type NormalizedItem<T> = {
    item: T;
    index: number;
    height: number;
    size: number;
    offsetTop: number;
    offset: number;
};
type NormalizedItems<T> = Record<string, NormalizedItem<T>>;
type IdGetter<T> = (item: T, index: number) => string;
type SizeGetter<T> = (item: T, index: number) => number;
export declare const getNormalizedItems: <T>(items: T[], idGetter: IdGetter<T>, sizeGetter: SizeGetter<T>) => NormalizedItems<T>;
export declare const isItemInView: (item: {
    offsetTop: number;
}, scrollTop: number, offsetHeight: number) => boolean;
export declare const getMaxOffset: <T>(offsetSize: number, normalizedItems: NormalizedItems<T>) => number;
export declare const easeInOutQuint: (time: number) => number;
export declare const isLayoutDirectionScrollbarVisible: <T>(items: T[], normalizedItems: NormalizedItems<T>, idGetter: IdGetter<T>, componentSize: number) => boolean;
export declare const getOnItemsRenderedData: <T>(items: T[], normalizedItems: NormalizedItems<T>, idGetter: IdGetter<T>, visibleStartIndex: number, visibleStopIndex: number, listSize: number, currentOffsetTop: number) => {
    firstItemId: string;
    secondItemId: string;
    lastItemId: string;
    centerItemId: string;
    firstItemOffsetEnd: number;
    currentOffsetTop: number;
};
export {};