import React from 'react';
import type { NodeState } from '../utils/treeOperations';
export interface TreeNodeProps<T = unknown> {
    /** Internal NodeState from treeOperations */
    node: NodeState<T>;
    /** Indentation level (0 = root) */
    level: number;
    /** Whether the node is currently expanded */
    expanded: boolean;
    /** Whether the node has children */
    hasChildren: boolean;
    /** Read-only mode — suppresses toggle, allows chevron */
    readOnly: boolean;
    /** Whether to show child count badge */
    showBadge: boolean;
    /** Number of direct children */
    childCount: number;
    /** Callback when checkbox is toggled */
    onToggle: (nodeId: string) => void;
    /** Callback when expand/collapse chevron is clicked */
    onExpand: (nodeId: string) => void;
    /** Tab index for roving tabindex pattern */
    tabIndex: number;
    /** Keyboard event handler */
    onKeyDown: (e: React.KeyboardEvent, nodeId: string) => void;
}
/**
 * TreeNode — Interaction Mode Layer.
 *
 * Renders a single node row: indent -> chevron -> checkbox -> icon -> label -> badge.
 * Handles click events and applies all ARIA attributes for accessibility.
 *
 * This component MUST NOT import useTree or Tree — it only receives
 * data and callbacks via props (architecture.md Section 2.1).
 */
declare function TreeNodeInner<T = unknown>(props: TreeNodeProps<T>): React.JSX.Element;
/**
 * Memoized TreeNode with custom comparator.
 * Only re-renders when state-relevant props change:
 * checked, disabled, indeterminate, expanded, tabIndex.
 */
export declare const TreeNode: typeof TreeNodeInner;
export {};
//# sourceMappingURL=TreeNode.d.ts.map