From cc1f1be8bd88bdd6fecb6778c51790d2e21a0051 Mon Sep 17 00:00:00 2001
From: afc163 <afc163@gmail.com>
Date: Fri, 18 Nov 2016 11:31:02 +0800
Subject: [PATCH] fix ts error

---
 components/table/filterDropdown.tsx | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/components/table/filterDropdown.tsx b/components/table/filterDropdown.tsx
index 32f5e36a6a..2c16b1e38b 100755
--- a/components/table/filterDropdown.tsx
+++ b/components/table/filterDropdown.tsx
@@ -39,16 +39,17 @@ export default class FilterMenu extends React.Component<FilterMenuProps, any> {
 
   componentWillReceiveProps(nextProps) {
     const { column } = nextProps;
-    let newState;
+    let newState: {
+      selectedKeys?: string[];
+      visible?: boolean;
+    } = {};
     if ('selectedKeys' in nextProps) {
-      newState = newState || {};
       newState.selectedKeys = nextProps.selectedKeys;
     }
     if ('filterDropdownVisible' in column) {
-      newState = newState || {};
       newState.visible = column.filterDropdownVisible;
     }
-    if (newState) {
+    if (Object.keys(newState).length > 0) {
       this.setState(newState);
     }
   }