日志 = 新日志（“调试”）；

Question

How do I fix this?

var Log = require("log"),
  log = new Log("debug");


server.listen(port, function() {
  log.info("Listening port %s", port);
});

log.info("Listening port %s", port);

TypeError: log.info is not a function

Answer 1

var log = require("log"),

server.listen(port, function() {
  log.debug("Listening port %s", port);
});

Try it like this

Answer 2

Are you talking about this log module? See the examples. That is now how you log using this module.