en/em dashes causing conflict with security setting

[frostbitten]

A web host I publish through, using a built-in editor, calls the code invalid and will not save. Support has pointed me to the en and em dashes as the cause. I have updated my file to:
// all 3 dash types: regular, en, em
var dashes = ['\u002D','\u2013','\u2014'];

I'm not sure if this is a problem others experience with any regularity, or if it is a security issue by any means, but these are my 2 cents.