Medium Promise.allSettled examples

Promis-allSettled.js

// Example 1:
const dog = new Promise((resolve, reject) => {
  setTimeout(() => resolve('🐶'), 1000)
})
const cat = new Promise((resolve, reject) => {
  setTimeout(() => reject('🐈'), 2000)
})

Promise.allSettled([dog, cat]).then((values) => {
  console.log(values); 
// [{ status: 'fulfilled', value: '🐶' },
// { status: 'rejected', // reason: '🐈' }]
});


// Practical Usage:
// I have mostly used this for batch processing where 
// we identify the failed ones and retry separately.
Promise.allSettled([
    fetch('/endpoint0'),
    fetch('/endpoint1'),
    })
]).then(response => console.log(response))