How to get console.log line numbers shown in Nodejs?

Question

Got an old application, that prints out quite a lot of messages using console.log, but I just can not find in which files and lines console.log is

Answer 1

For a temporary hack to find the log statements that you want to get rid of, it's not too difficult to override console.log yourself.

var log = console.log;
console.log = function() {
    log.apply(console, arguments);
    // Print the stack trace
    console.trace();
};


// Somewhere else...
function foo(){
    console.log('Foobar');
}
foo();

That will print something like

Foobar
Trace
at Console.console.log (index.js:4:13)
at foo (index.js:10:13)
at Object. (index.js:12:1)
...

A lot of noise in there but the second line in the call stack, at foo (index.js:10:13), should point you to the right place.