import { Datasource } from '../datasource';
import type { DigestConfig, GetReleasesConfig, ReleaseResult } from '../types';
export declare class CustomDatasource extends Datasource {
    static readonly id = "custom";
    customRegistrySupport: boolean;
    constructor();
    getReleases(getReleasesConfig: GetReleasesConfig): Promise<ReleaseResult | null>;
    getDigest(_cfg: DigestConfig, _newValue?: string): Promise<string | null>;
}