feat(core): Support applicationKey and moduleMetadata in Metro config by alwx · Pull Request #6863 · getsentry/sentry-react-native

alwx · 2026-10-09T09:35:08Z

📢 Type of change

Bugfix
New feature
Enhancement
Refactoring

📜 Description

This PR adds the applicationKey and moduleMetadata options to withSentryConfig and getSentryExpoConfig. The SDK injects the same module metadata snippet as @sentry/bundler-plugins as a virtual premodule, also in development bundles and in each Expo chunk. The PR also exports thirdPartyErrorFilterIntegration from @sentry/react-native.

💡 Motivation and Context

Without module metadata, thirdPartyErrorFilterIntegration sees every frame as third-party code, so a drop-… behavior drops all events. Fixes #6858.

The snippet is a local copy, and a test pins it to generateModuleMetadataInjectorCode. Only the object form of moduleMetadata is supported, because Metro does not know the org, project, or release.

💚 How did you test it?

I added unit tests for the snippet, the metadata assembly, the serializer, the Expo plugin, and the Metro config options. All SDK and tool tests pass.

📝 Checklist

I added tests to verify changes.
No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
I updated the docs if needed.
I updated the wizard if needed.
All tests passing.
Public API changes reviewed by another Mobile SDK team member or implemented according to the develop docs spec.
No breaking changes.

🔮 Next steps

Document the new options and the integration in the React Native docs.

🤖 Generated with Claude Code

github-actions · 2026-10-09T09:35:29Z

Semver Impact of This PR

⚪ None (no version bump detected)

📋 Changelog Preview

This is how your changes will appear in the changelog.
Entries from this PR are highlighted with a left border (blockquote style).

feat(core): Support applicationKey and moduleMetadata in Metro config by alwx in #6863

chore(deps): bump nx from 22.7.7 to 22.7.12 by dependabot in #6857
chore(deps): bump compression from 1.7.5 to 1.8.2 by dependabot in #6856
chore(deps): bump postcss-selector-parser from 7.1.4 to 7.1.6 by dependabot in #6855
chore(deps): bump source-map-js from 1.2.1 to 1.2.2 by dependabot in #6854
chore(deps): bump proxy-addr from 2.0.7 to 2.0.8 by dependabot in #6853
chore(deps): bump handlebars from 4.7.9 to 4.7.10 by dependabot in #6862
chore(deps): update Wizard to v8.0.1 by github-actions in #6852

_{🤖 This preview updates automatically when you update the PR.}

github-actions · 2026-10-09T09:35:50Z

	Messages
📖	Do not forget to update Sentry-docs with your feature once the pull request gets approved.

Generated by 🚫 dangerJS against 4e05634

Inject the module metadata of @sentry/bundler-plugins as a virtual premodule, so thirdPartyErrorFilterIntegration can find the frames of the application. Export thirdPartyErrorFilterIntegration. Fixes #6858 Co-Authored-By: Claude Opus 5.5 <[email protected]>

Add a test that shows that thirdPartyErrorFilterIntegration applies the injected module metadata on ReactNativeClient. Co-Authored-By: Claude <[email protected]>

cursor

Cursor Bugbot has reviewed your changes and found 1 potential issue.

^{❌ Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.}

Want reviews to match your repository better? Bugbot Learning can learn team-specific rules from PR activity. A team admin can enable Learning in the Cursor dashboard.

^{Reviewed by Cursor Bugbot for commit 4e05634. Configure here.}

cursor · 2026-10-09T13:21:11Z

    unstable_beforeAssetSerializationPlugins: [
      ...(options.unstable_beforeAssetSerializationPlugins || []),
      ...((options.injectReleaseForWeb ?? true) ? [unstableReleaseConstantsPlugin(projectRoot)] : []),
+      ...(moduleMetadata ? [unstableBeforeAssetSerializationModuleMetadataPlugin(moduleMetadata)] : []),


Expo skips development metadata injection

Medium Severity

getSentryExpoConfig only registers unstableBeforeAssetSerializationModuleMetadataPlugin and never prepends the metadata module onto serializer preModules. Expo applies that plugin when exporting chunks, while expo start uses baseJSBundle with the incoming premodules and does not run those plugins. Development Expo bundles therefore never define _sentryModuleMetadata, so thirdPartyErrorFilterIntegration still treats every frame as third-party — the failure this change is meant to fix, including Expo web where browser-extension filtering is the documented use case. withSentryConfig already injects through createSentryMetroSerializer before the hot/dev early return; Expo has no equivalent wrapper.

Additional Locations (2)

packages/core/src/js/tools/metroconfig.ts#L149-L150

packages/core/src/js/tools/sentryMetroSerializer.ts#L74-L81

^{Triggered by project rule: PR Review Guidelines for Cursor Bot}

^{Reviewed by Cursor Bugbot for commit 4e05634. Configure here.}

The Expo dev server also runs unstable_beforeAssetSerializationPlugins before baseJSBundle (see createDefaultExportCustomSerializer in @expo/metro-config), so Expo dev bundles get the metadata module.

antonis

LGTM once the CI is 🟢

sentry · 2026-10-12T08:48:12Z

📲 Install Builds

Android

🔗 App Name	App ID	Version	Configuration
Sentry RN	io.sentry.reactnative.sample	8.30.0 (110)	Release

⚙️ sentry-react-native Build Distribution Settings

github-actions · 2026-10-12T08:52:23Z

iOS (legacy) Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	3867.04 ms	1235.88 ms	-2631.16 ms
Size	5.15 MiB	6.95 MiB	1.80 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
`a5d243c`+dirty	3842.35 ms	1214.29 ms	-2628.06 ms
`6a3eb4c`+dirty	3854.77 ms	1230.91 ms	-2623.86 ms
`e763471`+dirty	3841.16 ms	1218.06 ms	-2623.09 ms
`6acdf1d`+dirty	3844.33 ms	1212.96 ms	-2631.38 ms
`d61b289`+dirty	3874.56 ms	1236.61 ms	-2637.94 ms
`ab203f9`+dirty	3848.07 ms	1219.71 ms	-2628.35 ms
`1a2e7e0`+dirty	3842.49 ms	1220.04 ms	-2622.45 ms
`0307fa4`+dirty	3829.83 ms	1212.15 ms	-2617.68 ms
`3a829f0`+dirty	3839.76 ms	1214.69 ms	-2625.06 ms
`23598c3`+dirty	1207.00 ms	1209.90 ms	2.90 ms

App size

Revision	Plain	With Sentry	Diff
`a5d243c`+dirty	5.15 MiB	6.68 MiB	1.53 MiB
`6a3eb4c`+dirty	5.08 MiB	6.68 MiB	1.60 MiB
`e763471`+dirty	4.98 MiB	6.51 MiB	1.53 MiB
`6acdf1d`+dirty	4.98 MiB	6.51 MiB	1.53 MiB
`d61b289`+dirty	5.15 MiB	6.95 MiB	1.80 MiB
`ab203f9`+dirty	4.98 MiB	6.51 MiB	1.53 MiB
`1a2e7e0`+dirty	4.98 MiB	6.46 MiB	1.49 MiB
`0307fa4`+dirty	4.98 MiB	6.46 MiB	1.48 MiB
`3a829f0`+dirty	5.15 MiB	6.70 MiB	1.54 MiB
`23598c3`+dirty	3.38 MiB	4.80 MiB	1.42 MiB

github-actions · 2026-10-12T08:52:40Z

Android (legacy) Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	559.89 ms	618.24 ms	58.35 ms
Size	50.56 MiB	56.62 MiB	6.06 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
`0b1b5e3`+dirty	416.42 ms	470.58 ms	54.16 ms
`a858ac3`+dirty	426.50 ms	484.82 ms	58.32 ms
`1a2e7e0`+dirty	416.61 ms	445.46 ms	28.85 ms
`a216cb9`+dirty	458.66 ms	531.47 ms	72.81 ms
`88735e9`+dirty	429.04 ms	484.17 ms	55.13 ms
`20fbd51`+dirty	487.89 ms	535.60 ms	47.71 ms
`7a89652`+dirty	537.76 ms	567.84 ms	30.08 ms
`a0a3177`+dirty	441.27 ms	499.86 ms	58.59 ms
`3d536d1`+dirty	524.34 ms	547.32 ms	22.98 ms
`ed70c7f`+dirty	452.43 ms	490.02 ms	37.59 ms

App size

Revision	Plain	With Sentry	Diff
`0b1b5e3`+dirty	48.30 MiB	53.60 MiB	5.29 MiB
`a858ac3`+dirty	49.74 MiB	55.08 MiB	5.34 MiB
`1a2e7e0`+dirty	49.74 MiB	54.82 MiB	5.07 MiB
`a216cb9`+dirty	49.74 MiB	55.08 MiB	5.34 MiB
`88735e9`+dirty	49.74 MiB	54.82 MiB	5.07 MiB
`20fbd51`+dirty	49.74 MiB	54.81 MiB	5.07 MiB
`7a89652`+dirty	48.30 MiB	53.60 MiB	5.30 MiB
`a0a3177`+dirty	49.74 MiB	55.37 MiB	5.63 MiB
`3d536d1`+dirty	49.74 MiB	55.26 MiB	5.52 MiB
`ed70c7f`+dirty	50.56 MiB	56.62 MiB	6.06 MiB

github-actions · 2026-10-12T09:03:16Z

Android (new) Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	449.46 ms	482.60 ms	33.14 ms
Size	50.56 MiB	56.62 MiB	6.06 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
`bc8f61e`+dirty	419.31 ms	453.39 ms	34.08 ms
`0a9e622`+dirty	425.22 ms	457.00 ms	31.78 ms
`bf168a4`+dirty	430.60 ms	459.31 ms	28.71 ms
`4953e94`+dirty	398.80 ms	431.81 ms	33.01 ms
`68ae91b`+dirty	515.04 ms	578.08 ms	63.04 ms
`b9bebee`+dirty	500.50 ms	536.42 ms	35.92 ms
`3817909`+dirty	357.52 ms	391.52 ms	34.00 ms
`4e0ba9c`+dirty	421.39 ms	455.80 ms	34.41 ms
`635676f`+dirty	420.43 ms	428.23 ms	7.80 ms
`be120d6`+dirty	514.67 ms	543.17 ms	28.49 ms

App size

Revision	Plain	With Sentry	Diff
`bc8f61e`+dirty	49.74 MiB	55.09 MiB	5.35 MiB
`0a9e622`+dirty	49.74 MiB	55.09 MiB	5.34 MiB
`bf168a4`+dirty	49.74 MiB	55.09 MiB	5.35 MiB
`4953e94`+dirty	43.94 MiB	48.94 MiB	5.00 MiB
`68ae91b`+dirty	49.74 MiB	54.79 MiB	5.05 MiB
`b9bebee`+dirty	48.30 MiB	53.58 MiB	5.28 MiB
`3817909`+dirty	43.94 MiB	48.94 MiB	5.00 MiB
`4e0ba9c`+dirty	48.30 MiB	53.49 MiB	5.19 MiB
`635676f`+dirty	50.56 MiB	56.46 MiB	5.90 MiB
`be120d6`+dirty	49.74 MiB	55.36 MiB	5.62 MiB

github-actions · 2026-10-12T09:05:10Z

iOS (new) Performance metrics 🚀

	Plain	With Sentry	Diff
Startup time	3867.83 ms	1236.56 ms	-2631.27 ms
Size	5.15 MiB	6.95 MiB	1.80 MiB

Baseline results on branch: main

Startup times

Revision	Plain	With Sentry	Diff
`b9bebee`+dirty	3858.02 ms	1231.92 ms	-2626.11 ms
`d771cd5`+dirty	3841.09 ms	1224.64 ms	-2616.44 ms
`21a1e70`+dirty	3826.22 ms	1217.74 ms	-2608.47 ms
`a858ac3`+dirty	3850.72 ms	1226.35 ms	-2624.37 ms
`41d6254`+dirty	3849.78 ms	1233.91 ms	-2615.86 ms
`9ad4522`+dirty	3862.28 ms	1226.27 ms	-2636.01 ms
`7d6fd3a`+dirty	1210.89 ms	1217.63 ms	6.74 ms
`d0e3b3e`+dirty	3846.64 ms	1226.27 ms	-2620.38 ms
`d61b289`+dirty	3851.37 ms	1229.59 ms	-2621.78 ms
`71abba0`+dirty	3852.70 ms	1224.53 ms	-2628.16 ms

App size

Revision	Plain	With Sentry	Diff
`b9bebee`+dirty	5.15 MiB	6.68 MiB	1.53 MiB
`d771cd5`+dirty	4.98 MiB	6.55 MiB	1.57 MiB
`21a1e70`+dirty	4.98 MiB	6.46 MiB	1.49 MiB
`a858ac3`+dirty	4.98 MiB	6.51 MiB	1.53 MiB
`41d6254`+dirty	5.15 MiB	6.70 MiB	1.54 MiB
`9ad4522`+dirty	4.98 MiB	6.56 MiB	1.58 MiB
`7d6fd3a`+dirty	3.38 MiB	4.77 MiB	1.39 MiB
`d0e3b3e`+dirty	4.98 MiB	6.51 MiB	1.53 MiB
`d61b289`+dirty	5.15 MiB	6.95 MiB	1.80 MiB
`71abba0`+dirty	5.15 MiB	6.67 MiB	1.52 MiB

alwx force-pushed the alwx/feature/6858 branch from e1bd076 to e53db48 Compare October 9, 2026 09:36

github-advanced-security Bot found potential problems Oct 9, 2026

View reviewed changes

Comment thread packages/core/src/js/tools/utils.ts Fixed

sentry-warden Bot reviewed Oct 9, 2026

View reviewed changes

Comment thread packages/core/etc/sentry-react-native.api.md

fix(core): Escape unsafe characters in the module metadata snippet

f0426cf

Add a test that shows that thirdPartyErrorFilterIntegration applies the injected module metadata on ReactNativeClient. Co-Authored-By: Claude <[email protected]>

alwx marked this pull request as ready for review October 9, 2026 13:13

Merge branch 'main' into alwx/feature/6858

4e05634

alwx requested review from a team, antonis and lucas-zimerman as code owners October 9, 2026 13:13

cursor Bot reviewed Oct 9, 2026

View reviewed changes

antonis added the ready-to-merge Triggers the full CI test suite label Oct 12, 2026

antonis approved these changes Oct 12, 2026

View reviewed changes

Conversation

alwx commented Oct 9, 2026

📢 Type of change

📜 Description

💡 Motivation and Context

💚 How did you test it?

📝 Checklist

🔮 Next steps

Uh oh!

github-actions Bot commented Oct 9, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Semver Impact of This PR

Uh oh!

github-actions Bot commented Oct 9, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

Uh oh!

Uh oh!

cursor Bot left a comment

Choose a reason for hiding this comment

Uh oh!

cursor Bot Oct 9, 2026

Choose a reason for hiding this comment

Expo skips development metadata injection

Uh oh!

alwx Oct 12, 2026

Choose a reason for hiding this comment

Uh oh!

antonis left a comment

Choose a reason for hiding this comment

Uh oh!

sentry Bot commented Oct 12, 2026

📲 Install Builds

Android

Uh oh!

github-actions Bot commented Oct 12, 2026

iOS (legacy) Performance metrics 🚀

Baseline results on branch: main

Startup times

App size

Uh oh!

github-actions Bot commented Oct 12, 2026

Android (legacy) Performance metrics 🚀

Baseline results on branch: main

Startup times

App size

Uh oh!

github-actions Bot commented Oct 12, 2026

Android (new) Performance metrics 🚀

Baseline results on branch: main

Startup times

App size

Uh oh!

github-actions Bot commented Oct 12, 2026

iOS (new) Performance metrics 🚀

Baseline results on branch: main

Startup times

App size

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

3 participants

github-actions Bot commented Oct 9, 2026 •

edited

Loading

github-actions Bot commented Oct 9, 2026 •

edited

Loading