diff --git a/packages/core/tsconfig.json b/packages/core/tsconfig.json
index 2b44908c79..2473650c43 100644
--- a/packages/core/tsconfig.json
+++ b/packages/core/tsconfig.json
@@ -1,6 +1,5 @@
 {
   "compilerOptions": {
-    "allowJs": true,
     "allowSyntheticDefaultImports": true,
     "allowUnreachableCode": false,
     "alwaysStrict": true,