ref(reactions) Re-write using TypeScript (#11603)

react/features/app/types.ts

@@ -0,0 +1,4 @@
+export interface IStore {
+    getState: Function,
+    dispatch: Function
+}

react/features/reactions/actions.any.ts

@@ -1,5 +1,3 @@
-// @flow
-
 import {
     ADD_REACTION_BUFFER,
     ADD_REACTION_MESSAGE,
@@ -8,18 +6,18 @@ import {
     SEND_REACTIONS,
     SET_REACTION_QUEUE
 } from './actionTypes';
-import { type ReactionEmojiProps } from './constants';
+import { ReactionEmojiProps } from './constants';
+import { ReactionsAction } from './reducer';
 
 /**
  * Sets the reaction queue.
  *
- * @param {Array} value - The new queue.
- * @returns {Function}
+ * @param {Array} queue - The new queue.
  */
-export function setReactionQueue(value: Array<ReactionEmojiProps>) {
+export function setReactionQueue(queue: Array<ReactionEmojiProps>): ReactionsAction {
     return {
         type: SET_REACTION_QUEUE,
-        value
+        queue
     };
 }
 
@@ -27,26 +25,21 @@ export function setReactionQueue(value: Array<ReactionEmojiProps>) {
 /**
  * Removes a reaction from the queue.
  *
- * @param {number} uid - Id of the reaction to be removed.
- * @returns {void}
+ * @param {string} uid - Id of the reaction to be removed.
  */
-export function removeReaction(uid: number) {
+export function removeReaction(uid: string): Function {
     return (dispatch: Function, getState: Function) => {
         const queue = getState()['features/reactions'].queue;
 
-        dispatch(setReactionQueue(queue.filter(reaction => reaction.uid !== uid)));
+        dispatch(setReactionQueue(queue.filter((reaction: ReactionEmojiProps) => reaction.uid !== uid)));
     };
 }
 
 
 /**
  * Sends the reactions buffer to everyone in the conference.
- *
- * @returns {{
- *     type: SEND_REACTION
- * }}
  */
-export function sendReactions() {
+export function sendReactions(): ReactionsAction {
     return {
         type: SEND_REACTIONS
     };
@@ -56,12 +49,8 @@ export function sendReactions() {
  * Adds a reaction to the local buffer.
  *
  * @param {string} reaction - The reaction to be added.
- * @returns {{
- *     type: ADD_REACTION_BUFFER,
- *     reaction: string
- * }}
  */
-export function addReactionToBuffer(reaction: string) {
+export function addReactionToBuffer(reaction: string): ReactionsAction {
     return {
         type: ADD_REACTION_BUFFER,
         reaction
@@ -70,12 +59,8 @@ export function addReactionToBuffer(reaction: string) {
 
 /**
  * Clears the reaction buffer.
- *
- * @returns {{
- *     type: FLUSH_REACTION_BUFFER
- * }}
  */
-export function flushReactionBuffer() {
+export function flushReactionBuffer(): ReactionsAction {
     return {
         type: FLUSH_REACTION_BUFFER
     };
@@ -85,12 +70,8 @@ export function flushReactionBuffer() {
  * Adds a reaction message to the chat.
  *
  * @param {string} message - The reaction message.
- * @returns {{
- *     type: ADD_REACTION_MESSAGE,
- *     message: string
- * }}
  */
-export function addReactionsToChat(message: string) {
+export function addReactionsToChat(message: string): ReactionsAction {
     return {
         type: ADD_REACTION_MESSAGE,
         message
@@ -101,12 +82,8 @@ export function addReactionsToChat(message: string) {
  * Adds reactions to the animation queue.
  *
  * @param {Array} reactions - The reactions to be animated.
- * @returns {{
- *     type: PUSH_REACTIONS,
- *     reactions: Array
- * }}
  */
-export function pushReactions(reactions: Array<string>) {
+export function pushReactions(reactions: Array<string>): ReactionsAction {
     return {
         type: PUSH_REACTIONS,
         reactions

react/features/reactions/actions.web.ts

@@ -1,16 +1,13 @@
-// @flow
-
 import {
     SHOW_SOUNDS_NOTIFICATION,
     TOGGLE_REACTIONS_VISIBLE
 } from './actionTypes';
+import { ReactionsAction } from './reducer';
 
 /**
  * Toggles the visibility of the reactions menu.
- *
- * @returns {Object}
  */
-export function toggleReactionsMenuVisibility() {
+export function toggleReactionsMenuVisibility(): ReactionsAction {
     return {
         type: TOGGLE_REACTIONS_VISIBLE
     };
@@ -18,10 +15,8 @@ export function toggleReactionsMenuVisibility() {
 
 /**
  * Displays the disable sounds notification.
- *
- * @returns {Object}
  */
-export function displayReactionSoundsNotification() {
+export function displayReactionSoundsNotification(): ReactionsAction {
     return {
         type: SHOW_SOUNDS_NOTIFICATION
     };

react/features/reactions/components/web/RaiseHandButton.js

@@ -1,5 +1,3 @@
-// @flow
-
 import { translate } from '../../../base/i18n';
 import { IconRaisedHand } from '../../../base/icons';
 import { getLocalParticipant, hasRaisedHand } from '../../../base/participants';
@@ -15,7 +13,7 @@ type Props = AbstractButtonProps & {
     /**
      * Whether or not the hand is raised.
      */
-     raisedHand: boolean,
+    raisedHand: boolean,
 };
 
 /**

react/features/reactions/components/web/ReactionEmoji.tsx

@@ -1,10 +1,10 @@
-// @flow
-
 import React, { Component } from 'react';
 
+// @ts-ignore
 import { connect } from '../../../base/redux';
 import { removeReaction } from '../../actions.any';
 import { REACTIONS } from '../../constants';
+import { IStore } from '../../../app/types';
 
 type Props = {
 
@@ -16,12 +16,12 @@ type Props = {
     /**
      * Id of the reaction.
      */
-    uid: Number,
+    uid: string,
 
     /**
      * Removes reaction from redux state.
      */
-    removeReaction: Function,
+    reactionRemove: Function,
 
     /**
      * Index of the reaction in the queue.
@@ -64,7 +64,7 @@ class ReactionEmoji extends Component<Props, State> {
      * @inheritdoc
      */
     componentDidMount() {
-        setTimeout(() => this.props.removeReaction(this.props.uid), 5000);
+        setTimeout(() => this.props.reactionRemove(this.props.uid), 5000);
     }
 
     /**
@@ -86,11 +86,8 @@ class ReactionEmoji extends Component<Props, State> {
     }
 }
 
-const mapDispatchToProps = {
-    removeReaction
-};
+const mapDispatchToProps = (dispatch: IStore['dispatch']) => ({
+    reactionRemove: (uid: string) => dispatch(removeReaction(uid))
+});
 
-export default connect(
-    null,
-    mapDispatchToProps
-)(ReactionEmoji);
+export default connect(null, mapDispatchToProps)(ReactionEmoji);

react/features/reactions/components/web/ReactionsMenu.tsx

@@ -1,7 +1,3 @@
-// @flow
-
-/* eslint-disable react/jsx-no-bind */
-
 import { withStyles } from '@material-ui/styles';
 import clsx from 'clsx';
 import React, { Component } from 'react';
@@ -11,20 +7,34 @@ import {
     createReactionMenuEvent,
     createToolbarEvent,
     sendAnalytics
+    // @ts-ignore
 } from '../../../analytics';
+import { IStore } from '../../../app/types';
+// @ts-ignore
 import { isMobileBrowser } from '../../../base/environment/utils';
+// @ts-ignore
 import { translate } from '../../../base/i18n';
+// @ts-ignore
 import { getLocalParticipant, hasRaisedHand, raiseHand } from '../../../base/participants';
+// @ts-ignore
 import { connect } from '../../../base/redux';
+// @ts-ignore
 import { GifsMenu, GifsMenuButton } from '../../../gifs/components';
+// @ts-ignore
 import { isGifEnabled, isGifsMenuOpen } from '../../../gifs/functions';
+// @ts-ignore
 import { dockToolbox } from '../../../toolbox/actions.web';
 import { addReactionToBuffer } from '../../actions.any';
 import { toggleReactionsMenuVisibility } from '../../actions.web';
 import { REACTIONS, REACTIONS_MENU_HEIGHT } from '../../constants';
 
+// @ts-ignore
 import ReactionButton from './ReactionButton';
 
+interface Classes {
+    overflow: string
+}
+
 type Props = {
 
     /**
@@ -60,7 +70,7 @@ type Props = {
     /**
      * An object containing the CSS classes.
      */
-    classes: Object,
+    classes: Classes,
 
     /**
      * The Redux Dispatch function.
@@ -80,7 +90,7 @@ type Props = {
 
 declare var APP: Object;
 
-const styles = theme => {
+const styles = (theme: any) => {
     return {
         overflow: {
             width: 'auto',
@@ -114,10 +124,6 @@ class ReactionsMenu extends Component<Props> {
         this._getReactionButtons = this._getReactionButtons.bind(this);
     }
 
-    _onToolbarToggleRaiseHand: () => void;
-
-    _getReactionButtons: () => Array<React$Element<*>>;
-
     /**
      * Implements React Component's componentDidMount.
      *
@@ -190,6 +196,7 @@ class ReactionsMenu extends Component<Props> {
                 sendAnalytics(createReactionMenuEvent(key));
             }
 
+            // @ts-ignore
             return (<ReactionButton
                 accessibilityLabel = { t(`toolbar.accessibilityLabel.${key}`) }
                 icon = { REACTIONS[key].emoji }
@@ -219,6 +226,7 @@ class ReactionsMenu extends Component<Props> {
                 </div>
                 {_isMobile && (
                     <div className = 'raise-hand-row'>
+                        {/* @ts-ignore */}
                         <ReactionButton
                             accessibilityLabel = { t('toolbar.accessibilityLabel.raiseHand') }
                             icon = '✋'
@@ -242,7 +250,7 @@ class ReactionsMenu extends Component<Props> {
  * @param {Object} state - Redux state.
  * @returns {Object}
  */
-function mapStateToProps(state) {
+function mapStateToProps(state: any) {
     const localParticipant = getLocalParticipant(state);
 
     return {
@@ -260,12 +268,13 @@ function mapStateToProps(state) {
  * @param {Object} dispatch - Redux dispatch.
  * @returns {Object}
  */
-function mapDispatchToProps(dispatch) {
+function mapDispatchToProps(dispatch: IStore['dispatch']) {
     return {
         dispatch,
         ...bindActionCreators(
         {
             _dockToolbox: dockToolbox
+        // @ts-ignore
         }, dispatch)
     };
 }
@@ -273,4 +282,5 @@ function mapDispatchToProps(dispatch) {
 export default translate(connect(
     mapStateToProps,
     mapDispatchToProps
+    // @ts-ignore
 )(withStyles(styles)(ReactionsMenu)));

react/features/reactions/components/web/ReactionsMenuButton.tsx

@@ -1,18 +1,25 @@
 // @flow
 
 import React, { useCallback } from 'react';
+// @ts-ignore
 import { useSelector } from 'react-redux';
 
+// @ts-ignore
 import { isMobileBrowser } from '../../../base/environment/utils';
+// @ts-ignore
 import { translate } from '../../../base/i18n';
+// @ts-ignore
 import { IconArrowUp } from '../../../base/icons';
+// @ts-ignore
 import { connect } from '../../../base/redux';
+// @ts-ignore
 import ToolboxButtonWithIconPopup from '../../../base/toolbox/components/web/ToolboxButtonWithIconPopup';
 import { toggleReactionsMenuVisibility } from '../../actions.web';
-import { type ReactionEmojiProps } from '../../constants';
+import { ReactionEmojiProps } from '../../constants';
 import { getReactionsQueue, isReactionsEnabled } from '../../functions.any';
 import { getReactionsMenuVisibility } from '../../functions.web';
 
+// @ts-ignore
 import RaiseHandButton from './RaiseHandButton';
 import ReactionEmoji from './ReactionEmoji';
 import ReactionsMenu from './ReactionsMenu';
@@ -111,11 +118,9 @@ function ReactionsMenuButton({
                         ariaExpanded = { isOpen }
                         ariaHasPopup = { true }
                         ariaLabel = { t('toolbar.accessibilityLabel.reactionsMenu') }
-                        buttonKey = { buttonKey }
                         icon = { IconArrowUp }
                         iconDisabled = { false }
                         iconId = 'reactions-menu-button'
-                        notifyMode = { notifyMode }
                         onPopoverClose = { toggleReactionsMenu }
                         onPopoverOpen = { openReactionsMenu }
                         popoverContent = { reactionsMenu }
@@ -141,7 +146,7 @@ function ReactionsMenuButton({
  * @param {Object} state - Redux state.
  * @returns {Object}
  */
-function mapStateToProps(state) {
+function mapStateToProps(state: any) {
     return {
         _reactionsEnabled: isReactionsEnabled(state),
         isOpen: getReactionsMenuVisibility(state),

react/features/reactions/constants.ts

@@ -1,5 +1,3 @@
-// @flow
-
 import {
     CLAP_SOUND_FILES,
     LAUGH_SOUND_FILES,
@@ -87,7 +85,7 @@ export const SILENCE_SOUND_ID = `${REACTION_SOUND}_SILENCE_`;
  */
 export const RAISE_HAND_SOUND_ID = 'RAISE_HAND_SOUND';
 
-export type ReactionEmojiProps = {
+export interface ReactionEmojiProps {
 
     /**
      * Reaction to be displayed.
@@ -97,13 +95,22 @@ export type ReactionEmojiProps = {
     /**
      * Id of the reaction.
      */
-    uid: number
+    uid: string
 }
 
 export const SOUNDS_THRESHOLDS = [ 1, 4, 10 ];
 
+interface IReactions {
+    [key: string]: {
+        message: string;
+        emoji: string;
+        shortcutChar: string;
+        soundId: string;
+        soundFiles: string[];
+    }
+}
 
-export const REACTIONS = {
+export const REACTIONS: IReactions = {
     like: {
         message: ':thumbs_up:',
         emoji: '👍',
@@ -147,3 +154,12 @@ export const REACTIONS = {
         soundFiles: SILENCE_SOUND_FILES
     }
 };
+
+export type ReactionThreshold = {
+    reaction: string,
+    threshold: number
+}
+
+export interface MuteCommandAttributes {
+    startReactionsMuted?: string;
+}

react/features/reactions/functions.any.ts

@@ -1,21 +1,21 @@
-// @flow
-
 import { v4 as uuidv4 } from 'uuid';
 
+// @ts-ignore
 import { getFeatureFlag, REACTIONS_ENABLED } from '../base/flags';
+// @ts-ignore
 import { getLocalParticipant } from '../base/participants';
+// @ts-ignore
 import { extractFqnFromPath } from '../dynamic-branding/functions.any';
 
-import { REACTIONS, SOUNDS_THRESHOLDS } from './constants';
+import { ReactionEmojiProps, REACTIONS, ReactionThreshold, SOUNDS_THRESHOLDS } from './constants';
 import logger from './logger';
 
 /**
  * Returns the queue of reactions.
  *
  * @param {Object} state - The state of the application.
- * @returns {boolean}
  */
-export function getReactionsQueue(state: Object) {
+export function getReactionsQueue(state: any): Array<ReactionEmojiProps> {
     return state['features/reactions'].queue;
 }
 
@@ -23,20 +23,18 @@ export function getReactionsQueue(state: Object) {
  * Returns chat message from reactions buffer.
  *
  * @param {Array} buffer - The reactions buffer.
- * @returns {string}
  */
-export function getReactionMessageFromBuffer(buffer: Array<string>) {
-    return buffer.map(reaction => REACTIONS[reaction].message).reduce((acc, val) => `${acc}${val}`);
+export function getReactionMessageFromBuffer(buffer: Array<string>): string {
+    return buffer.map<string>(reaction => REACTIONS[reaction].message).reduce((acc, val) => `${acc}${val}`);
 }
 
 /**
  * Returns reactions array with uid.
  *
  * @param {Array} buffer - The reactions buffer.
- * @returns {Array}
  */
-export function getReactionsWithId(buffer: Array<string>) {
-    return buffer.map<Object>(reaction => {
+export function getReactionsWithId(buffer: Array<string>): Array<ReactionEmojiProps> {
+    return buffer.map<ReactionEmojiProps>(reaction => {
         return {
             reaction,
             uid: uuidv4()
@@ -49,9 +47,8 @@ export function getReactionsWithId(buffer: Array<string>) {
  *
  * @param {Object} state - The redux state object.
  * @param {Array} reactions - Reactions array to be sent.
- * @returns {void}
  */
-export async function sendReactionsWebhook(state: Object, reactions: Array<?string>) {
+export async function sendReactionsWebhook(state: any, reactions: Array<string>) {
     const { webhookProxyUrl: url } = state['features/base/config'];
     const { conference } = state['features/base/conference'];
     const { jwt } = state['features/base/jwt'];
@@ -96,9 +93,8 @@ export async function sendReactionsWebhook(state: Object, reactions: Array<?stri
  * Returns unique reactions from the reactions buffer.
  *
  * @param {Array} reactions - The reactions buffer.
- * @returns {Array}
  */
-function getUniqueReactions(reactions: Array<string>) {
+function getUniqueReactions(reactions: Array<string>): Array<string> {
     return [ ...new Set(reactions) ];
 }
 
@@ -107,9 +103,8 @@ function getUniqueReactions(reactions: Array<string>) {
  *
  * @param {Array} reactions - Array of reactions.
  * @param {string} reaction - Reaction to get frequency for.
- * @returns {number}
  */
-function getReactionFrequency(reactions: Array<string>, reaction: string) {
+function getReactionFrequency(reactions: Array<string>, reaction: string): number {
     return reactions.filter(r => r === reaction).length;
 }
 
@@ -117,9 +112,8 @@ function getReactionFrequency(reactions: Array<string>, reaction: string) {
  * Returns the threshold number for a given frequency.
  *
  * @param {number} frequency - Frequency of reaction.
- * @returns {number}
  */
-function getSoundThresholdByFrequency(frequency) {
+function getSoundThresholdByFrequency(frequency: number): number {
     for (const i of SOUNDS_THRESHOLDS) {
         if (frequency <= i) {
             return i;
@@ -133,12 +127,11 @@ function getSoundThresholdByFrequency(frequency) {
  * Returns unique reactions with threshold.
  *
  * @param {Array} reactions - The reactions buffer.
- * @returns {Array}
  */
-export function getReactionsSoundsThresholds(reactions: Array<string>) {
+export function getReactionsSoundsThresholds(reactions: Array<string>): Array<ReactionThreshold> {
     const unique = getUniqueReactions(reactions);
 
-    return unique.map<Object>(reaction => {
+    return unique.map<ReactionThreshold>(reaction => {
         return {
             reaction,
             threshold: getSoundThresholdByFrequency(getReactionFrequency(reactions, reaction))
@@ -150,9 +143,8 @@ export function getReactionsSoundsThresholds(reactions: Array<string>) {
  * Whether or not the reactions are enabled.
  *
  * @param {Object} state - The Redux state object.
- * @returns {boolean}
  */
-export function isReactionsEnabled(state: Object) {
+export function isReactionsEnabled(state: any): boolean {
     const { disableReactions } = state['features/base/config'];
 
     if (navigator.product === 'ReactNative') {

react/features/reactions/functions.web.ts

@@ -1,11 +1,8 @@
-// @flow
-
 /**
  * Returns the visibility state of the reactions menu.
  *
  * @param {Object} state - The state of the application.
- * @returns {boolean}
  */
-export function getReactionsMenuVisibility(state: Object) {
+export function getReactionsMenuVisibility(state: any): boolean {
     return state['features/reactions'].visible;
 }

react/features/reactions/logger.ts

@@ -1,5 +1,4 @@
-// @flow
-
+// @ts-ignore
 import { getLogger } from '../base/logging/functions';
 
 export default getLogger('features/base/reactions');

react/features/reactions/middleware.ts

@@ -1,24 +1,31 @@
-// @flow
-
+// @ts-ignore
 import { batch } from 'react-redux';
-
+// @ts-ignore
 import { createReactionSoundsDisabledEvent, sendAnalytics } from '../analytics';
+// @ts-ignore
 import { APP_WILL_MOUNT, APP_WILL_UNMOUNT } from '../base/app';
 import {
     CONFERENCE_JOIN_IN_PROGRESS,
     SET_START_REACTIONS_MUTED,
     setStartReactionsMuted
+    // @ts-ignore
 } from '../base/conference';
 import {
     getParticipantById,
     getParticipantCount,
     isLocalParticipantModerator
+    // @ts-ignore
 } from '../base/participants';
+// @ts-ignore
 import { MiddlewareRegistry } from '../base/redux';
 import { SETTINGS_UPDATED } from '../base/settings/actionTypes';
+// @ts-ignore
 import { updateSettings } from '../base/settings/actions';
+// @ts-ignore
 import { playSound, registerSound, unregisterSound } from '../base/sounds';
+// @ts-ignore
 import { getDisabledSounds } from '../base/sounds/functions.any';
+// @ts-ignore
 import { NOTIFICATION_TIMEOUT_TYPE, showNotification } from '../notifications';
 
 import {
@@ -28,7 +35,6 @@ import {
     PUSH_REACTIONS,
     SHOW_SOUNDS_NOTIFICATION
 } from './actionTypes';
-import { displayReactionSoundsNotification } from './actions';
 import {
     addReactionsToChat,
     flushReactionBuffer,
@@ -36,13 +42,15 @@ import {
     sendReactions,
     setReactionQueue
 } from './actions.any';
+import { displayReactionSoundsNotification } from './actions.web';
 import {
     ENDPOINT_REACTION_NAME,
     RAISE_HAND_SOUND_ID,
     REACTIONS,
     REACTION_SOUND,
     SOUNDS_THRESHOLDS,
-    MUTE_REACTIONS_COMMAND
+    MUTE_REACTIONS_COMMAND,
+    MuteCommandAttributes
 } from './constants';
 import {
     getReactionMessageFromBuffer,
@@ -52,15 +60,16 @@ import {
 } from './functions.any';
 import logger from './logger';
 import { RAISE_HAND_SOUND_FILE } from './sounds';
+import { IStore } from '../app/types';
 
 /**
  * Middleware which intercepts Reactions actions to handle changes to the
  * visibility timeout of the Reactions.
  *
- * @param {Store} store - The redux store.
+ * @param {IStore} store - The redux store.
  * @returns {Function}
  */
-MiddlewareRegistry.register(store => next => action => {
+MiddlewareRegistry.register((store: IStore) => (next: Function) => (action:any) => {
     const { dispatch, getState } = store;
 
     switch (action.type) {
@@ -108,7 +117,7 @@ MiddlewareRegistry.register(store => next => action => {
         const { conference } = action;
 
         conference.addCommandListener(
-            MUTE_REACTIONS_COMMAND, ({ attributes }, id) => {
+            MUTE_REACTIONS_COMMAND, ({ attributes }: { attributes: MuteCommandAttributes }, id: any) => {
                 _onMuteReactionsCommand(attributes, id, store);
             });
         break;
@@ -232,9 +241,8 @@ MiddlewareRegistry.register(store => next => action => {
  * @param {Object} store - The redux store. Used to calculate and dispatch
  * updates.
  * @private
- * @returns {void}
  */
-function _onMuteReactionsCommand(attributes = {}, id, store) {
+function _onMuteReactionsCommand(attributes: MuteCommandAttributes = {}, id: string, store: IStore) {
     const state = store.getState();
 
     // We require to know who issued the command because (1) only a
@@ -259,6 +267,7 @@ function _onMuteReactionsCommand(attributes = {}, id, store) {
     }
 
     const oldState = Boolean(state['features/base/conference'].startReactionsMuted);
+    // @ts-ignore
     const newState = attributes.startReactionsMuted === 'true';
 
     if (oldState !== newState) {

react/features/reactions/reducer.ts

@@ -1,5 +1,4 @@
-// @flow
-
+// @ts-ignore
 import { ReducerRegistry } from '../base/redux';
 
 import {
@@ -9,60 +8,70 @@ import {
     FLUSH_REACTION_BUFFER,
     SHOW_SOUNDS_NOTIFICATION
 } from './actionTypes';
+import { ReactionEmojiProps } from './constants';
+
+interface State {
+    /**
+     * The indicator that determines whether the reactions menu is visible.
+     */
+    visible: boolean,
+    /**
+     * An array that contains the reactions buffer to be sent.
+     */
+    buffer: Array<string>,
+    /**
+     * A number, non-zero value which identifies the timer created by a call
+     * to setTimeout().
+     */
+    timeoutID: number|null,
+    /**
+    * The array of reactions to animate.
+    */
+    queue: Array<ReactionEmojiProps>,
+
+    /**
+     * Whether or not the disable reaction sounds notification was shown.
+     */
+    notificationDisplayed: boolean
+}
+
+export interface ReactionsAction extends Partial<State> {
+    /**
+     * The message to be added to the chat.
+     */
+    message?: string,
+    /**
+     * The reaction to be added to buffer.
+     */
+    reaction?: string,
+    /**
+     * The reactions to be added to the animation queue.
+     */
+    reactions?: Array<string>,
+    /**
+     * The action type.
+     */
+    type: string
+}
 
 /**
  * Returns initial state for reactions' part of Redux store.
  *
  * @private
- * @returns {{
- *     visible: boolean,
- *     message: string,
- *     timeoutID: number,
- *     queue: Array,
- *     notificationDisplayed: boolean
- * }}
  */
-function _getInitialState() {
+function _getInitialState(): State {
     return {
-        /**
-         * The indicator that determines whether the reactions menu is visible.
-         *
-         * @type {boolean}
-         */
         visible: false,
-
-        /**
-         * An array that contains the reactions buffer to be sent.
-         *
-         * @type {Array}
-         */
         buffer: [],
-
-        /**
-         * A number, non-zero value which identifies the timer created by a call
-         * to setTimeout().
-         *
-         * @type {number|null}
-         */
         timeoutID: null,
-
-        /**
-         * The array of reactions to animate.
-         *
-         * @type {Array}
-         */
         queue: [],
-
-        /**
-         * Whether or not the disable reaction sounds notification was shown.
-         */
         notificationDisplayed: false
     };
 }
 
 ReducerRegistry.register(
     'features/reactions',
-    (state: Object = _getInitialState(), action: Object) => {
+    (state: State = _getInitialState(), action: ReactionsAction) => {
         switch (action.type) {
 
         case TOGGLE_REACTIONS_VISIBLE:
@@ -88,7 +97,7 @@ ReducerRegistry.register(
         case SET_REACTION_QUEUE: {
             return {
                 ...state,
-                queue: action.value
+                queue: action.queue
             };
         }