Hiya! I've spent a good half an hour playing around with tixy, which has made me interested in how adding a third dimension to the party would switch things up. To build that, I'd ideally be able to reuse some of your code – to this end: Might you consider adding a license to this repository?

I've noticed that you've licensed some of your other repositories under the WTFPL and others under the MIT License, either of which would be perfect if you're willing to share this work freely.

(A link to the 3D clone will, of course, be forthcoming if you're interested. 😉)

With some care, it's possible to define and use functions or variables, using the comma operator to separate statements. For instance, a=(b)=>sin(log(b)),a(x)-a(y**t). For clarity, it'd be nice to use ; instead.

Current browsers all support the BigInt type, but it doesn't seem to work in a tixy program. Would you consider supporting BigInt (the type constructor and the n suffix on numeric literals)? That would allow for things like 1n<<i (use i as a bit index).