fix: crxjs plugin issues

lib/shadowDom.ts

@@ -0,0 +1,27 @@
+import { Plugin } from "vite";
+
+export default function shadowDom(): Plugin {
+  return {
+    name: 'merge-css-shadow-dom',
+    enforce: 'post',
+    apply: 'serve',
+    transform(src, id) {
+      if (/\.(css).*$/.test(id)) {
+        const fn =
+          "import { updateStyle, removeStyle } from '@/shadowDomUtils.ts';\n";
+        let updatedSrc = fn + src;
+        updatedSrc = updatedSrc.replace(
+          '__vite__updateStyle(',
+          'updateStyle(',
+        );
+        updatedSrc = updatedSrc.replace(
+          '__vite__removeStyle(',
+          'removeStyle(',
+        );
+        return {
+          code: updatedSrc,
+        };
+      }
+    }
+  }
+}