Type Alias: EngineCompat

type EngineCompat = Pick<PrintEngine, "mediaCompatibility">;

Engine acceptance is described by PrintEngine.mediaCompatibility (which media classes the head accepts) and media advertise which device classes they fit via MediaDescriptor.targetModels. Both are driver-defined string sets, matched as set intersection.

Either side omitting its set means unrestricted on that side — an engine without mediaCompatibility accepts every media in the driver's registry, and media without targetModels fits every device in the family.