Node POS

Library that offers easy API to communicate with point-of-sales printers, by serial way (usb), TCP/IP (wifi) and bluetooth.

Usage

import { AbstractAdapter, SerialAdapter, USBAdapter, listPrinters, Printer } from "@capvision/printer-pos";

const printers = await listPrinters();
const selectedPrinter = printers[0];

let adapter: AbstractAdapter;

if(selectedPrinter.type === "USB") {
    adapter = new USBAdapter({
        vendorId: selectedPrinter.vendorId,
        productId: selectedPrinter.productId,
    });
}
else {
    adapter = new SerialAdapter({
        path: selectedPrinter.path,
    });
}
// or directly adapter = new *Adapter(selectedPrinter);

const printer = new Printer(adapter);

await printer.open();

printer.setDefaultStyle({
    align: "left",
    bold: false,
    underline: false,
    double: false,
    font: "a",
});

await printer
    .text("=== Printing Test ===\n", { bold: true, underline: true })
    .text("Hello, this is a printing test.\n", { align: "center" })
    .text("We thank you for using our POS solution !\n\n", { font: "b" })
    .cut()
    .flush();

await printer.close();

Even easier :

import { AdapterFactory, listPrinters, Printer } from "@capvision/printer-pos";

const printers = await listPrinters();
const selectedPrinter = printers[0];
const adapter = AdapterFactory.create(selectedPrinter);
const printer = new Printer(adapter);

Notes

USB devices can work with Serial Port, or native USB.

Bluetooth devices almost always work Serial Port.