node.js check your OS specification

Enter 'npm init' to install 'package.json'

Use Terminal to enter the information.

Check your information and press 'enter'.

Check your package.json.

First, you need to type the 'const os = require('os');' to import the os module.

After that type 'console.log(os.platform());'. 

Now run the node to run index.js or index.

Enter: need to check your file path

- node index.js

- node index

Your OS system will appear.