RSVP 4.0

[stefanpenner]

checklist as time permits

• [ ] drop helpers on RSVP namespace, all helpers that need the constructor for inheritance should end-up on Promise constructor
• [x] new AMD build
• [x] fast denodeify
• [ ] drop cast
• [ ] drop defer?
• [ ] drop eventTarget
• [ ] add reduce
• [ ] error handler on by default
• [ ] emit unhandled error stuff https://github.com/tildeio/rsvp.js/issues/417

[H1D]

~~why drop cast()?~~

[H1D]

for future readers. resolve() replaces cast() https://github.com/tildeio/rsvp.js/pull/207

[stefanpenner]

i have removed 2 comments unrelated to this issue, and transfered the comments to https://github.com/tildeio/rsvp.js/issues/336

[mphasize]

Hi, are there any plans for something like RSVP.map, .hash or .all with concurrency control? I have a use case, where I need to make a number of calls to an API that is rate-limited and specifying the number of calls that are executed in parallel would help a lot. (Similar to https://github.com/petkaantonov/bluebird/blob/master/API.md#option-concurrency)

[stefanpenner]

Hi, are there any plans for something like RSVP.map, .hash or .all with concurrency control? I have a use case, where I need to make a number of calls to an API that is rate-limited and specifying the number of calls that are executed in parallel would help a lot. (Similar to https://github.com/petkaantonov/bluebird/blob/master/API.md#option-concurrency)

their are no such plans currently.

[mphasize]

Thanks for clarifying, good to know. :)

[bekzod]

maybe also drop old IE support ?

[stefanpenner]

maybe also drop old IE support ?

How old do you think?

[bekzod]

below IE9 no ?

[bekzod]

can I take drop helpers on RSVP namespace... ?

[bekzod]

it is also good idea to drop option to pass promise to RSVP.filter because in others helpers RSVP.map and RSVP.filter you just pass array (you cannot pass promise), so it is not uniform

[stefanpenner]

can I take drop helpers on RSVP namespace... ?

sure, but we may need an upgrade transition path (so a quick guide, and maybe a compat shim) for some. At-least for ember users

[bekzod]

also adding .return(val) helper (alias to .then(()=> val)) would super helpful

[stefanpenner]

also adding .return(val) helper (alias to .then(()=> val)) would super helpful

I think i would prefer to have a second module, something like rsvp-party for such extra additions. Adding things to promise.prototype that isn't in the spec, or isn't destined for the spec is a tad risky IMHO.

[bekzod]

@stefanpenner when we will start merge for 4.0.0 :P ? maybe we just integrate compat shim to ember core and just deprecate stuff from there, and for others we can write up transition guide ? thoughts

[bekzod]

or we can move namespace changes and dropping things to 5.0.0, and in 4.0.0 drop es5 fallbacks, add reduce, add eager map/filter/reduce so it be seamless upgrade

[bekzod]

should we also drop rethrow not seeing it being used anywhere :P ?