Crash when Polymer/Platform loaded twice

[secretrobotron]

If Polymer gets loaded more than once via

  <script src="http://www.polymer-project.org/platform.js"></script>
  <link rel="import" href="http://www.polymer-project.org/polymer.html">

Polymer & Platform will crash. Is there any sane way to recover?

e.g. http://jsbin.com/yisadate/1/edit

Why?!

It would be cool to have documents that contain polymer definitions and markup to display what they are. e.g. Visiting component.html would display information about the component (and even render it!), but using it in a link tag will only pay attention to the <polymer-element>.

[sjmiles]

If we made that work, then every time you loaded a component, the browser would reload platform.js and reparse it. This would be bad for performance, and you should not try to do that.

[sjmiles]

Note the above is specifically about platform.js. You can replicate the polymer.html import infinity times with no cost. This is built in to the component system, e.g.:

http://jsbin.com/yisadate/2/edit

[secretrobotron]

Just curious: doesn't the browser reload and reparse platform.js regardless of how many times it's included? Isn't the onus on the developer to not include platform.js more than is necessary?

Note that I'm not saying it's great practice, but it looks as though it actively crashes things when I try. Am I wrong?

[sjmiles]

No, you are not wrong. I'm saying there is a disincentive to fix it, because it would allow people to do things which are bad for everybody.

[secretrobotron]

Good enough :). Thanks!