old_contents: import { useEffect } from 'react'
  import { useDispatch } from 'react-redux'
  import { startClock, serverRenderClock, initializeStore } from '../store'
  import Examples from '../components/examples'
  
  const Index = () => {
    const dispatch = useDispatch()
    useEffect(() => {
      setInterval(() => dispatch(startClock(), 1000))
    }, [dispatch])
  
    return <Examples />
  }
  
  export async function getStaticProps() {
    const store = initializeStore()
    store.dispatch(serverRenderClock())
  
    return {
      props: {},
    }
  }
  
  export default Index
  
new_contents: import { useEffect } from 'react'
  import { useDispatch } from 'react-redux'
  import { startClock, serverRenderClock, initializeStore } from '../store'
  import Examples from '../components/examples'
  
  const Index = () => {
    const dispatch = useDispatch()
    useEffect(() => {
      setInterval(() => dispatch(startClock()), 1000)
    }, [dispatch])
  
    return <Examples />
  }
  
  export async function getStaticProps() {
    const store = initializeStore()
    store.dispatch(serverRenderClock())
  
    return {
      props: {},
    }
  }
  
  export default Index
  
subject: Fix call to setInterval (#22357)