/// <reference types="passport" />
import { ParsedRequest } from '@loopback/core';
import { Strategy } from 'passport';
import { UserProfile } from './provider';
/**
 * Shimmed Request to satisfy express requirements of passport strategies.
 */
export declare class ShimRequest {
    headers: Object;
    query: Object;
    url: string;
    path: string;
    method: string;
    constructor(request: ParsedRequest);
}
/**
 * Adapter class to invoke passport-strategy
 *   1. provides express dependencies to the passport strategies
 *   2. provides shimming of requests for passport authentication
 *   3. provides lifecycle similar to express to the passport-strategy
 *   3. provides state methods to the strategy instance
 * see: https://github.com/jaredhanson/passport
 */
export declare class StrategyAdapter {
    private readonly strategy;
    /**
     * @param strategy instance of a class which implements a passport-strategy;
     * @description http://passportjs.org/
     */
    constructor(strategy: Strategy);
    /**
     * The function to invoke the contained passport strategy.
     *     1. Create an instance of the strategy
     *     2. add success and failure state handlers
     *     3. authenticate using the strategy
     * @param req {http.ServerRequest} The incoming request.
     */
    authenticate(req: ParsedRequest): Promise<UserProfile>;
}