diff --git a/src/core/view/plugins/wxs/component-descriptor.js b/src/core/view/plugins/wxs/component-descriptor.js
index 0a2edbb19bffe02167b8a4fbe0f6062260475f62..e261e0ff30c40518f036ddc5b8d0671bcfceeff4 100644
--- a/src/core/view/plugins/wxs/component-descriptor.js
+++ b/src/core/view/plugins/wxs/component-descriptor.js
@@ -161,12 +161,12 @@ class ComponentDescriptor {
     return (this.$vm.$emit(eventName, detail), this)
   }
 
-  setTimeout (handler: TimerHandler, timeout ? : number) {
+  setTimeout (handler, timeout) {
     return window.setTimeout(handler, timeout)
   }
 
-  clearTimeout (handle ? : number) {
-    return window.clearTimeout(handle)
+  clearTimeout (handler) {
+    return window.clearTimeout(handler)
   }
 
   getBoundingClientRect () {