Node.js os.type() Method

The os.type() method is an inbuilt application programming interface of the os module which is used to get Operating system name.
Syntax:

os.type()

Parameters: This method does not accept any parameters.
Return Value: This method returns a string that represents operating system name. The returned value can be one of these ‘Darwin’ for MacOS, ‘Linux’ for Linux and ‘Windows_NT’ for windows.
Below examples illustrate the use of os.type() method in Node.js:

Example 1:

javascript

// Node.js program to demonstrate the
// os.type() method

// Allocating os module
const os = require('os');

// Printing os.type() value
console.log(os.type());

Output:

Windows_NT

Example 2:

javascript

// Node.js program to demonstrate the
// os.type() method

// Allocating os module
const os = require('os');

// Printing os.type() value
var type = os.type();
switch(type) {
    case 'Darwin':
        console.log("MacOS");
        break;
    case 'Linux':
        console.log("Linux operating system");
        break;
    case 'Windows_NT':
        console.log("windows operating system");
        break;
    default:
        console.log("other operating system");
}

Output:

windows operating system

Note: The above program will compile and run by using the node index.js command.

Reference: https://nodejs.org/api/os.html#os_os_type