--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/default/node_modules/shoestring/src/dom/css/getStyle.js	Sat May 31 09:21:51 2025 +0800
@@ -0,0 +1,72 @@
+//>>excludeStart("exclude", pragmas.exclude);
+define([
+	"shoestring",
+	"dom/css/exceptions",
+], function(){
+//>>excludeEnd("exclude");
+
+	(function() {
+		var cssExceptions = shoestring.cssExceptions;
+
+		// marginRight instead of margin-right
+		function convertPropertyName( str ) {
+			return str.replace( /\-([A-Za-z])/g, function ( match, character ) {
+				return character.toUpperCase();
+			});
+		}
+
+		function _getStyle( element, property ) {
+			return win.getComputedStyle( element, null ).getPropertyValue( property );
+		}
+
+		var vendorPrefixes = [ '', '-webkit-', '-ms-', '-moz-', '-o-', '-khtml-' ];
+
+		/**
+		 * Private function for getting the computed style of an element.
+		 *
+		 * **NOTE** Please use the [css](../css.js.html) method instead.
+		 *
+		 * @method _getStyle
+		 * @param {HTMLElement} element The element we want the style property for.
+		 * @param {string} property The css property we want the style for.
+		 */
+		shoestring._getStyle = function( element, property ) {
+			var convert, value, j, k;
+
+			if( cssExceptions[ property ] ) {
+				for( j = 0, k = cssExceptions[ property ].length; j < k; j++ ) {
+					value = _getStyle( element, cssExceptions[ property ][ j ] );
+
+					if( value ) {
+						return value;
+					}
+				}
+			}
+
+			for( j = 0, k = vendorPrefixes.length; j < k; j++ ) {
+				convert = convertPropertyName( vendorPrefixes[ j ] + property );
+
+				// VendorprefixKeyName || key-name
+				value = _getStyle( element, convert );
+
+				if( convert !== property ) {
+					value = value || _getStyle( element, property );
+				}
+
+				if( vendorPrefixes[ j ] ) {
+					// -vendorprefix-key-name
+					value = value || _getStyle( element, vendorPrefixes[ j ] + property );
+				}
+
+				if( value ) {
+					return value;
+				}
+			}
+
+			return undefined;
+		};
+	})();
+
+//>>excludeStart("exclude", pragmas.exclude);
+});
+//>>excludeEnd("exclude");