[NOJIRA][FIX][V2] Skip Babel and Metro plugins for web platform builds#1278
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cdn34dd merged 1 commit intofeature/v2from Apr 28, 2026
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- Babel plugin: skip all transforms when caller platform is 'web' - Metro serializer (withDatadogMetroConfig): skip debug ID injection for web - Metro serializer (Expo plugin): skip debug ID injection for web
sbarrio
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Apr 28, 2026
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Pull request overview
Adds platform awareness to Datadog’s React Native build tooling so that web bundles do not receive native-only Babel/Metro instrumentation artifacts.
Changes:
- Skip Datadog Babel plugin transforms when
caller.platform === 'web'. - Skip Metro Debug ID injection for
graph.transformOptions.platform === 'web'(serializer + Expounstable_beforeAssetSerializationPluginpath). - Add/extend unit tests to validate web skipping behavior (serializer + babel plugin).
Reviewed changes
Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.
| File | Description |
|---|---|
| packages/react-native-babel-plugin/src/index.ts | Adds a web platform guard intended to bypass plugin transforms. |
| packages/react-native-babel-plugin/test/plugin.test.ts | Adds a test asserting no Datadog artifacts are injected for web builds. |
| packages/core/src/metro/plugin/metroSerializer.ts | Adds web platform guards for serializer Debug ID injection and the Expo pre-asset plugin path. |
| packages/core/src/metro/tests/metro.test.ts | Adds a test asserting serializer skips Debug ID injection on web. |
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What does this PR do?
For cross-platform React Native apps that also target web (e.g., Expo with web support), the Babel plugin and Metro serializer were running unconditionally on all platforms, injecting native-only code into web bundles.
This PR adds awareness for the web platform so that web builds are skipped:
@datadog/mobile-react-native-babel-plugin: Skips all transforms when it's 'web'. This prevents injection ofDdBabelInteractionTrackingwrappers,__ddExtractTexthelpers, and the__DD_RN_BABEL_PLUGIN_ENABLED__flag into web bundles.createDatadogMetroSerializer(used by withDatadogMetroConfig): Skips debug ID injection for web builds.unstable_beforeAssetSerializationPlugin(used by getDatadogExpoConfig): Same platform check for the Expo-specific code path.When checking on a resulting bundle for an expo app built for the web, all Datadog artifacts created by babel & expo were eliminated.
DdBabelInteractionTracking__ddExtractText_datadogDebugIdsdatadog-debug-idMotivation
Issue #1204
Additional Notes
Anything else we should know when reviewing?
Review checklist (to be filled by reviewers)