import { HttpClient } from '@angular/common/http';
import { DomSanitizer } from '@angular/platform-browser';
import { Renderer } from 'marked';
import { Observable } from 'rxjs';
import { MarkedOptions } from './marked-options';
export declare const errorSrcWithoutHttpClient = "[ngx-markdown] When using the [src] attribute you *have to* pass the `HttpClient` as a parameter of the `forRoot` method. See README for more information";
export declare class MarkdownService {
    private platform;
    private http;
    private domSanitizer;
    options: MarkedOptions;
    renderer: Renderer;
    constructor(platform: Object, http: HttpClient, domSanitizer: DomSanitizer, options: MarkedOptions);
    compile(markdown: string, decodeHtml?: boolean, markedOptions?: MarkedOptions): string;
    getSource(src: string): Observable<string>;
    highlight(): void;
    private decodeHtml;
    private handleExtension;
    private precompile;
}