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90 lines
3.0 KiB
90 lines
3.0 KiB
/*
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Copyright 2018 Google LLC
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Use of this source code is governed by an MIT-style
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license that can be found in the LICENSE file or at
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https://opensource.org/licenses/MIT.
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*/
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import {assert} from 'workbox-core/_private/assert.mjs';
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import {BroadcastCacheUpdate} from './BroadcastCacheUpdate.mjs';
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import './_version.mjs';
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/**
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* This plugin will automatically broadcast a message whenever a cached response
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* is updated.
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*
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* @memberof workbox.broadcastUpdate
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*/
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class Plugin {
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/**
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* Construct a BroadcastCacheUpdate instance with the passed options and
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* calls its `notifyIfUpdated()` method whenever the plugin's
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* `cacheDidUpdate` callback is invoked.
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*
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* @param {Object} options
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* @param {Array<string>}
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* [options.headersToCheck=['content-length', 'etag', 'last-modified']]
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* A list of headers that will be used to determine whether the responses
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* differ.
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* @param {string} [options.channelName='workbox'] The name that will be used
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*. when creating the `BroadcastChannel`, which defaults to 'workbox' (the
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* channel name used by the `workbox-window` package).
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* @param {string} [options.deferNoticationTimeout=10000] The amount of time
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* to wait for a ready message from the window on navigation requests
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* before sending the update.
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*/
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constructor(options) {
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this._broadcastUpdate = new BroadcastCacheUpdate(options);
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}
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/**
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* A "lifecycle" callback that will be triggered automatically by the
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* `workbox-sw` and `workbox-runtime-caching` handlers when an entry is
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* added to a cache.
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*
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* @private
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* @param {Object} options The input object to this function.
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* @param {string} options.cacheName Name of the cache being updated.
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* @param {Response} [options.oldResponse] The previous cached value, if any.
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* @param {Response} options.newResponse The new value in the cache.
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* @param {Request} options.request The request that triggered the udpate.
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* @param {Request} [options.event] The event that triggered the update.
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*/
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cacheDidUpdate({cacheName, oldResponse, newResponse, request, event}) {
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if (process.env.NODE_ENV !== 'production') {
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assert.isType(cacheName, 'string', {
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moduleName: 'workbox-broadcast-update',
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className: 'Plugin',
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funcName: 'cacheDidUpdate',
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paramName: 'cacheName',
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});
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assert.isInstance(newResponse, Response, {
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moduleName: 'workbox-broadcast-update',
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className: 'Plugin',
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funcName: 'cacheDidUpdate',
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paramName: 'newResponse',
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});
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assert.isInstance(request, Request, {
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moduleName: 'workbox-broadcast-update',
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className: 'Plugin',
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funcName: 'cacheDidUpdate',
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paramName: 'request',
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});
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}
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if (!oldResponse) {
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// Without a two responses there is nothing to compare.
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return;
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}
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this._broadcastUpdate.notifyIfUpdated({
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cacheName,
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oldResponse,
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newResponse,
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event,
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url: request.url,
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});
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}
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}
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export {Plugin};
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