handling errors

const async1 = (cb) => {
  cb(true, 'data1');
}

const async2 = (cb) => {
  cb(false, 'data2');
}

async1((err, cb) => {
  console.log('Errors here: ', err);
  async2((err, cb) => {
    console.log('No longer an error: ', err);
  })
})