Build: Put all AMD modules in "src/" in strict mode

Fixes gh-3073

src/.jshintrc

@@ -7,6 +7,7 @@
 	"immed": true,
 	"noarg": true,
 	"quotmark": "double",
+	"strict": true,
 	"undef": true,
 	"unused": true,
 

src/ajax.js

@@ -13,6 +13,8 @@ define( [
 	"./serialize" // jQuery.param
 ], function( jQuery, document, rnotwhite, location, nonce, rquery ) {
 
+"use strict";
+
 var
 	r20 = /%20/g,
 	rhash = /#.*$/,

src/ajax/jsonp.js

@@ -5,6 +5,8 @@ define( [
 	"../ajax"
 ], function( jQuery, nonce, rquery ) {
 
+"use strict";
+
 var oldCallbacks = [],
 	rjsonp = /(=)\?(?=&|$)|\?\?/;
 

src/ajax/load.js

@@ -7,6 +7,8 @@ define( [
 	"../selector"
 ], function( jQuery ) {
 
+"use strict";
+
 /**
  * Load a url into a page
  */

src/ajax/parseXML.js

@@ -2,6 +2,8 @@ define( [
 	"../core"
 ], function( jQuery ) {
 
+"use strict";
+
 // Cross-browser xml parsing
 jQuery.parseXML = function( data ) {
 	var xml;

src/ajax/script.js

@@ -4,6 +4,8 @@ define( [
 	"../ajax"
 ], function( jQuery, document ) {
 
+"use strict";
+
 // Prevent auto-execution of scripts when no explicit dataType was provided (See gh-2432)
 jQuery.ajaxPrefilter( function( s ) {
 	if ( s.crossDomain ) {

src/ajax/var/location.js

@@ -1,3 +1,5 @@
 define( function() {
+	"use strict";
+
 	return window.location;
 } );

src/ajax/var/nonce.js

@@ -1,5 +1,7 @@
 define( [
 	"../../core"
 ], function( jQuery ) {
+	"use strict";
+
 	return jQuery.now();
 } );

src/ajax/var/rquery.js

@@ -1,3 +1,5 @@
 define( function() {
+	"use strict";
+
 	return ( /\?/ );
 } );

src/ajax/xhr.js

@@ -4,6 +4,8 @@ define( [
 	"../ajax"
 ], function( jQuery, support ) {
 
+"use strict";
+
 jQuery.ajaxSettings.xhr = function() {
 	try {
 		return new window.XMLHttpRequest();

src/attributes.js

@@ -6,6 +6,8 @@ define( [
 	"./attributes/val"
 ], function( jQuery ) {
 
+"use strict";
+
 // Return jQuery for attributes-only inclusion
 return jQuery;
 } );

src/attributes/attr.js

@@ -6,6 +6,8 @@ define( [
 	"../selector"
 ], function( jQuery, access, support, rnotwhite ) {
 
+"use strict";
+
 var boolHook,
 	attrHandle = jQuery.expr.attrHandle;
 

src/attributes/classes.js

@@ -5,6 +5,8 @@ define( [
 	"../core/init"
 ], function( jQuery, rnotwhite, dataPriv ) {
 
+"use strict";
+
 var rclass = /[\t\r\n\f]/g;
 
 function getClass( elem ) {

src/attributes/prop.js

@@ -5,6 +5,8 @@ define( [
 	"../selector"
 ], function( jQuery, access, support ) {
 
+"use strict";
+
 var rfocusable = /^(?:input|select|textarea|button)$/i,
 	rclickable = /^(?:a|area)$/i;
 

src/attributes/support.js

@@ -3,6 +3,8 @@ define( [
 	"../var/support"
 ], function( document, support ) {
 
+"use strict";
+
 ( function() {
 	var input = document.createElement( "input" ),
 		select = document.createElement( "select" ),

src/attributes/val.js

@@ -4,6 +4,8 @@ define( [
 	"../core/init"
 ], function( jQuery, support ) {
 
+"use strict";
+
 var rreturn = /\r/g,
 	rspaces = /[\x20\t\r\n\f]+/g;
 

src/callbacks.js

@@ -3,6 +3,8 @@ define( [
 	"./var/rnotwhite"
 ], function( jQuery, rnotwhite ) {
 
+"use strict";
+
 // Convert String-formatted options into Object-formatted ones
 function createOptions( options ) {
 	var object = {};

src/core.js

@@ -17,6 +17,8 @@ define( [
 	class2type, toString, hasOwn, fnToString, ObjectFunctionString,
 	support, DOMEval ) {
 
+"use strict";
+
 var
 	version = "@VERSION",
 

src/core/DOMEval.js

@@ -1,6 +1,8 @@
 define( [
 	"../var/document"
 ], function( document ) {
+	"use strict";
+
 	function DOMEval( code, doc ) {
 		doc = doc || document;
 

src/core/access.js

@@ -2,6 +2,8 @@ define( [
 	"../core"
 ], function( jQuery ) {
 
+"use strict";
+
 // Multifunctional method to get and set values of a collection
 // The value/s can optionally be executed if it's a function
 var access = function( elems, fn, key, value, chainable, emptyGet, raw ) {

src/core/init.js

@@ -6,6 +6,8 @@ define( [
 	"../traversing/findFilter"
 ], function( jQuery, document, rsingleTag ) {
 
+"use strict";
+
 // A central reference to the root jQuery(document)
 var rootjQuery,
 

src/core/parseHTML.js

@@ -8,6 +8,8 @@ define( [
 	"./support"
 ], function( jQuery, document, rsingleTag, buildFragment, support ) {
 
+"use strict";
+
 // Argument "data" should be string of html
 // context (optional): If specified, the fragment will be created in this context,
 // defaults to document

src/core/ready-no-deferred.js

@@ -3,6 +3,8 @@ define( [
 	"../var/document"
 ], function( jQuery, document ) {
 
+"use strict";
+
 var readyCallbacks = [],
 	readyFiring = false,
 	whenReady = function( fn ) {

src/core/ready.js

@@ -4,6 +4,8 @@ define( [
 	"../deferred"
 ], function( jQuery, document ) {
 
+"use strict";
+
 // The deferred used on DOM ready
 var readyList = jQuery.Deferred();
 

src/core/support.js

@@ -3,6 +3,8 @@ define( [
 	"../var/support"
 ], function( document, support ) {
 
+"use strict";
+
 // Support: Safari 8 only
 // In Safari 8 documents created via document.implementation.createHTMLDocument
 // collapse sibling forms: the second one becomes a child of the first one.

src/core/var/rsingleTag.js

@@ -1,4 +1,5 @@
 define( function() {
+	"use strict";
 
 	// Match a standalone tag
 	return ( /^<([a-z][^\/\0>:\x20\t\r\n\f]*)[\x20\t\r\n\f]*\/?>(?:<\/\1>|)$/i );

src/css.js

@@ -20,6 +20,8 @@ define( [
 ], function( jQuery, pnum, access, rmargin, document, rcssNum, rnumnonpx, cssExpand,
 	getStyles, swap, curCSS, adjustCSS, addGetHookIf, support ) {
 
+"use strict";
+
 var
 
 	// Swappable if display is none or starts with table

src/css/addGetHookIf.js

@@ -1,5 +1,7 @@
 define( function() {
 
+"use strict";
+
 function addGetHookIf( conditionFn, hookFn ) {
 
 	// Define the hook, we'll check on the first run if it's really needed.

src/css/adjustCSS.js

@@ -3,6 +3,8 @@ define( [
 	"../var/rcssNum"
 ], function( jQuery, rcssNum ) {
 
+"use strict";
+
 function adjustCSS( elem, prop, valueParts, tween ) {
 	var adjusted,
 		scale = 1,

src/css/curCSS.js

@@ -7,6 +7,8 @@ define( [
 	"../selector" // Get jQuery.contains
 ], function( jQuery, rnumnonpx, rmargin, getStyles, support ) {
 
+"use strict";
+
 function curCSS( elem, name, computed ) {
 	var width, minWidth, maxWidth, ret,
 		style = elem.style;

src/css/hiddenVisibleSelectors.js

@@ -3,6 +3,8 @@ define( [
 	"../selector"
 ], function( jQuery ) {
 
+"use strict";
+
 jQuery.expr.pseudos.hidden = function( elem ) {
 	return !jQuery.expr.pseudos.visible( elem );
 };

src/css/showHide.js

@@ -4,6 +4,8 @@ define( [
 	"../css/var/isHiddenWithinTree"
 ], function( jQuery, dataPriv, isHiddenWithinTree ) {
 
+"use strict";
+
 var defaultDisplayMap = {};
 
 function getDefaultDisplay( elem ) {

src/css/support.js

@@ -5,6 +5,8 @@ define( [
 	"../var/support"
 ], function( jQuery, document, documentElement, support ) {
 
+"use strict";
+
 ( function() {
 
 	// Executing both pixelPosition & boxSizingReliable tests require only one layout

src/css/var/cssExpand.js

@@ -1,3 +1,5 @@
 define( function() {
+	"use strict";
+
 	return [ "Top", "Right", "Bottom", "Left" ];
 } );

src/css/var/getStyles.js

@@ -1,4 +1,6 @@
 define( function() {
+	"use strict";
+
 	return function( elem ) {
 
 		// Support: IE <=11 only, Firefox <=30 (#15098, #14150)

src/css/var/isHiddenWithinTree.js

@@ -4,6 +4,7 @@ define( [
 
 	// css is assumed
 ], function( jQuery ) {
+	"use strict";
 
 	// isHiddenWithinTree reports if an element has a non-"none" display style (inline and/or
 	// through the CSS cascade), which is useful in deciding whether or not to make it visible.

src/css/var/rmargin.js

@@ -1,3 +1,5 @@
 define( function() {
+	"use strict";
+
 	return ( /^margin/ );
 } );

src/css/var/rnumnonpx.js

@@ -1,5 +1,7 @@
 define( [
 	"../../var/pnum"
 ], function( pnum ) {
+	"use strict";
+
 	return new RegExp( "^(" + pnum + ")(?!px)[a-z%]+$", "i" );
 } );

src/css/var/swap.js

@@ -1,5 +1,7 @@
 define( function() {
 
+"use strict";
+
 // A method for quickly swapping in/out CSS properties to get correct calculations.
 return function( elem, options, callback, args ) {
 	var ret, name,

src/data.js

@@ -5,6 +5,8 @@ define( [
 	"./data/var/dataUser"
 ], function( jQuery, access, dataPriv, dataUser ) {
 
+"use strict";
+
 //	Implementation Summary
 //
 //	1. Enforce API surface and semantic compatibility with 1.9.x branch

src/data/Data.js

@@ -4,6 +4,8 @@ define( [
 	"./var/acceptData"
 ], function( jQuery, rnotwhite, acceptData ) {
 
+"use strict";
+
 function Data() {
 	this.expando = jQuery.expando + Data.uid++;
 }

src/data/var/acceptData.js

@@ -1,5 +1,7 @@
 define( function() {
 
+"use strict";
+
 /**
  * Determines whether an object can have data
  */

src/data/var/dataPriv.js

@@ -1,5 +1,7 @@
 define( [
 	"../Data"
 ], function( Data ) {
+	"use strict";
+
 	return new Data();
 } );

src/data/var/dataUser.js

@@ -1,5 +1,7 @@
 define( [
 	"../Data"
 ], function( Data ) {
+	"use strict";
+
 	return new Data();
 } );

src/deferred/exceptionHook.js

@@ -3,6 +3,8 @@ define( [
 	"../deferred"
 ], function( jQuery ) {
 
+"use strict";
+
 // These usually indicate a programmer mistake during development,
 // warn about them ASAP rather than swallowing them by default.
 var rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/;

src/deprecated.js

@@ -2,6 +2,8 @@ define( [
 	"./core"
 ], function( jQuery ) {
 
+"use strict";
+
 jQuery.fn.extend( {
 
 	bind: function( types, data, fn ) {

src/dimensions.js

@@ -4,6 +4,8 @@ define( [
 	"./css"
 ], function( jQuery, access ) {
 
+"use strict";
+
 // Create innerHeight, innerWidth, height, width, outerHeight and outerWidth methods
 jQuery.each( { Height: "height", Width: "width" }, function( name, type ) {
 	jQuery.each( { padding: "inner" + name, content: type, "": "outer" + name },

src/effects.js

@@ -20,6 +20,8 @@ define( [
 ], function( jQuery, document, rcssNum, rnotwhite, cssExpand, isHiddenWithinTree, swap,
 	adjustCSS, dataPriv, showHide ) {
 
+"use strict";
+
 var
 	fxNow, timerId,
 	rfxtypes = /^(?:toggle|show|hide)$/,

src/effects/Tween.js

@@ -3,6 +3,8 @@ define( [
 	"../css"
 ], function( jQuery ) {
 
+"use strict";
+
 function Tween( elem, options, prop, end, easing ) {
 	return new Tween.prototype.init( elem, options, prop, end, easing );
 }

src/effects/animatedSelector.js

@@ -4,6 +4,8 @@ define( [
 	"../effects"
 ], function( jQuery ) {
 
+"use strict";
+
 jQuery.expr.pseudos.animated = function( elem ) {
 	return jQuery.grep( jQuery.timers, function( fn ) {
 		return elem === fn.elem;

src/event.js

@@ -9,6 +9,8 @@ define( [
 	"./selector"
 ], function( jQuery, document, rnotwhite, slice, dataPriv ) {
 
+"use strict";
+
 var
 	rkeyEvent = /^key/,
 	rmouseEvent = /^(?:mouse|pointer|contextmenu|drag|drop)|click/,

src/event/ajax.js

@@ -3,6 +3,8 @@ define( [
 	"../event"
 ], function( jQuery ) {
 
+"use strict";
+
 // Attach a bunch of functions for handling common AJAX events
 jQuery.each( [
 	"ajaxStart",

src/event/alias.js

@@ -5,6 +5,8 @@ define( [
 	"./trigger"
 ], function( jQuery ) {
 
+"use strict";
+
 jQuery.each( ( "blur focus focusin focusout resize scroll click dblclick " +
 	"mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave " +
 	"change select submit keydown keypress keyup contextmenu" ).split( " " ),

src/event/focusin.js

@@ -7,6 +7,8 @@ define( [
 	"./trigger"
 ], function( jQuery, dataPriv, support ) {
 
+"use strict";
+
 // Support: Firefox <=44
 // Firefox doesn't have focus(in | out) events
 // Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787

src/event/support.js

@@ -2,6 +2,8 @@ define( [
 	"../var/support"
 ], function( support ) {
 
+"use strict";
+
 support.focusin = "onfocusin" in window;
 
 return support;

src/event/trigger.js

@@ -8,6 +8,8 @@ define( [
 	"../event"
 ], function( jQuery, document, dataPriv, acceptData, hasOwn ) {
 
+"use strict";
+
 var rfocusMorph = /^(?:focusinfocus|focusoutblur)$/;
 
 jQuery.extend( jQuery.event, {

src/exports/amd.js

@@ -2,6 +2,8 @@ define( [
 	"../core"
 ], function( jQuery ) {
 
+"use strict";
+
 // Register as a named AMD module, since jQuery can be concatenated with other
 // files that may use define, but not via a proper concatenation script that
 // understands anonymous AMD modules. A named AMD is safest and most robust

src/exports/global.js

@@ -1,3 +1,7 @@
+// This file is included in a different way from all the others
+// so the "use strict" pragma is not needed.
+/* jshint strict: false */
+
 var
 
 	// Map over jQuery in case of overwrite

src/jquery.js

@@ -33,6 +33,8 @@ define( [
 	"./exports/amd"
 ], function( jQuery ) {
 
+"use strict";
+
 return ( window.jQuery = window.$ = jQuery );
 
 } );

src/manipulation.js

@@ -26,6 +26,8 @@ define( [
 	wrapMap, getAll, setGlobalEval, buildFragment, support,
 	dataPriv, dataUser, acceptData, DOMEval ) {
 
+"use strict";
+
 var
 	rxhtmlTag = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([a-z][^\/\0>\x20\t\r\n\f]*)[^>]*)\/>/gi,
 

src/manipulation/_evalUrl.js

@@ -2,6 +2,8 @@ define( [
 	"../ajax"
 ], function( jQuery ) {
 
+"use strict";
+
 jQuery._evalUrl = function( url ) {
 	return jQuery.ajax( {
 		url: url,

src/manipulation/buildFragment.js

@@ -7,6 +7,8 @@ define( [
 	"./setGlobalEval"
 ], function( jQuery, rtagName, rscriptType, wrapMap, getAll, setGlobalEval ) {
 
+"use strict";
+
 var rhtml = /<|&#?\w+;/;
 
 function buildFragment( elems, context, scripts, selection, ignored ) {

src/manipulation/getAll.js

@@ -2,6 +2,8 @@ define( [
 	"../core"
 ], function( jQuery ) {
 
+"use strict";
+
 function getAll( context, tag ) {
 
 	// Support: IE <=9 - 11 only

src/manipulation/setGlobalEval.js

@@ -2,6 +2,8 @@ define( [
 	"../data/var/dataPriv"
 ], function( dataPriv ) {
 
+"use strict";
+
 // Mark scripts as having already been evaluated
 function setGlobalEval( elems, refElements ) {
 	var i = 0,

src/manipulation/support.js

@@ -3,6 +3,8 @@ define( [
 	"../var/support"
 ], function( document, support ) {
 
+"use strict";
+
 ( function() {
 	var fragment = document.createDocumentFragment(),
 		div = fragment.appendChild( document.createElement( "div" ) ),

src/manipulation/var/rcheckableType.js

@@ -1,3 +1,5 @@
 define( function() {
+	"use strict";
+
 	return ( /^(?:checkbox|radio)$/i );
 } );

src/manipulation/var/rscriptType.js

@@ -1,3 +1,5 @@
 define( function() {
+	"use strict";
+
 	return ( /^$|\/(?:java|ecma)script/i );
 } );

src/manipulation/var/rtagName.js

@@ -1,3 +1,5 @@
 define( function() {
+	"use strict";
+
 	return ( /<([a-z][^\/\0>\x20\t\r\n\f]+)/i );
 } );

src/manipulation/wrapMap.js

@@ -1,5 +1,7 @@
 define( function() {
 
+"use strict";
+
 // We have to close these tags to support XHTML (#13200)
 var wrapMap = {
 

src/offset.js

@@ -13,6 +13,8 @@ define( [
 	"./selector" // contains
 ], function( jQuery, access, document, documentElement, rnumnonpx, curCSS, addGetHookIf, support ) {
 
+"use strict";
+
 /**
  * Gets a window from an element
  */

src/queue.js

@@ -5,6 +5,8 @@ define( [
 	"./callbacks"
 ], function( jQuery, dataPriv ) {
 
+"use strict";
+
 jQuery.extend( {
 	queue: function( elem, type, data ) {
 		var queue;

src/queue/delay.js

@@ -4,6 +4,8 @@ define( [
 	"../effects" // Delay is optional because of this dependency
 ], function( jQuery ) {
 
+"use strict";
+
 // Based off of the plugin by Clint Helfers, with permission.
 // https://web.archive.org/web/20100324014747/http://blindsignals.com/index.php/2009/07/jquery-delay/
 jQuery.fn.delay = function( time, type ) {

src/selector-native.js

@@ -6,6 +6,8 @@ define( [
 	"./var/indexOf"
 ], function( jQuery, document, documentElement, hasOwn, indexOf ) {
 
+"use strict";
+
 /*
  * Optional (non-Sizzle) selector module for custom builds.
  *

src/selector-sizzle.js

@@ -3,6 +3,8 @@ define( [
 	"../external/sizzle/dist/sizzle"
 ], function( jQuery, Sizzle ) {
 
+"use strict";
+
 jQuery.find = Sizzle;
 jQuery.expr = Sizzle.selectors;
 

src/serialize.js

@@ -6,6 +6,8 @@ define( [
 	"./attributes/prop"
 ], function( jQuery, rcheckableType ) {
 
+"use strict";
+
 var
 	rbracket = /\[\]$/,
 	rCRLF = /\r?\n/g,

src/traversing.js

@@ -9,6 +9,8 @@ define( [
 	"./selector"
 ], function( jQuery, indexOf, dir, siblings, rneedsContext ) {
 
+"use strict";
+
 var rparentsprev = /^(?:parents|prev(?:Until|All))/,
 
 	// Methods guaranteed to produce a unique set when starting from a unique set

src/traversing/findFilter.js

@@ -5,6 +5,8 @@ define( [
 	"../selector"
 ], function( jQuery, indexOf, rneedsContext ) {
 
+"use strict";
+
 var risSimple = /^.[^:#\[\.,]*$/;
 
 // Implement the identical functionality for filter and not

src/traversing/var/dir.js

@@ -2,6 +2,8 @@ define( [
 	"../../core"
 ], function( jQuery ) {
 
+"use strict";
+
 return function( elem, dir, until ) {
 	var matched = [],
 		truncate = until !== undefined;

src/traversing/var/rneedsContext.js

@@ -2,5 +2,7 @@ define( [
 	"../../core",
 	"../../selector"
 ], function( jQuery ) {
+	"use strict";
+
 	return jQuery.expr.match.needsContext;
 } );

src/traversing/var/siblings.js

@@ -1,5 +1,7 @@
 define( function() {
 
+"use strict";
+
 return function( n, elem ) {
 	var matched = [];
 

src/var/ObjectFunctionString.js

@@ -1,5 +1,7 @@
 define( [
 	"./fnToString"
 ], function( fnToString ) {
+	"use strict";
+
 	return fnToString.call( Object );
 } );

src/var/arr.js

@@ -1,3 +1,5 @@
 define( function() {
+	"use strict";
+
 	return [];
 } );

src/var/class2type.js

@@ -1,4 +1,5 @@
 define( function() {
+	"use strict";
 
 	// [[Class]] -> type pairs
 	return {};

src/var/concat.js

@@ -1,5 +1,7 @@
 define( [
 	"./arr"
 ], function( arr ) {
+	"use strict";
+
 	return arr.concat;
 } );

src/var/document.js

@@ -1,3 +1,5 @@
 define( function() {
+	"use strict";
+
 	return window.document;
 } );

src/var/documentElement.js

@@ -1,5 +1,7 @@
 define( [
 	"./document"
 ], function( document ) {
+	"use strict";
+
 	return document.documentElement;
 } );

src/var/fnToString.js

@@ -1,5 +1,7 @@
 define( [
 	"./hasOwn"
 ], function( hasOwn ) {
+	"use strict";
+
 	return hasOwn.toString;
 } );

src/var/getProto.js

@@ -1,3 +1,5 @@
 define( function() {
+	"use strict";
+
 	return Object.getPrototypeOf;
 } );

src/var/hasOwn.js

@@ -1,5 +1,7 @@
 define( [
 	"./class2type"
 ], function( class2type ) {
+	"use strict";
+
 	return class2type.hasOwnProperty;
 } );

src/var/indexOf.js

@@ -1,5 +1,7 @@
 define( [
 	"./arr"
 ], function( arr ) {
+	"use strict";
+
 	return arr.indexOf;
 } );

src/var/pnum.js

@@ -1,3 +1,5 @@
 define( function() {
+	"use strict";
+
 	return ( /[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/ ).source;
 } );

src/var/push.js

@@ -1,5 +1,7 @@
 define( [
 	"./arr"
 ], function( arr ) {
+	"use strict";
+
 	return arr.push;
 } );

src/var/rcssNum.js

@@ -2,6 +2,8 @@ define( [
 	"../var/pnum"
 ], function( pnum ) {
 
+"use strict";
+
 return new RegExp( "^(?:([+-])=|)(" + pnum + ")([a-z%]*)$", "i" );
 
 } );

src/var/rnotwhite.js

@@ -1,3 +1,5 @@
 define( function() {
+	"use strict";
+
 	return ( /\S+/g );
 } );

src/var/slice.js

@@ -1,5 +1,7 @@
 define( [
 	"./arr"
 ], function( arr ) {
+	"use strict";
+
 	return arr.slice;
 } );

src/var/support.js

@@ -1,4 +1,5 @@
 define( function() {
+	"use strict";
 
 	// All support tests are defined in their respective modules.
 	return {};

src/var/toString.js

@@ -1,5 +1,7 @@
 define( [
 	"./class2type"
 ], function( class2type ) {
+	"use strict";
+
 	return class2type.toString;
 } );

src/wrap.js

@@ -5,6 +5,8 @@ define( [
 	"./traversing" // parent, contents
 ], function( jQuery ) {
 
+"use strict";
+
 jQuery.fn.extend( {
 	wrapAll: function( html ) {
 		var wrap;

src/wrapper.js

@@ -14,6 +14,8 @@
  */
 ( function( global, factory ) {
 
+	"use strict";
+
 	if ( typeof module === "object" && typeof module.exports === "object" ) {
 
 		// For CommonJS and CommonJS-like environments where a proper `window`