mathjs | An extensive math library for JavaScript and Nodejs | Math library

Looking at the library's npm page, I think you need to use a named import, not the default one:

You could instead simply replace the trig function implementations with versions that use degrees...

Look at the angle configuration example in the MathJS docs. You can use the math.import function to provide your own function implementations for sin, cos, etc., and you can refer to the original ones by first saving a reference to them.

Here is the full example from the linked docs as runnable snippet (copyright © 2013-2021 jos de jong):

Your package.json has a mix of dev dependencies with versions that start with ~ and ones that start with ^. That's probably because some dev dependencies were installed with older versions of npm that defaulted to ~ which is more conservative than ^. As a first step, change the 8 ~ versions to ^, remove node_modules and (if it exists) package-lock.json and run npm install again. I tested this locally and it didn't reduce the number of vulnerabilities reported by npm audit but it did reduce the number of outdated packages which is a step in the right direction.

Let's simplify things by only looking at the audit results for your production dependencies and ignoring (at least for the moment) issues in your dev dependencies. npm audit --only=prod reports only 5 issues, all moderate. Running npm audit --only=prod --force fix updates @capacitor/cli from 2.x to 3.x. That's a breaking change so you'll want to test it, but if that works for you, congratulations because npm audit --only=prod reports no vulnerabilities.

At this point, you could possibly choose not to worry much about the other issues reported by npm audit. However if you wanted to fix them, here is the potentially tedious/arduous path I'd recommend:

• Do a manual audit of all of your dev dependencies to make sure you aren't including things you don't need. Maybe you have things that are installed that you aren't using. Uninstall them. Maybe you have things installed that are nice-to-have but you don't really need. Consider uninstalling them too.
• Run npm outdated to see what could be manually updated via a breaking change. Try doing those updates.

in main.js import all as math then add it as global property :

You have to change message.channel.send(embeds) to:

message.channel.send({ embeds: [embed] })

If you want to use just fraction you can use:

As stated by the comment of @JHeth: I added await tick(), made the function async and it worked.

• This approcah makes a row reduction of the matrix, and gives as a result an string with the unknown values. In case the system has infinite resolutions, this would returns simplified equations so you can parameterize later.

EDIT : Independent terms are in the last column of the array.

The use of KaTeX is suppported in the last few nightly builds and will be supported officially in the next release 1.2.4+. To enable it, the KaTeX library has to be included. Here is a small example: