SCRIPT5009: 'DOMTokenList' is undefined about classlist.js HOT 7 OPEN

Looks like a regression. This is on my radar and I will attempt to fix it if the new maintainers are busy.

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i have same issue here ie 'DOMTokenList' is undefined

from classlist.js.

Same issue in IE9.

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@katesowles does it work with compat mode turned off?

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@eligrey Are you looking for something other than the following?:

• Browser Mode : IE9
• Document Mode : IE9 Standards

I'm using BrowserStack, and not terribly knowledgable about IE in general, so let me know if there's something else I'm missing that I can try.

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classList.js will need a few changes to fix this.

I'm pretty sure this regression was introduced when I first accepted a PR for detection and expansion of partial classList implementations

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Older versions that don't handle toggle()'s second argument or replace() should be fine. I'll look into fixing this when I get time, but I am very busy so you should consider writing a pull request.

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