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Beyond HMR: Understanding React's Fast Refresh

  • Fast Refresh is an official Hot Module Replacement (HMR) solution by React for React Native, applicable to the Web as well.
  • Fast Refresh updates module code and re-renders components when editing files.
  • Error handling in Fast Refresh allows fixing syntax and runtime errors without app reloads.
  • Fast Refresh preserves component state in functional components and Hooks, with some limitations for class components.
  • Tips for using Fast Refresh include adding // @refresh reset to force remounting components.
  • Hooks' behavior in Fast Refresh retains state unless parameters or the order of Hook calls change.
  • Fast Refresh integrates with React through Babel plugins, runtime mechanisms, and React's support.
  • Integrating Fast Refresh with HMR involves registration logic and hooking into HMR APIs.
  • Fast Refresh's core implementation is platform-independent, suitable for web applications with Webpack.
  • Leapcell offers a Next-Gen Serverless Platform for hosting Node.js projects with cost efficiency and scalability.

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