Nodejs: get filename of caller function

Question

I wonder how-to get an absolute path of a caller of a function?

Let say that:

in file a.js I call b(); b() is a functi

Answer 1

This is an example how to use stacktrace to find caller file in node

function _getCallerFile() {
    try {
        var err = new Error();
        var callerfile;
        var currentfile;

        Error.prepareStackTrace = function (err, stack) { return stack; };

        currentfile = err.stack.shift().getFileName();

        while (err.stack.length) {
            callerfile = err.stack.shift().getFileName();

            if(currentfile !== callerfile) return callerfile;
        }
    } catch (err) {}
    return undefined;
}