This module allows you to send an ARP request and catch the response. In the response you'll get the hardware address of the target and the round trip time.
npm i arpingconst arp = require("arping");
arp.ping("192.168.0.1", (err, info) => {
if (err) throw err; // Timeout, ...
// THA = target hardware address
// TIP = target IP address
console.log("%s (%s) responded in %s secs", info.tha, info.tip, info.elapsed);
});