maps 三目运算解析，key 的位置错误

[zacksleo]

return this.state.list[activeIndex].type === 'trip' ?
  (
    <Navigator
      key={index}
      className="boutique_con"
      hoverclass="none"
      url="/pages/trip/view/index?id={item.id}"
    >
    <View>1</View>
    </Navigator>
  ) : (
    <Navigator
      key={item.id}
      className="boutique_con"
      hoverclassName="none"
      url="/pages/visa/view/index?id={item.id}"
    >
    <View>2</View>
    </Navigator>
  );

解析后，key 出现在了子元素中

<block wx:for="{{list[activeIndex].list}}" wx:for-item="item" wx:for-index="index">
    <block wx:if="{{list[activeIndex].type === 'trip'}}">
        <navigator wx:key="{{index}}" class="boutique_con" hoverclass="none" url="/pages/trip/view/index?id={item.id}">
            <view>1</view>
        </navigator>
    </block>
    <block wx:else>
        <navigator wx:key="{{item.id}}" class="boutique_con" hoverclass-name="none"
        url="/pages/visa/view/index?id={item.id}">
            <view>2</view>
        </navigator>
    </block>
</block>