/// <reference types="react" />
import { NextScript } from 'next/document';
declare type DocumentFiles = {
    sharedFiles: readonly string[];
    pageFiles: readonly string[];
    allFiles: readonly string[];
};
/**
 * Custom NextScript to defer loading of unnecessary JS.
 * Standard behavior is async. Compatible with Next.js 10.0.3
 */
declare class DeferredNextScript extends NextScript {
    getDynamicChunks(files: DocumentFiles): (JSX.Element | null)[];
    getScripts(files: DocumentFiles): JSX.Element[];
}
export default DeferredNextScript;