `array` is not a valid ArrayBuffer

    if (byteOffset < 0 || array.byteLength < byteOffset) {
      throw new RangeError('\'offset\' is out of bounds')
    }

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

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

    if (Buffer.TYPED_ARRAY_SUPPORT) {
      // Return an augmented `Uint8Array` instance, for best performance
      that = array;
      that.__proto__ = Buffer.prototype;
    } else {
      // Fallback: Return an object instance of the Buffer class
      that = fromArrayLike(that, array);
    }
    return that
  }

  function fromObject (that, obj) {
    if (internalIsBuffer(obj)) {
      var len = checked(obj.length) | 0;
      that = createBuffer(that, len);

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

      obj.copy(that, 0, 0, len);
      return that
    }

    if (obj) {
      if ((typeof ArrayBuffer !== 'undefined' &&
          obj.buffer instanceof ArrayBuffer) || 'length' in obj) {
        if (typeof obj.length !== 'number' || isnan(obj.length)) {
          return createBuffer(that, 0)
        }
        return fromArrayLike(that, obj)
      }

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

    throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')
  }

  function checked (length) {
    // Note: cannot use `length < kMaxLength()` here because that fails when
    // length is NaN (which is otherwise coerced to zero.)
    if (length >= kMaxLength()) {
      throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
                           'size: 0x' + kMaxLength().toString(16) + ' bytes')
    }
    return length | 0
  }
  Buffer.isBuffer = isBuffer;
  function internalIsBuffer (b) {
    return !!(b != null && b._isBuffer)
  }

  Buffer.compare = function compare (a, b) {
    if (!internalIsBuffer(a) || !internalIsBuffer(b)) {
      throw new TypeError('Arguments must be Buffers')
    }

    if (a === b) return 0

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

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

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

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

  Buffer.concat = function concat (list, length) {
    if (!isArray(list)) {
      throw new TypeError('"list" argument must be an Array of Buffers')
    }

    if (list.length === 0) {
      return Buffer.alloc(0)
    }

    var i;
    if (length === undefined) {
      length = 0;
      for (i = 0; i < list.length; ++i) {
        length += list[i].length;
      }
    }

    var buffer = Buffer.allocUnsafe(length);
    var pos = 0;
    for (i = 0; i < list.length; ++i) {
      var buf = list[i];
      if (!internalIsBuffer(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 (internalIsBuffer(string)) {
      return string.length
    }
    if (typeof ArrayBuffer !== 'undefined' && typeof ArrayBuffer.isView === 'function' &&
        (ArrayBuffer.isView(string) || string instanceof ArrayBuffer)) {
      return string.byteLength
    }
    if (typeof string !== 'string') {
      string = '' + string;
    }

    var len = string.length;
    if (len === 0) return 0

    // Use a for loop to avoid recursion
    var loweredCase = false;
    for (;;) {
      switch (encoding) {
        case 'ascii':
        case 'latin1':
        case 'binary':
          return len
        case 'utf8':
        case 'utf-8':
        case undefined:
          return utf8ToBytes(string).length
        case 'ucs2':
        case 'ucs-2':
        case 'utf16le':
        case 'utf-16le':
          return len * 2
        case 'hex':
          return len >>> 1
        case 'base64':
          return base64ToBytes(string).length
        default:
          if (loweredCase) return utf8ToBytes(string).length // assume utf8
          encoding = ('' + encoding).toLowerCase();
          loweredCase = true;
      }
    }
  }
  Buffer.byteLength = byteLength;

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

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

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

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

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

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

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

    if (!encoding) encoding = 'utf8';

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

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

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

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

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

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

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

  // The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect
  // Buffer instances.
  Buffer.prototype._isBuffer = true;

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

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

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

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

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

  Buffer.prototype.equals = function equals (b) {
    if (!internalIsBuffer(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 = INSPECT_MAX_BYTES;
    if (this.length > 0) {
      str = this.toString('hex', 0, max).match(/.{2}/g).join(' ');
      if (this.length > max) str += ' ... ';
    }
    return '<Buffer ' + str + '>'
  };

  Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
    if (!internalIsBuffer(target)) {
      throw new TypeError('Argument must be a Buffer')
    }

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

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

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

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

    if (this === target) return 0

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    return -1
  }

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

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

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

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

    // must be an even number of digits
    var strLen = string.length;
    if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')

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

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

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

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

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

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

  Buffer.prototype.write = function write (string, offset, length, encoding) {
    // Buffer#write(string)
    if (offset === undefined) {
      encoding = 'utf8';
      length = this.length;
      offset = 0;
    // Buffer#write(string, encoding)
    } else if (length === undefined && typeof offset === 'string') {
      encoding = offset;
      length = this.length;
      offset = 0;
    // Buffer#write(string, offset[, length][, encoding])
    } else if (isFinite(offset)) {
      offset = offset | 0;
      if (isFinite(length)) {
        length = length | 0;
        if (encoding === undefined) encoding = 'utf8';
      } else {
        encoding = length;
        length = undefined;
      }
    // legacy write(string, encoding, offset, length) - remove in v0.13
    } else {
      throw new Error(
        'Buffer.write(string, encoding, offset[, length]) is no longer supported'
      )
    }

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

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

    if (!encoding) encoding = 'utf8';

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

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

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

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

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

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

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

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

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

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

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

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

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

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

      res.push(codePoint);
      i += bytesPerSequence;
    }

    return decodeCodePointsArray(res)
  }

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    if (end < start) end = start;

    var newBuf;
    if (Buffer.TYPED_ARRAY_SUPPORT) {
      newBuf = this.subarray(start, end);
      newBuf.__proto__ = Buffer.prototype;
    } else {
      var sliceLen = end - start;
      newBuf = new Buffer(sliceLen, undefined);
      for (var i = 0; i < sliceLen; ++i) {
        newBuf[i] = this[i + start];
      }
    }

    return newBuf
  };

  /*
   * Need to make sure that buffer isn't trying to write out of bounds.
   */
  function checkOffset (offset, ext, length) {
    if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
    if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
  }

  Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
    offset = offset | 0;
    byteLength = byteLength | 0;
    if (!noAssert) checkOffset(offset, byteLength, this.length);

    var val = this[offset];
    var mul = 1;
    var i = 0;
    while (++i < byteLength && (mul *= 0x100)) {
      val += this[offset + i] * mul;
    }

    return val
  };

  Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
    offset = offset | 0;
    byteLength = byteLength | 0;
    if (!noAssert) {
      checkOffset(offset, byteLength, this.length);
    }

    var val = this[offset + --byteLength];
    var mul = 1;
    while (byteLength > 0 && (mul *= 0x100)) {
      val += this[offset + --byteLength] * mul;
    }

    return val
  };

  Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
    if (!noAssert) checkOffset(offset, 1, this.length);
    return this[offset]
  };

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

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

  Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
    if (!noAssert) checkOffset(offset, 4, this.length);

    return ((this[offset]) |
        (this[offset + 1] << 8) |
        (this[offset + 2] << 16)) +
        (this[offset + 3] * 0x1000000)
  };

  Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
    if (!noAssert) checkOffset(offset, 4, this.length);

    return (this[offset] * 0x1000000) +
      ((this[offset + 1] << 16) |
      (this[offset + 2] << 8) |
      this[offset + 3])
  };

  Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
    offset = offset | 0;
    byteLength = byteLength | 0;
    if (!noAssert) checkOffset(offset, byteLength, this.length);

    var val = this[offset];
    var mul = 1;
    var i = 0;
    while (++i < byteLength && (mul *= 0x100)) {
      val += this[offset + i] * mul;
    }
    mul *= 0x80;

    if (val >= mul) val -= Math.pow(2, 8 * byteLength);

    return val
  };

  Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
    offset = offset | 0;
    byteLength = byteLength | 0;
    if (!noAssert) checkOffset(offset, byteLength, this.length);

    var i = byteLength;
    var mul = 1;
    var val = this[offset + --i];
    while (i > 0 && (mul *= 0x100)) {
      val += this[offset + --i] * mul;
    }
    mul *= 0x80;

    if (val >= mul) val -= Math.pow(2, 8 * byteLength);

    return val
  };

  Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
    if (!noAssert) checkOffset(offset, 1, this.length);
    if (!(this[offset] & 0x80)) return (this[offset])
    return ((0xff - this[offset] + 1) * -1)
  };

  Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
    if (!noAssert) checkOffset(offset, 2, this.length);
    var val = this[offset] | (this[offset + 1] << 8);
    return (val & 0x8000) ? val | 0xFFFF0000 : val
  };

  Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
    if (!noAssert) checkOffset(offset, 2, this.length);
    var val = this[offset + 1] | (this[offset] << 8);
    return (val & 0x8000) ? val | 0xFFFF0000 : val
  };

  Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
    if (!noAssert) checkOffset(offset, 4, this.length);

    return (this[offset]) |
      (this[offset + 1] << 8) |
      (this[offset + 2] << 16) |
      (this[offset + 3] << 24)
  };

  Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
    if (!noAssert) checkOffset(offset, 4, this.length);

    return (this[offset] << 24) |
      (this[offset + 1] << 16) |
      (this[offset + 2] << 8) |
      (this[offset + 3])
  };

  Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
    if (!noAssert) checkOffset(offset, 4, this.length);
    return read(this, offset, true, 23, 4)
  };

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

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

  Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
    if (!noAssert) checkOffset(offset, 8, this.length);
    return read(this, offset, false, 52, 8)
  };

  function checkInt (buf, value, offset, ext, max, min) {
    if (!internalIsBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
    if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
    if (offset + ext > buf.length) throw new RangeError('Index out of range')
  }

  Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
    value = +value;
    offset = offset | 0;
    byteLength = byteLength | 0;
    if (!noAssert) {
      var maxBytes = Math.pow(2, 8 * byteLength) - 1;
      checkInt(this, value, offset, byteLength, maxBytes, 0);
    }

    var mul = 1;
    var i = 0;
    this[offset] = value & 0xFF;
    while (++i < byteLength && (mul *= 0x100)) {
      this[offset + i] = (value / mul) & 0xFF;
    }

    return offset + byteLength
  };

  Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
    value = +value;
    offset = offset | 0;
    byteLength = byteLength | 0;
    if (!noAssert) {
      var maxBytes = Math.pow(2, 8 * byteLength) - 1;
      checkInt(this, value, offset, byteLength, maxBytes, 0);
    }

    var i = byteLength - 1;
    var mul = 1;
    this[offset + i] = value & 0xFF;
    while (--i >= 0 && (mul *= 0x100)) {
      this[offset + i] = (value / mul) & 0xFF;
    }

    return offset + byteLength
  };

  Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
    value = +value;
    offset = offset | 0;
    if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0);
    if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value);
    this[offset] = (value & 0xff);
    return offset + 1
  };

  function objectWriteUInt16 (buf, value, offset, littleEndian) {
    if (value < 0) value = 0xffff + value + 1;
    for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; ++i) {
      buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
        (littleEndian ? i : 1 - i) * 8;
    }
  }

  Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
    value = +value;
    offset = offset | 0;
    if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0);
    if (Buffer.TYPED_ARRAY_SUPPORT) {
      this[offset] = (value & 0xff);
      this[offset + 1] = (value >>> 8);
    } else {
      objectWriteUInt16(this, value, offset, true);
    }
    return offset + 2
  };

  Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
    value = +value;
    offset = offset | 0;
    if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0);
    if (Buffer.TYPED_ARRAY_SUPPORT) {
      this[offset] = (value >>> 8);
      this[offset + 1] = (value & 0xff);
    } else {
      objectWriteUInt16(this, value, offset, false);
    }
    return offset + 2
  };

  function objectWriteUInt32 (buf, value, offset, littleEndian) {
    if (value < 0) value = 0xffffffff + value + 1;
    for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; ++i) {
      buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff;
    }
  }

  Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
    value = +value;
    offset = offset | 0;
    if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0);
    if (Buffer.TYPED_ARRAY_SUPPORT) {
      this[offset + 3] = (value >>> 24);
      this[offset + 2] = (value >>> 16);
      this[offset + 1] = (value >>> 8);
      this[offset] = (value & 0xff);
    } else {
      objectWriteUInt32(this, value, offset, true);
    }
    return offset + 4
  };

  Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
    value = +value;
    offset = offset | 0;
    if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0);
    if (Buffer.TYPED_ARRAY_SUPPORT) {
      this[offset] = (value >>> 24);
      this[offset + 1] = (value >>> 16);
      this[offset + 2] = (value >>> 8);
      this[offset + 3] = (value & 0xff);
    } else {
      objectWriteUInt32(this, value, offset, false);
    }
    return offset + 4
  };

  Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
    value = +value;
    offset = offset | 0;
    if (!noAssert) {
      var limit = Math.pow(2, 8 * byteLength - 1);

      checkInt(this, value, offset, byteLength, limit - 1, -limit);
    }

    var i = 0;
    var mul = 1;
    var sub = 0;
    this[offset] = value & 0xFF;
    while (++i < byteLength && (mul *= 0x100)) {
      if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
        sub = 1;
      }
      this[offset + i] = ((value / mul) >> 0) - sub & 0xFF;
    }

    return offset + byteLength
  };

  Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
    value = +value;
    offset = offset | 0;
    if (!noAssert) {
      var limit = Math.pow(2, 8 * byteLength - 1);

      checkInt(this, value, offset, byteLength, limit - 1, -limit);
    }

    var i = byteLength - 1;
    var mul = 1;
    var sub = 0;
    this[offset + i] = value & 0xFF;
    while (--i >= 0 && (mul *= 0x100)) {
      if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
        sub = 1;
      }
      this[offset + i] = ((value / mul) >> 0) - sub & 0xFF;
    }

    return offset + byteLength
  };

  Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
    value = +value;
    offset = offset | 0;
    if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80);
    if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value);
    if (value < 0) value = 0xff + value + 1;
    this[offset] = (value & 0xff);
    return offset + 1
  };

  Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
    value = +value;
    offset = offset | 0;
    if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000);
    if (Buffer.TYPED_ARRAY_SUPPORT) {
      this[offset] = (value & 0xff);
      this[offset + 1] = (value >>> 8);
    } else {
      objectWriteUInt16(this, value, offset, true);
    }
    return offset + 2
  };

  Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
    value = +value;
    offset = offset | 0;
    if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000);
    if (Buffer.TYPED_ARRAY_SUPPORT) {
      this[offset] = (value >>> 8);
      this[offset + 1] = (value & 0xff);
    } else {
      objectWriteUInt16(this, value, offset, false);
    }
    return offset + 2
  };

  Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
    value = +value;
    offset = offset | 0;
    if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000);
    if (Buffer.TYPED_ARRAY_SUPPORT) {
      this[offset] = (value & 0xff);
      this[offset + 1] = (value >>> 8);
      this[offset + 2] = (value >>> 16);
      this[offset + 3] = (value >>> 24);
    } else {
      objectWriteUInt32(this, value, offset, true);
    }
    return offset + 4
  };

  Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
    value = +value;
    offset = offset | 0;
    if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000);
    if (value < 0) value = 0xffffffff + value + 1;
    if (Buffer.TYPED_ARRAY_SUPPORT) {
      this[offset] = (value >>> 24);
      this[offset + 1] = (value >>> 16);
      this[offset + 2] = (value >>> 8);
      this[offset + 3] = (value & 0xff);
    } else {
      objectWriteUInt32(this, value, offset, false);
    }
    return offset + 4
  };

  function checkIEEE754 (buf, value, offset, ext, max, min) {
    if (offset + ext > buf.length) throw new RangeError('Index out of range')
    if (offset < 0) throw new RangeError('Index out of range')
  }

  function writeFloat (buf, value, offset, littleEndian, noAssert) {
    if (!noAssert) {
      checkIEEE754(buf, value, offset, 4);
    }
    write(buf, value, offset, littleEndian, 23, 4);
    return offset + 4
  }

  Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
    return writeFloat(this, value, offset, true, noAssert)
  };

  Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
    return writeFloat(this, value, offset, false, noAssert)
  };

  function writeDouble (buf, value, offset, littleEndian, noAssert) {
    if (!noAssert) {
      checkIEEE754(buf, value, offset, 8);
    }
    write(buf, value, offset, littleEndian, 52, 8);
    return offset + 8
  }

  Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
    return writeDouble(this, value, offset, true, noAssert)
  };

  Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
    return writeDouble(this, value, offset, false, noAssert)
  };

  // copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
  Buffer.prototype.copy = function copy (target, targetStart, start, end) {
    if (!start) start = 0;
    if (!end && end !== 0) end = this.length;
    if (targetStart >= target.length) targetStart = target.length;
    if (!targetStart) targetStart = 0;
    if (end > 0 && end < start) end = start;

    // Copy 0 bytes; we're done
    if (end === start) return 0
    if (target.length === 0 || this.length === 0) return 0

    // Fatal error conditions
    if (targetStart < 0) {
      throw new RangeError('targetStart out of bounds')
    }
    if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
    if (end < 0) throw new RangeError('sourceEnd out of bounds')

    // Are we oob?
    if (end > this.length) end = this.length;
    if (target.length - targetStart < end - start) {
      end = target.length - targetStart + start;
    }

    var len = end - start;
    var i;

    if (this === target && start < targetStart && targetStart < end) {
      // descending copy from end
      for (i = len - 1; i >= 0; --i) {
        target[i + targetStart] = this[i + start];
      }
    } else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
      // ascending copy from start
      for (i = 0; i < len; ++i) {
        target[i + targetStart] = this[i + start];
      }
    } else {
      Uint8Array.prototype.set.call(
        target,
        this.subarray(start, start + len),
        targetStart
      );
    }

    return len
  };

  // Usage:
  //    buffer.fill(number[, offset[, end]])
  //    buffer.fill(buffer[, offset[, end]])
  //    buffer.fill(string[, offset[, end]][, encoding])
  Buffer.prototype.fill = function fill (val, start, end, encoding) {
    // Handle string cases:
    if (typeof val === 'string') {
      if (typeof start === 'string') {
        encoding = start;
        start = 0;
        end = this.length;
      } else if (typeof end === 'string') {
        encoding = end;
        end = this.length;
      }
      if (val.length === 1) {
        var code = val.charCodeAt(0);
        if (code < 256) {
          val = code;
        }
      }
      if (encoding !== undefined && typeof encoding !== 'string') {
        throw new TypeError('encoding must be a string')
      }
      if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
        throw new TypeError('Unknown encoding: ' + encoding)
      }
    } else if (typeof val === 'number') {
      val = val & 255;
    }

    // Invalid ranges are not set to a default, so can range check early.
    if (start < 0 || this.length < start || this.length < end) {
      throw new RangeError('Out of range index')
    }

    if (end <= start) {
      return this
    }

    start = start >>> 0;
    end = end === undefined ? this.length : end >>> 0;

    if (!val) val = 0;

    var i;
    if (typeof val === 'number') {
      for (i = start; i < end; ++i) {
        this[i] = val;
      }
    } else {
      var bytes = internalIsBuffer(val)
        ? val
        : utf8ToBytes(new Buffer(val, encoding).toString());
      var len = bytes.length;
      for (i = 0; i < end - start; ++i) {
        this[i + start] = bytes[i % len];
      }
    }

    return this
  };

  // HELPER FUNCTIONS
  // ================

  var INVALID_BASE64_RE = /[^+\/0-9A-Za-z-_]/g;

  function base64clean (str) {
    // Node strips out invalid characters like \n and \t from the string, base64-js does not
    str = stringtrim(str).replace(INVALID_BASE64_RE, '');
    // Node converts strings with length < 2 to ''
    if (str.length < 2) return ''
    // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not
    while (str.length % 4 !== 0) {
      str = str + '=';
    }
    return str
  }

  function stringtrim (str) {
    if (str.trim) return str.trim()
    return str.replace(/^\s+|\s+$/g, '')
  }

  function toHex (n) {
    if (n < 16) return '0' + n.toString(16)
    return n.toString(16)
  }

  function utf8ToBytes (string, units) {
    units = units || Infinity;
    var codePoint;
    var length = string.length;
    var leadSurrogate = null;
    var bytes = [];

    for (var i = 0; i < length; ++i) {
      codePoint = string.charCodeAt(i);

      // is surrogate component
      if (codePoint > 0xD7FF && codePoint < 0xE000) {
        // last char was a lead
        if (!leadSurrogate) {
          // no lead yet
          if (codePoint > 0xDBFF) {
            // unexpected trail
            if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD);
            continue
          } else if (i + 1 === length) {
            // unpaired lead
            if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD);
            continue
          }

          // valid lead
          leadSurrogate = codePoint;

          continue
        }

        // 2 leads in a row
        if (codePoint < 0xDC00) {
          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD);
          leadSurrogate = codePoint;
          continue
        }

        // valid surrogate pair
        codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000;
      } else if (leadSurrogate) {
        // valid bmp char, but last char was a lead
        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD);
      }

      leadSurrogate = null;

      // encode utf8
      if (codePoint < 0x80) {
        if ((units -= 1) < 0) break
        bytes.push(codePoint);
      } else if (codePoint < 0x800) {
        if ((units -= 2) < 0) break
        bytes.push(
          codePoint >> 0x6 | 0xC0,
          codePoint & 0x3F | 0x80
        );
      } else if (codePoint < 0x10000) {
        if ((units -= 3) < 0) break
        bytes.push(
          codePoint >> 0xC | 0xE0,
          codePoint >> 0x6 & 0x3F | 0x80,
          codePoint & 0x3F | 0x80
        );
      } else if (codePoint < 0x110000) {
        if ((units -= 4) < 0) break
        bytes.push(
          codePoint >> 0x12 | 0xF0,
          codePoint >> 0xC & 0x3F | 0x80,
          codePoint >> 0x6 & 0x3F | 0x80,
          codePoint & 0x3F | 0x80
        );
      } else {
        throw new Error('Invalid code point')
      }
    }

    return bytes
  }

  function asciiToBytes (str) {
    var byteArray = [];
    for (var i = 0; i < str.length; ++i) {
      // Node's code seems to be doing this and not & 0x7F..
      byteArray.push(str.charCodeAt(i) & 0xFF);
    }
    return byteArray
  }

  function utf16leToBytes (str, units) {
    var c, hi, lo;
    var byteArray = [];
    for (var i = 0; i < str.length; ++i) {
      if ((units -= 2) < 0) break

      c = str.charCodeAt(i);
      hi = c >> 8;
      lo = c % 256;
      byteArray.push(lo);
      byteArray.push(hi);
    }

    return byteArray
  }


  function base64ToBytes (str) {
    return toByteArray(base64clean(str))
  }

  function blitBuffer (src, dst, offset, length) {
    for (var i = 0; i < length; ++i) {
      if ((i + offset >= dst.length) || (i >= src.length)) break
      dst[i + offset] = src[i];
    }
    return i
  }

  function isnan (val) {
    return val !== val // eslint-disable-line no-self-compare
  }


  // the following is from is-buffer, also by Feross Aboukhadijeh and with same lisence
  // The _isBuffer check is for Safari 5-7 support, because it's missing
  // Object.prototype.constructor. Remove this eventually
  function isBuffer(obj) {
    return obj != null && (!!obj._isBuffer || isFastBuffer(obj) || isSlowBuffer(obj))
  }

  function isFastBuffer (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' && isFastBuffer(obj.slice(0, 0))
  }

  var browser$2 = true;

  var utils$3 = {};

  let urlAlphabet =
    'useandom-26T198340PX75pxJACKVERYMINDBUSHWOLF_GQZbfghjklqvwyzrict';
  let customAlphabet = (alphabet, defaultSize = 21) => {
    return (size = defaultSize) => {
      let id = '';
      let i = size;
      while (i--) {
        id += alphabet[(Math.random() * alphabet.length) | 0];
      }
      return id
    }
  };
  let nanoid = (size = 21) => {
    let id = '';
    let i = size;
    while (i--) {
      id += urlAlphabet[(Math.random() * 64) | 0];
    }
    return id
  };
  var nonSecure = { nanoid, customAlphabet };

  var he = {exports: {}};

  /*! https://mths.be/he v1.2.0 by @mathias | MIT license */

  (function (module, exports) {
  (function(root) {

  	// Detect free variables `exports`.
  	var freeExports = exports;

  	// Detect free variable `module`.
  	var freeModule = module &&
  		module.exports == freeExports && module;

  	// Detect free variable `global`, from Node.js or Browserified code,
  	// and use it as `root`.
  	var freeGlobal = typeof commonjsGlobal == 'object' && commonjsGlobal;
  	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 = 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','\u2A73':'Esim','\u2A77':'eDDot','\u2A78':'equivDD','\u2A79':'ltcir','\u2A7A':'gtcir','\u2A7B':'ltquest','\u2A7C':'gtquest','\u2A7D':'les','\u2A7D\u0338':'nles','\u2A7E':'ges','\u2A7E\u0338':'nges','\u2A7F':'lesdot','\u2A80':'gesdot','\u2A81':'lesdoto','\u2A82':'gesdoto','\u2A83':'lesdotor','\u2A84':'gesdotol','\u2A85':'lap','\u2A86':'gap','\u2A87':'lne','\u2A88':'gne','\u2A89':'lnap','\u2A8A':'gnap','\u2A8B':'lEg','\u2A8C':'gEl','\u2A8D':'lsime','\u2A8E':'gsime','\u2A8F':'lsimg','\u2A90':'gsiml','\u2A91':'lgE','\u2A92':'glE','\u2A93':'lesges','\u2A94':'gesles','\u2A95':'els','\u2A96':'egs','\u2A97':'elsdot','\u2A98':'egsdot','\u2A99':'el','\u2A9A':'eg','\u2A9D':'siml','\u2A9E':'simg','\u2A9F':'simlE','\u2AA0':'simgE','\u2AA1':'LessLess','\u2AA1\u0338':'NotNestedLessLess','\u2AA2':'GreaterGreater','\u2AA2\u0338':'NotNestedGreaterGreater','\u2AA4':'glj','\u2AA5':'gla','\u2AA6':'ltcc','\u2AA7':'gtcc','\u2AA8':'lescc','\u2AA9':'gescc','\u2AAA':'smt','\u2AAB':'lat','\u2AAC':'smte','\u2AAC\uFE00':'smtes','\u2AAD':'late','\u2AAD\uFE00':'lates','\u2AAE':'bumpE','\u2AAF':'pre','\u2AAF\u0338':'npre','\u2AB0':'sce','\u2AB0\u0338':'nsce','\u2AB3':'prE','\u2AB4':'scE','\u2AB5':'prnE','\u2AB6':'scnE','\u2AB7':'prap','\u2AB8':'scap','\u2AB9':'prnap','\u2ABA':'scnap','\u2ABB':'Pr','\u2ABC':'Sc','\u2ABD':'subdot','\u2ABE':'supdot','\u2ABF':'subplus','\u2AC0':'supplus','\u2AC1':'submult','\u2AC2':'supmult','\u2AC3':'subedot','\u2AC4':'supedot','\u2AC5':'subE','\u2AC5\u0338':'nsubE','\u2AC6':'supE','\u2AC6\u0338':'nsupE','\u2AC7':'subsim','\u2AC8':'supsim','\u2ACB\uFE00':'vsubnE','\u2ACB':'subnE','\u2ACC\uFE00':'vsupnE','\u2ACC':'supnE','\u2ACF':'csub','\u2AD0':'csup','\u2AD1':'csube','\u2AD2':'csupe','\u2AD3':'subsup','\u2AD4':'supsub','\u2AD5':'subsub','\u2AD6':'supsup','\u2AD7':'suphsub','\u2AD8':'supdsub','\u2AD9':'forkv','\u2ADA':'topfork','\u2ADB':'mlcp','\u2AE4':'Dashv','\u2AE6':'Vdashl','\u2AE7':'Barv','\u2AE8':'vBar','\u2AE9':'vBarv','\u2AEB':'Vbar','\u2AEC':'Not','\u2AED':'bNot','\u2AEE':'rnmid','\u2AEF':'cirmid','\u2AF0':'midcir','\u2AF1':'topcir','\u2AF2':'nhpar','\u2AF3':'parsim','\u2AFD':'parsl','\u2AFD\u20E5':'nparsl','\u266D':'flat','\u266E':'natur','\u266F':'sharp','\xA4':'curren','\xA2':'cent','$':'dollar','\xA3':'pound','\xA5':'yen','\u20AC':'euro','\xB9':'sup1','\xBD':'half','\u2153':'frac13','\xBC':'frac14','\u2155':'frac15','\u2159':'frac16','\u215B':'frac18','\xB2':'sup2','\u2154':'frac23','\u2156':'frac25','\xB3':'sup3','\xBE':'frac34','\u2157':'frac35','\u215C':'frac38','\u2158':'frac45','\u215A':'frac56','\u215D':'frac58','\u215E':'frac78','\uD835\uDCB6':'ascr','\uD835\uDD52':'aopf','\uD835\uDD1E':'afr','\uD835\uDD38':'Aopf','\uD835\uDD04':'Afr','\uD835\uDC9C':'Ascr','\xAA':'ordf','\xE1':'aacute','\xC1':'Aacute','\xE0':'agrave','\xC0':'Agrave','\u0103':'abreve','\u0102':'Abreve','\xE2':'acirc','\xC2':'Acirc','\xE5':'aring','\xC5':'angst','\xE4':'auml','\xC4':'Auml','\xE3':'atilde','\xC3':'Atilde','\u0105':'aogon','\u0104':'Aogon','\u0101':'amacr','\u0100':'Amacr','\xE6':'aelig','\xC6':'AElig','\uD835\uDCB7':'bscr','\uD835\uDD53':'bopf','\uD835\uDD1F':'bfr','\uD835\uDD39':'Bopf','\u212C':'Bscr','\uD835\uDD05':'Bfr','\uD835\uDD20':'cfr','\uD835\uDCB8':'cscr','\uD835\uDD54':'copf','\u212D':'Cfr','\uD835\uDC9E':'Cscr','\u2102':'Copf','\u0107':'cacute','\u0106':'Cacute','\u0109':'ccirc','\u0108':'Ccirc','\u010D':'ccaron','\u010C':'Ccaron','\u010B':'cdot','\u010A':'Cdot','\xE7':'ccedil','\xC7':'Ccedil','\u2105':'incare','\uD835\uDD21':'dfr','\u2146':'dd','\uD835\uDD55':'dopf','\uD835\uDCB9':'dscr','\uD835\uDC9F':'Dscr','\uD835\uDD07':'Dfr','\u2145':'DD','\uD835\uDD3B':'Dopf','\u010F':'dcaron','\u010E':'Dcaron','\u0111':'dstrok','\u0110':'Dstrok','\xF0':'eth','\xD0':'ETH','\u2147':'ee','\u212F':'escr','\uD835\uDD22':'efr','\uD835\uDD56':'eopf','\u2130':'Escr','\uD835\uDD08':'Efr','\uD835\uDD3C':'Eopf','\xE9':'eacute','\xC9':'Eacute','\xE8':'egrave','\xC8':'Egrave','\xEA':'ecirc','\xCA':'Ecirc','\u011B':'ecaron','\u011A':'Ecaron','\xEB':'euml','\xCB':'Euml','\u0117':'edot','\u0116':'Edot','\u0119':'eogon','\u0118':'Eogon','\u0113':'emacr','\u0112':'Emacr','\uD835\uDD23':'ffr','\uD835\uDD57':'fopf','\uD835\uDCBB':'fscr','\uD835\uDD09':'Ffr','\uD835\uDD3D':'Fopf','\u2131':'Fscr','\uFB00':'fflig','\uFB03':'ffilig','\uFB04':'ffllig','\uFB01':'filig','fj':'fjlig','\uFB02':'fllig','\u0192':'fnof','\u210A':'gscr','\uD835\uDD58':'gopf','\uD835\uDD24':'gfr','\uD835\uDCA2':'Gscr','\uD835\uDD3E':'Gopf','\uD835\uDD0A':'Gfr','\u01F5':'gacute','\u011F':'gbreve','\u011E':'Gbreve','\u011D':'gcirc','\u011C':'Gcirc','\u0121':'gdot','\u0120':'Gdot','\u0122':'Gcedil','\uD835\uDD25':'hfr','\u210E':'planckh','\uD835\uDCBD':'hscr','\uD835\uDD59':'hopf','\u210B':'Hscr','\u210C':'Hfr','\u210D':'Hopf','\u0125':'hcirc','\u0124':'Hcirc','\u210F':'hbar','\u0127':'hstrok','\u0126':'Hstrok','\uD835\uDD5A':'iopf','\uD835\uDD26':'ifr','\uD835\uDCBE':'iscr','\u2148':'ii','\uD835\uDD40':'Iopf','\u2110':'Iscr','\u2111':'Im','\xED':'iacute','\xCD':'Iacute','\xEC':'igrave','\xCC':'Igrave','\xEE':'icirc','\xCE':'Icirc','\xEF':'iuml','\xCF':'Iuml','\u0129':'itilde','\u0128':'Itilde','\u0130':'Idot','\u012F':'iogon','\u012E':'Iogon','\u012B':'imacr','\u012A':'Imacr','\u0133':'ijlig','\u0132':'IJlig','\u0131':'imath','\uD835\uDCBF':'jscr','\uD835\uDD5B':'jopf','\uD835\uDD27':'jfr','\uD835\uDCA5':'Jscr','\uD835\uDD0D':'Jfr','\uD835\uDD41':'Jopf','\u0135':'jcirc','\u0134':'Jcirc','\u0237':'jmath','\uD835\uDD5C':'kopf','\uD835\uDCC0':'kscr','\uD835\uDD28':'kfr','\uD835\uDCA6':'Kscr','\uD835\uDD42':'Kopf','\uD835\uDD0E':'Kfr','\u0137':'kcedil','\u0136':'Kcedil','\uD835\uDD29':'lfr','\uD835\uDCC1':'lscr','\u2113':'ell','\uD835\uDD5D':'lopf','\u2112':'Lscr','\uD835\uDD0F':'Lfr','\uD835\uDD43':'Lopf','\u013A':'lacute','\u0139':'Lacute','\u013E':'lcaron','\u013D':'Lcaron','\u013C':'lcedil','\u013B':'Lcedil','\u0142':'lstrok','\u0141':'Lstrok','\u0140':'lmidot','\u013F':'Lmidot','\uD835\uDD2A':'mfr','\uD835\uDD5E':'mopf','\uD835\uDCC2':'mscr','\uD835\uDD10':'Mfr','\uD835\uDD44':'Mopf','\u2133':'Mscr','\uD835\uDD2B':'nfr','\uD835\uDD5F':'nopf','\uD835\uDCC3':'nscr','\u2115':'Nopf','\uD835\uDCA9':'Nscr','\uD835\uDD11':'Nfr','\u0144':'nacute','\u0143':'Nacute','\u0148':'ncaron','\u0147':'Ncaron','\xF1':'ntilde','\xD1':'Ntilde','\u0146':'ncedil','\u0145':'Ncedil','\u2116':'numero','\u014B':'eng','\u014A':'ENG','\uD835\uDD60':'oopf','\uD835\uDD2C':'ofr','\u2134':'oscr','\uD835\uDCAA':'Oscr','\uD835\uDD12':'Ofr','\uD835\uDD46':'Oopf','\xBA':'ordm','\xF3':'oacute','\xD3':'Oacute','\xF2':'ograve','\xD2':'Ograve','\xF4':'ocirc','\xD4':'Ocirc','\xF6':'ouml','\xD6':'Ouml','\u0151':'odblac','\u0150':'Odblac','\xF5':'otilde','\xD5':'Otilde','\xF8':'oslash','\xD8':'Oslash','\u014D':'omacr','\u014C':'Omacr','\u0153':'oelig','\u0152':'OElig','\uD835\uDD2D':'pfr','\uD835\uDCC5':'pscr','\uD835\uDD61':'popf','\u2119':'Popf','\uD835\uDD13':'Pfr','\uD835\uDCAB':'Pscr','\uD835\uDD62':'qopf','\uD835\uDD2E':'qfr','\uD835\uDCC6':'qscr','\uD835\uDCAC':'Qscr','\uD835\uDD14':'Qfr','\u211A':'Qopf','\u0138':'kgreen','\uD835\uDD2F':'rfr','\uD835\uDD63':'ropf','\uD835\uDCC7':'rscr','\u211B':'Rscr','\u211C':'Re','\u211D':'Ropf','\u0155':'racute','\u0154':'Racute','\u0159':'rcaron','\u0158':'Rcaron','\u0157':'rcedil','\u0156':'Rcedil','\uD835\uDD64':'sopf','\uD835\uDCC8':'sscr','\uD835\uDD30':'sfr','\uD835\uDD4A':'Sopf','\uD835\uDD16':'Sfr','\uD835\uDCAE':'Sscr','\u24C8':'oS','\u015B':'sacute','\u015A':'Sacute','\u015D':'scirc','\u015C':'Scirc','\u0161':'scaron','\u0160':'Scaron','\u015F':'scedil','\u015E':'Scedil','\xDF':'szlig','\uD835\uDD31':'tfr','\uD835\uDCC9':'tscr','\uD835\uDD65':'topf','\uD835\uDCAF':'Tscr','\uD835\uDD17':'Tfr','\uD835\uDD4B':'Topf','\u0165':'tcaron','\u0164':'Tcaron','\u0163':'tcedil','\u0162':'Tcedil','\u2122':'trade','\u0167':'tstrok','\u0166':'Tstrok','\uD835\uDCCA':'uscr','\uD835\uDD66':'uopf','\uD835\uDD32':'ufr','\uD835\uDD4C':'Uopf','\uD835\uDD18':'Ufr','\uD835\uDCB0':'Uscr','\xFA':'uacute','\xDA':'Uacute','\xF9':'ugrave','\xD9':'Ugrave','\u016D':'ubreve','\u016C':'Ubreve','\xFB':'ucirc','\xDB':'Ucirc','\u016F':'uring','\u016E':'Uring','\xFC':'uuml','\xDC':'Uuml','\u0171':'udblac','\u0170':'Udblac','\u0169':'utilde','\u0168':'Utilde','\u0173':'uogon','\u0172':'Uogon','\u016B':'umacr','\u016A':'Umacr','\uD835\uDD33':'vfr','\uD835\uDD67':'vopf','\uD835\uDCCB':'vscr','\uD835\uDD19':'Vfr','\uD835\uDD4D':'Vopf','\uD835\uDCB1':'Vscr','\uD835\uDD68':'wopf','\uD835\uDCCC':'wscr','\uD835\uDD34':'wfr','\uD835\uDCB2':'Wscr','\uD835\uDD4E':'Wopf','\uD835\uDD1A':'Wfr','\u0175':'wcirc','\u0174':'Wcirc','\uD835\uDD35':'xfr','\uD835\uDCCD':'xscr','\uD835\uDD69':'xopf','\uD835\uDD4F':'Xopf','\uD835\uDD1B':'Xfr','\uD835\uDCB3':'Xscr','\uD835\uDD36':'yfr','\uD835\uDCCE':'yscr','\uD835\uDD6A':'yopf','\uD835\uDCB4':'Yscr','\uD835\uDD1C':'Yfr','\uD835\uDD50':'Yopf','\xFD':'yacute','\xDD':'Yacute','\u0177':'ycirc','\u0176':'Ycirc','\xFF':'yuml','\u0178':'Yuml','\uD835\uDCCF':'zscr','\uD835\uDD37':'zfr','\uD835\uDD6B':'zopf','\u2128':'Zfr','\u2124':'Zopf','\uD835\uDCB5':'Zscr','\u017A':'zacute','\u0179':'Zacute','\u017E':'zcaron','\u017D':'Zcaron','\u017C':'zdot','\u017B':'Zdot','\u01B5':'imped','\xFE':'thorn','\xDE':'THORN','\u0149':'napos','\u03B1':'alpha','\u0391':'Alpha','\u03B2':'beta','\u0392':'Beta','\u03B3':'gamma','\u0393':'Gamma','\u03B4':'delta','\u0394':'Delta','\u03B5':'epsi','\u03F5':'epsiv','\u0395':'Epsilon','\u03DD':'gammad','\u03DC':'Gammad','\u03B6':'zeta','\u0396':'Zeta','\u03B7':'eta','\u0397':'Eta','\u03B8':'theta','\u03D1':'thetav','\u0398':'Theta','\u03B9':'iota','\u0399':'Iota','\u03BA':'kappa','\u03F0':'kappav','\u039A':'Kappa','\u03BB':'lambda','\u039B':'Lambda','\u03BC':'mu','\xB5':'micro','\u039C':'Mu','\u03BD':'nu','\u039D':'Nu','\u03BE':'xi','\u039E':'Xi','\u03BF':'omicron','\u039F':'Omicron','\u03C0':'pi','\u03D6':'piv','\u03A0':'Pi','\u03C1':'rho','\u03F1':'rhov','\u03A1':'Rho','\u03C3':'sigma','\u03A3':'Sigma','\u03C2':'sigmaf','\u03C4':'tau','\u03A4':'Tau','\u03C5':'upsi','\u03A5':'Upsilon','\u03D2':'Upsi','\u03C6':'phi','\u03D5':'phiv','\u03A6':'Phi','\u03C7':'chi','\u03A7':'Chi','\u03C8':'psi','\u03A8':'Psi','\u03C9':'omega','\u03A9':'ohm','\u0430':'acy','\u0410':'Acy','\u0431':'bcy','\u0411':'Bcy','\u0432':'vcy','\u0412':'Vcy','\u0433':'gcy','\u0413':'Gcy','\u0453':'gjcy','\u0403':'GJcy','\u0434':'dcy','\u0414':'Dcy','\u0452':'djcy','\u0402':'DJcy','\u0435':'iecy','\u0415':'IEcy','\u0451':'iocy','\u0401':'IOcy','\u0454':'jukcy','\u0404':'Jukcy','\u0436':'zhcy','\u0416':'ZHcy','\u0437':'zcy','\u0417':'Zcy','\u0455':'dscy','\u0405':'DScy','\u0438':'icy','\u0418':'Icy','\u0456':'iukcy','\u0406':'Iukcy','\u0457':'yicy','\u0407':'YIcy','\u0439':'jcy','\u0419':'Jcy','\u0458':'jsercy','\u0408':'Jsercy','\u043A':'kcy','\u041A':'Kcy','\u045C':'kjcy','\u040C':'KJcy','\u043B':'lcy','\u041B':'Lcy','\u0459':'ljcy','\u0409':'LJcy','\u043C':'mcy','\u041C':'Mcy','\u043D':'ncy','\u041D':'Ncy','\u045A':'njcy','\u040A':'NJcy','\u043E':'ocy','\u041E':'Ocy','\u043F':'pcy','\u041F':'Pcy','\u0440':'rcy','\u0420':'Rcy','\u0441':'scy','\u0421':'Scy','\u0442':'tcy','\u0422':'Tcy','\u045B':'tshcy','\u040B':'TSHcy','\u0443':'ucy','\u0423':'Ucy','\u045E':'ubrcy','\u040E':'Ubrcy','\u0444':'fcy','\u0424':'Fcy','\u0445':'khcy','\u0425':'KHcy','\u0446':'tscy','\u0426':'TScy','\u0447':'chcy','\u0427':'CHcy','\u045F':'dzcy','\u040F':'DZcy','\u0448':'shcy','\u0428':'SHcy','\u0449':'shchcy','\u0429':'SHCHcy','\u044A':'hardcy','\u042A':'HARDcy','\u044B':'ycy','\u042B':'Ycy','\u044C':'softcy','\u042C':'SOFTcy','\u044D':'ecy','\u042D':'Ecy','\u044E':'yucy','\u042E':'YUcy','\u044F':'yacy','\u042F':'YAcy','\u2135':'aleph','\u2136':'beth','\u2137':'gimel','\u2138':'daleth'};

  	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 = 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|Fscr|gdot|gsim|Gscr|gscr|Gopf|gopf|gneq|Gdot|tosa|gnap|Topf|topf|geqq|toea|GJcy|gjcy|tint|gesl|mid|Sfr|ggg|top|ges|gla|glE|glj|geq|gne|gEl|gel|gnE|Gcy|gcy|gap|Tfr|tfr|Tcy|tcy|Hat|Tau|Ffr|tau|Tab|hfr|Hfr|ffr|Fcy|fcy|icy|Icy|iff|ETH|eth|ifr|Ifr|Eta|eta|int|Int|Sup|sup|ucy|Ucy|Sum|sum|jcy|ENG|ufr|Ufr|eng|Jcy|jfr|els|ell|egs|Efr|efr|Jfr|uml|kcy|Kcy|Ecy|ecy|kfr|Kfr|lap|Sub|sub|lat|lcy|Lcy|leg|Dot|dot|lEg|leq|les|squ|div|die|lfr|Lfr|lgE|Dfr|dfr|Del|deg|Dcy|dcy|lne|lnE|sol|loz|smt|Cup|lrm|cup|lsh|Lsh|sim|shy|map|Map|mcy|Mcy|mfr|Mfr|mho|gfr|Gfr|sfr|cir|Chi|chi|nap|Cfr|vcy|Vcy|cfr|Scy|scy|ncy|Ncy|vee|Vee|Cap|cap|nfr|scE|sce|Nfr|nge|ngE|nGg|vfr|Vfr|ngt|bot|nGt|nis|niv|Rsh|rsh|nle|nlE|bne|Bfr|bfr|nLl|nlt|nLt|Bcy|bcy|not|Not|rlm|wfr|Wfr|npr|nsc|num|ocy|ast|Ocy|ofr|xfr|Xfr|Ofr|ogt|ohm|apE|olt|Rho|ape|rho|Rfr|rfr|ord|REG|ang|reg|orv|And|and|AMP|Rcy|amp|Afr|ycy|Ycy|yen|yfr|Yfr|rcy|par|pcy|Pcy|pfr|Pfr|phi|Phi|afr|Acy|acy|zcy|Zcy|piv|acE|acd|zfr|Zfr|pre|prE|psi|Psi|qfr|Qfr|zwj|Or|ge|Gg|gt|gg|el|oS|lt|Lt|LT|Re|lg|gl|eg|ne|Im|it|le|DD|wp|wr|nu|Nu|dd|lE|Sc|sc|pi|Pi|ee|af|ll|Ll|rx|gE|xi|pm|Xi|ic|pr|Pr|in|ni|mp|mu|ac|Mu|or|ap|Gt|GT|ii);|&(Aacute|Agrave|Atilde|Ccedil|Eacute|Egrave|Iacute|Igrave|Ntilde|Oacute|Ograve|Oslash|Otilde|Uacute|Ugrave|Yacute|aacute|agrave|atilde|brvbar|ccedil|curren|divide|eacute|egrave|frac12|frac14|frac34|iacute|igrave|iquest|middot|ntilde|oacute|ograve|oslash|otilde|plusmn|uacute|ugrave|yacute|AElig|Acirc|Aring|Ecirc|Icirc|Ocirc|THORN|Ucirc|acirc|acute|aelig|aring|cedil|ecirc|icirc|iexcl|laquo|micro|ocirc|pound|raquo|szlig|thorn|times|ucirc|Auml|COPY|Euml|Iuml|Ouml|QUOT|Uuml|auml|cent|copy|euml|iuml|macr|nbsp|ordf|ordm|ouml|para|quot|sect|sup1|sup2|sup3|uuml|yuml|AMP|ETH|REG|amp|deg|eth|not|reg|shy|uml|yen|GT|LT|gt|lt)(?!;)([=a-zA-Z0-9]?)|&#([0-9]+)(;?)|&#[xX]([a-fA-F0-9]+)(;?)|&([0-9a-zA-Z]+)/g;
  	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':'\u2230','ccups':'\u2A4C','ccupssm':'\u2A50','cdot':'\u010B','Cdot':'\u010A','cedil':'\xB8','Cedilla':'\xB8','cemptyv':'\u29B2','cent':'\xA2','centerdot':'\xB7','CenterDot':'\xB7','cfr':'\uD835\uDD20','Cfr':'\u212D','chcy':'\u0447','CHcy':'\u0427','check':'\u2713','checkmark':'\u2713','chi':'\u03C7','Chi':'\u03A7','cir':'\u25CB','circ':'\u02C6','circeq':'\u2257','circlearrowleft':'\u21BA','circlearrowright':'\u21BB','circledast':'\u229B','circledcirc':'\u229A','circleddash':'\u229D','CircleDot':'\u2299','circledR':'\xAE','circledS':'\u24C8','CircleMinus':'\u2296','CirclePlus':'\u2295','CircleTimes':'\u2297','cire':'\u2257','cirE':'\u29C3','cirfnint':'\u2A10','cirmid':'\u2AEF','cirscir':'\u29C2','ClockwiseContourIntegral':'\u2232','CloseCurlyDoubleQuote':'\u201D','CloseCurlyQuote':'\u2019','clubs':'\u2663','clubsuit':'\u2663','colon':':','Colon':'\u2237','colone':'\u2254','Colone':'\u2A74','coloneq':'\u2254','comma':',','commat':'@','comp':'\u2201','compfn':'\u2218','complement':'\u2201','complexes':'\u2102','cong':'\u2245','congdot':'\u2A6D','Congruent':'\u2261','conint':'\u222E','Conint':'\u222F','ContourIntegral':'\u222E','copf':'\uD835\uDD54','Copf':'\u2102','coprod':'\u2210','Coproduct':'\u2210','copy':'\xA9','COPY':'\xA9','copysr':'\u2117','CounterClockwiseContourIntegral':'\u2233','crarr':'\u21B5','cross':'\u2717','Cross':'\u2A2F','cscr':'\uD835\uDCB8','Cscr':'\uD835\uDC9E','csub':'\u2ACF','csube':'\u2AD1','csup':'\u2AD0','csupe':'\u2AD2','ctdot':'\u22EF','cudarrl':'\u2938','cudarrr':'\u2935','cuepr':'\u22DE','cuesc':'\u22DF','cularr':'\u21B6','cularrp':'\u293D','cup':'\u222A','Cup':'\u22D3','cupbrcap':'\u2A48','cupcap':'\u2A46','CupCap':'\u224D','cupcup':'\u2A4A','cupdot':'\u228D','cupor':'\u2A45','cups':'\u222A\uFE00','curarr':'\u21B7','curarrm':'\u293C','curlyeqprec':'\u22DE','curlyeqsucc':'\u22DF','curlyvee':'\u22CE','curlywedge':'\u22CF','curren':'\xA4','curvearrowleft':'\u21B6','curvearrowright':'\u21B7','cuvee':'\u22CE','cuwed':'\u22CF','cwconint':'\u2232','cwint':'\u2231','cylcty':'\u232D','dagger':'\u2020','Dagger':'\u2021','daleth':'\u2138','darr':'\u2193','dArr':'\u21D3','Darr':'\u21A1','dash':'\u2010','dashv':'\u22A3','Dashv':'\u2AE4','dbkarow':'\u290F','dblac':'\u02DD','dcaron':'\u010F','Dcaron':'\u010E','dcy':'\u0434','Dcy':'\u0414','dd':'\u2146','DD':'\u2145','ddagger':'\u2021','ddarr':'\u21CA','DDotrahd':'\u2911','ddotseq':'\u2A77','deg':'\xB0','Del':'\u2207','delta':'\u03B4','Delta':'\u0394','demptyv':'\u29B1','dfisht':'\u297F','dfr':'\uD835\uDD21','Dfr':'\uD835\uDD07','dHar':'\u2965','dharl':'\u21C3','dharr':'\u21C2','DiacriticalAcute':'\xB4','DiacriticalDot':'\u02D9','DiacriticalDoubleAcute':'\u02DD','DiacriticalGrave':'`','DiacriticalTilde':'\u02DC','diam':'\u22C4','diamond':'\u22C4','Diamond':'\u22C4','diamondsuit':'\u2666','diams':'\u2666','die':'\xA8','DifferentialD':'\u2146','digamma':'\u03DD','disin':'\u22F2','div':'\xF7','divide':'\xF7','divideontimes':'\u22C7','divonx':'\u22C7','djcy':'\u0452','DJcy':'\u0402','dlcorn':'\u231E','dlcrop':'\u230D','dollar':'$','dopf':'\uD835\uDD55','Dopf':'\uD835\uDD3B','dot':'\u02D9','Dot':'\xA8','DotDot':'\u20DC','doteq':'\u2250','doteqdot':'\u2251','DotEqual':'\u2250','dotminus':'\u2238','dotplus':'\u2214','dotsquare':'\u22A1','doublebarwedge':'\u2306','DoubleContourIntegral':'\u222F','DoubleDot':'\xA8','DoubleDownArrow':'\u21D3','DoubleLeftArrow':'\u21D0','DoubleLeftRightArrow':'\u21D4','DoubleLeftTee':'\u2AE4','DoubleLongLeftArrow':'\u27F8','DoubleLongLeftRightArrow':'\u27FA','DoubleLongRightArrow':'\u27F9','DoubleRightArrow':'\u21D2','DoubleRightTee':'\u22A8','DoubleUpArrow':'\u21D1','DoubleUpDownArrow':'\u21D5','DoubleVerticalBar':'\u2225','downarrow':'\u2193','Downarrow':'\u21D3','DownArrow':'\u2193','DownArrowBar':'\u2913','DownArrowUpArrow':'\u21F5','DownBreve':'\u0311','downdownarrows':'\u21CA','downharpoonleft':'\u21C3','downharpoonright':'\u21C2','DownLeftRightVector':'\u2950','DownLeftTeeVector':'\u295E','DownLeftVector':'\u21BD','DownLeftVectorBar':'\u2956','DownRightTeeVector':'\u295F','DownRightVector':'\u21C1','DownRightVectorBar':'\u2957','DownTee':'\u22A4','DownTeeArrow':'\u21A7','drbkarow':'\u2910','drcorn':'\u231F','drcrop':'\u230C','dscr':'\uD835\uDCB9','Dscr':'\uD835\uDC9F','dscy':'\u0455','DScy':'\u0405','dsol':'\u29F6','dstrok':'\u0111','Dstrok':'\u0110','dtdot':'\u22F1','dtri':'\u25BF','dtrif':'\u25BE','duarr':'\u21F5','duhar':'\u296F','dwangle':'\u29A6','dzcy':'\u045F','DZcy':'\u040F','dzigrarr':'\u27FF','eacute':'\xE9','Eacute':'\xC9','easter':'\u2A6E','ecaron':'\u011B','Ecaron':'\u011A','ecir':'\u2256','ecirc':'\xEA','Ecirc':'\xCA','ecolon':'\u2255','ecy':'\u044D','Ecy':'\u042D','eDDot':'\u2A77','edot':'\u0117','eDot':'\u2251','Edot':'\u0116','ee':'\u2147','efDot':'\u2252','efr':'\uD835\uDD22','Efr':'\uD835\uDD08','eg':'\u2A9A','egrave':'\xE8','Egrave':'\xC8','egs':'\u2A96','egsdot':'\u2A98','el':'\u2A99','Element':'\u2208','elinters':'\u23E7','ell':'\u2113','els':'\u2A95','elsdot':'\u2A97','emacr':'\u0113','Emacr':'\u0112','empty':'\u2205','emptyset':'\u2205','EmptySmallSquare':'\u25FB','emptyv':'\u2205','EmptyVerySmallSquare':'\u25AB','emsp':'\u2003','emsp13':'\u2004','emsp14':'\u2005','eng':'\u014B','ENG':'\u014A','ensp':'\u2002','eogon':'\u0119','Eogon':'\u0118','eopf':'\uD835\uDD56','Eopf':'\uD835\uDD3C','epar':'\u22D5','eparsl':'\u29E3','eplus':'\u2A71','epsi':'\u03B5','epsilon':'\u03B5','Epsilon':'\u0395','epsiv':'\u03F5','eqcirc':'\u2256','eqcolon':'\u2255','eqsim':'\u2242','eqslantgtr':'\u2A96','eqslantless':'\u2A95','Equal':'\u2A75','equals':'=','EqualTilde':'\u2242','equest':'\u225F','Equilibrium':'\u21CC','equiv':'\u2261','equivDD':'\u2A78','eqvparsl':'\u29E5','erarr':'\u2971','erDot':'\u2253','escr':'\u212F','Escr':'\u2130','esdot':'\u2250','esim':'\u2242','Esim':'\u2A73','eta':'\u03B7','Eta':'\u0397','eth':'\xF0','ETH':'\xD0','euml':'\xEB','Euml':'\xCB','euro':'\u20AC','excl':'!','exist':'\u2203','Exists':'\u2203','expectation':'\u2130','exponentiale':'\u2147','ExponentialE':'\u2147','fallingdotseq':'\u2252','fcy':'\u0444','Fcy':'\u0424','female':'\u2640','ffilig':'\uFB03','fflig':'\uFB00','ffllig':'\uFB04','ffr':'\uD835\uDD23','Ffr':'\uD835\uDD09','filig':'\uFB01','FilledSmallSquare':'\u25FC','FilledVerySmallSquare':'\u25AA','fjlig':'fj','flat':'\u266D','fllig':'\uFB02','fltns':'\u25B1','fnof':'\u0192','fopf':'\uD835\uDD57','Fopf':'\uD835\uDD3D','forall':'\u2200','ForAll':'\u2200','fork':'\u22D4','forkv':'\u2AD9','Fouriertrf':'\u2131','fpartint':'\u2A0D','frac12':'\xBD','frac13':'\u2153','frac14':'\xBC','frac15':'\u2155','frac16':'\u2159','frac18':'\u215B','frac23':'\u2154','frac25':'\u2156','frac34':'\xBE','frac35':'\u2157','frac38':'\u215C','frac45':'\u2158','frac56':'\u215A','frac58':'\u215D','frac78':'\u215E','frasl':'\u2044','frown':'\u2322','fscr':'\uD835\uDCBB','Fscr':'\u2131','gacute':'\u01F5','gamma':'\u03B3','Gamma':'\u0393','gammad':'\u03DD','Gammad':'\u03DC','gap':'\u2A86','gbreve':'\u011F','Gbreve':'\u011E','Gcedil':'\u0122','gcirc':'\u011D','Gcirc':'\u011C','gcy':'\u0433','Gcy':'\u0413','gdot':'\u0121','Gdot':'\u0120','ge':'\u2265','gE':'\u2267','gel':'\u22DB','gEl':'\u2A8C','geq':'\u2265','geqq':'\u2267','geqslant':'\u2A7E','ges':'\u2A7E','gescc':'\u2AA9','gesdot':'\u2A80','gesdoto':'\u2A82','gesdotol':'\u2A84','gesl':'\u22DB\uFE00','gesles':'\u2A94','gfr':'\uD835\uDD24','Gfr':'\uD835\uDD0A','gg':'\u226B','Gg':'\u22D9','ggg':'\u22D9','gimel':'\u2137','gjcy':'\u0453','GJcy':'\u0403','gl':'\u2277','gla':'\u2AA5','glE':'\u2A92','glj':'\u2AA4','gnap':'\u2A8A','gnapprox':'\u2A8A','gne':'\u2A88','gnE':'\u2269','gneq':'\u2A88','gneqq':'\u2269','gnsim':'\u22E7','gopf':'\uD835\uDD58','Gopf':'\uD835\uDD3E','grave':'`','GreaterEqual':'\u2265','GreaterEqualLess':'\u22DB','GreaterFullEqual':'\u2267','GreaterGreater':'\u2AA2','GreaterLess':'\u2277','GreaterSlantEqual':'\u2A7E','GreaterTilde':'\u2273','gscr':'\u210A','Gscr':'\uD835\uDCA2','gsim':'\u2273','gsime':'\u2A8E','gsiml':'\u2A90','gt':'>','Gt':'\u226B','GT':'>','gtcc':'\u2AA7','gtcir':'\u2A7A','gtdot':'\u22D7','gtlPar':'\u2995','gtquest':'\u2A7C','gtrapprox':'\u2A86','gtrarr':'\u2978','gtrdot':'\u22D7','gtreqless':'\u22DB','gtreqqless':'\u2A8C','gtrless':'\u2277','gtrsim':'\u2273','gvertneqq':'\u2269\uFE00','gvnE':'\u2269\uFE00','Hacek':'\u02C7','hairsp':'\u200A','half':'\xBD','hamilt':'\u210B','hardcy':'\u044A','HARDcy':'\u042A','harr':'\u2194','hArr':'\u21D4','harrcir':'\u2948','harrw':'\u21AD','Hat':'^','hbar':'\u210F','hcirc':'\u0125','Hcirc':'\u0124','hearts':'\u2665','heartsuit':'\u2665','hellip':'\u2026','hercon':'\u22B9','hfr':'\uD835\uDD25','Hfr':'\u210C','HilbertSpace':'\u210B','hksearow':'\u2925','hkswarow':'\u2926','hoarr':'\u21FF','homtht':'\u223B','hookleftarrow':'\u21A9','hookrightarrow':'\u21AA','hopf':'\uD835\uDD59','Hopf':'\u210D','horbar':'\u2015','HorizontalLine':'\u2500','hscr':'\uD835\uDCBD','Hscr':'\u210B','hslash':'\u210F','hstrok':'\u0127','Hstrok':'\u0126','HumpDownHump':'\u224E','HumpEqual':'\u224F','hybull':'\u2043','hyphen':'\u2010','iacute':'\xED','Iacute':'\xCD','ic':'\u2063','icirc':'\xEE','Icirc':'\xCE','icy':'\u0438','Icy':'\u0418','Idot':'\u0130','iecy':'\u0435','IEcy':'\u0415','iexcl':'\xA1','iff':'\u21D4','ifr':'\uD835\uDD26','Ifr':'\u2111','igrave':'\xEC','Igrave':'\xCC','ii':'\u2148','iiiint':'\u2A0C','iiint':'\u222D','iinfin':'\u29DC','iiota':'\u2129','ijlig':'\u0133','IJlig':'\u0132','Im':'\u2111','imacr':'\u012B','Imacr':'\u012A','image':'\u2111','ImaginaryI':'\u2148','imagline':'\u2110','imagpart':'\u2111','imath':'\u0131','imof':'\u22B7','imped':'\u01B5','Implies':'\u21D2','in':'\u2208','incare':'\u2105','infin':'\u221E','infintie':'\u29DD','inodot':'\u0131','int':'\u222B','Int':'\u222C','intcal':'\u22BA','integers':'\u2124','Integral':'\u222B','intercal':'\u22BA','Intersection':'\u22C2','intlarhk':'\u2A17','intprod':'\u2A3C','InvisibleComma':'\u2063','InvisibleTimes':'\u2062','iocy':'\u0451','IOcy':'\u0401','iogon':'\u012F','Iogon':'\u012E','iopf':'\uD835\uDD5A','Iopf':'\uD835\uDD40','iota':'\u03B9','Iota':'\u0399','iprod':'\u2A3C','iquest':'\xBF','iscr':'\uD835\uDCBE','Iscr':'\u2110','isin':'\u2208','isindot':'\u22F5','isinE':'\u22F9','isins':'\u22F4','isinsv':'\u22F3','isinv':'\u2208','it':'\u2062','itilde':'\u0129','Itilde':'\u0128','iukcy':'\u0456','Iukcy':'\u0406','iuml':'\xEF','Iuml':'\xCF','jcirc':'\u0135','Jcirc':'\u0134','jcy':'\u0439','Jcy':'\u0419','jfr':'\uD835\uDD27','Jfr':'\uD835\uDD0D','jmath':'\u0237','jopf':'\uD835\uDD5B','Jopf':'\uD835\uDD41','jscr':'\uD835\uDCBF','Jscr':'\uD835\uDCA5','jsercy':'\u0458','Jsercy':'\u0408','jukcy':'\u0454','Jukcy':'\u0404','kappa':'\u03BA','Kappa':'\u039A','kappav':'\u03F0','kcedil':'\u0137','Kcedil':'\u0136','kcy':'\u043A','Kcy':'\u041A','kfr':'\uD835\uDD28','Kfr':'\uD835\uDD0E','kgreen':'\u0138','khcy':'\u0445','KHcy':'\u0425','kjcy':'\u045C','KJcy':'\u040C','kopf':'\uD835\uDD5C','Kopf':'\uD835\uDD42','kscr':'\uD835\uDCC0','Kscr':'\uD835\uDCA6','lAarr':'\u21DA','lacute':'\u013A','Lacute':'\u0139','laemptyv':'\u29B4','lagran':'\u2112','lambda':'\u03BB','Lambda':'\u039B','lang':'\u27E8','Lang':'\u27EA','langd':'\u2991','langle':'\u27E8','lap':'\u2A85','Laplacetrf':'\u2112','laquo':'\xAB','larr':'\u2190','lArr':'\u21D0','Larr':'\u219E','larrb':'\u21E4','larrbfs':'\u291F','larrfs':'\u291D','larrhk':'\u21A9','larrlp':'\u21AB','larrpl':'\u2939','larrsim':'\u2973','larrtl':'\u21A2','lat':'\u2AAB','latail':'\u2919','lAtail':'\u291B','late':'\u2AAD','lates':'\u2AAD\uFE00','lbarr':'\u290C','lBarr':'\u290E','lbbrk':'\u2772','lbrace':'{','lbrack':'[','lbrke':'\u298B','lbrksld':'\u298F','lbrkslu':'\u298D','lcaron':'\u013E','Lcaron':'\u013D','lcedil':'\u013C','Lcedil':'\u013B','lceil':'\u2308','lcub':'{','lcy':'\u043B','Lcy':'\u041B','ldca':'\u2936','ldquo':'\u201C','ldquor':'\u201E','ldrdhar':'\u2967','ldrushar':'\u294B','ldsh':'\u21B2','le':'\u2264','lE':'\u2266','LeftAngleBracket':'\u27E8','leftarrow':'\u2190','Leftarrow':'\u21D0','LeftArrow':'\u2190','LeftArrowBar':'\u21E4','LeftArrowRightArrow':'\u21C6','leftarrowtail':'\u21A2','LeftCeiling':'\u2308','LeftDoubleBracket':'\u27E6','LeftDownTeeVector':'\u2961','LeftDownVector':'\u21C3','LeftDownVectorBar':'\u2959','LeftFloor':'\u230A','leftharpoondown':'\u21BD','leftharpoonup':'\u21BC','leftleftarrows':'\u21C7','leftrightarrow':'\u2194','Leftrightarrow':'\u21D4','LeftRightArrow':'\u2194','leftrightarrows':'\u21C6','leftrightharpoons':'\u21CB','leftrightsquigarrow':'\u21AD','LeftRightVector':'\u294E','LeftTee':'\u22A3','LeftTeeArrow':'\u21A4','LeftTeeVector':'\u295A','leftthreetimes':'\u22CB','LeftTriangle':'\u22B2','LeftTriangleBar':'\u29CF','LeftTriangleEqual':'\u22B4','LeftUpDownVector':'\u2951','LeftUpTeeVector':'\u2960','LeftUpVector':'\u21BF','LeftUpVectorBar':'\u2958','LeftVector':'\u21BC','LeftVectorBar':'\u2952','leg':'\u22DA','lEg':'\u2A8B','leq':'\u2264','leqq':'\u2266','leqslant':'\u2A7D','les':'\u2A7D','lescc':'\u2AA8','lesdot':'\u2A7F','lesdoto':'\u2A81','lesdotor':'\u2A83','lesg':'\u22DA\uFE00','lesges':'\u2A93','lessapprox':'\u2A85','lessdot':'\u22D6','lesseqgtr':'\u22DA','lesseqqgtr':'\u2A8B','LessEqualGreater':'\u22DA','LessFullEqual':'\u2266','LessGreater':'\u2276','lessgtr':'\u2276','LessLess':'\u2AA1','lesssim':'\u2272','LessSlantEqual':'\u2A7D','LessTilde':'\u2272','lfisht':'\u297C','lfloor':'\u230A','lfr':'\uD835\uDD29','Lfr':'\uD835\uDD0F','lg':'\u2276','lgE':'\u2A91','lHar':'\u2962','lhard':'\u21BD','lharu':'\u21BC','lharul':'\u296A','lhblk':'\u2584','ljcy':'\u0459','LJcy':'\u0409','ll':'\u226A','Ll':'\u22D8','llarr':'\u21C7','llcorner':'\u231E','Lleftarrow':'\u21DA','llhard':'\u296B','lltri':'\u25FA','lmidot':'\u0140','Lmidot':'\u013F','lmoust':'\u23B0','lmoustache':'\u23B0','lnap':'\u2A89','lnapprox':'\u2A89','lne':'\u2A87','lnE':'\u2268','lneq':'\u2A87','lneqq':'\u2268','lnsim':'\u22E6','loang':'\u27EC','loarr':'\u21FD','lobrk':'\u27E6','longleftarrow':'\u27F5','Longleftarrow':'\u27F8','LongLeftArrow':'\u27F5','longleftrightarrow':'\u27F7','Longleftrightarrow':'\u27FA','LongLeftRightArrow':'\u27F7','longmapsto':'\u27FC','longrightarrow':'\u27F6','Longrightarrow':'\u27F9','LongRightArrow':'\u27F6','looparrowleft':'\u21AB','looparrowright':'\u21AC','lopar':'\u2985','lopf':'\uD835\uDD5D','Lopf':'\uD835\uDD43','loplus':'\u2A2D','lotimes':'\u2A34','lowast':'\u2217','lowbar':'_','LowerLeftArrow':'\u2199','LowerRightArrow':'\u2198','loz':'\u25CA','lozenge':'\u25CA','lozf':'\u29EB','lpar':'(','lparlt':'\u2993','lrarr':'\u21C6','lrcorner':'\u231F','lrhar':'\u21CB','lrhard':'\u296D','lrm':'\u200E','lrtri':'\u22BF','lsaquo':'\u2039','lscr':'\uD835\uDCC1','Lscr':'\u2112','lsh':'\u21B0','Lsh':'\u21B0','lsim':'\u2272','lsime':'\u2A8D','lsimg':'\u2A8F','lsqb':'[','lsquo':'\u2018','lsquor':'\u201A','lstrok':'\u0142','Lstrok':'\u0141','lt':'<','Lt':'\u226A','LT':'<','ltcc':'\u2AA6','ltcir':'\u2A79','ltdot':'\u22D6','lthree':'\u22CB','ltimes':'\u22C9','ltlarr':'\u2976','ltquest':'\u2A7B','ltri':'\u25C3','ltrie':'\u22B4','ltrif':'\u25C2','ltrPar':'\u2996','lurdshar':'\u294A','luruhar':'\u2966','lvertneqq':'\u2268\uFE00','lvnE':'\u2268\uFE00','macr':'\xAF','male':'\u2642','malt':'\u2720','maltese':'\u2720','map':'\u21A6','Map':'\u2905','mapsto':'\u21A6','mapstodown':'\u21A7','mapstoleft':'\u21A4','mapstoup':'\u21A5','marker':'\u25AE','mcomma':'\u2A29','mcy':'\u043C','Mcy':'\u041C','mdash':'\u2014','mDDot':'\u223A','measuredangle':'\u2221','MediumSpace':'\u205F','Mellintrf':'\u2133','mfr':'\uD835\uDD2A','Mfr':'\uD835\uDD10','mho':'\u2127','micro':'\xB5','mid':'\u2223','midast':'*','midcir':'\u2AF0','middot':'\xB7','minus':'\u2212','minusb':'\u229F','minusd':'\u2238','minusdu':'\u2A2A','MinusPlus':'\u2213','mlcp':'\u2ADB','mldr':'\u2026','mnplus':'\u2213','models':'\u22A7','mopf':'\uD835\uDD5E','Mopf':'\uD835\uDD44','mp':'\u2213','mscr':'\uD835\uDCC2','Mscr':'\u2133','mstpos':'\u223E','mu':'\u03BC','Mu':'\u039C','multimap':'\u22B8','mumap':'\u22B8','nabla':'\u2207','nacute':'\u0144','Nacute':'\u0143','nang':'\u2220\u20D2','nap':'\u2249','napE':'\u2A70\u0338','napid':'\u224B\u0338','napos':'\u0149','napprox':'\u2249','natur':'\u266E','natural':'\u266E','naturals':'\u2115','nbsp':'\xA0','nbump':'\u224E\u0338','nbumpe':'\u224F\u0338','ncap':'\u2A43','ncaron':'\u0148','Ncaron':'\u0147','ncedil':'\u0146','Ncedil':'\u0145','ncong':'\u2247','ncongdot':'\u2A6D\u0338','ncup':'\u2A42','ncy':'\u043D','Ncy':'\u041D','ndash':'\u2013','ne':'\u2260','nearhk':'\u2924','nearr':'\u2197','neArr':'\u21D7','nearrow':'\u2197','nedot':'\u2250\u0338','NegativeMediumSpace':'\u200B','NegativeThickSpace':'\u200B','NegativeThinSpace':'\u200B','NegativeVeryThinSpace':'\u200B','nequiv':'\u2262','nesear':'\u2928','nesim':'\u2242\u0338','NestedGreaterGreater':'\u226B','NestedLessLess':'\u226A','NewLine':'\n','nexist':'\u2204','nexists':'\u2204','nfr':'\uD835\uDD2B','Nfr':'\uD835\uDD11','nge':'\u2271','ngE':'\u2267\u0338','ngeq':'\u2271','ngeqq':'\u2267\u0338','ngeqslant':'\u2A7E\u0338','nges':'\u2A7E\u0338','nGg':'\u22D9\u0338','ngsim':'\u2275','ngt':'\u226F','nGt':'\u226B\u20D2','ngtr':'\u226F','nGtv':'\u226B\u0338','nharr':'\u21AE','nhArr':'\u21CE','nhpar':'\u2AF2','ni':'\u220B','nis':'\u22FC','nisd':'\u22FA','niv':'\u220B','njcy':'\u045A','NJcy':'\u040A','nlarr':'\u219A','nlArr':'\u21CD','nldr':'\u2025','nle':'\u2270','nlE':'\u2266\u0338','nleftarrow':'\u219A','nLeftarrow':'\u21CD','nleftrightarrow':'\u21AE','nLeftrightarrow':'\u21CE','nleq':'\u2270','nleqq':'\u2266\u0338','nleqslant':'\u2A7D\u0338','nles':'\u2A7D\u0338','nless':'\u226E','nLl':'\u22D8\u0338','nlsim':'\u2274','nlt':'\u226E','nLt':'\u226A\u20D2','nltri':'\u22EA','nltrie':'\u22EC','nLtv':'\u226A\u0338','nmid':'\u2224','NoBreak':'\u2060','NonBreakingSpace':'\xA0','nopf':'\uD835\uDD5F','Nopf':'\u2115','not':'\xAC','Not':'\u2AEC','NotCongruent':'\u2262','NotCupCap':'\u226D','NotDoubleVerticalBar':'\u2226','NotElement':'\u2209','NotEqual':'\u2260','NotEqualTilde':'\u2242\u0338','NotExists':'\u2204','NotGreater':'\u226F','NotGreaterEqual':'\u2271','NotGreaterFullEqual':'\u2267\u0338','NotGreaterGreater':'\u226B\u0338','NotGreaterLess':'\u2279','NotGreaterSlantEqual':'\u2A7E\u0338','NotGreaterTilde':'\u2275','NotHumpDownHump':'\u224E\u0338','NotHumpEqual':'\u224F\u0338','notin':'\u2209','notindot':'\u22F5\u0338','notinE':'\u22F9\u0338','notinva':'\u2209','notinvb':'\u22F7','notinvc':'\u22F6','NotLeftTriangle':'\u22EA','NotLeftTriangleBar':'\u29CF\u0338','NotLeftTriangleEqual':'\u22EC','NotLess':'\u226E','NotLessEqual':'\u2270','NotLessGreater':'\u2278','NotLessLess':'\u226A\u0338','NotLessSlantEqual':'\u2A7D\u0338','NotLessTilde':'\u2274','NotNestedGreaterGreater':'\u2AA2\u0338','NotNestedLessLess':'\u2AA1\u0338','notni':'\u220C','notniva':'\u220C','notnivb':'\u22FE','notnivc':'\u22FD','NotPrecedes':'\u2280','NotPrecedesEqual':'\u2AAF\u0338','NotPrecedesSlantEqual':'\u22E0','NotReverseElement':'\u220C','NotRightTriangle':'\u22EB','NotRightTriangleBar':'\u29D0\u0338','NotRightTriangleEqual':'\u22ED','NotSquareSubset':'\u228F\u0338','NotSquareSubsetEqual':'\u22E2','NotSquareSuperset':'\u2290\u0338','NotSquareSupersetEqual':'\u22E3','NotSubset':'\u2282\u20D2','NotSubsetEqual':'\u2288','NotSucceeds':'\u2281','NotSucceedsEqual':'\u2AB0\u0338','NotSucceedsSlantEqual':'\u22E1','NotSucceedsTilde':'\u227F\u0338','NotSuperset':'\u2283\u20D2','NotSupersetEqual':'\u2289','NotTilde':'\u2241','NotTildeEqual':'\u2244','NotTildeFullEqual':'\u2247','NotTildeTilde':'\u2249','NotVerticalBar':'\u2224','npar':'\u2226','nparallel':'\u2226','nparsl':'\u2AFD\u20E5','npart':'\u2202\u0338','npolint':'\u2A14','npr':'\u2280','nprcue':'\u22E0','npre':'\u2AAF\u0338','nprec':'\u2280','npreceq':'\u2AAF\u0338','nrarr':'\u219B','nrArr':'\u21CF','nrarrc':'\u2933\u0338','nrarrw':'\u219D\u0338','nrightarrow':'\u219B','nRightarrow':'\u21CF','nrtri':'\u22EB','nrtrie':'\u22ED','nsc':'\u2281','nsccue':'\u22E1','nsce':'\u2AB0\u0338','nscr':'\uD835\uDCC3','Nscr':'\uD835\uDCA9','nshortmid':'\u2224','nshortparallel':'\u2226','nsim':'\u2241','nsime':'\u2244','nsimeq':'\u2244','nsmid':'\u2224','nspar':'\u2226','nsqsube':'\u22E2','nsqsupe':'\u22E3','nsub':'\u2284','nsube':'\u2288','nsubE':'\u2AC5\u0338','nsubset':'\u2282\u20D2','nsubseteq':'\u2288','nsubseteqq':'\u2AC5\u0338','nsucc':'\u2281','nsucceq':'\u2AB0\u0338','nsup':'\u2285','nsupe':'\u2289','nsupE':'\u2AC6\u0338','nsupset':'\u2283\u20D2','nsupseteq':'\u2289','nsupseteqq':'\u2AC6\u0338','ntgl':'\u2279','ntilde':'\xF1','Ntilde':'\xD1','ntlg':'\u2278','ntriangleleft':'\u22EA','ntrianglelefteq':'\u22EC','ntriangleright':'\u22EB','ntrianglerighteq':'\u22ED','nu':'\u03BD','Nu':'\u039D','num':'#','numero':'\u2116','numsp':'\u2007','nvap':'\u224D\u20D2','nvdash':'\u22AC','nvDash':'\u22AD','nVdash':'\u22AE','nVDash':'\u22AF','nvge':'\u2265\u20D2','nvgt':'>\u20D2','nvHarr':'\u2904','nvinfin':'\u29DE','nvlArr':'\u2902','nvle':'\u2264\u20D2','nvlt':'<\u20D2','nvltrie':'\u22B4\u20D2','nvrArr':'\u2903','nvrtrie':'\u22B5\u20D2','nvsim':'\u223C\u20D2','nwarhk':'\u2923','nwarr':'\u2196','nwArr':'\u21D6','nwarrow':'\u2196','nwnear':'\u2927','oacute':'\xF3','Oacute':'\xD3','oast':'\u229B','ocir':'\u229A','ocirc':'\xF4','Ocirc':'\xD4','ocy':'\u043E','Ocy':'\u041E','odash':'\u229D','odblac':'\u0151','Odblac':'\u0150','odiv':'\u2A38','odot':'\u2299','odsold':'\u29BC','oelig':'\u0153','OElig':'\u0152','ofcir':'\u29BF','ofr':'\uD835\uDD2C','Ofr':'\uD835\uDD12','ogon':'\u02DB','ograve':'\xF2','Ograve':'\xD2','ogt':'\u29C1','ohbar':'\u29B5','ohm':'\u03A9','oint':'\u222E','olarr':'\u21BA','olcir':'\u29BE','olcross':'\u29BB','oline':'\u203E','olt':'\u29C0','omacr':'\u014D','Omacr':'\u014C','omega':'\u03C9','Omega':'\u03A9','omicron':'\u03BF','Omicron':'\u039F','omid':'\u29B6','ominus':'\u2296','oopf':'\uD835\uDD60','Oopf':'\uD835\uDD46','opar':'\u29B7','OpenCurlyDoubleQuote':'\u201C','OpenCurlyQuote':'\u2018','operp':'\u29B9','oplus':'\u2295','or':'\u2228','Or':'\u2A54','orarr':'\u21BB','ord':'\u2A5D','order':'\u2134','orderof':'\u2134','ordf':'\xAA','ordm':'\xBA','origof':'\u22B6','oror':'\u2A56','orslope':'\u2A57','orv':'\u2A5B','oS':'\u24C8','oscr':'\u2134','Oscr':'\uD835\uDCAA','oslash':'\xF8','Oslash':'\xD8','osol':'\u2298','otilde':'\xF5','Otilde':'\xD5','otimes':'\u2297','Otimes':'\u2A37','otimesas':'\u2A36','ouml':'\xF6','Ouml':'\xD6','ovbar':'\u233D','OverBar':'\u203E','OverBrace':'\u23DE','OverBracket':'\u23B4','OverParenthesis':'\u23DC','par':'\u2225','para':'\xB6','parallel':'\u2225','parsim':'\u2AF3','parsl':'\u2AFD','part':'\u2202','PartialD':'\u2202','pcy':'\u043F','Pcy':'\u041F','percnt':'%','period':'.','permil':'\u2030','perp':'\u22A5','pertenk':'\u2031','pfr':'\uD835\uDD2D','Pfr':'\uD835\uDD13','phi':'\u03C6','Phi':'\u03A6','phiv':'\u03D5','phmmat':'\u2133','phone':'\u260E','pi':'\u03C0','Pi':'\u03A0','pitchfork':'\u22D4','piv':'\u03D6','planck':'\u210F','planckh':'\u210E','plankv':'\u210F','plus':'+','plusacir':'\u2A23','plusb':'\u229E','pluscir':'\u2A22','plusdo':'\u2214','plusdu':'\u2A25','pluse':'\u2A72','PlusMinus':'\xB1','plusmn':'\xB1','plussim':'\u2A26','plustwo':'\u2A27','pm':'\xB1','Poincareplane':'\u210C','pointint':'\u2A15','popf':'\uD835\uDD61','Popf':'\u2119','pound':'\xA3','pr':'\u227A','Pr':'\u2ABB','prap':'\u2AB7','prcue':'\u227C','pre':'\u2AAF','prE':'\u2AB3','prec':'\u227A','precapprox':'\u2AB7','preccurlyeq':'\u227C','Precedes':'\u227A','PrecedesEqual':'\u2AAF','PrecedesSlantEqual':'\u227C','PrecedesTilde':'\u227E','preceq':'\u2AAF','precnapprox':'\u2AB9','precneqq':'\u2AB5','precnsim':'\u22E8','precsim':'\u227E','prime':'\u2032','Prime':'\u2033','primes':'\u2119','prnap':'\u2AB9','prnE':'\u2AB5','prnsim':'\u22E8','prod':'\u220F','Product':'\u220F','profalar':'\u232E','profline':'\u2312','profsurf':'\u2313','prop':'\u221D','Proportion':'\u2237','Proportional':'\u221D','propto':'\u221D','prsim':'\u227E','prurel':'\u22B0','pscr':'\uD835\uDCC5','Pscr':'\uD835\uDCAB','psi':'\u03C8','Psi':'\u03A8','puncsp':'\u2008','qfr':'\uD835\uDD2E','Qfr':'\uD835\uDD14','qint':'\u2A0C','qopf':'\uD835\uDD62','Qopf':'\u211A','qprime':'\u2057','qscr':'\uD835\uDCC6','Qscr':'\uD835\uDCAC','quaternions':'\u210D','quatint':'\u2A16','quest':'?','questeq':'\u225F','quot':'"','QUOT':'"','rAarr':'\u21DB','race':'\u223D\u0331','racute':'\u0155','Racute':'\u0154','radic':'\u221A','raemptyv':'\u29B3','rang':'\u27E9','Rang':'\u27EB','rangd':'\u2992','range':'\u29A5','rangle':'\u27E9','raquo':'\xBB','rarr':'\u2192','rArr':'\u21D2','Rarr':'\u21A0','rarrap':'\u2975','rarrb':'\u21E5','rarrbfs':'\u2920','rarrc':'\u2933','rarrfs':'\u291E','rarrhk':'\u21AA','rarrlp':'\u21AC','rarrpl':'\u2945','rarrsim':'\u2974','rarrtl':'\u21A3','Rarrtl':'\u2916','rarrw':'\u219D','ratail':'\u291A','rAtail':'\u291C','ratio':'\u2236','rationals':'\u211A','rbarr':'\u290D','rBarr':'\u290F','RBarr':'\u2910','rbbrk':'\u2773','rbrace':'}','rbrack':']','rbrke':'\u298C','rbrksld':'\u298E','rbrkslu':'\u2990','rcaron':'\u0159','Rcaron':'\u0158','rcedil':'\u0157','Rcedil':'\u0156','rceil':'\u2309','rcub':'}','rcy':'\u0440','Rcy':'\u0420','rdca':'\u2937','rdldhar':'\u2969','rdquo':'\u201D','rdquor':'\u201D','rdsh':'\u21B3','Re':'\u211C','real':'\u211C','realine':'\u211B','realpart':'\u211C','reals':'\u211D','rect':'\u25AD','reg':'\xAE','REG':'\xAE','ReverseElement':'\u220B','ReverseEquilibrium':'\u21CB','ReverseUpEquilibrium':'\u296F','rfisht':'\u297D','rfloor':'\u230B','rfr':'\uD835\uDD2F','Rfr':'\u211C','rHar':'\u2964','rhard':'\u21C1','rharu':'\u21C0','rharul':'\u296C','rho':'\u03C1','Rho':'\u03A1','rhov':'\u03F1','RightAngleBracket':'\u27E9','rightarrow':'\u2192','Rightarrow':'\u21D2','RightArrow':'\u2192','RightArrowBar':'\u21E5','RightArrowLeftArrow':'\u21C4','rightarrowtail':'\u21A3','RightCeiling':'\u2309','RightDoubleBracket':'\u27E7','RightDownTeeVector':'\u295D','RightDownVector':'\u21C2','RightDownVectorBar':'\u2955','RightFloor':'\u230B','rightharpoondown':'\u21C1','rightharpoonup':'\u21C0','rightleftarrows':'\u21C4','rightleftharpoons':'\u21CC','rightrightarrows':'\u21C9','rightsquigarrow':'\u219D','RightTee':'\u22A2','RightTeeArrow':'\u21A6','RightTeeVector':'\u295B','rightthreetimes':'\u22CC','RightTriangle':'\u22B3','RightTriangleBar':'\u29D0','RightTriangleEqual':'\u22B5','RightUpDownVector':'\u294F','RightUpTeeVector':'\u295C','RightUpVector':'\u21BE','RightUpVectorBar':'\u2954','RightVector':'\u21C0','RightVectorBar':'\u2953','ring':'\u02DA','risingdotseq':'\u2253','rlarr':'\u21C4','rlhar':'\u21CC','rlm':'\u200F','rmoust':'\u23B1','rmoustache':'\u23B1','rnmid':'\u2AEE','roang':'\u27ED','roarr':'\u21FE','robrk':'\u27E7','ropar':'\u2986','ropf':'\uD835\uDD63','Ropf':'\u211D','roplus':'\u2A2E','rotimes':'\u2A35','RoundImplies':'\u2970','rpar':')','rpargt':'\u2994','rppolint':'\u2A12','rrarr':'\u21C9','Rrightarrow':'\u21DB','rsaquo':'\u203A','rscr':'\uD835\uDCC7','Rscr':'\u211B','rsh':'\u21B1','Rsh':'\u21B1','rsqb':']','rsquo':'\u2019','rsquor':'\u2019','rthree':'\u22CC','rtimes':'\u22CA','rtri':'\u25B9','rtrie':'\u22B5','rtrif':'\u25B8','rtriltri':'\u29CE','RuleDelayed':'\u29F4','ruluhar':'\u2968','rx':'\u211E','sacute':'\u015B','Sacute':'\u015A','sbquo':'\u201A','sc':'\u227B','Sc':'\u2ABC','scap':'\u2AB8','scaron':'\u0161','Scaron':'\u0160','sccue':'\u227D','sce':'\u2AB0','scE':'\u2AB4','scedil':'\u015F','Scedil':'\u015E','scirc':'\u015D','Scirc':'\u015C','scnap':'\u2ABA','scnE':'\u2AB6','scnsim':'\u22E9','scpolint':'\u2A13','scsim':'\u227F','scy':'\u0441','Scy':'\u0421','sdot':'\u22C5','sdotb':'\u22A1','sdote':'\u2A66','searhk':'\u2925','searr':'\u2198','seArr':'\u21D8','searrow':'\u2198','sect':'\xA7','semi':';','seswar':'\u2929','setminus':'\u2216','setmn':'\u2216','sext':'\u2736','sfr':'\uD835\uDD30','Sfr':'\uD835\uDD16','sfrown':'\u2322','sharp':'\u266F','shchcy':'\u0449','SHCHcy':'\u0429','shcy':'\u0448','SHcy':'\u0428','ShortDownArrow':'\u2193','ShortLeftArrow':'\u2190','shortmid':'\u2223','shortparallel':'\u2225','ShortRightArrow':'\u2192','ShortUpArrow':'\u2191','shy':'\xAD','sigma':'\u03C3','Sigma':'\u03A3','sigmaf':'\u03C2','sigmav':'\u03C2','sim':'\u223C','simdot':'\u2A6A','sime':'\u2243','simeq':'\u2243','simg':'\u2A9E','simgE':'\u2AA0','siml':'\u2A9D','simlE':'\u2A9F','simne':'\u2246','simplus':'\u2A24','simrarr':'\u2972','slarr':'\u2190','SmallCircle':'\u2218','smallsetminus':'\u2216','smashp':'\u2A33','smeparsl':'\u29E4','smid':'\u2223','smile':'\u2323','smt':'\u2AAA','smte':'\u2AAC','smtes':'\u2AAC\uFE00','softcy':'\u044C','SOFTcy':'\u042C','sol':'/','solb':'\u29C4','solbar':'\u233F','sopf':'\uD835\uDD64','Sopf':'\uD835\uDD4A','spades':'\u2660','spadesuit':'\u2660','spar':'\u2225','sqcap':'\u2293','sqcaps':'\u2293\uFE00','sqcup':'\u2294','sqcups':'\u2294\uFE00','Sqrt':'\u221A','sqsub':'\u228F','sqsube':'\u2291','sqsubset':'\u228F','sqsubseteq':'\u2291','sqsup':'\u2290','sqsupe':'\u2292','sqsupset':'\u2290','sqsupseteq':'\u2292','squ':'\u25A1','square':'\u25A1','Square':'\u25A1','SquareIntersection':'\u2293','SquareSubset':'\u228F','SquareSubsetEqual':'\u2291','SquareSuperset':'\u2290','SquareSupersetEqual':'\u2292','SquareUnion':'\u2294','squarf':'\u25AA','squf':'\u25AA','srarr':'\u2192','sscr':'\uD835\uDCC8','Sscr':'\uD835\uDCAE','ssetmn':'\u2216','ssmile':'\u2323','sstarf':'\u22C6','star':'\u2606','Star':'\u22C6','starf':'\u2605','straightepsilon':'\u03F5','straightphi':'\u03D5','strns':'\xAF','sub':'\u2282','Sub':'\u22D0','subdot':'\u2ABD','sube':'\u2286','subE':'\u2AC5','subedot':'\u2AC3','submult':'\u2AC1','subne':'\u228A','subnE':'\u2ACB','subplus':'\u2ABF','subrarr':'\u2979','subset':'\u2282','Subset':'\u22D0','subseteq':'\u2286','subseteqq':'\u2AC5','SubsetEqual':'\u2286','subsetneq':'\u228A','subsetneqq':'\u2ACB','subsim':'\u2AC7','subsub':'\u2AD5','subsup':'\u2AD3','succ':'\u227B','succapprox':'\u2AB8','succcurlyeq':'\u227D','Succeeds':'\u227B','SucceedsEqual':'\u2AB0','SucceedsSlantEqual':'\u227D','SucceedsTilde':'\u227F','succeq':'\u2AB0','succnapprox':'\u2ABA','succneqq':'\u2AB6','succnsim':'\u22E9','succsim':'\u227F','SuchThat':'\u220B','sum':'\u2211','Sum':'\u2211','sung':'\u266A','sup':'\u2283','Sup':'\u22D1','sup1':'\xB9','sup2':'\xB2','sup3':'\xB3','supdot':'\u2ABE','supdsub':'\u2AD8','supe':'\u2287','supE':'\u2AC6','supedot':'\u2AC4','Superset':'\u2283','SupersetEqual':'\u2287','suphsol':'\u27C9','suphsub':'\u2AD7','suplarr':'\u297B','supmult':'\u2AC2','supne':'\u228B','supnE':'\u2ACC','supplus':'\u2AC0','supset':'\u2283','Supset':'\u22D1','supseteq':'\u2287','supseteqq':'\u2AC6','supsetneq':'\u228B','supsetneqq':'\u2ACC','supsim':'\u2AC8','supsub':'\u2AD4','supsup':'\u2AD6','swarhk':'\u2926','swarr':'\u2199','swArr':'\u21D9','swarrow':'\u2199','swnwar':'\u292A','szlig':'\xDF','Tab':'\t','target':'\u2316','tau':'\u03C4','Tau':'\u03A4','tbrk':'\u23B4','tcaron':'\u0165','Tcaron':'\u0164','tcedil':'\u0163','Tcedil':'\u0162','tcy':'\u0442','Tcy':'\u0422','tdot':'\u20DB','telrec':'\u2315','tfr':'\uD835\uDD31','Tfr':'\uD835\uDD17','there4':'\u2234','therefore':'\u2234','Therefore':'\u2234','theta':'\u03B8','Theta':'\u0398','thetasym':'\u03D1','thetav':'\u03D1','thickapprox':'\u2248','thicksim':'\u223C','ThickSpace':'\u205F\u200A','thinsp':'\u2009','ThinSpace':'\u2009','thkap':'\u2248','thksim':'\u223C','thorn':'\xFE','THORN':'\xDE','tilde':'\u02DC','Tilde':'\u223C','TildeEqual':'\u2243','TildeFullEqual':'\u2245','TildeTilde':'\u2248','times':'\xD7','timesb':'\u22A0','timesbar':'\u2A31','timesd':'\u2A30','tint':'\u222D','toea':'\u2928','top':'\u22A4','topbot':'\u2336','topcir':'\u2AF1','topf':'\uD835\uDD65','Topf':'\uD835\uDD4B','topfork':'\u2ADA','tosa':'\u2929','tprime':'\u2034','trade':'\u2122','TRADE':'\u2122','triangle':'\u25B5','triangledown':'\u25BF','triangleleft':'\u25C3','trianglelefteq':'\u22B4','triangleq':'\u225C','triangleright':'\u25B9','trianglerighteq':'\u22B5','tridot':'\u25EC','trie':'\u225C','triminus':'\u2A3A','TripleDot':'\u20DB','triplus':'\u2A39','trisb':'\u29CD','tritime':'\u2A3B','trpezium':'\u23E2','tscr':'\uD835\uDCC9','Tscr':'\uD835\uDCAF','tscy':'\u0446','TScy':'\u0426','tshcy':'\u045B','TSHcy':'\u040B','tstrok':'\u0167','Tstrok':'\u0166','twixt':'\u226C','twoheadleftarrow':'\u219E','twoheadrightarrow':'\u21A0','uacute':'\xFA','Uacute':'\xDA','uarr':'\u2191','uArr':'\u21D1','Uarr':'\u219F','Uarrocir':'\u2949','ubrcy':'\u045E','Ubrcy':'\u040E','ubreve':'\u016D','Ubreve':'\u016C','ucirc':'\xFB','Ucirc':'\xDB','ucy':'\u0443','Ucy':'\u0423','udarr':'\u21C5','udblac':'\u0171','Udblac':'\u0170','udhar':'\u296E','ufisht':'\u297E','ufr':'\uD835\uDD32','Ufr':'\uD835\uDD18','ugrave':'\xF9','Ugrave':'\xD9','uHar':'\u2963','uharl':'\u21BF','uharr':'\u21BE','uhblk':'\u2580','ulcorn':'\u231C','ulcorner':'\u231C','ulcrop':'\u230F','ultri':'\u25F8','umacr':'\u016B','Umacr':'\u016A','uml':'\xA8','UnderBar':'_','UnderBrace':'\u23DF','UnderBracket':'\u23B5','UnderParenthesis':'\u23DD','Union':'\u22C3','UnionPlus':'\u228E','uogon':'\u0173','Uogon':'\u0172','uopf':'\uD835\uDD66','Uopf':'\uD835\uDD4C','uparrow':'\u2191','Uparrow':'\u21D1','UpArrow':'\u2191','UpArrowBar':'\u2912','UpArrowDownArrow':'\u21C5','updownarrow':'\u2195','Updownarrow':'\u21D5','UpDownArrow':'\u2195','UpEquilibrium':'\u296E','upharpoonleft':'\u21BF','upharpoonright':'\u21BE','uplus':'\u228E','UpperLeftArrow':'\u2196','UpperRightArrow':'\u2197','upsi':'\u03C5','Upsi':'\u03D2','upsih':'\u03D2','upsilon':'\u03C5','Upsilon':'\u03A5','UpTee':'\u22A5','UpTeeArrow':'\u21A5','upuparrows':'\u21C8','urcorn':'\u231D','urcorner':'\u231D','urcrop':'\u230E','uring':'\u016F','Uring':'\u016E','urtri':'\u25F9','uscr':'\uD835\uDCCA','Uscr':'\uD835\uDCB0','utdot':'\u22F0','utilde':'\u0169','Utilde':'\u0168','utri':'\u25B5','utrif':'\u25B4','uuarr':'\u21C8','uuml':'\xFC','Uuml':'\xDC','uwangle':'\u29A7','vangrt':'\u299C','varepsilon':'\u03F5','varkappa':'\u03F0','varnothing':'\u2205','varphi':'\u03D5','varpi':'\u03D6','varpropto':'\u221D','varr':'\u2195','vArr':'\u21D5','varrho':'\u03F1','varsigma':'\u03C2','varsubsetneq':'\u228A\uFE00','varsubsetneqq':'\u2ACB\uFE00','varsupsetneq':'\u228B\uFE00','varsupsetneqq':'\u2ACC\uFE00','vartheta':'\u03D1','vartriangleleft':'\u22B2','vartriangleright':'\u22B3','vBar':'\u2AE8','Vbar':'\u2AEB','vBarv':'\u2AE9','vcy':'\u0432','Vcy':'\u0412','vdash':'\u22A2','vDash':'\u22A8','Vdash':'\u22A9','VDash':'\u22AB','Vdashl':'\u2AE6','vee':'\u2228','Vee':'\u22C1','veebar':'\u22BB','veeeq':'\u225A','vellip':'\u22EE','verbar':'|','Verbar':'\u2016','vert':'|','Vert':'\u2016','VerticalBar':'\u2223','VerticalLine':'|','VerticalSeparator':'\u2758','VerticalTilde':'\u2240','VeryThinSpace':'\u200A','vfr':'\uD835\uDD33','Vfr':'\uD835\uDD19','vltri':'\u22B2','vnsub':'\u2282\u20D2','vnsup':'\u2283\u20D2','vopf':'\uD835\uDD67','Vopf':'\uD835\uDD4D','vprop':'\u221D','vrtri':'\u22B3','vscr':'\uD835\uDCCB','Vscr':'\uD835\uDCB1','vsubne':'\u228A\uFE00','vsubnE':'\u2ACB\uFE00','vsupne':'\u228B\uFE00','vsupnE':'\u2ACC\uFE00','Vvdash':'\u22AA','vzigzag':'\u299A','wcirc':'\u0175','Wcirc':'\u0174','wedbar':'\u2A5F','wedge':'\u2227','Wedge':'\u22C0','wedgeq':'\u2259','weierp':'\u2118','wfr':'\uD835\uDD34','Wfr':'\uD835\uDD1A','wopf':'\uD835\uDD68','Wopf':'\uD835\uDD4E','wp':'\u2118','wr':'\u2240','wreath':'\u2240','wscr':'\uD835\uDCCC','Wscr':'\uD835\uDCB2','xcap':'\u22C2','xcirc':'\u25EF','xcup':'\u22C3','xdtri':'\u25BD','xfr':'\uD835\uDD35','Xfr':'\uD835\uDD1B','xharr':'\u27F7','xhArr':'\u27FA','xi':'\u03BE','Xi':'\u039E','xlarr':'\u27F5','xlArr':'\u27F8','xmap':'\u27FC','xnis':'\u22FB','xodot':'\u2A00','xopf':'\uD835\uDD69','Xopf':'\uD835\uDD4F','xoplus':'\u2A01','xotime':'\u2A02','xrarr':'\u27F6','xrArr':'\u27F9','xscr':'\uD835\uDCCD','Xscr':'\uD835\uDCB3','xsqcup':'\u2A06','xuplus':'\u2A04','xutri':'\u25B3','xvee':'\u22C1','xwedge':'\u22C0','yacute':'\xFD','Yacute':'\xDD','yacy':'\u044F','YAcy':'\u042F','ycirc':'\u0177','Ycirc':'\u0176','ycy':'\u044B','Ycy':'\u042B','yen':'\xA5','yfr':'\uD835\uDD36','Yfr':'\uD835\uDD1C','yicy':'\u0457','YIcy':'\u0407','yopf':'\uD835\uDD6A','Yopf':'\uD835\uDD50','yscr':'\uD835\uDCCE','Yscr':'\uD835\uDCB4','yucy':'\u044E','YUcy':'\u042E','yuml':'\xFF','Yuml':'\u0178','zacute':'\u017A','Zacute':'\u0179','zcaron':'\u017E','Zcaron':'\u017D','zcy':'\u0437','Zcy':'\u0417','zdot':'\u017C','Zdot':'\u017B','zeetrf':'\u2128','ZeroWidthSpace':'\u200B','zeta':'\u03B6','Zeta':'\u0396','zfr':'\uD835\uDD37','Zfr':'\u2128','zhcy':'\u0436','ZHcy':'\u0416','zigrarr':'\u21DD','zopf':'\uD835\uDD6B','Zopf':'\u2124','zscr':'\uD835\uDCCF','Zscr':'\uD835\uDCB5','zwj':'\u200D','zwnj':'\u200C'};
  	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 (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;
  	}

  }(commonjsGlobal));
  }(he, he.exports));

  (function (exports) {

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

  /**
   * Module dependencies.
   */

  const {nanoid} = nonSecure;
  var path = require$$1;
  var util = require$$0$1;
  var he$1 = he.exports;

  const MOCHA_ID_PROP_NAME = '__mocha_id__';

  /**
   * 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$1.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(/\s+/g, '-')
      .replace(/[^-\w]/g, '')
      .replace(/-{2,}/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();
  };

  /**
   * 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
   * canonicalType({}) // 'object'
   * canonicalType([]) // 'array'
   * canonicalType(1) // 'number'
   * canonicalType(false) // 'boolean'
   * canonicalType(Infinity) // 'number'
   * canonicalType(null) // 'null'
   * canonicalType(new Date()) // 'date'
   * canonicalType(/foo/) // 'regexp'
   * canonicalType('type') // 'string'
   * canonicalType(global) // 'global'
   * canonicalType(new String('foo') // 'object'
   * canonicalType(async function() {}) // 'asyncfunction'
   * canonicalType(await import(name)) // 'module'
   */
  var canonicalType = (exports.canonicalType = function canonicalType(value) {
    if (value === undefined) {
      return 'undefined';
    } else if (value === null) {
      return 'null';
    } else if (isBuffer(value)) {
      return 'buffer';
    }
    return Object.prototype.toString
      .call(value)
      .replace(/^\[.+\s(.+?)]$/, '$1')
      .toLowerCase();
  });

  /**
   *
   * Returns a general type or data structure of a variable
   * @private
   * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures
   * @param {*} value The value to test.
   * @returns {string} One of undefined, boolean, number, string, bigint, symbol, object
   * @example
   * type({}) // 'object'
   * type([]) // 'array'
   * type(1) // 'number'
   * type(false) // 'boolean'
   * type(Infinity) // 'number'
   * type(null) // 'null'
   * type(new Date()) // 'object'
   * type(/foo/) // 'object'
   * type('type') // 'string'
   * type(global) // 'object'
   * type(new String('foo') // 'string'
   */
  exports.type = function type(value) {
    // Null is special
    if (value === null) return 'null';
    const primitives = new Set([
      'undefined',
      'boolean',
      'number',
      'string',
      'bigint',
      'symbol'
    ]);
    const _type = typeof value;
    if (_type === 'function') return _type;
    if (primitives.has(_type)) return _type;
    if (value instanceof String) return 'string';
    if (value instanceof Error) return 'error';
    if (Array.isArray(value)) return 'array';

    return _type;
  };

  /**
   * 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 = canonicalType(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 (canonicalType(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 'bigint':
          val = val.toString() + 'n';
          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 || canonicalType(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-next-line no-unused-vars, no-unreachable-loop */
        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;
  };

  /**
   * @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 = exports.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 {number[]} 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]);
  };

  /**
   * 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#Custom_and_Null_objects|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#Custom_and_Null_objects|MDN:Object.assign}
   * @param {...*} [obj] - Arguments to `Object.assign()`.
   * @returns {Object} An object with no prototype, having `...obj` properties
   */
  exports.createMap = function (obj) {
    return Object.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 (canonicalType(obj) !== 'object' || !Object.keys(obj).length) {
      throw new TypeError('Invalid argument; expected a non-empty object');
    }
    return Object.freeze(exports.createMap(obj));
  };

  /**
   * Returns current working directory
   *
   * Wrapper around `process.cwd()` for isolation
   * @private
   */
  exports.cwd = function cwd() {
    return process.cwd();
  };

  /**
   * Returns `true` if Mocha is running in a browser.
   * Checks for `process.browser`.
   * @returns {boolean}
   * @private
   */
  exports.isBrowser = function isBrowser() {
    return Boolean(browser$2);
  };

  /*
   * Casts `value` to an array; useful for optionally accepting array parameters
   *
   * It follows these rules, depending on `value`.  If `value` is...
   * 1. `undefined`: return an empty Array
   * 2. `null`: return an array with a single `null` element
   * 3. Any other object: return the value of `Array.from()` _if_ the object is iterable
   * 4. otherwise: return an array with a single element, `value`
   * @param {*} value - Something to cast to an Array
   * @returns {Array<*>}
   */
  exports.castArray = function castArray(value) {
    if (value === undefined) {
      return [];
    }
    if (value === null) {
      return [null];
    }
    if (
      typeof value === 'object' &&
      (typeof value[Symbol.iterator] === 'function' || value.length !== undefined)
    ) {
      return Array.from(value);
    }
    return [value];
  };

  exports.constants = exports.defineConstants({
    MOCHA_ID_PROP_NAME
  });

  /**
   * Creates a new unique identifier
   * @returns {string} Unique identifier
   */
  exports.uniqueID = () => nanoid();

  exports.assignNewMochaID = obj => {
    const id = exports.uniqueID();
    Object.defineProperty(obj, MOCHA_ID_PROP_NAME, {
      get() {
        return id;
      }
    });
    return obj;
  };

  /**
   * Retrieves a Mocha ID from an object, if present.
   * @param {*} [obj] - Object
   * @returns {string|void}
   */
  exports.getMochaID = obj =>
    obj && typeof obj === 'object' ? obj[MOCHA_ID_PROP_NAME] : undefined;
  }(utils$3));

  var _nodeResolve_empty = {};

  var _nodeResolve_empty$1 = /*#__PURE__*/Object.freeze({
    __proto__: null,
    'default': _nodeResolve_empty
  });

  var require$$18 = /*@__PURE__*/getAugmentedNamespace(_nodeResolve_empty$1);

  var browser$1 = {
  	info: 'ℹ️',
  	success: '✅',
  	warning: '⚠️',
  	error: '❌️'
  };

  var require$$0 = /*@__PURE__*/getAugmentedNamespace(_polyfillNode_events);

  /**
   @module Pending
  */

  var pending = Pending$2;

  /**
   * Initialize a new `Pending` error with the given message.
   *
   * @param {string} message
   */
  function Pending$2(message) {
    this.message = message;
  }

  var browser = {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
   */

  var ms = function(val, options) {
    options = options || {};
    var type = typeof val;
    if (type === 'string' && val.length > 0) {
      return parse(val);
    } else if (type === 'number' && isFinite(val)) {
      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+) *(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' : '');
  }

  /**
   * 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 = ms;
  	createDebug.destroy = destroy;

  	Object.keys(env).forEach(key => {
  		createDebug[key] = env[key];
  	});

  	/**
  	* 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 debug instance to be colored
  	* @return {Number|String} An ANSI color code for the given namespace
  	* @api private
  	*/
  	function selectColor(namespace) {
  		let hash = 0;

  		for (let 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) {
  		let prevTime;
  		let enableOverride = null;
  		let namespacesCache;
  		let enabledCache;

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

  			const self = debug;

  			// Set `diff` timestamp
  			const curr = Number(new Date());
  			const 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
  			let index = 0;
  			args[0] = args[0].replace(/%([a-zA-Z%])/g, (match, format) => {
  				// If we encounter an escaped % then don't increase the array index
  				if (match === '%%') {
  					return '%';
  				}
  				index++;
  				const formatter = createDebug.formatters[format];
  				if (typeof formatter === 'function') {
  					const 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);

  			const logFn = self.log || createDebug.log;
  			logFn.apply(self, args);
  		}

  		debug.namespace = namespace;
  		debug.useColors = createDebug.useColors();
  		debug.color = createDebug.selectColor(namespace);
  		debug.extend = extend;
  		debug.destroy = createDebug.destroy; // XXX Temporary. Will be removed in the next major release.

  		Object.defineProperty(debug, 'enabled', {
  			enumerable: true,
  			configurable: false,
  			get: () => {
  				if (enableOverride !== null) {
  					return enableOverride;
  				}
  				if (namespacesCache !== createDebug.namespaces) {
  					namespacesCache = createDebug.namespaces;
  					enabledCache = createDebug.enabled(namespace);
  				}

  				return enabledCache;
  			},
  			set: v => {
  				enableOverride = v;
  			}
  		});

  		// Env-specific initialization logic for debug instances
  		if (typeof createDebug.init === 'function') {
  			createDebug.init(debug);
  		}

  		return debug;
  	}

  	function extend(namespace, delimiter) {
  		const newDebug = createDebug(this.namespace + (typeof delimiter === 'undefined' ? ':' : delimiter) + namespace);
  		newDebug.log = this.log;
  		return newDebug;
  	}

  	/**
  	* 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.namespaces = namespaces;

  		createDebug.names = [];
  		createDebug.skips = [];

  		let i;
  		const split = (typeof namespaces === 'string' ? namespaces : '').split(/[\s,]+/);
  		const 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.slice(1) + '$'));
  			} else {
  				createDebug.names.push(new RegExp('^' + namespaces + '$'));
  			}
  		}
  	}

  	/**
  	* Disable debug output.
  	*
  	* @return {String} namespaces
  	* @api public
  	*/
  	function disable() {
  		const namespaces = [
  			...createDebug.names.map(toNamespace),
  			...createDebug.skips.map(toNamespace).map(namespace => '-' + namespace)
  		].join(',');
  		createDebug.enable('');
  		return namespaces;
  	}

  	/**
  	* 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;
  		}

  		let i;
  		let 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;
  	}

  	/**
  	* Convert regexp to namespace
  	*
  	* @param {RegExp} regxep
  	* @return {String} namespace
  	* @api private
  	*/
  	function toNamespace(regexp) {
  		return regexp.toString()
  			.substring(2, regexp.toString().length - 2)
  			.replace(/\.\*\?$/, '*');
  	}

  	/**
  	* Coerce `val`.
  	*
  	* @param {Mixed} val
  	* @return {Mixed}
  	* @api private
  	*/
  	function coerce(val) {
  		if (val instanceof Error) {
  			return val.stack || val.message;
  		}
  		return val;
  	}

  	/**
  	* XXX DO NOT USE. This is a temporary stub function.
  	* XXX It WILL be removed in the next major release.
  	*/
  	function destroy() {
  		console.warn('Instance method `debug.destroy()` is deprecated and no longer does anything. It will be removed in the next major version of `debug`.');
  	}

  	createDebug.enable(createDebug.load());

  	return createDebug;
  }

  var common$1 = setup;

  (function (module, exports) {
  /**
   * This is the web browser implementation of `debug()`.
   */

  exports.formatArgs = formatArgs;
  exports.save = save;
  exports.load = load;
  exports.useColors = useColors;
  exports.storage = localstorage();
  exports.destroy = (() => {
  	let warned = false;

  	return () => {
  		if (!warned) {
  			warned = true;
  			console.warn('Instance method `debug.destroy()` is deprecated and no longer does anything. It will be removed in the next major version of `debug`.');
  		}
  	};
  })();

  /**
   * 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;
  	}

  	const 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
  	let index = 0;
  	let lastC = 0;
  	args[0].replace(/%[a-zA-Z%]/g, 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.debug()` when available.
   * No-op when `console.debug` is not a "function".
   * If `console.debug` is not available, falls back
   * to `console.log`.
   *
   * @api public
   */
  exports.log = console.debug || console.log || (() => {});

  /**
   * 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() {
  	let 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 = common$1(exports);

  const {formatters} = module.exports;

  /**
   * 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;
  	}
  };
  }(browser, browser.exports));

  const {format} = require$$0$1;

  /**
   * Contains error codes, factory functions to create throwable error objects,
   * and warning/deprecation functions.
   * @module
   */

  /**
   * process.emitWarning or a polyfill
   * @see https://nodejs.org/api/process.html#process_process_emitwarning_warning_options
   * @ignore
   */
  const emitWarning = (msg, type) => {
    if (process.emitWarning) {
      process.emitWarning(msg, type);
    } else {
      /* istanbul ignore next */
      nextTick$1(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
   */
  const deprecate = msg => {
    msg = String(msg);
    if (msg && !deprecate.cache[msg]) {
      deprecate.cache[msg] = true;
      emitWarning(msg, 'DeprecationWarning');
    }
  };
  deprecate.cache = {};

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

  /**
   * When Mocha throws exceptions (or rejects `Promise`s), it attempts to assign a `code` property to the `Error` object, for easier handling. These are the potential values of `code`.
   * @public
   * @namespace
   * @memberof module:lib/errors
   */
  var constants$4 = {
    /**
     * An unrecoverable error.
     * @constant
     * @default
     */
    FATAL: 'ERR_MOCHA_FATAL',

    /**
     * The type of an argument to a function call is invalid
     * @constant
     * @default
     */
    INVALID_ARG_TYPE: 'ERR_MOCHA_INVALID_ARG_TYPE',

    /**
     * The value of an argument to a function call is invalid
     * @constant
     * @default
     */
    INVALID_ARG_VALUE: 'ERR_MOCHA_INVALID_ARG_VALUE',

    /**
     * Something was thrown, but it wasn't an `Error`
     * @constant
     * @default
     */
    INVALID_EXCEPTION: 'ERR_MOCHA_INVALID_EXCEPTION',

    /**
     * An interface (e.g., `Mocha.interfaces`) is unknown or invalid
     * @constant
     * @default
     */
    INVALID_INTERFACE: 'ERR_MOCHA_INVALID_INTERFACE',

    /**
     * A reporter (.e.g, `Mocha.reporters`) is unknown or invalid
     * @constant
     * @default
     */
    INVALID_REPORTER: 'ERR_MOCHA_INVALID_REPORTER',

    /**
     * `done()` was called twice in a `Test` or `Hook` callback
     * @constant
     * @default
     */
    MULTIPLE_DONE: 'ERR_MOCHA_MULTIPLE_DONE',

    /**
     * No files matched the pattern provided by the user
     * @constant
     * @default
     */
    NO_FILES_MATCH_PATTERN: 'ERR_MOCHA_NO_FILES_MATCH_PATTERN',

    /**
     * Known, but unsupported behavior of some kind
     * @constant
     * @default
     */
    UNSUPPORTED: 'ERR_MOCHA_UNSUPPORTED',

    /**
     * Invalid state transition occurring in `Mocha` instance
     * @constant
     * @default
     */
    INSTANCE_ALREADY_RUNNING: 'ERR_MOCHA_INSTANCE_ALREADY_RUNNING',

    /**
     * Invalid state transition occurring in `Mocha` instance
     * @constant
     * @default
     */
    INSTANCE_ALREADY_DISPOSED: 'ERR_MOCHA_INSTANCE_ALREADY_DISPOSED',

    /**
     * Use of `only()` w/ `--forbid-only` results in this error.
     * @constant
     * @default
     */
    FORBIDDEN_EXCLUSIVITY: 'ERR_MOCHA_FORBIDDEN_EXCLUSIVITY',

    /**
     * To be thrown when a user-defined plugin implementation (e.g., `mochaHooks`) is invalid
     * @constant
     * @default
     */
    INVALID_PLUGIN_IMPLEMENTATION: 'ERR_MOCHA_INVALID_PLUGIN_IMPLEMENTATION',

    /**
     * To be thrown when a builtin or third-party plugin definition (the _definition_ of `mochaHooks`) is invalid
     * @constant
     * @default
     */
    INVALID_PLUGIN_DEFINITION: 'ERR_MOCHA_INVALID_PLUGIN_DEFINITION',

    /**
     * When a runnable exceeds its allowed run time.
     * @constant
     * @default
     */
    TIMEOUT: 'ERR_MOCHA_TIMEOUT',

    /**
     * Input file is not able to be parsed
     * @constant
     * @default
     */
    UNPARSABLE_FILE: 'ERR_MOCHA_UNPARSABLE_FILE'
  };

  /**
   * A set containing all string values of all Mocha error constants, for use by {@link isMochaError}.
   * @private
   */
  const MOCHA_ERRORS = new Set(Object.values(constants$4));

  /**
   * Creates an error object to be thrown when no files to be tested could be found using specified pattern.
   *
   * @public
   * @static
   * @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 = constants$4.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 = constants$4.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
   * @static
   * @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 = constants$4.INVALID_INTERFACE;
    err.interface = ui;
    return err;
  }

  /**
   * Creates an error object to be thrown when a behavior, option, or parameter is unsupported.
   *
   * @public
   * @static
   * @param {string} message - Error message to be displayed.
   * @returns {Error} instance detailing the error condition
   */
  function createUnsupportedError$2(message) {
    var err = new Error(message);
    err.code = constants$4.UNSUPPORTED;
    return err;
  }

  /**
   * Creates an error object to be thrown when an argument is missing.
   *
   * @public
   * @static
   * @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$1(message, argument, expected) {
    return createInvalidArgumentTypeError$1(message, argument, expected);
  }

  /**
   * Creates an error object to be thrown when an argument did not use the supported type
   *
   * @public
   * @static
   * @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$1(message, argument, expected) {
    var err = new TypeError(message);
    err.code = constants$4.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
   * @static
   * @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 = constants$4.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
   * @static
   * @param {string} message - Error message to be displayed.
   * @returns {Error} instance detailing the error condition
   */
  function createInvalidExceptionError$2(message, value) {
    var err = new Error(message);
    err.code = constants$4.INVALID_EXCEPTION;
    err.valueType = typeof value;
    err.value = value;
    return err;
  }

  /**
   * Creates an error object to be thrown when an unrecoverable error occurs.
   *
   * @public
   * @static
   * @param {string} message - Error message to be displayed.
   * @returns {Error} instance detailing the error condition
   */
  function createFatalError$1(message, value) {
    var err = new Error(message);
    err.code = constants$4.FATAL;
    err.valueType = typeof value;
    err.value = value;
    return err;
  }

  /**
   * Dynamically creates a plugin-type-specific error based on plugin type
   * @param {string} message - Error message
   * @param {"reporter"|"ui"} pluginType - Plugin type. Future: expand as needed
   * @param {string} [pluginId] - Name/path of plugin, if any
   * @throws When `pluginType` is not known
   * @public
   * @static
   * @returns {Error}
   */
  function createInvalidLegacyPluginError(message, pluginType, pluginId) {
    switch (pluginType) {
      case 'reporter':
        return createInvalidReporterError(message, pluginId);
      case 'ui':
        return createInvalidInterfaceError(message, pluginId);
      default:
        throw new Error('unknown pluginType "' + pluginType + '"');
    }
  }

  /**
   * **DEPRECATED**.  Use {@link createInvalidLegacyPluginError} instead  Dynamically creates a plugin-type-specific error based on plugin type
   * @deprecated
   * @param {string} message - Error message
   * @param {"reporter"|"interface"} pluginType - Plugin type. Future: expand as needed
   * @param {string} [pluginId] - Name/path of plugin, if any
   * @throws When `pluginType` is not known
   * @public
   * @static
   * @returns {Error}
   */
  function createInvalidPluginError(...args) {
    deprecate('Use createInvalidLegacyPluginError() instead');
    return createInvalidLegacyPluginError(...args);
  }

  /**
   * Creates an error object to be thrown when a mocha object's `run` method is executed while it is already disposed.
   * @param {string} message The error message to be displayed.
   * @param {boolean} cleanReferencesAfterRun the value of `cleanReferencesAfterRun`
   * @param {Mocha} instance the mocha instance that throw this error
   * @static
   */
  function createMochaInstanceAlreadyDisposedError(
    message,
    cleanReferencesAfterRun,
    instance
  ) {
    var err = new Error(message);
    err.code = constants$4.INSTANCE_ALREADY_DISPOSED;
    err.cleanReferencesAfterRun = cleanReferencesAfterRun;
    err.instance = instance;
    return err;
  }

  /**
   * Creates an error object to be thrown when a mocha object's `run` method is called while a test run is in progress.
   * @param {string} message The error message to be displayed.
   * @static
   * @public
   */
  function createMochaInstanceAlreadyRunningError(message, instance) {
    var err = new Error(message);
    err.code = constants$4.INSTANCE_ALREADY_RUNNING;
    err.instance = instance;
    return err;
  }

  /**
   * Creates an error object to be thrown when done() is called multiple times in a test
   *
   * @public
   * @param {Runnable} runnable - Original runnable
   * @param {Error} [originalErr] - Original error, if any
   * @returns {Error} instance detailing the error condition
   * @static
   */
  function createMultipleDoneError$1(runnable, originalErr) {
    var title;
    try {
      title = format('<%s>', runnable.fullTitle());
      if (runnable.parent.root) {
        title += ' (of root suite)';
      }
    } catch (ignored) {
      title = format('<%s> (of unknown suite)', runnable.title);
    }
    var message = format(
      'done() called multiple times in %s %s',
      runnable.type ? runnable.type : 'unknown runnable',
      title
    );
    if (runnable.file) {
      message += format(' of file %s', runnable.file);
    }
    if (originalErr) {
      message += format('; in addition, done() received error: %s', originalErr);
    }

    var err = new Error(message);
    err.code = constants$4.MULTIPLE_DONE;
    err.valueType = typeof originalErr;
    err.value = originalErr;
    return err;
  }

  /**
   * Creates an error object to be thrown when `.only()` is used with
   * `--forbid-only`.
   * @static
   * @public
   * @param {Mocha} mocha - Mocha instance
   * @returns {Error} Error with code {@link constants.FORBIDDEN_EXCLUSIVITY}
   */
  function createForbiddenExclusivityError$1(mocha) {
    var err = new Error(
      mocha.isWorker
        ? '`.only` is not supported in parallel mode'
        : '`.only` forbidden by --forbid-only'
    );
    err.code = constants$4.FORBIDDEN_EXCLUSIVITY;
    return err;
  }

  /**
   * Creates an error object to be thrown when a plugin definition is invalid
   * @static
   * @param {string} msg - Error message
   * @param {PluginDefinition} [pluginDef] - Problematic plugin definition
   * @public
   * @returns {Error} Error with code {@link constants.INVALID_PLUGIN_DEFINITION}
   */
  function createInvalidPluginDefinitionError(msg, pluginDef) {
    const err = new Error(msg);
    err.code = constants$4.INVALID_PLUGIN_DEFINITION;
    err.pluginDef = pluginDef;
    return err;
  }

  /**
   * Creates an error object to be thrown when a plugin implementation (user code) is invalid
   * @static
   * @param {string} msg - Error message
   * @param {Object} [opts] - Plugin definition and user-supplied implementation
   * @param {PluginDefinition} [opts.pluginDef] - Plugin Definition
   * @param {*} [opts.pluginImpl] - Plugin Implementation (user-supplied)
   * @public
   * @returns {Error} Error with code {@link constants.INVALID_PLUGIN_DEFINITION}
   */
  function createInvalidPluginImplementationError(
    msg,
    {pluginDef, pluginImpl} = {}
  ) {
    const err = new Error(msg);
    err.code = constants$4.INVALID_PLUGIN_IMPLEMENTATION;
    err.pluginDef = pluginDef;
    err.pluginImpl = pluginImpl;
    return err;
  }

  /**
   * Creates an error object to be thrown when a runnable exceeds its allowed run time.
   * @static
   * @param {string} msg - Error message
   * @param {number} [timeout] - Timeout in ms
   * @param {string} [file] - File, if given
   * @returns {MochaTimeoutError}
   */
  function createTimeoutError$1(msg, timeout, file) {
    const err = new Error(msg);
    err.code = constants$4.TIMEOUT;
    err.timeout = timeout;
    err.file = file;
    return err;
  }

  /**
   * Creates an error object to be thrown when file is unparsable
   * @public
   * @static
   * @param {string} message - Error message to be displayed.
   * @param {string} filename - File name
   * @returns {Error} Error with code {@link constants.UNPARSABLE_FILE}
   */
  function createUnparsableFileError(message, filename) {
    var err = new Error(message);
    err.code = constants$4.UNPARSABLE_FILE;
    return err;
  }

  /**
   * Returns `true` if an error came out of Mocha.
   * _Can suffer from false negatives, but not false positives._
   * @static
   * @public
   * @param {*} err - Error, or anything
   * @returns {boolean}
   */
  const isMochaError$1 = err =>
    Boolean(err && typeof err === 'object' && MOCHA_ERRORS.has(err.code));

  var errors$2 = {
    constants: constants$4,
    createFatalError: createFatalError$1,
    createForbiddenExclusivityError: createForbiddenExclusivityError$1,
    createInvalidArgumentTypeError: createInvalidArgumentTypeError$1,
    createInvalidArgumentValueError,
    createInvalidExceptionError: createInvalidExceptionError$2,
    createInvalidInterfaceError,
    createInvalidLegacyPluginError,
    createInvalidPluginDefinitionError,
    createInvalidPluginError,
    createInvalidPluginImplementationError,
    createInvalidReporterError,
    createMissingArgumentError: createMissingArgumentError$1,
    createMochaInstanceAlreadyDisposedError,
    createMochaInstanceAlreadyRunningError,
    createMultipleDoneError: createMultipleDoneError$1,
    createNoFilesMatchPatternError,
    createTimeoutError: createTimeoutError$1,
    createUnparsableFileError,
    createUnsupportedError: createUnsupportedError$2,
    deprecate,
    isMochaError: isMochaError$1,
    warn
  };

  var EventEmitter$1 = require$$0.EventEmitter;
  var Pending$1 = pending;
  var debug$1 = browser.exports('mocha:runnable');
  var milliseconds = ms$1;
  var utils$2 = utils$3;
  const {
    createInvalidExceptionError: createInvalidExceptionError$1,
    createMultipleDoneError,
    createTimeoutError
  } = errors$2;

  /**
   * Save timer references to avoid Sinon interfering (see GH-237).
   * @private
   */
  var Date$3 = commonjsGlobal.Date;
  var setTimeout$2 = commonjsGlobal.setTimeout;
  var clearTimeout$1 = commonjsGlobal.clearTimeout;
  var toString = Object.prototype.toString;

  var runnable = Runnable$3;

  /**
   * Initialize a new `Runnable` with the given `title` and callback `fn`.
   *
   * @class
   * @extends external:EventEmitter
   * @public
   * @param {String} title
   * @param {Function} fn
   */
  function Runnable$3(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._retries = -1;
    utils$2.assignNewMochaID(this);
    Object.defineProperty(this, 'id', {
      get() {
        return utils$2.getMochaID(this);
      }
    });
    this.reset();
  }

  /**
   * Inherit from `EventEmitter.prototype`.
   */
  utils$2.inherits(Runnable$3, EventEmitter$1);

  /**
   * Resets the state initially or for a next run.
   */
  Runnable$3.prototype.reset = function () {
    this.timedOut = false;
    this._currentRetry = 0;
    this.pending = false;
    delete this.state;
    delete this.err;
  };

  /**
   * 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$3.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$2.clamp(ms, range);

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

    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$3.prototype.slow = function (ms) {
    if (!arguments.length || typeof ms === 'undefined') {
      return this._slow;
    }
    if (typeof ms === 'string') {
      ms = milliseconds(ms);
    }
    debug$1('slow %d', ms);
    this._slow = ms;
    return this;
  };

  /**
   * Halt and mark as pending.
   *
   * @memberof Mocha.Runnable
   * @public
   */
  Runnable$3.prototype.skip = function () {
    this.pending = true;
    throw new Pending$1('sync skip; aborting execution');
  };

  /**
   * Check if this runnable or its parent suite is marked as pending.
   *
   * @private
   */
  Runnable$3.prototype.isPending = function () {
    return this.pending || (this.parent && this.parent.isPending());
  };

  /**
   * Return `true` if this Runnable has failed.
   * @return {boolean}
   * @private
   */
  Runnable$3.prototype.isFailed = function () {
    return !this.isPending() && this.state === constants$3.STATE_FAILED;
  };

  /**
   * Return `true` if this Runnable has passed.
   * @return {boolean}
   * @private
   */
  Runnable$3.prototype.isPassed = function () {
    return !this.isPending() && this.state === constants$3.STATE_PASSED;
  };

  /**
   * Set or get number of retries.
   *
   * @private
   */
  Runnable$3.prototype.retries = function (n) {
    if (!arguments.length) {
      return this._retries;
    }
    this._retries = n;
  };

  /**
   * Set or get current retry
   *
   * @private
   */
  Runnable$3.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$3.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$3.prototype.titlePath = function () {
    return this.parent.titlePath().concat([this.title]);
  };

  /**
   * Clear the timeout.
   *
   * @private
   */
  Runnable$3.prototype.clearTimeout = function () {
    clearTimeout$1(this.timer);
  };

  /**
   * Reset the timeout.
   *
   * @private
   */
  Runnable$3.prototype.resetTimeout = function () {
    var self = this;
    var ms = this.timeout();

    if (ms === 0) {
      return;
    }
    this.clearTimeout();
    this.timer = setTimeout$2(function () {
      if (self.timeout() === 0) {
        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$3.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$3.prototype.run = function (fn) {
    var self = this;
    var start = new Date$3();
    var ctx = this.ctx;
    var finished;
    var errorWasHandled = false;

    if (this.isPending()) return fn();

    // Sometimes the ctx exists, but it is not runnable
    if (ctx && ctx.runnable) {
      ctx.runnable(this);
    }

    // called multiple times
    function multiple(err) {
      if (errorWasHandled) {
        return;
      }
      errorWasHandled = true;
      self.emit('error', createMultipleDoneError(self, err));
    }

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

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

      self.clearTimeout();
      self.duration = new Date$3() - start;
      finished = true;
      if (!err && self.duration > ms && ms > 0) {
        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$1('async skip; aborting execution');
      };

      try {
        callFnAsync(this.fn);
      } catch (err) {
        // handles async runnables which actually run synchronously
        errorWasHandled = true;
        if (err instanceof Pending$1) {
          return; // done() is already called in this.skip()
        } else if (this.allowUncaught) {
          throw err;
        }
        done(Runnable$3.toValueOrError(err));
      }
      return;
    }

    // sync or promise-returning
    try {
      callFn(this.fn);
    } catch (err) {
      errorWasHandled = true;
      if (err instanceof Pending$1) {
        return done();
      } else if (this.allowUncaught) {
        throw err;
      }
      done(Runnable$3.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$2.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$3.prototype._timeoutError = function (ms) {
    let 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 createTimeoutError(msg, ms, this.file);
  };

  var constants$3 = utils$2.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',
      /**
       * Value of `state` prop when a `Runnable` has been skipped by user
       */
      STATE_PENDING: 'pending'
    }
  );

  /**
   * 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$3.toValueOrError = function (value) {
    return (
      value ||
      createInvalidExceptionError$1(
        'Runnable failed with falsy or undefined exception. Please throw an Error instead.',
        value
      )
    );
  };

  Runnable$3.constants = constants$3;

  var suite = {exports: {}};

  var Runnable$2 = runnable;
  const {inherits, constants: constants$2} = utils$3;
  const {MOCHA_ID_PROP_NAME: MOCHA_ID_PROP_NAME$1} = constants$2;

  /**
   * Expose `Hook`.
   */

  var hook = 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$2.call(this, title, fn);
    this.type = 'hook';
  }

  /**
   * Inherit from `Runnable.prototype`.
   */
  inherits(Hook, Runnable$2);

  /**
   * Resets the state for a next run.
   */
  Hook.prototype.reset = function () {
    Runnable$2.prototype.reset.call(this);
    delete this._error;
  };

  /**
   * 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;
  };

  /**
   * Returns an object suitable for IPC.
   * Functions are represented by keys beginning with `$$`.
   * @private
   * @returns {Object}
   */
  Hook.prototype.serialize = function serialize() {
    return {
      $$currentRetry: this.currentRetry(),
      $$fullTitle: this.fullTitle(),
      $$isPending: Boolean(this.isPending()),
      $$titlePath: this.titlePath(),
      ctx:
        this.ctx && this.ctx.currentTest
          ? {
              currentTest: {
                title: this.ctx.currentTest.title,
                [MOCHA_ID_PROP_NAME$1]: this.ctx.currentTest.id
              }
            }
          : {},
      duration: this.duration,
      file: this.file,
      parent: {
        $$fullTitle: this.parent.fullTitle(),
        [MOCHA_ID_PROP_NAME$1]: this.parent.id
      },
      state: this.state,
      title: this.title,
      type: this.type,
      [MOCHA_ID_PROP_NAME$1]: this.id
    };
  };

  (function (module, exports) {

  /**
   * Module dependencies.
   * @private
   */
  const {EventEmitter} = require$$0;
  const Hook = hook;
  var {
    assignNewMochaID,
    clamp,
    constants: utilsConstants,
    defineConstants,
    getMochaID,
    inherits,
    isString
  } = utils$3;
  const debug = browser.exports('mocha:suite');
  const milliseconds = ms$1;
  const errors = errors$2;

  const {MOCHA_ID_PROP_NAME} = utilsConstants;

  /**
   * Expose `Suite`.
   */

  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 (!isString(title)) {
      throw errors.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.root = isRoot === true;
    this.pending = false;
    this._retries = -1;
    this._beforeEach = [];
    this._beforeAll = [];
    this._afterEach = [];
    this._afterAll = [];
    this._timeout = 2000;
    this._slow = 75;
    this._bail = false;
    this._onlyTests = [];
    this._onlySuites = [];
    assignNewMochaID(this);

    Object.defineProperty(this, 'id', {
      get() {
        return getMochaID(this);
      }
    });

    this.reset();
  }

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

  /**
   * Resets the state initially or for a next run.
   */
  Suite.prototype.reset = function () {
    this.delayed = false;
    function doReset(thingToReset) {
      thingToReset.reset();
    }
    this.suites.forEach(doReset);
    this.tests.forEach(doReset);
    this._beforeEach.forEach(doReset);
    this._afterEach.forEach(doReset);
    this._beforeAll.forEach(doReset);
    this._afterAll.forEach(doReset);
  };

  /**
   * 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.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 (typeof ms === 'string') {
      ms = milliseconds(ms);
    }

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

    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 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.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.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.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);
  };

  /**
   * Marks a suite to be `only`.
   *
   * @private
   */
  Suite.prototype.markOnly = function () {
    this.parent && this.parent.appendOnlySuite(this);
  };

  /**
   * 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 all references from this suite and all child suites.
   */
  Suite.prototype.dispose = function () {
    this.suites.forEach(function (suite) {
      suite.dispose();
    });
    this.cleanReferences();
  };

  /**
   * 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;
    }
  };

  /**
   * Returns an object suitable for IPC.
   * Functions are represented by keys beginning with `$$`.
   * @private
   * @returns {Object}
   */
  Suite.prototype.serialize = function serialize() {
    return {
      _bail: this._bail,
      $$fullTitle: this.fullTitle(),
      $$isPending: Boolean(this.isPending()),
      root: this.root,
      title: this.title,
      [MOCHA_ID_PROP_NAME]: this.id,
      parent: this.parent ? {[MOCHA_ID_PROP_NAME]: this.parent.id} : null
    };
  };

  var constants = 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 each" hooks.
       */
      HOOK_TYPE_BEFORE_EACH: 'beforeEach',

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

  Suite.constants = constants;
  }(suite));

  /**
   * Module dependencies.
   * @private
   */
  var EventEmitter = require$$0.EventEmitter;
  var Pending = pending;
  var utils$1 = utils$3;
  var debug = browser.exports('mocha:runner');
  var Runnable$1 = runnable;
  var Suite$2 = suite.exports;
  var HOOK_TYPE_BEFORE_EACH = Suite$2.constants.HOOK_TYPE_BEFORE_EACH;
  var HOOK_TYPE_AFTER_EACH = Suite$2.constants.HOOK_TYPE_AFTER_EACH;
  var HOOK_TYPE_AFTER_ALL = Suite$2.constants.HOOK_TYPE_AFTER_ALL;
  var HOOK_TYPE_BEFORE_ALL = Suite$2.constants.HOOK_TYPE_BEFORE_ALL;
  var EVENT_ROOT_SUITE_RUN = Suite$2.constants.EVENT_ROOT_SUITE_RUN;
  var STATE_FAILED = Runnable$1.constants.STATE_FAILED;
  var STATE_PASSED = Runnable$1.constants.STATE_PASSED;
  var STATE_PENDING = Runnable$1.constants.STATE_PENDING;
  var stackFilter = utils$1.stackTraceFilter();
  var stringify = utils$1.stringify;

  const {
    createInvalidExceptionError,
    createUnsupportedError: createUnsupportedError$1,
    createFatalError,
    isMochaError,
    constants: errorConstants
  } = errors$2;

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

  var constants$1 = utils$1.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',
      /**
       * Initial state of Runner
       */
      STATE_IDLE: 'idle',
      /**
       * State set to this value when the Runner has started running
       */
      STATE_RUNNING: 'running',
      /**
       * State set to this value when the Runner has stopped
       */
      STATE_STOPPED: 'stopped'
    }
  );

  class Runner extends EventEmitter {
    /**
     * 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 {Object} [opts] - Settings object
     * @param {boolean} [opts.cleanReferencesAfterRun] - Whether to clean references to test fns and hooks when a suite is done.
     * @param {boolean} [opts.delay] - Whether to delay execution of root suite until ready.
     * @param {boolean} [opts.dryRun] - Whether to report tests without running them.
     * @param {boolean} [opts.failZero] - Whether to fail test run if zero tests encountered.
     */
    constructor(suite, opts = {}) {
      super();

      var self = this;
      this._globals = [];
      this._abort = false;
      this.suite = suite;
      this._opts = opts;
      this.state = constants$1.STATE_IDLE;
      this.total = suite.total();
      this.failures = 0;
      /**
       * @type {Map<EventEmitter,Map<string,Set<EventListener>>>}
       */
      this._eventListeners = new Map();
      this.on(constants$1.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$1.EVENT_HOOK_END, function (hook) {
        self.checkGlobals(hook);
      });
      this._defaultGrep = /.*/;
      this.grep(this._defaultGrep);
      this.globals(this.globalProps());

      this.uncaught = this._uncaught.bind(this);
      this.unhandled = (reason, promise) => {
        if (isMochaError(reason)) {
          debug(
            'trapped unhandled rejection coming out of Mocha; forwarding to uncaught handler:',
            reason
          );
          this.uncaught(reason);
        } else {
          debug(
            'trapped unhandled rejection from (probably) user code; re-emitting on process'
          );
          this._removeEventListener(
            process,
            'unhandledRejection',
            this.unhandled
          );
          try {
            process.emit('unhandledRejection', reason, promise);
          } finally {
            this._addEventListener(process, 'unhandledRejection', this.unhandled);
          }
        }
      };
    }
  }

  /**
   * Wrapper for setImmediate, process.nextTick, or browser polyfill.
   *
   * @param {Function} fn
   * @private
   */
  Runner.immediately = commonjsGlobal.setImmediate || nextTick$1;

  /**
   * Replacement for `target.on(eventName, listener)` that does bookkeeping to remove them when this runner instance is disposed.
   * @param {EventEmitter} target - The `EventEmitter`
   * @param {string} eventName - The event name
   * @param {string} fn - Listener function
   * @private
   */
  Runner.prototype._addEventListener = function (target, eventName, listener) {
    debug(
      '_addEventListener(): adding for event %s; %d current listeners',
      eventName,
      target.listenerCount(eventName)
    );
    /* istanbul ignore next */
    if (
      this._eventListeners.has(target) &&
      this._eventListeners.get(target).has(eventName) &&
      this._eventListeners.get(target).get(eventName).has(listener)
    ) {
      debug(
        'warning: tried to attach duplicate event listener for %s',
        eventName
      );
      return;
    }
    target.on(eventName, listener);
    const targetListeners = this._eventListeners.has(target)
      ? this._eventListeners.get(target)
      : new Map();
    const targetEventListeners = targetListeners.has(eventName)
      ? targetListeners.get(eventName)
      : new Set();
    targetEventListeners.add(listener);
    targetListeners.set(eventName, targetEventListeners);
    this._eventListeners.set(target, targetListeners);
  };

  /**
   * Replacement for `target.removeListener(eventName, listener)` that also updates the bookkeeping.
   * @param {EventEmitter} target - The `EventEmitter`
   * @param {string} eventName - The event name
   * @param {function} listener - Listener function
   * @private
   */
  Runner.prototype._removeEventListener = function (target, eventName, listener) {
    target.removeListener(eventName, listener);

    if (this._eventListeners.has(target)) {
      const targetListeners = this._eventListeners.get(target);
      if (targetListeners.has(eventName)) {
        const targetEventListeners = targetListeners.get(eventName);
        targetEventListeners.delete(listener);
        if (!targetEventListeners.size) {
          targetListeners.delete(eventName);
        }
      }
      if (!targetListeners.size) {
        this._eventListeners.delete(target);
      }
    } else {
      debug('trying to remove listener for untracked object %s', target);
    }
  };

  /**
   * Removes all event handlers set during a run on this instance.
   * Remark: this does _not_ clean/dispose the tests or suites themselves.
   */
  Runner.prototype.dispose = function () {
    this.removeAllListeners();
    this._eventListeners.forEach((targetListeners, target) => {
      targetListeners.forEach((targetEventListeners, eventName) => {
        targetEventListeners.forEach(listener => {
          target.removeListener(eventName, listener);
        });
      });
    });
    this._eventListeners.clear();
  };

  /**
   * 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(): setting to %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(commonjsGlobal);

    // 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(): setting to %O', 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: ${leaks.map(e => `'${e}'`).join(', ')}`;
      this.fail(test, new Error(msg));
    }
  };

  /**
   * Fail the given `test`.
   *
   * If `test` is a 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 {Runnable} test
   * @param {Error} err
   * @param {boolean} [force=false] - Whether to fail a pending test.
   */
  Runner.prototype.fail = function (test, err, force) {
    force = force === true;
    if (test.isPending() && !force) {
      return;
    }
    if (this.state === constants$1.STATE_STOPPED) {
      if (err.code === errorConstants.MULTIPLE_DONE) {
        throw err;
      }
      throw createFatalError(
        'Test failed after root suite execution completed!',
        err
      );
    }

    ++this.failures;
    debug('total number of failures: %d', 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$1.EVENT_TEST_FAIL, test, err);
  };

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

  Runner.prototype.hook = function (name, fn) {
    if (this._opts.dryRun) return 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;
      }

      setHookTitle(hook);

      hook.allowUncaught = self.allowUncaught;

      self.emit(constants$1.EVENT_HOOK_BEGIN, hook);

      if (!hook.listeners('error').length) {
        self._addEventListener(hook, 'error', function (err) {
          self.fail(hook, err);
        });
      }

      hook.run(function cbHookRun(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$1.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;
            });
            hooks = [];
          } else {
            hook.pending = false;
            var errForbid = createUnsupportedError$1('`this.skip` forbidden');
            self.fail(hook, errForbid);
            return fn(errForbid);
          }
        } else if (err) {
          self.fail(hook, err);
          // stop executing hooks, notify callee of hook err
          return fn(err);
        }
        self.emit(constants$1.EVENT_HOOK_END, hook);
        delete hook.ctx.currentTest;
        setHookTitle(hook);
        next(++i);
      });

      function setHookTitle(hook) {
        hook.originalTitle = hook.originalTitle || hook.title;
        if (hook.ctx && hook.ctx.currentTest) {
          hook.title = `${hook.originalTitle} for "${hook.ctx.currentTest.title}"`;
        } else {
          var parentTitle;
          if (hook.parent.title) {
            parentTitle = hook.parent.title;
          } else {
            parentTitle = hook.parent.root ? '{root}' : '';
          }
          hook.title = `${hook.originalTitle} in "${parentTitle}"`;
        }
      }
    }

    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 'afterEach' hooks from bottom up.
   *
   * @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 'beforeEach' hooks from top level down.
   *
   * @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) {
    if (this._opts.dryRun) return Runner.immediately(fn);

    var self = this;
    var test = this.test;

    if (!test) {
      return;
    }

    if (this.asyncOnly) {
      test.asyncOnly = true;
    }
    this._addEventListener(test, 'error', function (err) {
      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) {
        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) {
          self.fail(test, new Error('Pending test forbidden'), true);
        } else {
          test.state = STATE_PENDING;
          self.emit(constants$1.EVENT_TEST_PENDING, test);
        }
        self.emit(constants$1.EVENT_TEST_END, test);
        return next();
      }

      // execute test and hook(s)
      self.emit(constants$1.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) {
            self.fail(test, new Error('Pending test forbidden'), true);
          } else {
            test.state = STATE_PENDING;
            self.emit(constants$1.EVENT_TEST_PENDING, test);
          }
          self.emit(constants$1.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) {
              self.fail(test, new Error('Pending test forbidden'), true);
            } else {
              test.state = STATE_PENDING;
              self.emit(constants$1.EVENT_TEST_PENDING, test);
            }
            self.emit(constants$1.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$1.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$1.EVENT_TEST_END, test);
            return self.hookUp(HOOK_TYPE_AFTER_EACH, next);
          }

          test.state = STATE_PASSED;
          self.emit(constants$1.EVENT_TEST_PASS, test);
          self.emit(constants$1.EVENT_TEST_END, test);
          self.hookUp(HOOK_TYPE_AFTER_EACH, next);
        });
      });
    }

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

  /**
   * 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('runSuite(): running %s', suite.fullTitle());

    if (!total || (self.failures && suite._bail)) {
      debug('runSuite(): bailing');
      return fn();
    }

    this.emit(constants$1.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$1.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.
   *
   * This function is bound to the instance as `Runner#uncaught` at instantiation
   * time. It's intended to be listening on the `Process.uncaughtException` event.
   * In order to not leak EE listeners, we need to ensure no more than a single
   * `uncaughtException` listener exists per `Runner`.  The only way to do
   * this--because this function needs the context (and we don't have lambdas)--is
   * to use `Function.prototype.bind`. We need strict equality to unregister and
   * _only_ unregister the _one_ listener we set from the
   * `Process.uncaughtException` event; would be poor form to just remove
   * everything. See {@link Runner#run} for where the event listener is registered
   * and unregistered.
   * @param {Error} err - Some uncaught error
   * @private
   */
  Runner.prototype._uncaught = function (err) {
    // this is defensive to prevent future developers from mis-calling this function.
    // it's more likely that it'd be called with the incorrect context--say, the global
    // `process` object--than it would to be called with a context that is not a "subclass"
    // of `Runner`.
    if (!(this instanceof Runner)) {
      throw createFatalError(
        'Runner#uncaught() called with invalid context',
        this
      );
    }
    if (err instanceof Pending) {
      debug('uncaught(): caught a Pending');
      return;
    }
    // browser does not exit script when throwing in global.onerror()
    if (this.allowUncaught && !utils$1.isBrowser()) {
      debug('uncaught(): bubbling exception due to --allow-uncaught');
      throw err;
    }

    if (this.state === constants$1.STATE_STOPPED) {
      debug('uncaught(): throwing after run has completed!');
      throw err;
    }

    if (err) {
      debug('uncaught(): got truthy 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);
      debug('uncaught(): converted "error" %o to Error', err);
    }
    err.uncaught = true;

    var runnable = this.currentRunnable;

    if (!runnable) {
      runnable = new Runnable$1('Uncaught error outside test suite');
      debug('uncaught(): no current Runnable; created a phony one');
      runnable.parent = this.suite;

      if (this.state === constants$1.STATE_RUNNING) {
        debug('uncaught(): failing gracefully');
        this.fail(runnable, err);
      } else {
        // Can't recover from this failure
        debug('uncaught(): test run has not yet started; unrecoverable');
        this.emit(constants$1.EVENT_RUN_BEGIN);
        this.fail(runnable, err);
        this.emit(constants$1.EVENT_RUN_END);
      }

      return;
    }

    runnable.clearTimeout();

    if (runnable.isFailed()) {
      debug('uncaught(): Runnable has already failed');
      // Ignore error if already failed
      return;
    } else if (runnable.isPending()) {
      debug('uncaught(): pending Runnable wound up failing!');
      // report 'pending test' retrospectively as failed
      this.fail(runnable, err, true);
      return;
    }

    // we cannot recover gracefully if a Runnable has already passed
    // then fails asynchronously
    if (runnable.isPassed()) {
      debug('uncaught(): Runnable has already passed; bailing gracefully');
      this.fail(runnable, err);
      this.abort();
    } else {
      debug('uncaught(): forcing Runnable to complete with Error');
      return runnable.callback(err);
    }
  };

  /**
   * Run the root suite and invoke `fn(failures)`
   * on completion.
   *
   * @public
   * @memberof Runner
   * @param {Function} fn - Callback when finished
   * @param {Object} [opts] - For subclasses
   * @param {string[]} opts.files - Files to run
   * @param {Options} opts.options - command-line options
   * @returns {Runner} Runner instance.
   */
  Runner.prototype.run = function (fn, opts = {}) {
    var rootSuite = this.suite;
    var options = opts.options || {};

    debug('run(): got options: %O', options);
    fn = fn || function () {};

    const end = () => {
      if (!this.total && this._opts.failZero) this.failures = 1;

      debug('run(): root suite completed; emitting %s', constants$1.EVENT_RUN_END);
      this.emit(constants$1.EVENT_RUN_END);
    };

    const begin = () => {
      debug('run(): emitting %s', constants$1.EVENT_RUN_BEGIN);
      this.emit(constants$1.EVENT_RUN_BEGIN);
      debug('run(): emitted %s', constants$1.EVENT_RUN_BEGIN);

      this.runSuite(rootSuite, end);
    };

    const prepare = () => {
      debug('run(): starting');
      // If there is an `only` filter
      if (rootSuite.hasOnly()) {
        rootSuite.filterOnly();
        debug('run(): filtered exclusive Runnables');
      }
      this.state = constants$1.STATE_RUNNING;
      if (this._opts.delay) {
        this.emit(constants$1.EVENT_DELAY_END);
        debug('run(): "delay" ended');
      }

      return begin();
    };

    // references cleanup to avoid memory leaks
    if (this._opts.cleanReferencesAfterRun) {
      this.on(constants$1.EVENT_SUITE_END, suite => {
        suite.cleanReferences();
      });
    }

    // callback
    this.on(constants$1.EVENT_RUN_END, function () {
      this.state = constants$1.STATE_STOPPED;
      debug('run(): emitted %s', constants$1.EVENT_RUN_END);
      fn(this.failures);
    });

    this._removeEventListener(process, 'uncaughtException', this.uncaught);
    this._removeEventListener(process, 'unhandledRejection', this.unhandled);
    this._addEventListener(process, 'uncaughtException', this.uncaught);
    this._addEventListener(process, 'unhandledRejection', this.unhandled);

    if (this._opts.delay) {
      // for reporters, I guess.
      // might be nice to debounce some dots while we wait.
      this.emit(constants$1.EVENT_DELAY_BEGIN, rootSuite);
      rootSuite.once(EVENT_ROOT_SUITE_RUN, prepare);
      debug('run(): waiting for green light due to --delay');
    } else {
      Runner.immediately(prepare);
    }

    return this;
  };

  /**
   * Toggle partial object linking behavior; used for building object references from
   * unique ID's. Does nothing in serial mode, because the object references already exist.
   * Subclasses can implement this (e.g., `ParallelBufferedRunner`)
   * @abstract
   * @param {boolean} [value] - If `true`, enable partial object linking, otherwise disable
   * @returns {Runner}
   * @chainable
   * @public
   * @example
   * // this reporter needs proper object references when run in parallel mode
   * class MyReporter() {
   *   constructor(runner) {
   *     this.runner.linkPartialObjects(true)
   *       .on(EVENT_SUITE_BEGIN, suite => {
             // this Suite may be the same object...
   *       })
   *       .on(EVENT_TEST_BEGIN, test => {
   *         // ...as the `test.parent` property
   *       });
   *   }
   * }
   */
  Runner.prototype.linkPartialObjects = function (value) {
    return this;
  };

  /*
   * Like {@link Runner#run}, but does not accept a callback and returns a `Promise` instead of a `Runner`.
   * This function cannot reject; an `unhandledRejection` event will bubble up to the `process` object instead.
   * @public
   * @memberof Runner
   * @param {Object} [opts] - Options for {@link Runner#run}
   * @returns {Promise<number>} Failure count
   */
  Runner.prototype.runAsync = async function runAsync(opts = {}) {
    return new Promise(resolve => {
      this.run(resolve, opts);
    });
  };

  /**
   * Cleanly abort execution.
   *
   * @memberof Runner
   * @public
   * @return {Runner} Runner instance.
   */
  Runner.prototype.abort = function () {
    debug('abort(): aborting');
    this._abort = true;

    return this;
  };

  /**
   * Returns `true` if Mocha is running in parallel mode.  For reporters.
   *
   * Subclasses should return an appropriate value.
   * @public
   * @returns {false}
   */
  Runner.prototype.isParallelMode = function isParallelMode() {
    return false;
  };

  /**
   * Configures an alternate reporter for worker processes to use. Subclasses
   * using worker processes should implement this.
   * @public
   * @param {string} path - Absolute path to alternate reporter for worker processes to use
   * @returns {Runner}
   * @throws When in serial mode
   * @chainable
   * @abstract
   */
  Runner.prototype.workerReporter = function () {
    throw createUnsupportedError$1('workerReporter() not supported in serial mode');
  };

  /**
   * 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 (commonjsGlobal.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 (commonjsGlobal.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 && (!commonjsGlobal.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 ${utils$1.canonicalType(err)} ${stringify(
      err
    )} was thrown, throw an Error :)`
    );
  }

  Runner.constants = constants$1;

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

  var runner = Runner;

  (function (module, exports) {
  /**
   * @module Base
   */
  /**
   * Module dependencies.
   */

  var diff = lib;
  var milliseconds = ms$1;
  var utils = utils$3;
  var supportsColor = require$$18;
  var symbols = browser$1;
  var constants = runner.constants;
  var EVENT_TEST_PASS = constants.EVENT_TEST_PASS;
  var EVENT_TEST_FAIL = constants.EVENT_TEST_FAIL;

  const isBrowser = utils.isBrowser();

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

  /**
   * Expose `Base`.
   */

  exports = module.exports = Base;

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

  var isatty = isBrowser || (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 =
    !isBrowser &&
    (supportsColor.stdout || process.env.MOCHA_COLORS !== undefined);

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

  exports.inlineDiffs = false;

  /**
   * Truncate diffs longer than this value to avoid slow performance
   */
  exports.maxDiffSize = 8192;

  /**
   * 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,
    'diff added inline': '30;42',
    'diff removed inline': '30;41'
  };

  /**
   * Default symbol map.
   */

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

  /**
   * 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) {
    if (isBrowser) {
      exports.window.width = getBrowserWindowSize()[1];
    } else {
      exports.window.width = process.stdout.getWindowSize(1)[0];
    }
  }

  /**
   * 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 {
      var maxLen = exports.maxDiffSize;
      var skipped = 0;
      if (maxLen > 0) {
        skipped = Math.max(actual.length - maxLen, expected.length - maxLen);
        actual = actual.slice(0, maxLen);
        expected = expected.slice(0, maxLen);
      }
      let result = exports.inlineDiffs
        ? inlineDiff(actual, expected)
        : unifiedDiff(actual, expected);
      if (skipped > 0) {
        result = `${result}\n      [mocha] output truncated to ${maxLen} characters, see "maxDiffSize" reporter-option\n`;
      }
      return result;
    } 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 (typeof err.inspect === 'function') {
        message = err.inspect() + '';
      } else if (err.message && typeof err.message.toString === 'function') {
        message = err.message + '';
      } 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

    var maxDiffSizeOpt =
      this.options.reporterOption && this.options.reporterOption.maxDiffSize;
    if (maxDiffSizeOpt !== undefined && !isNaN(Number(maxDiffSizeOpt))) {
      exports.maxDiffSize = Number(maxDiffSizeOpt);
    }

    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 inline', 'actual') +
      ' ' +
      color('diff added inline', '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 inline', str.value);
        }
        if (str.removed) {
          return colorLines('diff removed inline', 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;
  }(base$1, base$1.exports));

  var dot = {exports: {}};

  (function (module, exports) {
  /**
   * @module Dot
   */
  /**
   * Module dependencies.
   */

  var Base = base$1.exports;
  var inherits = utils$3.inherits;
  var constants = 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`.
   */

  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';
  }(dot));

  var doc = {exports: {}};

  (function (module, exports) {
  /**
   * @module Doc
   */
  /**
   * Module dependencies.
   */

  var Base = base$1.exports;
  var utils = utils$3;
  var constants = 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`.
   */

  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));
      Base.consoleLog('%s  <dt>%s</dt>', indent(), utils.escape(test.file));
      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)
      );
      Base.consoleLog(
        '%s  <dt class="error">%s</dt>',
        indent(),
        utils.escape(test.file)
      );
      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';
  }(doc));

  var tap = {exports: {}};

  (function (module, exports) {
  /**
   * @module TAP
   */
  /**
   * Module dependencies.
   */

  var util = require$$0$1;
  var Base = base$1.exports;
  var constants = 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 = utils$3.inherits;
  var sprintf = util.format;

  /**
   * Expose `TAP`.
   */

  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 () {
      self._producer.writeVersion();
    });

    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);
    this.writePlan(stats.passes + stats.failures + stats.pending);
  };

  /**
   * @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';
  }(tap));

  var json = {exports: {}};

  var _polyfillNode_fs = {};

  var _polyfillNode_fs$1 = /*#__PURE__*/Object.freeze({
    __proto__: null,
    'default': _polyfillNode_fs
  });

  var require$$2 = /*@__PURE__*/getAugmentedNamespace(_polyfillNode_fs$1);

  (function (module, exports) {
  /**
   * @module JSON
   */
  /**
   * Module dependencies.
   */

  var Base = base$1.exports;
  var fs = require$$2;
  var path = require$$1;
  const createUnsupportedError = errors$2.createUnsupportedError;
  const utils = utils$3;
  var constants = runner.constants;
  var EVENT_TEST_PASS = constants.EVENT_TEST_PASS;
  var EVENT_TEST_PENDING = constants.EVENT_TEST_PENDING;
  var EVENT_TEST_FAIL = constants.EVENT_TEST_FAIL;
  var EVENT_TEST_END = constants.EVENT_TEST_END;
  var EVENT_RUN_END = constants.EVENT_RUN_END;

  /**
   * Expose `JSON`.
   */

  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 = [];
    var output;

    if (options.reporterOption && options.reporterOption.output) {
      if (utils.isBrowser()) {
        throw createUnsupportedError('file output not supported in browser');
      }
      output = options.reporterOption.output;
    }

    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;

      var json = JSON.stringify(obj, null, 2);
      if (output) {
        try {
          fs.mkdirSync(path.dirname(output), {recursive: true});
          fs.writeFileSync(output, json);
        } catch (err) {
          console.error(
            `${Base.symbols.err} [mocha] writing output to "${output}" failed: ${err.message}\n`
          );
          process.stdout.write(json);
        }
      } else {
        process.stdout.write(json);
      }
    });
  }

  /**
   * 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(),
      file: test.file,
      duration: test.duration,
      currentRetry: test.currentRetry(),
      speed: test.speed,
      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';
  }(json));

  var html = {exports: {}};

  /**
   @module browser/Progress
  */

  /**
   * Expose `Progress`.
   */

  var progress$1 = 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 darkMatcher = window.matchMedia('(prefers-color-scheme: dark)');
      var isDarkMode = !!darkMatcher.matches;
      var lightColors = {
        outerCircle: '#9f9f9f',
        innerCircle: '#eee',
        text: '#000'
      };
      var darkColors = {
        outerCircle: '#888',
        innerCircle: '#444',
        text: '#fff'
      };
      var colors = isDarkMode ? darkColors : lightColors;

      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 = colors.outerCircle;
      ctx.beginPath();
      ctx.arc(x, y, rad, 0, angle, false);
      ctx.stroke();

      // inner circle
      ctx.strokeStyle = colors.innerCircle;
      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.fillStyle = colors.text;
      ctx.fillText(text, x - w / 2 + 1, y + fontSize / 2 - 1);
    } catch (ignore) {
      // don't fail if we can't render progress
    }
    return this;
  };

  (function (module, exports) {

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

  var Base = base$1.exports;
  var utils = utils$3;
  var Progress = progress$1;
  var escapeRe = escapeStringRegexp;
  var constants = 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 = commonjsGlobal.Date;

  /**
   * Expose `HTML`.
   */

  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.slice(
            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;
  }(html));

  var list = {exports: {}};

  (function (module, exports) {
  /**
   * @module List
   */
  /**
   * Module dependencies.
   */

  var Base = base$1.exports;
  var inherits = utils$3.inherits;
  var constants = 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`.
   */

  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';
  }(list));

  var min = {exports: {}};

  (function (module, exports) {
  /**
   * @module Min
   */
  /**
   * Module dependencies.
   */

  var Base = base$1.exports;
  var inherits = utils$3.inherits;
  var constants = runner.constants;
  var EVENT_RUN_END = constants.EVENT_RUN_END;
  var EVENT_RUN_BEGIN = constants.EVENT_RUN_BEGIN;

  /**
   * Expose `Min`.
   */

  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';
  }(min));

  var spec = {exports: {}};

  (function (module, exports) {
  /**
   * @module Spec
   */
  /**
   * Module dependencies.
   */

  var Base = base$1.exports;
  var constants = 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 = utils$3.inherits;
  var color = Base.color;

  /**
   * Expose `Spec`.
   */

  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]';
  }(spec));

  var nyan = {exports: {}};

  (function (module, exports) {
  /**
   * @module Nyan
   */
  /**
   * Module dependencies.
   */

  var Base = base$1.exports;
  var constants = runner.constants;
  var inherits = utils$3.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`.
   */

  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"';
  }(nyan));

  var xunit = {exports: {}};

  (function (module, exports) {
  /**
   * @module XUnit
   */
  /**
   * Module dependencies.
   */

  var Base = base$1.exports;
  var utils = utils$3;
  var fs = require$$2;
  var path = require$$1;
  var errors = errors$2;
  var createUnsupportedError = errors.createUnsupportedError;
  var constants = 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 = runnable.constants.STATE_FAILED;
  var inherits = utils.inherits;
  var escape = utils.escape;

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

  /**
   * Expose `XUnit`.
   */

  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');
        }

        fs.mkdirSync(path.dirname(options.reporterOptions.output), {
          recursive: true
        });
        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';
  }(xunit));

  var markdown = {exports: {}};

  (function (module, exports) {
  /**
   * @module Markdown
   */
  /**
   * Module dependencies.
   */

  var Base = base$1.exports;
  var utils = utils$3;
  var constants = 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`.
   */

  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';
  }(markdown));

  var progress = {exports: {}};

  (function (module, exports) {
  /**
   * @module Progress
   */
  /**
   * Module dependencies.
   */

  var Base = base$1.exports;
  var constants = 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 = utils$3.inherits;
  var color = Base.color;
  var cursor = Base.cursor;

  /**
   * Expose `Progress`.
   */

  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';
  }(progress));

  var landing = {exports: {}};

  (function (module, exports) {
  /**
   * @module Landing
   */
  /**
   * Module dependencies.
   */

  var Base = base$1.exports;
  var inherits = utils$3.inherits;
  var constants = 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 = runnable.constants.STATE_FAILED;

  var cursor = Base.cursor;
  var color = Base.color;

  /**
   * Expose `Landing`.
   */

  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 stream = process.stdout;

    var plane = color('plane', '✈');
    var crashed = -1;
    var n = 0;
    var total = 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();
    });

    // if cursor is hidden when we ctrl-C, then it will remain hidden unless...
    process.once('SIGINT', function () {
      cursor.show();
      nextTick$1(function () {
        process.kill(process.pid, 'SIGINT');
      });
    });
  }

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

  Landing.description = 'Unicode landing strip';
  }(landing));

  var jsonStream = {exports: {}};

  (function (module, exports) {
  /**
   * @module JSONStream
   */
  /**
   * Module dependencies.
   */

  var Base = base$1.exports;
  var constants = 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`.
   */

  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(),
      file: test.file,
      duration: test.duration,
      currentRetry: test.currentRetry(),
      speed: test.speed
    };
  }

  JSONStream.description = 'newline delimited JSON events';
  }(jsonStream));

  (function (exports) {

  // Alias exports to a their normalized format Mocha#reporter to prevent a need
  // for dynamic (try/catch) requires, which Browserify doesn't handle.
  exports.Base = exports.base = base$1.exports;
  exports.Dot = exports.dot = dot.exports;
  exports.Doc = exports.doc = doc.exports;
  exports.TAP = exports.tap = tap.exports;
  exports.JSON = exports.json = json.exports;
  exports.HTML = exports.html = html.exports;
  exports.List = exports.list = list.exports;
  exports.Min = exports.min = min.exports;
  exports.Spec = exports.spec = spec.exports;
  exports.Nyan = exports.nyan = nyan.exports;
  exports.XUnit = exports.xunit = xunit.exports;
  exports.Markdown = exports.markdown = markdown.exports;
  exports.Progress = exports.progress = progress.exports;
  exports.Landing = exports.landing = landing.exports;
  exports.JSONStream = exports['json-stream'] = jsonStream.exports;
  }(reporters));

  var diff = true;
  var extension = [
  	"js",
  	"cjs",
  	"mjs"
  ];
  var reporter = "spec";
  var slow = 75;
  var timeout = 2000;
  var ui = "bdd";
  var require$$4 = {
  	diff: diff,
  	extension: extension,
  	"package": "./package.json",
  	reporter: reporter,
  	slow: slow,
  	timeout: timeout,
  	ui: ui,
  	"watch-ignore": [
  	"node_modules",
  	".git"
  ]
  };

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

  var constants = 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$2 = commonjsGlobal.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$2();
    });
    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$2();
      stats.duration = stats.end - stats.start;
    });
  }

  var statsCollector = createStatsCollector;

  var interfaces = {};

  var bdd = {exports: {}};

  var Runnable = runnable;
  var utils = utils$3;
  var errors$1 = errors$2;
  var createInvalidArgumentTypeError = errors$1.createInvalidArgumentTypeError;
  var isString = utils.isString;

  const {MOCHA_ID_PROP_NAME} = utils.constants;

  var test = Test$4;

  /**
   * 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$4(title, fn) {
    if (!isString(title)) {
      throw createInvalidArgumentTypeError(
        'Test argument "title" should be a string. Received type "' +
          typeof title +
          '"',
        'title',
        'string'
      );
    }
    this.type = 'test';
    Runnable.call(this, title, fn);
    this.reset();
  }

  /**
   * Inherit from `Runnable.prototype`.
   */
  utils.inherits(Test$4, Runnable);

  /**
   * Resets the state initially or for a next run.
   */
  Test$4.prototype.reset = function () {
    Runnable.prototype.reset.call(this);
    this.pending = !this.fn;
    delete this.state;
  };

  /**
   * Set or get retried test
   *
   * @private
   */
  Test$4.prototype.retriedTest = function (n) {
    if (!arguments.length) {
      return this._retriedTest;
    }
    this._retriedTest = n;
  };

  /**
   * Add test to the list of tests marked `only`.
   *
   * @private
   */
  Test$4.prototype.markOnly = function () {
    this.parent.appendOnlyTest(this);
  };

  Test$4.prototype.clone = function () {
    var test = new Test$4(this.title, this.fn);
    test.timeout(this.timeout());
    test.slow(this.slow());
    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;
  };

  /**
   * Returns an minimal object suitable for transmission over IPC.
   * Functions are represented by keys beginning with `$$`.
   * @private
   * @returns {Object}
   */
  Test$4.prototype.serialize = function serialize() {
    return {
      $$currentRetry: this._currentRetry,
      $$fullTitle: this.fullTitle(),
      $$isPending: Boolean(this.pending),
      $$retriedTest: this._retriedTest || null,
      $$slow: this._slow,
      $$titlePath: this.titlePath(),
      body: this.body,
      duration: this.duration,
      err: this.err,
      parent: {
        $$fullTitle: this.parent.fullTitle(),
        [MOCHA_ID_PROP_NAME]: this.parent.id
      },
      speed: this.speed,
      state: this.state,
      title: this.title,
      type: this.type,
      file: this.file,
      [MOCHA_ID_PROP_NAME]: this.id
    };
  };

  /**
   @module interfaces/common
  */

  var Suite$1 = suite.exports;
  var errors = errors$2;
  var createMissingArgumentError = errors.createMissingArgumentError;
  var createUnsupportedError = errors.createUnsupportedError;
  var createForbiddenExclusivityError = errors.createForbiddenExclusivityError;

  /**
   * Functions common to more than one interface.
   *
   * @private
   * @param {Suite[]} suites
   * @param {Context} context
   * @param {Mocha} mocha
   * @return {Object} An object containing common functions.
   */
  var common = 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) {
          if (mocha.options.forbidOnly) {
            throw createForbiddenExclusivityError(mocha);
          }
          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$1.create(suites[0], opts.title);
          suite.pending = Boolean(opts.pending);
          suite.file = opts.file;
          suites.unshift(suite);
          if (opts.isOnly) {
            suite.markOnly();
          }
          if (
            suite.pending &&
            mocha.options.forbidPending &&
            shouldBeTested(suite)
          ) {
            throw createUnsupportedError('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) {
          if (mocha.options.forbidOnly) {
            throw createForbiddenExclusivityError(mocha);
          }
          test.markOnly();
          return test;
        },

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

  var Test$3 = test;
  var EVENT_FILE_PRE_REQUIRE$2 =
    suite.exports.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.
   */
  bdd.exports = function bddInterface(suite) {
    var suites = [suite];

    suite.on(EVENT_FILE_PRE_REQUIRE$2, function (context, file, mocha) {
      var common$1 = common(suites, context, mocha);

      context.before = common$1.before;
      context.after = common$1.after;
      context.beforeEach = common$1.beforeEach;
      context.afterEach = common$1.afterEach;
      context.run = mocha.options.delay && common$1.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$1.suite.create({
          title: title,
          file: file,
          fn: fn
        });
      };

      /**
       * Pending describe.
       */

      context.xdescribe =
        context.xcontext =
        context.describe.skip =
          function (title, fn) {
            return common$1.suite.skip({
              title: title,
              file: file,
              fn: fn
            });
          };

      /**
       * Exclusive suite.
       */

      context.describe.only = function (title, fn) {
        return common$1.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$3(title, fn);
        test.file = file;
        suite.addTest(test);
        return test;
      };

      /**
       * Exclusive test-case.
       */

      context.it.only = function (title, fn) {
        return common$1.test.only(mocha, context.it(title, fn));
      };

      /**
       * Pending test case.
       */

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

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

  var tdd = {exports: {}};

  var Test$2 = test;
  var EVENT_FILE_PRE_REQUIRE$1 =
    suite.exports.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.
   */
  tdd.exports = function (suite) {
    var suites = [suite];

    suite.on(EVENT_FILE_PRE_REQUIRE$1, function (context, file, mocha) {
      var common$1 = common(suites, context, mocha);

      context.setup = common$1.beforeEach;
      context.teardown = common$1.afterEach;
      context.suiteSetup = common$1.before;
      context.suiteTeardown = common$1.after;
      context.run = mocha.options.delay && common$1.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$1.suite.create({
          title: title,
          file: file,
          fn: fn
        });
      };

      /**
       * Pending suite.
       */
      context.suite.skip = function (title, fn) {
        return common$1.suite.skip({
          title: title,
          file: file,
          fn: fn
        });
      };

      /**
       * Exclusive test-case.
       */
      context.suite.only = function (title, fn) {
        return common$1.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$2(title, fn);
        test.file = file;
        suite.addTest(test);
        return test;
      };

      /**
       * Exclusive test-case.
       */

      context.test.only = function (title, fn) {
        return common$1.test.only(mocha, context.test(title, fn));
      };

      context.test.skip = common$1.test.skip;
    });
  };

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

  var qunit = {exports: {}};

  var Test$1 = test;
  var EVENT_FILE_PRE_REQUIRE =
    suite.exports.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.
   */
  qunit.exports = function qUnitInterface(suite) {
    var suites = [suite];

    suite.on(EVENT_FILE_PRE_REQUIRE, function (context, file, mocha) {
      var common$1 = common(suites, context, mocha);

      context.before = common$1.before;
      context.after = common$1.after;
      context.beforeEach = common$1.beforeEach;
      context.afterEach = common$1.afterEach;
      context.run = mocha.options.delay && common$1.runWithSuite(suite);
      /**
       * Describe a "suite" with the given `title`.
       */

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

      /**
       * Exclusive Suite.
       */

      context.suite.only = function (title) {
        if (suites.length > 1) {
          suites.shift();
        }
        return common$1.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$1(title, fn);
        test.file = file;
        suites[0].addTest(test);
        return test;
      };

      /**
       * Exclusive test-case.
       */

      context.test.only = function (title, fn) {
        return common$1.test.only(mocha, context.test(title, fn));
      };

      context.test.skip = common$1.test.skip;
    });
  };

  qunit.exports.description = 'QUnit style';

  var exports$1 = {exports: {}};

  var Suite = suite.exports;
  var Test = 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.
   */
  exports$1.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();
        }
      }
    }
  };

  exports$1.exports.description = 'Node.js module ("exports") style';

  interfaces.bdd = bdd.exports;
  interfaces.tdd = tdd.exports;
  interfaces.qunit = qunit.exports;
  interfaces.exports = exports$1.exports;

  /**
   * @module Context
   */
  /**
   * Expose `Context`.
   */

  var context = 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 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;
  };

  var name = "mocha";
  var version = "10.0.0";
  var homepage = "https://mochajs.org/";
  var notifyLogo = "https://ibin.co/4QuRuGjXvl36.png";
  var require$$17 = {
  	name: name,
  	version: version,
  	homepage: homepage,
  	notifyLogo: notifyLogo
  };

  (function (module, exports) {

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

  var escapeRe = escapeStringRegexp;
  var path = require$$1;
  var builtinReporters = reporters;
  var utils = utils$3;
  var mocharc = require$$4;
  var Suite = suite.exports;
  var esmUtils = require$$18;
  var createStatsCollector = statsCollector;
  const {
    createInvalidReporterError,
    createInvalidInterfaceError,
    createMochaInstanceAlreadyDisposedError,
    createMochaInstanceAlreadyRunningError,
    createUnsupportedError
  } = errors$2;
  const {EVENT_FILE_PRE_REQUIRE, EVENT_FILE_POST_REQUIRE, EVENT_FILE_REQUIRE} =
    Suite.constants;
  var debug = browser.exports('mocha:mocha');

  exports = module.exports = Mocha;

  /**
   * A Mocha instance is a finite state machine.
   * These are the states it can be in.
   * @private
   */
  var mochaStates = utils.defineConstants({
    /**
     * Initial state of the mocha instance
     * @private
     */
    INIT: 'init',
    /**
     * Mocha instance is running tests
     * @private
     */
    RUNNING: 'running',
    /**
     * Mocha instance is done running tests and references to test functions and hooks are cleaned.
     * You can reset this state by unloading the test files.
     * @private
     */
    REFERENCES_CLEANED: 'referencesCleaned',
    /**
     * Mocha instance is disposed and can no longer be used.
     * @private
     */
    DISPOSED: 'disposed'
  });

  /**
   * To require local UIs and reporters when running in node.
   */

  if (!utils.isBrowser() && typeof module.paths !== 'undefined') {
    var cwd = utils.cwd();
    module.paths.push(cwd, path.join(cwd, 'node_modules'));
  }

  /**
   * Expose internals.
   * @private
   */

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

  let currentContext;
  exports.afterEach = function (...args) {
    return (currentContext.afterEach || currentContext.teardown).apply(
      this,
      args
    );
  };
  exports.after = function (...args) {
    return (currentContext.after || currentContext.suiteTeardown).apply(
      this,
      args
    );
  };
  exports.beforeEach = function (...args) {
    return (currentContext.beforeEach || currentContext.setup).apply(this, args);
  };
  exports.before = function (...args) {
    return (currentContext.before || currentContext.suiteSetup).apply(this, args);
  };
  exports.describe = function (...args) {
    return (currentContext.describe || currentContext.suite).apply(this, args);
  };
  exports.describe.only = function (...args) {
    return (currentContext.describe || currentContext.suite).only.apply(
      this,
      args
    );
  };
  exports.describe.skip = function (...args) {
    return (currentContext.describe || currentContext.suite).skip.apply(
      this,
      args
    );
  };
  exports.it = function (...args) {
    return (currentContext.it || currentContext.test).apply(this, args);
  };
  exports.it.only = function (...args) {
    return (currentContext.it || currentContext.test).only.apply(this, args);
  };
  exports.it.skip = function (...args) {
    return (currentContext.it || currentContext.test).skip.apply(this, args);
  };
  exports.xdescribe = exports.describe.skip;
  exports.xit = exports.it.skip;
  exports.setup = exports.beforeEach;
  exports.suiteSetup = exports.before;
  exports.suiteTeardown = exports.after;
  exports.suite = exports.describe;
  exports.teardown = exports.afterEach;
  exports.test = exports.it;
  exports.run = function (...args) {
    return currentContext.run.apply(this, args);
  };

  /**
   * 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 {boolean} [options.dryRun] - Report tests without running them?
   * @param {boolean} [options.failZero] - Fail test run if zero tests?
   * @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.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.
   * @param {boolean} [options.parallel] - Run jobs in parallel.
   * @param {number} [options.jobs] - Max number of worker processes for parallel runs.
   * @param {MochaRootHookObject} [options.rootHooks] - Hooks to bootstrap the root suite with.
   * @param {string[]} [options.require] - Pathname of `rootHooks` plugin for parallel runs.
   * @param {boolean} [options.isWorker] - Should be `true` if `Mocha` process is running in a worker process.
   */
  function Mocha(options = {}) {
    options = {...mocharc, ...options};
    this.files = [];
    this.options = options;
    // root suite
    this.suite = new exports.Suite('', new exports.Context(), true);
    this._cleanReferencesAfterRun = true;
    this._state = mochaStates.INIT;

    this.grep(options.grep)
      .fgrep(options.fgrep)
      .ui(options.ui)
      .reporter(
        options.reporter,
        options.reporterOption || options.reporterOptions // for backwards compatibility
      )
      .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',
      'dryRun',
      'failZero',
      'forbidOnly',
      'forbidPending',
      'fullTrace',
      'inlineDiffs',
      'invert'
    ].forEach(function (opt) {
      if (options[opt]) {
        this[opt]();
      }
    }, this);

    if (options.rootHooks) {
      this.rootHooks(options.rootHooks);
    }

    /**
     * The class which we'll instantiate in {@link Mocha#run}.  Defaults to
     * {@link Runner} in serial mode; changes in parallel mode.
     * @memberof Mocha
     * @private
     */
    this._runnerClass = exports.Runner;

    /**
     * Whether or not to call {@link Mocha#loadFiles} implicitly when calling
     * {@link Mocha#run}.  If this is `true`, then it's up to the consumer to call
     * {@link Mocha#loadFiles} _or_ {@link Mocha#loadFilesAsync}.
     * @private
     * @memberof Mocha
     */
    this._lazyLoadFiles = false;

    /**
     * It's useful for a Mocha instance to know if it's running in a worker process.
     * We could derive this via other means, but it's helpful to have a flag to refer to.
     * @memberof Mocha
     * @private
     */
    this.isWorker = Boolean(options.isWorker);

    this.globalSetup(options.globalSetup)
      .globalTeardown(options.globalTeardown)
      .enableGlobalSetup(options.enableGlobalSetup)
      .enableGlobalTeardown(options.enableGlobalTeardown);

    if (
      options.parallel &&
      (typeof options.jobs === 'undefined' || options.jobs > 1)
    ) {
      debug('attempting to enable parallel mode');
      this.parallelMode(true);
    }
  }

  /**
   * 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} reporterName - 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 (reporterName, reporterOptions) {
    if (typeof reporterName === 'function') {
      this._reporter = reporterName;
    } else {
      reporterName = reporterName || 'spec';
      var reporter;
      // Try to load a built-in reporter.
      if (builtinReporters[reporterName]) {
        reporter = builtinReporters[reporterName];
      }
      // Try to load reporters from process.cwd() and node_modules
      if (!reporter) {
        let foundReporter;
        try {
          foundReporter = require.resolve(reporterName);
          reporter = commonjsRequire(foundReporter);
        } catch (err) {
          if (foundReporter) {
            throw createInvalidReporterError(err.message, foundReporter);
          }
          // Try to load reporters from a cwd-relative path
          try {
            reporter = commonjsRequire(path.resolve(reporterName));
          } catch (e) {
            throw createInvalidReporterError(e.message, reporterName);
          }
        }
      }
      this._reporter = reporter;
    }
    this.options.reporterOption = reporterOptions;
    // alias option name is used in built-in 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 = commonjsRequire(ui);
        } catch (err) {
          throw createInvalidInterfaceError(`invalid interface '${ui}'`, ui);
        }
      }
    }
    bindInterface(this.suite);

    this.suite.on(EVENT_FILE_PRE_REQUIRE, function (context) {
      currentContext = context;
    });

    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, commonjsGlobal, file, self);
      suite.emit(EVENT_FILE_REQUIRE, commonjsRequire(file), file, self);
      suite.emit(EVENT_FILE_POST_REQUIRE, commonjsGlobal, 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.lazyLoadFiles(true);

    return esmUtils.loadFilesAsync(
      this.files,
      function (file) {
        suite.emit(EVENT_FILE_PRE_REQUIRE, commonjsGlobal, file, self);
      },
      function (file, resultModule) {
        suite.emit(EVENT_FILE_REQUIRE, resultModule, file, self);
        suite.emit(EVENT_FILE_POST_REQUIRE, commonjsGlobal, 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) {
    if (utils.isBrowser()) {
      throw createUnsupportedError(
        'unloadFile() is only supported in a Node.js environment'
      );
    }
    return require$$18.unloadFile(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 () {
    if (this._state === mochaStates.DISPOSED) {
      throw createMochaInstanceAlreadyDisposedError(
        'Mocha instance is already disposed, it cannot be used again.',
        this._cleanReferencesAfterRun,
        this
      );
    }

    this.files.forEach(function (file) {
      Mocha.unloadFile(file);
    });
    this._state = mochaStates.INIT;
    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$/');    // NO! Use `.only()` to do this!
   */
  Mocha.prototype.grep = function (re) {
    if (utils.isString(re)) {
      // extract args if it's regex-like, i.e: [string, pattern, flag]
      var arg = re.match(/^\/(.*)\/([gimy]{0,4})$|.*/);
      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 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;
  };

  /**
   * Enables or disables whether or not to dispose after each test run.
   * Disable this to ensure you can run the test suite multiple times.
   * If disabled, be sure to dispose mocha when you're done to prevent memory leaks.
   * @public
   * @see {@link Mocha#dispose}
   * @param {boolean} cleanReferencesAfterRun
   * @return {Mocha} this
   * @chainable
   */
  Mocha.prototype.cleanReferencesAfterRun = function (cleanReferencesAfterRun) {
    this._cleanReferencesAfterRun = cleanReferencesAfterRun !== false;
    return this;
  };

  /**
   * Manually dispose this mocha instance. Mark this instance as `disposed` and unable to run more tests.
   * It also removes function references to tests functions and hooks, so variables trapped in closures can be cleaned by the garbage collector.
   * @public
   */
  Mocha.prototype.dispose = function () {
    if (this._state === mochaStates.RUNNING) {
      throw createMochaInstanceAlreadyRunningError(
        'Cannot dispose while the mocha instance is still running tests.'
      );
    }
    this.unloadFiles();
    this._previousRunner && this._previousRunner.dispose();
    this.suite.dispose();
    this._state = mochaStates.DISPOSED;
  };

  /**
   * 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;
  };

  /**
   * 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 compatibility, 'globals' is an alias of 'global'
  Mocha.prototype.globals = Mocha.prototype.global;

  /**
   * 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;
  };

  /**
   * 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;
  };

  /**
   * 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)
   * @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 (retry) {
    this.suite.retries(retry);
    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;
  };

  /**
   * Forces all tests to either accept a `done` callback or return a promise.
   *
   * @public
   * @see [CLI option](../#-async-only-a)
   * @param {boolean} [asyncOnly=true] - Whether 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 async 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;
  };

  /**
   * Enables or disables running tests in dry-run mode.
   *
   * @public
   * @see [CLI option](../#-dry-run)
   * @param {boolean} [dryRun=true] - Whether to activate dry-run mode.
   * @return {Mocha} this
   * @chainable
   */
  Mocha.prototype.dryRun = function (dryRun) {
    this.options.dryRun = dryRun !== false;
    return this;
  };

  /**
   * Fails test run if no tests encountered with exit-code 1.
   *
   * @public
   * @see [CLI option](../#-fail-zero)
   * @param {boolean} [failZero=true] - Whether to fail test run.
   * @return {Mocha} this
   * @chainable
   */
  Mocha.prototype.failZero = function (failZero) {
    this.options.failZero = failZero !== false;
    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;
  };

  /**
   * Throws an error if mocha is in the wrong state to be able to transition to a "running" state.
   * @private
   */
  Mocha.prototype._guardRunningStateTransition = function () {
    if (this._state === mochaStates.RUNNING) {
      throw createMochaInstanceAlreadyRunningError(
        'Mocha instance is currently running tests, cannot start a next test run until this one is done',
        this
      );
    }
    if (
      this._state === mochaStates.DISPOSED ||
      this._state === mochaStates.REFERENCES_CLEANED
    ) {
      throw createMochaInstanceAlreadyDisposedError(
        'Mocha instance is already disposed, cannot start a new test run. Please create a new mocha instance. Be sure to set disable `cleanReferencesAfterRun` when you want to reuse the same mocha instance for multiple test runs.',
        this._cleanReferencesAfterRun,
        this
      );
    }
  };

  /**
   * Mocha version as specified by "package.json".
   *
   * @name Mocha#version
   * @type string
   * @readonly
   */
  Object.defineProperty(Mocha.prototype, 'version', {
    value: require$$17.version,
    configurable: false,
    enumerable: true,
    writable: false
  });

  /**
   * Callback to be invoked when test execution is complete.
   *
   * @private
   * @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) {
    this._guardRunningStateTransition();
    this._state = mochaStates.RUNNING;
    if (this._previousRunner) {
      this._previousRunner.dispose();
      this.suite.reset();
    }
    if (this.files.length && !this._lazyLoadFiles) {
      this.loadFiles();
    }
    var suite = this.suite;
    var options = this.options;
    options.files = this.files;
    const runner = new this._runnerClass(suite, {
      cleanReferencesAfterRun: this._cleanReferencesAfterRun,
      delay: options.delay,
      dryRun: options.dryRun,
      failZero: options.failZero
    });
    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.color !== undefined) {
      exports.reporters.Base.useColors = options.color;
    }
    exports.reporters.Base.inlineDiffs = options.inlineDiffs;
    exports.reporters.Base.hideDiff = !options.diff;

    const done = failures => {
      this._previousRunner = runner;
      this._state = this._cleanReferencesAfterRun
        ? mochaStates.REFERENCES_CLEANED
        : mochaStates.INIT;
      fn = fn || utils.noop;
      if (typeof reporter.done === 'function') {
        reporter.done(failures, fn);
      } else {
        fn(failures);
      }
    };

    const runAsync = async runner => {
      const context =
        this.options.enableGlobalSetup && this.hasGlobalSetupFixtures()
          ? await this.runGlobalSetup(runner)
          : {};
      const failureCount = await runner.runAsync({
        files: this.files,
        options
      });
      if (this.options.enableGlobalTeardown && this.hasGlobalTeardownFixtures()) {
        await this.runGlobalTeardown(runner, {context});
      }
      return failureCount;
    };

    // no "catch" here is intentional. errors coming out of
    // Runner#run are considered uncaught/unhandled and caught
    // by the `process` event listeners.
    // also: returning anything other than `runner` would be a breaking
    // change
    runAsync(runner).then(done);

    return runner;
  };

  /**
   * Assigns hooks to the root suite
   * @param {MochaRootHookObject} [hooks] - Hooks to assign to root suite
   * @chainable
   */
  Mocha.prototype.rootHooks = function rootHooks({
    beforeAll = [],
    beforeEach = [],
    afterAll = [],
    afterEach = []
  } = {}) {
    beforeAll = utils.castArray(beforeAll);
    beforeEach = utils.castArray(beforeEach);
    afterAll = utils.castArray(afterAll);
    afterEach = utils.castArray(afterEach);
    beforeAll.forEach(hook => {
      this.suite.beforeAll(hook);
    });
    beforeEach.forEach(hook => {
      this.suite.beforeEach(hook);
    });
    afterAll.forEach(hook => {
      this.suite.afterAll(hook);
    });
    afterEach.forEach(hook => {
      this.suite.afterEach(hook);
    });
    return this;
  };

  /**
   * Toggles parallel mode.
   *
   * Must be run before calling {@link Mocha#run}. Changes the `Runner` class to
   * use; also enables lazy file loading if not already done so.
   *
   * Warning: when passed `false` and lazy loading has been enabled _via any means_ (including calling `parallelMode(true)`), this method will _not_ disable lazy loading. Lazy loading is a prerequisite for parallel
   * mode, but parallel mode is _not_ a prerequisite for lazy loading!
   * @param {boolean} [enable] - If `true`, enable; otherwise disable.
   * @throws If run in browser
   * @throws If Mocha not in `INIT` state
   * @returns {Mocha}
   * @chainable
   * @public
   */
  Mocha.prototype.parallelMode = function parallelMode(enable = true) {
    if (utils.isBrowser()) {
      throw createUnsupportedError('parallel mode is only supported in Node.js');
    }
    const parallel = Boolean(enable);
    if (
      parallel === this.options.parallel &&
      this._lazyLoadFiles &&
      this._runnerClass !== exports.Runner
    ) {
      return this;
    }
    if (this._state !== mochaStates.INIT) {
      throw createUnsupportedError(
        'cannot change parallel mode after having called run()'
      );
    }
    this.options.parallel = parallel;

    // swap Runner class
    this._runnerClass = parallel
      ? require$$18
      : exports.Runner;

    // lazyLoadFiles may have been set `true` otherwise (for ESM loading),
    // so keep `true` if so.
    return this.lazyLoadFiles(this._lazyLoadFiles || parallel);
  };

  /**
   * Disables implicit call to {@link Mocha#loadFiles} in {@link Mocha#run}. This
   * setting is used by watch mode, parallel mode, and for loading ESM files.
   * @todo This should throw if we've already loaded files; such behavior
   * necessitates adding a new state.
   * @param {boolean} [enable] - If `true`, disable eager loading of files in
   * {@link Mocha#run}
   * @chainable
   * @public
   */
  Mocha.prototype.lazyLoadFiles = function lazyLoadFiles(enable) {
    this._lazyLoadFiles = enable === true;
    debug('set lazy load to %s', enable);
    return this;
  };

  /**
   * Configures one or more global setup fixtures.
   *
   * If given no parameters, _unsets_ any previously-set fixtures.
   * @chainable
   * @public
   * @param {MochaGlobalFixture|MochaGlobalFixture[]} [setupFns] - Global setup fixture(s)
   * @returns {Mocha}
   */
  Mocha.prototype.globalSetup = function globalSetup(setupFns = []) {
    setupFns = utils.castArray(setupFns);
    this.options.globalSetup = setupFns;
    debug('configured %d global setup functions', setupFns.length);
    return this;
  };

  /**
   * Configures one or more global teardown fixtures.
   *
   * If given no parameters, _unsets_ any previously-set fixtures.
   * @chainable
   * @public
   * @param {MochaGlobalFixture|MochaGlobalFixture[]} [teardownFns] - Global teardown fixture(s)
   * @returns {Mocha}
   */
  Mocha.prototype.globalTeardown = function globalTeardown(teardownFns = []) {
    teardownFns = utils.castArray(teardownFns);
    this.options.globalTeardown = teardownFns;
    debug('configured %d global teardown functions', teardownFns.length);
    return this;
  };

  /**
   * Run any global setup fixtures sequentially, if any.
   *
   * This is _automatically called_ by {@link Mocha#run} _unless_ the `runGlobalSetup` option is `false`; see {@link Mocha#enableGlobalSetup}.
   *
   * The context object this function resolves with should be consumed by {@link Mocha#runGlobalTeardown}.
   * @param {object} [context] - Context object if already have one
   * @public
   * @returns {Promise<object>} Context object
   */
  Mocha.prototype.runGlobalSetup = async function runGlobalSetup(context = {}) {
    const {globalSetup} = this.options;
    if (globalSetup && globalSetup.length) {
      debug('run(): global setup starting');
      await this._runGlobalFixtures(globalSetup, context);
      debug('run(): global setup complete');
    }
    return context;
  };

  /**
   * Run any global teardown fixtures sequentially, if any.
   *
   * This is _automatically called_ by {@link Mocha#run} _unless_ the `runGlobalTeardown` option is `false`; see {@link Mocha#enableGlobalTeardown}.
   *
   * Should be called with context object returned by {@link Mocha#runGlobalSetup}, if applicable.
   * @param {object} [context] - Context object if already have one
   * @public
   * @returns {Promise<object>} Context object
   */
  Mocha.prototype.runGlobalTeardown = async function runGlobalTeardown(
    context = {}
  ) {
    const {globalTeardown} = this.options;
    if (globalTeardown && globalTeardown.length) {
      debug('run(): global teardown starting');
      await this._runGlobalFixtures(globalTeardown, context);
    }
    debug('run(): global teardown complete');
    return context;
  };

  /**
   * Run global fixtures sequentially with context `context`
   * @private
   * @param {MochaGlobalFixture[]} [fixtureFns] - Fixtures to run
   * @param {object} [context] - context object
   * @returns {Promise<object>} context object
   */
  Mocha.prototype._runGlobalFixtures = async function _runGlobalFixtures(
    fixtureFns = [],
    context = {}
  ) {
    for await (const fixtureFn of fixtureFns) {
      await fixtureFn.call(context);
    }
    return context;
  };

  /**
   * Toggle execution of any global setup fixture(s)
   *
   * @chainable
   * @public
   * @param {boolean } [enabled=true] - If `false`, do not run global setup fixture
   * @returns {Mocha}
   */
  Mocha.prototype.enableGlobalSetup = function enableGlobalSetup(enabled = true) {
    this.options.enableGlobalSetup = Boolean(enabled);
    return this;
  };

  /**
   * Toggle execution of any global teardown fixture(s)
   *
   * @chainable
   * @public
   * @param {boolean } [enabled=true] - If `false`, do not run global teardown fixture
   * @returns {Mocha}
   */
  Mocha.prototype.enableGlobalTeardown = function enableGlobalTeardown(
    enabled = true
  ) {
    this.options.enableGlobalTeardown = Boolean(enabled);
    return this;
  };

  /**
   * Returns `true` if one or more global setup fixtures have been supplied.
   * @public
   * @returns {boolean}
   */
  Mocha.prototype.hasGlobalSetupFixtures = function hasGlobalSetupFixtures() {
    return Boolean(this.options.globalSetup.length);
  };

  /**
   * Returns `true` if one or more global teardown fixtures have been supplied.
   * @public
   * @returns {boolean}
   */
  Mocha.prototype.hasGlobalTeardownFixtures =
    function hasGlobalTeardownFixtures() {
      return Boolean(this.options.globalTeardown.length);
    };

  /**
   * An alternative way to define root hooks that works with parallel runs.
   * @typedef {Object} MochaRootHookObject
   * @property {Function|Function[]} [beforeAll] - "Before all" hook(s)
   * @property {Function|Function[]} [beforeEach] - "Before each" hook(s)
   * @property {Function|Function[]} [afterAll] - "After all" hook(s)
   * @property {Function|Function[]} [afterEach] - "After each" hook(s)
   */

  /**
   * An function that returns a {@link MochaRootHookObject}, either sync or async.
     @callback MochaRootHookFunction
   * @returns {MochaRootHookObject|Promise<MochaRootHookObject>}
   */

  /**
   * A function that's invoked _once_ which is either sync or async.
   * Can be a "teardown" or "setup".  These will all share the same context.
   * @callback MochaGlobalFixture
   * @returns {void|Promise<void>}
   */

  /**
   * An object making up all necessary parts of a plugin loader and aggregator
   * @typedef {Object} PluginDefinition
   * @property {string} exportName - Named export to use
   * @property {string} [optionName] - Option name for Mocha constructor (use `exportName` if omitted)
   * @property {PluginValidator} [validate] - Validator function
   * @property {PluginFinalizer} [finalize] - Finalizer/aggregator function
   */

  /**
   * A (sync) function to assert a user-supplied plugin implementation is valid.
   *
   * Defined in a {@link PluginDefinition}.

   * @callback PluginValidator
   * @param {*} value - Value to check
   * @this {PluginDefinition}
   * @returns {void}
   */

  /**
   * A function to finalize plugins impls of a particular ilk
   * @callback PluginFinalizer
   * @param {Array<*>} impls - User-supplied implementations
   * @returns {Promise<*>|*}
   */
  }(mocha$1, mocha$1.exports));

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

  /**
   * Shim process.stdout.
   */

  process.stdout = browserStdout({label: false});

  var parseQuery = parseQuery$1;
  var highlightTags = highlightTags$1;
  var Mocha = mocha$1.exports;

  /**
   * Create a Mocha instance.
   *
   * @return {undefined}
   */

  var mocha = new Mocha({reporter: 'html'});

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

  var Date$1 = commonjsGlobal.Date;
  var setTimeout$1 = commonjsGlobal.setTimeout;
  commonjsGlobal.setInterval;
  commonjsGlobal.clearTimeout;
  commonjsGlobal.clearInterval;

  var uncaughtExceptionHandlers = [];

  var originalOnerrorHandler = commonjsGlobal.onerror;

  /**
   * Remove uncaughtException listener.
   * Revert to original onerror handler if previously defined.
   */

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

  /**
   * Implements listenerCount for 'uncaughtException'.
   */

  process.listenerCount = function (name) {
    if (name === 'uncaughtException') {
      return uncaughtExceptionHandlers.length;
    }
    return 0;
  };

  /**
   * Implements uncaughtException listener.
   */

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

  process.listeners = function (e) {
    if (e === 'uncaughtException') {
      return uncaughtExceptionHandlers;
    }
    return [];
  };

  // 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$1().getTime();
    while (immediateQueue.length && new Date$1().getTime() - immediateStart < 100) {
      immediateQueue.shift()();
    }
    if (immediateQueue.length) {
      immediateTimeout = setTimeout$1(timeslice, 0);
    } else {
      immediateTimeout = null;
    }
  }

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

  Mocha.Runner.immediately = function (callback) {
    immediateQueue.push(callback);
    if (!immediateTimeout) {
      immediateTimeout = setTimeout$1(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', commonjsGlobal, null, this);
    return this;
  };

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

  mocha.setup = function (opts) {
    if (typeof opts === 'string') {
      opts = {ui: opts};
    }
    if (opts.delay === true) {
      this.delay();
    }
    var self = this;
    Object.keys(opts)
      .filter(function (opt) {
        return opt !== 'delay';
      })
      .forEach(function (opt) {
        if (Object.prototype.hasOwnProperty.call(opts, opt)) {
          self[opt](opts[opt]);
        }
      });
    return this;
  };

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

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

    var query = parseQuery(commonjsGlobal.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 = commonjsGlobal.document;
      if (
        document &&
        document.getElementById('mocha') &&
        options.noHighlighting !== true
      ) {
        highlightTags('code');
      }
      if (fn) {
        fn(err);
      }
    });
  };

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

  Mocha.process = process;

  /**
   * Expose mocha.
   */
  commonjsGlobal.Mocha = Mocha;
  commonjsGlobal.mocha = mocha;

  // for bundlers: enable `import {describe, it} from 'mocha'`
  // `bdd` interface only
  // prettier-ignore
  [ 
    'describe', 'context', 'it', 'specify',
    'xdescribe', 'xcontext', 'xit', 'xspecify',
    'before', 'beforeEach', 'afterEach', 'after'
  ].forEach(function(key) {
    mocha[key] = commonjsGlobal[key];
  });

  var browserEntry = mocha;

  return browserEntry;

}));
//# sourceMappingURL=mocha.js.map