import type { Component, VNode } from 'preact';
/**
 * Additional properties added to Preact VNode elements by the adapter.
 */
export interface VNodeExtensions extends VNode {
    originalType: Function;
}
/**
 * Return the real component type of a component instance created by
 * shallow rendering.
 */
export declare function getRealType(component: Component): Function | null;
/**
 * Return true if a VNode has been modified to shallow-render.
 */
export declare function isShallowRendered(vnode: VNode): boolean;
/**
 * Convert components in a VNode tree to shallow-render.
 */
export declare function shallowRenderVNodeTree(vnode: VNode): void;
/**
 * Invoke `fn` with shallow rendering enabled in Preact.
 *
 * During the execution of `fn`, any function or class component elements
 * created by Preact's `h` function will be modified to only render a placeholder
 * instead of the real component.
 */
export declare function withShallowRendering(fn: () => any): void;