nl_tokens: We are creating one generic version of logger .
pl_tokens: function _log ( <mask> ) { return function ( ) { var meta = null ; var args = arguments ; if ( arguments . length === 0 ) { // we only check here current level, but we also should more but restify uses it only for trace checks return this . _winston . level === level ; } else if ( arguments [ 0 ] instanceof Error ) { // winston supports Error in meta, so pass it as last meta = arguments [ 0 ] . toString ( ) ; args = Array . prototype . slice . call ( arguments , 1 ) ; args . push ( meta ) ; } else if ( typeof ( args [ 0 ] ) === 'string' ) { // just arrayize for level args = Array . prototype . slice . call ( arguments ) ; } else { // push provided object as meta meta = arguments [ 0 ] ; args = Array . prototype . slice . call ( arguments , 1 ) ; args . push ( meta ) ; } args . unshift ( level ) ; this . _winston . log . apply ( this . _winston , args ) ; } }