From 9e9f0e3d4dcc61d7887f48f1f3099a4b6d029124 Mon Sep 17 00:00:00 2001
From: chenjiahan <chenjiahan@youzan.com>
Date: Tue, 6 Oct 2020 16:41:02 +0800
Subject: [PATCH] types: improve useTouch typing

---
 src/composition/use-touch.ts | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/composition/use-touch.ts b/src/composition/use-touch.ts
index a4a65a2df..7becdd053 100644
--- a/src/composition/use-touch.ts
+++ b/src/composition/use-touch.ts
@@ -2,15 +2,15 @@ import { ref } from 'vue';
 
 const MIN_DISTANCE = 10;
 
+type Direction = '' | 'vertical' | 'horizontal';
+
 function getDirection(x: number, y: number) {
   if (x > y && x > MIN_DISTANCE) {
     return 'horizontal';
   }
-
   if (y > x && y > MIN_DISTANCE) {
     return 'vertical';
   }
-
   return '';
 }
 
@@ -21,7 +21,7 @@ export function useTouch() {
   const deltaY = ref(0);
   const offsetX = ref(0);
   const offsetY = ref(0);
-  const direction = ref('');
+  const direction = ref<Direction>('');
 
   const isVertical = () => direction.value === 'vertical';
   const isHorizontal = () => direction.value === 'horizontal';