Any steam page - showPopover type error

[Gemmaugr]

I think I remember steam having minified react errors, so they're probably using React site framework, which seems to now use another kind of displacing "feature" (with no fallback to the working old one)

Code: Select all

Impression Tracking not enabled  
chunk~69438e232.js:13:375745
TypeError: T.showPopover is not a function
Stack trace:
[object Object]  
main.js:13:270174
POST 
XHR 
https://api.steampowered.com/IClientMetricsService/ReportClientError/v1 [HTTP/2.0 200 OK 771ms]

Reading CanIUse, it seems that Safari/Web Kit was the last one to implement it in 2025, so now it's a "baseline" https://caniuse.com/wf-popover standard.

[Moonchild]

Filed Issue #3124 (UXP). Help appreciated!

[Gemmaugr]

I haven't touched code seriously in 20 years I'm afraid, or I'd love to help. I took 4 years of programming in school, but always having to invoke libraries killed the interest for me. I wanted to know what does why and how, but it was all too..hidden and abstracted sadly.

Is this relevant though: https://github.com/mozilla-firefox/fire ... eb2c4d0339 ?

[Moonchild]

No, i don't think we have the api at all to begin with so before doing any follow-up work like that commit, it needs to have a base implementation.

Also, the "help appreciated" was not necessarily aimed at you, but aimed at anyone who would like to give it a shot

[athenian200]

Is this relevant though: https://github.com/mozilla-firefox/fire ... eb2c4d0339 ?

It's connected, though looking at the bug on Bugzilla helps a lot more than looking at it on GitHub.

This appears to be the first thing that looks like an implementation:

https://bugzilla.mozilla.org/show_bug.cgi?id=1820544

And I also found a rejected implementation:

https://bugzilla.mozilla.org/show_bug.cgi?id=1816451

Not sure what the difference is between them, but they both seem to expose it in a different way. Oh, and there's also this meta-bug:

https://bugzilla.mozilla.org/show_bug.cgi?id=1808823

Looks pretty involved, honestly.

[UCyborg]

There's a polyfill that could be added with Greasemonkey or whatever script manager: https://unpkg.com/@oddbird/popover-polyfill/dist/popover.iife.min.js

Though videos are invisible and trying to inspect (merely opening Inspector) hangs the browser. 🙃

[adoxa]

The videos disappear because the polyfill doesn't seem to handle popover="manual"; the freeze is the nesting CSS issue (took about 17½ minutes to come good on my system). Here's a Modify HTTP Response filter to remove the showPopover call.

Code: Select all

[["store.fastly.steamstatic.com",["/main\\.js/",["T.showPopover();",""]]]]