Log errors and debug info to file

[brandoningli]

Is your feature request related to a problem? Please describe.

Errors can be hard to track down in the terminal output.

Describe the solution you'd like

Log errors and other debug info to a file for easy future inspection.

Describe alternatives you've considered

Additional context

[brandoningli]

We can either try overriding console or making our own logger and replace all instances.

[brandoningli]

• Ensure log files are rotated to prevent them from growing to large sizes
• Ensure that we can get to errors before they're rotated away due to debug messages. This may mean logging just the errors to another file even if you include both debug and error in one file as well.

[brandoningli]

I'd highly recommend looking into an existing nodejs library for logging. Should give us more granular control over logging levels, rotating log files, log to a file and the console at the same time (maybe colorized), and potentially give us the option to log to something like a Graylog server in the future easily. The winston library looks like it could be a winner. See also this article that talks about Winston, but ignore the parts specific to adding Loggly logging handlers.

• winston-discord-transport
• winston-daily-rotate-file (Can log to rotating file, by date or size)

[brandoningli]

Adding some information about winston and the log level guidelines to a wiki page.