/// <reference types="@dq-next/types" />
export declare function dataURLtoBlob(base64Buf: string): Blob;
export declare function dataURLtoFile(dataurl: string, filename: string): File;
export declare function urlToBase64(url: string, mineType?: string): Promise<string>;
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, sameSite, }: {
    url: string;
    target?: TargetContext;
    fileName?: string;
    sameSite?: boolean;
}): Promise<boolean>;
export declare function openFilePicker(): Promise<File>;