pre-installations and preparations

node_modules/@mui/base/MenuButton/menuButtonClasses.js

@@ -0,0 +1,7 @@
+import { generateUtilityClass } from '../generateUtilityClass';
+import { generateUtilityClasses } from '../generateUtilityClasses';
+const COMPONENT_NAME = 'MenuButton';
+export function getMenuButtonUtilityClass(slot) {
+  return generateUtilityClass(COMPONENT_NAME, slot);
+}
+export const menuButtonClasses = generateUtilityClasses(COMPONENT_NAME, ['root', 'active', 'disabled', 'expanded']);