react项目中报错，'xxx' cannot be used as a valid JXS element. Type 'xxxx' is not assignable to type '@types/react/index'. ReactNode Type '{}' is not assignable to type 'ReactNode'.

报错信息'xxx' cannot be used as a valid JXS element.  Type '' is not assignable to type  '@types/react/index'.ReactNode Type {} is not assignable to type 'ReactNode'

解决：package.json 加入如下代码：

"resolutions": {
    "@types/react": "17.0.2",
    "@types/react-dom": "17.0.2"
  }

删除node_modules、package-lack.json、yarn.lock，然后重新安装