Merge branch 'test' into fix-issues

@@ -245,7 +245,7 @@ export function debounce(func, wait, immediate) {
   return function (...args) {
     context = this;
     timestamp = +new Date();
-    data = args;
+    data = args; // 把实参作为防抖回调函数的返回值
     const callNow = immediate && !timeout;
     // 如果延时不存在，重新设定延时
     if (!timeout) timeout = setTimeout(later, wait);