Grabbed dndbeyond's source code

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

ddb_main/packages/rules-engine/es/reducers/featureFlagInfo.js

@@ -0,0 +1,12 @@
+import * as actionTypes from '../actions/featureFlagInfo/actionTypes';
+import { DEFAULT_FEATURE_FLAG_INFO } from '../engine/FeatureFlagInfo';
+export const initialState = DEFAULT_FEATURE_FLAG_INFO;
+export default function featureFlagInfoReducer(state = initialState, action) {
+    switch (action.type) {
+        case actionTypes.DATA_SET:
+            return action.payload;
+        default:
+        // not implemented
+    }
+    return state;
+}