export interface VirtualRange {
    start: number;
    end: number;
    paddingTop: number;
    paddingBottom: number;
    totalHeight: number;
}
interface VirtualizerOptions {
    count?: number;
    estimateSize?: number;
    overscan?: number;
    fixedSize?: number | null;
}
export declare class DtVirtualizer {
    private _count;
    private _estimateSize;
    private _overscan;
    private _fixedSize;
    private _viewportHeight;
    private _scrollTop;
    private _sizes;
    constructor(options?: VirtualizerOptions);
    setCount(count: number): void;
    setViewportHeight(height: number): void;
    setScrollTop(scrollTop: number): void;
    setEstimateSize(size: number): void;
    setFixedSize(size: number | null): void;
    resetMeasurements(): void;
    measure(index: number, size: number): number;
    getOffset(index: number): number;
    getTotalHeight(): number;
    getRange(): VirtualRange;
}
export {};
//# sourceMappingURL=virtualizer.d.ts.map