res.headersSent when availablesafe-buffer for improved Buffer APIBuffer loadingDEBUG_MAX_ARRAY_LENGTHDEBUG_FD set to 1 or 2undefined argument to token functionsDEBUG_FD environment variabledigits argument to response-time tokenmorgan.compile(format) exportdev formatresponse-time token to not include response latencystatus token incorrectly displaying before response in dev formatundefined or a stringreq and res tokensres.getHeader in res tokenCONNECT requestsUpgrade requestsdev formatskip optionisFinished(req) when data bufferedclf for the common log formatiso for the common ISO 8601 date time formatweb for the common RFC 1123 date time formatbuffer optioncommon and combined formats"debug messagesreq.ip integration when immediate: falsebytes dependencyformat is not a function or stringError.stackTraceLimit is too low:remote-user tokencombined log formatcommon log formatmorgan(format, options) function signaturedefault format -- use combined format insteaddev format:response-time token is now empty when immediate used:response-time token is now monotonic:response-time token has precision to 1 μs:status + immediate output in node.js 0.8buffer option to prevent indefinite event loop holding