export declare class BackgroundOutputRingBuffer {
    private lines;
    private bytes;
    private partialLine;
    
    private droppedLines;
    
    push(text: string): void;
    
    flush(): void;
    private enforceLimits;
    
    head(n: number): string[];
    
    tail(n: number): string[];
    
    offset(globalStart: number, limit: number): string[];
    
    firstLineIndex(): number;
    
    getLineCount(): number;
    
    getByteCount(): number;
}