Migrate CLI output to Logger

[victorb]

With the new files APIs, I've started on a logger that has many benefits compared to the current approach of using console.log for output.

• Intent is clear, console.log is often used to debugging, may not be clear it's actual output from CLI
• Easier to turn on/off if we want to add a --quiet flag that only outputs some things
• Abstract away the logging from the CLI itself
• Easier to build things that continues on the same line, commands that takes time to execute.

I don't think this is a urgent refactor we have to do right now, but maybe we can start thinking about it a little, and write new code with the logger, rather than migrating everything at once.

[daviddias]

👍 for having the ability to turn on/off.

Since we use debug for dev logs (log and log.err), let's call the 'logger' that prints info to the user some other thing. Maybe 'printer'?

[dignifiedquire]

printer sounds good, and the method should be called print :)

[tarunbatra]

or maybe different methods, like info, error to log messages of corresponding type.

[victorb]

@dignifiedquire agree that it should just be print, probably no need for many functions, just one called print and that would be about it.

@tarunbatra this is about printing output to the console and not logging things that can be controlled by for example log-level and such.

[daviddias]

@tarunbatra for log messages we use debug

[tarunbatra]

@diasdavid @victorbjelkholm thanx for clarifying! I was thinking otherwise.

[daviddias]

@victorbjelkholm could you finish this since you got it started? :)

[victorb]

@diasdavid I just started using it lightly. I think we shouldn't migrate everything at once but rather think about it when writing new/refactoring code (and when reviewing) so at one point, we'll be using it 100%. Does that make sense for you?

[daviddias]

Not really, it will confuse contributors and even ourselves at times as it will be always half done.

[victorb]

@diasdavid hm, ok. Will have to push this forward then, won't have any bandwidth currently to work on it...