kodash

Knockout dependency detection in chained lodash (soon to be underscore as well) calls.

It's a simple extension of KnockoutJS which allows you to call lodash functions on observableArrays and observables.

Getting the value from the wrapper

var x = ko.observableArray([1,2,0,0,3,4,5]);
x._().filter().value();
//=>[1,2,3,4,5]

Mutating

Now let's say you want to mutate your observableArray with the current value of your lodash calls

var x = ko.observableArray([1,2,0,0,3,4,5]);
x._().filter().mutate();
x();
//=>[1,2,3,4,5]

Making observableArrays

var x = ko.observableArray([1,2,0,0,3,4,5]);
var y = x._().filter().observe();
x([1,2,0,0,3]);
y();
//=>[1,2,3]

Chaining dependencies

var x = ko.observableArray([1,2,3,4,5]);
var y = ko.observableArray([1]);
var z=x._().difference(y).observe();
z();
//=>[2,3,4,5]

But with another call

y([1,2]);
z();
//=>[3,4,5]

One thing to note. Lodash unwraps it's lodashWrapper class on certain calls. If you expect lodash to do this for one of your calls, make sure that you chain it.

Checkout this jsfiddle for more intersting behavior