/**
 * Gantt Chart Parser
 *
 * Parses Mermaid Gantt chart syntax into an AST using the vendored JISON parser.
 */
import type { GanttAST } from '../types/gantt.js';
/**
 * Parse Gantt chart syntax into an AST
 * @param input - Mermaid Gantt chart syntax
 * @returns The parsed AST
 */
export declare function parseGantt(input: string): GanttAST;
/**
 * Check if input is a Gantt chart
 */
export declare function isGanttDiagram(input: string): boolean;
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