Generated JS fails to launch on Windows

[danrubel]

[user feedback]
Your Javascript generation has flaws.

Just using a simple (unedited) dart file that gets generated by the editor, supplying the following code:

import('dart:html');

class test1 {

 test1() {
 }

 void run() {
   write("Hello World!");
 }

 void write(String message) {
   // the HTML library defines a global "document" variable
   document.query('#status').innerHTML = message;
 }
}

void main() {
 new test1().run();
}

This code fails to run in a browser not running the VM due to the following Javascript error:

Object.defineProperty is not a function
file:///C:/Research/darttest/test1/test1.dart.js
Line 5

Your technology is unusable. I will not use this or recommend it to anyone. In fact, I will recommend that it be avoided to all my many contacts.

Come back when you have something people can use...

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Editor Version: 5104

[DartBot]

This comment was originally written by jimhug@google.com

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This looks pretty critical to me to at least understand which browser the issue is occurring in. My guess is that this is an issue with pre-IE9 browsers in which case we need to clearly state that these browsers will not be supported.

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Set owner to @kasperl.
Removed Priority-Medium label.
Added Priority-Critical label.

[kasperl]

The problem is that we have no way of getting more information (as far as I can tell). I really don't think this issue is critical at this point.

I am all for making it easier for our users to diagnose these issues though. Any browser that does not support Object.defineProperty will run into trouble and we can definitely give a better error message in that case. Any opinions on how we should notify our users? Alert?

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Removed Priority-Critical label.
Added Priority-High label.

[kasperl]

Added Duplicate label.
Marked as being merged into #2198.