fix(core): Exclude server-only AI/MCP modules from native bundles#5802
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fix(core): Exclude server-only AI/MCP modules from native bundles#5802
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Closes #5628 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Contributor
Semver Impact of This PR⚪ None (no version bump detected) 📋 Changelog PreviewThis is how your changes will appear in the changelog.
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…esolver Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Contributor
Android (legacy) Performance metrics 🚀
|
| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| 86584b7+dirty | 463.83 ms | 500.31 ms | 36.48 ms |
| 9a81842+dirty | 412.23 ms | 416.56 ms | 4.33 ms |
| c637fc7+dirty | 433.70 ms | 467.76 ms | 34.06 ms |
| d73150f+dirty | 411.21 ms | 465.86 ms | 54.65 ms |
| fa7bb7e+dirty | 350.37 ms | 377.02 ms | 26.65 ms |
| 3bd3f0d+dirty | 447.21 ms | 472.31 ms | 25.10 ms |
| 88890fe+dirty | 350.94 ms | 365.74 ms | 14.80 ms |
| 95aaf8a | 437.89 ms | 419.45 ms | -18.44 ms |
| c0842e7+dirty | 527.76 ms | 566.69 ms | 38.93 ms |
| 1e7a472+dirty | 348.80 ms | 362.55 ms | 13.75 ms |
App size
| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| 86584b7+dirty | 43.75 MiB | 48.08 MiB | 4.33 MiB |
| 9a81842+dirty | 43.75 MiB | 48.08 MiB | 4.33 MiB |
| c637fc7+dirty | 43.75 MiB | 48.40 MiB | 4.64 MiB |
| d73150f+dirty | 43.75 MiB | 48.55 MiB | 4.80 MiB |
| fa7bb7e+dirty | 17.75 MiB | 19.75 MiB | 2.00 MiB |
| 3bd3f0d+dirty | 17.75 MiB | 19.70 MiB | 1.95 MiB |
| 88890fe+dirty | 17.75 MiB | 19.71 MiB | 1.96 MiB |
| 95aaf8a | 17.75 MiB | 19.68 MiB | 1.93 MiB |
| c0842e7+dirty | 43.75 MiB | 48.41 MiB | 4.66 MiB |
| 1e7a472+dirty | 17.75 MiB | 19.70 MiB | 1.96 MiB |
Contributor
iOS (legacy) Performance metrics 🚀
|
| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| ea3e26e+dirty | 1229.13 ms | 1228.46 ms | -0.67 ms |
| 80e4616+dirty | 1221.32 ms | 1225.64 ms | 4.32 ms |
| 818a608+dirty | 1205.76 ms | 1208.00 ms | 2.24 ms |
| 77061ed+dirty | 1233.16 ms | 1234.88 ms | 1.71 ms |
| bef3709+dirty | 1222.07 ms | 1220.24 ms | -1.83 ms |
| a206511+dirty | 1185.00 ms | 1186.35 ms | 1.35 ms |
| 74979ac+dirty | 1210.49 ms | 1213.31 ms | 2.82 ms |
| a2bb688+dirty | 1223.53 ms | 1232.90 ms | 9.37 ms |
| 8a868fe+dirty | 1221.50 ms | 1230.78 ms | 9.28 ms |
| d590428+dirty | 1211.77 ms | 1220.51 ms | 8.75 ms |
App size
| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| ea3e26e+dirty | 3.41 MiB | 4.58 MiB | 1.17 MiB |
| 80e4616+dirty | 3.38 MiB | 4.60 MiB | 1.22 MiB |
| 818a608+dirty | 2.63 MiB | 3.91 MiB | 1.28 MiB |
| 77061ed+dirty | 2.63 MiB | 3.98 MiB | 1.34 MiB |
| bef3709+dirty | 3.38 MiB | 4.78 MiB | 1.40 MiB |
| a206511+dirty | 3.41 MiB | 4.67 MiB | 1.25 MiB |
| 74979ac+dirty | 3.38 MiB | 4.60 MiB | 1.22 MiB |
| a2bb688+dirty | 2.63 MiB | 3.99 MiB | 1.36 MiB |
| 8a868fe+dirty | 3.38 MiB | 4.60 MiB | 1.22 MiB |
| d590428+dirty | 3.38 MiB | 4.78 MiB | 1.39 MiB |
Contributor
iOS (new) Performance metrics 🚀
|
| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| ea3e26e+dirty | 1216.61 ms | 1214.15 ms | -2.47 ms |
| 80e4616+dirty | 1206.90 ms | 1205.94 ms | -0.96 ms |
| 818a608+dirty | 1218.84 ms | 1223.18 ms | 4.34 ms |
| 77061ed+dirty | 1210.77 ms | 1218.45 ms | 7.68 ms |
| bef3709+dirty | 1217.79 ms | 1225.33 ms | 7.54 ms |
| a206511+dirty | 1225.02 ms | 1223.74 ms | -1.28 ms |
| 74979ac+dirty | 1212.33 ms | 1212.54 ms | 0.21 ms |
| a2bb688+dirty | 1244.82 ms | 1238.60 ms | -6.22 ms |
| 8a868fe+dirty | 1206.85 ms | 1215.04 ms | 8.19 ms |
| d590428+dirty | 1221.23 ms | 1225.27 ms | 4.03 ms |
App size
| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| ea3e26e+dirty | 3.41 MiB | 4.58 MiB | 1.17 MiB |
| 80e4616+dirty | 3.38 MiB | 4.60 MiB | 1.22 MiB |
| 818a608+dirty | 3.19 MiB | 4.48 MiB | 1.29 MiB |
| 77061ed+dirty | 3.19 MiB | 4.54 MiB | 1.36 MiB |
| bef3709+dirty | 3.38 MiB | 4.78 MiB | 1.40 MiB |
| a206511+dirty | 3.41 MiB | 4.67 MiB | 1.25 MiB |
| 74979ac+dirty | 3.38 MiB | 4.60 MiB | 1.22 MiB |
| a2bb688+dirty | 3.19 MiB | 4.56 MiB | 1.37 MiB |
| 8a868fe+dirty | 3.38 MiB | 4.60 MiB | 1.22 MiB |
| d590428+dirty | 3.38 MiB | 4.78 MiB | 1.39 MiB |
Contributor
Android (new) Performance metrics 🚀
|
| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| 7480abe+dirty | 363.80 ms | 431.34 ms | 67.54 ms |
| 2b89ce9+dirty | 372.22 ms | 417.06 ms | 44.84 ms |
| 170d5ea+dirty | 348.79 ms | 406.94 ms | 58.15 ms |
| b1579bc+dirty | 391.87 ms | 456.26 ms | 64.39 ms |
| 73f2455+dirty | 369.33 ms | 398.90 ms | 29.57 ms |
| 0b64753+dirty | 358.55 ms | 429.16 ms | 70.61 ms |
| 6a70a7e+dirty | 382.45 ms | 424.54 ms | 42.09 ms |
| 2adbd1e+dirty | 366.13 ms | 419.49 ms | 53.36 ms |
| f8d19f8+dirty | 374.17 ms | 383.40 ms | 9.23 ms |
| 7be1f99+dirty | 369.02 ms | 399.60 ms | 30.58 ms |
App size
| Revision | Plain | With Sentry | Diff |
|---|---|---|---|
| 7480abe+dirty | 7.15 MiB | 8.41 MiB | 1.26 MiB |
| 2b89ce9+dirty | 7.15 MiB | 8.41 MiB | 1.26 MiB |
| 170d5ea+dirty | 7.15 MiB | 8.42 MiB | 1.27 MiB |
| b1579bc+dirty | 43.94 MiB | 49.27 MiB | 5.33 MiB |
| 73f2455+dirty | 43.94 MiB | 48.82 MiB | 4.88 MiB |
| 0b64753+dirty | 7.15 MiB | 8.42 MiB | 1.27 MiB |
| 6a70a7e+dirty | 7.15 MiB | 8.42 MiB | 1.26 MiB |
| 2adbd1e+dirty | 7.15 MiB | 8.43 MiB | 1.28 MiB |
| f8d19f8+dirty | 43.94 MiB | 48.91 MiB | 4.97 MiB |
| 7be1f99+dirty | 7.15 MiB | 8.42 MiB | 1.27 MiB |
alwx
reviewed
Mar 11, 2026
| } | ||
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| const SENTRY_CORE_SERVER_ONLY_MODULE_RE = | ||
| /@sentry\/core\/.*\/(mcp-server|tracing\/(vercel-ai|openai|anthropic-ai|google-genai|langchain|langgraph)|utils\/ai)(\/|$)/; |
Contributor
There was a problem hiding this comment.
my only concern here is that there might be more integrations later and we will need to update those => maintenance becomes a bit of a problem
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Author
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That's a good point @alwx 👍
I'm not sure how this could be more generic though. Probably this needs to be handled on the js/core side.
alwx
approved these changes
Mar 11, 2026
Contributor
Author
|
Converting to draft since I noticed an issue with the bundling I want to verify manually before merging |
The previous regex matched on full package paths like @sentry/core/.../mcp-server/..., but Metro passes relative paths (./integrations/mcp-server/index.js) as the moduleName. Fix by: 1. Matching on relative path segments in moduleName 2. Using context.originModulePath to scope exclusion to @sentry/core Verified with actual Metro bundles: - Production: 169 modules and ~390KB removed - Dev: 169 modules and ~1.2MB removed Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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📢 Type of change
📜 Description
Adds a new Metro resolver (
withSentryExcludeServerOnlyResolver) that resolves server-only AI/MCP modules from@sentry/coreto empty modules on Android/iOS platforms.The resolver uses
context.originModulePathto scope the exclusion to imports originating from@sentry/core, and matches relative import paths to these server-only modules:integrations/mcp-server(MCP Server integration)tracing/openai(OpenAI instrumentation)tracing/anthropic-ai(Anthropic AI instrumentation)tracing/google-genai(Google GenAI instrumentation)tracing/vercel-ai(Vercel AI instrumentation)tracing/langchain(LangChain instrumentation)tracing/langgraph(LangGraph instrumentation)utils/ai(AI provider utilities)None of these are re-exported or used by
@sentry/react-native— they exist in@sentry/corefor Node.js server SDKs but leak into the RN bundle because Metro doesn't tree-shake them from the barrel export.💡 Motivation and Context
Closes #5628
Users reported that
@sentry/corebundles AI/MCP-related code into React Native apps even when no AI features are used. This follows the same pattern as the existingwithSentryResolverwhich excludes@sentry/replayfrom native bundles.💚 How did you test it?
Unit tests
withSentryExcludeServerOnlyResolver:@sentry/coreoriginModulePathis unavailablecontext.resolveRequestwhen no original resolverBundle verification
Built actual Metro bundles for the sample RN app and compared before/after:
function instrumentOpenAiClient,function wrapMcpServerWithSentry, etc.) go from present to zero in the output bundle.Safety verification
@sentry/core-*packages exist that could false-match the origin check@sentry/coreimports from the excluded modules (only the barrel file does)./tracing/trace.js,./utils/misc.js) — none match📝 Checklist
sendDefaultPIIis enabled🔮 Next steps
Long-term fix: add a
react-nativeexport condition in@sentry/core'spackage.jsonpointing to an AI-free entry point, so Metro can resolve it natively without needing a custom resolver.