import { NestInterceptor as INestInterceptor, ExecutionContext, CallHandler } from "@nestjs/common";
import { Observable } from "rxjs";
export interface NestInterceptorBeforeHanlder {
    (context: ExecutionContext): Promise<void>;
}
export interface NestInterceptorResponseHandler<T> {
    (response: any): Promise<T>;
}
export declare class NestInterceptor<ResponseType = any> implements INestInterceptor<any, ResponseType> {
    private beforeHandlerList;
    private responseHandler;
    intercept(context: ExecutionContext, next: CallHandler): Promise<Observable<ResponseType>>;
    addBeforeHandler(handler: NestInterceptorBeforeHanlder): this;
    setReponseHandler(handler: NestInterceptorResponseHandler<ResponseType>): this;
}