Pull request #1894: 无JIRA任务 完善描述

Merge in VISUAL/fineui from ~TELLER/fineui:master to master

* commit 'e62d3736485a0acbb35f44ce78e2e0020abea7d5':
  refactor: 完善描述

typescript/core/widget.ts

@@ -484,6 +484,11 @@ export declare class Widget extends OB {
      */
     beforeInit?(cb: Function): void;
 
+    /**
+     * 渲染前
+     */
+    beforeRender?(cb: Function): void;
+
     /**
      * 创建前
      */