Faster incremental builds

ts/types/SafetyNumberChangeSource.ts

@@ -0,0 +1,9 @@
+// Copyright 2025 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+export enum SafetyNumberChangeSource {
+  InitiateCall = 'InitiateCall',
+  JoinCall = 'JoinCall',
+  MessageSend = 'MessageSend',
+  Story = 'Story',
+}