import { CallHandler, ExecutionContext, NestInterceptor } from "@nestjs/common";
import { Observable } from "rxjs";
export declare const Token: (key: string) => import("@nestjs/common").CustomDecorator<string>;
export declare class AuthInterceptor implements NestInterceptor {
    protected readonly reflector: any;
    constructor(reflector: any);
    intercept(context: ExecutionContext, next: CallHandler<any>): Promise<Observable<any>>;
    private exchangeToken;
}