All: Migrate away from deprecated/removed Core APIs

Summary of the changes:

* Build: Add jQuery 3.2.0-3.4.1 to versions UI can be tested against
* Build: Load jQuery & Migrate via HTTPS
* Build: Add package-lock.json to .gitignore
* Build: Update jQuery Migrate from 3.0.0 to 3.1.0
* Build: Allow to run tests against jQuery 3.x-git
* Build: Fix formatting according to JSCS rules
* Build: Disable JSCS for the inlined jQuery Color
* All: Switch from $.isArray to Array.isArray (jQuery.isArray will be
  removed in jQuery 4.0)
* All: Switch from `$.isFunction( x )` to `typeof x === "function"`
  (jQuery.isFunction will be removed in jQuery 4.0)
* All: Inline jQuery.isWindow as it'll be removed in jQuery 4.0
* Effects: Fix a timing issue in a variable declaration. Previously,
  a jQuery object was created, chained & assigned to a variable that
  was then accessed in a callback used inside of this chained
  definition. Due to a timing difference in when the callback fired for
  the first time in latest jQuery master, it was being called before
  the variable was defined.
* Tests: Make dialog & draggable unit tests less strict (newest jQuery
  returns fractional results in some cases, making comparisons fail when
  there's a tiny difference)
* All: Migrate from $.trim to bare String.prototype.trim (jQuery.trim
  will be deprecated in jQuery 3.5)

Closes gh-1901

1 files changed, 4 insertions, 4 deletions

diff --git a/ui/widgets/tabs.js b/ui/widgets/tabs.js
index 14f94ae83..0eb69ebe1 100644
--- a/ui/widgets/tabs.js
+++ b/ui/widgets/tabs.js
@@ -95,7 +95,7 @@ $.widget( "ui.tabs", {
 
 		// Take disabling tabs via class attribute from HTML
 		// into account and update option properly.
-		if ( $.isArray( options.disabled ) ) {
+		if ( Array.isArray( options.disabled ) ) {
 			options.disabled = $.uniqueSort( options.disabled.concat(
 				$.map( this.tabs.filter( ".ui-state-disabled" ), function( li ) {
 					return that.tabs.index( li );
@@ -502,7 +502,7 @@ $.widget( "ui.tabs", {
 	_setOptionDisabled: function( disabled ) {
 		var currentItem, li, i;
 
-		if ( $.isArray( disabled ) ) {
+		if ( Array.isArray( disabled ) ) {
 			if ( !disabled.length ) {
 				disabled = false;
 			} else if ( disabled.length === this.anchors.length ) {
@@ -790,7 +790,7 @@ $.widget( "ui.tabs", {
 			disabled = false;
 		} else {
 			index = this._getIndex( index );
-			if ( $.isArray( disabled ) ) {
+			if ( Array.isArray( disabled ) ) {
 				disabled = $.map( disabled, function( num ) {
 					return num !== index ? num : null;
 				} );
@@ -816,7 +816,7 @@ $.widget( "ui.tabs", {
 			if ( $.inArray( index, disabled ) !== -1 ) {
 				return;
 			}
-			if ( $.isArray( disabled ) ) {
+			if ( Array.isArray( disabled ) ) {
 				disabled = $.merge( [ index ], disabled ).sort();
 			} else {
 				disabled = [ index ];