fix: static is default again

Author: azu

public/README.md

@@ -36,7 +36,7 @@ Open editor at first.
 <!-- sandpack:{
   "files": {
     "/src/index.js": {
-      "prependCode": "import './index.css'; // Hack to load index.css. require parcel env \n",
+      "appendCode": "// 次の行は本編とは無関係のコードなので無視してください\nconst link = document.createElement('link');link.rel='stylesheet';link.href='https://jsprimer.net/use-case/todoapp/final/final/index.css';document.head.append(link);\n",
       "path": "example2/src/index.js"
     },
     "/src/App.js": {
@@ -51,8 +51,7 @@ Open editor at first.
       "path": "example2/index.html"
     }
   },
-  "entry": "/index.html",
-  "environment": "parcel",
+  "environment": "static",
   "options": {
     "showLineNumbers": true,
     "showInlineErrors": true,

src/sandpack.tsx

@@ -111,7 +111,7 @@ export const attachToElement = (element: HTMLElement | ChildNode, options: Sandb
             entry: options.entry,
             dependencies: options.dependencies,
             devDependencies: options.devDependencies,
-            environment: options.environment ?? "parcel"
+            environment: options.environment ?? "static"
         };
         const entry = options.entry;
         const sandpackOptions = options.options;