export declare const bem: (name: any, conf?: any) => string;
export declare function addUnit(value: any): any;
export declare function bound(position: number, min: number | undefined, max: number | undefined): number;
export declare function rubberband(distance: number, dimension: number, constant: number): number;
export declare function rubberbandIfOutOfBounds(position: number, min: number, max: number, dimension: number, constant?: number): number;
export declare function isPromise(val: any): boolean;
export declare function isImageUrl(url: any): boolean;
export declare function isVideoUrl(url: any): boolean;
export declare function isImageFile(item: any): any;
export declare function isVideoFile(item: any): any;
export declare function chooseFile({ accept, multiple, sourceType, compressed, maxDuration, sizeType, camera, maxCount, }: any): Promise<unknown>;