msa.js doesn't work with Firefox Nightly 85

[MrTomRod]

Thanks for your great work!

Using Firefox Nightly 85.0a1 (2020-12-09) on http://msa.biojs.net/ I get the following error in my console:

Uncaught TypeError: t.on is not a function
    resetSeqs index.js:58
    e index.js:56
    resetSeqs index.js:59
    t index.js:14
    _loadSeqs msa.js:121
    initialize msa.js:79
    Backbone 3
    <anonymous> norowuvoqo.js:18
index.js:58:9
    resetSeqs index.js:58
    e index.js:56
    resetSeqs index.js:59
    t index.js:14
    _loadSeqs msa.js:121
    initialize msa.js:79
    Backbone 3
    <anonymous> norowuvoqo.js:18

Maybe it's just the a nightly bug, but it could be worth looking into this error before Firefox 85 becomes mainline.

[MrTomRod]

Problem still exists in Firefox 85 and is also present in Firefox 86.

Firefox 85 will be released very soon! (2021-01-26)

Please fix this bug soon, I rely on it!

[MrTomRod]

Still broken on Firefox 90.0 (64-Bit)...

[MrTomRod]

Found a dirty workaround: Simply remove this from msa.js:

t.on("add change reset ",e,this),e.call(this)

[guignonv]

If I may, I think the correct fix is not to comment "t.on("add change reset ",e,this),e.call(this)" but rather turn the "at" into an "on" a few characters before:
if(this.seqs=[],!t instanceof Array||"on"in t) (instead of if(this.seqs=[],!t instanceof Array||"at"in t)).
;-)

[MrTomRod]

Wow, how the hell did you divine this? 🤣 Thanks.

[slimsuite]

Hi, I've also been having problems that alignments have stopped displaying. Does the above fix mean that the tool will become available again soon? It's really useful! (Well done, and thanks!) (I am using it with <script src="https://cdn.bio.sh/msa/latest/msa.min.gz.js"></script>)

[MrTomRod]

I would not count on it - the developer has moved on to other things. Just host an edited version of msa.js yourself. (If you can't, and you trust me, and need a short-term solution, you can use this: <script src="https://opengenomebrowser.bioinformatics.unibe.ch/static/align/js/msa.min.js"></script>)