@react-native-firebase/app/dist/module/internal/web/memidb/lib/FakeEventTarget.js

A well tested, feature rich Firebase implementation for React Native, supporting iOS & Android. Individual module support for Admob, Analytics, Auth, Crash Reporting, Cloud Firestore, Database, Dynamic Links, Functions, Messaging (FCM), Remote Config, Sto

"use strict";

import { InvalidStateError } from './errors.js';
const stopped = (event, listener) => {
  return event.immediatePropagationStopped || event.eventPhase === event.CAPTURING_PHASE && listener.capture === false || event.eventPhase === event.BUBBLING_PHASE && listener.capture === true;
};

// http://www.w3.org/TR/dom/#concept-event-listener-invoke
const invokeEventListeners = (event, obj) => {
  event.currentTarget = obj;

  // The callback might cause obj.listeners to mutate as we traverse it.
  // Take a copy of the array so that nothing sneaks in and we don't lose
  // our place.
  for (const listener of obj.listeners.slice()) {
    if (event.type !== listener.type || stopped(event, listener)) {
      continue;
    }

    // @ts-ignore
    listener.callback.call(event.currentTarget, event);
  }
  const typeToProp = {
    abort: 'onabort',
    blocked: 'onblocked',
    complete: 'oncomplete',
    error: 'onerror',
    success: 'onsuccess',
    upgradeneeded: 'onupgradeneeded',
    versionchange: 'onversionchange'
  };
  const prop = typeToProp[event.type];
  if (prop === undefined) {
    throw new Error(`Unknown event type: "${event.type}"`);
  }
  const callback = event.currentTarget[prop];
  if (callback) {
    const listener = {
      callback,
      capture: false,
      type: event.type
    };
    if (!stopped(event, listener)) {
      // @ts-ignore
      listener.callback.call(event.currentTarget, event);
    }
  }
};
class FakeEventTarget {
  listeners = [];

  // These will be overridden in individual subclasses and made not readonly

  addEventListener(type, callback, capture = false) {
    this.listeners.push({
      callback,
      capture,
      type
    });
  }
  removeEventListener(type, callback, capture = false) {
    const i = this.listeners.findIndex(listener => {
      return listener.type === type && listener.callback === callback && listener.capture === capture;
    });
    this.listeners.splice(i, 1);
  }

  // http://www.w3.org/TR/dom/#dispatching-events
  dispatchEvent(event) {
    if (event.dispatched || !event.initialized) {
      throw new InvalidStateError('The object is in an invalid state.');
    }
    event.isTrusted = false;
    event.dispatched = true;
    event.target = this;
    // NOT SURE WHEN THIS SHOULD BE SET        event.eventPath = [];

    event.eventPhase = event.CAPTURING_PHASE;
    for (const obj of event.eventPath) {
      if (!event.propagationStopped) {
        invokeEventListeners(event, obj);
      }
    }
    event.eventPhase = event.AT_TARGET;
    if (!event.propagationStopped) {
      invokeEventListeners(event, event.target);
    }
    if (event.bubbles) {
      event.eventPath.reverse();
      event.eventPhase = event.BUBBLING_PHASE;
      for (const obj of event.eventPath) {
        if (!event.propagationStopped) {
          invokeEventListeners(event, obj);
        }
      }
    }
    event.dispatched = false;
    event.eventPhase = event.NONE;
    event.currentTarget = null;
    if (event.canceled) {
      return false;
    }
    return true;
  }
}
export default FakeEventTarget;
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