fix(module:message): fix style not changed when property changes (#5323)

close #5301
NG-ZORRO · Jun 5, 2020 · 896f283 · 896f283
1 parent d1f0321
commit 896f283
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/components/message/message-container.component.ts b/components/message/message-container.component.ts
@@ -36,8 +36,9 @@ const NZ_MESSAGE_DEFAULT_CONFIG: Required<MessageConfig> = {
 })
 export class NzMessageContainerComponent extends NzMNContainerComponent {
   readonly destroy$ = new Subject<void>();
+
   instances: Array<Required<NzMessageData>> = [];
-  top: string | null = null;
+  top?: string | null;
 
   constructor(cdr: ChangeDetectorRef, nzConfigService: NzConfigService) {
     super(cdr, nzConfigService);