/**
 * JSON.parse error location and formatting.
 */
import type { JsonErrorLocation } from './types';
/** Extract a character offset from a JSON.parse SyntaxError message. */
export declare function extractJsonErrorOffset(message: string, sourceLength: number): number | null;
/** Map a parse error + source string to line/column and a caret snippet. */
export declare function locateJsonError(source: string, err: unknown): JsonErrorLocation;
/** Format a JSON.parse failure with line, column, reason, and a caret snippet. */
export declare function formatJsonParseError(source: string, err: unknown): string;