add all frontend files

node_modules/rc-util/es/setStyle.js

@@ -0,0 +1,26 @@
+/**
+ * Easy to set element style, return previous style
+ * IE browser compatible(IE browser doesn't merge overflow style, need to set it separately)
+ * https://github.com/ant-design/ant-design/issues/19393
+ *
+ */
+function setStyle(style) {
+  var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+  if (!style) {
+    return {};
+  }
+  var _options$element = options.element,
+    element = _options$element === void 0 ? document.body : _options$element;
+  var oldStyle = {};
+  var styleKeys = Object.keys(style);
+
+  // IE browser compatible
+  styleKeys.forEach(function (key) {
+    oldStyle[key] = element.style[key];
+  });
+  styleKeys.forEach(function (key) {
+    element.style[key] = style[key];
+  });
+  return oldStyle;
+}
+export default setStyle;