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/@emotion/memoize/dist/emotion-memoize.esm.js

@@ -0,0 +1,9 @@
+function memoize(fn) {
+  var cache = Object.create(null);
+  return function (arg) {
+    if (cache[arg] === undefined) cache[arg] = fn(arg);
+    return cache[arg];
+  };
+}
+
+export { memoize as default };