Cache ScopeKeyData

[phillipskevin]

Currently, each time a property from the scope is used, a new ScopeKeyData is created. Here is the graph of a relatively simple page (http://www.place-my-order.com/restaurants). Each of the items in an orange box is a different ScopeKeyData for "state":

Is there any reason we can't cache these? cc @justinbmeyer

Here is an example of what this would look like:

The code for this is on here.

[justinbmeyer]

We do here: https://github.com/canjs/can-stache/blob/master/src/mustache_core.js#L245

I tried doing it elsewhere and I remember there being problems.

Perhaps there won't be anymore. You'd have to make sure all values to ScopeKeyData(scope, key, options) are the same.

You could probably use KeyTree to make the caching code a bit smaller.