diff --git a/tsconfig.json b/tsconfig.json
index 04b0caa9..5a1d9159 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -20,7 +20,7 @@
     // "removeComments": true,                /* Do not emit comments to output. */
     "noEmit": true /* Do not emit outputs. */,
     // "importHelpers": true,                 /* Import emit helpers from 'tslib'. */
-    // "downlevelIteration": true,            /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
+    "downlevelIteration": true /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */,
     // "isolatedModules": true,               /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
 
     /* Strict Type-Checking Options */