#What's new in 2.0
- Resource management - never leak resources again
- Promisification on steroids - entire modules can now be promisified with one line of code
.map(),.each(),.filter(),.reduce()reimagined from simple sugar to powerful concurrency coordination tools- API Documentation has been reorganized and more elaborate examples added
- Deprecated progression and deferreds
- Improved performance and readability
Features:
- Added
using()anddisposer() .map()now calls the handler as soon as items in the input array become fulfilled- Added a concurrency option to
.map() .filter()now calls the handler as soon as items in the input array become fulfilled- Added a concurrency option to
.filter() .reduce()now calls the handler as soon as items in the input array become fulfilled, but in-order- Added
.each() Promise.resolve()behaves likePromise.cast.Promise.castdeprecated.- Synchronous inspection: Removed
.inspect(), added.value()and.reason() Promise.join()now takes a function as the last argument- Added
Promise.setScheduler() .cancel()supports a custom cancellation reason.timeout()now cancels the promise instead of rejecting it.nodeify()now supports passing multiple success results when mapping promises to nodebacks- Added
suffixandfilteroptions toPromise.promisifyAll()
Breaking changes:
- Sparse array holes are not skipped by collection methods but treated as existing elements with
undefinedvalue .map()and.filter()do not call the given mapper or filterer function in any specific order- Removed the
.inspect()method - Yielding an array from a coroutine is not supported by default. You can use
coroutine.addYieldHandler()to configure the old behavior (or any behavior you want). .any()and.some()no longer use an array as the rejection reason.AggregateErroris used instead.