Of course a MIPS device is a lot more powerful than the ESP32.
1. I find the font really hard to read. I really wish it was 2x the resolution. I think it would still have a cool retro pixelated look but be so much more legible.
2. The keyboard controls don't always seem to register on my system (Chrome, MacOS). Or maybe it's just not obvious which keys to press. I tried playing two games, they loaded, music started, but I wasn't actually able to get to the point where I'm actually playing the game.
And since JavaScript implies TypeScript, I once wrote a small tool to automatically build games from .ts files, with functions declarations for the whole API: https://github.com/scambier/tic80-typescript
I don't use it anymore, but try to keep the declarations up-to-date :)
Personally, I'm still undecided as I like the use of JavaScript in TIC-80 and the fact that it is open source, versus the wealth of materials available for the PICO-8.