import { Observable } from 'rxjs';
import { RouteConfig } from '../providers';
import { Account, Membership, Username } from '../models';
import { Accounts } from '../api';
import { ApiHttpClient } from '../client/api.client';
export declare class AccountService {
    private readonly routes;
    private readonly http;
    constructor(routes: RouteConfig, http: ApiHttpClient);
    authenticate(username: string, password: string): Observable<Account>;
    memberships(query?: Accounts.Query): Observable<Array<Membership>>;
    /**
     * Determine if the username exists on the server. The server returns 404 Not
     * Found if the username isn't found, so the method catches the error and
     * returns Username with { existence: false } because the error can become
     * quite annoying.
     */
    username(username: string): Observable<Username>;
}