index.js

const Roku = require('rokujs');
const roku = new Roku('roku-address');

Roku.discover(function (devices) {
    console.log(devices);

    /* example response
    [ { server: 'Roku UPnP/1.0 MiniUPnPd/1.4',
      address: '192.168.2.45',
      location: 'http://192.168.2.45:8060/',
      usn: 'uuid:roku:ecp:2N005M893730' } ]
    */
});

const readline = require('readline');
readline.emitKeypressEvents(process.stdin);

var Controller = {};

Controller.onUp = () => {
    console.log("Button: Up");
    roku.press('up');
}

Controller.onDown = () => {
    console.log("Button: Down");
    roku.press('down');
}

Controller.onLeft = () => {
    console.log("Button: Left");
    roku.press('left');
}

Controller.onRight = () => {
    console.log("Button: Right");
    roku.press('right');
}

Controller.onSelect = () => {
    console.log("Button: Select");
    roku.press('enter');
}

process.stdin.setRawMode(true);
process.stdin.on('keypress', (str, key) => {
    if (key.ctrl && key.name === 'c') {
        process.exit();
    } else {
        console.log(`You pressed the "${str}" key`);
        switch (key.name) {
            case 'up': {
                Controller.onUp();
                break;
            }

            case 'down': {
                Controller.onDown();
                break;
            }

            case 'left': {
                Controller.onLeft();
                break;
            }

            case 'right': {
                Controller.onRight();
                break;
            }

            case 'return': {
                Controller.onSelect();
                break;
            }
        }
    }
});