declare class DelayExpand {
    static instance: DelayExpand;
    didDrop: boolean;
    private preHoverId;
    private wait;
    private timeout;
    private status;
    private prePosition?;
    private preContainerId?;
    onStatusChanged: (status: 'lock' | 'open' | 'wait') => void;
    private destroy;
    /**
     * 是否需要重绘，尽可能减少插入次数
     */
    isRedraw({ position, containerId }: any): boolean;
    init(): void;
    setDidDrop(drop: boolean): void;
    constructor();
    static getInstance(): DelayExpand;
    private setStatus;
    getStatus(): "wait" | "open" | "lock" | undefined;
    setHightItem({ hoverId, itemClassName }: any): void;
    private startExpandKeys;
    start({ dragId, hoverId, expandedKeys, setExpandedKeys, DSLCore, mouseY, mouseStartY, currentOffsetTop, itemOffsetTop, itemClientHeight, afterExpanded, itemClassName, }: any): void;
    horizontalStart({ containerId, expandedKeys, setExpandedKeys, afterExpanded }: any): void;
}
declare const _default: DelayExpand;
export default _default;