import { IVirtualListProps } from '../VirtualList';
export interface IVirtualListHelperCalculations {
    containerSizePx: number;
    itemSizePx: number;
    itemsCount: number;
    overscanItemsAheadInt: number;
    overscanItemsBehindInt: number;
    overscanItemsCount: number;
    overscanItemsCountInt: number;
    overscanSizePx: number;
    scrollTop: number;
    scrollIndex: number;
    viewportEndIndex: number;
    viewportEndIndexInt: number;
    viewportItemsCount: number;
    viewportSizePx: number;
    viewportStartIndex: number;
    viewportStartIndexInt: number;
    virtualEndIndexInt: number;
    virtualItemsCount: number;
    virtualStartIndexInt: number;
}
export declare class VirtualListHelper {
    calculateItems(itemsCount: number, itemHeight: number, wrapperSizePx: number, scrollTop: number, overscan: IVirtualListProps['overscan'], disableVirtualization?: boolean): IVirtualListHelperCalculations;
    generateAndGetRenderedItems(data: IVirtualListProps['data'], itemRenderer: IVirtualListProps['itemRenderer'], calculations: IVirtualListHelperCalculations, itemRendererExtraData: IVirtualListProps['itemRendererExtraData'], striped: boolean): ReturnType<IVirtualListProps['itemRenderer']>[];
}
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