/**
 * A pair of two relations that describe the opposite of each other. The first
 * relation is considered as the primary relation.
 *
 * @public
 */
export type RelationPairs = [string, string][];
/**
 * A list of pairs of entity relations, used to define which relations are
 * merged together and which the primary relation is.
 *
 * @public
 */
export declare const ALL_RELATION_PAIRS: RelationPairs;