pre-installations and preparations

node_modules/@mui/material/Stack/stackClasses.d.ts

@@ -0,0 +1,6 @@
+import { StackClasses } from '@mui/system';
+export type { StackClassKey } from '@mui/system';
+export type { StackClasses };
+export declare function getStackUtilityClass(slot: string): string;
+declare const stackClasses: StackClasses;
+export default stackClasses;