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We currently inline IIFEs by creating a temporary and a labeled block w the original code. The original return statements turn into an assignment to the temporary and break out of the label. However, many cases of IIFEs are due to inlining of manual `useMemo()`, and these cases often have only a single return statement. Here, the output is cleaner if we avoid the temporary and label - so that's what we do in this PR. Note that the most complex part of the change is actually around ValidatePreserveExistingMemo - we have some logic to track the IIFE temporary reassignmetns which needs to be updated to handle the simpler version of inlining. --- [//]: # (BEGIN SAPLING FOOTER) Stack created with [Sapling](https://sapling-scm.com). Best reviewed with [ReviewStack](https://reviewstack.dev/facebook/react/pull/33726). * __->__ #33726 * #33725 |
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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.