process.platform

The process.platform property returns a string identifying the operating system platform for which the Node.js binary was compiled.

Currently possible values are:

• 'aix'
• 'darwin'
• 'freebsd'
• 'linux'
• 'openbsd'
• 'sunos'
• 'win32'

import { platform } from 'node:process';

console.log(`This platform is ${platform}`);

const { platform } = require('node:process');

console.log(`This platform is ${platform}`);

The value 'android' may also be returned if Node.js is built on the Android operating system. However, Android support in Node.js is experimental.