diff --git a/src/tsconfig-base.json b/src/tsconfig-base.json
index 63849ca1322..c9c52f5e2e5 100644
--- a/src/tsconfig-base.json
+++ b/src/tsconfig-base.json
@@ -18,7 +18,7 @@
         "strictPropertyInitialization": true,
         "noUnusedLocals": true,
         "noUnusedParameters": true,
-        "noPropertyAccessFromIndexSignature": true
+        "noPropertyAccessFromIndexSignature": true,
 
         "skipLibCheck": true,