import type { Writable } from 'node:stream';
export declare class CupFrameRenderer {
    private readonly stream;
    private previousTopRow;
    private previousLineCount;
    private previousRawLineCount;
    private eraseBottomOverride;
    constructor(stream: NodeJS.WriteStream & Writable);
    setEraseBottomOverride(row: number): void;
    get topRow(): number;
    private static wrapToPhysicalLines;
    measure(content: string, targetBottomRow: number): {
        topRow: number;
        lineCount: number;
    };
    render(content: string, targetBottomRow: number, anchorFloor?: number): void;
    resetGeometry(): void;
    clear(extraRows?: number): void;
    done(): void;
}