Usernames: Create/update/delete in profile editor

ts/state/ducks/conversationsEnums.ts

@@ -0,0 +1,30 @@
+// Copyright 2021 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+// We prevent circular loops between ducks and selectors/components with `import type`.
+//   For example, Selectors are used in action creators using thunk/getState, but those
+//   Selectors need types from the ducks. Selectors shouldn't use code from ducks.
+//
+// But enums can be used as types but also as code. So we keep them out of the ducks.
+
+export enum UsernameSaveState {
+  None = 'None',
+  Saving = 'Saving',
+  UsernameTakenError = 'UsernameTakenError',
+  UsernameMalformedError = 'UsernameMalformedError',
+  GeneralError = 'GeneralError',
+  DeleteFailed = 'DeleteFailed',
+  Success = 'Success',
+}
+
+export enum ComposerStep {
+  StartDirectConversation = 'StartDirectConversation',
+  ChooseGroupMembers = 'ChooseGroupMembers',
+  SetGroupMetadata = 'SetGroupMetadata',
+}
+
+export enum OneTimeModalState {
+  NeverShown,
+  Showing,
+  Shown,
+}