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device: add optional printerCode field for in-protocol model identification #1

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device: add optional printerCode field for in-protocol model identification #1

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18 changes: 18 additions & 0 deletions src/device.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -415,6 +415,24 @@ export interface DeviceEntry {
* falls back to legacy `support.status`.
*/
verifications?: DeviceVerifications;

/**
* In-protocol model identifier(s) reported by the device itself in
* response to a driver-specific identity query. Used by transport-
* agnostic autodetect: open the wire, ask the printer who it is,
* look up by code.
*
* Niimbot today is the only consumer: chassis reply to
* `PrinterInfo(0x08)` (= `PrinterModelId`) with a 1- or 2-byte BE
* integer, matched against this field by `findDeviceByPrinterCode`.
* Codes mirror niimbluelib's `modelsLibrary`; a chassis may report
* any of several IDs (e.g. D110 → `[2304, 2305]`), so the field
* accepts a single code or an array.
*
* Brother / Dymo / cat-printer have no equivalent in-protocol query
* and leave this absent — they autodetect via USB VID/PID instead.
*/
printerCode?: number | readonly number[];
}

/**
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