Comment by ajstacy06
Also, on the topic of timestamps, some of the formatters do have them on by default. The pretty formatter which is mostly for dev does not because its not as necessary. I hope that helps explain that decision :)
As for emoji's, they are off by default and are really only for dev with the pretty logger. You are right in that you probably would not want them in production. You would probably use a different formatter like "standard" or "json" anyway which doesn't allow them.
That makes sense! This is obviously just my preference, but in both cases I would prefer this to be a config option, so I could control it e.g. by an environment variable. Local dev? Probably don't care about timestamps and probably would enjoy emojis. Production? Absolutely need timestamps and probably don't want emojis. I realize this is a significant API change, but just wanted to share my thoughts.