JS SDK

What's Changed

• feat(api): update API spec from langfuse/langfuse 41f5847 by @langfuse-bot in https://github.com/langfuse/langfuse-js/pull/812
• ci(deps): bump the github-actions group with 2 updates by @dependabot[bot] in https://github.com/langfuse/langfuse-js/pull/813
• feat(api): update API spec from langfuse/langfuse 632aafa by @langfuse-bot in https://github.com/langfuse/langfuse-js/pull/814

Full Changelog: https://github.com/langfuse/langfuse-js/compare/v5.4.0...v5.4.1

What's Changed

• chore(deps-dev): bump @opentelemetry/sdk-node from 0.205.0 to 0.217.0 by @dependabot[bot] in https://github.com/langfuse/langfuse-js/pull/800
• chore: add CODEOWNERS for GitHub config by @wochinge in https://github.com/langfuse/langfuse-js/pull/802
• ci(deps): bump the github-actions group across 1 directory with 4 updates by @dependabot[bot] in https://github.com/langfuse/langfuse-js/pull/798
• feat(span-processor): add app root detection by @hassiebp in https://github.com/langfuse/langfuse-js/pull/804
• ci: adjust zizmor advanced security handling by @wochinge in https://github.com/langfuse/langfuse-js/pull/805
• ci(deps): bump the github-actions group with 2 updates by @dependabot[bot] in https://github.com/langfuse/langfuse-js/pull/808
• ci: allow JS SDK branch prereleases by @hassiebp in https://github.com/langfuse/langfuse-js/pull/811

Full Changelog: https://github.com/langfuse/langfuse-js/compare/v5.3.0...v5.4.0

What's Changed

• fix(ci): pin actions/setup-node version comment to v6.3.0 by @wochinge in https://github.com/langfuse/langfuse-js/pull/792
• chore(ci): pin remaining action version comments to immutable patch tags by @wochinge in https://github.com/langfuse/langfuse-js/pull/793
• chore: improve codex agent setup by @hassiebp in https://github.com/langfuse/langfuse-js/pull/797
• feat(client): add experiment runner context by @wochinge in https://github.com/langfuse/langfuse-js/pull/795
• chore: test release-it preview by @wochinge in https://github.com/langfuse/langfuse-js/pull/799

Full Changelog: https://github.com/langfuse/langfuse-js/compare/v5.2.0...v5.3.0

What's Changed

• feat(api): update API spec from langfuse/langfuse 07cae52 by @langfuse-bot in https://github.com/langfuse/langfuse-js/pull/776
• chore(ci): optimize e2e langfuse server setup by @hassiebp in https://github.com/langfuse/langfuse-js/pull/777
• ci: add dependabot cooldown by @wochinge in https://github.com/langfuse/langfuse-js/pull/778
• ci(deps): bump github/codeql-action from 3.35.1 to 4.35.1 in the github-actions group across 1 directory by @dependabot[bot] in https://github.com/langfuse/langfuse-js/pull/780
• ci: harden GitHub Actions workflows with zizmor by @wochinge in https://github.com/langfuse/langfuse-js/pull/783
• ci: add missing dependabot cooldown by @wochinge in https://github.com/langfuse/langfuse-js/pull/784
• fix(langchain): emit tool observations for LangChain tool runs by @hassiebp in https://github.com/langfuse/langfuse-js/pull/787
• ci(deps): bump the github-actions group with 2 updates by @dependabot[bot] in https://github.com/langfuse/langfuse-js/pull/788
• fix(ci): disable zizmor advanced security to unblock releases by @wochinge in https://github.com/langfuse/langfuse-js/pull/789
• fix(ci): allow for immutable GitHub releases by @wochinge in https://github.com/langfuse/langfuse-js/pull/790
• fix(ci): fix mutated workfile by @wochinge in https://github.com/langfuse/langfuse-js/pull/791

Full Changelog: https://github.com/langfuse/langfuse-js/compare/v5.1.0...v5.2.0

What's Changed

• chore(deps-dev): bump happy-dom from 20.8.8 to 20.8.9 by @dependabot[bot] in https://github.com/langfuse/langfuse-js/pull/760
• chore(ci): move to blacksmith runners by @nimarb in https://github.com/langfuse/langfuse-js/pull/773
• feat(api): update API spec from langfuse/langfuse 1999706 by @langfuse-bot in https://github.com/langfuse/langfuse-js/pull/774

Full Changelog: https://github.com/langfuse/langfuse-js/compare/v5.0.2...v5.1.0

What's Changed

• feat(api): update API spec from langfuse/langfuse b3adfc3 by @langfuse-bot in https://github.com/langfuse/langfuse-js/pull/753
• fix(langchain): prevent handleChainStart from replacing structured input containing a "content" key by @taiichiro-nagase in https://github.com/langfuse/langfuse-js/pull/749
• Fix condition to check content type in promptClients by @budde377 in https://github.com/langfuse/langfuse-js/pull/751
• Add option to turn off logging by @szedelenyi in https://github.com/langfuse/langfuse-js/pull/752
• Fix string quotes in promptClients.ts by @budde377 in https://github.com/langfuse/langfuse-js/pull/755
• feat(api): update API spec from langfuse/langfuse a6c38c6 by @langfuse-bot in https://github.com/langfuse/langfuse-js/pull/757
• chore(deps-dev): bump happy-dom from 20.0.2 to 20.8.8 by @dependabot[bot] in https://github.com/langfuse/langfuse-js/pull/759
• ci(GitHub actions): pin GitHub actions, configure dependabot alerts for GitHub actions by @wochinge in https://github.com/langfuse/langfuse-js/pull/761
• fix(langchain): handle null tokenUsage by @hassiebp in https://github.com/langfuse/langfuse-js/pull/769
• [codex] Fix local experiment ID stability by @hassiebp in https://github.com/langfuse/langfuse-js/pull/770

New Contributors

• @taiichiro-nagase made their first contribution in https://github.com/langfuse/langfuse-js/pull/749
• @budde377 made their first contribution in https://github.com/langfuse/langfuse-js/pull/751
• @szedelenyi made their first contribution in https://github.com/langfuse/langfuse-js/pull/752
• @wochinge made their first contribution in https://github.com/langfuse/langfuse-js/pull/761

Full Changelog: https://github.com/langfuse/langfuse-js/compare/v5.0.1...v5.0.2

What's Changed

• feat(api): update API spec from langfuse/langfuse e84ca45 by @langfuse-bot in https://github.com/langfuse/langfuse-js/pull/747

Full Changelog: https://github.com/langfuse/langfuse-js/compare/v5.0.0...v5.0.1

Breaking changes and migration guide

Please see our documentation.

What's Changed

• feat!: prepare v5 release by @hassiebp in https://github.com/langfuse/langfuse-js/pull/723
• feat(api): update API spec from langfuse/langfuse 784ab09 by @langfuse-bot in https://github.com/langfuse/langfuse-js/pull/735
• feat(api): update API spec from langfuse/langfuse 25b5139 by @langfuse-bot in https://github.com/langfuse/langfuse-js/pull/737
• fix(otel): skip base64 decode for URL-based FilePart data in AI SDK media handling by @Tanmay-24 in https://github.com/langfuse/langfuse-js/pull/736
• feat(api): update API spec from langfuse/langfuse a93f65a by @langfuse-bot in https://github.com/langfuse/langfuse-js/pull/738
• feat(api): update API spec from langfuse/langfuse 2eaf041 by @langfuse-bot in https://github.com/langfuse/langfuse-js/pull/743
• fix(otel): allow async mask functions by @hassiebbot in https://github.com/langfuse/langfuse-js/pull/746

New Contributors

• @Tanmay-24 made their first contribution in https://github.com/langfuse/langfuse-js/pull/736
• @hassiebbot made their first contribution in https://github.com/langfuse/langfuse-js/pull/746

Full Changelog: https://github.com/langfuse/langfuse-js/compare/v4.6.1...v5.0.0

What's Changed

• feat(api): update API spec from langfuse/langfuse 270f036 by @langfuse-bot in https://github.com/langfuse/langfuse-js/pull/728
• feat(datasets): support running experiments on versioned datasets by @marliessophie in https://github.com/langfuse/langfuse-js/pull/727

Full Changelog: https://github.com/langfuse/langfuse-js/compare/v4.6.0...v4.6.1

What's Changed

• chore(deps-dev): bump @langchain/core from 1.0.1 to 1.1.8 by @dependabot[bot] in https://github.com/langfuse/langfuse-js/pull/712
• security: upgrade langchain by @maxdeichmann in https://github.com/langfuse/langfuse-js/pull/713
• feat(api): update API spec from langfuse/langfuse d59b6a3 by @langfuse-bot in https://github.com/langfuse/langfuse-js/pull/714
• chore: update LICENSE by @marcklingen in https://github.com/langfuse/langfuse-js/pull/715
• feat(api): update API spec from langfuse/langfuse 41f064c by @langfuse-bot in https://github.com/langfuse/langfuse-js/pull/719
• feat(api): update API spec from langfuse/langfuse 99ffc45 by @langfuse-bot in https://github.com/langfuse/langfuse-js/pull/720
• fix: move logger.debug with JSON stringify under if debug by @sumerman in https://github.com/langfuse/langfuse-js/pull/722
• feat(api): update API spec from langfuse/langfuse 966662e by @langfuse-bot in https://github.com/langfuse/langfuse-js/pull/726

New Contributors

• @sumerman made their first contribution in https://github.com/langfuse/langfuse-js/pull/722

Full Changelog: https://github.com/langfuse/langfuse-js/compare/v4.5.1...v4.6.0

What's Changed

• feat(api): update API spec from langfuse/langfuse 3dbec46 by @langfuse-bot in https://github.com/langfuse/langfuse-js/pull/707

Full Changelog: https://github.com/langfuse/langfuse-js/compare/v4.5.0...v4.5.1

What's Changed

• feat(client): allow propagating traceName by @hassiebp in https://github.com/langfuse/langfuse-js/pull/706

Full Changelog: https://github.com/langfuse/langfuse-js/compare/v4.4.10...v4.5.0

What's Changed

• feat(prompts): allow prompt deletion by @nimarb in https://github.com/langfuse/langfuse-js/pull/703
• fix: send correct headers for self hosted gcs bucket media upload by @georgegebbett in https://github.com/langfuse/langfuse-js/pull/702
• fix(media): handle hostname check for GCS by @hassiebp in https://github.com/langfuse/langfuse-js/pull/704
• fix(experiments): pass item metadata to evaluators by @hassiebp in https://github.com/langfuse/langfuse-js/pull/705

New Contributors

• @georgegebbett made their first contribution in https://github.com/langfuse/langfuse-js/pull/702

Full Changelog: https://github.com/langfuse/langfuse-js/compare/v4.4.9...v4.4.10

Full Changelog: https://github.com/langfuse/langfuse-js/compare/v4.4.8...v4.4.9

Full Changelog: https://github.com/langfuse/langfuse-js/compare/v4.4.7...v4.4.8

Full Changelog: https://github.com/langfuse/langfuse-js/compare/v4.4.6...v4.4.7

What's Changed

• fix(openai): handle usage parsing for legacy completion usage by @hassiebp in https://github.com/langfuse/langfuse-js/pull/700

Full Changelog: https://github.com/langfuse/langfuse-js/compare/v4.4.3...v4.4.4

What's Changed

• feat(api): update API spec from langfuse/langfuse db01ff9 by @langfuse-bot in https://github.com/langfuse/langfuse-js/pull/691
• feat(api): update API spec from langfuse/langfuse e1f390d by @langfuse-bot in https://github.com/langfuse/langfuse-js/pull/692
• feat(api): update API spec from langfuse/langfuse 53b8ec8 by @langfuse-bot in https://github.com/langfuse/langfuse-js/pull/694
• feat(api): update API spec from langfuse/langfuse 34d42bc by @langfuse-bot in https://github.com/langfuse/langfuse-js/pull/695
• chore(deps-dev): bump ai from 5.0.23 to 5.0.52 by @dependabot[bot] in https://github.com/langfuse/langfuse-js/pull/689
• feat(api): update API spec from langfuse/langfuse ad16fa0 by @langfuse-bot in https://github.com/langfuse/langfuse-js/pull/696
• feat(api): update API spec from langfuse/langfuse cb16277 by @langfuse-bot in https://github.com/langfuse/langfuse-js/pull/699
• fix(tracing): adapt CallbackHandler for langchain v1.1.x (#697) by @hassiebp in https://github.com/langfuse/langfuse-js/pull/698

Full Changelog: https://github.com/langfuse/langfuse-js/compare/v4.4.2...v4.4.3

Full Changelog: https://github.com/langfuse/langfuse-js/compare/v4.4.1...v4.4.2