Calling methods on proxies returned when querying nodes can yield different results than calling directly on impl even without shadow dom use

[labriola]

I realize this is intended in the case where there is ShadowDom in play, however, it seems to be affecting nodes in other situations.

A simple test case is available here. When using Canary (to avoid the polyfill) foo will have child nodes. When using the polyfill, the proxy will indicate false although the impl will indicate true.

http://jsbin.com/ulIFeHu/4/edit?html,console,output

[labriola]

Pretty sure it comes down to this code and method.

hasChildNodes: function() {
  return this.firstChild === null;
},

If this.firstChild is strictly null would be the only time hasChildNodes() would be true.

I believe this logic is backwards. If you agree, I already submitted a patch request and yes CLA is filed.

[labriola]

Fixed root cause in pull request 265 googlearchive/ShadowDOM#265