idris VS egison

there're a lot of languages that can target js/wasm these days, some of which are even self-hosting (ghc) and can target browser (ghcjs), a lot are written in haskell which again can target browser but the closest to my request i've found is an old thread of idris supposedely compilable by ghcjs and while there are plenty "run your code in browser (via server compilation)" services i've yet to see a working "running compiler in browser in browser example"

So apparently there's a package manager called Inigo, but there are only a few packages in it. There's an idris-hackers group on github, that's linked from the idris-lang.org page. None of those libraries appear in Inigo though. So seems that Inigo isn't really a thing people are using.

Here's Idris' Nat optimisations

As of 2013, Idris does not want to even support user defined Unicode operators, for the usual reasons.

Look into egison, a "Pattern-Match-Oriented language": https://www.egison.org/

Have a look at Egison. It should be a source of inspiration to anyone doing generalised pattern matching. [_,_/2] ~= [2,1]|[6,3] in particular is even clearer in Egison: $p :: #(p / 2).

I think this is a bad idea. In fact, Egison offers a precedent with a better approach. The offered alternative is strictly more powerful as it allows you to refer to a single subpattern multiple times in a greater pattern, and even marks a computable expression you can use in patterns, allowing code like

Egison language. Research language that does some really neat stuff with pattern matching.

Egison is weird https://www.egison.org -- it takes a single concept (pattern matching) and pushes it as far as it will go.