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We try to merge consecutive reactive scopes that will always invalidate together, but there's one common case that isn't handled. ```js const y = [[x]]; ``` Here we'll create two consecutive scopes for the inner and outer array expressions. Because the input to the second scope is a temporary, they'll merge into one scope. But if we name the inner array, the merging stops: ```js const array = [x]; const y = [array]; ``` This is because the merging logic checks if all the dependencies of the second scope are outputs of the first scope, but doesn't account for renaming due to LoadLocal/StoreLocal. The fix is to track these temporaries. --- [//]: # (BEGIN SAPLING FOOTER) Stack created with [Sapling](https://sapling-scm.com). Best reviewed with [ReviewStack](https://reviewstack.dev/facebook/react/pull/34049). * __->__ #34049 * #34047 * #34044 |
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babel-plugin-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.
This package contains the React Compiler Babel plugin use in projects that make use of Babel. You can find instructions for using this plugin here: https://react.dev/learn/react-compiler