export interface IDropOptions {
    id: string;
    offset: {
        x: number;
        y: number;
    };
    size: {
        width: number;
        height: number;
    };
    start: {
        x: number;
        y: number;
    };
}
export interface IDropState {
    el: HTMLElement;
    options: IDropOptions;
    group: string;
}
export declare class DragNDropService {
    private model;
    private subject;
    private observer;
    constructor();
    drag(el: HTMLElement, options: IDropOptions, group?: string): void;
    release(group?: string): void;
    listen(next: (d: any) => void): any;
    register(group: string, dropzone: any): void;
    unregister(group: string, dropzone: any): void;
    update(event: any): void;
}