add all frontend files

node_modules/rc-util/lib/Dom/styleChecker.js

@@ -0,0 +1,33 @@
+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault").default;
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+exports.isStyleSupport = isStyleSupport;
+var _canUseDom = _interopRequireDefault(require("./canUseDom"));
+var isStyleNameSupport = function isStyleNameSupport(styleName) {
+  if ((0, _canUseDom.default)() && window.document.documentElement) {
+    var styleNameList = Array.isArray(styleName) ? styleName : [styleName];
+    var documentElement = window.document.documentElement;
+    return styleNameList.some(function (name) {
+      return name in documentElement.style;
+    });
+  }
+  return false;
+};
+var isStyleValueSupport = function isStyleValueSupport(styleName, value) {
+  if (!isStyleNameSupport(styleName)) {
+    return false;
+  }
+  var ele = document.createElement('div');
+  var origin = ele.style[styleName];
+  ele.style[styleName] = value;
+  return ele.style[styleName] !== origin;
+};
+function isStyleSupport(styleName, styleValue) {
+  if (!Array.isArray(styleName) && styleValue !== undefined) {
+    return isStyleValueSupport(styleName, styleValue);
+  }
+  return isStyleNameSupport(styleName);
+}