export declare const createObjectURL: (data: Blob | ArrayBuffer | Uint8Array, mimeType: string) => string;
export declare const downloadBlob: (data: Blob | ArrayBuffer | Uint8Array, mimeType: string, fileName: string) => void;
export declare const isBlob: (src: any) => src is Blob;
export declare const isArrayBuffer: (src: any) => src is ArrayBuffer;
export declare const isUint8Array: (src: any) => src is Uint8Array;