Async microrouter version

index.js

require('dotenv').config()
import { MongoClient } from 'mongodb'
import { get, post, router } from 'microrouter'

const connectMongoDB = () => MongoClient.connect(process.env.MONGODB)

const getContacts = async (req, res) => {
  const db = await connectMongoDB()
  const contacts = await db.collection('contacts').find({}).toArray()
  db.close()
  return res.json(contacts)
}

const createContact = async (req, res) => {
  const db = await connectMongoDB()
  await db.collection('contacts').insertOne(req.body)
  db.close()
  return res.json({result: 'ok'})
}

export const handler = router(
  get('/api/contacts', getContacts),
  post('/api/contacts/create', createContact),
  (req, res) => res.json({status: 'ok'})
)