console.debug eats logging output in node 8

[divarvel]

Before node 8, console.debug did not exist, so the logger defaulted to console.log.
In node 8, console.debug exists, but does not log its arguments (I guess it can be done with an env variable or something).

It's not documented yet (https://t.co/JHrEGE3kT3), so I don't know how to tell it to display logs when CLEVER_VERBOSE is set.

[BlackYoup]

It seems like this method is not yet implemented by Node. See nodejs/node#12675

[hsablonniere]

OK so about console.debug:

• No present in 7 https://nodejs.org/docs/latest-v7.x/api/console.html
• Present but not documented in 8 https://nodejs.org/docs/latest-v8.x/api/console.html
• Present AND documented in 9 https://nodejs.org/docs/latest-v9.x/api/console.html#console_console_debug_data_args

[BlackYoup]

From the documentation, console.debug() seems to be an alias to console.log() in node 9, I'm not sure it's relevant to use it.

[divarvel]

I think we should not rely on inspecting the console object and use only console.log and console.error.

[hsablonniere]

I'm on it, I'll also refactor stuffs a bit ;-)