Promise.prototype.finally()

Question

What does the code snippet to the right output by console.log?

Snippet

Promise.resolve(1)
.finally((data) => {
  console.log(data)
  return Promise.reject('error')
})
.catch((error) => {
  console.log(error)
  throw 'error2'
})
.finally((data) => {
  console.log(data)
  return Promise.resolve(2).then(console.log)
})
.then(console.log)
.catch(console.log)

Source

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