Node Cookbook - Third Edition

Dealing with JSON pollution

Let create a folder called json-validation, initialize it as a package, and create an index.js file:

$ mkdir json-validation$ cd json-validation$ npm init -y$ touch index.js

The index.js should look like so:

const http = require('http')const {STATUS_CODES} = httpconst server = http.createServer((req, res) => {  if (req.method !== 'POST') {    res.statusCode = 404    res.end(STATUS_CODES[res.statusCode])    return  }  if (req.url === '/register') {    register(req, res)    return  }  res.statusCode = 404  res.end(STATUS_CODES[res.statusCode])})function register (req, res) {  var data = ''  req.on('data', (chunk) => data += chunk)  req.on('end', () => {    try {      data = JSON.parse(data)    } catch (e) {      res.end('{"ok": false}')      return    } // privileges ...