Setting up Middleware

To install and configure middleware in a Redux application, we can make use of the applyMiddleware function provided by Redux. This function allows us to apply one or more middleware functions to our Redux store.

One commonly used middleware is the logger middleware, which helps us track and log information about dispatched actions and the updated state.

Here's an example of how to set up the logger middleware in a Redux store:

1const logger = store => next => action => {
2  console.log('Dispatching:', action);
3  const result = next(action);
4  console.log('New State:', store.getState());
5  return result;
6};
7
8const store = createStore(
9  rootReducer,
10  applyMiddleware(logger)
11);

In the above code, we define a logger function that takes the store, next, and action as parameters. Within this function, we can perform any logging or custom logic before and after the action is passed to the next middleware or the reducer. We then apply the logger middleware using the applyMiddleware function when creating the Redux store.

Feel free to customize the logger middleware or explore other middleware options to suit your specific application needs.

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const logger = store => next => action => {

  console.log('Dispatching:', action);

  const result = next(action);

  console.log('New State:', store.getState());

  return result;

};

​

const store = createStore(

  rootReducer,

  applyMiddleware(logger)

);