react-native-bluetooth-serial

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anyone can help me ?

@RaiiZen Check this: https://github.com/ingoncalves/escpos-xml It works for me.

It will create a buffer so you can pass it to the write method.

let encoder = new EscPosEncoder();

let result = encoder
  .initialize()
  .text("HelloWorld")
  .newline()
  .qrcode('HelloWorld')
  .encode();

const { Buffer } = require('buffer');

BluetoothSerial.write(Buffer.from(result.buffer))