Modern build, fixed WebSocket freezing on invalid URLs

components/realtime/websocket.vue

@@ -147,7 +147,9 @@ export default {
       }
     },
     disconnect() {
-      this.socket.close()
+      if (this.socket) {
+        this.socket.close()
+      }
     },
     handleError(error) {
       this.disconnect()

package.json

@@ -11,7 +11,7 @@
     "build": "nuxt build",
     "start": "nuxt start",
     "pregenerate": "node build.js",
-    "generate": "nuxt generate",
+    "generate": "nuxt generate --modern",
     "pretty-quick": "pretty-quick --staged --pattern \"**/*.*(html|js|json|vue)\"",
     "test": "jest"
   },