Grabbed dndbeyond's source code

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

ddb_main/react-jsx-parser/webpack/startup

@@ -0,0 +1,4 @@
+// module exports must be returned from runtime so entry inlining is disabled
+// startup
+// Load entry module and return exports
+return __webpack_require__(272);