import { AzureAdUser } from '../models';
import { HttpService } from '@nestjs/axios';
import { NestAzureAdJwtValidatorModuleOptions } from '../module-config';
export declare class AzureTokenValidationService {
    private readonly httpService;
    private readonly options;
    private readonly logger;
    constructor(httpService: HttpService, options: NestAzureAdJwtValidatorModuleOptions);
    isTokenValid(accessToken: string): Promise<[boolean, AzureAdUser, boolean]>;
    getAzureUserFromToken(accessToken: string): Promise<AzureAdUser>;
    private extractUserFromToken;
    extractRolesFromToken(accessToken: string): Promise<AzureAdUser>;
    private getAzureKeys;
    private verifyToken;
    private getTokenHeader;
    private validateServiceToken;
}