Ship React Native and Expo SDK support

[niemyjski]

Summary

Ships first-class React Native and Expo support for the Exceptionless JavaScript SDK.

This adds a new @exceptionless/react-native package with:

• React Native client startup, queue/storage integration, environment data, lifecycle handling, and global JS error capture.
• Hermes/Metro stack parsing that produces structured Exceptionless stack frames and keeps the signature target on the real app frame.
• React Native and React error-boundary component stack capture under @error.data["@component_stack"].
• iOS native crash reporting through the native module and PLCrashReporter bridge.
• Expo autolinking/config-plugin packaging plus a dogfood Expo sample app.
• Agent skill documentation for adding/configuring the React Native and Expo client.

Review Fixes

• Replaced the regex-heavy React Native stack parser with deterministic string parsing to address the CodeQL polynomial-regex findings.
• Fixed the React Native error boundary so a missing fallback renders null after capture instead of re-rendering the crashing subtree.
• Fixed the Expo sample reset flow by remounting the boundary when the demo is reset.
• Forced Expo iOS dogfood scripts to use localhost Metro URLs so simulator stack frames do not regress to LAN IPs.
• Corrected the exported native crash frame type so image can be null.
• Prevented native crash slots from being cleared when the native parser reports a pending crash but returns no reports.
• Avoided duplicate session-end handling on iOS by ignoring transient inactive and ending only on background.
• Cleaned up the Expo plugin initialization warning and README copy.
• Added client-react-native.md to the Exceptionless JavaScript agent skill so future client-integration prompts route to the correct React Native package, Expo plugin, native crash caveats, localhost guidance, and source anchors.

Validation

• npm test - 342 passing
• npm run build - passed across packages and examples
• npm run lint - passed
• npm pack --workspace=packages/react-native --dry-run - package contents verified
• pod install in example/expo/ios - succeeded
• XcodeBuildMCP iPad Air 11-inch (M3) simulator build/run - succeeded
• npx tsc --noEmit -p example/expo/tsconfig.json - passed after the localhost script fix
• npm run start --workspace=example/expo -- --port 8099 - verified Metro waits on http://localhost:8099
• Manual Expo dogfood on iPad:
  • opened the dev build on Metro 8082
  • triggered the error boundary
  • dismissed the RN redbox
  • verified the fallback renders
  • tapped Reset and verified the trigger button returns
  • confirmed the event was enqueued and sent to http://localhost:7110

Notes

The pasted Hermes stack shape is now the expected one: the first parsed frame is the app frame (CrashyComponent, throwUnhandledError, or submitCaughtError), React/internal frames follow, native frames stay explicit, and synthetic Hermes ?anon_... wrappers no longer leak into the signature method when a real suffix exists.

[Copilot]

Pull request overview

This PR adds first-class React Native/Expo support to the SDK, including a new @exceptionless/react-native package with native iOS crash reporting, React Native stack parsing, lifecycle/global error handling, AsyncStorage-backed persistence, and an Expo sample app.

Changes:

• Added the React Native package, plugins, native iOS bridge, Expo plugin, docs, and test coverage.
• Updated React error-boundary data shape and React package peer/build metadata.
• Updated examples, local server URLs, workspace/test configuration, and React dependency pins.

Reviewed changes

Copilot reviewed 66 out of 74 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
vitest.config.ts	Adds React Native test project and mocks.
README.md	Documents React Native/Expo usage and updated local server URL.
packages/react/src/ExceptionlessErrorBoundary.tsx	Stores React component stack directly.
packages/react/package.json	Externalizes React in bundles and adds peer dependency.
packages/react-native/tsconfig.json	Adds package TypeScript config.
packages/react-native/test/**	Adds unit tests and React Native/AsyncStorage mocks.
packages/react-native/src/**	Adds RN client, plugins, storage, logging, error boundary, and exports.
packages/react-native/ios/**	Adds iOS native module and PLCrashReporter wrapper.
packages/react-native/expo-plugin/**	Adds Expo config plugin entrypoint.
packages/react-native/package.json	Defines new package metadata, exports, scripts, peers, and files.
packages/react-native/README.md	Adds package-specific documentation.
packages/react-native/LICENSE	Adds package license file.
packages/react-native/react-native.config.cjs	Adds RN CLI autolinking config.
packages/react-native/exceptionless-react-native.podspec	Adds iOS podspec.
packages/core/src/ExceptionlessClient.ts	Fixes startup callback/string union type.
packages/browser/src/BrowserExceptionlessClient.ts	Fixes startup callback/string union type.
packages/node/src/NodeExceptionlessClient.ts	Fixes startup callback/string union type.
packages/core/test/ExceptionlessClient.test.ts	Updates expected local server URL.
package.json	Adds RN workspace and root React dev deps.
example/**	Updates server URLs and React pins in existing examples.
example/expo/**	Adds Expo sample app for RN SDK testing.
eslint.config.mjs	Ignores RN config/plugin files.
.vscode/launch.json	Adds Expo iOS launch profile.
.prettierignore	Ignores Expo generated folders.

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[Copilot]

Pull request overview

Copilot reviewed 68 out of 76 changed files in this pull request and generated 4 comments.

[Copilot]

Pull request overview

Copilot reviewed 70 out of 78 changed files in this pull request and generated 2 comments.