---
title: Javascript-SDK - [3.0.1] - February 21, 2019
slug: feature-experimentation/release-notes/javascript-sdk-3-0-1-february-21-2019
docTags: 
createdAt: 2026-07-20T15:45:14.495Z
---

\### Changed
\- Expose default \`loggers\`, \`errorHandlers\`, \`eventDispatcher\` and \`enums\` on top level require.
\- \`createLogger\` and \`createNoOpLogger\` are available as methods on \`optimizelySdk.logging\`
\- Added \`optimizelySdk.errorHandler\`
\- Added \`optimizelySdk.eventDispatcher\`
\- Added \`optimizelySdk.enums\`

[https://github.com/optimizely/javascript-sdk/releases/tag/v3.0.1](https://github.com/optimizely/javascript-sdk/releases/tag/v3.0.1)