// simple redux middleware that executes// the `effect` field if provided in an action// since this is preceded by the `plugins`// middleware, it allows authors to interrumpt,// defer or add to existing side effects at will// as the result of an action being triggeredexport default (store) => (next) => (action) => {const ret = next(action);if (action.effect) {action.effect();delete action.effect;}return ret;};