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- /*
- 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 { assert } from 'workbox-core/_private/assert.js';
- import { fetchWrapper } from 'workbox-core/_private/fetchWrapper.js';
- import { logger } from 'workbox-core/_private/logger.js';
- import { WorkboxError } from 'workbox-core/_private/WorkboxError.js';
- import { messages } from './utils/messages.js';
- import './_version.js';
- /**
- * An implementation of a
- * [network-only]{@link https://developers.google.com/web/fundamentals/instant-and-offline/offline-cookbook/#network-only}
- * request strategy.
- *
- * This class is useful if you want to take advantage of any
- * [Workbox plugins]{@link https://developers.google.com/web/tools/workbox/guides/using-plugins}.
- *
- * If the network request fails, this will throw a `WorkboxError` exception.
- *
- * @memberof module:workbox-strategies
- */
- class NetworkOnly {
- /**
- * @param {Object} options
- * @param {string} options.cacheName Cache name to store and retrieve
- * requests. Defaults to cache names provided by
- * [workbox-core]{@link module:workbox-core.cacheNames}.
- * @param {Array<Object>} options.plugins [Plugins]{@link https://developers.google.com/web/tools/workbox/guides/using-plugins}
- * to use in conjunction with this caching strategy.
- * @param {Object} options.fetchOptions Values passed along to the
- * [`init`](https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/fetch#Parameters)
- * of all fetch() requests made by this strategy.
- */
- constructor(options = {}) {
- this._plugins = options.plugins || [];
- this._fetchOptions = options.fetchOptions;
- }
- /**
- * This method will perform a request strategy and follows an API that
- * will work with the
- * [Workbox Router]{@link module:workbox-routing.Router}.
- *
- * @param {Object} options
- * @param {Request|string} options.request The request to run this strategy for.
- * @param {Event} [options.event] The event that triggered the request.
- * @return {Promise<Response>}
- */
- async handle({ event, request }) {
- if (typeof request === 'string') {
- request = new Request(request);
- }
- if (process.env.NODE_ENV !== 'production') {
- assert.isInstance(request, Request, {
- moduleName: 'workbox-strategies',
- className: 'NetworkOnly',
- funcName: 'handle',
- paramName: 'request',
- });
- }
- let error;
- let response;
- try {
- response = await fetchWrapper.fetch({
- request,
- event,
- fetchOptions: this._fetchOptions,
- plugins: this._plugins,
- });
- }
- catch (err) {
- error = err;
- }
- if (process.env.NODE_ENV !== 'production') {
- logger.groupCollapsed(messages.strategyStart('NetworkOnly', request));
- if (response) {
- logger.log(`Got response from network.`);
- }
- else {
- logger.log(`Unable to get a response from the network.`);
- }
- messages.printFinalResponse(response);
- logger.groupEnd();
- }
- if (!response) {
- throw new WorkboxError('no-response', { url: request.url, error });
- }
- return response;
- }
- }
- export { NetworkOnly };
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