How to use the @ledgerhq/hw-transport-node-hid-noevents.isSupported function in @ledgerhq/hw-transport-node-hid-noevents

import { listenDevices } from "./listenDevices";

let transportInstance;

/**
 * node-hid Transport implementation
 * @example
 * import TransportNodeHid from "@ledgerhq/hw-transport-node-hid-singleton";
 * ...
 * TransportNodeHid.create().then(transport => ...)
 */
export default class TransportNodeHidSingleton extends TransportNodeHidNoEvents {
  /**
   *
   */
  static isSupported = TransportNodeHidNoEvents.isSupported;

  /**
   *
   */
  static list = TransportNodeHidNoEvents.list;

  /**
   */
  static listen = (observer: Observer>): Subscription => {
    let unsubscribed;
    Promise.resolve(getDevices()).then(devices => {
      // this needs to run asynchronously so the subscription is defined during this phase
      for (const device of devices) {
        if (!unsubscribed) {
          const deviceModel = identifyUSBProductId(device.productId);
          observer.next({

let listenDevicesDebounce = 500;
let listenDevicesPollingSkip = () => false;

/**
 * node-hid Transport implementation
 * @example
 * import TransportNodeHid from "@ledgerhq/hw-transport-node-hid";
 * ...
 * TransportNodeHid.create().then(transport => ...)
 */
export default class TransportNodeHid extends TransportNodeHidNoEvents {
  /**
   *
   */
  static isSupported = TransportNodeHidNoEvents.isSupported;

  /**
   *
   */
  static list = TransportNodeHidNoEvents.list;

  /**
   *
   */
  static setListenDevicesDebounce = (delay: number) => {
    listenDevicesDebounce = delay;
  };

  /**
   *
   */