Interface BluetoothClient

interface BluetoothClient {
    on(
        event: "stateChange",
        listener: (state: BluetoothAdapterState) => void,
    ): this;
    on(event: "discover", listener: (device: BluetoothDevice) => void): this;
    waitForPoweredOn(timeout?: number): Promise<void>;
    startScanning(
        serviceUUIDs?: string[],
        allowDuplicates?: boolean,
    ): Promise<void>;
    stopScanning(): Promise<void>;
}