import { Resource, Child } from './types.js';
/**
 * Async data loader — SSR-aware.
 * Client: fires immediately, returns undefined until resolved, triggers re-render on resolve.
 * fn() is re-called when any signal it reads changes.
 */
export declare function resource<T>(fn: () => Promise<T>): Resource<T>;
/**
 * Streaming boundary component.
 * Client: shows fallback while resource is loading, renders children when resolved.
 * SSR: renders fallback (streaming replace happens in hydration layer).
 */
export declare function Suspense(props: {
    fallback: Child;
    children: Child;
}): Element | DocumentFragment;