diff --git a/chatto/src/main/javascript/package.json b/chatto/src/main/javascript/package.json
index 6a8c22b..138867b 100644
--- a/chatto/src/main/javascript/package.json
+++ b/chatto/src/main/javascript/package.json
@@ -6,6 +6,7 @@
         "@types/sjcl": "^1.0.28",
         "@types/sprintf-js": "^1.1.2",
         "alertifyjs": "^1.12.0",
+        "builder-pattern": "^1.2.3",
         "chart.js": "^2.9.3",
         "dompurify": "^2.0.7",
         "fuse.js": "^3.4.6",
@@ -38,4 +39,4 @@
         "sprintf-js": "global:sprintf",
         "alertifyjs": "global:alertify"
     }
-}
\ No newline at end of file
+}
diff --git a/chatto/src/main/javascript/ts/src/main.ts b/chatto/src/main/javascript/ts/src/main.ts
index c187c98..fc3d299 100644
--- a/chatto/src/main/javascript/ts/src/main.ts
+++ b/chatto/src/main/javascript/ts/src/main.ts
@@ -21,6 +21,7 @@ import { FuseSearchService } from "./service/FuseSearchService";
 import { ChatMessageDTO } from "./dto/ChatMessageDTO";
 import { NotificationService } from "./service/NotificationService";
 import { AlertifyNotificationService } from "./service/AlertifyNotificationService";
+import { Builder } from "builder-pattern";
 
 // import "./SprintfTest.d.ts"
 // import { sprintf } from "sprintf-js";
@@ -126,4 +127,6 @@ const ns: NotificationService = new AlertifyNotificationService();
 ns.success("Welcome");
 // ns.errorWithDelay("Hmm very long error notif", 10);
 
-const ss = FuseSearchService.getInstance<ActiveUserViewModel>([""]);
\ No newline at end of file
+const ss = FuseSearchService.getInstance<ActiveUserViewModel>([""]);
+
+const test = Builder<UserViewDeps>().build();
diff --git a/chatto/src/main/javascript/yarn.lock b/chatto/src/main/javascript/yarn.lock
index b16f60b..99f7d50 100644
--- a/chatto/src/main/javascript/yarn.lock
+++ b/chatto/src/main/javascript/yarn.lock
@@ -400,6 +400,11 @@ buffer@^5.0.2:
     base64-js "^1.0.2"
     ieee754 "^1.1.4"
 
+builder-pattern@^1.2.3:
+  version "1.2.3"
+  resolved "https://registry.yarnpkg.com/builder-pattern/-/builder-pattern-1.2.3.tgz#483927d24892b8a44b491eddabdd009ab935d1e4"
+  integrity sha512-JAQMuJBMOzhAg/HQOdYTmdBIEZBWjtGoeR/MlfhPCOV6MN1yqLkHAqO3zGiw0ybpWOaYnpQQaqmg6ai1dmOp8w==
+
 builtin-status-codes@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/builtin-status-codes/-/builtin-status-codes-3.0.0.tgz#85982878e21b98e1c66425e03d0174788f569ee8"