import { type Ref } from 'vue';
import { type Key } from '../../_util/type';
export type ItemHeightData = [key: Key, height: number, column?: number];
export type ItemPositions = Map<Key, {
    column: number;
    top: number;
}>;
export default function usePositions(itemHeights: Ref<ItemHeightData[]>, columnCount: Ref<number>, verticalGutter: Ref<number>): import("vue").ComputedRef<readonly [ItemPositions, number]>;
