MM-20404 Migrate 'components/announcement_bar/version_bar' module and…

… associated tests to TypeScript

components/announcement_bar/version_bar/index.ts

@@ -2,10 +2,10 @@
 // See LICENSE.txt for license information.
 
 import {connect} from 'react-redux';
-
+import {GlobalState} from 'mattermost-redux/types/store';
 import VersionBar from './version_bar';
 
-function mapStateToProps(state:any) {
+function mapStateToProps(state:GlobalState) {
     return {
         serverVersion: state.entities.general.serverVersion,
     };

components/announcement_bar/version_bar/version_bar.tsx

@@ -10,24 +10,24 @@ import {AnnouncementBarTypes} from 'utils/constants';
 
 import AnnouncementBar from '../default_announcement_bar';
 
-interface IMyComponentProps {
-    serverVersion?: string,
+interface Props {
+    serverVersion: string,
 }
 
-interface IMyComponentState {
-    serverVersionOnAppLoad?: string,
+interface State {
+    serverVersionOnAppLoad: string,
 }
 
-export default class VersionBar extends React.PureComponent <IMyComponentProps, IMyComponentState> {
-    constructor(props:IMyComponentProps) {
+export default class VersionBar extends React.PureComponent <Props, State> {
+    constructor(props:Props) {
         super(props);
 
         this.state = {
             serverVersionOnAppLoad: props.serverVersion,
         };
     }
 
-    static getDerivedStateFromProps(props:IMyComponentProps, state:IMyComponentState) {
+    static getDerivedStateFromProps(props:Props, state:State) {
         if (!state.serverVersionOnAppLoad && props.serverVersion) {
             return {
                 serverVersionOnAppLoad: props.serverVersion,

utils/server_version.tsx

@@ -12,7 +12,7 @@
  *     4.7.0.dev.3034fbc5fd566195d1b53e03890e35ff.true
  *     4.7.1.dev.d131dd02c5e6eec4693d9a0698aff95c.true
  */
-export function equalServerVersions(a?: string, b?: string): boolean {
+export function equalServerVersions(a: string, b: string): boolean {
     if (a === b) {
         return true;
     }