fnes_5_aa_1.js

const add2 = a => Promise.resolve(a + 2);

(function() {
  const list = [1, 2, 3, 4];
  const result = list.map(async function(val) {
    return await add2(val);
  });
  console.log(result, 'async/await 1');
  // [Promise, Promise, Promise, Promise] async/await 1
}) ();