diff --git a/shared/components/Portal/defaultEventEmitter.tsx b/shared/components/Portal/defaultEventEmitter.tsx
index b5983114..9585e4eb 100644
--- a/shared/components/Portal/defaultEventEmitter.tsx
+++ b/shared/components/Portal/defaultEventEmitter.tsx
@@ -1,6 +1,6 @@
 export class DefaultEventEmitter {
   // 参考: https://developer.mozilla.org/zh-CN/docs/Web/API/EventTarget
-  listeners = {};
+  listeners: any = {};
 
   emit(type: string, ...args: any[]) {
     if (!(type in this.listeners)) {
@@ -25,7 +25,7 @@ export class DefaultEventEmitter {
     this.listeners[type].push(callback);
   }
 
-  removeListener(type: string, callback: (...args: any[]) => any) {
+  removeListener(type: string, callback: (...args: any[]) => any): any {
     if (!(type in this.listeners)) {
       return;
     }