Because it's all just types, there's nothing _to_ run. Instead, you'll want to hover your cursor over the `PGunX` types at the end of the file in the playground; this will cause the TS editor to compute that type and it should display a string corresponding to the board state.
Comments
How do I run this/see the results? I'm a little lost.
Same here. I hit "run" but get an error
Because it's all just types, there's nothing _to_ run. Instead, you'll want to hover your cursor over the `PGunX` types at the end of the file in the playground; this will cause the TS editor to compute that type and it should display a string corresponding to the board state.