Echo JS 0.11.0

> When you need to copy an array use Array#slice. jsPerf

The jsPerf for that showed the native loop being faster than slice.

Cool.  One question, why did you opt for add/update instead of an all inclusive set?

D'oh.  Don't know how I missed that.

Interesting.  But I'm a little confused about your usage example.

You have chain.val = val

but as far as I can tell that will just resolve to undefined?

I'm building something similar aimed at mocking API responses for client-side testing.

https://github.com/rco8786/apimok