| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051 | /*  Copyright 2018 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 { dontWaitFor } from 'workbox-core/_private/dontWaitFor.js';import { BroadcastCacheUpdate, } from './BroadcastCacheUpdate.js';import './_version.js';/** * This plugin will automatically broadcast a message whenever a cached response * is updated. * * @memberof workbox-broadcast-update */class BroadcastUpdatePlugin {    /**     * Construct a {@link workbox-broadcast-update.BroadcastUpdate} instance with     * the passed options and calls its `notifyIfUpdated` method whenever the     * plugin's `cacheDidUpdate` callback is invoked.     *     * @param {Object} [options]     * @param {Array<string>} [options.headersToCheck=['content-length', 'etag', 'last-modified']]     *     A list of headers that will be used to determine whether the responses     *     differ.     * @param {string} [options.generatePayload] A function whose return value     *     will be used as the `payload` field in any cache update messages sent     *     to the window clients.     */    constructor(options) {        /**         * A "lifecycle" callback that will be triggered automatically by the         * `workbox-sw` and `workbox-runtime-caching` handlers when an entry is         * added to a cache.         *         * @private         * @param {Object} options The input object to this function.         * @param {string} options.cacheName Name of the cache being updated.         * @param {Response} [options.oldResponse] The previous cached value, if any.         * @param {Response} options.newResponse The new value in the cache.         * @param {Request} options.request The request that triggered the update.         * @param {Request} options.event The event that triggered the update.         */        this.cacheDidUpdate = async (options) => {            dontWaitFor(this._broadcastUpdate.notifyIfUpdated(options));        };        this._broadcastUpdate = new BroadcastCacheUpdate(options);    }}export { BroadcastUpdatePlugin };
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