dillon1000/react

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[compiler] Prune dependencies that are only used by useRef or useState

Summary: jmbrown215 recently had an observation that the arguments to useState/useRef are only used when a component renders for the first time, and never afterwards. We can skip more computation that we previously could, with reactive blocks that previously recomputed values when inputs changed now only ever computing them on the first render.

ghstack-source-id: 5d044ef787a7da901c70990f4399aa90c9b96802
Pull Request resolved: https://github.com/facebook/react/pull/29653
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Mike Vitousek authored c69211a9dfa683038b1a758aba2ca09c7862a6d3 Parent 5c420e3
Changed paths8 files
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M compiler/packages/babel-plugin-react-compiler/src/Entrypoint/Pipeline.ts ModifiedA compiler/packages/babel-plugin-react-compiler/src/ReactiveScopes/PruneInitializationDependencies.ts AddedA compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/useState-and-other-hook-unpruned-dependency.expect.md AddedA compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/useState-and-other-hook-unpruned-dependency.js AddedM compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/useState-pruned-dependency-change-detect.expect.md ModifiedA compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/useState-unpruned-dependency.expect.md AddedA compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/useState-unpruned-dependency.js AddedM compiler/packages/snap/src/SproutTodoFilter.ts Modified
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