import { StageOperatorFn, AccumulatorFn, ExpressionFn, RegisteredOperator } from "../../config/Interfaces/Operation/aggregation.interface";
export declare class OperatorRegistry {
    private static operators;
    static registerStageOperator(name: string, fn: StageOperatorFn): void;
    static registerAccumulator(name: string, fn: AccumulatorFn): void;
    static registerExpressionOperator(name: string, fn: ExpressionFn): void;
    static getOperator(name: string): RegisteredOperator | undefined;
    static getAllByType(type: "stage" | "accumulator" | "expression"): RegisteredOperator[];
    static getRegisteredNames(): string[];
    static clearAll(): void;
}