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[Flight] Fix dev-only crash when passing elements into 3rd party renderers#35690

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eps1lon wants to merge 1 commit intofacebook:mainfrom
eps1lon:sebbie/02-04-_flight_fix_dev-only_crash_when_nesting_3rd_party_components
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[Flight] Fix dev-only crash when passing elements into 3rd party renderers#35690
eps1lon wants to merge 1 commit intofacebook:mainfrom
eps1lon:sebbie/02-04-_flight_fix_dev-only_crash_when_nesting_3rd_party_components

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@eps1lon
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@eps1lon eps1lon commented Feb 4, 2026

Ran into a crash in Next.js in addAsyncInfo with Cannot redefine property: _debugInfo.

Fix is purely motivated by the types. Need to understand crash conditions and if the defect isn't somewhere higher up.

@github-actions github-actions bot added the React Core Team Opened by a member of the React Core Team label Feb 4, 2026
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Comparing: f84ce5a...d68d7c4

Critical size changes

Includes critical production bundles, as well as any change greater than 2%:

Name +/- Base Current +/- gzip Base gzip Current gzip
oss-stable/react-dom/cjs/react-dom.production.js = 6.84 kB 6.84 kB +0.05% 1.88 kB 1.88 kB
oss-stable/react-dom/cjs/react-dom-client.production.js = 610.35 kB 610.35 kB = 107.89 kB 107.89 kB
oss-experimental/react-dom/cjs/react-dom.production.js = 6.84 kB 6.84 kB +0.11% 1.88 kB 1.88 kB
oss-experimental/react-dom/cjs/react-dom-client.production.js = 676.28 kB 676.28 kB = 118.85 kB 118.85 kB
facebook-www/ReactDOM-prod.classic.js = 695.91 kB 695.91 kB = 122.28 kB 122.28 kB
facebook-www/ReactDOM-prod.modern.js = 686.29 kB 686.29 kB = 120.68 kB 120.68 kB

Significant size changes

Includes any change greater than 0.2%:

(No significant changes)

Generated by 🚫 dangerJS against d68d7c4

@meta-cla meta-cla bot added the CLA Signed label Feb 4, 2026
@eps1lon eps1lon changed the title [Flight] Fix dev-only crash when nesting 3rd party components [Flight] Fix dev-only crash when passing elements into 3rd party renderers Feb 5, 2026
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