Support Vietnamese printing

[ngoclam9200]

Hello..
I am having font error when printing Vietnamese content, Can you help me??

  const printerIP = "";  
  const printerPort = 0000;  

  const cpj = new JSPM.ClientPrintJob();
  cpj.clientPrinter = new JSPM.NetworkPrinter(printerPort, printerIP);

  const billContent = `
    Công ty TNHH XYZ\n
    -----------------------------\n
    Sản phẩm A       2 x 100.000\n
    Sản phẩm B       1 x 50.000\n
    -----------------------------\n
    Tổng cộng:       250.000 VND\n
    Cảm ơn quý khách!\n
    \x1D\x56\x41  // ESC/POS Cut Paper
  `;

  const printFile = new JSPM.PrintFileTXT(billContent, "bill.txt", 1);
  cpj.files.push(printFile);

  await cpj.sendToClient();

[neodynamic]

PrintFileTXT is for printing plain text through the printer driver. Now, if you specify a network printer, then no driver is involved so the text file will be sent as is to the printer.

Based on your source code it seems your target printer supports ESC/POS commands so refer to this other project to print ESC/POS commands https://github.com/neodynamic/js-escpos-builder (there's a mention in the readme of that project about international text)