--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/default/node_modules/shoestring/src/dom/index.js	Sat May 31 09:21:51 2025 +0800
@@ -0,0 +1,64 @@
+//>>excludeStart("exclude", pragmas.exclude);
+define([ "shoestring" ], function(){
+//>>excludeEnd("exclude");
+
+	(function() {
+		function _getIndex( set, test ) {
+			var i, result, element;
+
+			for( i = result = 0; i < set.length; i++ ) {
+				element = set.item ? set.item(i) : set[i];
+
+				if( test(element) ){
+					return result;
+				}
+
+				// ignore text nodes, etc
+				// NOTE may need to be more permissive
+				if( element.nodeType === 1 ){
+					result++;
+				}
+			}
+
+			return -1;
+		}
+
+		/**
+		 * Find the index in the current set for the passed selector.
+		 * Without a selector it returns the index of the first node within the array of its siblings.
+		 *
+		 * @param {string|undefined} selector The selector used to search for the index.
+		 * @return {integer}
+		 * @this {shoestring}
+		 */
+		shoestring.fn.index = function( selector ){
+			var self, children;
+
+			self = this;
+
+			// no arg? check the children, otherwise check each element that matches
+			if( selector === undefined ){
+				children = ( ( this[ 0 ] && this[0].parentNode ) || doc.documentElement).childNodes;
+
+				// check if the element matches the first of the set
+				return _getIndex(children, function( element ) {
+					return self[0] === element;
+				});
+			} else {
+//>>includeStart("development", pragmas.development);
+				if( selector.constructor === shoestring.Shoestring ) {
+					shoestring.error( "index-shoestring-object" );
+				}
+//>>includeEnd("development");
+
+				// check if the element matches the first selected node from the parent
+				return _getIndex(self, function( element ) {
+					return element === (shoestring( selector, element.parentNode )[ 0 ]);
+				});
+			}
+		};
+	})();
+
+//>>excludeStart("exclude", pragmas.exclude);
+});
+//>>excludeEnd("exclude");