Top 3 JavaScript fantasy-land Projects

fantasy-land

13 9,578 0.0 JavaScript

Specification for interoperability of common algebraic structures in JavaScript

Project mention: Should I Move From PHP to Node/Express? | reddit.com/r/node | 2022-10-13

There are respective fantasy land and static land specs, with the law conformance checks.
Sanctuary

2 2,960 1.0 JavaScript

:see_no_evil: Refuge from unsafe JavaScript

Project mention: Hegel – An advanced static type checker for JavaScript | news.ycombinator.com | 2022-10-11

I wonder if this will be something that functional libraries like Ramda [1] or Sanctuary [2] will be able to benefit from.
One of the reasons these libraries don't work so well with TS is that it doesn't have ML-style whole program inference and hence doesn't work so well with patterns like currying. Hegel seems more capable in that regard.
[1] https://ramdajs.com/
[2] https://github.com/sanctuary-js/sanctuary
Sonar

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Fluture

2 2,390 4.7 JavaScript

:butterfly: Fantasy Land compliant (monadic) alternative to Promises

Project mention: FP for web/mobile apps in 2022? | reddit.com/r/functionalprogramming | 2022-08-02

I think that it is fine to code perfectly functional apps using TypeScript with React Native and React. You will have a huge community to support you with documentation, libraries, and available labor. Yes, the language has a lot of soundness holes and misses a lot of useful features like pattern matching or type classes but, for me, it is a valid trade-off. There are libraries for better FP programming in TypeScript like fp-ts, io-ts, and fluture.

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2022-10-13.