sample nkey authentication with node-nats

connectionsample.js

const NATS = require('nats');
const nkeys = require('ts-nkeys');

// private key
var priv = nkeys.fromSeed("SUAFY3TGVXJBM5A4CLH7OE4P4N25KHLMF6BQLPJKMV5K6MIZAVVAS4JXAQ");
var ah = {};
ah.sign = function(data) {
    return priv.sign(data);
};

ah.id = priv.getPublicKey();

let nc = NATS.connect({url: "tls://nats-audit.synadia.io:4222", tls: true, authHandler: ah});

nc.on('error', function(err) {
    console.log(err);
});

nc.on('connect', function(nc) {
    console.log(nc.info);
    console.log('connected');
});

nc.on('disconnect', function() {
    console.log('disconnect');
});

nc.on('reconnecting', function() {
    console.log('reconnecting');
});

nc.on('reconnect', function(nc) {
    console.log('reconnect');
});

nc.on('close', function() {
    console.log('close');
});

setup.sh

mkdir /tmp/test
cd /tmp/test
npm init
# answer prompts with default
# install nkey aware node-nats
npm install --save-dev nats@next
# install nkeys library
npm install --save-dev ts-nkeys