fix a lack of counter validation on MAX_SAFE_INTEGER in Array.fromAsync polyfill

zloirock · zloirock · commit b4d723fbb277 · 2026-03-04T09:42:07.000+02:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -16,6 +16,7 @@
 - Fixed closing iterator on `IteratorValue` errors in the internal `iterate` helper that affected some polyfills
 - Fixed iterator closing in `Array.from` polyfill on failure to create array property
 - Fixed order of arguments validation in `Array.fromAsync` polyfill
+- Fixed a lack of counter validation on `MAX_SAFE_INTEGER` in `Array.fromAsync` polyfill
 - Fixed order of arguments validation in `Array.prototype.flat` polyfill
 - Fixed handling strings as iterables in `Iterator.{ zip, zipKeyed }` polyfills
 - Fixed some cases of iterators closing in `Iterator.{ zip, zipKeyed }` polyfills
diff --git a/packages/core-js/internals/async-iterator-iteration.js b/packages/core-js/internals/async-iterator-iteration.js
@@ -34,7 +34,7 @@ var createMethod = function (TYPE) {
 
       var loop = function () {
         try {
-          if (MAPPING) try {
+          try {
             doesNotExceedSafeInteger(counter);
           } catch (error5) {
             return ifAbruptCloseAsyncIterator(error5);
