v1.0 with SW PWA enabled

frontend/node_modules/workbox-strategies/NetworkOnly.js

@@ -0,0 +1,98 @@
+/*
+  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 { logger } from 'workbox-core/_private/logger.js';
+import { timeout } from 'workbox-core/_private/timeout.js';
+import { WorkboxError } from 'workbox-core/_private/WorkboxError.js';
+import { Strategy } from './Strategy.js';
+import { messages } from './utils/messages.js';
+import './_version.js';
+/**
+ * An implementation of a
+ * [network-only](https://developer.chrome.com/docs/workbox/caching-strategies-overview/#network-only)
+ * request strategy.
+ *
+ * This class is useful if you want to take advantage of any
+ * [Workbox plugins](https://developer.chrome.com/docs/workbox/using-plugins/).
+ *
+ * If the network request fails, this will throw a `WorkboxError` exception.
+ *
+ * @extends workbox-strategies.Strategy
+ * @memberof workbox-strategies
+ */
+class NetworkOnly extends Strategy {
+    /**
+     * @param {Object} [options]
+     * @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 [non-navigation](https://github.com/GoogleChrome/workbox/issues/1796)
+     * `fetch()` requests made by this strategy.
+     * @param {number} [options.networkTimeoutSeconds] If set, any network requests
+     * that fail to respond within the timeout will result in a network error.
+     */
+    constructor(options = {}) {
+        super(options);
+        this._networkTimeoutSeconds = options.networkTimeoutSeconds || 0;
+    }
+    /**
+     * @private
+     * @param {Request|string} request A request to run this strategy for.
+     * @param {workbox-strategies.StrategyHandler} handler The event that
+     *     triggered the request.
+     * @return {Promise<Response>}
+     */
+    async _handle(request, handler) {
+        if (process.env.NODE_ENV !== 'production') {
+            assert.isInstance(request, Request, {
+                moduleName: 'workbox-strategies',
+                className: this.constructor.name,
+                funcName: '_handle',
+                paramName: 'request',
+            });
+        }
+        let error = undefined;
+        let response;
+        try {
+            const promises = [
+                handler.fetch(request),
+            ];
+            if (this._networkTimeoutSeconds) {
+                const timeoutPromise = timeout(this._networkTimeoutSeconds * 1000);
+                promises.push(timeoutPromise);
+            }
+            response = await Promise.race(promises);
+            if (!response) {
+                throw new Error(`Timed out the network response after ` +
+                    `${this._networkTimeoutSeconds} seconds.`);
+            }
+        }
+        catch (err) {
+            if (err instanceof Error) {
+                error = err;
+            }
+        }
+        if (process.env.NODE_ENV !== 'production') {
+            logger.groupCollapsed(messages.strategyStart(this.constructor.name, 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 };