node-fetch-promise-all-example.js

import fetch from 'node-fetch';

const fetchUserDetailsById = async (id) => {
  const data = await fetch(`https://jsonplaceholder.typicode.com/users/${id}`);
  return data.json();
};

const userIdsToFetch = [1, 2];

const fetchTodosById = async (id) => {
  const data = await fetch(`https://jsonplaceholder.typicode.com/todos/${id}`);
  return data.json();
};

const todoIdsToFetch = [6, 7];

const promisesToFetch = [
  ...userIdsToFetch.map((userId) => fetchUserDetailsById(userId)),
  ...todoIdsToFetch.map((todoId) => fetchTodosById(todoId)),
];

const getData = async () => {
  try {
    const data = await Promise.all(promisesToFetch);
    data.forEach((el) => console.log(el));
  } catch (error) {
    console.log(`Catch block, Error: ${error}`);
  }
};

getData();


/* 
  {id: 1, name: 'Leanne Graham', username: 'Bret', email: 'Sincere@april.biz', address: {…}, …}
  {id: 2, name: 'Ervin Howell', username: 'Antonette', email: 'Shanna@melissa.tv', address: {…}, …}
  {userId: 1, id: 6, title: 'qui ullam ratione quibusdam voluptatem quia omnis', completed: false}
  {userId: 1, id: 7, title: 'illo expedita consequatur quia in', completed: false}
*/