await-async-map

await-async-map.js

// node --harmony await-async-map.js

async function map([head, ...rest], fn, acc = []) {
  if (!head) {
    return acc;
  }

  return map(rest, fn, [...acc, await fn(head)]);
};

// example

const movies = ['lost in translation', 'donnie darko'];

const search =
  movie => new Promise(
    resolve => setTimeout(() => resolve(movie.toUpperCase()), 1000)
  );

async function main() {
  const result = await map(movies, movie => search(movie));

  console.log(result);
}

main();