diff --git a/tsconfig.json b/tsconfig.json
index 01ebc5a0d..c9e02df92 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -27,7 +27,7 @@
     // Enables experimental support for ES7 decorators.
     "experimentalDecorators": true,
     // Generates corresponding .map file.
-    "sourceMap": false,
+    "sourceMap": true,
     // Disallow inconsistently-cased references to the same file.
     "forceConsistentCasingInFileNames": true,
     // Allow json import