Error handling async await in an Express server 🤖

aync-await–error–handler.js

const express = require('express')
const db = require('./data/helpers/tagDb')
const server = express()
server.use(express.json())

// Catches async/await errors/Promise rejections and passes it along to express middleware
const catchErrors = fn => (req, res, next) => fn(req, res, next).catch(next)

// Error Handler (displays full error details)
const handleErrors = (err, req, res, next) => {
  const errorDetails = {
    status: err.status,
    message: err.message,
    stack: err.stack || ''
  }
  res.status(err.status || 500).json(errorDetails)
}

// Route using async/await. No need for try/catch since our function is wrapped with catchErrors function
async postTag(req, res) => {
  const response = await db.insert() // Will fail call to database
  res.json(response)
}

// Wrap postTag with catchErrors
server.post('/api/tags', catchErrors(postTag))

// Make sure we pass handleErrors function as Middleware
server.use(handleErrors)

server.listen(8080, () => console.log('Hey from port 8080!'))