Question: This package works with electron?

[dohooo]

Yep, certainly. I have used it in my electron project.

[Kaplas85]

Can you give me a code example? Because I have this error

And this is my main.js (Electron v15.0.0)

import { app, autoUpdater, dialog, ipcMain } from "electron";
import serve from "electron-serve";
import { createWindow } from "./helpers";
import { Printer } from "@node-escpos/core";
import USB from "@node-escpos/usb-adapter";

const isProd = process.env.NODE_ENV === "production";

if (isProd) {
  serve({ directory: "app" });
} else {
  app.setPath("userData", `${app.getPath("userData")} (development)`);
}

(async () => {
  await app.whenReady();

  const mainWindow = createWindow("main", {
    width: 1000,
    height: 600,
  });

  if (isProd) {
    await mainWindow.loadURL("app://./home.html");
  } else {
    const port = process.argv[2];
    await mainWindow.loadURL(`http://localhost:${port}/home`);
    mainWindow.webContents.openDevTools();
  }
})();

ipcMain.handle("get-version", async (e) => {
  return app.getVersion();
});

ipcMain.handle("find-printers", async (e) => {
  const usbDevices = USB.findPrinter();
  console.log(usbDevices);
});

ipcMain.handle("print-receipt", async (e, itemsData, orderData) => {
  const device = new USB();
  const options = {
    encoding: "utf-8",
  };
  const printer = new Printer(device, options);

  device.open(async function (err) {
    if (err) {
      console.log(err);
      return;
    }

    printer.align("CT").size(10, 10).style("B").text("Dimalchi");
    printer
      .align("CT")
      .style("NORMAL")
      .size(1, 1)
      .text("Inv. Alma Fashion C.A.")
      .text("RIF: J40556539-0")
      .feed(1)
      .text(
        "Calle 100 (COLOMBIA) Casa Nro 101-10 Sector Centro de Valencia Valencia Carabobo Zona Postal 2001"
      );
    printer
      .feed(1)
      .align("LT")
      .style("B")
      .text(`Nota de Entrega: ${orderData.id}`)
      .style("NORMAL")
      .text(`Cliente: ${orderData.clientName}`)
      .text(
        `Fecha: ${new Date(orderData.createdAt).toLocaleDateString("es-ve")}`
      )
      .feed(2);

    printer
      .table(["Producto", "Cantidad", "Precio", "Total"])
      .drawLine()
      .feed(1);
    itemsData.map((item) => {
      printer.tableCustom([
        { text: item.name, align: "CENTER" },
        { text: item.quantity, align: "CENTER" },
        { text: item.price, align: "CENTER" },
        { text: item.total, align: "CENTER" },
      ]);
    });
    printer.feed(1).drawLine().feed(1);

    printer
      .text("Subtotal: Bs " + orderData.subTotal)
      .text("IVA: Bs " + orderData.ivaAmount)
      .text("Total: Bs " + orderData.total);

    printer.feed(2);
    printer.align("CT").text("¡Gracias por su compra!");

    printer.feed(4);
    printer.cut().close();
  });
});

[dohooo]

It seems you didn't bundle the lib to your electron program. I have no more time to do this currently, sry...

[YovanggaAnandhika]

i Am tested from typescript or Webpack running normal. @Kaplas85 i think your running code by commonJS not require.

[Kaplas85]

I was try using

...
import * as escpos from "@node-escpos/core";
import USB from "@node-escpos/usb-adapter";
...

and the error is the same :(

[dohooo]

Follow this #23. I'm so busy today... 🕊️

[ferminc]

I was try using

...
import * as escpos from "@node-escpos/core";
import USB from "@node-escpos/usb-adapter";
...

and the error is the same :(

Are you using typescript? If so, be sure you are compiling to commonjs Electron doesn’t support that import syntax (yet)

[Kaplas85]

I was try using

...
import * as escpos from "@node-escpos/core";
import USB from "@node-escpos/usb-adapter";
...

and the error is the same :(

Are you using typescript? If so, be sure you are compiling to commonjs Electron doesn’t support that import syntax (yet)

No, I'm using JS and my original code uses commonJS

[YovanggaAnandhika]

you sure adding yarn add @node-escpos/core first ?.

before to electron run build from tsc -- build and after build the source in dist folder. pointing the main to dist/index.js or another file name. for run electron .

[dohooo]

https://github.com/node-escpos/electron-example

[Kaplas85]

you sure adding yarn add @node-escpos/core first ?.

before to electron run build from tsc -- build and after build the source in dist folder. pointing the main to dist/index.js or another file name. for run electron .

Yeah, sure. When I use the electron in dev, the package works fine.

https://github.com/node-escpos/electron-example

Thanks! I'll check