async fetch

async-fetch.md

https://stackoverflow.com/questions/59728992/fetch-api-can-await-res-json-fail-after-a-completed-request

(async () => {
  const response = await fetch('data:,Internal%20Server%20Error');
  console.log('got response');
  try {
    await response.json();
  } catch(e) {
    console.log('error:', e.message);
  }
})();