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This project supports Hot Module Replacement (HMR) for both content script UIs and extension UIs (e.g., Options Page, Popup, Sidepanel). However, please note the following caveats:

  • Requires vite version 5.4.11 or lower (see crxjs/chrome-extension-tools#971).
  • ALWAYS explicitly specify the port number for the development server in vite.config.ts. Using an incorrect port will prevent HMR from functioning.
  • DO NOT use inline imports within background scripts or service workers, as this will completely break HMR.
  • HMR support is limited to React components and directly imported CSS modules. Changes to other assets, such as inline-imported (?inline) CSS modules, constants, or utility functions, will require a full page reload to take effect.