Applet/unpackage/dist/dev/mp-weixin/components/popup.json

{
  "component": true,
  "usingComponents": {
    "uni-popup": "/uni_modules/uni-popup/components/uni-popup/uni-popup",
    "uni-popup-dialog": "/uni_modules/uni-popup/components/uni-popup-dialog/uni-popup-dialog"
  }
}