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ES7's async/await is the ultimate way. Use with Babel and you can run it anywhere.

async function main() {
  await signIn()

  const res = await http.get('/articles')
  const articles = res.data

  try {
    const updatedArticle = (await http.put(`/article/${articles[0].id}`, { data: { title: 'something' } })).data
    articles[0] = updatedArticle
  }
  catch (err) {
    console.log('error', err)
  }

  for (let article of articles) {
    await something(article)
  }

  const arrayOfAsyncOperations = [ update(x), update(y) ]

  await *arrayOfAsyncOperations

  if (something) {
    await anotherOperation()
  }

    await signOut()
}

Writing this code with promises is a nightmare, especially when it comes to conditions/loops. async/await keep it super clean.

See what it translates to

Generators are less fancy.