enhancedReduxThunk.js

import Raven from 'raven-js'

// Custom Redux-Thunk that catches errors
function createThunkMiddleware(extraArgument) {
	return ({ dispatch, getState }) => next => action =>
	{
		if (typeof action === 'function')
		{
			const result = action(dispatch, getState, extraArgument);

			// If the function returns a promise (async function usually), then
			// catch the error manually and report to Raven.
			if (result && result.catch && typeof(result.catch) === 'function')
			{
				return result.catch((error) =>
				{
					console.error(error);
					Raven.captureException(error);
				});
			}
			return result;
		}

		return next(action);
	}
}

const enhancedReduxThunk = createThunkMiddleware();
enhancedReduxThunk.withExtraArgument = createThunkMiddleware;

export default enhancedReduxThunk;