verdaccio/wiki/logger.md

Logger

As any web application, verdaccio has a customisable built-in logger. You can define multiple types of outputs.

logs:
  # console output
  - {type: stdout, format: pretty, level: http}
  # file output
  - {type: file, path: verdaccio.log, level: info}

Configuration

Property	Type	Required	Example	Support	Description
type	string	No	[stdout, file]	all	define the output
path	string	No	verdaccio.log	all	if type is file, define the location of that file
format	string	No	[pretty, pretty-timestamped]	all	output format
level	string	No	[fatal, error, warn, http, info, debug, trace]	all	verbose level