新增ref检测

packages/rax-render/src/engine/base.jsx

@@ -346,7 +346,7 @@ export default class BaseEngine extends Component {
       engine.createElement(
       Comp,
         props,
-      (!isFileSchema(schema)
+      (!isFileSchema(schema) &&
           !!schema.children &&
           this.__createVirtualDom(
             isJSExpression(schema.children) ? parseExpression(schema.children, self) : schema.children,

packages/rax-render/src/utils/index.js

@@ -268,9 +268,7 @@ export function generateI18n(locale = 'zh-CN', messages = {}) {
  * @param {*} Comp 需要判断的组件
  */
 export function acceptsRef(Comp) {
-  return (
-    (Comp.$$typeof && Comp.$$typeof === REACT_FORWARD_REF_TYPE) || (Comp.prototype && Comp.prototype.isReactComponent)
-  );
+  return Comp && Comp.prototype && Comp.prototype.setState;
 }
 
 /**