import type { File } from '@babel/types';
export interface ParseResult {
    file: File;
    language: 'javascript' | 'typescript';
}
/**
 * Parse JS or TS source into a babel AST. Returns null on syntax error.
 * Never throws.
 *
 * - JSX is always enabled (covers React).
 * - TypeScript plugin is enabled when language === 'typescript'.
 * - Common stage-3 syntax (decorators-legacy, class-properties, optional
 *   chaining, nullish coalescing) is enabled to maximize coverage.
 */
export declare function parseCode(code: string, language?: 'javascript' | 'typescript'): ParseResult | null;