A code example from the article https://www.joshwulf.com/blog/2020/03/array-async-failure

AsyncExecutor.ts

async function executeAsyncTasks(tasks: AsyncTask<any>[]) {
  const success = async res => ({ success: await res }) // Promise<{success: res}>
  const error = async err => ({ error: await err }) // Promise<{error: e}>

  const runWithResult = task => task.run()
    .then(result => {
      success(result)
      task._success(result)
    })
    .catch(e => {
      error(e)
      task._error(e)
    })
  
  const outcomes = await Promise.all(tasks.map(runWithResult))

  const outcomesFlat = outcomes.reduce((acc, o) => o.error ? 
    { error: [...acc.error, o.error], success: acc.success } :
    { error: acc.error, success: [...acc.success, o.success] }, 
    { error: [], success: [] })
  return outcomesFlat
}