js-client-sdk

LaunchDarkly Client-side SDK for Browser JavaScript

JavaScript ✓ Official SDK 3.9.0 🔐 5.3/10
121 stars  ·  67 forks  ·  Updated  ·  NOASSERTION
Install
npm install js-client-sdk
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feature-flagsfeature-togglesjavascriptlaunchdarklylaunchdarkly-sdkmanaged-by-terraformmirrorsdktypescript
Supported APIs (1)

Build custom integrations with the LaunchDarkly REST API

Version history All releases ↗

## [3.9.0](https://github.com/launchdarkly/js-client-sdk/compare/3.8.1...3.9.0) (2025-09-09) ### Features * Add experimental debug override functio…

## [3.8.1](https://github.com/launchdarkly/js-client-sdk/compare/3.8.0...3.8.1) (2025-05-30) ### Bug Fixes * Update to js-sdk-common 5.7.1 for upda…

## [3.8.0](https://github.com/launchdarkly/js-client-sdk/compare/3.7.0...3.8.0) (2025-05-23) ### Features * Add support for per-context summary eve…

## [3.7.0](https://github.com/launchdarkly/js-client-sdk/compare/3.6.1...3.7.0) (2025-04-29) ### Features * Add plugin support. ([3e3b7cc](https://…

## [3.6.1](https://github.com/launchdarkly/js-client-sdk/compare/3.6.0...3.6.1) (2025-04-25) ### Bug Fixes * Update configuration to expect `hooks`…

## [3.6.0](https://github.com/launchdarkly/js-client-sdk/compare/3.5.0...3.6.0) (2025-04-21) ### Features * Add hooks support. ([46f4571](https://…

## [3.5.0](https://github.com/launchdarkly/js-client-sdk/compare/3.4.0...3.5.0) (2024-10-18) ### Features * Add support for client-side prerequisit…

## [3.4.0] - 2024-06-20 ### Changed: - Updated to launchdarkly-js-sdk-common 5.3.0 which supports synchronous inspectors.

Quality signals
Score
Stars121
Forks67
Last updated
LicenseNOASSERTION
✓ Official SDK
Supported APIs (1)
launchdarkly.com
Language
JavaScript
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5.3
OpenSSF Scorecard
out of 10 · 2026-03-02
Full report ↗
🔄 Maintained
4/10
📋 Security Policy
9/10
👁️ Code Review
10/10
🪙 Token Permissions
0/10
🔐 Branch Protection
5/10
🔍 Static Analysis (SAST)
0/10