@mui/joy/className/index.d.ts

Joy UI is an open-source React component library that implements MUI's own design principles. It's comprehensive and can be used in production out of the box.

export { unstable_ClassNameGenerator } from '@mui/utils';
export declare const generateUtilityClass: (componentName: string, slot: string) => string;
export declare const generateUtilityClasses: <T extends string>(componentName: string, slots: T[]) => Record<T, string>;