no 'localName' completion for top-level html element of html package

[guillermooo]

More details here:

guillermooo/dart-sublime-bundle#563

[bwilkerson]

Given your example:

import "package:html/parser.dart";

main() {
  var p1 = parse("<p>hello</p>");
  var t1 = p1.nodes.first;
  print(t1.^);
}

Note that parse returns a Document, Document.nodes returns a NodeList, and NodeList.first returns a Node. Given that localName is not defined on Node, not including it in the list seems reasonable to me. Am I missing something?

[guillermooo]

import "package:html/parser.dart";

main() {
  var p1 = parse("<p>hello</p>");
  var t1 = p1.nodes.first;
  print(t1.localName);
}

That returns "html" for me. That's what puzzled me, but I have not dug into the code.

[bwilkerson]

To be clear, I was referring to the static types of the methods and getters, not the run-time types of the values returned by them.

[guillermooo]

I think I was expecting the Dart VM to return an error in checked mode here and enforce this:

...
(t1 as dom.Element).localName
...

But it turns out the VM never enforces anything, it's just the DAS that is able to flag more issues as you get more explicit with var decls, etc. I keep forgetting this.

So everything works as I expect with this:

...
// var t1 = parsed.nodes.first;
dom.Node t1 = parsed.nodes.first;

t1.localName // DAS flags this now but the VM runs it happily anyway

[guillermooo]

After your explanations, this is a no-bug, so closing this out.