import React from 'react';
export interface TreeNodeIconProps {
    /**
     * Node key
     */
    nodeKey: string;
    /**
     * Whether this is a leaf node
     */
    isLeaf: boolean;
    /**
     * Custom icon (optional)
     */
    icon?: React.ReactNode;
    /**
     * Custom icon content (optional)
     */
    children?: React.ReactNode;
}
/**
 * TreeNodeIcon Component
 *
 * A composable component for the icon of a tree node.
 * Typically used within TreeNodeContent.
 *
 * @public
 *
 * @example
 * ```tsx
 * <TreeNodeContent nodeKey="1">
 *   <TreeNodeIcon nodeKey="1" isLeaf={false} />
 *   Node Title
 * </TreeNodeContent>
 * ```
 *
 * @remarks
 * - Automatically shows appropriate icon based on node state.
 * - Supports custom icons via icon prop.
 */
export declare const TreeNodeIcon: React.FC<TreeNodeIconProps>;
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