feat(core): Instrument langgraph createReactAgent #18403
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This reverts commit 481fc12.
nicohrubec
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This patches the `@langchain/langgraph/prebuilt` submodule export, when loading in ESM mode. Requires an update to `@opentelemetry/instrumentation`, in order to not block the patching of ESM submodule exports. depends-on: open-telemetry/opentelemetry-js#6246
nicohrubec
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Dec 23, 2025
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This PR instruments langgraph
createReactAgent. This is only relevant for pre v1 langgraph. Starting from v >1.0.0createReactAgentis replaced withcreate_agent, which is exported from langchain. The model is now also extracted and send along in the span.Currently this works for cjs only, because IITM doesn't properly patch submodule exports. Should work after IITM is updated to 2.0.1 and if we get this fix merged.