final release

[davidchambers]

The Ramda team has decided that this library is no longer serving the JavaScript FP community well. It has not kept up with changes to the Fantasy Land spec, and many of the data types lack useful features available in other libraries.

The consensus among the Fantasy Land team is that the proliferation of implementations of the same handful of algebraic data types is a trend which should be reversed. The more implementations of an ADT exist, the more unlawful implementations are likely to exist. Furthermore, it's impractical to mix and match implementations, resulting in functions such as this:

//    sanctuaryEitherToRamdaFantasyEither :: SEither a b -> RFEither a b
const sanctuaryEitherToRamdaFantasyEither = S.either(Either.Left, Either.Right);

There are, though, a number of people using ramda-fantasy. We wish to wind down this project without affecting these users, so of course the npm releases will remain available indefinitely. Furthermore, @scott-christopher has suggested merging some of the open pull requests and making one final release. I think this is an excellent idea.

In fact, I suggest going one step further. What do people think of this approach?

1. Merge open pull requests which do not contain breaking changes.
2. Release v0.8.0.
3. Update fantasy-land@1.0.x compatibility #131 to provide compatibility with Fantasy Land v3.2.x.
4. Merge fantasy-land@1.0.x compatibility #131.
5. Release v1.0.0.
6. Update the readme to state that this project is no longer under development and to provide links to replacement libraries.

/cc @SimonRichardson

[SimonRichardson]

Go go go 👌

[CrossEye]

🌿

[kwijibo]

I'd just like to say thanks to the contributors for having done this in the first place - I found the ramda-fantasy implementations, and especially the documentation, a great help in understanding some of the different ADTs. (I also miss its presence from the Ramda REPL!)

[tusharmath]

@davidchambers Could you share links of possible libraries one should use for new projects?

[davidchambers]

Here are the proposed alternatives:

• Maybe: sanctuary-js/sanctuary-maybe†
• Either: sanctuary-js/sanctuary-either†
• Future: fluture-js/Fluture
• State: fantasyland/fantasy-states
• Tuple: fantasyland/fantasy-tuples
• Reader: fantasyland/fantasy-readers
• IO: fantasyland/fantasy-io
• Identity: fantasyland/fantasy-identities

† Currently only available as part of Sanctuary.

[scott-christopher]

All PRs other than #131 have been merged. I'll go ahead and release 0.8 shortly.

[scott-christopher]

0.8.0 has been released. #131 can now be updated.

[buzzdecafe]

Thanks @scott-christopher !

[ds82]

Until sanctuary-maybe and sanctuary-either are available, what should I use for new projects? I prefer ramda over sanctuary .. I would rather not install sanctuary just to have Maybe & Either ..

Any thoughts on that?

[buzzdecafe]

you can keep using RF, but it will not be getting further upgrades (unless someone else takes it up); or you can try folktale as well:

• https://github.com/folktale/data.either
• https://github.com/folktale/data.maybe

[jgranduel]

Just to mention folktale-2.0.0 (http://folktale.origamitower.com/) released on 2017-07-11 has breaking changes in its API:

• Maybe
  http://folktale.origamitower.com/docs/v2.0.0/migrating/from-data.maybe/
  doc: http://folktale.origamitower.com/api/v2.0.0/en/folktale.maybe.html

• Either
  Either[Left, Right] is replaced by Result[Error, OK]
  http://folktale.origamitower.com/docs/v2.0.0/migrating/from-data.either/
  doc : http://folktale.origamitower.com/api/v2.0.0/en/folktale.result.html

Both are "stable" in their stability index.

[niksosf]

HI guys, just wanted to mention this library that seems to do a whole lot of fp stuff but barely anyone notices: urbandrone/futils it even has transducers and trampolining. let me know what you think.