Comments (9)
+1
from fantasy-land.
There's some tentative work being done in avow.js.
from fantasy-land.
Please see promises-aplus/promises-spec#97. I don't feel that it's a lost cause. While I can't speak for all Promises/A+ contributors, I'm open to finding a way to make this work.
from fantasy-land.
@briancavalier Let me rephrase it, I don't think rewriting all the promise based code on the web is really an option, at least I don't see us (few projects at mozilla) rewriting all the code that uses current Promise/A compliant code, which assumes promise.then(success, error)
.
That being said, if promises spec can be extended backwards compatible way, I see us adopting it soon enough. By backwards compatible way, I mean don not change meaning of then
, instead add flatMap
etc.. and implement then
with them.
from fantasy-land.
Can I close this, it seems like this is a dead end?
from fantasy-land.
I don't know whether it's useful to create a fantasy-land-promise specification, but I think we should leave this open, for keeping track of promise implementations that follow the fantasyland spec. I think it's still worth pursuing to get Monad methods in all promise implementations, including ES7. While then
/catch
is the standard, there's nothing that prevents us from providing map
, chain
, ap
, of
as well. Let's put some efforts in making them popular for use with promises!
from fantasy-land.
@bergus we have https://github.com/fantasyland/fantasy-land/blob/master/implementations.md to keep track of conforming implementations.
from fantasy-land.
I agree. @bergus I'm not disagreeing with you, I just want to see issues either move forward or closed. We shouldn't keep issues open for ever, without movement.
from fantasy-land.
@joneshf Sure, I meant this issue less to keep track of them but rather to encourage their use :-)
Maybe we could rename it into "Get FL methods into ES7 promises"?
What do you think about an own section in implementations.md for promises?
from fantasy-land.
Related Issues (20)
- [Question] Type signature for ap HOT 2
- Adding Folktale to implementations.md
- Equivalent for Serial typeclass? HOT 1
- Is really necessary specify "No parts of <...> value should be checked"? HOT 11
- Add Traversable1 HOT 3
- Help understanding use of identity in Traversable laws HOT 2
- Fantasy Land specification version number HOT 1
- Switch to Symbols HOT 2
- Wrong argument in Traversable HOT 4
- Is monet.js compatible? HOT 1
- Why FL specifies the ChainRec typeclass when there is the trampoline monad? HOT 7
- What does "and" mean? HOT 2
- Can someone explain me how I should understand Semigroup? HOT 5
- Remove all OOP features HOT 21
- Traversable and Foldable use multiple variables as arguments HOT 12
- Profunctor should require Contravariant HOT 10
- Implementation of `Compose` is confusing HOT 3
- should Chain properties depends on fantasy-land/ap (and possibly .map)? HOT 4
- Why putting "fantasy-land/" before everything in readme? HOT 3
- Is `Pair` a valid instance of `MonadRec`?
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from fantasy-land.