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react/compiler
Joe Savona e9b19a6732 [compiler] Correctly infer context mutation places as outer (context) places
The issue in the previous PR was due to a ContextMutation function effect having a place that wasn't one of the functions' context variables. What was happening is that the `getContextRefOperand()` helper wasn't following aliases. If an operand had a context type, we recorded the operand as the context place — but instead we should be looking through to the context places of the abstract value.

With this change the fixture now fails for a different reason — we infer this as a mutation of `params` and reject it because `params` is frozen (hook return value). This case is clearly a false positive: the mutation is on the outer, new `nextParams` object and can't possibly mutate `params`. Need to think more about what to do here but this is clearly more precise in terms of which variable we record as the context variable.

[ghstack-poisoned]
2025-05-03 16:25:55 +09:00
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React Compiler

React Compiler is a compiler that optimizes React applications, ensuring that only the minimal parts of components and hooks will re-render when state changes. The compiler also validates that components and hooks follow the Rules of React.

More information about the design and architecture of the compiler are covered in the Design Goals.

More information about developing the compiler itself is covered in the Development Guide.