Abazhenov

const getInfo = () => 
  axios.get('/users')
    .then(users => {
      console.log(users)
    })
    .then(() => getGroups())
    .then(groups => {
      console.log(groups)
    })
    .then(() => getFavorites())

Abazhenov

const getInfo = async () => {
 console.log(await axios.get('/users'))
 console.log(await getGroups())
 console.log(await getFavorites())
 return 'all done';
}

getInfo();

Abazhenov

const associateUsers = () => {
  try {
   doSynchronousThings()
   return getUsers()
      .then(users => users.map(user => user.getAddress()));
      .catch(e => console.error(e))
  } catch(err){
    console.error(err) 
  }
}

Abazhenov

const associateUsers = async () => {
  try {
   doSynchronousthings()
   const users = await getUsers()
   return users.map(user => user.getAddress());
  } catch(err){
    console.error(err) 
  }
}

Abazhenov

router.get('/user/:id', async (req, res, next) => {
  try {
    const user = await getUserFromDb({ id: req.params.id })
    res.json(user);
  } catch (e) {
    //this will eventually be handled by your error handling middleware
    next(e) 
  }
})

Abazhenov

const asyncMiddleware = fn =>
  (req, res, next) => {
    Promise.resolve(fn(req, res, next))
      .catch(next);
  };

Abazhenov

const asyncMiddleware = require('./utils/asyncMiddleware');

router.get('/users/:id', asyncMiddleware(async (req, res, next) => {
    /* 
      if there is an error thrown in getUserFromDb, asyncMiddleware
      will pass it to next() and express will handle the error;
    */
    const user = await getUserFromDb({ id: req.params.id })
    res.json(user);
}));

Abazhenov

const db = require('../_db');
const Sequelize = require('sequelize');

class tag extends Sequelize.Model {
  //methods, hooks, etc....
}

tag.init({
  name: {
    type: Sequelize.STRING(100),

Abazhenov

const db = require('../_db');
const Sequelize = require('sequelize');

class story extends Sequelize.Model {
  //methods, hooks, etc....
}

story.init({
  title: {
    type: Sequelize.STRING,

Abazhenov

const Tag = require('./tag')
const Story = require('./story')

Tag.belongsToMany(Story)
Story.belongsToMany(Tag)