@mui/material/modern/styles/createMuiStrictModeTheme.js

Material UI is an open-source React component library that implements Google's Material Design. It's comprehensive and can be used in production out of the box.

import deepmerge from '@mui/utils/deepmerge';
import createTheme from "./createTheme.js";
export default function createMuiStrictModeTheme(options, ...args) {
  return createTheme(deepmerge({
    unstable_strictMode: true
  }, options), ...args);
}