Chain promises

chaining.js

function getUsers() {
  return new Promise((resolve, reject) => {
    setTimeout(function () {
      return resolve('benja')
    }, 1000)
  })
}

function getIssues(user) {
  var issues = {
    benja: [1, 2, 3, 4, 5, 6]
  }
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      return resolve(issues[user])
    }, 1000)
  })
}

function getComments(issues) {
  var comments = issues.map(issue => {
    return `issue: ${issue} not solved`;
  })
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      return resolve(comments)
    }, 1000)
  }) 
}

// Use
getUsers().then(getIssues).then(getComments).then(x => {console.log(x)}).catch(x => {console.log(x)})