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/utils/visuallyHidden/visuallyHidden.js

@@ -0,0 +1,12 @@
+const visuallyHidden = {
+  border: 0,
+  clip: 'rect(0 0 0 0)',
+  height: '1px',
+  margin: '-1px',
+  overflow: 'hidden',
+  padding: 0,
+  position: 'absolute',
+  whiteSpace: 'nowrap',
+  width: '1px'
+};
+export default visuallyHidden;