nsgk_wechat/pages/user/region/region.json

{
  "usingComponents": {
    "van-index-bar": "@vant/weapp/index-bar/index",
    "van-index-anchor": "@vant/weapp/index-anchor/index",
    "van-collapse": "@vant/weapp/collapse/index",
    "van-collapse-item": "@vant/weapp/collapse-item/index"
  }
}