promiseAllExemplo.js

function getSomething() {
  return new Promise((resolve, reject) => setTimeout(() => resolve('Something'), 3000));
}

function getAnotherThing() {
   return new Promise((resolve, reject) => setTimeout(() => resolve('Another thing'), 4000));
}

function anotherMain() {
  return Promise.all([
    getSomething(),
    getAnotherThing(),
  ]).then((results) => {
    console.log(results); // -> ['Something', 'Another thing'] 
  });
}



// Com async/await
async function main() {
  const results = await Promise.all([
     getSomething(),
     getAnotherThing(),
  ]);
  
  console.log(results); // -> ['Something', 'Another thing']
}

main();