const Bluebird = require('bluebird')

async function asyncFunction() {
  return Bluebird.resolve(42)
}

function notAsyncFunction() {
  return Bluebird.resolve(42)
}

// will throw
try {
  asyncFunction().tap()
} catch(e) {
  console.log('Async version threw')
}

// will not throw
try {
  notAsyncFunction().tap()
  console.log('NotAsync didnt throw')
} catch(e) {
  console.log('This message will never be displayed')
}