[improvement] update eslint rules (#2089)

packages/panel/demo/index.vue

@@ -1,17 +1,30 @@
 <template>
   <demo-section>
     <demo-block :title="$t('basicUsage')">
-      <van-panel :title="$t('title')" :desc="$t('desc')" :status="$t('status')">
+      <van-panel
+        :title="$t('title')"
+        :desc="$t('desc')"
+        :status="$t('status')"
+      >
         <div>{{ $t('content') }}</div>
       </van-panel>
     </demo-block>
 
     <demo-block :title="$t('advancedUsage')">
-      <van-panel :title="$t('title')" :desc="$t('desc')" :status="$t('status')">
+      <van-panel
+        :title="$t('title')"
+        :desc="$t('desc')"
+        :status="$t('status')"
+      >
         <div>{{ $t('content') }}</div>
         <div slot="footer">
           <van-button size="small">{{ $t('button') }}</van-button>
-          <van-button size="small" type="danger">{{ $t('button') }}</van-button>
+          <van-button
+            size="small"
+            type="danger"
+          >
+            {{ $t('button') }}
+          </van-button>
         </div>
       </van-panel>
     </demo-block>

packages/panel/index.vue

@@ -12,7 +12,11 @@
     <div :class="b('content')">
       <slot />
     </div>
-    <div v-if="$slots.footer" :class="b('footer')" class="van-hairline--top">
+    <div
+      v-if="$slots.footer"
+      :class="b('footer')"
+      class="van-hairline--top"
+    >
       <slot name="footer" />
     </div>
   </cell-group>

packages/panel/test/__snapshots__/demo.spec.js.snap

@@ -34,7 +34,9 @@ exports[`renders demo correctly 1`] = `
       <div class="van-hairline--top van-panel__footer">
         <div>
           <button class="van-button van-button--default van-button--small"><span class="van-button__text">按钮</span></button>
-          <button class="van-button van-button--danger van-button--small"><span class="van-button__text">按钮</span></button>
+          <button class="van-button van-button--danger van-button--small"><span class="van-button__text">
+          按钮
+        </span></button>
         </div>
       </div>
     </div>