# Code-style - methods that return a promise should always use async/await otherwise synchronous errors can get swallowed you can return a promise without awaiting it though. - only named exports, no default exports otherwise it becomes hard to remember what was a default/named export - should we return promises from storage mutation calls? probably not, as we don't await them anywhere. only read calls should return promises? - we don't anymore - don't use these features, as they are not widely enough supported. - [lookbehind in regular expressions](https://caniuse.com/js-regexp-lookbehind)