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

Fixes gh-3073

99 files changed, 195 insertions, 0 deletions

diff --git a/src/.jshintrc b/src/.jshintrc
index a45fdb5ba..c3506e70f 100644
--- a/src/.jshintrc
+++ b/src/.jshintrc
@@ -7,6 +7,7 @@
 	"immed": true,
 	"noarg": true,
 	"quotmark": "double",
+	"strict": true,
 	"undef": true,
 	"unused": true,
 
diff --git a/src/ajax.js b/src/ajax.js
index 436933159..fd6679936 100644
--- a/src/ajax.js
+++ b/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 = /#.*$/,
diff --git a/src/ajax/jsonp.js b/src/ajax/jsonp.js
index 666e5d1e6..8c406e722 100644
--- a/src/ajax/jsonp.js
+++ b/src/ajax/jsonp.js
@@ -5,6 +5,8 @@ define( [
 	"../ajax"
 ], function( jQuery, nonce, rquery ) {
 
+"use strict";
+
 var oldCallbacks = [],
 	rjsonp = /(=)\?(?=&|$)|\?\?/;
 
diff --git a/src/ajax/load.js b/src/ajax/load.js
index aa6e1cfab..1058dbf52 100644
--- a/src/ajax/load.js
+++ b/src/ajax/load.js
@@ -7,6 +7,8 @@ define( [
 	"../selector"
 ], function( jQuery ) {
 
+"use strict";
+
 /**
  * Load a url into a page
  */
diff --git a/src/ajax/parseXML.js b/src/ajax/parseXML.js
index 8b13139a5..acf7ab259 100644
--- a/src/ajax/parseXML.js
+++ b/src/ajax/parseXML.js
@@ -2,6 +2,8 @@ define( [
 	"../core"
 ], function( jQuery ) {
 
+"use strict";
+
 // Cross-browser xml parsing
 jQuery.parseXML = function( data ) {
 	var xml;
diff --git a/src/ajax/script.js b/src/ajax/script.js
index 485ba397b..6e0d21e99 100644
--- a/src/ajax/script.js
+++ b/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 ) {
diff --git a/src/ajax/var/location.js b/src/ajax/var/location.js
index ff9578e99..4171d18c3 100644
--- a/src/ajax/var/location.js
+++ b/src/ajax/var/location.js
@@ -1,3 +1,5 @@
 define( function() {
+	"use strict";
+
 	return window.location;
 } );
diff --git a/src/ajax/var/nonce.js b/src/ajax/var/nonce.js
index 83fd557c8..6e23708a8 100644
--- a/src/ajax/var/nonce.js
+++ b/src/ajax/var/nonce.js
@@ -1,5 +1,7 @@
 define( [
 	"../../core"
 ], function( jQuery ) {
+	"use strict";
+
 	return jQuery.now();
 } );
diff --git a/src/ajax/var/rquery.js b/src/ajax/var/rquery.js
index 0502146ca..06fc37439 100644
--- a/src/ajax/var/rquery.js
+++ b/src/ajax/var/rquery.js
@@ -1,3 +1,5 @@
 define( function() {
+	"use strict";
+
 	return ( /\?/ );
 } );
diff --git a/src/ajax/xhr.js b/src/ajax/xhr.js
index 5a93891ab..33dafb01d 100644
--- a/src/ajax/xhr.js
+++ b/src/ajax/xhr.js
@@ -4,6 +4,8 @@ define( [
 	"../ajax"
 ], function( jQuery, support ) {
 
+"use strict";
+
 jQuery.ajaxSettings.xhr = function() {
 	try {
 		return new window.XMLHttpRequest();
diff --git a/src/attributes.js b/src/attributes.js
index 691e0c034..2d801e563 100644
--- a/src/attributes.js
+++ b/src/attributes.js
@@ -6,6 +6,8 @@ define( [
 	"./attributes/val"
 ], function( jQuery ) {
 
+"use strict";
+
 // Return jQuery for attributes-only inclusion
 return jQuery;
 } );
diff --git a/src/attributes/attr.js b/src/attributes/attr.js
index 51bba773e..0e4e3b225 100644
--- a/src/attributes/attr.js
+++ b/src/attributes/attr.js
@@ -6,6 +6,8 @@ define( [
 	"../selector"
 ], function( jQuery, access, support, rnotwhite ) {
 
+"use strict";
+
 var boolHook,
 	attrHandle = jQuery.expr.attrHandle;
 
diff --git a/src/attributes/classes.js b/src/attributes/classes.js
index 7933873c4..2e8a8caba 100644
--- a/src/attributes/classes.js
+++ b/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 ) {
diff --git a/src/attributes/prop.js b/src/attributes/prop.js
index 908c19ff6..2f73a8508 100644
--- a/src/attributes/prop.js
+++ b/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;
 
diff --git a/src/attributes/support.js b/src/attributes/support.js
index ee6115a68..af60e9694 100644
--- a/src/attributes/support.js
+++ b/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" ),
diff --git a/src/attributes/val.js b/src/attributes/val.js
index ace17040b..757680607 100644
--- a/src/attributes/val.js
+++ b/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;
 
diff --git a/src/callbacks.js b/src/callbacks.js
index b032c8f1c..4c4f73327 100644
--- a/src/callbacks.js
+++ b/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 = {};
diff --git a/src/core.js b/src/core.js
index 7c2433529..9dd05294e 100644
--- a/src/core.js
+++ b/src/core.js
@@ -17,6 +17,8 @@ define( [
 	class2type, toString, hasOwn, fnToString, ObjectFunctionString,
 	support, DOMEval ) {
 
+"use strict";
+
 var
 	version = "@VERSION",
 
diff --git a/src/core/DOMEval.js b/src/core/DOMEval.js
index 222b0ca2a..c49c12e5e 100644
--- a/src/core/DOMEval.js
+++ b/src/core/DOMEval.js
@@ -1,6 +1,8 @@
 define( [
 	"../var/document"
 ], function( document ) {
+	"use strict";
+
 	function DOMEval( code, doc ) {
 		doc = doc || document;
 
diff --git a/src/core/access.js b/src/core/access.js
index 19f79efa4..735c75711 100644
--- a/src/core/access.js
+++ b/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 ) {
diff --git a/src/core/init.js b/src/core/init.js
index a00d58791..19a3c7c68 100644
--- a/src/core/init.js
+++ b/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,
 
diff --git a/src/core/parseHTML.js b/src/core/parseHTML.js
index 260fd3ca7..21ff6bfa7 100644
--- a/src/core/parseHTML.js
+++ b/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
diff --git a/src/core/ready-no-deferred.js b/src/core/ready-no-deferred.js
index 66f209bf7..5baed2e5c 100644
--- a/src/core/ready-no-deferred.js
+++ b/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 ) {
diff --git a/src/core/ready.js b/src/core/ready.js
index b98ff5ba0..bb4e222d3 100644
--- a/src/core/ready.js
+++ b/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();
 
diff --git a/src/core/support.js b/src/core/support.js
index 3857a252e..13ae02f08 100644
--- a/src/core/support.js
+++ b/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.
diff --git a/src/core/var/rsingleTag.js b/src/core/var/rsingleTag.js
index 1ddf95ed4..4d6e8a0ac 100644
--- a/src/core/var/rsingleTag.js
+++ b/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 );
diff --git a/src/css.js b/src/css.js
index 9e673fc18..131df67de 100644
--- a/src/css.js
+++ b/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
diff --git a/src/css/addGetHookIf.js b/src/css/addGetHookIf.js
index 9cd21f683..e4bb49a67 100644
--- a/src/css/addGetHookIf.js
+++ b/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.
diff --git a/src/css/adjustCSS.js b/src/css/adjustCSS.js
index 48fcfec05..f1d1f00ce 100644
--- a/src/css/adjustCSS.js
+++ b/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,
diff --git a/src/css/curCSS.js b/src/css/curCSS.js
index 5f738c2d0..313da4222 100644
--- a/src/css/curCSS.js
+++ b/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;
diff --git a/src/css/hiddenVisibleSelectors.js b/src/css/hiddenVisibleSelectors.js
index e155acda7..d7a9339dd 100644
--- a/src/css/hiddenVisibleSelectors.js
+++ b/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 );
 };
diff --git a/src/css/showHide.js b/src/css/showHide.js
index 7e9002ca5..11b1479d9 100644
--- a/src/css/showHide.js
+++ b/src/css/showHide.js
@@ -4,6 +4,8 @@ define( [
 	"../css/var/isHiddenWithinTree"
 ], function( jQuery, dataPriv, isHiddenWithinTree ) {
 
+"use strict";
+
 var defaultDisplayMap = {};
 
 function getDefaultDisplay( elem ) {
diff --git a/src/css/support.js b/src/css/support.js
index 73a5e6e1a..883d0e53e 100644
--- a/src/css/support.js
+++ b/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
diff --git a/src/css/var/cssExpand.js b/src/css/var/cssExpand.js
index 9f8194dc8..dd2007c3f 100644
--- a/src/css/var/cssExpand.js
+++ b/src/css/var/cssExpand.js
@@ -1,3 +1,5 @@
 define( function() {
+	"use strict";
+
 	return [ "Top", "Right", "Bottom", "Left" ];
 } );
diff --git a/src/css/var/getStyles.js b/src/css/var/getStyles.js
index f3aab668b..0b893acf0 100644
--- a/src/css/var/getStyles.js
+++ b/src/css/var/getStyles.js
@@ -1,4 +1,6 @@
 define( function() {
+	"use strict";
+
 	return function( elem ) {
 
 		// Support: IE <=11 only, Firefox <=30 (#15098, #14150)
diff --git a/src/css/var/isHiddenWithinTree.js b/src/css/var/isHiddenWithinTree.js
index c01d228d8..3cfb93e16 100644
--- a/src/css/var/isHiddenWithinTree.js
+++ b/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.
diff --git a/src/css/var/rmargin.js b/src/css/var/rmargin.js
index 9be221243..0fbfbd853 100644
--- a/src/css/var/rmargin.js
+++ b/src/css/var/rmargin.js
@@ -1,3 +1,5 @@
 define( function() {
+	"use strict";
+
 	return ( /^margin/ );
 } );
diff --git a/src/css/var/rnumnonpx.js b/src/css/var/rnumnonpx.js
index ed13f0b98..056cda7ad 100644
--- a/src/css/var/rnumnonpx.js
+++ b/src/css/var/rnumnonpx.js
@@ -1,5 +1,7 @@
 define( [
 	"../../var/pnum"
 ], function( pnum ) {
+	"use strict";
+
 	return new RegExp( "^(" + pnum + ")(?!px)[a-z%]+$", "i" );
 } );
diff --git a/src/css/var/swap.js b/src/css/var/swap.js
index b6d3b679f..1a9556bad 100644
--- a/src/css/var/swap.js
+++ b/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,
diff --git a/src/data.js b/src/data.js
index 80e8bacf5..49964f7d5 100644
--- a/src/data.js
+++ b/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
diff --git a/src/data/Data.js b/src/data/Data.js
index cc8822a3c..0901c6bfe 100644
--- a/src/data/Data.js
+++ b/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++;
 }
diff --git a/src/data/var/acceptData.js b/src/data/var/acceptData.js
index 6e15af127..7d0fb238e 100644
--- a/src/data/var/acceptData.js
+++ b/src/data/var/acceptData.js
@@ -1,5 +1,7 @@
 define( function() {
 
+"use strict";
+
 /**
  * Determines whether an object can have data
  */
diff --git a/src/data/var/dataPriv.js b/src/data/var/dataPriv.js
index 9a1343ce1..72713c88c 100644
--- a/src/data/var/dataPriv.js
+++ b/src/data/var/dataPriv.js
@@ -1,5 +1,7 @@
 define( [
 	"../Data"
 ], function( Data ) {
+	"use strict";
+
 	return new Data();
 } );
diff --git a/src/data/var/dataUser.js b/src/data/var/dataUser.js
index 9a1343ce1..72713c88c 100644
--- a/src/data/var/dataUser.js
+++ b/src/data/var/dataUser.js
@@ -1,5 +1,7 @@
 define( [
 	"../Data"
 ], function( Data ) {
+	"use strict";
+
 	return new Data();
 } );
diff --git a/src/deferred/exceptionHook.js b/src/deferred/exceptionHook.js
index 99d2819bf..7d4a296f4 100644
--- a/src/deferred/exceptionHook.js
+++ b/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$/;
diff --git a/src/deprecated.js b/src/deprecated.js
index 79522e9b1..9fcc6b7da 100644
--- a/src/deprecated.js
+++ b/src/deprecated.js
@@ -2,6 +2,8 @@ define( [
 	"./core"
 ], function( jQuery ) {
 
+"use strict";
+
 jQuery.fn.extend( {
 
 	bind: function( types, data, fn ) {
diff --git a/src/dimensions.js b/src/dimensions.js
index 3d4dbff10..46e7b1c46 100644
--- a/src/dimensions.js
+++ b/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 },
diff --git a/src/effects.js b/src/effects.js
index 4adb23024..6a1fb3a28 100644
--- a/src/effects.js
+++ b/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)$/,
diff --git a/src/effects/Tween.js b/src/effects/Tween.js
index 399823901..66f4df106 100644
--- a/src/effects/Tween.js
+++ b/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 );
 }
diff --git a/src/effects/animatedSelector.js b/src/effects/animatedSelector.js
index 2fe1f71a7..24c1bfba2 100644
--- a/src/effects/animatedSelector.js
+++ b/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;
diff --git a/src/event.js b/src/event.js
index ddd117cfe..e382de6d2 100644
--- a/src/event.js
+++ b/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/,
diff --git a/src/event/ajax.js b/src/event/ajax.js
index 98e194bf0..500b36cdd 100644
--- a/src/event/ajax.js
+++ b/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",
diff --git a/src/event/alias.js b/src/event/alias.js
index b1b8f701f..863c94ad2 100644
--- a/src/event/alias.js
+++ b/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( " " ),
diff --git a/src/event/focusin.js b/src/event/focusin.js
index c7af0df2c..7faef2981 100644
--- a/src/event/focusin.js
+++ b/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
diff --git a/src/event/support.js b/src/event/support.js
index 1c4d416e5..e3db9ad83 100644
--- a/src/event/support.js
+++ b/src/event/support.js
@@ -2,6 +2,8 @@ define( [
 	"../var/support"
 ], function( support ) {
 
+"use strict";
+
 support.focusin = "onfocusin" in window;
 
 return support;
diff --git a/src/event/trigger.js b/src/event/trigger.js
index 8f5f77845..53acadbec 100644
--- a/src/event/trigger.js
+++ b/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, {
diff --git a/src/exports/amd.js b/src/exports/amd.js
index add6eb9bd..cbb1ef580 100644
--- a/src/exports/amd.js
+++ b/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
diff --git a/src/exports/global.js b/src/exports/global.js
index be9cbfb3a..c8d593cbb 100644
--- a/src/exports/global.js
+++ b/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
diff --git a/src/jquery.js b/src/jquery.js
index 4cc9c8a90..744a98e5d 100644
--- a/src/jquery.js
+++ b/src/jquery.js
@@ -33,6 +33,8 @@ define( [
 	"./exports/amd"
 ], function( jQuery ) {
 
+"use strict";
+
 return ( window.jQuery = window.$ = jQuery );
 
 } );
diff --git a/src/manipulation.js b/src/manipulation.js
index a041408d7..d53eaa021 100644
--- a/src/manipulation.js
+++ b/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,
 
diff --git a/src/manipulation/_evalUrl.js b/src/manipulation/_evalUrl.js
index 572fe30c7..f9ec7027c 100644
--- a/src/manipulation/_evalUrl.js
+++ b/src/manipulation/_evalUrl.js
@@ -2,6 +2,8 @@ define( [
 	"../ajax"
 ], function( jQuery ) {
 
+"use strict";
+
 jQuery._evalUrl = function( url ) {
 	return jQuery.ajax( {
 		url: url,
diff --git a/src/manipulation/buildFragment.js b/src/manipulation/buildFragment.js
index 1db3caa38..bcb508531 100644
--- a/src/manipulation/buildFragment.js
+++ b/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 ) {
diff --git a/src/manipulation/getAll.js b/src/manipulation/getAll.js
index 5f3141048..85490d50e 100644
--- a/src/manipulation/getAll.js
+++ b/src/manipulation/getAll.js
@@ -2,6 +2,8 @@ define( [
 	"../core"
 ], function( jQuery ) {
 
+"use strict";
+
 function getAll( context, tag ) {
 
 	// Support: IE <=9 - 11 only
diff --git a/src/manipulation/setGlobalEval.js b/src/manipulation/setGlobalEval.js
index 8ca69a03a..cf95240a4 100644
--- a/src/manipulation/setGlobalEval.js
+++ b/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,
diff --git a/src/manipulation/support.js b/src/manipulation/support.js
index d01c439ee..4a5d9af4c 100644
--- a/src/manipulation/support.js
+++ b/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" ) ),
diff --git a/src/manipulation/var/rcheckableType.js b/src/manipulation/var/rcheckableType.js
index 4c95394ac..25bbcb418 100644
--- a/src/manipulation/var/rcheckableType.js
+++ b/src/manipulation/var/rcheckableType.js
@@ -1,3 +1,5 @@
 define( function() {
+	"use strict";
+
 	return ( /^(?:checkbox|radio)$/i );
 } );
diff --git a/src/manipulation/var/rscriptType.js b/src/manipulation/var/rscriptType.js
index 0c77c8a58..7237c8a31 100644
--- a/src/manipulation/var/rscriptType.js
+++ b/src/manipulation/var/rscriptType.js
@@ -1,3 +1,5 @@
 define( function() {
+	"use strict";
+
 	return ( /^$|\/(?:java|ecma)script/i );
 } );
diff --git a/src/manipulation/var/rtagName.js b/src/manipulation/var/rtagName.js
index 1f8751ed8..d565dd3de 100644
--- a/src/manipulation/var/rtagName.js
+++ b/src/manipulation/var/rtagName.js
@@ -1,3 +1,5 @@
 define( function() {
+	"use strict";
+
 	return ( /<([a-z][^\/\0>\x20\t\r\n\f]+)/i );
 } );
diff --git a/src/manipulation/wrapMap.js b/src/manipulation/wrapMap.js
index 921c2eac5..1f446f7d7 100644
--- a/src/manipulation/wrapMap.js
+++ b/src/manipulation/wrapMap.js
@@ -1,5 +1,7 @@
 define( function() {
 
+"use strict";
+
 // We have to close these tags to support XHTML (#13200)
 var wrapMap = {
 
diff --git a/src/offset.js b/src/offset.js
index 18e6eebed..54442eb45 100644
--- a/src/offset.js
+++ b/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
  */
diff --git a/src/queue.js b/src/queue.js
index 813c41cd3..3a626a2fc 100644
--- a/src/queue.js
+++ b/src/queue.js
@@ -5,6 +5,8 @@ define( [
 	"./callbacks"
 ], function( jQuery, dataPriv ) {
 
+"use strict";
+
 jQuery.extend( {
 	queue: function( elem, type, data ) {
 		var queue;
diff --git a/src/queue/delay.js b/src/queue/delay.js
index 4def286de..d471eedc5 100644
--- a/src/queue/delay.js
+++ b/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 ) {
diff --git a/src/selector-native.js b/src/selector-native.js
index 3b2525d69..da837a004 100644
--- a/src/selector-native.js
+++ b/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.
  *
diff --git a/src/selector-sizzle.js b/src/selector-sizzle.js
index 1dc0ea324..ff7bc70ee 100644
--- a/src/selector-sizzle.js
+++ b/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;
 
diff --git a/src/serialize.js b/src/serialize.js
index 5f9d6c0ae..b8742ab31 100644
--- a/src/serialize.js
+++ b/src/serialize.js
@@ -6,6 +6,8 @@ define( [
 	"./attributes/prop"
 ], function( jQuery, rcheckableType ) {
 
+"use strict";
+
 var
 	rbracket = /\[\]$/,
 	rCRLF = /\r?\n/g,
diff --git a/src/traversing.js b/src/traversing.js
index 8525c0a5d..50cd2d6ee 100644
--- a/src/traversing.js
+++ b/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
diff --git a/src/traversing/findFilter.js b/src/traversing/findFilter.js
index 913034933..542852475 100644
--- a/src/traversing/findFilter.js
+++ b/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
diff --git a/src/traversing/var/dir.js b/src/traversing/var/dir.js
index b98fdca0e..366a823d6 100644
--- a/src/traversing/var/dir.js
+++ b/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;
diff --git a/src/traversing/var/rneedsContext.js b/src/traversing/var/rneedsContext.js
index f57fd9de2..d0663cee8 100644
--- a/src/traversing/var/rneedsContext.js
+++ b/src/traversing/var/rneedsContext.js
@@ -2,5 +2,7 @@ define( [
 	"../../core",
 	"../../selector"
 ], function( jQuery ) {
+	"use strict";
+
 	return jQuery.expr.match.needsContext;
 } );
diff --git a/src/traversing/var/siblings.js b/src/traversing/var/siblings.js
index 8a8880bf7..952629d0c 100644
--- a/src/traversing/var/siblings.js
+++ b/src/traversing/var/siblings.js
@@ -1,5 +1,7 @@
 define( function() {
 
+"use strict";
+
 return function( n, elem ) {
 	var matched = [];
 
diff --git a/src/var/ObjectFunctionString.js b/src/var/ObjectFunctionString.js
index 570197908..f9e850fd8 100644
--- a/src/var/ObjectFunctionString.js
+++ b/src/var/ObjectFunctionString.js
@@ -1,5 +1,7 @@
 define( [
 	"./fnToString"
 ], function( fnToString ) {
+	"use strict";
+
 	return fnToString.call( Object );
 } );
diff --git a/src/var/arr.js b/src/var/arr.js
index 3fd364000..84713d838 100644
--- a/src/var/arr.js
+++ b/src/var/arr.js
@@ -1,3 +1,5 @@
 define( function() {
+	"use strict";
+
 	return [];
 } );
diff --git a/src/var/class2type.js b/src/var/class2type.js
index 3a6932e11..4365d46a2 100644
--- a/src/var/class2type.js
+++ b/src/var/class2type.js
@@ -1,4 +1,5 @@
 define( function() {
+	"use strict";
 
 	// [[Class]] -> type pairs
 	return {};
diff --git a/src/var/concat.js b/src/var/concat.js
index 9787bead6..e47c19d75 100644
--- a/src/var/concat.js
+++ b/src/var/concat.js
@@ -1,5 +1,7 @@
 define( [
 	"./arr"
 ], function( arr ) {
+	"use strict";
+
 	return arr.concat;
 } );
diff --git a/src/var/document.js b/src/var/document.js
index bb9428484..dd3939df4 100644
--- a/src/var/document.js
+++ b/src/var/document.js
@@ -1,3 +1,5 @@
 define( function() {
+	"use strict";
+
 	return window.document;
 } );
diff --git a/src/var/documentElement.js b/src/var/documentElement.js
index e0c0aea6b..0e3f8b48c 100644
--- a/src/var/documentElement.js
+++ b/src/var/documentElement.js
@@ -1,5 +1,7 @@
 define( [
 	"./document"
 ], function( document ) {
+	"use strict";
+
 	return document.documentElement;
 } );
diff --git a/src/var/fnToString.js b/src/var/fnToString.js
index a92e6ebb4..18c43ff30 100644
--- a/src/var/fnToString.js
+++ b/src/var/fnToString.js
@@ -1,5 +1,7 @@
 define( [
 	"./hasOwn"
 ], function( hasOwn ) {
+	"use strict";
+
 	return hasOwn.toString;
 } );
diff --git a/src/var/getProto.js b/src/var/getProto.js
index dccf3040a..965fab8fb 100644
--- a/src/var/getProto.js
+++ b/src/var/getProto.js
@@ -1,3 +1,5 @@
 define( function() {
+	"use strict";
+
 	return Object.getPrototypeOf;
 } );
diff --git a/src/var/hasOwn.js b/src/var/hasOwn.js
index 92f323e04..44ab6807d 100644
--- a/src/var/hasOwn.js
+++ b/src/var/hasOwn.js
@@ -1,5 +1,7 @@
 define( [
 	"./class2type"
 ], function( class2type ) {
+	"use strict";
+
 	return class2type.hasOwnProperty;
 } );
diff --git a/src/var/indexOf.js b/src/var/indexOf.js
index 5283841b2..8320b98e5 100644
--- a/src/var/indexOf.js
+++ b/src/var/indexOf.js
@@ -1,5 +1,7 @@
 define( [
 	"./arr"
 ], function( arr ) {
+	"use strict";
+
 	return arr.indexOf;
 } );
diff --git a/src/var/pnum.js b/src/var/pnum.js
index 7fd9f6677..6f06d73b1 100644
--- a/src/var/pnum.js
+++ b/src/var/pnum.js
@@ -1,3 +1,5 @@
 define( function() {
+	"use strict";
+
 	return ( /[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/ ).source;
 } );
diff --git a/src/var/push.js b/src/var/push.js
index bca1a58ed..94656209a 100644
--- a/src/var/push.js
+++ b/src/var/push.js
@@ -1,5 +1,7 @@
 define( [
 	"./arr"
 ], function( arr ) {
+	"use strict";
+
 	return arr.push;
 } );
diff --git a/src/var/rcssNum.js b/src/var/rcssNum.js
index 408f5e26d..4214b14aa 100644
--- a/src/var/rcssNum.js
+++ b/src/var/rcssNum.js
@@ -2,6 +2,8 @@ define( [
 	"../var/pnum"
 ], function( pnum ) {
 
+"use strict";
+
 return new RegExp( "^(?:([+-])=|)(" + pnum + ")([a-z%]*)$", "i" );
 
 } );
diff --git a/src/var/rnotwhite.js b/src/var/rnotwhite.js
index 6067728ee..91bdec22f 100644
--- a/src/var/rnotwhite.js
+++ b/src/var/rnotwhite.js
@@ -1,3 +1,5 @@
 define( function() {
+	"use strict";
+
 	return ( /\S+/g );
 } );
diff --git a/src/var/slice.js b/src/var/slice.js
index d8206d30a..915f837be 100644
--- a/src/var/slice.js
+++ b/src/var/slice.js
@@ -1,5 +1,7 @@
 define( [
 	"./arr"
 ], function( arr ) {
+	"use strict";
+
 	return arr.slice;
 } );
diff --git a/src/var/support.js b/src/var/support.js
index 3db9b67bc..094d0aece 100644
--- a/src/var/support.js
+++ b/src/var/support.js
@@ -1,4 +1,5 @@
 define( function() {
+	"use strict";
 
 	// All support tests are defined in their respective modules.
 	return {};
diff --git a/src/var/toString.js b/src/var/toString.js
index 80ac7f13f..ff4ecdc72 100644
--- a/src/var/toString.js
+++ b/src/var/toString.js
@@ -1,5 +1,7 @@
 define( [
 	"./class2type"
 ], function( class2type ) {
+	"use strict";
+
 	return class2type.toString;
 } );
diff --git a/src/wrap.js b/src/wrap.js
index 69c7cbf23..88b9bb56d 100644
--- a/src/wrap.js
+++ b/src/wrap.js
@@ -5,6 +5,8 @@ define( [
 	"./traversing" // parent, contents
 ], function( jQuery ) {
 
+"use strict";
+
 jQuery.fn.extend( {
 	wrapAll: function( html ) {
 		var wrap;
diff --git a/src/wrapper.js b/src/wrapper.js
index 8866d6bcd..5f07c059a 100644
--- a/src/wrapper.js
+++ b/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`