DEPRECATED: deferred.then is deprecated and will be removed in an upcoming release. Use deferred.promise.then instead.
promise.yield(promiseOrValue) convenience API for substituting a new value into a promise chain.
promise.spread(variadicFunction) convenience API for spreading an array onto a fulfill handler that accepts variadic arguments. Mmmm, buttery
Doc improvements:
- when() and promise.then() have more info about callbacks and chaining behavior.
- More info and clarifications about the roles of Deferred and Resolver
- Several minor clarifications for various APIs
Internal improvements to assimilation and interoperability with other promise implementations.

1.6.1

published 1.6.1 • 12 years ago

Changelog

1.6.0

published 1.6.0 • 12 years ago

Changelog

New when.join - Joins 2 or more promises together into a single promise.
when.some and when.any now act like competitive races, and have generally more useful behavior. Read the discussion in #60.
Experimental progress event propagation. Progress events will propagate through promise chains. Read the details here.
Temporarily removed calls to Object.freeze. Promises are no longer frozen due to a horrendous v8 performance penalty. Read discussion here.
- IMPORTANT: Continue to treat promises as if they are frozen, since freeze() will be reintroduced once v8 performance improves.
when/debug now allows setting global a debugging callback for rejected promises.

published 1.5.2 • 12 years ago

Changelog

published 1.5.1 • 12 years ago

Changelog

Performance optimization for when.defer, up to 1.5x in some cases.
when/debug can now log exceptions and rejections in deeper promise chains, in some cases, even when the promises involved aren't when.js promises.

published 1.5.0 • 12 years ago

Changelog

New task execution and concurrency management: when/sequence, when/pipeline, and when/parallel.
Performance optimizations for when.all and when.map, up to 2x in some cases.
Options for disabling paranoid mode that provides a significant performance gain in v8 (e.g. Node and Chrome). See this v8 performance problem with Object.freeze for more info.
Important: deferred and deferred.resolver no longer throw when resolved/rejected multiple times. They will return silently as if the they had succeeded. This prevents parties to whom only the resolver has been given from using try/catch to determine the state of the associated promise.
- For debugging, you can use the when/debug module, which will still throw when a deferred is resolved/rejected multiple times.