feat(node): Add LangChain v1 support #18306
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size-limit report 📦
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node-overhead report 🧳Note: This is a synthetic benchmark with a minimal express app and does not necessarily reflect the real-world performance impact in an application.
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Updated comments to reflect changes in finish_reason usage between versions.
nicohrubec reviewed Nov 25, 2025
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Makes sense to me, just a few questions/comments. Generally it feels like the attribute extraction gets quite difficult to read, not sure if we can really improve this though (maybe splitting some types into pre/post v1 but not sure if that actually helps)
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We usually try to keep things as general as possible, so splitting would create a lot of unnecessary work. Type changes typically only happen with major releases. I’ve moved everything to /types to make it easier to read, and hopefully this is as simple as it can be |
nicohrubec approved these changes Nov 25, 2025
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Thanks for addressing the comments, LGTM
RulaKhaled force-pushed the rolaabuhasna/js-1071-support-langchain-v1 branch from 9e0171a to 86ac8f3 Compare Doridian pushed a commit to foxCaves/foxCaves that referenced this pull request Dec 3, 2025
This PR contains the following updates: | Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) | |---|---|---|---| | [@sentry/react](https://github.com/getsentry/sentry-javascript/tree/master/packages/react) ([source](https://github.com/getsentry/sentry-javascript)) | [`10.27.0` -> `10.28.0`](https://renovatebot.com/diffs/npm/@sentry%2freact/10.27.0/10.28.0) |  |  | --- ### Release Notes <details> <summary>getsentry/sentry-javascript (@​sentry/react)</summary> ### [`v10.28.0`](https://github.com/getsentry/sentry-javascript/releases/tag/10.28.0) [Compare Source](getsentry/sentry-javascript@10.27.0...10.28.0) ##### Important Changes - **feat(core): Make `matcher` parameter optional in `makeMultiplexedTransport` ([#​10798](getsentry/sentry-javascript#10798 The `matcher` parameter in `makeMultiplexedTransport` is now optional with a sensible default. This makes it much easier to use the multiplexed transport for sending events to multiple DSNs based on runtime configuration. **Before:** ```javascript import { makeFetchTransport, makeMultiplexedTransport } from '@​sentry/browser'; const EXTRA_KEY = 'ROUTE_TO'; const transport = makeMultiplexedTransport(makeFetchTransport, args => { const event = args.getEvent(); if (event?.extra?.[EXTRA_KEY] && Array.isArray(event.extra[EXTRA_KEY])) { return event.extra[EXTRA_KEY]; } return []; }); Sentry.init({ transport, // ... other options }); // Capture events with routing info Sentry.captureException(error, { extra: { [EXTRA_KEY]: [ { dsn: 'https://key1@​sentry.io/project1', release: 'v1.0.0' }, { dsn: 'https://key2@​sentry.io/project2' }, ], }, }); ``` **After:** ```javascript import { makeFetchTransport, makeMultiplexedTransport, MULTIPLEXED_TRANSPORT_EXTRA_KEY } from '@​sentry/browser'; // Just pass the transport generator - the default matcher handles the rest! Sentry.init({ transport: makeMultiplexedTransport(makeFetchTransport), // ... other options }); // Capture events with routing info using the exported constant Sentry.captureException(error, { extra: { [MULTIPLEXED_TRANSPORT_EXTRA_KEY]: [ { dsn: 'https://key1@​sentry.io/project1', release: 'v1.0.0' }, { dsn: 'https://key2@​sentry.io/project2' }, ], }, }); ``` The default matcher looks for routing information in `event.extra[MULTIPLEXED_TRANSPORT_EXTRA_KEY]`. You can still provide a custom matcher function for advanced use cases. - **feat(nextjs): Support cacheComponents on turbopack ([#​18304](getsentry/sentry-javascript#18304 This release adds support for `cacheComponents` on turbopack builds. We are working on adding support for this feature in webpack builds as well. ##### Other Changes - feat: Publish AWS Lambda Layer for Node 24 ([#​18327](getsentry/sentry-javascript#18327)) - feat(browser): Expose langchain instrumentation ([#​18342](getsentry/sentry-javascript#18342)) - feat(browser): Expose langgraph instrumentation ([#​18345](getsentry/sentry-javascript#18345)) - feat(cloudflare): Allow specifying a custom fetch in Cloudflare transport options ([#​18335](getsentry/sentry-javascript#18335)) - feat(core): Add `isolateTrace` option to `Sentry.withMonitor()` ([#​18079](getsentry/sentry-javascript#18079)) - feat(deps): bump [@​sentry/webpack-plugin](https://github.com/sentry/webpack-plugin) from 4.3.0 to 4.6.1 ([#​18272](getsentry/sentry-javascript#18272)) - feat(nextjs): Add cloudflare `waitUntil` detection ([#​18336](getsentry/sentry-javascript#18336)) - feat(node): Add LangChain v1 support ([#​18306](getsentry/sentry-javascript#18306)) - feat(remix): Add parameterized transaction naming for routes ([#​17951](getsentry/sentry-javascript#17951)) - fix(cloudflare): Keep http root span alive until streaming responses are consumed ([#​18087](getsentry/sentry-javascript#18087)) - fix(cloudflare): Wait for async events to finish ([#​18334](getsentry/sentry-javascript#18334)) - fix(core): `continueTrace` doesn't propagate given trace ID if active span exists ([#​18328](getsentry/sentry-javascript#18328)) - fix(node-core): Handle custom scope in log messages without parameters ([#​18322](getsentry/sentry-javascript#18322)) - fix(opentelemetry): Ensure Sentry spans don't leak when tracing is disabled ([#​18337](getsentry/sentry-javascript#18337)) - fix(react-router): Use underscores in trace origin values ([#​18351](getsentry/sentry-javascript#18351)) - chore(tanstackstart-react): Export custom inits from tanstackstart-react ([#​18369](getsentry/sentry-javascript#18369)) - chore(tanstackstart-react)!: Remove empty placeholder implementations ([#​18338](getsentry/sentry-javascript#18338)) <details> <summary><strong>Internal Changes</strong></summary> - chore: Allow URLs as issue ([#​18372](getsentry/sentry-javascript#18372)) - chore(changelog): Add entry for [#​18304](getsentry/sentry-javascript#18304) ([#​18329](getsentry/sentry-javascript#18329)) - chore(ci): Add action to track all PRs as issues ([#​18363](getsentry/sentry-javascript#18363)) - chore(github): Adjust `BUGBOT.md` rules to flag invalid op and origin values during review ([#​18352](getsentry/sentry-javascript#18352)) - ci: Add action to create issue on gitflow merge conflicts ([#​18319](getsentry/sentry-javascript#18319)) - ci(deps): bump actions/checkout from 5 to 6 ([#​18268](getsentry/sentry-javascript#18268)) - ci(deps): bump peter-evans/create-pull-request from 7.0.8 to 7.0.9 ([#​18361](getsentry/sentry-javascript#18361)) - test(cloudflare): Add typechecks for cloudflare-worker e2e test ([#​18321](getsentry/sentry-javascript#18321)) </details> #### Bundle size 📦 | Path | Size | | ----------------------------------------------------------------------------------------------------- | --------- | | [@​sentry/browser](https://github.com/sentry/browser) | 24.22 KB | | [@​sentry/browser](https://github.com/sentry/browser) - with treeshaking flags | 22.76 KB | | [@​sentry/browser](https://github.com/sentry/browser) (incl. Tracing) | 40.57 KB | | [@​sentry/browser](https://github.com/sentry/browser) (incl. Tracing, Profiling) | 45.05 KB | | [@​sentry/browser](https://github.com/sentry/browser) (incl. Tracing, Replay) | 78.08 KB | | [@​sentry/browser](https://github.com/sentry/browser) (incl. Tracing, Replay) - with treeshaking flags | 68.05 KB | | [@​sentry/browser](https://github.com/sentry/browser) (incl. Tracing, Replay with Canvas) | 82.65 KB | | [@​sentry/browser](https://github.com/sentry/browser) (incl. Tracing, Replay, Feedback) | 94.61 KB | | [@​sentry/browser](https://github.com/sentry/browser) (incl. Feedback) | 40.51 KB | | [@​sentry/browser](https://github.com/sentry/browser) (incl. sendFeedback) | 28.8 KB | | [@​sentry/browser](https://github.com/sentry/browser) (incl. FeedbackAsync) | 33.66 KB | | [@​sentry/react](https://github.com/sentry/react) | 25.9 KB | | [@​sentry/react](https://github.com/sentry/react) (incl. Tracing) | 42.72 KB | | [@​sentry/vue](https://github.com/sentry/vue) | 28.56 KB | | [@​sentry/vue](https://github.com/sentry/vue) (incl. Tracing) | 42.32 KB | | [@​sentry/svelte](https://github.com/sentry/svelte) | 24.24 KB | | CDN Bundle | 26.57 KB | | CDN Bundle (incl. Tracing) | 41.22 KB | | CDN Bundle (incl. Tracing, Replay) | 76.9 KB | | CDN Bundle (incl. Tracing, Replay, Feedback) | 82.23 KB | | CDN Bundle - uncompressed | 78.09 KB | | CDN Bundle (incl. Tracing) - uncompressed | 122.4 KB | | CDN Bundle (incl. Tracing, Replay) - uncompressed | 235.71 KB | | CDN Bundle (incl. Tracing, Replay, Feedback) - uncompressed | 248.17 KB | | [@​sentry/nextjs](https://github.com/sentry/nextjs) (client) | 44.88 KB | | [@​sentry/sveltekit](https://github.com/sentry/sveltekit) (client) | 40.92 KB | | [@​sentry/node-core](https://github.com/sentry/node-core) | 50.06 KB | | [@​sentry/node](https://github.com/sentry/node) | 155.7 KB | | [@​sentry/node](https://github.com/sentry/node) - without tracing | 90.67 KB | | [@​sentry/aws-serverless](https://github.com/sentry/aws-serverless) | 105.61 KB | </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0Mi4yNy4xIiwidXBkYXRlZEluVmVyIjoiNDIuMjcuMSIsInRhcmdldEJyYW5jaCI6Im1haW4iLCJsYWJlbHMiOltdfQ==--> Reviewed-on: https://git.foxden.network/foxCaves/foxCaves/pulls/12 Co-authored-by: Renovate <renovate@foxden.network> Co-committed-by: Renovate <renovate@foxden.network>
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This PR adds support for LangChain v1.
Changes
LangChain v1 Response Metadata Extraction
Instrument ConfigurableModel from
chat_models/universal.cjsQuick context:
The
initChatModelunified API (introduced in LangChain v1) was not being instrumented in CJS applications. This happened because:initChatModeluses dynamicimport()to load providers (even in CJS mode)require(), not dynamicimport()@langchain/openaiwere never being patched when loaded viainitChatModelSolution: Added instrumentation for the main
langchainpackage. Whenlangchain/dist/chat_models/universal.cjsis loaded, we patch theConfigurableModelprototype. SinceinitChatModelreturns aConfigurableModelinstance, it inherits the patched methods regardless of how the provider is loaded.This fix ensures
initChatModelworks in CJS applications without requiring users to manually import provider packages.initChatModelAPI with OpenAI (now working in both ESM and CJS)Closes https://linear.app/getsentry/issue/JS-1071/support-langchain-v1