[KolmogorovComp]

Doesn't the implementation being in rust for many browser (`temporal_rs`) make it possibly slower than it could be in pure JS? Calendar is not very intensive process, so I would not be surprised if the slowness of boundary passing make it slower.

[fabon]

Actually most APIs of JavaScript are implemented in C++ in modern browsers, not in JS. I guess adopting Rust isn't an obstacle for performance.