/// <reference types="node" />
import { Url } from './Url';
export declare class Asset {
    private url;
    private data;
    private code;
    loaded: boolean;
    constructor(url: string | Url);
    getUrl(): Url;
    getCode(): number | null;
    getData(): Buffer | null;
    load(): Promise<Asset>;
    save(path: string, filename?: string): Promise<Asset>;
    static parseSitemapUrl(content: string): string[];
}