Because the source-map may not be available. And they might not know Rust. Or perhaps having to setup a Rust dev env to play with this code is too much work and

Because the source-map may not be available. And they might not know Rust. Or perhaps having to setup a Rust dev env to play with this code is too much work and it's just not worth it. Anyway, I think I should explain my thoughts better instead of only pointing out a problem. I wrote this comment: https://news.ycombinator.com/item?id=9743859 https://news.ycombinator.com/item?id=9743859