react-thermal-printer

print.ts

const port = new SerialPort('COM1', {
  baudRate: 9600
});

const receipt = await renderToBuffer(
  <ThermalPrint type="EPSON" width={42} characterSet="KOREA">
    <ThermalPrint.Txt size={{ width: 1, height: 1 }}>10,000원</ThermalPrint.Txt>
    <ThermalPrint.Txt>결제 완료</ThermalPrint.Txt>
    <ThermalPrint.Br />
    <ThermalPrint.Line type="single" />
    <ThermalPrint.Row left="결제방법" right="체크카드" />
    <ThermalPrint.Row left="카드번호" right="123456**********" />
    <ThermalPrint.Row left="할부기간" right="일시불" />
    <ThermalPrint.Row left="결제금액" right="10,000" />
    <ThermalPrint.Row left="부가세액" right="909" />
    <ThermalPrint.Row left="공급가액" right="9,091" />
    <ThermalPrint.Line type="single" />
    <ThermalPrint.Row left="정말 맛있는 옥수수수염차 X 2" right="11,000" />
    <ThermalPrint.Txt>옵션1(500)/옵션2/메모</ThermalPrint.Txt>
    <ThermalPrint.Row left="(-) 굉장히 엄청난 할인" right="- 6,000" />
    <ThermalPrint.Br />
    <ThermalPrint.Line type="single" />
    <ThermalPrint.Row left="합계" right="10,000" />
    <ThermalPrint.Row left="(-) 깜짝 할인 2%" right="- 1,000" />
    <ThermalPrint.Line type="single" />
    <ThermalPrint.Row left="대표" right="김대표" />
    <ThermalPrint.Row left="사업자등록번호" right="000-00-00000" />
    <ThermalPrint.Row left="대표번호" right="0000-0000" />
    <ThermalPrint.Row left="주소" right="어디시 어디구 어디동 몇동몇호" />
    <ThermalPrint.Line type="single" />
    <ThermalPrint.Br />
  </ThermalPrinter>
);

port.write(receipt);

aaa.mov