[jwhiles]

This is a nice project, but it kind of feels like the result of someone who's just learnt about Rust/Haskell and wants to port what they know to JavaScript.

There's a lot of more established and battle tested libraries with the same functionality - I've recently been using Purify and finding it to be absolutely fine :)

their version of the same feature is here: https://gigobyte.github.io/purify/adts/Maybe

[grose]

Whoa, these docs are really nice. Love how it includes the functional Haskellish signature, TS signature, and useful examples for each. Props to the authors.