686f6c61:fix/tool-call-chunks-merge-without-index - Branch - langchain-ai/langchain - CodSpeed

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fix(core): merge tool_call_chunks without index in streaming

Comparing

686f6c61:fix/tool-call-chunks-merge-without-index

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b144819

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master

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Untouched: 13

Skipped: 21

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Benchmarks

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test_async_callbacks_in_sync

libs/core/tests/benchmarks/test_async_callbacks.py

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test_import_time[ChatPromptTemplate]

libs/core/tests/benchmarks/test_imports.py

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libs/core/tests/benchmarks/test_imports.py

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test_import_time[BaseChatModel]

libs/core/tests/benchmarks/test_imports.py

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libs/core/tests/benchmarks/test_imports.py

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libs/core/tests/benchmarks/test_imports.py

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test_import_time[CallbackManager]

libs/core/tests/benchmarks/test_imports.py

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test_import_time[tool]

libs/core/tests/benchmarks/test_imports.py

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test_import_time[HumanMessage]

libs/core/tests/benchmarks/test_imports.py

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test_import_time[LangChainTracer]

libs/core/tests/benchmarks/test_imports.py

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libs/core/tests/benchmarks/test_imports.py

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libs/core/tests/benchmarks/test_imports.py

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Commits

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Base

master

2847814

-4.14%

fix(core): merge tool_call_chunks without index in streaming Fixes #34654 When using agent.stream() with stream_mode=["messages"], tool_call_chunks with index=None were not merging correctly, creating multiple partial tool_calls with empty names that caused 422 errors from OpenAI API. Modified merge_lists() to handle tool_call_chunks without valid index by: - Merging chunks with same non-empty id when continuation (empty name) - Sequential merging for chunks with empty ids (streaming fragments) - Preserving existing behavior for chunks with valid index Added comprehensive unit tests covering edge cases including multiple tool calls, interleaved chunks, and sequential streaming scenarios. All existing tests pass without regression.

b144819

1 day ago

by 686f6c61

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