added caching

Author: lucacasonato

scripts/webpack.client.config.js

@@ -67,7 +67,36 @@ module.exports = (options = {}) => merge(
       ]
     }),
 	].concat(prod ? [
-    new GenerateSW(),
+    new GenerateSW({
+      runtimeCaching: [{
+        urlPattern: "",
+        handler: 'StaleWhileRevalidate',
+        options: {
+          cacheName: 'code-server',
+          expiration: {
+            maxAgeSeconds: 86400,
+          },
+          cacheableResponse: {
+            statuses: [0, 200],
+          },
+        },
+      }
+      // Network first caching is also possible.
+      /*{
+        urlPattern: "",
+        handler: 'NetworkFirst',
+        options: {
+          networkTimeoutSeconds: 4,
+          cacheName: 'code-server',
+          expiration: {
+            maxAgeSeconds: 86400,
+          },
+          cacheableResponse: {
+            statuses: [0, 200],
+          },
+        },
+      }*/]    
+    }),
   ] : [
 		new webpack.HotModuleReplacementPlugin(),
 	]),