Show notifications when a user's profile name changes

ts/util/getStringForProfileChange.ts

@@ -0,0 +1,29 @@
+import { LocalizerType } from '../types/Util';
+import { ConversationType } from '../state/ducks/conversations';
+
+export type ProfileNameChangeType = {
+  type: 'name';
+  oldName: string;
+  newName: string;
+};
+
+export function getStringForProfileChange(
+  change: ProfileNameChangeType,
+  changedContact: ConversationType,
+  i18n: LocalizerType
+) {
+  if (change.type === 'name') {
+    return changedContact.name
+      ? i18n('contactChangedProfileName', {
+          sender: changedContact.title,
+          oldProfile: change.oldName,
+          newProfile: change.newName,
+        })
+      : i18n('changedProfileName', {
+          oldProfile: change.oldName,
+          newProfile: change.newName,
+        });
+  } else {
+    throw new Error('TimelineItem: Unknown type!');
+  }
+}