import { PickOne } from 'type-fns';
import { DomainObjectShape } from '../DomainReferenceable';
/**
 * .what = a unique key declared in pivot notation, for max(observability), when applicable
 * .what.examples
 *   - if: RefByUnique<Payer> === { role: PayerRole, exid: string }
 *   - ->: RefByPivot<Payer, 'role', 'exid'> === { [key: PayerRole]: string }
 *   - if: RefByUnique<Participant> === { role: ParticipantRole, exid: string }
 *   - ->: RefByPivot<Participant, 'role', 'exid'> === { [key: ParticipantRole]: string }
 *
 * todo: have the pivot key auto defined via `[$1, $2]` notation on the dobj?
 */
export type DomainPivotKeyShape<TDobj extends DomainObjectShape, TPivotKey extends keyof TDobj, TPivotValue extends keyof TDobj> = PickOne<Record<TDobj[TPivotKey], TDobj[TPivotValue]>>;
export { DomainPivotKeyShape as DomainReferenceByPivotKey, DomainPivotKeyShape as RefByPivot, };