/// <reference types="react" />
import { type NodeId } from '@ironclad/rivet-core';
export interface HeightCache {
    get: (nodeId: NodeId) => number | undefined;
    has: (nodeId: NodeId) => boolean;
    set: (nodeId: NodeId, height: number | undefined) => void;
}
/**
 * A cache of node heights. This is used when a node is unmounted and moved to the dragging list, since the node's
 * body needs to be re-rendered in order to get its height. This cache allows us to avoid flickering when the node
 * is first rendered in the dragging list.
 */
export declare const useNodeHeightCache: () => HeightCache;
/**
 * This hook persist the last known height of a node's body to the height cache, and can later use that last known
 * height temporarily while the node is waiting for the body to be available.
 */
export declare const useNodeBodyHeight: (heightCache: HeightCache, nodeId: NodeId, ready: boolean) => {
    ref: import("react").RefObject<HTMLDivElement>;
    height: string | undefined;
};
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