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Function: requestPrinter() ​

ts
function requestPrinter(options?: RequestPrinterOptions): Promise<PairResult>;

Open the browser BLE picker, pair with an LT-200B, and resolve the GATT service / characteristics.

Discovery follows DECISIONS.md D4 — the registry's canonical UUIDs filter the picker, but the actual TX / RX / aux UUIDs are derived from the observed service UUID's tail (alexhorn's convention). This tolerates UUID-body variance across firmware revisions or device units. WebBluetoothTransport.request() doesn't fit because it asks for characteristics by canonical UUID before it sees the actual service tail; we do the picker + service resolution + characteristic derivation here, then wrap via WebBluetoothTransport.fromCharacteristics().

Returns the printer adapter + diagnostic plumbing (full observed UUIDs, link MTU best-effort) so the debug harness can export what's actually on the wire.

Parameters ​

ParameterType
options?RequestPrinterOptions

Returns ​

Promise<PairResult>

Deprecated ​

For harness use, prefer requestPrinters({ transport: 'bluetooth-gatt' }) — the new factory returns a PrinterAdapterMap matching the contracts shape. requestPrinter() is retained as the BLE-debug escape hatch (carries observed UUIDs / link MTU for the debug app).