current definition file is not recognized in Angular2 app and IDE, this one can: ```javascript declare module EXIF { export function getData(url: string, callback: any): any; export function getTag(img: any, tag: any): any; export function getAllTags(img: any): any; export function pretty(img: any): string; export function readFromBinaryFile(file: any): any; } ``` You may consider using this definition.