🐛 Use unknown type for addReactError error parameter

[mormubis]

Motivation

addError already accepts error: unknown — addReactError should match. React 19's onUncaughtError callback types the error as unknown (anything can be thrown in JS), so calling addReactError directly from it produces a type error today.

Fixes #4858.

Changes

Widens the error parameter in addReactError from Error to unknown, aligning it with the existing addError signature. The implementation is unchanged — the cast (error as Error & { dd_context?: Context }) already handles narrowing when accessing error properties.

Test instructions

1. Run yarn test:unit --spec packages/browser-rum-react/src/domain/error/addReactError.spec.ts.
2. All 2 tests should pass.

Checklist

• Tested locally
• Tested on staging
• Added unit tests for this change.
• Added e2e/integration tests for this change.
• Updated documentation and/or relevant AGENTS.md file

[datadog-datadog-prod-us1]

 

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⚠️ Warnings

🚦 1 Pipeline job failed

DataDog/browser-sdk | e2e: [chromium]     

ℹ️ Info

No other issues found (see more)

🧪 All tests passed
❄️ No new flaky tests detected

🎯 Code Coverage (details)
• Patch Coverage: 100.00%
• Overall Coverage: 77.25% (+0.00%)

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[cit-pr-commenter-54b7da]

Bundles Sizes Evolution

📦 Bundle Name	Base Size	Local Size	𝚫	𝚫%	Status
Rum	178.22 KiB	178.22 KiB	0 B	0.00%	✅
Rum Profiler	8.22 KiB	8.22 KiB	0 B	0.00%	✅
Rum Recorder	21.12 KiB	21.12 KiB	0 B	0.00%	✅
Logs	55.53 KiB	55.53 KiB	0 B	0.00%	✅
Rum Slim	136.28 KiB	136.28 KiB	0 B	0.00%	✅
Worker	22.96 KiB	22.96 KiB	0 B	0.00%	✅

[chatgpt-codex-connector]

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