3434 */
3535define ( function ( require , exports , module ) {
3636
37- var AppInit = require ( "utils/AppInit" ) ,
37+ const AppInit = require ( "utils/AppInit" ) ,
3838 EventDispatcher = require ( "utils/EventDispatcher" ) ;
3939
4040 // --- Constants -----------------------------------------------------------
@@ -43,73 +43,73 @@ define(function (require, exports, module) {
4343 * The built-in Files tab id.
4444 * @const {string}
4545 */
46- var SIDEBAR_TAB_FILES = "sidebar-tab-files" ;
46+ const SIDEBAR_TAB_FILES = "sidebar-tab-files" ;
4747
4848 // --- Events --------------------------------------------------------------
4949
5050 /**
5151 * Fired when a new tab is registered via `addTab`.
5252 * @const {string}
5353 */
54- var EVENT_TAB_ADDED = "tabAdded" ;
54+ const EVENT_TAB_ADDED = "tabAdded" ;
5555
5656 /**
5757 * Fired when a tab is removed via `removeTab`.
5858 * @const {string}
5959 */
60- var EVENT_TAB_REMOVED = "tabRemoved" ;
60+ const EVENT_TAB_REMOVED = "tabRemoved" ;
6161
6262 /**
6363 * Fired when the active tab changes via `setActiveTab`.
6464 * @const {string}
6565 */
66- var EVENT_TAB_CHANGED = "tabChanged" ;
66+ const EVENT_TAB_CHANGED = "tabChanged" ;
6767
6868 // --- Private state -------------------------------------------------------
6969
7070 /** @type {jQuery } */
71- var $navTabBar ;
71+ let $navTabBar ;
7272
7373 /** @type {jQuery } */
74- var $sidebar ;
74+ let $sidebar ;
7575
7676 /**
7777 * Ordered array of registered tab descriptors.
7878 * Each entry: { id, label, iconClass, priority, $tabItem }
7979 * @type {Array }
8080 */
81- var _tabs = [ ] ;
81+ const _tabs = [ ] ;
8282
8383 /**
8484 * Map from tabId -> array of DOM elements (not jQuery) associated with
8585 * that tab via `addToTab`.
8686 * @type {Object.<string, Array.<Element>> }
8787 */
88- var _tabContent = { } ;
88+ const _tabContent = { } ;
8989
9090 /**
9191 * Set of DOM elements that were appended to #sidebar by `addToTab` (i.e.
9292 * they were NOT already children of #sidebar). Used so `removeFromTab` can
9393 * decide whether to also detach the node from the DOM.
9494 * @type {Set.<Element> }
9595 */
96- var _appendedNodes = new Set ( ) ;
96+ const _appendedNodes = new Set ( ) ;
9797
9898 /**
9999 * Currently active tab id.
100100 * @type {string }
101101 */
102- var _activeTabId = SIDEBAR_TAB_FILES ;
102+ let _activeTabId = SIDEBAR_TAB_FILES ;
103103
104104 // --- IDs to always exclude from visibility toggling ----------------------
105105
106- var _EXCLUDED_IDS = { "mainNavBar" : true , "navTabBar" : true } ;
106+ const _EXCLUDED_IDS = { "mainNavBar" : true , "navTabBar" : true } ;
107107
108108 /**
109109 * CSS classes that mark structural/resizer elements which must never be
110110 * hidden by tab switching.
111111 */
112- var _EXCLUDED_CLASSES = [ "horz-resizer" , "vert-resizer" ] ;
112+ const _EXCLUDED_CLASSES = [ "horz-resizer" , "vert-resizer" ] ;
113113
114114 // --- Private helpers -----------------------------------------------------
115115
@@ -121,7 +121,7 @@ define(function (require, exports, module) {
121121 if ( _EXCLUDED_IDS [ node . id ] ) {
122122 return true ;
123123 }
124- for ( var i = 0 ; i < _EXCLUDED_CLASSES . length ; i ++ ) {
124+ for ( let i = 0 ; i < _EXCLUDED_CLASSES . length ; i ++ ) {
125125 if ( node . classList . contains ( _EXCLUDED_CLASSES [ i ] ) ) {
126126 return true ;
127127 }
@@ -136,7 +136,7 @@ define(function (require, exports, module) {
136136 $navTabBar . empty ( ) ;
137137 _tabs . sort ( function ( a , b ) { return a . priority - b . priority ; } ) ;
138138 _tabs . forEach ( function ( tab ) {
139- var $item = $ ( '<div class="sidebar-tab" data-tab-id="' + tab . id + '">' +
139+ const $item = $ ( '<div class="sidebar-tab" data-tab-id="' + tab . id + '">' +
140140 '<i class="' + tab . iconClass + '"></i>' +
141141 '<span>' + tab . label + '</span>' +
142142 '</div>' ) ;
@@ -168,8 +168,8 @@ define(function (require, exports, module) {
168168 * registered tab.
169169 */
170170 function _isNodeInAnyTab ( node ) {
171- var tabIds = Object . keys ( _tabContent ) ;
172- for ( var i = 0 ; i < tabIds . length ; i ++ ) {
171+ const tabIds = Object . keys ( _tabContent ) ;
172+ for ( let i = 0 ; i < tabIds . length ; i ++ ) {
173173 if ( _tabContent [ tabIds [ i ] ] . indexOf ( node ) !== - 1 ) {
174174 return true ;
175175 }
@@ -190,13 +190,13 @@ define(function (require, exports, module) {
190190 return ;
191191 }
192192
193- var children = $sidebar . children ( ) . toArray ( ) ;
193+ const children = $sidebar . children ( ) . toArray ( ) ;
194194
195195 if ( _activeTabId === SIDEBAR_TAB_FILES ) {
196196 // Files tab: show nodes that are in the files tab content OR
197197 // unassociated (not in any tab). Hide nodes that are exclusively
198198 // in other tabs.
199- var filesNodes = new Set ( _tabContent [ SIDEBAR_TAB_FILES ] || [ ] ) ;
199+ const filesNodes = new Set ( _tabContent [ SIDEBAR_TAB_FILES ] || [ ] ) ;
200200
201201 children . forEach ( function ( child ) {
202202 if ( _isExcludedNode ( child ) ) {
@@ -211,7 +211,7 @@ define(function (require, exports, module) {
211211 } else {
212212 // Non-files tab: show nodes associated with this tab, hide
213213 // everything else (except excluded nodes).
214- var activeNodes = new Set ( _tabContent [ _activeTabId ] || [ ] ) ;
214+ const activeNodes = new Set ( _tabContent [ _activeTabId ] || [ ] ) ;
215215
216216 children . forEach ( function ( child ) {
217217 if ( _isExcludedNode ( child ) ) {
@@ -241,13 +241,13 @@ define(function (require, exports, module) {
241241 options = options || { } ;
242242
243243 // Prevent duplicate registrations
244- for ( var i = 0 ; i < _tabs . length ; i ++ ) {
244+ for ( let i = 0 ; i < _tabs . length ; i ++ ) {
245245 if ( _tabs [ i ] . id === id ) {
246246 return ;
247247 }
248248 }
249249
250- var tab = {
250+ const tab = {
251251 id : id ,
252252 label : label ,
253253 iconClass : iconClass ,
@@ -270,7 +270,7 @@ define(function (require, exports, module) {
270270 * @param {jQuery|Element } $content DOM node or jQuery wrapper
271271 */
272272 function addToTab ( tabId , $content ) {
273- var node = $content instanceof $ ? $content [ 0 ] : $content ;
273+ const node = $content instanceof $ ? $content [ 0 ] : $content ;
274274 if ( ! node ) {
275275 return ;
276276 }
@@ -312,12 +312,12 @@ define(function (require, exports, module) {
312312 * @param {jQuery|Element } $content DOM node or jQuery wrapper
313313 */
314314 function removeFromTab ( tabId , $content ) {
315- var node = $content instanceof $ ? $content [ 0 ] : $content ;
315+ const node = $content instanceof $ ? $content [ 0 ] : $content ;
316316 if ( ! node || ! _tabContent [ tabId ] ) {
317317 return ;
318318 }
319319
320- var idx = _tabContent [ tabId ] . indexOf ( node ) ;
320+ const idx = _tabContent [ tabId ] . indexOf ( node ) ;
321321 if ( idx === - 1 ) {
322322 return ;
323323 }
@@ -355,8 +355,8 @@ define(function (require, exports, module) {
355355 return false ;
356356 }
357357
358- var removed = false ;
359- for ( var i = _tabs . length - 1 ; i >= 0 ; i -- ) {
358+ let removed = false ;
359+ for ( let i = _tabs . length - 1 ; i >= 0 ; i -- ) {
360360 if ( _tabs [ i ] . id === id ) {
361361 _tabs . splice ( i , 1 ) ;
362362 removed = true ;
@@ -388,8 +388,8 @@ define(function (require, exports, module) {
388388 */
389389 function setActiveTab ( id ) {
390390 // Verify the tab exists
391- var found = false ;
392- for ( var i = 0 ; i < _tabs . length ; i ++ ) {
391+ let found = false ;
392+ for ( let i = 0 ; i < _tabs . length ; i ++ ) {
393393 if ( _tabs [ i ] . id === id ) {
394394 found = true ;
395395 break ;
@@ -399,7 +399,7 @@ define(function (require, exports, module) {
399399 return ;
400400 }
401401
402- var previousTabId = _activeTabId ;
402+ const previousTabId = _activeTabId ;
403403 _activeTabId = id ;
404404
405405 // Update active class on tab items
@@ -450,7 +450,7 @@ define(function (require, exports, module) {
450450
451451 // Set up click handler for tab switching
452452 $navTabBar . on ( "click" , ".sidebar-tab" , function ( ) {
453- var tabId = $ ( this ) . attr ( "data-tab-id" ) ;
453+ const tabId = $ ( this ) . attr ( "data-tab-id" ) ;
454454 if ( tabId ) {
455455 setActiveTab ( tabId ) ;
456456 }
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