export declare class SearchParams {
    token?: string;
    group?: string;
    groupId?: string;
    start?: Date | string | number;
    stop?: Date | string | number;
    newestFirst?: boolean;
    filter?: string;
    pageSize?: number | string;
    retryMax?: number;
    retryDelay?: number;
}
export declare type SearchResult = any;
export declare type OptionalBoolean = boolean | void;
export declare type SearchResultHandler = (entry: SearchResult) => OptionalBoolean | Promise<OptionalBoolean>;
export declare abstract class SearchManager {
    abstract search(f: SearchResultHandler, params?: SearchParams): Promise<void>;
}
export declare function manager(impl: string, defaults?: SearchParams): SearchManager;