import { CallHandler, ExecutionContext, NestInterceptor } from '@nestjs/common';
import { Observable } from 'rxjs';
import { ExpressRequest, ExpressResponse, GeoIp, IBaseRequest, IResponseDto, UserAgent } from '../models';
export type ExpressResponseType<T> = string | T | IResponseDto<T>;
export declare class ExpressInterceptor<T = any> implements NestInterceptor<T, ExpressResponseType<T>> {
    intercept(context: ExecutionContext, next: CallHandler): Observable<any>;
    protected backupQuery(req: ExpressRequest, res: ExpressResponse): void;
    protected injectRequest(req: ExpressRequest): void;
    protected resolverLanguage(req: ExpressRequest): string;
    protected resolverTimezone(req: ExpressRequest): string;
    protected resolverUserAgent(req: ExpressRequest): UserAgent;
    protected resolverGeoIP(req: ExpressRequest): GeoIp;
    protected resolverQuery(req: ExpressRequest): IBaseRequest<any>;
    protected transformResponse(data: T): ExpressResponseType<T>;
    protected handleError(err: any): Observable<any>;
}
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