[Solved] SyntaxError: Unexpected token o in JSON at position 1 NodeJS

SyntaxError: Unexpected token o in JSON at position 1 NodeJS, I am getting this error when I use JSON.parse function to decode the JSON from the request in NodeJS, 

SyntaxError: Unexpected token o in JSON at position 1 at JSON.parse (<anonymous>) at C:\nodejs\learning\test.js:6:28 at Layer.handle [as handle_request] (C:\nodejs\learning\node_modules\express\lib\router\layer.js:95:5) at next (C:\nodejs\learning\node_modules\express\lib\router\route.js:137:13) at Route.dispatch (C:\nodejs\learning\node_modules\express\lib\router\route.js:112:3) at Layer.handle [as handle_request] (C:\nodejs\learning\node_modules\express\lib\router\layer.js:95:5) at C:\nodejs\learning\node_modules\express\lib\router\index.js:281:22 at Function.process_params (C:\nodejs\learning\node_modules\express\lib\router\index.js:335:12) at next (C:\nodejs\learning\node_modules\express\lib\router\index.js:275:10) at expressInit (C:\nodejs\learning\node_modules\express\lib\middleware\init.js:40:5)

the code is 

const express = require('express');const app = express();app.post('/test', (req, res) => { res.status(200); res.send('Done '+ JSON.parse(req).body.firstName + ' ' + JSON.parse(req).body.lastName);});app.listen(3000, () => { console.log('Check your brwoser test');});

Please help 

UPDATE 

I figured it out after a lot of searching I found out that I shouldn't use JSON.parse to decode the JSON data with Express JS so the right way is 

adding this line in the code

app.use(express.json()) 

so the code should look like 

const express = require('express');const app = express();app.use(express.json()) // Add this lineapp.post('/test', (req, res) => { res.status(200); res.send('Done '+ req.body.firstName + ' ' + req.body.lastName);});app.listen(3000, () => { console.log('Check your brwoser test');});