rbren

let hn = require('@datafire/hacker_news').create();

(async () => {

  let storyIDs = await hn.getStories({storyType: 'top'});
  let topStory = await hn.getItem({itemID: storyIDs[0]});
  console.log(`Top story: ${topStory.title} - ${topStory.url}`);

})();

rbren

let hn = require('@datafire/hacker_news').create();

Promise.resolve()
  .then(_ => hn.getStories({storyType: 'top'}))
  .then(storyIDs => hn.getItem({itemID: storyIDs[0]))
  .then(topStory => console.log(`Top story: ${topStory.title} - ${topStory.url}`))

rbren

// Note: this code doesn't work!
let hn = require('@datafire/hacker_news').create();
hn.getStories({storyType: 'top'}, (err, storyIDs) => {
  if (err) throw err;
  hn.getItem({itemID: storyIDs[0]}, (err, topStory) => {
    if (err) throw err;
    console.log(`Top story: ${topStory.title} - ${topStory.url}`);
  })
})

rbren

// Note: this code doesn't work!
let hn = require('@datafire/hacker_news').create();

let storyIDs = hn.getStories({storyType: 'top'});
let topStory = hn.getItem({itemID: storyIDs[0]});
console.log(`Top story: ${topStory.title} - ${topStory.url}`);

rbren

function getThing(callback) {
  api.getItem(1)
    .then(item => setTimeout(_ => callback(null, item)))
    .catch(e => setTimeout(_ => callback(e)));
}

getThing(function(err, thing) {
  if (err) throw err;
  console.log(thing);
})

rbren

function getThing(callback) {
  api.getItem(1)
    .then(item => callback(null, item))
    .catch(e => callback(e));
}

getThing(function(err, thing) {
  if (err) throw err;
  console.log(thing);
})

rbren

api.getItem(1)
  .then(item => {
    delete item.owner;
    console.log(item.owner.name);
  })
  .catch(e => {
    console.log(e); // Cannot read property 'name' of undefined
  })

rbren

api.getItem(1, (err, data) => {
  if (err) throw err;
  item.amount++;
  api.updateItem(1, item, (err, update) => {
    if (err) throw err;
    api.deleteItem(1, (err) => {
      if (err) throw err;
    })
  })
})

rbren

Promise.resolve()
  .then(_ => {
    return api.getItem(1)
  })
  .then(item => {
    item.amount++
    return api.updateItem(1, item);
  })
  .then(update => {
    return api.deleteItem(1);

rbren

fs.readFile('index.html', 'utf8', (err, data) => {
  if (err) throw err;
  console.log(data);
})