How do I implement middleware in a React-Redux app using TypeScript?

How do I implement middleware in a React-Redux app using TypeScript?

To implement middleware in a React-Redux app with TypeScript, you can use the applyMiddleware function from Redux. First, install Redux and React-Redux if you haven't already.

What are some common middleware I can use?

Common middleware includes Redux Thunk for async actions, Redux Logger for logging actions, and Redux Saga for managing side effects.

Can you show me a simple example of using Redux Thunk?

Sure! First, install Redux Thunk. Then, create an async action like this:

const fetchData = () => async (dispatch: Dispatch) => {
  const response = await fetch('https://api.example.com/data');
  const data = await response.json();
  dispatch({ type: 'FETCH_DATA_SUCCESS', payload: data });
};

How do I type my actions and state in TypeScript?

You can define action types and interfaces for your state. For example:

interface FetchDataAction {
  type: 'FETCH_DATA_SUCCESS';
  payload: DataType;
}

type Action = FetchDataAction;

interface State {
  data: DataType[];
}