export declare function downloadByOnlineUrl(url: string, filename: string, mime?: string, bom?: BlobPart): void;
export declare function downloadByBase64(buf: string, filename: string, mime?: string, bom?: BlobPart): void;
export declare function downloadByData(data: BlobPart, filename: string, mime?: string, bom?: BlobPart): void;
export declare function downloadByUrl({ url, target, fileName, }: {
    url: string;
    target?: TargetContext;
    fileName?: string;
}): boolean;
export declare const downloadByA: (url: any, fileName: any) => void;