export declare class Line { } export declare class CodeLine extends Line { contents: string; constructor(contents: string); } export declare class MessageSubstitutionLine extends Line { key: string; message: string; constructor(key: string, message: string); } export declare class ErrorLine extends Line { startCol: number; constructor(startCol: number); } export declare class MultilineErrorLine extends ErrorLine { constructor(startCol: number); } export declare class EndErrorLine extends ErrorLine { endCol: number; message: string; constructor(startCol: number, endCol: number, message: string); } export declare const ZERO_LENGTH_ERROR: string; export declare function parseLine(text: string): Line; export declare function printLine(line: Line, code?: string): string;