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Maniphest T356312

Wikimini JavaScript error: can't redefine non-configurable property "__swiffy_override"
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Description

Sometime, when loading Wikimini, the Swiffy banner is not shown and instead this error is shown in the console:

TypeError: can't redefine non-configurable property "__swiffy_override" TypeError: can't redefine non-configurable property "__swiffy_override"
    <anonymous> https://sv.wikimini.org/w/load.php?debug=false&lang=sv&modules=swiffy.fr.js&skin=wikimini&version=1cm9g3i:88
    <anonymous> https://sv.wikimini.org/w/load.php?debug=false&lang=sv&modules=swiffy.fr.js&skin=wikimini&version=1cm9g3i:428
    jQuery 8
    <anonymous> https://sv.wikimini.org/w/load.php?debug=false&lang=sv&modules=swiffy.fr.js&skin=wikimini&version=1cm9g3i:1
load.php:176:570
    jQuery 14
    <anonymous> https://sv.wikimini.org/w/load.php?debug=false&lang=sv&modules=swiffy.fr.js&skin=wikimini&version=1cm9g3i:1

This error is not easy to be reproduced. Reload the page some times.

https://sv.wikimini.org/wiki/Test

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ValerioBoz-WMCH created this task.Jan 31 2024, 6:19 PM
ValerioBoz-WMCH triaged this task as High priority.
ValerioBoz-WMCH added a comment.Jan 31 2024, 8:12 PM

First, see:

T356324: Adopt the Wikimini ashley's skin (at least in testing-Wikimini)

ashley mentioned this in T355744: The Swedish Wikimini animation is not working correctly.Mar 25 2024, 10:23 AM
ValerioBoz-WMCH added a subtask: T356324: Adopt the Wikimini ashley's skin (at least in testing-Wikimini).Jul 25 2024, 10:31 AM
Seb35 added subscribers: ashley, Seb35.Mar 27 2025, 10:15 AM

I also saw one time this error in upgrade 1.39 with @ashley’s skin (after fixing another JS error, see T356324#10680784), so I’m afraid the upgrade will not fix it. Also, this JS was created with Google Swiffy that produced minified JS and this original tool is no more available, so instead of trying to solve this issue (and possibly others), I would recommend to rewrite the header in plain human-understandable JS (I know it’s a balance in terms of short-term/long-term costs).

valerio.bozzolan removed a subtask: T356324: Adopt the Wikimini ashley's skin (at least in testing-Wikimini).Mar 27 2025, 1:41 PM
ValerioBoz-WMCH added a comment.Mar 27 2025, 1:42 PM

Thanks. I 100% agree with you Seb.

T390195: Rewrite Wikimini's iconic top swiffy animation - to fix JavaScript and be responsive

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