@ledgerhq/hw-transport-webusb

constructor

constructor(device: USBDevice, interfaceNumber: number);

property channel

channel: number;

property device

device: USBDevice;

property deviceModel

deviceModel: any;

property interfaceNumber

interfaceNumber: number;

property isSupported

static isSupported: () => Promise<boolean>;

• Check if WebUSB transport is supported.

property list

static list: () => Promise<USBDevice[]>;

• List the WebUSB devices that was previously authorized by the user.

property listen

static listen: (observer: Observer<DescriptorEvent<USBDevice>>) => Subscription;

• Actively listen to WebUSB devices and emit ONE device that was either accepted before, if not it will trigger the native permission UI.

  Important: it must be called in the context of a UI click!

property packetSize

packetSize: number;

method close

close: () => Promise<void>;

• Release the transport device

method exchange

exchange: (apdu: Buffer) => Promise<Buffer>;

• Exchange with the device using APDU protocol.

  Parameter apdu

  Returns

  a promise of apdu response

method open

static open: (device: USBDevice) => Promise<TransportWebUSB>;

• Create a Ledger transport with a USBDevice

method openConnected

static openConnected: () => Promise<TransportWebUSB | null>;

• Similar to create() except it will never display the device permission (it returns a Promise<?Transport>, null if it fails to find a device).

method request

static request: () => Promise<TransportWebUSB>;

• Similar to create() except it will always display the device permission (even if some devices are already accepted).

method setScrambleKey

setScrambleKey: () => void;