Nextjs Server side unmount

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Hi @snow warren. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave:

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In Next.js, when navigating to the same page, the page's state will not be reset by default as React does not unmount unless the parent component has changed. If you want to reset the state when unmounting a component, you can use the useEffect hook in React.

Here is an example of how you can reset the state when the component unmounts:

useEffect(() => {
  // Your logic here...

  // Cleanup function
  return () => {
    // Reset your global store here...
  };
}, []);

In the above code, the cleanup function (the function returned by useEffect) will be called when the component unmounts, and you can put your logic to reset the global store inside this function.

Another option is to use a React key to tell React to remount the component. This can be done for all pages by using a custom app:

import { useRouter } from 'next/router'
 
export default function MyApp({ Component, pageProps }) {
 const router = useRouter()
 return <Component key={router.asPath} {...pageProps} />
}

In the above code, a new key is assigned to the component whenever the route changes, which causes React to remount the component.

Please note that these methods work on the client side. For server-side, the state is not preserved between requests, so there's no built-in need to reset the state. If you have a specific use case where you need to reset the state on the server side, you might need to implement a custom solution.

For more information, you can refer to the Next.js documentation on Resetting state after navigation (https://nextjs.org/docs/pages/api-reference/functions/use-router#resetting-state-after-navigation) and Fast Refresh (https://nextjs.org/docs/architecture/fast-refresh#tips).

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