#async/await #promise #throw #try/catch

async-throw.js

async function main () {
  async function asyncThrows (id) {
    return new Promise((res, rej) => {
      console.log(`ASYNC ERROR ${id}`)
      throw `ASYNC ERROR ${id}`
    })
  }

  /* sequentially */
  // try {
  //   // let a = await asyncThrows(1)
  //   // let b = await asyncThrows(2)
  // } catch (e) {
  //   console.log(e, 'CAUGHT')
  //   return 'OK'
  // }

  /* parallelly */
  let a = asyncThrows(1)
  let b = asyncThrows(2)

  try {
    await a
  } catch (e) {
    console.log(e, 'CAUGHT')
  }

  try {
    await b
  } catch (e) {
    console.log(e, 'CAUGHT')
  }

  return '*OK*'
}

main()
  .then(console.log)
  .catch(console.error)