Using Redux DevTools

We have successfully set up Redux DevTools and webpack hot reloading. We can now run the app in production mode via npm start and in development mode via npm run start:dev:

• In development mode (npm run start:dev):
  • We can use Redux DevTools to debug our Redux application's state and actions.
  • Whenever we make a code change in a component, webpack will recompile and replace the code for that component (hot reloading). This happens automatically, without a refresh, whenever you save a file in the src/ directory.
  • Hot reloading also works for reducers. In this case, the state is recomputed automatically, without a refresh.
  • We can store state in debug sessions by adding ?debug=SESSION_NAME to the URL.
• In production mode (npm start):
  • We have the same app, without Redux DevTools and hot reloading.
  • We build the app first, then serve the static files with a simple web server. As a result, the application will load much faster.

We will now go over some Redux DevTools monitors and explain...