flow: Apply strict-local everywhere we can: 306/397 files.

This applies all the strictness rules of `@flow strict`, except
for `nonstrict-import`.  So that lets us avoid adding any new uses
of unsafe patterns in these files, even while they import other
files that use unsafe patterns.

To do this, I first added `strict-local` to every file that has
Flow but not `strict` or `strict-local`:

  sed -i 's/@flow/@flow strict-local/' -- \
      $(git grep -l '@flow [^s]' src/)

Then of course there were a lot of errors.  But the great thing
about this feature is that it doesn't interact between files!
So I just identified the files with errors, and reverted the
changes there:

  git checkout @ -- \
      $(yarn flow --show-all-errors \
        |& perl -lane 'print $1 if (/^Error.* (\S+):\d+:\d+$/)' \
        | sort -u)

This left 306 files gaining this protection, after reverting 91 files.

Author: gnprice

src/ZulipMobile.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import React from 'react';
 
 import './boot/ReactotronConfig';

src/__flow-tests__/types-test.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { Action } from '../types';
 
 // Assert that Action does not allow arbitrary objects.

src/account-info/LogoutButton.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import { connect } from 'react-redux';
 
 import React, { PureComponent } from 'react';

src/account-info/SwitchAccountButton.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import { connect } from 'react-redux';
 
 import React, { PureComponent } from 'react';

src/account/AccountItem.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import React, { PureComponent } from 'react';
 import { StyleSheet, View } from 'react-native';
 

src/account/AccountList.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import React, { PureComponent } from 'react';
 import { View, FlatList } from 'react-native';
 

src/account/AccountPickScreen.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import { connect } from 'react-redux';
 
 import React, { PureComponent } from 'react';

src/account/__tests__/accountsReducers-test.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import deepFreeze from 'deep-freeze';
 
 import {

src/account/__tests__/accountsSelectors-test.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import deepFreeze from 'deep-freeze';
 
 import { getAuth } from '../accountsSelectors';

src/account/__tests__/getActiveAccount-test.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import deepFreeze from 'deep-freeze';
 
 import { getActiveAccount } from '../accountsSelectors';

src/account/accountActions.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type {
   AccountSwitchAction,
   RealmAddAction,

src/account/accountsReducers.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import {
   REALM_ADD,
   LOGIN_SUCCESS,

src/account/accountsSelectors.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import { createSelector } from 'reselect';
 
 import type { Account, Selector } from '../types';

src/actionCreator.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { Action, GlobalState, Dispatch } from './types';
 import { clearTypingNotification } from './typing/clearTypingNotification';
 import { EVENT_TYPING_START } from './actionConstants';

src/actions.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 export * from './account/accountActions';
 export * from './events/eventActions';
 export * from './nav/navActions';

src/alertWords/alertWordsActions.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { Dispatch, GetState } from '../types';
 import { getAlertWords } from '../api';
 import { INIT_ALERT_WORDS } from '../actionConstants';

src/alertWords/alertWordsReducer.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type {
   AlertWordsState,
   AlertWordsAction,

src/animation/AnimatedComponent.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import React, { PureComponent } from 'react';
 import type { ChildrenArray } from 'react';
 import { Animated, Easing } from 'react-native';

src/animation/AnimatedRotateComponent.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import React, { PureComponent } from 'react';
 import type { ChildrenArray } from 'react';
 import { Animated, Easing } from 'react-native';

src/animation/AnimatedScaleComponent.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import React, { PureComponent } from 'react';
 import type { ChildrenArray } from 'react';
 import { Animated, Easing } from 'react-native';

src/api/alert_words/getAlertWords.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { Auth } from '../apiTypes';
 import { apiGet } from '../apiFetch';
 

src/api/apiTypes.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { PresenceState } from '../types';
 
 export type Auth = {

src/api/checkCompatibility.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import userAgent from '../utils/userAgent';
 
 // check with server if current mobile app is compatible with latest backend

src/api/devFetchApiKey.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { Auth } from './apiTypes';
 import { apiPost } from './apiFetch';
 

src/api/devListUsers.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { Auth, ApiResponseSuccess, DevUser } from './apiTypes';
 import { apiGet } from './apiFetch';
 

src/api/emoji_reactions/emojiReactionAdd.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { ApiResponse, Auth } from '../apiTypes';
 import { apiPost } from '../apiFetch';
 

src/api/emoji_reactions/emojiReactionRemove.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { Auth, ApiResponse } from '../apiTypes';
 import { apiDelete } from '../apiFetch';
 

src/api/fetchApiKey.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { Auth, ApiResponseSuccess } from './apiTypes';
 import { apiPost } from './apiFetch';
 

src/api/focusPing.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { ApiResponseWithPresence, Auth } from './apiTypes';
 import { apiPost } from './apiFetch';
 

src/api/getTopics.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { Auth, Topic } from './apiTypes';
 import { apiGet } from './apiFetch';
 

src/api/index.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 export { default as queueMarkAsRead } from './queueMarkAsRead';
 export { default as checkCompatibility } from './checkCompatibility';
 export { default as devFetchApiKey } from './devFetchApiKey';

src/api/mark_as_read/markAllAsRead.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { ApiResponse, Auth } from '../apiTypes';
 import { apiPost } from '../apiFetch';
 

src/api/mark_as_read/markStreamAsRead.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { ApiResponse, Auth } from '../apiTypes';
 import { apiPost } from '../apiFetch';
 

src/api/mark_as_read/markTopicAsRead.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { ApiResponse, Auth } from '../apiTypes';
 import { apiPost } from '../apiFetch';
 

src/api/messages/deleteMessage.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { ApiResponse, Auth } from '../apiTypes';
 import { apiPatch } from '../apiFetch';
 

src/api/messages/getMessageContentById.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { Auth } from '../apiTypes';
 import { apiGet } from '../apiFetch';
 

src/api/messages/getMessages.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { Auth, Message, Narrow } from '../apiTypes';
 import { apiGet } from '../apiFetch';
 

src/api/messages/messagesFlags.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { ApiResponse, Auth } from '../apiTypes';
 import { apiPost } from '../apiFetch';
 

src/api/messages/sendMessage.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 
 import type { ApiResponse, Auth } from '../apiTypes';
 import { apiPost } from '../apiFetch';

src/api/notifications/unregisterPush.android.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { Auth } from '../apiTypes';
 import { apiDelete } from '../apiFetch';
 

src/api/notifications/unregisterPush.ios.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { Auth } from '../apiTypes';
 import { apiDelete } from '../apiFetch';
 

src/api/pollForEvents.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { Auth } from './apiTypes';
 import { apiGet } from './apiFetch';
 

src/api/realm/getRealmEmojis.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { Auth, RealmEmojiState } from '../apiTypes';
 import { apiGet } from '../apiFetch';
 

src/api/realm/getRealmFilters.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { Auth, RealmFilter } from '../apiTypes';
 import { apiGet } from '../apiFetch';
 

src/api/registerForEvents.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { Auth } from './apiTypes';
 import { apiPost } from './apiFetch';
 

src/api/settings/getServerSettings.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { ApiServerSettings } from '../apiTypes';
 import { apiGet } from '../apiFetch';
 

src/api/settings/toggleMobilePushSettings.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { ApiResponse, Auth } from '../apiTypes';
 import { apiPatch } from '../apiFetch';
 

src/api/streams/createStream.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { ApiResponse, Auth } from '../apiTypes';
 import { apiPost } from '../apiFetch';
 

src/api/streams/deleteStream.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { ApiResponse, Auth } from '../apiTypes';
 import { apiDelete } from '../apiFetch';
 

src/api/streams/getStreams.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { Auth, Stream } from '../apiTypes';
 import { apiGet } from '../apiFetch';
 

src/api/streams/updateStream.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { ApiResponse, Auth } from '../apiTypes';
 import { apiPatch } from '../apiFetch';
 

src/api/subscriptions/getSubscriptions.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { Auth, Subscription } from '../apiTypes';
 import { apiGet } from '../apiFetch';
 

src/api/subscriptions/muteStream.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { ApiResponse, Auth } from '../apiTypes';
 import { apiPost } from '../apiFetch';
 

src/api/subscriptions/muteTopic.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { ApiResponse, Auth } from '../apiTypes';
 import { apiPatch } from '../apiFetch';
 

src/api/subscriptions/subscriptionAdd.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { ApiResponse, Auth } from '../apiTypes';
 import { apiPost } from '../apiFetch';
 

src/api/subscriptions/subscriptionRemove.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { ApiResponse, Auth } from '../apiTypes';
 import { apiDelete } from '../apiFetch';
 

src/api/subscriptions/toggleMuteStream.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { ApiResponse, Auth } from '../apiTypes';
 import { apiPost } from '../apiFetch';
 

src/api/subscriptions/togglePinStream.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { ApiResponse, Auth } from '../apiTypes';
 import { apiPost } from '../apiFetch';
 

src/api/subscriptions/toggleStreamNotifications.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { ApiResponse, Auth } from '../apiTypes';
 import { apiPost } from '../apiFetch';
 

src/api/subscriptions/unmuteTopic.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { ApiResponse, Auth } from '../apiTypes';
 import { apiPatch } from '../apiFetch';
 

src/api/typing.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { ApiResponse, Auth, TypingOperation } from './apiTypes';
 import { apiPost } from './apiFetch';
 

src/api/uploadFile.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { Auth } from './apiTypes';
 import { apiFile } from './apiFetch';
 import { getFileExtension, getMimeTypeFromFileExtension } from '../utils/url';

src/api/user_groups/createUserGroup.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { ApiResponse, Auth } from '../apiTypes';
 import { apiPost } from '../apiFetch';
 

src/api/user_groups/deleteUserGroup.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { ApiResponse, Auth } from '../apiTypes';
 import { apiDelete } from '../apiFetch';
 

src/api/user_groups/editUserGroup.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { ApiResponse, Auth } from '../apiTypes';
 import { apiPatch } from '../apiFetch';
 

src/api/user_groups/editUserGroupMembers.js

@@ -1,4 +1,4 @@
-/* @flow */
+/* @flow strict-local */
 import type { ApiResponse, Auth } from '../apiTypes';
 import { apiPost } from '../apiFetch';