I happily use Fira Code [1] with ligatures. It has nothing to do with pushing coding style away from monospace, and everything to do with readability. Aesthetics are certainly a part of it but perfectly compatible with it too.

Of particular note is that the JS arrow function becomes a real arrow ⇒, which is nicer than the operator-ish rendering of equals and a greater than sign. Other quality of life improvements are reshaping ripples of characters to be clearer, such as a reshape to www and **. Triple bar equals is nice too given the differences in JS.

[1] https://github.com/tonsky/FiraCode