Updated katex math support to a newer package (markdown-it-texmath)

[TurboSlayer]

Changes:

• Updated to a newer package for KaTeX math (markdown-it-texmath)
• Coincidentally this also implements the idea mentioned in https://github.com/joemccann/dillinger/issues/517#issuecomment-352232792, although this could have been fixed without changing the package - see https://www.npmjs.com/package/markdown-it-math
• Tested on node 18 using a few workarounds (I can document these somewhere if you want - took me ages to figure out 😭)

Documentation ideas:

• Document the math syntax as many people have been requesting for it: https://goessner.github.io/markdown-it-texmath/index.html
• Document workarounds for newer node versions? (as mentioned above)

Notes:

• When deploying please regenerate the css files just in case.

[joemccann]

Can you get node 18 with gulp working?

[TurboSlayer]

Yep, but I used that as a workaround just to get the app working, then reverted the changes so that it wouldn't affect the live version. Basically I used the newer "overrides" setting instead of npm-force-resolutions - see https://stackoverflow.com/a/58394828.

Also, please see if it works on node 10 or whatever version the live service is using as I have not tested that.

[joemccann]

yeah we desperately need to move on from gulp and the old webpack -- I've spent hours trying to update it but to no avail

On Mon, Nov 28, 2022 at 5:46 PM TurboSlayer @.***> wrote:

Yep, but I used that as a workaround just to get the app working, then reverted the changes so that it wouldn't affect the live version. Basically I used the newer "overrides" setting instead of npm-force-resolutions - see https://stackoverflow.com/a/58394828.

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[TurboSlayer]

Yeah that does seem quite daunting. I assume the upgrade/gulp-4 branch is what you’ve got so far?

[joemccann]

Yes

On Mon, Nov 28, 2022 at 18:50 TurboSlayer @.***> wrote:

Yeah that does seem quite daunting. I assume the upgrade/gulp-4 branch is what you’ve got so far?

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[TurboSlayer]

Oh well, I could take a look but I doubt I'd get any further so good luck. Hopefully someone will save us one day...