/**
 * Format an error message at a file location.
 *
 * @param message Error message.
 * @param line Line number, 1 indexed.
 * @param column Column number, 1 indexed.
 * @param filename Optinal filename.
 * @returns Formatted string.
 */
export declare function utilFormatErrorAtFileLocation(message: string, line: number, column: number, filename?: string): string;