Grabbed dndbeyond's source code

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

ddb_main/contexts/Head/Head.tsx

@@ -0,0 +1,36 @@
+import { createContext, useContext, useState } from "react";
+import { Helmet } from "react-helmet";
+
+interface HeadContextProps {
+  title: string;
+  setTitle: (title: string) => void;
+}
+
+export const HeadContext = createContext<HeadContextProps>(null!);
+
+export const HeadContextProvider = ({ children }) => {
+  const [title, setTitle] = useState("Character App");
+
+  const setNewTitle = (title) => {
+    setTitle(`${title} - D&D Beyond`);
+  };
+
+  return (
+    <HeadContext.Provider value={{ title, setTitle: setNewTitle }}>
+      <Helmet>
+        <title>{title}</title>
+      </Helmet>
+      {children}
+    </HeadContext.Provider>
+  );
+};
+
+export const useHeadContext = () => {
+  const context = useContext(HeadContext);
+
+  if (!context) {
+    throw new Error("useHead must be used within a HeadProvider");
+  }
+
+  return context;
+};