create a .env file : API_URL=http://localhost:3000 (for local use)
https://docs.npmjs.com/about-semantic-versioning https://www.carlrippon.com/upgrading-npm-dependencies/
npm outdated npm update
webpack migrate to v5: https://webpack.js.org/migrate/5/ https://blog.jakoblind.no/webpack-file-loader/
react router migrate to v6: https://ankitkarnak.hashnode.dev/whats-new-in-react-router-v6-an-introductory-guide
husky https://typicode.github.io/husky/#/
init eslintrc cmd : npx eslint --init
dotenv: https://www.npmjs.com/package/dotenv-webpack https://medium.com/@ellehallal/deploying-the-weather-manager-to-heroku-3013206d1876