Tiny flow control Library for NodeJS

Just 3 useful functions:

• taskList( items, func, callback, opts)
• taskMap( items, func, callback, opts)
• taskChain( items, func, callback, opts)

How to use

All of them execute a function func on an array of elements items and call callback(results) when they finish:

var items = [obj1,obj2,obj3,objn];
function func(obj,done){ //some long async task
    
    //do something on obj
    
    done(null,obj); //when the procedure is completed with no error
    //or done(null,obj); //when the procedure is completed with an error
}
function callback(errors,unordered_items){ /* ... */ }
taskList(items,func,callback);

The differences are:

- tasklist

Execute a function on an array of items regardless of

• order of execution
• order of resulting array
• concurrency limit

- taskmap

Execute a function on an array of items regardless of

• order of execution
• concurrency limit

but keeping

• order of resulting array

- taschain

Execute a function on an array of items; each execution comes exactly after the last one. So use it if you care about concurrency limit and order of execution.