export declare const Accumulator: (initCode: any, accumulateCode: any, accumulateArgs: any, mergeCode: any, finalizeCode: any, initArgs?: never[], langCode?: string) => {
    $accumulator: {
        init: any;
        initArgs: never[];
        accumulate: any;
        accumulateArgs: any;
        merge: any;
        finalize: any;
        lang: string;
    };
};
export declare const FunctionOperator: (bodyCode: any, array: any, langCode?: string) => {
    $function: {
        body: any;
        args: any;
        lang: string;
    };
};