import { ParserOptions, ParserResult } from "./types";
export declare class Formatter {
    private options;
    private regexpOperatorPrefix;
    private regexpOperatorSuffix;
    private regexpFilters;
    constructor(options?: ParserOptions);
    format(filters: ParserResult): string | undefined;
    private formatNode;
    private formatPlainObject;
    private wrapGroup;
    private getOrKeys;
    private getAndKeys;
    private pickLogicalArray;
    private mapKey;
    private mapValue;
    private mapOperator;
    private toStringOperator;
}