declare namespace FLib {
    namespace DragSlider {
        type CallbackParam = {
            item:         any;
            xPos:         number;
            moveMaxSize:  number;
            isAtStart:    boolean;
            isAtEnd:      boolean;
            visibleItems: Item[];
            hiddenItems:  Item[];
        }

        type Item = {
            index:   number;
            isFirst: boolean;
            isLast:  boolean;
            $item:   HTMLElement;
            info:    FLib.DOM.Offset;
        }

        type DeltaMove = {
            x:      number;
            deltaX: number;
            deltaY: number;
            newX:   number;
        }

        type Callback = ( data: CallbackParam ) => void;

        type Options = {
            viewportSelector:   string;
            listSelector:       string;
            itemSelector:       string;
            makeSlideOutideViewportInert: boolean;
            dragClass:          string;
            /** @defaultValue is-locked */
            lockedClass:        string;
            onStartDrag?:       Callback;
            onDrag?:            Callback;
            onStopDrag?:        Callback;
            onSnap?:            Callback;
            onSnapEnd?:         Callback;
            onSnapUpdate?:      Callback;
            onMouseEnter?:      Callback;
            onMouseLeave?:      Callback;
            onInit?:            Callback;
            onChangeState?:     ( isActive: boolean, options: CallbackParam ) => void;
            /**
             * In px.
             * @defaultValue 40
            */
            swipeTresholdMin: number;
            /**
             * In % (0.5 = 50% of the size of one item).
             * @defaultValue 0.5
            */
            swipeTresholdSize:number;
            _animReset: ($list) => void;
            _animClear: ($list) => void;
            _animKill: ($list) => void;
            _animMoveItem: ($list, x, onUpdate) => Promise<any>;
            _setCoordinates: ($list, x) => void;
        }
    }
}