This tiny bit of code will help you identify where the logging is being called from. The nice thing is it works in the browser and in node. Source: http://remysharp.com/2014/05/23/where-is-that-console-log/

consolelog.js

['log', 'warn'].forEach(function(method) {
  var old = console[method];
  console[method] = function() {
    var stack = (new Error()).stack.split(/\n/);
    // Chrome includes a single "Error" line, FF doesn't.
    if (stack[0].indexOf('Error') === 0) {
      stack = stack.slice(1);
    }
    var args = [].slice.apply(arguments).concat([stack[1].trim()]);
    return old.apply(console, args);
  };
});