[Flight] Preserve leading `U+FEFF` in text rows #37625

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unstubbable opened 4:49am on September 14, 2026 wants to merge 123 Δ into facebook/react main from
hl/bom-fix

Pull request #37625 quality checks

Code files and functions touched by this pull request are analyzed below.

Quality targets

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Target name Target value This PR
Maximum Diff Delta per PR 500 123
Maximum comment count per PR 10 3
Pull request maximum business days between activity 3 5
Pull request maximum business days open 5 5

Coupled files

Are there any files from this commit that are always committed alongside another file? This often suggests that there exists code coupling to potentially remove. Read more about code coupling

Committed together % Code file
Coupled code file
Commits in PR with both
100 packages/react-noop-renderer/src/ReactNoopFlightClient.js
packages/react-client/src/ReactFlightClient.js
1
86 packages/react-server-dom-webpack/src/__tests__/ReactFlightDOMNode-test.js
packages/react-server-dom-webpack/src/__tests__/ReactFlightDOMEdge-test.js
1
80 packages/react-client/src/ReactFlightClientStreamConfigNode.js
packages/react-client/src/ReactFlightClient.js
1

️ Biggest functions grown or shrunk by pull request

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Could not find any functions changed by this pull request.