fix build script

Author: rinick

example/shared-import.js

@@ -3,6 +3,7 @@ export * from './prism-tabs';
 
 import * as React1 from 'react';
 import * as ReactDom1 from 'react-dom';
+export { createRoot } from "react-dom/client";
 
 export const React = React1;
 export const ReactDOM = ReactDom1;

tool/build-www.ts

@@ -5,7 +5,7 @@ import {highlight, languages} from 'prismjs';
 let reg = /(.|[\n\r])*\{(.*)\} from '..\/lib';/m;
 
 function replacer(str: string, p1: string, p2: string) {
-  return `import('./shared-import').then(({React, ReactDOM, jsxTab, htmlTab, ${p2}})=>{`;
+  return `import('./shared-import').then(({React, ReactDOM, jsxTab, htmlTab, createRoot, ${p2}})=>{`;
 }
 
 function exportCodeHtml(lan: string, file: string, data: string) {