Redux Middleware that tracks a history of dispatched actions for debugging.

redux-error-log-middleware.js

const redux_log = [];

const errorLogMiddleware = (store) => (next) => (action) => {
	const type = (action && action.type) || 'unknown action';

	if ( type === 'LOG_ERROR' ) {
		const log_str = redux_log.join(' -> ');
		const error_str = (action && action.payload && action.payload.error) || 'Redux Error';
		console.error(error_str + ': ' + log_str);
	} else {
			// add last action to log
			redux_log.push(type);
			if (redux_log.length > 10) {
				redux_log.shift();
			}
	}

	return next(action);
};