babel-preset-react-app uses the "@babel/plugin-proposal-private-property-in-object" package without explicitly listing it as a dependency

Question

My problem is that I tried to create a new react project and after having a lot of bug issues I managed to solve some of them, one of the main instructions was to add this line:

"overrides": {
    "@svgr/webpack": "$@svgr/webpack"
  },

Go into my package.json file. Once done I had to delete my node_modules folder and reuse npm install and now I get babel error after typing npm start.

One of your dependencies, babel-preset-react-app, is importing the
"@babel/plugin-proposal-private-property-in-object" package without
declaring it in its dependencies. This is currently working because
"@babel/plugin-proposal-private-property-in-object" is already in your
node_modules folder for unrelated reasons, but it may break at any time.

babel-preset-react-app is part of the create-react-app project, which
is not maintianed anymore. It is thus unlikely that this bug will
ever be fixed. Add "@babel/plugin-proposal-private-property-in-object" to
your devDependencies to work around this error. This will make this message
go away.

I tried searching the internet for solutions but I found only one that told me to add this plugin to my devDependency but that didn't work and I also found one that told me to enter CI= npm run build doesn't work either.

This is what I encountered when typing npm list @babel/plugin-proposal-private-property-in-object:

npm ERR! code ELSPROBLEMS
npm ERR! invalid: @babel/plugin-proposal-private-property-in-object@7.21.0-placeholder-for-preset-env.2 C:UsersOmri-PCDesktopKeeperAppnode_modules@babelplugin-proposal-private-property-in-object
keeper-app-part-1-starting@1.0.0 C:UsersOmri-PCDesktopKeeperApp
├── @babel/plugin-proposal-private-property-in-object@7.21.0-placeholder-for-preset-env.2 invalid: "^x.x.x" from the root project
└─┬ @svgr/webpack@8.0.1 overridden
  └─┬ @babel/preset-env@7.22.5
    └── @babel/plugin-proposal-private-property-in-object@7.21.0-placeholder-for-preset-env.2 deduped invalid: "^x.x.x" from the root project

This is what my package.json file looks like (if it helps understanding somehow):

{
  "name": "keeper-app-part-1-starting",
  "version": "1.0.0",
  "description": "",
  "keywords": [],
  "main": "src/index.js",
  "dependencies": {
    "react": "18.2.0",
    "react-dom": "18.2.0"
  },
  "devDependencies": {
    "@svgr/webpack": "^8.0.1",
    "react-scripts": "5.0.1",
    "typescript": "5.1.3"
  },
  "overrides": {
    "@svgr/webpack": "$@svgr/webpack"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test --env=jsdom",
    "eject": "react-scripts eject"
  },
  "browserslist": [
    ">0.2%",
    "not dead",
    "not ie <= 11",
    "not op_mini all"
  ]
}

Hope I gave you enough information to help me solve this problem, thank you very much!

Answer 1

Running the following command solved my problem

npm install --save-dev @babel/plugin-proposal-private-property-in-object

Use --save-dev to install it under devDependencies