Migrated Gatsby website source and config

src/utils/mountCodeExample.js

@@ -0,0 +1,41 @@
+/**
+ * Copyright (c) 2013-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @emails react-core
+*/
+
+'use strict';
+
+import CodeEditor from '../components/CodeEditor';
+import React from 'react';
+import ReactDOM from 'react-dom';
+
+// TODO This is a huge hack.
+// Remark transform this template to split code examples and their targets apart.
+const mountCodeExample = (containerId, code) => {
+  const container = document.getElementById(containerId);
+  const parent = container.parentElement;
+
+  const children = Array.prototype.filter.call(
+    parent.children,
+    child => child !== container,
+  );
+  children.forEach(child => parent.removeChild(child));
+
+  const description = children
+    .map(child => child.outerHTML)
+    .join('')
+    .replace(/`([^`]+)`/g, '<code>$1</code>');
+
+  ReactDOM.render(
+    <CodeEditor code={code}>
+      {<div dangerouslySetInnerHTML={{__html: description}} />}
+    </CodeEditor>,
+    container,
+  );
+};
+
+export default mountCodeExample;