v3.9.1

3.9.1 (2026-04-06)

Bug Fixes

• add deprecation notice to README (b692931)

---

This PR was generated with Release Please. See documentation.

---

Note

Low Risk
Low risk release bookkeeping only: version/manifest bumps and changelog text updates, with no runtime code changes.

Overview
Bumps the package and release manifest versions from 3.9.0 to 3.9.1.

Updates CHANGELOG.md with a 3.9.1 entry that announces the rename to @launchdarkly/js-client-sdk and directs users to the new repository and issue tracker for future releases.

^{Reviewed by Cursor Bugbot for commit 9591a6c. Bugbot is set up for automated code reviews on this repo. Configure here.}

v3.9.0

3.9.0 (2025-09-09)

Features

• Add experimental debug override functionality. (9af8be9)
• Add experimental debug override functionality. (9fcac21)
• Add experimental debug override functionality. (#326) (9af8be9)

v3.8.1

3.8.1 (2025-05-30)

Bug Fixes

• Update to js-sdk-common 5.7.1 for updated docs (#324) (5be94b1)

v3.8.0

3.8.0 (2025-05-23)

Features

• Add support for per-context summary events. (#321) (f5a1f80)

v3.7.0

3.7.0 (2025-04-29)

Features

• Add plugin support. (3e3b7cc)
• Add support for the afterTrack stage for hooks. (3e3b7cc)

v3.6.1

3.6.1 (2025-04-25)

Bug Fixes

• Update configuration to expect hooks. (#317) (574dec8)

v3.6.0

3.6.0 (2025-04-21)

Features

• Add hooks support. (46f4571)
• Inline contexts in custom events. (46f4571)

v3.5.0

3.5.0 (2024-10-18)

Features

• Add support for client-side prerequisite events. (#306) (fe51da0)

3.4.0

[3.4.0] - 2024-06-20

Changed:

• Updated to launchdarkly-js-sdk-common 5.3.0 which supports synchronous inspectors.

3.3.0

[3.3.0] - 2024-05-01

Added:

• Added an optional timeout to the waitForInitialization method. When a timeout is specified the returned promise will be rejected after the timeout elapses if the client has not finished initializing within that time. When no timeout is specified the returned promise will not be resolved or rejected until the initialization either completes or fails.

Changed:

• The track method now validates that the provided metricValue is a number. If a metric value is provided, and it is not a number, then a warning will be logged.

Fixed:

• Fixed the documentation for evaluationReasons for the identify method.