1. Run `yarn init`
1. Create **src/app.js**
1. Updated **main** in **package.json**
1. Run `yarn add nodemon -D`
1. Run `yarn add babel-cli babel-preset-env -D`
1. Create **.babelrc**
1. Setup **scripts** in **package.json**
1. Run `yarn add eslint babel-eslint prettier eslint-plugin-prettier eslint-config-prettier -D`
1. Create **.eslint.js** file
1. Create **.prettierrc.js** file
{
"presets": ["babel-preset-env"]
}
If you want to use .env files
1. Run `yarn add dotenv`
1. Create **.env** file
1. Import **dotenv** in files that need it
```
import dotenv from 'dotenv'
dotenv.config()
```