async awaitを使用した非同期処理

const url = "http://api.open-notify.org/astros.json";

async function getJson(url) {
  try {
    const data = await (await fetch(url)).json();
    console.log(data.people);
  } catch (error) {
    console.log(new Error("Can not load!!"));
  }
}

getJson(url);