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`enablePropagateScopeDepsHIR` is now used extensively in Meta. This has been tested for over two weeks in our e2e tests and production. The rest of this stack deletes `LoweredFunction.dependencies`, which the non-hir version of `PropagateScopeDeps` depends on. To avoid a more forked HIR (non-hir with dependencies and hir with no dependencies), let's go ahead and clean up the non-hir version of PropagateScopeDepsHIR. Note that all fixture changes in this PR were previously reviewed when they were copied to `propagate-scope-deps-hir-fork`. Will clean up / merge these duplicate fixtures in a later PR ' --- [//]: # (BEGIN SAPLING FOOTER) Stack created with [Sapling](https://sapling-scm.com). Best reviewed with [ReviewStack](https://reviewstack.dev/facebook/react/pull/31199). * #31202 * #31203 * #31201 * #31200 * #31346 * __->__ #31199
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.