session: Move type into reducers file.

This puts it next to the code that cares in detail about all these
fields, making both easier to read and modify.

Author: gnprice

src/directSelectors.js

@@ -1,7 +1,6 @@
 /* @flow strict-local */
 import type {
   GlobalState,
-  SessionState,
   DraftState,
   FetchingState,
   FlagsState,
@@ -28,6 +27,7 @@ import type {
   User,
   UserGroup,
 } from './types';
+import type { SessionState } from './session/sessionReducers';
 
 export const getAccounts = (state: GlobalState): Account[] => state.accounts;
 

src/session/sessionReducers.js

@@ -1,6 +1,10 @@
 /* @flow strict-local */
 import type {
-  SessionState,
+  Debug,
+  Dimensions,
+  EditMessage,
+  Narrow,
+  Orientation,
   SessionAction,
   RehydrateAction,
   AccountSwitchAction,
@@ -37,6 +41,29 @@ import {
 } from '../actionConstants';
 import { hasAuth } from '../account/accountsSelectors';
 
+/**
+ * Miscellaneous non-persistent state about this run of the app.
+ *
+ * @prop lastNarrow - the last narrow we navigated to.  If the user is
+ *   currently in a chat screen this will also be the "current" narrow,
+ *   but they may also be on an associated info screen or have navigated
+ *   away entirely.
+ */
+export type SessionState = {|
+  eventQueueId: number,
+  editMessage: ?EditMessage,
+  isOnline: boolean,
+  isActive: boolean,
+  isHydrated: boolean,
+  lastNarrow: ?Narrow,
+  needsInitialFetch: boolean,
+  orientation: Orientation,
+  outboxSending: boolean,
+  /** For background, google [ios safe area]. */
+  safeAreaInsets: Dimensions,
+  debug: Debug,
+|};
+
 const initialState: SessionState = {
   eventQueueId: -1,
   editMessage: null,

src/types.js

@@ -19,6 +19,8 @@ import type {
 } from './api/apiTypes';
 import type { AppStyles } from './styles/theme';
 
+import type { SessionState } from './session/sessionReducers';
+
 export type { ChildrenArray } from 'react';
 export type React$Node = Node; // eslint-disable-line flowtype/type-id-match
 
@@ -240,29 +242,6 @@ export type Debug = {|
   doNotMarkMessagesAsRead: boolean,
 |};
 
-/**
- * Miscellaneous non-persistent state about this run of the app.
- *
- * @prop lastNarrow - the last narrow we navigated to.  If the user is
- *   currently in a chat screen this will also be the "current" narrow,
- *   but they may also be on an associated info screen or have navigated
- *   away entirely.
- */
-export type SessionState = {|
-  eventQueueId: number,
-  editMessage: ?EditMessage,
-  isOnline: boolean,
-  isActive: boolean,
-  isHydrated: boolean,
-  lastNarrow: ?Narrow,
-  needsInitialFetch: boolean,
-  orientation: Orientation,
-  outboxSending: boolean,
-  /** For background, google [ios safe area]. */
-  safeAreaInsets: Dimensions,
-  debug: Debug,
-|};
-
 /**
  * Info about how completely we know the messages in each narrow of
  * MessagesState.