Add defensive code to prevent extension from not working (#1872)

app/components/quick_text_input.js

@@ -77,6 +77,10 @@ export default class QuickTextInput extends React.PureComponent {
         this.storedValue = this.props.value;
     }
 
+    isFocused() {
+        return this.input.isFocused();
+    }
+
     focus() {
         this.input.focus();
     }

share_extension/ios/error_message.js

@@ -43,7 +43,6 @@ export default function errorMessage(props) {
 
 errorMessage.propTypes = {
     close: PropTypes.func.isRequired,
-    formatMessage: PropTypes.func.isRequired,
 };
 
 const getStyleSheet = makeStyleSheetFromTheme((theme) => {

share_extension/ios/extension.js

@@ -7,6 +7,7 @@ import {Animated, Dimensions, NavigatorIOS, StyleSheet, View} from 'react-native
 
 import {Preferences} from 'mattermost-redux/constants';
 
+import initialState from 'app/initial_state';
 import mattermostBucket from 'app/mattermost_bucket';
 
 import ExtensionPost from './extension_post';
@@ -32,7 +33,7 @@ export default class SharedApp extends PureComponent {
         };
 
         mattermostBucket.readFromFile('entities', props.appGroupId).then((value) => {
-            this.entities = value;
+            this.entities = value || initialState;
             this.setState({init: true});
         });
     }

share_extension/ios/extension_post.js

@@ -232,7 +232,7 @@ export default class ExtensionPost extends PureComponent {
                 let totalSize = 0;
                 let exceededSize = false;
 
-                if (channel.type === General.GM_CHANNEL || channel.type === General.DM_CHANNEL) {
+                if (channel && (channel.type === General.GM_CHANNEL || channel.type === General.DM_CHANNEL)) {
                     channel = getChannel({entities}, channel.id);
                 }
 
@@ -590,7 +590,7 @@ export default class ExtensionPost extends PureComponent {
         const {currentUserId} = entities.users;
 
         // If no text and no files do nothing
-        if (!value && !files.length) {
+        if ((!value && !files.length) || !channel) {
             return;
         }