internal-ip 
Get your internal IP address
Install
$ npm install internal-ip
Usage
const internalIp = require('internal-ip');
(async () => {
console.log(await internalIp.v6());
//=> 'fe80::1'
console.log(await internalIp.v4());
//=> '10.0.0.79'
})();
console.log(internalIp.v6.sync())
//=> 'fe80::1'
console.log(internalIp.v4.sync())
//=> '10.0.0.79'
The module returns the address of the internet-facing interface, as determined from the default gateway. When the address cannot be determined for any reason, null will be returned.
The module relies on operating systems tools. On Linux and Android, the ip command must be available, which depending on distribution might not be installed by default. It is usually provided by the iproute2 package.
Related
- internal-ip-cli - CLI for this module
- public-ip - Get your public IP address
- default-gateway - Get your default gateway address
License
MIT © Sindre Sorhus