WIP - add extractor, generate snippet_data

node_modules/workbox-strategies/NetworkOnly.mjs

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+/*
+ Copyright 2018 Google Inc. All Rights Reserved.
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+     http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+import {cacheNames} from 'workbox-core/_private/cacheNames.mjs';
+import {fetchWrapper} from 'workbox-core/_private/fetchWrapper.mjs';
+import {assert} from 'workbox-core/_private/assert.mjs';
+import {logger} from 'workbox-core/_private/logger.mjs';
+import messages from './utils/messages.mjs';
+import './_version.mjs';
+
+/**
+ * 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}.
+ *
+ * @memberof 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 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._cacheName = cacheNames.getRuntimeName(options.cacheName);
+    this._plugins = options.plugins || [];
+    this._fetchOptions = options.fetchOptions || null;
+  }
+
+  /**
+   * This method will perform a request strategy and follows an API that
+   * will work with the
+   * [Workbox Router]{@link workbox.routing.Router}.
+   *
+   * @param {Object} options
+   * @param {FetchEvent} options.event The fetch event to run this strategy
+   * against.
+   * @return {Promise<Response>}
+   */
+  async handle({event}) {
+    if (process.env.NODE_ENV !== 'production') {
+      assert.isInstance(event, FetchEvent, {
+        moduleName: 'workbox-strategies',
+        className: 'NetworkOnly',
+        funcName: 'handle',
+        paramName: 'event',
+      });
+    }
+
+    return this.makeRequest({
+      event,
+      request: event.request,
+    });
+  }
+
+  /**
+   * This method can be used to perform a make a standalone request outside the
+   * context of the [Workbox Router]{@link workbox.routing.Router}.
+   *
+   * See "[Advanced Recipes](https://developers.google.com/web/tools/workbox/guides/advanced-recipes#make-requests)"
+   * for more usage information.
+   *
+   * @param {Object} options
+   * @param {Request|string} options.request Either a
+   *     [`Request`]{@link https://developer.mozilla.org/en-US/docs/Web/API/Request}
+   *     object, or a string URL, corresponding to the request to be made.
+   * @param {FetchEvent} [options.event] If provided, `event.waitUntil()` will
+   *     be called automatically to extend the service worker's lifetime.
+   * @return {Promise<Response>}
+   */
+  async makeRequest({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 there was an error thrown, re-throw it to ensure the Routers
+    // catch handler is triggered.
+    if (error) {
+      throw error;
+    }
+
+    return response;
+  }
+}
+
+export {NetworkOnly};