connect with mongoose using async/await

mongoose-connection.js

const mongoose = require('mongoose')

mongoose.Promise = Promise

mongoose.connection.on('connected', () => {
  console.log('Connection Established')
})

mongoose.connection.on('reconnected', () => {
  console.log('Connection Reestablished')
})

mongoose.connection.on('disconnected', () => {
  console.log('Connection Disconnected')
})

mongoose.connection.on('close', () => {
  console.log('Connection Closed')
})

mongoose.connection.on('error', (error) => {
  console.log('ERROR: ' + error)
})

const run = async () => {
  await mongoose.connect('mongodb://localhost:27017/emilioriosvz', {
    autoReconnect: true,
    reconnectTries: 1000000,
    reconnectInterval: 3000
  })
}

run().catch(error => console.error(error))

(async () => await mongoose.connect(DB_URL))().catch(console.log);