NDEFReadingEvent: message property

const ndefReader = new NDEFReader();
function read() {
  return new Promise((resolve, reject) => {
    const controller = new AbortController();
    controller.signal.onabort = reject;
    ndefReader.addEventListener(
      "reading",
      (event) => {
        controller.abort();
        resolve(event);
      },
      { once: true },
    );
    ndefReader.scan({ signal: controller.signal }).catch((err) => reject(err));
  });
}
read().then(({ serialNumber }) => {
  console.log(serialNumber);
});