/**
 * XY Chart Diagram Parser
 *
 * Parses Mermaid xychart diagram syntax into an AST using the vendored JISON parser.
 */
import type { XYChartAST } from '../types/xychart.js';
/**
 * Parse xychart diagram syntax into an AST
 * @param input - Mermaid xychart diagram syntax
 * @returns The parsed AST
 */
export declare function parseXYChart(input: string): XYChartAST;
/**
 * Check if input is an xychart diagram
 */
export declare function isXYChartDiagram(input: string): boolean;
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