Build: Add the ability to remove global exposure.

Ref #14016

README.md

@@ -84,6 +84,7 @@ Some example modules that can be excluded are:
 - **offset**: The `.offset()`, `.position()`, `.offsetParent()`, `.scrollLeft()`, and `.scrollTop()` methods.
 - **wrap**: The `.wrap()`, `.wrapAll()`, `.wrapInner()`, and `.unwrap()` methods.
 - **exports/amd**: Exclude the AMD definition.
+- **exports/global**: Exclude the attachment of global jQuery variables ($ and jQuery) to the window.
 - **core/ready**: Exclude the ready module if you place your scripts at the end of the body. Any ready callbacks bound with `jQuery()` will simply be called immediately. However, `jQuery(document).ready()` will not be a function and `.on("ready", ...)` or similar will not be triggered.
 - **deferred**: Exclude jQuery.Deferred. This also removes jQuery.Callbacks. *Note* that modules that depend on jQuery.Deferred(AJAX, effects, core/ready) will not be removed and will still expect jQuery.Deferred to be there. Include your own jQuery.Deferred implementation or exclude those modules as well (`grunt custom:-deferred,-ajax,-effects,-core/ready`).
 

build/tasks/build.js

@@ -196,6 +196,13 @@ module.exports = function( grunt ) {
 			excluded.splice( index, 1 );
 		}
 
+		// Replace exports/global with a noop noConflict
+		if ( (index = excluded.indexOf( "exports/global" )) > -1 ) {
+			config.rawText[ "exports/global" ] = "define(['../core']," +
+				"function( jQuery ) {\njQuery.noConflict = function() {};\n});";
+			excluded.splice( index, 1 );
+		}
+
 		grunt.verbose.writeflags( excluded, "Excluded" );
 		grunt.verbose.writeflags( included, "Included" );
 

src/core.js

@@ -15,12 +15,6 @@ var
 	// Use the correct document accordingly with window argument (sandbox)
 	document = window.document,
 
-	// Map over jQuery in case of overwrite
-	_jQuery = window.jQuery,
-
-	// Map over the $ in case of overwrite
-	_$ = window.$,
-
 	version = "@VERSION",
 
 	// Define a local copy of jQuery
@@ -202,18 +196,6 @@ jQuery.extend({
 
 	noop: function() {},
 
-	noConflict: function( deep ) {
-		if ( window.$ === jQuery ) {
-			window.$ = _$;
-		}
-
-		if ( deep && window.jQuery === jQuery ) {
-			window.jQuery = _jQuery;
-		}
-
-		return jQuery;
-	},
-
 	// See test/unit/core.js for details concerning isFunction.
 	// Since version 1.3, DOM methods and functions like alert
 	// aren't supported. They return false on IE (#2968).

src/exports/global.js

@@ -0,0 +1,29 @@
+define([
+	"../core"
+], function( jQuery ) {
+
+var
+	// Map over jQuery in case of overwrite
+	_jQuery = window.jQuery,
+
+	// Map over the $ in case of overwrite
+	_$ = window.$;
+
+jQuery.noConflict = function( deep ) {
+	if ( window.$ === jQuery ) {
+		window.$ = _$;
+	}
+
+	if ( deep && window.jQuery === jQuery ) {
+		window.jQuery = _jQuery;
+	}
+
+	return jQuery;
+};
+
+// Expose jQuery and $ identifiers, even in
+// AMD (#7102#comment:10, https://github.com/jquery/jquery/pull/557)
+// and CommonJS for browser emulators (#13566)
+window.jQuery = window.$ = jQuery;
+
+});

src/jquery.js

@@ -27,12 +27,10 @@ define([
 	"./offset",
 	"./dimensions",
 	"./deprecated",
-	"./exports/amd"
+	"./exports/amd",
+	"./exports/global"
 ], function( jQuery ) {
 
-// Expose jQuery and $ identifiers, even in
-// AMD (#7102#comment:10, https://github.com/jquery/jquery/pull/557)
-// and CommonJS for browser emulators (#13566)
-return (window.jQuery = window.$ = jQuery);
+return jQuery;
 
 });