Grabbed dndbeyond's source code

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

ddb_main/tools/js/Shared/managers/ActionsManagerContext.tsx

@@ -0,0 +1,25 @@
+import React, { useMemo } from "react";
+
+import { ActionsManager } from "@dndbeyond/character-rules-engine/es";
+
+interface ActionsManagerContextValue {
+  actionsManager: ActionsManager;
+}
+
+const initContext: ActionsManagerContextValue = {
+  actionsManager: new ActionsManager(),
+};
+export const ActionsManagerContext =
+  React.createContext<ActionsManagerContextValue>(initContext);
+
+export function ActionsManagerProvider({ children }) {
+  const actionsManager: ActionsManager = useMemo(
+    () => new ActionsManager(),
+    []
+  );
+  return (
+    <ActionsManagerContext.Provider value={{ actionsManager }}>
+      {children}
+    </ActionsManagerContext.Provider>
+  );
+}