frontend/node_modules/@mui/private-theming/useTheme/useTheme.js

import * as React from 'react';
import ThemeContext from './ThemeContext';
export default function useTheme() {
  const theme = React.useContext(ThemeContext);
  if (process.env.NODE_ENV !== 'production') {
    // eslint-disable-next-line react-hooks/rules-of-hooks
    React.useDebugValue(theme);
  }
  return theme;
}