Check if Promise.all with large number of items works or not

test-large-promise.js

function generateDocs(count) {
  const docs = [];
  for (let i = 0; i < count; i += 1) {
    docs.push({
      id: i + 1,
      name: `Name${i}`,
      processed: false,
    });
  };
  return docs;
}

function someAsyncOperation(item) {
  return new Promise(resolve => {
    setTimeout(() => {
      resolve(Object.assign({}, item, { processed: true }));
    }, Math.random() * 100);
  });
};

const docs = generateDocs(500000);
const res = Promise.all(docs.map(doc => someAsyncOperation(doc)));
res.then((r) => {
  console.log(r.length, 'done');
});