es-toolkit 1.42.0

v1.42.0

on Node.js Yarn

Released on November 17th, 2025.

• Added new async utilities: filterAsync, flatMapAsync, forEachAsync, mapAsync, reduceAsync, and limitAsync for handling asynchronous operations.
• Exported ThrottleOptions and DebounceOptions interfaces for better type support.
• Fixed isFinite to implement type predicate to narrow type to number.
• Fixed isSafeInteger to implement type predicate to narrow type to number.
• Fixed omit to prevent adding index properties to array-like objects.
• Fixed mergeWith to remove unnecessary nullish coalescing for 100% branch coverage.
• Fixed compat/updateWith to remove unreachable code and add prototype pollution test.
• Updated documentation headings for consistency.
• Improved test coverage for compat/mergeWith, compat/unset, get, toMerged, mergeWith, and compat/intersectionBy with additional edge cases and security tests.

We sincerely thank @Debbl, @wo-o29, @raon0211, @Yeom-JinHo, @sukvvon, and @D-Sketon for their contributions. We appreciate your great efforts!