export interface ScrollableContent {
    items: string[];
    totalCount: number;
    maxVisible: number;
    focusedIndex: number;
}
export interface ScrollWindow {
    startIdx: number;
    visibleItems: string[];
    showUpArrow: boolean;
    showDownArrow: boolean;
}
export declare class ScrollableViewport {
    calculateScrollWindow(content: ScrollableContent): ScrollWindow;
    handleScrollEvent(event: string, currentFocusedIndex: number, totalCount: number): number;
    drawScrollIndicators(buffer: string[][], width: number, height: number, borderPad: number, showUpArrow: boolean, showDownArrow: boolean): void;
}