QZ Tray + ThermalPrinterEncoder (Node.js)

print.js

let tpe = require('thermal-printer-encoder');
let ws = require('ws');
let qz = require('qz-tray');

let encoder = new tpe({
    language: 'esc-pos'
});

let result = encoder
    .initialize()
    .text('The quick brown fox jumps over the lazy dog')
    .newline()
    .qrcode('https://nielsleenheer.com')
    .encode();

let config = qz.configs.create("Epson TM-T88VI");
let data = [{
    type: 'raw',
    format: 'command',
    flavor: 'hex',
    data: Buffer.from(result).toString('hex')
}];

qz.api.setWebSocketType(ws);

qz.websocket.connect().then(() => {
    return qz.print(config, data);
}).catch((err) => {
    console.error(err);
});