error handling pattern for fetch code example

Example 1: fetch error handling js

export async function getStaticProps(context) {
  const res = await fetch(`https://...`)
  const data = await res.json()

  //use this statement for the program not to crush but go back to the home page
  if (!data) {
    return {
      redirect: {
        destination: '/',
        permanent: false,
      },
    }
  }

  return {
    props: {}, // will be passed to the page component as props
  }
}

Example 2: error handling in fetch

fetch("/api/foo")  .then(response => {    if (!response.ok) { throw response }    return response.json()  //we only get here if there is no error  })  .then(json => {    doSomethingWithResult(json)  })  .catch(err => {    err.text().then(errorMessage => {      displayTheError(errorMessage)    })  })