export interface EndLineOptions {
    collapse?: boolean;
}
export declare class Output {
    #private;
    constructor(level?: number);
    increaseIndent(): void;
    decreaseIndent(): void;
    endLine(options?: EndLineOptions): void;
    append(value: string): void;
    significantWhitespace(): void;
    cosmeticWhitespace(): void;
    finalize(): string;
}