Mongolian vowel separator causing exceptions.

[GirlBossRush]

Not sure why or how this necessary. polymer.js includes a Mongolian vowel separator, causing the following error:

Script contained non-latin characters that were forced to latin. Some characters may be wrong. 
b {impl: script, parentNode_: undefined, firstChild_: undefined, lastChild_: undefined, nextSibling_: undefined…}
 platform.js?body=1:15
Uncaught SyntaxError: Unexpected token ILLEGAL data:text/javascrip…

᠎
http://www.fileformat.info/info/unicode/char/180e/index.htm

[dfreedm]

That character is part of an "isWhitespace" check in the polymer-expressions library: https://github.com/Polymer/polymer-expressions/blob/master/third_party/esprima/esprima.js#L118

[GirlBossRush]

Can this error be fixed?

[dfreedm]

I think we can work around it by using the "ascii_only" compression option with uglify.

As a side note, I would recommend you set your server or pages to use UTF-8 encoding to avoid problems like this in the future.

[dfreedm]

Fixed with googlearchive/polymer-dev@08a5ba2

Next release (probably today) will have a unicode escaped build.