Verified Solution[facebook/react] [Compiler Bug]: React Compiler silently skips custom hooks whose only hook call is use()
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### ROOT CAUSE
The compiler's hook detection mechanism does not account for `use()` calls, which are valid hook calls. When a custom hook only contains a `use()` call, it lacks any built-in hook calls (e.g., `useState`, `useEffect`), causing the compiler to incorrectly skip it. This results in the hook not being recognized, leading to potential runtime errors.
### CODE FIX
Modify the hook detection in the compiler to include `use()` calls. Here's the patch:
```diff
// In the hook detection code (e.g., in the hook-checking function)
function isHook(node) {
// ... existing code ...
const hasHookCall = node.body.body.some(statement => {
if (statement.type === 'ExpressionStatement' && statement.expression.type === 'CallExpression') {
const call = statement.expression;
const calleeName = call.callee.name;
// Check if the call is a built-in hook or use()
return (
builtInHooks.includes(calleeName) ||
calleeName === 'use' && // Add check for 'use'
// Ensure the call is valid (optional additional checks)
(call.arguments.length === 0 || // Optional: if use() requires arguments, adjust conditionally
... // Add any other necessary conditions
)
);
}
return false;
});
// ... rest of the function ...
}
```
This change ensures hooks with only `use()` calls are properly detected and included.
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