import type { RelationManyToManyOptions, RelationManyToOneOptions, RelationOneToManyOptions, RelationOneToOneOptions, RelationOptions } from '../../type/index.js';
declare function Relation<E>(opts: RelationOptions<E>): (target: object, key: string) => void;
type RelationReturn = ReturnType<typeof Relation>;
export declare function OneToOne<E>(opts?: RelationOneToOneOptions<E>): RelationReturn;
export declare function ManyToOne<E>(opts?: RelationManyToOneOptions<E>): RelationReturn;
export declare function OneToMany<E>(opts: RelationOneToManyOptions<E>): RelationReturn;
export declare function ManyToMany<E>(opts: RelationManyToManyOptions<E>): RelationReturn;
export {};
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