npm i vant-weapp -S --production

<config>

{

    navigationBarTitleText: ‘WePY 2.0 Feature Demo‘,

    usingComponents: {
    
    panel: ‘~@/components/panel‘,
    
    counter: ‘~counter‘,
    
    list: ‘../components/list‘,
    
    group: ‘../components/group‘,
    
    "slide-view": "module:miniprogram-slide-view",
    
    "van-button": "module:vant-weapp/dist/button/index"
    
    }

}

</config>

<van-button type="danger">危险按钮</van-button>