diff --git a/src/app/comment.ts b/src/app/comment.ts
new file mode 100644
index 0000000000000000000000000000000000000000..d16510a5b082ca39a0c4fe26461fbe5cb7573423
--- /dev/null
+++ b/src/app/comment.ts
@@ -0,0 +1,9 @@
+export class Comment {
+  id: string;
+  roomId: string;
+  revision: string;
+  subject: string;
+  body: string;
+  read: boolean;
+  creationTimestamp: Date;
+}