pre-installations and preparations

node_modules/@mui/utils/composeClasses/composeClasses.d.ts

@@ -0,0 +1 @@
+export default function composeClasses<ClassKey extends string>(slots: Record<ClassKey, ReadonlyArray<string | false | undefined | null>>, getUtilityClass: (slot: string) => string, classes?: Record<string, string> | undefined): Record<ClassKey, string>;