import React from "react";
/**
 * Returns a React.lazy component that is also preloaded immediately using
 * requestIdleCallback or setTimeout.
 * This ensures that chunks are split, but fetched in the background before they are actually needed.
 */
export declare function lazyEager<T extends React.ComponentType<any>>(factory: () => Promise<any>, exportName?: string): React.LazyExoticComponent<T>;