import type { Component } from "../core/types.js";
import { View } from "../core/view.js";
/**
 * Render content depending on the state of an async function or promise.
 *
 * See {@link Async `<Async>`} when using JSX or when named properties are preferred.
 *
 * This task is tracked using the current {@link ASYNC async context} if any. It is guaranteed, that the view is updated before the tracked task completes.
 */
export declare function nestAsync<T>(source: (() => Promise<T>) | Promise<T>, component?: Component<T>, pending?: Component, rejected?: Component<unknown>): View;
/**
 * Render content depending on the state of an async function or promise.
 *
 * See {@link nestAsync} when not using JSX or when positional arguments are preferred.
 *
 * This task is tracked using the current {@link ASYNC async context} if any. It is guaranteed, that the view is updated before the tracked task completes.
 */
export declare function Async<T>(props: {
    /**
     * The async function or promise.
     */
    source: (() => Promise<T>) | Promise<T>;
    /**
     * A function render content while pending.
     *
     * By default, nothing is rendered.
     */
    pending?: () => unknown;
    /**
     * A function to render content when resolved.
     *
     * By default, nothing is rendered.
     */
    children?: (value: T) => unknown;
    /**
     * A function to render content when rejected.
     *
     * By default, nothing is rendered.
     */
    rejected?: (value: unknown) => unknown;
}): View;