`onHydrationEnd()` hook

You can use the onHydrationEnd() hook to implement initialization that needs to be executed once the page has finished hydrating.

The onHydrationEnd() hook requires Client Routing.

// /pages/+onHydrationEnd.js
// Environment: browser
 
export { onHydrationEnd }
 
// The onHydrationEnd() hook is called after the onRenderClient() hook finishes rendering the
// first page the user navigates to. (The onHydrationEnd() hook isn't called upon subsequent
// page navigation.)
async function onHydrationEnd(pageContext) {
  console.log('The page is now interactive')
}

TypeScript

// /pages/+onHydrationEnd.ts
// Environment: browser
 
export { onHydrationEnd }
 
import type { OnHydrationEndAsync } from 'vike/types'
 
const onHydrationEnd: OnHydrationEndAsync = async (
  pageContext
): ReturnType<OnHydrationEndAsync> => {
  // ...
}

Don't omit ReturnType<OnHydrationEndAsync> otherwise TypeScript won't strictly check the return type.

See API > pageContext > Typescript for more information on how to extend pageContext with your own extra properties.

onHydrationEnd() hook

TypeScript

See also

`onHydrationEnd()` hook