import { CanActivate, ExecutionContext } from '@nestjs/common';
import * as KeycloakConnect from 'keycloak-connect';
import { Reflector } from '@nestjs/core';
declare module 'keycloak-connect' {
    interface GrantType {
        access_token?: KeycloakConnect.Token;
        refresh_token?: string;
        id_token?: string;
        expires_in?: string;
        token_type?: string;
    }
}
export declare class AuthGuard implements CanActivate {
    private keycloak;
    private reflector;
    constructor(keycloak: KeycloakConnect.Keycloak, reflector: Reflector);
    canActivate(context: ExecutionContext): Promise<boolean>;
    extractJwt(headers: Headers): any;
}