fix: Drawer swipe event throw error

afc163 · afc163 · commit 8af7caf479bd · 2021-11-17T15:05:38.000+08:00
close ant-design/ant-design#32904
diff --git a/src/DrawerChild.tsx b/src/DrawerChild.tsx
@@ -167,7 +167,7 @@ class DrawerChild extends React.Component<IDrawerChildProps, IState> {
   };
 
   private removeMoveHandler = (e: React.TouchEvent | TouchEvent) => {
-    if (e.changedTouches.length > 1) {
+    if (e.changedTouches.length > 1 || !this.startPos) {
       return;
     }
     const currentTarget = e.currentTarget as HTMLElement;

Original file line number	Diff line number	Diff line change
`@@ -167,7 +167,7 @@ class DrawerChild extends React.Component<IDrawerChildProps, IState> {`
`167`	`167`	`};`
`168`	`168`
`169`	`169`	`private removeMoveHandler = (e: React.TouchEvent \| TouchEvent) => {`
`170`		`- if (e.changedTouches.length > 1) {`
	`170`	`+ if (e.changedTouches.length > 1 \|\| !this.startPos) {`
`171`	`171`	`return;`
`172`	`172`	`}`
`173`	`173`	`const currentTarget = e.currentTarget as HTMLElement;`