From ca0c05a75ff61c867bc19378101f44ecb5822683 Mon Sep 17 00:00:00 2001
From: Wendell <wendzhue@gmail.com>
Date: Mon, 21 Jan 2019 11:27:33 +0800
Subject: [PATCH] fix: ci

---
 components/tooltip/nz-tooltip.component.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/components/tooltip/nz-tooltip.component.ts b/components/tooltip/nz-tooltip.component.ts
index 903d02d890e..87e7a0787d6 100644
--- a/components/tooltip/nz-tooltip.component.ts
+++ b/components/tooltip/nz-tooltip.component.ts
@@ -89,7 +89,7 @@ export class NzToolTipComponent implements OnChanges {
 
   constructor(public cdr: ChangeDetectorRef) {}
 
-  ngOnChanges() {
+  ngOnChanges(): void {
     Promise.resolve().then(() => {
       this.updatePosition();
     });