import { HttpInterceptor, HttpRequest, HttpHandler, HttpEvent, HttpClient } from '@angular/common/http';
import { Router } from '@angular/router';
import { Observable } from 'rxjs';
import { AuthService } from './auth.service';
import { NAuthClientConfig } from '@nauth-toolkit/client';
import * as i0 from "@angular/core";
/**
 * Class-based HTTP interceptor for NgModule apps (Angular < 17).
 *
 * For standalone components (Angular 17+), use the functional `authInterceptor` instead.
 *
 * @example
 * ```typescript
 * // app.module.ts
 * import { HTTP_INTERCEPTORS } from '@angular/common/http';
 * import { AuthInterceptorClass } from '@nauth-toolkit/client-angular';
 *
 * @NgModule({
 *   providers: [
 *     { provide: HTTP_INTERCEPTORS, useClass: AuthInterceptorClass, multi: true }
 *   ]
 * })
 * ```
 */
export declare class AuthInterceptorClass implements HttpInterceptor {
    private readonly config;
    private readonly http;
    private readonly authService;
    private readonly router;
    constructor(config: NAuthClientConfig, http: HttpClient, authService: AuthService, router: Router);
    intercept(req: HttpRequest<unknown>, next: HttpHandler): Observable<HttpEvent<unknown>>;
    static ɵfac: i0.ɵɵFactoryDeclaration<AuthInterceptorClass, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<AuthInterceptorClass>;
}