diff --git a/tsconfig.json b/tsconfig.json
index 9c2190d6ba..b2cb7376ef 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -18,7 +18,7 @@
     "experimentalDecorators": true,
     "emitDecoratorMetadata": true,
     "skipLibCheck": true,
-    "allowJs": true,
+    "allowJs": false,
     "esModuleInterop": true,
     "allowSyntheticDefaultImports": true,
     "traceResolution": false,