[Compiler Bug]: React Compiler silently skips custom hooks whose only hook call is use()

[carlbergman]

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/#N4Igzg9grgTgxgUxALhASwLYAcIwC4AEwBcMCAhnggMIQB2VAHngDQFRgJsc31OEBfAgDMYEDAQDkZcnDySA3AB06KuPTCEAsgE9aDBMwIBeEjKr7+BADxECAN3IAbKAmQFNMNHQDmBIQB8BAAUdFBOTgCEAJTKqnSGOPgiUHRyaPTsnLqWhngA6mh4ABYAqpzB0UQqBCQahMSOLgj+JlkIwTl8ebE1BGR4sHR2Ta7+cQIqKom4hMKp6Zk8XQbMhSXlvKt4ldXDdXSaI85jQqY8ucydet3MvfsDQ8fN4yoCICwg6nTCaD4o6GwswIeB0WBaxAACi4fN4APJYPAZQ6tUTiKQAI3IGIQTgAtFgYd48TI5Hj1Ng0E4EDAAPQAEzQmkUUzowWAfVptIpWCplGRWgg9LcBCUIGcTjFbw8-LAvwQYAI0KgsLoCKRGliH3AxQgAHcAJIGGB0ZxgFDCM0IARAA

Repro steps

1. Create a context MyContext and a custom hook useMyContext that only calls use(MyContext)
2. Compile in the default infer compilation mode.
3. Observe that useMyContext is silently skipped by the compiler, no memoization is applied.
4. Change use(MyContext) to useContext(MyContext), the compiler now recognizes the function as containing a hook call and compiles it correctly.

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?

babel-plugin-react-compiler 1.0.0