问angular 8 Cordova插件承诺

EN

  scanQr() {
    this.qrscan.scanCode().then((imageData) => {
      console.log(imageData);
    }, (err) => {
      console.log("Camera issue: " + err);
    });
  }

 public scanCode(): Promise<any> {
    return new Promise(function (resolve, reject) {
      cordova.plugins.barcodeScanner.scan((result) => resolve(result), (error) => reject(error));
    });
  }