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# v1.5.2
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- Allow using `"consructor"` as an argument in `memoize` (#998)
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- Give a better error messsage when `auto` dependency checking fails (#994)
- Various doc updates (#936, #956 , #979 , #1002 )
# v1.5.1
- Fix issue with `pause` in `queue` with concurrency enabled (#946)
- `while` and `until` now pass the final result to callback (#963)
- `auto` will properly handle concurrency when there is no callback (#966)
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- `auto` will now properly stop execution when an error occurs (#988, #993 )
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- Various doc fixes (#971, #980 )
# v1.5.0
- Added `transform` , analogous to [`_.transform` ](http://lodash.com/docs#transform ) (#892)
- `map` now returns an object when an object is passed in, rather than array with non-numeric keys. `map` will begin always returning an array with numeric indexes in the next major release. (#873)
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- `auto` now accepts an optional `concurrency` argument to limit the number of running tasks (#637)
- Added `queue#workersList()` , to retrieve the list of currently running tasks. (#891)
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- Various code simplifications (#896, #904 )
- Various doc fixes :scroll: (#890, #894 , #903 , #905 , #912 )
# v1.4.2
- Ensure coverage files don't get published on npm (#879)
# v1.4.1
- Add in overlooked `detectLimit` method (#866)
- Removed unnecessary files from npm releases (#861)
- Removed usage of a reserved word to prevent :boom: in older environments (#870)
# v1.4.0
- `asyncify` now supports promises (#840)
- Added `Limit` versions of `filter` and `reject` (#836)
- Add `Limit` versions of `detect` , `some` and `every` (#828, #829 )
- `some` , `every` and `detect` now short circuit early (#828, #829 )
- Improve detection of the global object (#804), enabling use in WebWorkers
- `whilst` now called with arguments from iterator (#823)
- `during` now gets called with arguments from iterator (#824)
- Code simplifications and optimizations aplenty ([diff](https://github.com/caolan/async/compare/v1.3.0...v1.4.0))
# v1.3.0
New Features:
- Added `constant`
- Added `asyncify` /`wrapSync` for making sync functions work with callbacks. (#671, #806 )
- Added `during` and `doDuring` , which are like `whilst` with an async truth test. (#800)
- `retry` now accepts an `interval` parameter to specify a delay between retries. (#793)
- `async` should work better in Web Workers due to better `root` detection (#804)
- Callbacks are now optional in `whilst` , `doWhilst` , `until` , and `doUntil` (#642)
- Various internal updates (#786, #801 , #802 , #803 )
- Various doc fixes (#790, #794 )
Bug Fixes:
- `cargo` now exposes the `payload` size, and `cargo.payload` can be changed on the fly after the `cargo` is created. (#740, #744 , #783 )
# v1.2.1
Bug Fix:
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- Small regression with synchronous iterator behavior in `eachSeries` with a 1-element array. Before 1.1.0, `eachSeries` 's callback was called on the same tick, which this patch restores. In 2.0.0, it will be called on the next tick. (#782)
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# v1.2.0
New Features:
- Added `timesLimit` (#743)
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- `concurrency` can be changed after initialization in `queue` by setting `q.concurrency` . The new concurrency will be reflected the next time a task is processed. (#747, #772 )
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Bug Fixes:
- Fixed a regression in `each` and family with empty arrays that have additional properties. (#775, #777 )
# v1.1.1
Bug Fix:
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- Small regression with synchronous iterator behavior in `eachSeries` with a 1-element array. Before 1.1.0, `eachSeries` 's callback was called on the same tick, which this patch restores. In 2.0.0, it will be called on the next tick. (#782)
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# v1.1.0
New Features:
- `cargo` now supports all of the same methods and event callbacks as `queue` .
- Added `ensureAsync` - A wrapper that ensures an async function calls its callback on a later tick. (#769)
- Optimized `map` , `eachOf` , and `waterfall` families of functions
- Passing a `null` or `undefined` array to `map` , `each` , `parallel` and families will be treated as an empty array (#667).
- The callback is now optional for the composed results of `compose` and `seq` . (#618)
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- Reduced file size by 4kb, (minified version by 1kb)
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- Added code coverage through `nyc` and `coveralls` (#768)
Bug Fixes:
- `forever` will no longer stack overflow with a synchronous iterator (#622)
- `eachLimit` and other limit functions will stop iterating once an error occurs (#754)
- Always pass `null` in callbacks when there is no error (#439)
- Ensure proper conditions when calling `drain()` after pushing an empty data set to a queue (#668)
- `each` and family will properly handle an empty array (#578)
- `eachSeries` and family will finish if the underlying array is modified during execution (#557)
- `queue` will throw if a non-function is passed to `q.push()` (#593)
- Doc fixes (#629, #766 )
# v1.0.0
No known breaking changes, we are simply complying with semver from here on out.
Changes:
- Start using a changelog!
- Add `forEachOf` for iterating over Objects (or to iterate Arrays with indexes available) (#168 #704 #321 )
- Detect deadlocks in `auto` (#663)
- Better support for require.js (#527)
- Throw if queue created with concurrency `0` (#714)
- Fix unneeded iteration in `queue.resume()` (#758)
- Guard against timer mocking overriding `setImmediate` (#609 #611 )
- Miscellaneous doc fixes (#542 #596 #615 #628 #631 #690 #729 )
- Use single noop function internally (#546)
- Optimize internal `_each` , `_map` and `_keys` functions.
