this post was submitted on 09 Apr 2026
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Typescript doesn’t have linear types. Not even Haskell has linear types (correction GHC has had LT by extension since 9.0). Give Rust some credit for having linear types (AKA borrow checker).
Ps. Typescript doesn’t have dependent types and their type system is a joke even compared to Purescript. Here’s a little writeup about it: https://lemmy.dbzer0.com/post/66729809
GHC has had experimental support for linear types in Haskell since version 9.0.1
That's not realistic or "fair" - most Haskell projects will use a dozen or so extensions easily. GHC has been a platform for language experimentation for a long time; standardisation efforts keep on cropping up in annual surveys. (Eg, swapping in Text for String in base is long overdue, but it's a hold over from days where FP pedagogy was seen as more important.)
Typescript's string pattern types are quite neat though
That’s true and they’re great for prototyping but I’ve fallen in love with Purescript for that domain. So I’m a bit biased.