@mui/joy/modern/Modal/modalClasses.js

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.

import { generateUtilityClass, generateUtilityClasses } from '../className';
export function getModalUtilityClass(slot) {
  return generateUtilityClass('MuiModal', slot);
}
const modalClasses = generateUtilityClasses('MuiModal', ['root', 'hidden', 'backdrop']);
export default modalClasses;