diff --git a/tsconfig.app.json b/tsconfig.app.json
index c0f2d86..99e36a8 100644
--- a/tsconfig.app.json
+++ b/tsconfig.app.json
@@ -13,6 +13,7 @@
 
     // `vue-tsc --build` produces a .tsbuildinfo file for incremental type-checking.
     // Specified here to keep it out of the root directory.
-    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo"
+    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo",
+    "allowJs": true
   }
 }