import { Logger } from '../..';
import { Oauth2Service } from '../services/types/oauth2.type';
import { HeaderBasedAuthentication, Oauth2Authentication } from './authns';
import { AuthenticationManager } from './types/authn.type';
export declare class Oauth2AuthenticationManager implements AuthenticationManager {
    private oauth2Service;
    private clientId;
    private clientSecret;
    private authUrl;
    private logger;
    constructor(opts: {
        oauth2Service: Oauth2Service;
        clientId: string;
        clientSecret: string;
        authUrl: string;
        logger: Logger;
    });
    authenticate(authentication: HeaderBasedAuthentication): Promise<Oauth2Authentication>;
    private searchPermission;
}