import { TrackerBar } from "../systems/TrackerBar.js";
/**
 * By system, the systems a roll of it was re-cut for, as the procedures
 * of the vocabulary name them: a red roll was re-punched for the
 * Licensee system and for the green one, and never the other way round.
 * @category Filiation
 */
export declare const transfersOf: () => ReadonlyMap<string, ReadonlySet<string>>;
/** Whether a version of the one system can stand above a version of the other: the same system, or one re-cut from it. */
export declare const leadsTo: (transfers: ReadonlyMap<string, ReadonlySet<string>>, from: string, to: string) => boolean;
/**
 * The system of a lost version above versions of the given systems: the
 * one they share, or else the one they were all re-cut from. A lost
 * state above a red and a Licensee version is red, since a Licensee
 * version is never re-cut into red. Where no system leads to all of
 * them, nothing.
 * @category Filiation
 */
export declare const systemAbove: (transfers: ReadonlyMap<string, ReadonlySet<string>>, systems: ReadonlySet<string>) => string | undefined;
/** The bar of a system the library knows, by its identifier. */
export declare const barNamed: (id: string) => TrackerBar | undefined;