[specialist]

Neat.

OC and you just reminded me of Unicode normalization. I've not needed anything in my own work. Might be useful for others.

Another random notion: Validate UUIDs? Like identify its kind, verify its well formed?

[bh213]

It does validate UUID and detects a few versions (I'd have to check which npm package is used for UUID ) but just copy one into input and it should be validated.