Reporting Unknown Actions with Analytics

Capture unknown actions and report them to an analytics service for further inspection, which helps in debugging and maintaining the Redux application.
// Middleware function to catch unknown actions
const unknownActionReporter = store => next => action => {
    // Let the action pass through

    // Verify if the action type is unknown
    if (action.type === 'UNKNOWN_ACTION') {
        // Prepare the data to be sent to analytics
        const analyticsData = {
            timestamp: new Date().toISOString(),
            action: action

        // Report the unknown action to the analytics server
        fetch('', {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json'
            body: JSON.stringify(analyticsData)
        .then(response => response.json())
        .then(data => console.log('Unknown action reported:', data))
        .catch(error => console.error('Error reporting unknown action:', error));

// Usage in a Redux store setup
// import { createStore, applyMiddleware } from 'redux';
// const store = createStore(
//     rootReducer,
//     applyMiddleware(unknownActionReporter)
// );
Defines a Redux middleware function `unknownActionReporter` to capture actions with type 'UNKNOWN_ACTION' and reports them to an analytics endpoint. It should be applied during the Redux store configuration.