Type Alias: ConnectOptions

type ConnectOptions = 
  | {
  deviceKey?: string;
  transport: "usb";
}
  | {
  baudRate?: number;
  deviceKey?: string;
  transport: "serial";
}
  | {
  baudRate?: number;
  deviceKey?: string;
  transport: "bluetooth-spp";
}
  | {
  deviceKey?: string;
  transport: "bluetooth-gatt";
};

Options for the unified driver-web requestPrinters(opts) factory.

One factory per driver, dispatched on the transport discriminator. The browser's transport-appropriate picker (navigator.usb / navigator.serial / navigator.bluetooth) opens; the picked port/device is wrapped in the matching transport class; the factory tries to auto-identify which registry entry the picked device corresponds to.

Auto-identification capability per transport:

Transport	Auto-identify via
'usb'	usbDevice.vendorId/productId vs registry
'bluetooth-gatt'	observed service UUID vs registry
'serial'	(none in the standard Web Serial API)
'bluetooth-spp'	(none in the standard Web Serial API)

If auto-identification can't decide and deviceKey was omitted, the factory throws DeviceIdentificationRequiredError carrying the candidate registry entries (filtered by transport) and a continueWith closure to resume after operator confirmation.