<StrictMode>
enables extra development-only checks that help you find bugs early.
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Built-in React Components – ReactSX nodes together. <Profiler> lets you measure rendering performance of a React tree programmatically. <Suspense> lets you display a fallback while the child components are loading. <span><StrictMode> enables extra development-only checks that help you find bugs early. Your own components You can also define your own components as JavaScript functions. How do you like these docs? Take our survey! ©2023 Learn React Quick Start Installation Describing t Summary
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