Grabbed dndbeyond's source code

```
~/go/bin/sourcemapper -output ddb -jsurl https://media.dndbeyond.com/character-app/static/js/main.90aa78c5.js
```

ddb_main/node_modules/@mui/material/zero-styled/index.js

@@ -0,0 +1,7 @@
+import useThemeProps from '../styles/useThemeProps';
+export { default as styled } from '../styles/styled';
+
+// eslint-disable-next-line @typescript-eslint/no-unused-vars
+export function createUseThemeProps(name) {
+  return useThemeProps;
+}