import { RefIdResolver, RefOnResolvedValueChange, RefResolver } from './core';
import { RefConstructor } from './Ref';
/**
 * Custom reference options.
 */
export interface CustomRefOptions<T extends object> {
    /**
     * Must return the resolution for the given reference object.
     *
     * @param ref Reference object.
     * @returns The resolved object or undefined if it could not be resolved.
     */
    resolve: RefResolver<T>;
    /**
     * Must return the ID associated to the given target object, or `undefined` if it has no ID.
     * If not provided it will try to get the reference id from the model `getRefId()` method.
     *
     * @param target Target object.
     */
    getId?: RefIdResolver;
    /**
     * What should happen when the resolved value changes.
     *
     * @param ref Reference object.
     * @param newValue New resolved value.
     * @param oldValue Old resolved value.
     */
    onResolvedValueChange?: RefOnResolvedValueChange<T>;
}
/**
 * Creates a custom ref to an object, which in its snapshot form has an id.
 *
 * @template T Target object type.
 * @param modelTypeId Unique model type id.
 * @param options Custom reference options.
 * @returns A function that allows you to construct that type of custom reference.
 */
export declare const customRef: <T extends object>(modelTypeId: string, options: CustomRefOptions<T>) => RefConstructor<T>;