--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/default/node_modules/shoestring/src/dom/addClass.js	Sat May 31 09:21:51 2025 +0800
@@ -0,0 +1,28 @@
+//>>excludeStart("exclude", pragmas.exclude);
+define([ "shoestring" ], function(){
+//>>excludeEnd("exclude");
+
+	/**
+	 * Add a class to each DOM element in the set of elements.
+	 *
+	 * @param {string} className The name of the class to be added.
+	 * @return shoestring
+	 * @this shoestring
+	 */
+	shoestring.fn.addClass = function( className ){
+		var classes = className.replace(/^\s+|\s+$/g, '').split( " " );
+
+		return this.each(function(){
+			for( var i = 0, il = classes.length; i < il; i++ ){
+				if( this.className !== undefined &&
+						(this.className === "" ||
+						!this.className.match( new RegExp( "(^|\\s)" + classes[ i ] + "($|\\s)"))) ){
+					this.className += " " + classes[ i ];
+				}
+			}
+		});
+	};
+
+//>>excludeStart("exclude", pragmas.exclude);
+});
+//>>excludeEnd("exclude");