langchain-ai/langchainjs @langchain/core@1.1.32

on GitHub

Patch Changes

• #10330 26488b5 Thanks @hntrl! - fix(core): treat empty string tool call chunk IDs as missing during merge

  Fixed _mergeLists in message base to treat empty string "" IDs the same as null/undefined when merging tool call chunks. This fixes old completions-style streaming where follow-up chunks carry id: "" instead of undefined, which previously prevented chunks from being merged by index.

• #10167 ca826f6 Thanks @colifran! - feat: implement type inference for tool streams

• #10334 a602c42 Thanks @maahir30! - fix(core): add JSDoc docstrings to fakeModel builder API and export FakeBuiltModel

• #10254 db7d017 Thanks @pawel-twardziak! - fix(core): preserve thoughtSignature in array content during streaming with thinking models