Function findEventTasks

packages/zone.js/lib/common/events.ts:907–938

(target: any, eventName: string)

}

export function findEventTasks(target: any, eventName: string): Task[] {
  if (!eventName) {
    const foundTasks: any[] = [];
    for (let prop in target) {
      const match = EVENT_NAME_SYMBOL_REGX.exec(prop);
      let evtName = match && match[1];
      if (evtName && (!eventName || evtName === eventName)) {
        const tasks: any = target[prop];
        if (tasks) {
          for (let i = 0; i < tasks.length; i++) {
            foundTasks.push(tasks[i]);
          }
        }
      }
    }
    return foundTasks;
  }
  let symbolEventName = zoneSymbolEventNames[eventName];
  if (!symbolEventName) {
    prepareEventNames(eventName);
    symbolEventName = zoneSymbolEventNames[eventName];
  }
  const captureFalseTasks = target[symbolEventName[FALSE_STR]];
  const captureTrueTasks = target[symbolEventName[TRUE_STR]];
  if (!captureFalseTasks) {
    return captureTrueTasks ? captureTrueTasks.slice() : [];
  } else {
    return captureTrueTasks
      ? captureFalseTasks.concat(captureTrueTasks)
      : captureFalseTasks.slice();
  }
}

export function patchEventPrototype(global: any, api: _ZonePrivate) {
  const Event = global['Event'];