---
title: JavaScript SDK 3.13.0
summary: null
url: >-
  https://www.fastly.com/documentation/reference/changes/2024/04/javascript-sdk-3.13.0
---

## Added

- Add KVStore.prototype.delete method ([578d858](https://github.com/fastly/js-compute-runtime/commit/578d858b6678c27116ead213f58d2f4fe80f1355))

## Changed

- Update to SpiderMonkey 124.0.2 ([e32632e](https://github.com/fastly/js-compute-runtime/commit/e32632e16ba822770dd9b0637185f7266a7952e2))
  This release includes:
  \- An optimization for functions that only use `arguments.length` to avoid allocating the `arguments` object.
  \- An optimization for `Object.HasOwn` which for small numbers of atoms just unrolls the loop.

## Fixed

- Correct type definition for the global BackendConfiguration type - there is no `checkCertificate` field ([62fd0ea](https://github.com/fastly/js-compute-runtime/commit/62fd0ea36e6aefd4a3cb281a09716a901f111485))
- Improve our console.log output for functions ([9a97fc1](https://github.com/fastly/js-compute-runtime/commit/9a97fc1352926ecad8377d72eca1e18e28aa2173))
- Refactor our async task implementation to be a generic AsyncTask class instead of separate implementations for each async operation ([68dfec7](https://github.com/fastly/js-compute-runtime/commit/68dfec75a0c9c583dc4be39a17cbbf9b70ff8b40))