taro-bluetooth-printTaro 蓝牙打印方案

import { BluetoothPrinter, DeviceManager } from 'taro-bluetooth-print';

async function printReceipt() {
  // 1️⃣ 扫描并发现打印机
  const deviceManager = new DeviceManager();
  deviceManager.on('device-found', (device) => {
    console.log('发现设备:', device.name);
  });
  await deviceManager.startScan({ timeout: 10000 });

  // 2️⃣ 连接目标打印机
  const printer = new BluetoothPrinter();
  const devices = deviceManager.getDiscoveredDevices();
  await printer.connect(devices[0].deviceId);

  // 3️⃣ 链式调用构建并打印内容
  await printer
    .text('=== 欢迎光临 ===', 'GBK')
    .feed()
    .text('商品A     x1    ¥10.00', 'GBK')
    .text('商品B     x2    ¥20.00', 'GBK')
    .feed()
    .text('------------------------', 'GBK')
    .text('合计：            ¥30.00', 'GBK')
    .feed(2)
    .qr('https://example.com', { size: 6 })
    .feed(2)
    .cut()
    .print();

  // 4️⃣ 断开连接
  await printer.disconnect();
}