The numerous MathML polyfills can be used as one standard tool that processes all MathML elements
so that they become MathML-core compatible. This is done by the functions referenced from
_MathMLTransforms at load time and any time the scripts ask.
By default, the script or module processes all math elements in the web-page upload
load of the page. Should you want to disable this, define before the inclusion or imports,
window.doNotRunTransformsOnPageLoad = true.
Go to the rollup folder and invoke: npm install then invoke npm run build.
Or, if you have installed rollup globally, you can invoke ./rollup-polyfills.
This will create the files allpolyfillsbundle-module.js and allpolyfillsbundle-script.js
in this directory.
The packaging in all forms is tested in the folder test-rollupwraps.
You can copy the file allpolyfillsbundle-script.js to your js directory and
use the MathML polyfills in HTML with an element such as <script src="js/allpolyfillsbundle-script.js"></script>.
For those who want to avoid copying, you can use the github-pages version
<script src="https://w3c.github.io/mathml-polyfills/rollup/allpolyfillsbundle-script.js"></script>
But note that the gains or security may not be as you expect (see this page for more).
In a script of type module (supported in all current browsers) you can use MathML polyfills with
import {_MathTransforms} from "./allpolyfillsbundle-module.js".
Add the mathml-polyfills package to your dependencies: From your project,
run npm install --save mathml-polyfills.
You can now refer to the MathML polyfills with the following import
import {_MathTransforms} from "mathml-polyfills"