import { type Rec } from "@agyemanjp/standard";
import type { UITreePosition } from "./_identity";
import type { ComponentElement, UIElement } from "./common";
import type { StdEltProps } from "../common";
/** Get component instances cache, used for retaining comp elt state aross renders, and memoizing comp elt invocations.
 * Stored in document object, hence not used on server, since UI is constructed from scratch on each request
 */
export declare function getCache(): ComponentInstancesCache | undefined;
export declare const COMPONENT_INSTANCES_CACHE_ID: string;
export type ComponentInstancesCache = Rec<ComponentInstanceInfo>;
export type ComponentInstanceInfo<P extends StdEltProps = StdEltProps> = {
    /** Position this instance id represents */
    pos: UITreePosition;
    /** Element inhabiting this position */
    elt: ComponentElement<P>;
    /** Last result of executing element */
    result?: UIElement;
};