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Mike Vitousek
e49c992f7b
Summary: We can tighten our criteria for what is a component by requiring that a component or hook contain JSX or hook calls directly within its body, excluding nested functions . Currently, if we see them within the body anywhere -- including nested functions -- we treat it as a component if the other requirements are met. This change makes this stricter. We also now expect components (but not necessarily hooks) to have return statements, and those returns must be potential React nodes (we can reject functions that return function or object literals, for example). ghstack-source-id: 4507cc3955216c564bf257c0b81bfb551ae6ae55 Pull Request resolved: https://github.com/facebook/react/pull/29865
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.