Redux Login Action snippet

login.js

// @ redux/actions/login.js
export function loginStart(username, pw): Promise<void> {
  return async (dispatch) => {
    dispatch({ type: 'LOGIN_START' })
    try {
      const userData = await login(username, pw)
      dispatch(loginSuccess(userData))
    } catch (error) {
      dispatch(loginFailure(error))
    }
  }
}

export function loginSuccess(userData): Action {
  return { type: 'LOGIN_SUCCESS', userData }
}

export function loginFailure(error): Action {
  return { type: 'LOGIN_FAILURE', error }
}