docker-login/dist/events.js

/******/ (() => { // webpackBootstrap
/******/ 	"use strict";
/******/ 	var __webpack_modules__ = ({

/***/ 906:
/***/ ((module) => {

// 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.

// Modified by the vm2 team to make this a standalone module to be loaded into the sandbox.



const host = fromhost;

const {
	Boolean,
  Error,
	String,
	Symbol
} = globalThis;

const ReflectApply = Reflect.apply;
const ReflectOwnKeys = Reflect.ownKeys;

const ErrorCaptureStackTrace = Error.captureStackTrace;

const NumberIsNaN = Number.isNaN;

const ObjectCreate = Object.create;
const ObjectDefineProperty = Object.defineProperty;
const ObjectDefineProperties = Object.defineProperties;
const ObjectGetPrototypeOf = Object.getPrototypeOf;

const SymbolFor = Symbol.for;

function uncurryThis(func) {
	return (thiz, ...args) => ReflectApply(func, thiz, args);
}

const ArrayPrototypeIndexOf = uncurryThis(Array.prototype.indexOf);
const ArrayPrototypeJoin = uncurryThis(Array.prototype.join);
const ArrayPrototypeSlice = uncurryThis(Array.prototype.slice);
const ArrayPrototypeSplice = uncurryThis(Array.prototype.splice);
const ArrayPrototypeUnshift = uncurryThis(Array.prototype.unshift);

const kRejection = SymbolFor('nodejs.rejection');

function inspect(obj) {
	return typeof obj === 'symbol' ? obj.toString() : `${obj}`;
}

function spliceOne(list, index) {
	for (; index + 1 < list.length; index++)
		list[index] = list[index + 1];
	list.pop();
}

function assert(what, message) {
	if (!what) throw new Error(message);
}

function E(key, msg, Base) {
	return function NodeError(...args) {
	  const error = new Base();
	  const message = ReflectApply(msg, error, args);
	  ObjectDefineProperties(error, {
		message: {
		  value: message,
		  enumerable: false,
		  writable: true,
		  configurable: true,
		},
		toString: {
		  value() {
			return `${this.name} [${key}]: ${this.message}`;
		  },
		  enumerable: false,
		  writable: true,
		  configurable: true,
		},
	  });
	  error.code = key;
	  return error;
	};
}


const ERR_INVALID_ARG_TYPE = E('ERR_INVALID_ARG_TYPE',
  (name, expected, actual) => {
    assert(typeof name === 'string', "'name' must be a string");
    if (!ArrayIsArray(expected)) {
      expected = [expected];
    }

    let msg = 'The ';
    if (StringPrototypeEndsWith(name, ' argument')) {
      // For cases like 'first argument'
      msg += `${name} `;
    } else {
      const type = StringPrototypeIncludes(name, '.') ? 'property' : 'argument';
      msg += `"${name}" ${type} `;
    }
    msg += 'must be ';

    const types = [];
    const instances = [];
    const other = [];

    for (const value of expected) {
      assert(typeof value === 'string',
             'All expected entries have to be of type string');
      if (ArrayPrototypeIncludes(kTypes, value)) {
        ArrayPrototypePush(types, StringPrototypeToLowerCase(value));
      } else if (RegExpPrototypeTest(classRegExp, value)) {
        ArrayPrototypePush(instances, value);
      } else {
        assert(value !== 'object',
               'The value "object" should be written as "Object"');
        ArrayPrototypePush(other, value);
      }
    }

    // Special handle `object` in case other instances are allowed to outline
    // the differences between each other.
    if (instances.length > 0) {
      const pos = ArrayPrototypeIndexOf(types, 'object');
      if (pos !== -1) {
        ArrayPrototypeSplice(types, pos, 1);
        ArrayPrototypePush(instances, 'Object');
      }
    }

    if (types.length > 0) {
      if (types.length > 2) {
        const last = ArrayPrototypePop(types);
        msg += `one of type ${ArrayPrototypeJoin(types, ', ')}, or ${last}`;
      } else if (types.length === 2) {
        msg += `one of type ${types[0]} or ${types[1]}`;
      } else {
        msg += `of type ${types[0]}`;
      }
      if (instances.length > 0 || other.length > 0)
        msg += ' or ';
    }

    if (instances.length > 0) {
      if (instances.length > 2) {
        const last = ArrayPrototypePop(instances);
        msg +=
          `an instance of ${ArrayPrototypeJoin(instances, ', ')}, or ${last}`;
      } else {
        msg += `an instance of ${instances[0]}`;
        if (instances.length === 2) {
          msg += ` or ${instances[1]}`;
        }
      }
      if (other.length > 0)
        msg += ' or ';
    }

    if (other.length > 0) {
      if (other.length > 2) {
        const last = ArrayPrototypePop(other);
        msg += `one of ${ArrayPrototypeJoin(other, ', ')}, or ${last}`;
      } else if (other.length === 2) {
        msg += `one of ${other[0]} or ${other[1]}`;
      } else {
        if (StringPrototypeToLowerCase(other[0]) !== other[0])
          msg += 'an ';
        msg += `${other[0]}`;
      }
    }

    if (actual == null) {
      msg += `. Received ${actual}`;
    } else if (typeof actual === 'function' && actual.name) {
      msg += `. Received function ${actual.name}`;
    } else if (typeof actual === 'object') {
      if (actual.constructor && actual.constructor.name) {
        msg += `. Received an instance of ${actual.constructor.name}`;
      } else {
        const inspected = inspect(actual, { depth: -1 });
        msg += `. Received ${inspected}`;
      }
    } else {
      let inspected = inspect(actual, { colors: false });
      if (inspected.length > 25)
        inspected = `${StringPrototypeSlice(inspected, 0, 25)}...`;
      msg += `. Received type ${typeof actual} (${inspected})`;
    }
    return msg;
  }, TypeError);

const ERR_INVALID_THIS = E('ERR_INVALID_THIS', s => `Value of "this" must be of type ${s}`, TypeError);

const ERR_OUT_OF_RANGE = E('ERR_OUT_OF_RANGE',
  (str, range, input, replaceDefaultBoolean = false) => {
    assert(range, 'Missing "range" argument');
    let msg = replaceDefaultBoolean ? str :
      `The value of "${str}" is out of range.`;
    const received = inspect(input);
    msg += ` It must be ${range}. Received ${received}`;
    return msg;
  }, RangeError);

const ERR_UNHANDLED_ERROR = E('ERR_UNHANDLED_ERROR',
  err => {
    const msg = 'Unhandled error.';
    if (err === undefined) return msg;
    return `${msg} (${err})`;
  }, Error);

function validateBoolean(value, name) {
  if (typeof value !== 'boolean')
    throw new ERR_INVALID_ARG_TYPE(name, 'boolean', value);
}

function validateFunction(value, name) {
  if (typeof value !== 'function')
    throw new ERR_INVALID_ARG_TYPE(name, 'Function', value);
}

function validateString(value, name) {
  if (typeof value !== 'string')
    throw new ERR_INVALID_ARG_TYPE(name, 'string', value);
}

function nc(cond, e) {
	return cond === undefined || cond === null ? e : cond;
}

function oc(base, key) {
	return base === undefined || base === null ? undefined : base[key];
}

const kCapture = Symbol('kCapture');
const kErrorMonitor = host.kErrorMonitor || Symbol('events.errorMonitor');
const kMaxEventTargetListeners = Symbol('events.maxEventTargetListeners');
const kMaxEventTargetListenersWarned =
  Symbol('events.maxEventTargetListenersWarned');

const kIsEventTarget = SymbolFor('nodejs.event_target');

function isEventTarget(obj) {
	return oc(oc(obj, 'constructor'), kIsEventTarget);
}

/**
 * Creates a new `EventEmitter` instance.
 * @param {{ captureRejections?: boolean; }} [opts]
 * @constructs {EventEmitter}
 */
function EventEmitter(opts) {
  EventEmitter.init.call(this, opts);
}
module.exports = EventEmitter;
if (host.once) module.exports.once = host.once;
if (host.on) module.exports.on = host.on;
if (host.getEventListeners) module.exports.getEventListeners = host.getEventListeners;
// Backwards-compat with node 0.10.x
EventEmitter.EventEmitter = EventEmitter;

EventEmitter.usingDomains = false;

EventEmitter.captureRejectionSymbol = kRejection;
ObjectDefineProperty(EventEmitter, 'captureRejections', {
  get() {
    return EventEmitter.prototype[kCapture];
  },
  set(value) {
    validateBoolean(value, 'EventEmitter.captureRejections');

    EventEmitter.prototype[kCapture] = value;
  },
  enumerable: true
});

if (host.EventEmitterReferencingAsyncResource) {
	const kAsyncResource = Symbol('kAsyncResource');
	const EventEmitterReferencingAsyncResource = host.EventEmitterReferencingAsyncResource;

	class EventEmitterAsyncResource extends EventEmitter {
		/**
		 * @param {{
		 *   name?: string,
		 *   triggerAsyncId?: number,
		 *   requireManualDestroy?: boolean,
		 * }} [options]
		 */
		constructor(options = undefined) {
			let name;
			if (typeof options === 'string') {
				name = options;
				options = undefined;
			} else {
				if (new.target === EventEmitterAsyncResource) {
					validateString(oc(options, 'name'), 'options.name');
				}
				name = oc(options, 'name') || new.target.name;
			}
			super(options);

			this[kAsyncResource] =
				new EventEmitterReferencingAsyncResource(this, name, options);
		}

		/**
		 * @param {symbol,string} event
		 * @param  {...any} args
		 * @returns {boolean}
		 */
		emit(event, ...args) {
			if (this[kAsyncResource] === undefined)
				throw new ERR_INVALID_THIS('EventEmitterAsyncResource');
			const { asyncResource } = this;
			ArrayPrototypeUnshift(args, super.emit, this, event);
			return ReflectApply(asyncResource.runInAsyncScope, asyncResource,
													args);
		}

		/**
		 * @returns {void}
		 */
		emitDestroy() {
			if (this[kAsyncResource] === undefined)
				throw new ERR_INVALID_THIS('EventEmitterAsyncResource');
			this.asyncResource.emitDestroy();
		}

		/**
		 * @type {number}
		 */
		get asyncId() {
			if (this[kAsyncResource] === undefined)
				throw new ERR_INVALID_THIS('EventEmitterAsyncResource');
			return this.asyncResource.asyncId();
		}

		/**
		 * @type {number}
		 */
		get triggerAsyncId() {
			if (this[kAsyncResource] === undefined)
				throw new ERR_INVALID_THIS('EventEmitterAsyncResource');
			return this.asyncResource.triggerAsyncId();
		}

		/**
		 * @type {EventEmitterReferencingAsyncResource}
		 */
		get asyncResource() {
			if (this[kAsyncResource] === undefined)
				throw new ERR_INVALID_THIS('EventEmitterAsyncResource');
			return this[kAsyncResource];
		}
	}
	EventEmitter.EventEmitterAsyncResource = EventEmitterAsyncResource;
}

EventEmitter.errorMonitor = kErrorMonitor;

// The default for captureRejections is false
ObjectDefineProperty(EventEmitter.prototype, kCapture, {
  value: false,
  writable: true,
  enumerable: false
});

EventEmitter.prototype._events = undefined;
EventEmitter.prototype._eventsCount = 0;
EventEmitter.prototype._maxListeners = undefined;

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

function checkListener(listener) {
  validateFunction(listener, 'listener');
}

ObjectDefineProperty(EventEmitter, 'defaultMaxListeners', {
  enumerable: true,
  get: function() {
    return defaultMaxListeners;
  },
  set: function(arg) {
    if (typeof arg !== 'number' || arg < 0 || NumberIsNaN(arg)) {
      throw new ERR_OUT_OF_RANGE('defaultMaxListeners',
                                 'a non-negative number',
                                 arg);
    }
    defaultMaxListeners = arg;
  }
});

ObjectDefineProperties(EventEmitter, {
  kMaxEventTargetListeners: {
    value: kMaxEventTargetListeners,
    enumerable: false,
    configurable: false,
    writable: false,
  },
  kMaxEventTargetListenersWarned: {
    value: kMaxEventTargetListenersWarned,
    enumerable: false,
    configurable: false,
    writable: false,
  }
});

/**
 * Sets the max listeners.
 * @param {number} n
 * @param {EventTarget[] | EventEmitter[]} [eventTargets]
 * @returns {void}
 */
EventEmitter.setMaxListeners =
  function(n = defaultMaxListeners, ...eventTargets) {
    if (typeof n !== 'number' || n < 0 || NumberIsNaN(n))
      throw new ERR_OUT_OF_RANGE('n', 'a non-negative number', n);
    if (eventTargets.length === 0) {
      defaultMaxListeners = n;
    } else {
      for (let i = 0; i < eventTargets.length; i++) {
        const target = eventTargets[i];
        if (isEventTarget(target)) {
          target[kMaxEventTargetListeners] = n;
          target[kMaxEventTargetListenersWarned] = false;
        } else if (typeof target.setMaxListeners === 'function') {
          target.setMaxListeners(n);
        } else {
          throw new ERR_INVALID_ARG_TYPE(
            'eventTargets',
            ['EventEmitter', 'EventTarget'],
            target);
        }
      }
    }
  };

// If you're updating this function definition, please also update any
// re-definitions, such as the one in the Domain module (lib/domain.js).
EventEmitter.init = function(opts) {

  if (this._events === undefined ||
      this._events === ObjectGetPrototypeOf(this)._events) {
    this._events = ObjectCreate(null);
    this._eventsCount = 0;
  }

  this._maxListeners = this._maxListeners || undefined;


  if (oc(opts, 'captureRejections')) {
    validateBoolean(opts.captureRejections, 'options.captureRejections');
    this[kCapture] = Boolean(opts.captureRejections);
  } else {
    // Assigning the kCapture property directly saves an expensive
    // prototype lookup in a very sensitive hot path.
    this[kCapture] = EventEmitter.prototype[kCapture];
  }
};

function addCatch(that, promise, type, args) {
  if (!that[kCapture]) {
    return;
  }

  // Handle Promises/A+ spec, then could be a getter
  // that throws on second use.
  try {
    const then = promise.then;

    if (typeof then === 'function') {
      then.call(promise, undefined, function(err) {
        // The callback is called with nextTick to avoid a follow-up
        // rejection from this promise.
        process.nextTick(emitUnhandledRejectionOrErr, that, err, type, args);
      });
    }
  } catch (err) {
    that.emit('error', err);
  }
}

function emitUnhandledRejectionOrErr(ee, err, type, args) {
  if (typeof ee[kRejection] === 'function') {
    ee[kRejection](err, type, ...args);
  } else {
    // We have to disable the capture rejections mechanism, otherwise
    // we might end up in an infinite loop.
    const prev = ee[kCapture];

    // If the error handler throws, it is not catchable and it
    // will end up in 'uncaughtException'. We restore the previous
    // value of kCapture in case the uncaughtException is present
    // and the exception is handled.
    try {
      ee[kCapture] = false;
      ee.emit('error', err);
    } finally {
      ee[kCapture] = prev;
    }
  }
}

/**
 * Increases the max listeners of the event emitter.
 * @param {number} n
 * @returns {EventEmitter}
 */
EventEmitter.prototype.setMaxListeners = function setMaxListeners(n) {
  if (typeof n !== 'number' || n < 0 || NumberIsNaN(n)) {
    throw new ERR_OUT_OF_RANGE('n', 'a non-negative number', n);
  }
  this._maxListeners = n;
  return this;
};

function _getMaxListeners(that) {
  if (that._maxListeners === undefined)
    return EventEmitter.defaultMaxListeners;
  return that._maxListeners;
}

/**
 * Returns the current max listener value for the event emitter.
 * @returns {number}
 */
EventEmitter.prototype.getMaxListeners = function getMaxListeners() {
  return _getMaxListeners(this);
};

/**
 * Synchronously calls each of the listeners registered
 * for the event.
 * @param {string | symbol} type
 * @param {...any} [args]
 * @returns {boolean}
 */
EventEmitter.prototype.emit = function emit(type, ...args) {
  let doError = (type === 'error');

  const events = this._events;
  if (events !== undefined) {
    if (doError && events[kErrorMonitor] !== undefined)
      this.emit(kErrorMonitor, ...args);
    doError = (doError && events.error === undefined);
  } else if (!doError)
    return false;

  // If there is no 'error' event listener then throw.
  if (doError) {
    let er;
    if (args.length > 0)
      er = args[0];
    if (er instanceof Error) {
      try {
        const capture = {};
        ErrorCaptureStackTrace(capture, EventEmitter.prototype.emit);
      } catch (e) {}

      // Note: The comments on the `throw` lines are intentional, they show
      // up in Node's output if this results in an unhandled exception.
      throw er; // Unhandled 'error' event
    }

    let stringifiedEr;
    try {
      stringifiedEr = inspect(er);
    } catch (e) {
      stringifiedEr = er;
    }

    // At least give some kind of context to the user
    const err = new ERR_UNHANDLED_ERROR(stringifiedEr);
    err.context = er;
    throw err; // Unhandled 'error' event
  }

  const handler = events[type];

  if (handler === undefined)
    return false;

  if (typeof handler === 'function') {
    const result = handler.apply(this, args);

    // We check if result is undefined first because that
    // is the most common case so we do not pay any perf
    // penalty
    if (result !== undefined && result !== null) {
      addCatch(this, result, type, args);
    }
  } else {
    const len = handler.length;
    const listeners = arrayClone(handler);
    for (let i = 0; i < len; ++i) {
      const result = listeners[i].apply(this, args);

      // We check if result is undefined first because that
      // is the most common case so we do not pay any perf
      // penalty.
      // This code is duplicated because extracting it away
      // would make it non-inlineable.
      if (result !== undefined && result !== null) {
        addCatch(this, result, type, args);
      }
    }
  }

  return true;
};

function _addListener(target, type, listener, prepend) {
  let m;
  let events;
  let existing;

  checkListener(listener);

  events = target._events;
  if (events === undefined) {
    events = target._events = ObjectCreate(null);
    target._eventsCount = 0;
  } else {
    // To avoid recursion in the case that type === "newListener"! Before
    // adding it to the listeners, first emit "newListener".
    if (events.newListener !== undefined) {
      target.emit('newListener', type,
                  nc(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 === undefined) {
    // Optimize the case of one listener. Don't need the extra array object.
    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];
      // If we've already got an array, just append.
    } else if (prepend) {
      existing.unshift(listener);
    } else {
      existing.push(listener);
    }

    // Check for listener leak
    m = _getMaxListeners(target);
    if (m > 0 && existing.length > m && !existing.warned) {
      existing.warned = true;
      // No error code for this since it is a Warning
      // eslint-disable-next-line no-restricted-syntax
      const w = new Error('Possible EventEmitter memory leak detected. ' +
                          `${existing.length} ${String(type)} listeners ` +
                          `added to ${inspect(target, { depth: -1 })}. Use ` +
                          'emitter.setMaxListeners() to increase limit');
      w.name = 'MaxListenersExceededWarning';
      w.emitter = target;
      w.type = type;
      w.count = existing.length;
      process.emitWarning(w);
    }
  }

  return target;
}

/**
 * Adds a listener to the event emitter.
 * @param {string | symbol} type
 * @param {Function} listener
 * @returns {EventEmitter}
 */
EventEmitter.prototype.addListener = function addListener(type, listener) {
  return _addListener(this, type, listener, false);
};

EventEmitter.prototype.on = EventEmitter.prototype.addListener;

/**
 * Adds the `listener` function to the beginning of
 * the listeners array.
 * @param {string | symbol} type
 * @param {Function} listener
 * @returns {EventEmitter}
 */
EventEmitter.prototype.prependListener =
    function prependListener(type, listener) {
      return _addListener(this, type, listener, true);
    };

function onceWrapper() {
  if (!this.fired) {
    this.target.removeListener(this.type, this.wrapFn);
    this.fired = true;
    if (arguments.length === 0)
      return this.listener.call(this.target);
    return this.listener.apply(this.target, arguments);
  }
}

function _onceWrap(target, type, listener) {
  const state = { fired: false, wrapFn: undefined, target, type, listener };
  const wrapped = onceWrapper.bind(state);
  wrapped.listener = listener;
  state.wrapFn = wrapped;
  return wrapped;
}

/**
 * Adds a one-time `listener` function to the event emitter.
 * @param {string | symbol} type
 * @param {Function} listener
 * @returns {EventEmitter}
 */
EventEmitter.prototype.once = function once(type, listener) {
  checkListener(listener);

  this.on(type, _onceWrap(this, type, listener));
  return this;
};

/**
 * Adds a one-time `listener` function to the beginning of
 * the listeners array.
 * @param {string | symbol} type
 * @param {Function} listener
 * @returns {EventEmitter}
 */
EventEmitter.prototype.prependOnceListener =
    function prependOnceListener(type, listener) {
      checkListener(listener);

      this.prependListener(type, _onceWrap(this, type, listener));
      return this;
    };


/**
 * Removes the specified `listener` from the listeners array.
 * @param {string | symbol} type
 * @param {Function} listener
 * @returns {EventEmitter}
 */
EventEmitter.prototype.removeListener =
    function removeListener(type, listener) {
      checkListener(listener);

      const events = this._events;
      if (events === undefined)
        return this;

      const list = events[type];
      if (list === undefined)
        return this;

      if (list === listener || list.listener === listener) {
        if (--this._eventsCount === 0)
          this._events = ObjectCreate(null);
        else {
          delete events[type];
          if (events.removeListener)
            this.emit('removeListener', type, list.listener || listener);
        }
      } else if (typeof list !== 'function') {
        let position = -1;

        for (let i = list.length - 1; i >= 0; i--) {
          if (list[i] === listener || list[i].listener === listener) {
            position = i;
            break;
          }
        }

        if (position < 0)
          return this;

        if (position === 0)
          list.shift();
        else {
          spliceOne(list, position);
        }

        if (list.length === 1)
          events[type] = list[0];

        if (events.removeListener !== undefined)
          this.emit('removeListener', type, listener);
      }

      return this;
    };

EventEmitter.prototype.off = EventEmitter.prototype.removeListener;

/**
 * Removes all listeners from the event emitter. (Only
 * removes listeners for a specific event name if specified
 * as `type`).
 * @param {string | symbol} [type]
 * @returns {EventEmitter}
 */
EventEmitter.prototype.removeAllListeners =
    function removeAllListeners(type) {
      const events = this._events;
      if (events === undefined)
        return this;

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

      // Emit removeListener for all listeners on all events
      if (arguments.length === 0) {
        for (const key of ReflectOwnKeys(events)) {
          if (key === 'removeListener') continue;
          this.removeAllListeners(key);
        }
        this.removeAllListeners('removeListener');
        this._events = ObjectCreate(null);
        this._eventsCount = 0;
        return this;
      }

      const listeners = events[type];

      if (typeof listeners === 'function') {
        this.removeListener(type, listeners);
      } else if (listeners !== undefined) {
        // LIFO order
        for (let i = listeners.length - 1; i >= 0; i--) {
          this.removeListener(type, listeners[i]);
        }
      }

      return this;
    };

function _listeners(target, type, unwrap) {
  const events = target._events;

  if (events === undefined)
    return [];

  const evlistener = events[type];
  if (evlistener === undefined)
    return [];

  if (typeof evlistener === 'function')
    return unwrap ? [evlistener.listener || evlistener] : [evlistener];

  return unwrap ?
    unwrapListeners(evlistener) : arrayClone(evlistener);
}

/**
 * Returns a copy of the array of listeners for the event name
 * specified as `type`.
 * @param {string | symbol} type
 * @returns {Function[]}
 */
EventEmitter.prototype.listeners = function listeners(type) {
  return _listeners(this, type, true);
};

/**
 * Returns a copy of the array of listeners and wrappers for
 * the event name specified as `type`.
 * @param {string | symbol} type
 * @returns {Function[]}
 */
EventEmitter.prototype.rawListeners = function rawListeners(type) {
  return _listeners(this, type, false);
};

/**
 * Returns the number of listeners listening to the event name
 * specified as `type`.
 * @deprecated since v3.2.0
 * @param {EventEmitter} emitter
 * @param {string | symbol} type
 * @returns {number}
 */
EventEmitter.listenerCount = function(emitter, type) {
  if (typeof emitter.listenerCount === 'function') {
    return emitter.listenerCount(type);
  }
  return emitter.listenerCount(type);
};

EventEmitter.prototype.listenerCount = listenerCount;

/**
 * Returns the number of listeners listening to event name
 * specified as `type`.
 * @param {string | symbol} type
 * @returns {number}
 */
function listenerCount(type) {
  const events = this._events;

  if (events !== undefined) {
    const evlistener = events[type];

    if (typeof evlistener === 'function') {
      return 1;
    } else if (evlistener !== undefined) {
      return evlistener.length;
    }
  }

  return 0;
}

/**
 * Returns an array listing the events for which
 * the emitter has registered listeners.
 * @returns {any[]}
 */
EventEmitter.prototype.eventNames = function eventNames() {
  return this._eventsCount > 0 ? ReflectOwnKeys(this._events) : [];
};

function arrayClone(arr) {
  // At least since V8 8.3, this implementation is faster than the previous
  // which always used a simple for-loop
  switch (arr.length) {
    case 2: return [arr[0], arr[1]];
    case 3: return [arr[0], arr[1], arr[2]];
    case 4: return [arr[0], arr[1], arr[2], arr[3]];
    case 5: return [arr[0], arr[1], arr[2], arr[3], arr[4]];
    case 6: return [arr[0], arr[1], arr[2], arr[3], arr[4], arr[5]];
  }
  return ArrayPrototypeSlice(arr);
}

function unwrapListeners(arr) {
  const ret = arrayClone(arr);
  for (let i = 0; i < ret.length; ++i) {
    const orig = ret[i].listener;
    if (typeof orig === 'function')
      ret[i] = orig;
  }
  return ret;
}


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/******/ 	module.exports = __webpack_exports__;
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