[Compiler Bug]: crashes with “Expected a node for all scopes” #37228

What kind of issue is this?

• React Compiler core (the JS output is incorrect, or your app works incorrectly after optimization)
• babel-plugin-react-compiler (build issue installing or using the Babel plugin)
• eslint-plugin-react-hooks (build issue installing or using the eslint plugin)
• react-compiler-healthcheck (build issue installing or using the healthcheck script)

Link to repro

https://playground.react.dev/#N4Igzg9grgTgxgUxALhASwLYAcIwC4AEwBUYCAyngIZ4IEC+BAZjBBgQDogwJVx5cA3BwB2CAB458zKCP5oIIggCUEWVgAoAlEVEECcRWEIBtGFQDuAXQIBeEmUo0EAHmMw0IgOYEAPiREAEwQmTwRAgD4NWWDQsUCtYSUDI0IANzsCDW07CN1k-TwYAE98-XKCHjxYJWJzCwYCAH5KywJkANiwwKSKxjgaOAALIno9cqqazpDu3oYtbTnJmCUXQLQ0iOA0+hcAenXNpLGREAAaEEMRUK8UEGBxvb3DbDQAGxoFEQBZCGCOrhUN5vLiiejncBDCAWACSIloKyBYBQTCRCHoQA

Repro steps

Open the above playground link, compile the code with babel-plugin-react-compiler, or run the code through tooling that wraps the Rust react-compiler port, like oxlint.

How often does this bug happen?

Every time

What version of React are you using?

19.2.4

What version of React Compiler are you using?

main @ ec61f18 (playground, 2026-08-06)