/**
 * Tree building module - converts flat file list to hierarchical tree
 */
import type { TreeNode } from '../types/index.js';
export declare class TreeBuilder {
    /**
     * Build hierarchical tree structure from flat file list
     * @param files - Array of file paths relative to root
     * @param rootName - Name of the root directory (default: 'root')
     * @returns Root tree node with nested children
     */
    static buildTree(files: string[], rootName?: string): TreeNode;
    /**
     * Add a single file path to the tree structure
     * @param root - Root tree node
     * @param filePath - File path to add (using POSIX separators)
     */
    private static addFileToTree;
    /**
     * Recursively sort tree children (directories first, then files, alphabetically)
     * @param node - Tree node to sort
     */
    private static sortTreeChildren;
    /**
     * Get flat list of all files in tree
     * @param node - Root tree node
     * @param basePath - Base path for relative paths (default: empty)
     * @returns Array of file paths
     */
    static getFilesFromTree(node: TreeNode, basePath?: string): string[];
    /**
     * Count files and directories in tree
     * @param node - Tree node to count
     * @returns Object with file and directory counts
     */
    static countNodes(node: TreeNode): {
        files: number;
        directories: number;
    };
    /**
     * Find a node in the tree by path
     * @param root - Root tree node
     * @param targetPath - Path to find (using POSIX separators)
     * @returns Found node or undefined
     */
    static findNodeByPath(root: TreeNode, targetPath: string): TreeNode | undefined;
}
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