v1.0 with SW PWA enabled

frontend/node_modules/workbox-navigation-preload/src/_version.ts

@@ -0,0 +1,2 @@
+// @ts-ignore
+try{self['workbox:navigation-preload:7.4.0']&&_()}catch(e){}

frontend/node_modules/workbox-navigation-preload/src/disable.ts

@@ -0,0 +1,39 @@
+/*
+  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 {logger} from 'workbox-core/_private/logger.js';
+import {isSupported} from './isSupported.js';
+import './_version.js';
+
+// Give TypeScript the correct global.
+declare let self: ServiceWorkerGlobalScope;
+
+/**
+ * If the browser supports Navigation Preload, then this will disable it.
+ *
+ * @memberof workbox-navigation-preload
+ */
+function disable(): void {
+  if (isSupported()) {
+    self.addEventListener('activate', (event: ExtendableEvent) => {
+      event.waitUntil(
+        self.registration.navigationPreload.disable().then(() => {
+          if (process.env.NODE_ENV !== 'production') {
+            logger.log(`Navigation preload is disabled.`);
+          }
+        }),
+      );
+    });
+  } else {
+    if (process.env.NODE_ENV !== 'production') {
+      logger.log(`Navigation preload is not supported in this browser.`);
+    }
+  }
+}
+
+export {disable};

frontend/node_modules/workbox-navigation-preload/src/enable.ts

@@ -0,0 +1,51 @@
+/*
+  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 {logger} from 'workbox-core/_private/logger.js';
+import {isSupported} from './isSupported.js';
+import './_version.js';
+
+// Give TypeScript the correct global.
+declare let self: ServiceWorkerGlobalScope;
+
+/**
+ * If the browser supports Navigation Preload, then this will enable it.
+ *
+ * @param {string} [headerValue] Optionally, allows developers to
+ * [override](https://developers.google.com/web/updates/2017/02/navigation-preload#changing_the_header)
+ * the value of the `Service-Worker-Navigation-Preload` header which will be
+ * sent to the server when making the navigation request.
+ *
+ * @memberof workbox-navigation-preload
+ */
+function enable(headerValue?: string): void {
+  if (isSupported()) {
+    self.addEventListener('activate', (event: ExtendableEvent) => {
+      event.waitUntil(
+        self.registration.navigationPreload.enable().then(() => {
+          // Defaults to Service-Worker-Navigation-Preload: true if not set.
+          if (headerValue) {
+            void self.registration.navigationPreload.setHeaderValue(
+              headerValue,
+            );
+          }
+
+          if (process.env.NODE_ENV !== 'production') {
+            logger.log(`Navigation preload is enabled.`);
+          }
+        }),
+      );
+    });
+  } else {
+    if (process.env.NODE_ENV !== 'production') {
+      logger.log(`Navigation preload is not supported in this browser.`);
+    }
+  }
+}
+
+export {enable};

frontend/node_modules/workbox-navigation-preload/src/index.ts

@@ -0,0 +1,37 @@
+/*
+  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 {disable} from './disable.js';
+import {enable} from './enable.js';
+import {isSupported} from './isSupported.js';
+import './_version.js';
+
+// See https://github.com/GoogleChrome/workbox/issues/2946
+interface NavigationPreloadState {
+  enabled?: boolean;
+  headerValue?: string;
+}
+
+interface NavigationPreloadManager {
+  disable(): Promise<void>;
+  enable(): Promise<void>;
+  getState(): Promise<NavigationPreloadState>;
+  setHeaderValue(value: string): Promise<void>;
+}
+
+declare global {
+  interface ServiceWorkerRegistration {
+    readonly navigationPreload: NavigationPreloadManager;
+  }
+}
+
+/**
+ * @module workbox-navigation-preload
+ */
+
+export {disable, enable, isSupported};

frontend/node_modules/workbox-navigation-preload/src/isSupported.ts

@@ -0,0 +1,24 @@
+/*
+  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 './_version.js';
+
+// Give TypeScript the correct global.
+declare let self: ServiceWorkerGlobalScope;
+
+/**
+ * @return {boolean} Whether or not the current browser supports enabling
+ * navigation preload.
+ *
+ * @memberof workbox-navigation-preload
+ */
+function isSupported(): boolean {
+  return Boolean(self.registration && self.registration.navigationPreload);
+}
+
+export {isSupported};