allSettled implementations

allSettled.js

async function success() {
  return new Promise((res, rej) => res('Resolved'));
}

async function error() {
  return new Promise((res, rej) => rej('Rejected'));
}
// then, catch syntax
function allSettled(promises) {
  const allPromises = promises.map((p) => {
    return Promise.resolve(p).then(
      (value) => ({
        status:'fulfilled', value
      }),
      (err) => ({
        status:'failed', reason: err
      })
    )
  })
  return Promise.all(allPromises);
}

// async/await syntax
// async function allSettled(promises) {
//   const allPromises = promises.map(async (p) => {
//     try {
//       const value = await p;
//       return {status: 'fulfilled', value}
//     } catch(err) {
//       return {status: 'failed', reason: err} 
//     }
//   })
//   return Promise.all(allPromises);
// }

(async() => {
  try {
      const result = await allSettled([success(), error()]);
    let filtered = [];
    result.forEach((r) => 
      {
        if( r.status === 'fulfilled') {
          filtered.push(r.value)
        }
      })
     console.log('result', result)
    console.log('success', filtered)
  } catch(err) {
      console.error('error', err)    
  }
})()