module Roda::RodaPlugins::CommonLogger

def self.configure(app, logger=nil, opts=OPTS)
  app.opts[:common_logger] = logger || app.opts[:common_logger] || $stderr
  app.opts[:common_logger_meth] = app.opts[:common_logger].method(opts.fetch(:method){logger.respond_to?(:write) ? :write : :<<})
end