import type { Entity, EntityManager } from "../entities";
import { ManyToOneRelation, type ManyToOneRelationConfig } from "./ManyToOneRelation";
import type { MutationInstructionResponse } from "./RelationMutator";
import { type RelationType } from "./relation-types";
/**
 * Both source and target receive a mapping field
 * @todo: determine if it should be removed
 */
export type OneToOneRelationConfig = ManyToOneRelationConfig;
export declare class OneToOneRelation extends ManyToOneRelation {
    constructor(source: Entity, target: Entity, config?: OneToOneRelationConfig);
    type(): RelationType;
    /**
     * One-to-one relations are not listable in either direction
     */
    isListableFor(): boolean;
    $set(em: EntityManager<any>, key: string, value: object): Promise<MutationInstructionResponse>;
    $create(em: EntityManager<any>, key: string, value: unknown): Promise<void | MutationInstructionResponse>;
}