import { Id } from '../types';
import { BaseModel } from './base';
import { Keys } from './entities';
/**
 * @param {BaseModel} parent The parent BaseModel
 * @param {string} relationKey The name of the property on the parent to refer the relation to (e.g. users.forms where forms is the relationKey)
 * @param {string} foreignKey The foreignKey on the relation refering to the parent. (e.g userId on a form)
 * @param {Keys} storeKey The store key of the relation items.
 */
export declare class HasOne<DataType> {
    protected _parent: BaseModel<any>;
    _foreignKey: string;
    _relationKey: string;
    _storeKey: Keys;
    constructor(parent: BaseModel<any>, relationKey: string, foreignKey: string, storeKey: Keys);
    getLocal(parentId: Id): Promise<DataType | undefined>;
    get(parentId: Id): Promise<any>;
    create(parentId: Id, item: DataType): Promise<any>;
}
export declare function hasOne<DataType>({ relationKey, foreignKey, storeKey, }: {
    relationKey: string;
    foreignKey: string;
    storeKey: Keys;
}): <C extends new (...args: any[]) => {}>(ctor: C) => {
    new (...args: any[]): {};
} & C;