export function isBrowserImage(node: any): any;
export function isImageFile(filename: any): boolean;
export function isPDF(node: any): boolean;
export function getFileExtension(node: any): any;
export function getMimeType(node: any): any;
export function flattenTree(rows: any): any[];
export function isInSearchMode(mode: any): boolean;
export function getUploadedFileMimeType(file: any): any;