ESLint complains if no `default` option on `switch` statements. Sometimes it's not possible. I have been trained to add it regardless. While developing, I add s

ESLint complains if no `default` option on `switch` statements. Sometimes it's not possible. I have been trained to add it regardless. While developing, I add some message like "not possible" and sure enough it hits once in a while in dev due to something I didn't consider.