fix: prevent type errors

Author: feildmaster

src/utils/menu.js

@@ -145,7 +145,8 @@ const menu = wrap(() => {
   });
 
   eventManager.on(':load', () => {
-    fn.addMenuButton('Menu').addEventListener('click', () => menu.open());
+    const btn = fn.addMenuButton('Menu');
+    if (btn) btn.addEventListener('click', () => menu.open());
   });
 
   function dirty() {

src/utils/style.js

@@ -1,7 +1,6 @@
 // Custom CSS classes are great.
 const style = wrap(() => {
   const el = document.createElement('style');
-  el.type = 'text/css';
   eventManager.on(':loaded', function appendStyle() {
     document.head.append(el);
   });