import { VirtualHTMLElement } from "../virtual-dom";
import { VirtualNode } from "../virtual-dom";
/**
 * Asserts that an element is a real DOM HTMLElement and returns it with the correct type.
 * Throws if called with a virtual element — callers must guard against virtual mode
 * before calling this function (e.g. check `documentFactory` or `VIRTUAL_DOCUMENT_BRAND`).
 */
export declare function asHTMLElement(element: VirtualHTMLElement): HTMLElement;
/**
 * Asserts that a node is a real DOM Node and returns it with the correct type.
 * Throws if called with a virtual node — callers must guard against virtual mode
 * before calling this function.
 */
export declare function asNode(node: VirtualNode): Node;
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