/// <reference types="express" />
import { Request } from '@loopback/rest';
import { AuthenticationStrategy } from '@loopback/authentication';
import { UserService } from '../services';
import { User, UserProfile, UserCredentials } from '../data';
export declare class AuthStrategyBasic implements AuthenticationStrategy {
    private _userService;
    name: string;
    constructor(_userService: UserService<User, UserCredentials>);
    authenticate(request: Request): Promise<UserProfile | undefined>;
    extractCredentials(request: Request): UserCredentials;
}