import { HttpEvent, HttpHandler, HttpInterceptor, HttpRequest } from '@angular/common/http';
import { Observable } from 'rxjs';
export declare class DefaultHttpInterceptor implements HttpInterceptor {
    intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>>;
    /**
     * 将对象转化为URL参数字符串
     * @param param  将要转为URL参数字符串的对象
     * @param key    URL参数字符串的前缀
     * @param encode 是否进行URL编码，默认为true
     */
    private parseParam;
}