import * as Koa from 'koa';
import { AuthState } from './auth';
import { TokenInfo, IntrospectFunction } from '../services/tokens';
import { RafikiMiddleware } from '../rafiki';
export interface TokenAuthState extends AuthState {
    token: string;
    tokenInfo: TokenInfo;
}
export interface TokenAuthConfig {
    introspect: IntrospectFunction;
    authenticate: (tokenInfo: TokenInfo) => boolean;
}
export declare function getBearerToken(ctx: Koa.Context): string | undefined;
export declare function createTokenAuthMiddleware(config?: Partial<TokenAuthConfig>): RafikiMiddleware;