fix(deps): update dependency @langchain/core to v1.2.9

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@langchain/core (source)	1.1.41 → 1.2.9

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Release Notes

langchain-ai/langchainjs (@​langchain/core)

v1.2.9

Compare Source

Patch Changes

• #​11402 43e4396 Thanks @​thushanth-bengre-langchain! - Fix ChatVertexAI/ChatGoogle content blocks: include tool_call blocks from message.tool_calls and skip spurious empty text blocks in contentBlocks.

v1.2.8

Compare Source

Patch Changes

• #​11369 d6ad973 Thanks @​hntrl! - fix(langchain): use unified endpoint for gateway

• #​11342 3b0e4c4 Thanks @​thushanth-bengre-langchain! - feat(core): mark errors as retryable or not, and stop retrying the ones that aren't

  Retry middleware retried every failure up to maxRetries, including deterministic ones like a bad API key or an unknown model. Retries also nest, so a single such failure could cost dozens of API calls.

  @langchain/core/errors adds stampRetryable(error, retryable) and getRetryable(error). Marking an error leaves its class and shape untouched, so a provider SDK error can be classified without breaking instanceof. getRetryable returns undefined for errors nobody classified, and both are exported so tool authors can mark their own failures.

  modelRetryMiddleware and toolRetryMiddleware now respect the mark by default, and retries stop as soon as one is found rather than each layer spending its own budget. Aborted calls, context overflow, and oversized payloads are marked non-retryable out of the box.
  Models accept a per-call maxRetries so a surrounding retry loop can take over.

  Behavior change: errors marked non-retryable now fail on the first attempt. Unclassified errors — including any from third-party integrations or custom tools — retry exactly as before. Pass retryOn: () => true to restore the old default. A custom onFailedAttempt replaces the built-in handler and opts out of marking.

v1.2.7

Compare Source

Patch Changes

• #​11366 c068bbf Thanks @​hntrl! - fix(core,langchain): patch and release core, update peer dependencies

v1.2.6

Compare Source

Patch Changes

• #​11344 f08e0c6 Thanks @​hntrl! - fix: apply [Symbol.hasInstance] method to all comparable properties using .isInstance()

  We have some internal schemas that rely on z.instanceof(). This uses a strict instanceof check which can conflict if there are multiple versions of core installed. This overrides the Symbol.hasInstance method to use the same logic as .isInstance() to compare objects at runtime.

v1.2.5

Compare Source

Patch Changes

• #​11305 e654022 Thanks @​jacoblee93! - Add LangSmith Gateway environment configuration to OpenAI, Anthropic, and Fireworks chat models.

• #​11295 1a1b347 Thanks @​vladislav-nechakhin! - fix(core): pass the mustache escape override per render call

v1.2.4

Compare Source

Patch Changes

• #​11190 9654bde Thanks @​pawel-twardziak! - Coalesce nested LangChain tracer callbacks that share run bookkeeping.

• #​11153 84ce6d6 Thanks @​parveshsaini! - fix(core): bind splitText when trimMessages receives a TextSplitter instance

v1.2.3

Compare Source

Patch Changes

• #​11200 08e5888 Thanks @​hntrl! - fix(aws): normalize and safely replay Bedrock reasoning blocks

  Emit standard reasoning blocks with preserved signatures, omit incomplete signature-only reasoning during replay, and retain compatibility with legacy and redacted Bedrock reasoning.

v1.2.2

Compare Source

Patch Changes

• #​11171 82bef01 Thanks @​christian-bromann! - fix(core): coerce string v1 AIMessage content to text blocks

  Prevent contentBlocks.push is not a function when constructing an
  AIMessage with response_metadata.output_version === "v1" and string
  content (common in serialized LangGraph stream payloads).

v1.2.1

Compare Source

Patch Changes

• #​10674 f017708 Thanks @​christian-bromann! - fix: classify provider 429s before retrying

• #​11092 7918bbd Thanks @​aolsenjazz! - fix(core): only treat arrays of content blocks as ToolMessage content

  Fix tool outputs that are arrays of plain objects being forwarded as malformed message content. An array is now only treated as message content blocks when every element is an object with a type; otherwise it is JSON-stringified.

v1.2.0

Minor Changes

• #​9651 348c37c Thanks @​christian-bromann! - feat(langchain): allow to set strict tag manually in providerStrategy #​9578

v1.1.48

Compare Source

Patch Changes

• #​10832 1b24369 Thanks @​info-arnav! - fix(core, openrouter): make CJS default re-exports callable

• #​10666 2bb55b0 Thanks @​hnustwjj! - feat(openrouter): surface reasoning content as v1 standard content blocks

  convertOpenRouterResponseToBaseMessage and
  convertOpenRouterDeltaToBaseMessageChunk now copy OpenRouter's
  reasoning (flat string) and reasoning_details (structured array) fields
  onto additional_kwargs.reasoning_content / additional_kwargs.reasoning_details.
  A new ChatOpenRouterTranslator is registered in @langchain/core under
  the "openrouter" provider key so AIMessage.contentBlocks emits standard
  {type: "reasoning"} blocks alongside text and tool calls.

  Previously, reasoning text returned by reasoning-capable models routed
  through OpenRouter (DeepSeek R1, Minimax M2, Claude extended thinking,
  o-series, etc.) was silently dropped: only the reasoning_tokens count
  was preserved via usage_metadata. Consumers using standard content blocks
  (including the frontend agent UI patterns shown in the docs) could not
  display the model's chain of thought.

• #​10918 3999fab Thanks @​christian-bromann! - fix(openai): stream custom tool calls through Responses API chunks

v1.1.47

Compare Source

Patch Changes

• #​10906 f61b345 Thanks @​hntrl! - feat(core): add uuid v6 utility support

  Add v6 UUID generation support to @langchain/core/utils/uuid by vendoring the upstream uuidjs v6 implementation and its v1ToV6 helper, exporting v6 from the UUID utils index, and adding tests for deterministic generation, buffer/offset behavior, validation/versioning, and ordering.

• #​10872 a640079 Thanks @​hntrl! - chore(deps): remove redundant @​types/uuid declarations

  Remove @types/uuid from package manifests that rely on @langchain/core/utils/uuid or do not require uuid type stubs directly, and refresh the lockfile entries accordingly.

• #​10792 3682268 Thanks @​Genmin! - fix(core): apply v1 message casting after implicit streaming aggregation

• #​10901 f26fc4a Thanks @​christian-bromann! - fix(testing): share fakeModel invocation state across bindTools instances

v1.1.46

Patch Changes

• #​10847 1659e7d Thanks @​hntrl! - chore(core): reduce transitive dependency exposure and tighten release hygiene

  Remove direct runtime dependencies on ansi-styles, camelcase, and decamelize
  by inlining equivalent logic in core internals, and enable npm provenance in the
  release workflow.

• #​10790 ef78bc6 Thanks @​Genmin! - fix(core): keep different content block types separate when merging chunks

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