test(node-integration-tests): Pin langchain to unbreak ESM initChatModel test - #23391
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…del test Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
mydea
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Aug 13, 2026
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What
Pins
langchainto 1.5.6 in the LangChain v1 initChatModel integration test. The other test blocks keep^1.0.0since their scenarios never import thelangchainmeta-package.Why
The upstream
langchain1.5.7 release importsDEFAULT_LANGSMITH_GATEWAYfrom@langchain/core/utils/gateway, but no published@langchain/core(latest 1.2.6) exports it. ESM validates named exports at link time, so the[esm]variant of the test crashes on develop. The pin can be reverted once a@langchain/corerelease ships the export.