what stackpulse tracks
LangChain.js releases from GitHub
StackPulse watches LangChain.js release notes and keeps the original source link close to every summary.
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Build context-aware reasoning applications in JavaScript StackPulse turns upstream changelogs into scannable summaries with risky changes, deprecations, migration notes, and source links.
what stackpulse tracks
StackPulse watches LangChain.js release notes and keeps the original source link close to every summary.
upgrade risk
Risky changes are separated from normal feature notes so you can scan upgrade impact before changing production dependencies.
migration notes
Migration steps and recommended actions are only shown when the upstream release notes support them.
This patch release fixes message projection behavior in middleware and improves instanceof checks for schema validation. Internal model calls from summarizationMiddleware and toolEmulatorMiddleware are now properly excluded from message projections.
Developers using summarizationMiddleware or toolEmulatorMiddleware may see changes in message projection behavior.
Review middleware usage if your application relies on message projection behavior from summarizationMiddleware or toolEmulatorMiddleware.
This patch release updates dependencies, specifically upgrading @langchain/openai to version 1.5.7.
view source on github->This release primarily updates dependencies, including a bump to @langchain/openai@1.5.7.
Users relying on @langchain/openrouter may need to ensure compatibility with the updated @langchain/openai dependency.
Review the updated dependencies and test for compatibility.
This release updates dependencies, specifically upgrading @langchain/openai to version 1.5.7.
view source on github->This release updates dependencies, specifically upgrading @langchain/openai to version 1.5.6.
view source on github->This release updates dependencies, specifically upgrading @langchain/openai to version 1.5.6.
view source on github->This release introduces LangSmith Gateway environment configuration support for OpenAI, Anthropic, and Fireworks chat models.
Users of OpenAI, Anthropic, and Fireworks chat models who integrate with LangSmith Gateway are affected.
Update to version 1.5.6 to enable LangSmith Gateway environment configuration.
This patch release updates dependencies, specifically upgrading @langchain/openai to version 1.5.6.
view source on github->This patch release fixes an issue with LocalFileStore key resolution using path.relative.
Users relying on LocalFileStore key resolution may be affected.
Update to version 1.5.5 if you use LocalFileStore.
This patch release focuses on preserving cost metadata in Anthropic streams, ensuring accurate cost tracking.
Users relying on cost metadata in Anthropic streams will benefit from improved accuracy.
Update to ensure accurate cost tracking in Anthropic streams.
This patch release fixes issues with nested LangChain tracer callbacks and TextSplitter instances when used with trimMessages.
Developers using nested LangChain tracer callbacks or TextSplitter instances with trimMessages may be affected.
Update to version 1.2.4 to benefit from the fixes.
This release adds support for Claude Opus 5 in the Anthropic integration.
Users leveraging the Anthropic integration can now utilize Claude Opus 5.
Update to version 1.5.2 to access Claude Opus 5 support.
This release introduces middleware for handling tool execution errors, improving error management in LangChain.js.
Developers using LangChain.js tools will benefit from improved error handling capabilities.
Update to version 1.5.4 to take advantage of the new middleware for error handling.
Fixed Bedrock reasoning block handling in AWS integration by normalizing and safely replaying blocks while maintaining compatibility.
Users of the AWS Bedrock integration may be affected by fixes to reasoning block handling.
Update to ensure proper handling of Bedrock reasoning blocks.
This release focuses on fixing issues related to Bedrock reasoning blocks, ensuring normalized and safe replay while maintaining compatibility with legacy and redacted Bedrock reasoning.
Users leveraging Bedrock reasoning blocks in AWS integrations are affected.
Update to version 1.4.3 to ensure proper handling of Bedrock reasoning blocks.
This patch updates dependencies to their latest versions.
Users depending on updated dependencies may be affected.
Ensure compatibility with the updated dependencies.
This release updates dependencies and includes minor patches.
Users relying on the updated dependencies may need to ensure compatibility.
Update dependencies accordingly if using the affected packages.
This release includes dependency updates for @langchain/openrouter, primarily focusing on compatibility improvements.
Users relying on @langchain/openrouter may need to ensure compatibility with updated dependencies.
Review updated dependencies and test for compatibility.
This patch release updates dependencies to their latest versions.
Users depending on @langchain/openai may need to update their dependencies.
Update @langchain/openai to version 1.5.4 if not already using it.
Fixed an issue where output text was not being emitted for assistant content in responses input.
Affects users using assistant content in OpenAI responses.
Update to receive proper output_text emissions for assistant content.