export declare function blobToBase64(data: Blob): Promise<string>;
/** returns true of the string is a data: with base64 content */
export declare function isBase64ImageData(str: string): boolean;
export declare function toArrayBuffer(base64: string): ArrayBuffer;
export declare function toUint8Array(base64: string): Uint8Array;
export declare function fromArrayBuffer(arraybuffer: ArrayBuffer): string;
export declare function fromUint8Array(uint8Array: Uint8Array): string;
export declare function dataURLtoFile(dataurl: string, filename: string): File;
export declare function buffersToArrayBuffer(buffer: Uint8Array[] | Uint8Array): ArrayBuffer;
export declare function cleanupBase64FileData(fileData: string): string;