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/tss-react/tools/polyfills/Object.fromEntries.js

@@ -0,0 +1,18 @@
+"use strict";
+/* eslint-disable @typescript-eslint/no-explicit-any */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.objectFromEntries = void 0;
+exports.objectFromEntries = !Object
+    .fromEntries
+    ? (entries) => {
+        if (!entries || !entries[Symbol.iterator]) {
+            throw new Error("Object.fromEntries() requires a single iterable argument");
+        }
+        const o = {};
+        Object.keys(entries).forEach(key => {
+            const [k, v] = entries[key];
+            o[k] = v;
+        });
+        return o;
+    }
+    : Object.fromEntries;