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/@dndbeyond/authentication-lib-js/dist/index.js

@@ -0,0 +1,28 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+Object.defineProperty(exports, "AuthUtils", {
+  enumerable: true,
+  get: function get() {
+    return _AuthUtils["default"];
+  }
+});
+Object.defineProperty(exports, "UserUtils", {
+  enumerable: true,
+  get: function get() {
+    return _UserUtils["default"];
+  }
+});
+exports["default"] = void 0;
+
+var _AuthUtils = _interopRequireDefault(require("./AuthUtils"));
+
+var _UserUtils = _interopRequireDefault(require("./UserUtils"));
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
+
+// Export AuthUtils as default for backwards compatibility
+var _default = _AuthUtils["default"];
+exports["default"] = _default;