import { HttpClient, HttpEvent, HttpHandler, HttpInterceptor, HttpRequest } from '@angular/common/http';
import { InjectionToken } from '@angular/core';
import { Observable } from 'rxjs';
import { JwtUserService } from '../services/jwt-user.service';
import { SessionService } from '../services/session.service';
import { TokenRefreshService } from '../services/token-refresh.service';
import * as i0 from "@angular/core";
export declare const UNAUTHORIZED_HTTP_CODE = 401;
export declare const EXPIRATION_TRIGGER_TIME_SECONDS: InjectionToken<string>;
export declare class RefreshableJwtInterceptor implements HttpInterceptor {
    private user;
    private tokenRefreshService;
    private sessionService;
    private http;
    private expirationTriggerTimeSeconds;
    jwtExpired: boolean;
    jwtExpiresSoon: boolean;
    constructor(user: JwtUserService, tokenRefreshService: TokenRefreshService, sessionService: SessionService, http: HttpClient, expirationTriggerTimeSeconds?: number);
    intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>>;
    private processRefreshOnError;
    private processRefreshOnSuccess;
    private setTokens;
    static ɵfac: i0.ɵɵFactoryDeclaration<RefreshableJwtInterceptor, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<RefreshableJwtInterceptor>;
}