Coding style: formatting, comments

react/features/conference/components/Conference.native.js

     _onHardwareBackPress: Function,
 
     /**
-     * Number of participants in the conference.
+     * The number of participants in the conference.
      *
      * @private
      */
                 this._onHardwareBackPress);
         }
 
-        // Show the toolbar if we are the only participant.
+        // Show the toolbox if we are the only participant.
         const { _participantCount, _setToolboxVisible } = this.props;
 
-        if (_participantCount === 1) {
-            _setToolboxVisible(true);
-        }
+        _participantCount === 1 && _setToolboxVisible(true);
     }
 
     /**
      * that this instance will receive.
      * @returns {void}
      */
-    componentWillReceiveProps(nextProps) {
-        const oldParticipantCount = this.props._participantCount;
-        const newParticipantCount = nextProps._participantCount;
-
-        if (oldParticipantCount === 1 && newParticipantCount > 1) {
-            this.props._setToolboxVisible(false);
-        } else if (oldParticipantCount > 1 && newParticipantCount === 1) {
-            this.props._setToolboxVisible(true);
+    componentWillReceiveProps({ _participantCount: newParticipantCount }) {
+        const {
+            _participantCount: oldParticipantCount,
+            _setToolboxVisible
+        } = this.props;
+
+        if (oldParticipantCount === 1) {
+            newParticipantCount > 1 && _setToolboxVisible(false);
+        } else if (oldParticipantCount > 1) {
+            newParticipantCount === 1 && _setToolboxVisible(true);
         }
     }
 
  * @private
  * @returns {{
  *     _connecting: boolean,
+ *     _participantCount: number,
  *     _reducedUI: boolean,
  *     _toolboxVisible: boolean
  * }}
         _connecting: Boolean(connecting_),
 
         /**
-         * Number of participants in the conference.
+         * The number of participants in the conference.
          *
          * @private
          * @type {number}

react/features/toolbox/reducer.js

 // @flow
 
-import { ReducerRegistry } from '../base/redux';
+import { ReducerRegistry, set } from '../base/redux';
 
 import {
     CLEAR_TOOLBOX_TIMEOUT,
             };
 
         case SET_TOOLBOX_VISIBLE:
-            return {
-                ...state,
-                visible: action.visible
-            };
+            return set(state, 'visible', action.visible);
         }
 
         return state;