export declare class IndentationTracker {
    private baseIndent;
    private curIndent;
    output: string;
    constructor(baseIndent?: number, curIndent?: number, output?: string);
    indent(): void;
    dedent(): void;
    addLine(str: string): void;
    reIndentBlock(str: string): string;
    addBlock(start?: string, callback?: (...args: any[]) => void, end?: string): void;
    wrap(start?: string, end?: string): void;
    isEmpty(): boolean;
    toString(): string;
}