Convert the code by hand? Use the CoffeeScript compiler? Or, use decaffeinate?

We started with CoffeeScript in 2013, and that was the right choice at the time. The JavaScript language was at a standstill, and CoffeeScript overhauled JavaScript by introducing lots of cool features. It certainly had problems, but it was the best there was. Over the next few years, JavaScript made a comeback. Inspired largely by many of the CoffeeScript features…