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This bug was reported via our wg and appears to only affect values created as a ref. Currently, postfix operators used in a callback gets compiled to: ```js modalId.current = modalId.current + 1; // 1 const id = modalId.current; // 1 return id; ``` which is semantically incorrect. The postfix increment operator should return the value before incrementing. In other words something like this should have been compiled instead: ```js const id = modalId.current; // 0 modalId.current = modalId.current + 1; // 1 return id; ``` This bug does not trigger when the incremented value is a plain primitive, instead there is a TODO bailout. |
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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.