I was just playing around in node a few days ago, and had to mock some console statements. I stumbled upon this exact API and played with the output bit. It's a

I was just playing around in node a few days ago, and had to mock some console statements. I stumbled upon this exact API and played with the output bit. It's a useful feature I never knew about in my years of doing javascript and it's kind of surreal to see it on the top of HN just a few days later!