export default class BasicDownloadUtil {
    /**
     * 在 a 标签中加入 download 属性实现下载
     * @param blob
     */
    static download: (blob: Blob) => void;
    static getBase64FromRemoteImageUrlByXMLHttpRequest: (url: any, callback: any) => void;
    static getBase64FromRemoteImageUrlByImage: (url: any, callback: any) => void;
}