chore: prettier source code

src/coupon-list/index.js

@@ -181,7 +181,7 @@ export default createComponent({
       </div>
     );
 
-    const onChange = index => () => this.$emit('change', index);
+    const onChange = (index) => () => this.$emit('change', index);
 
     const CouponTab = (
       <Tab title={title}>
@@ -210,7 +210,7 @@ export default createComponent({
           class={bem('list', { 'with-bottom': this.showCloseButton })}
           style={this.listStyle}
         >
-          {disabledCoupons.map(coupon => (
+          {disabledCoupons.map((coupon) => (
             <Coupon
               disabled
               key={coupon.id}

src/coupon-list/test/index.spec.js

@@ -105,10 +105,7 @@ test('render empty coupon list', () => {
       disabledCoupons: [],
     },
   });
-  wrapper
-    .findAll('.van-tab')
-    .at(1)
-    .trigger('click');
+  wrapper.findAll('.van-tab').at(1).trigger('click');
   expect(wrapper).toMatchSnapshot();
 });