nodejs get local IP address

get_ip.js

const os = require('os');

function getLocalIP() {
    for (const ifaces of Object.values(os.networkInterfaces())) {
        for (const iface of ifaces) {
            if (iface.family === 'IPv4' && iface.internal === false) {
                return iface.address;
            }
        }
    }

    return '0.0.0.0';
}