superagent-and-promises.js

request = require('superagent')

request.get('http://httpbin.org/status/200')
  .then(req => console.log(`got status: ${req.status}`))
  .catch(err => console.error(err))

// got status: 200

request.get('http://httpbin.org/status/500')
  .then(req => console.log(`got status: ${req.status}`))
  .catch(req => console.log(`error with status: ${req.status}`))

// error with status: 500

request.get('http://httpbin.org/status/422')
  .then(req => console.log(`got status: ${req.status}`))
  .catch(req => console.log(`error with status: ${req.status}`))

// error with status: 422

// fetch.get('http://httpbin.org/status/422')
//   .then(req => console.log(`got status: ${req.status}`))
//   .catch(req => console.log(`error with status: ${req.status}`))

// got status: 422

new Promise((resolve, reject) => {
  throw new Error('poop')
}).then(() => console.log('happy'))
  .catch(err => console.error(`sad: ${err.message}`))

// sad: poop

new Promise((resolve, reject) => {
  reject('poop')
}).then(() => console.log('happy'))
  .catch(err => console.error(`sad: ${err}`))

// sad: poop

new Promise((resolve, reject) => {
  throw new Error('poop')
}).then(() => console.log('happy'))

// UnhandledRejectionException