@mui/material/legacy/styles/useTheme.js

React components that implement Google's Material Design.

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