asynchronously

asynchronously

asynchronously iterate over items and resolve promises instead of callbacks

This is the async library for promises, without a lot of extra dependencies like in bluebird.

Methods

• attempt(fn:Function|AsyncFunction, ...args:Array<Any>):Promise<Any> - Call a function with the given arguments and reject caught errors
• auto(tasks:Object<String, AsyncFunction|Array<String|AsyncFunction>>):Promise<Object> - Run tasks by specifying dependent additional dependent tasks, resolves to an object containing the mapping of task property names to task result values. See async.auto for how to construct tasks
• delayed(fn:Function|AsyncFunction, ms:Number = 10):Promise<Any> - Execute a function after a given number of milliseconds and resolve the promise to the function return value
• each(items:Iterable, [limit:Number = POSITIVE_INFINITY,] iterator:Function(item:Any, index:Number, items:Iterable)):Promise - Execute an iterator for a given set of items with a limit on the number of simultaneous operations
• every(items:Iterable, [limit:Number = POSITIVE_INFINITY,] iterator:Function(item:Any, index:Number, items:Iterable)):Promise<Boolean> - Resolves true if all iterated items resolve true, otherwise resolves false
• map(items:Iterable, [limit:Number = POSITIVE_INFINITY,] iterator:Function(item:Any, index:Number, items:Iterable)) - Collect the results of all items passed to the iterator
• reduce(items:Iterable, iterator(previous:Any, item:Any, index:Number, items:Iterable), accumulator:Any) - Sequentially call an iterator for each item and include the previous result starting with the value of the accumulator
• some(items:Iterable, [limit:Number = POSITIVE_INFINITY,] iterator:Function(item:Any, index:Number, items:Iterable)):Promise<Boolean> - Resolves true if any iterated items resolve true, otherwise resolves false
• wrap(fn:Function, ...args:Array<Any>):Promise<Any> - Call a function using node callback style and resolve or reject to a promise
• once(event:String|Array<String>, target:EventEmitter, timeout:Number = -1):Promise<Any> - Wait for one or more events on an EventEmitter and optionally timeout the wait
• wait(ms:Number = 10) - Use a promise for a setTimeout call

Changelog

• v2.0.0

• Use async / await where possible
• Change behavior in every/some where errors would be swallowed
• Add once method