/**
 * Parser utility functions
 */
import type { TONLParseContext } from '../types.js';
/**
 * Extract lines belonging to a nested block starting from a header line
 * @param lines All lines in the content
 * @param startIndex Index of the header line
 * @returns Lines belonging to the nested block (excluding the header)
 */
export declare function extractNestedBlockLines(lines: string[], startIndex: number): string[];
/**
 * Find the index of the next header at the same or higher level
 * @param lines All lines in the content
 * @param currentIndex Current line index
 * @param context Parse context
 * @returns Index of the next header, or lines.length if none found
 */
export declare function findNextHeader(lines: string[], currentIndex: number, context: TONLParseContext): number;
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