/**
 * State Diagram Parser
 *
 * Parses Mermaid state diagram syntax into an AST using the vendored JISON parser.
 * The JISON parser calls methods on a `yy` object - we provide our own implementation
 * that builds an AST instead of mermaid's internal db structure.
 */
import { type StateDiagramAST } from '../types/state.js';
/**
 * Parse a state diagram string into an AST
 */
export declare function parseStateDiagram(input: string): StateDiagramAST;
/**
 * Detect if input is a state diagram
 */
export declare function isStateDiagram(input: string): boolean;
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