source: frontend/node_modules/workbox-window/src/utils/WorkboxEvent.ts

/*
  Copyright 2019 Google LLC

  Use of this source code is governed by an MIT-style
  license that can be found in the LICENSE file or at
  https://opensource.org/licenses/MIT.
*/

import {WorkboxEventTarget} from './WorkboxEventTarget.js';
import '../_version.js';

/**
 * A minimal `Event` subclass shim.
 * This doesn't *actually* subclass `Event` because not all browsers support
 * constructable `EventTarget`, and using a real `Event` will error.
 * @private
 */
export class WorkboxEvent<K extends keyof WorkboxEventMap> {
  target?: WorkboxEventTarget;
  sw?: ServiceWorker;
  originalEvent?: Event;
  isExternal?: boolean;

  constructor(
    public type: K,
    props: Omit<WorkboxEventMap[K], 'target' | 'type'>,
  ) {
    Object.assign(this, props);
  }
}

export interface WorkboxMessageEvent extends WorkboxEvent<'message'> {
  data: any;
  originalEvent: Event;
  ports: readonly MessagePort[];
}

export interface WorkboxLifecycleEvent
  extends WorkboxEvent<keyof WorkboxLifecycleEventMap> {
  isUpdate?: boolean;
}

export interface WorkboxLifecycleWaitingEvent extends WorkboxLifecycleEvent {
  wasWaitingBeforeRegister?: boolean;
}

export interface WorkboxLifecycleEventMap {
  installing: WorkboxLifecycleEvent;
  installed: WorkboxLifecycleEvent;
  waiting: WorkboxLifecycleWaitingEvent;
  activating: WorkboxLifecycleEvent;
  activated: WorkboxLifecycleEvent;
  controlling: WorkboxLifecycleEvent;
  redundant: WorkboxLifecycleEvent;
}

export interface WorkboxEventMap extends WorkboxLifecycleEventMap {
  message: WorkboxMessageEvent;
}