/**
 * Tree-specific output formatting.
 *
 * Trees need special handling because:
 * - Terminal output should show a compact tree structure (not separate cards)
 * - Data formats (JSON/TSV) should output clean structured data (not visual characters)
 */
import type { OutputFormat } from "../types/index.js";
import type { TreeNode, TreeItem } from "../utils/tree.js";
export interface TreeOutputOptions {
    format?: OutputFormat;
    quiet: boolean;
}
/**
 * Output tree data with format-appropriate rendering.
 *
 * - quiet: Just output IDs
 * - json: Structured data with title, _id, count, parentId, depth
 * - tsv: Same structured data as TSV
 * - plain/table: Compact tree visualization
 */
export declare function outputTree<T extends TreeItem>(tree: TreeNode<T>[], options: TreeOutputOptions): void;
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