asycForLoop.js

function timeout(ms) {
    return new Promise(r => setTimeout(r, ms));
}
var files = [
    { hi: 1 },
    { hi: 2 }
]

async function printFiles () {
  for (const file of files) {
    const contents = await timeout(3000);
    console.log(file);
  }
}
printFiles()