expensify

A very common and simple React application to manage expenses to use more advanced features of React such as authentication, routing, testing and deploying.

https://cancan-react-expensify-app.herokuapp.com/

dev tools

For react, I simply use Chrome React Developer Tools extension.
For Redux, I use https://github.com/zalmoxisus/redux-devtools-extension

env files

You can always check .env.example file to see which env variables you need.

Create env files in root directory or modify your scripts to run them properly.
Create .env.test file to setup env variables for tests.
Create .env.development file to setup env variables for development server and database.