---
title: Javascript-SDK - 4.3.1
slug: feature-experimentation/release-notes/javascript-sdk-4-3-1
docTags: 
createdAt: 2026-07-20T15:44:17.261Z
---

\## \[4.3.1] - October 5, 2020

\### Bug fixes

\- Exported \`OptimizelyConfig\` and \`UserAttributes\` type in TypeScript type definitions (\[#587]\([https://github.com/optimizely/javascript-sdk/pull/587](https://github.com/optimizely/javascript-sdk/pull/587)))

[https://github.com/optimizely/javascript-sdk/releases/tag/v4.3.1](https://github.com/optimizely/javascript-sdk/releases/tag/v4.3.1)