并不能直接引用的。先在项目目录下npm init -y 然后 npm i 模块 然后勾选面板中的使用NPM模块，最后构建npm。引用时路径如下

"usingComponents": {
    "van-action-sheet": "/miniprogram_npm/[@vant](/user/vant)/weapp/action-sheet/index",
    "van-search": "/miniprogram_npm/[@vant](/user/vant)/weapp/search/index",
    "van-sticky": "/miniprogram_npm/[@vant](/user/vant)/weapp/sticky/index"
},