import { CallHandler, ExecutionContext, NestInterceptor } from '@nestjs/common';
import SpanContext from 'opentracing/lib/span_context';
import { Observable } from 'rxjs';
import { JwtPayload } from '../core/auth';
import { DefaultRegisteredLoaders } from './context';
export interface GraphqlContext<RegisteredLoaders = DefaultRegisteredLoaders, U = JwtPayload> {
    getDataLoaders: () => RegisteredLoaders;
    getCurrentUser: () => U | undefined;
    getTrace: () => SpanContext;
}
export declare class DataLoaderInterceptor implements NestInterceptor {
    intercept(context: ExecutionContext, next: CallHandler): Observable<any> | Promise<Observable<any>>;
}