My AoC '17 solutions written in JavaScript that runs within Node.
My solutions will almost certainly not be the most optimized, best practices or heck even actually work properly.
Run using Node 8 (or lower maybe, who knows!).
Run the days solutions using node day1, node day2, etc. Make sure to npm install first to make sure any deps are installed.
Run the tests (and automatically runs solutions for some reason) using npm test day1, npm test day2, etc.