/**
 * Timeline Diagram Parser
 *
 * Parses Mermaid timeline diagram syntax into an AST using the vendored JISON parser.
 */
import type { TimelineAST } from '../types/timeline.js';
/**
 * Parse timeline diagram syntax into an AST
 * @param input - Mermaid timeline diagram syntax
 * @returns The parsed AST
 */
export declare function parseTimeline(input: string): TimelineAST;
/**
 * Check if input is a timeline diagram
 */
export declare function isTimelineDiagram(input: string): boolean;
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