Anthony Frehner
frehner.me
Anthony Frehner
@frehner.me
Web, standards, tooling, sports, video games. https://frehner.me

Working @Shopify, on Polaris (web components)
Yeah - it seems like there’s frequently a desire to punch a hole through the shadow dom to allow customizations. Lots of effort put in to allow that in some ways.

We just haven’t wanted to actually do that for our use cases yet haha
November 28, 2025 at 5:05 PM
So you can mess up the parent’s metadata if you’re not careful; gotta do stuff like Object.hasOwn() checks.

github.com/tc39/proposa...

2/2
GitHub - tc39/proposal-decorator-metadata
Contribute to tc39/proposal-decorator-metadata development by creating an account on GitHub.
github.com
November 24, 2025 at 11:18 PM
Just bought! (Yesterday actually, but that’s ok)

Looking forward to getting to it!
November 20, 2025 at 4:11 PM
I’m too much of a boomer to even be aware that TikTok doesn’t allow that.

Fun.
November 19, 2025 at 2:29 AM
Stream in HTML that contains custom elements that automatically upgrade?

Is this built-in client side hydration? 🤔🤔🤔😆
November 19, 2025 at 2:27 AM
This video with the code sample above you while you’re talking is good. I personally struggle if it’s just a person talking

Also, a link to go learn more / go more in depth / go read the spec PR / etc would be nice, and would maybe drive organic traffic to a Mozilla page you make for this too.
November 19, 2025 at 2:15 AM
I’ll give you 145 for it
November 16, 2025 at 9:00 PM
I learned a lot. I was able to provide input on things. I’m excited to get even more involved.
November 14, 2025 at 11:33 PM
Put it in the spec asap! 😆
November 12, 2025 at 12:10 PM
If they’ve moved to an iframe!
October 31, 2025 at 2:07 AM
Been looking forward to playing around with the combo box stuff since we talked about it in last week’s openui meeting
October 21, 2025 at 11:23 PM
Nothing like the announcer curse
October 18, 2025 at 3:26 AM
Perhaps at TPAC?
October 2, 2025 at 10:59 PM
I’ve been following that (and my team is very interested in this proposal);

Would enjoy working to understand your team’s hesitations, especially given Mason’s last comment and all the research + collaboration with accessibility experts there has been on this.

❤️
October 2, 2025 at 10:57 PM
Jake you’re not supposed to critically look at these; just hype and boost.

(Thanks for catching that, we’ll get it fixed up!)
October 1, 2025 at 6:49 PM
Just finished it. Very nice write up, thanks for the work on this
October 1, 2025 at 12:23 AM