import { type AnyProps, type AttributeDictionary, type HTMLElementTagName } from "@knyt/weaver";
import type { KnytElement } from "./KnytElement.ts";
import type { ElementDefinition } from "./types.ts";
/**
 * @public
 */
export type LazyElementDefinition<T extends KnytElement.Constructor.Unknown, U extends string, P extends AnyProps = InstanceType<T>, A extends AttributeDictionary = KnytElement.ToAttributes<T>> = ElementDefinition.Fn<P> & Omit<ElementDefinition.Static<T, U, A>, "Element"> & {
    /**
     * @returns A promise that resolves to the constructor of the custom element.
     */
    readonly Element: () => Promise<T>;
};
/**
 *
 * @param tagName
 * @param importer
 * @returns
 */
export declare function lazy<T extends KnytElement.Constructor.Unknown, U extends HTMLElementTagName>(tagName: U, importer: () => Promise<{
    default: ElementDefinition<T, U>;
}>): LazyElementDefinition<T, U>;
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