---
title: JavaScript SDK 3.21.3
summary: null
url: >-
  https://www.fastly.com/documentation/reference/changes/2024/09/javascript-sdk-3.21.3
---

## Fixed

- Device.toJSON() properties ([#937](https://github.com/fastly/js-compute-runtime/issues/937)) ([c4182d3](https://github.com/fastly/js-compute-runtime/commit/c4182d30e8d22d7720acb9d51bd59763ab8b83e5))
- event loop stall error no longer a panic ([#934](https://github.com/fastly/js-compute-runtime/issues/934)) ([08c9934](https://github.com/fastly/js-compute-runtime/commit/08c9934c59bd00ddd2dde252f6529ee8322be809))