import Adapter from "../Adapter";
export default class Usb extends Adapter {
    private static findDeviceOrThrow(vid, pid);
    private static getPrinterDevices(vid?);
    private device;
    private endpoint;
    private vid;
    private pid;
    constructor(vid?: number, pid?: number);
    open(): Promise<void>;
    write(data: Uint8Array): Promise<void>;
    close(): Promise<void>;
    private throwIfNeeded(reason?);
}