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Alternative approach to #35282 for validating effect deps in the compiler that builds on the machinery in ValidateExhaustiveDependencies. Key changes to that pass: * Refactor to track the dependencies of array expressions as temporaries so we can look them up later if they appear as effect deps. * Instead of not storing temporaries for LoadLocals of locally created variables, we store the temporary but also propagate the local-ness through. This allows us to record deps at the top level, necessary for effect deps. Previously the pass was only ever concerned with tracking deps within function expressions. * Refactor the bulk of the dependency-checking logic from `onFinishMemoize()` into a standalone helper to use it for the new `onEffect()` helper as well. * Add a new ErrorCategory for effect deps, use it for errors on effects * Put the effect dep validation behind a feature flag * Adjust the error reason for effect errors --------- Co-authored-by: Jack Pope <jackpope1@gmail.com>
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.