@mui/material/styles/withTheme.js

Quickly build beautiful React apps. MUI is a simple and customizable component library to build faster, beautiful, and more accessible React applications. Follow your own design system, or start with Material Design.

import { formatMuiErrorMessage as _formatMuiErrorMessage } from "@mui/utils";
export default function withTheme() {
  throw new Error(process.env.NODE_ENV !== "production" ? `MUI: withTheme is not longer exported from @mui/material/styles.
You have to import it from @mui/styles.
See https://mui.com/r/migration-v4/#material-ui-core-styles for more details.` : _formatMuiErrorMessage(16));
}