async-await-tips-to-be-aware-of-at-all-times_1.js

function delay(ms, value) {
  return new Promise((resolve) => {
    setTimeout(() => resolve(value), ms)
  })
}

async function getRandomItem(arr) {
  try {
    const result = await delay(200, arr[Math.floor(Math.random() * arr.length)])

    if (typeof result === 'number') {
      throw new Error(`Received a number`)
    }

    return result
  } catch (error) {
    throw error instanceof Error ? error : new Error(String(error))
  }
}

async function start() {
  try {
    return getRandomItem(['a', 1, 3, 'ccc'])
  } catch (error) {
    window.alert(`You picked out number. Please try again for a string`)
  }
}

// The caller
start().catch((err) => {
  console.error(`[${err.name}]: ${err.message}`)
})