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-rw-r--r--geschichte/plugin/math/mathjax3.js77
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diff --git a/geschichte/plugin/math/mathjax3.js b/geschichte/plugin/math/mathjax3.js
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--- a/geschichte/plugin/math/mathjax3.js
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-/**
- * A plugin which enables rendering of math equations inside
- * of reveal.js slides. Essentially a thin wrapper for MathJax 3
- *
- * @author Hakim El Hattab
- * @author Gerhard Burger
- */
-export const MathJax3 = () => {
-
-    // The reveal.js instance this plugin is attached to
-    let deck;
-
-    let defaultOptions = {
-        tex: {
-            inlineMath: [ [ '$', '$' ], [ '\\(', '\\)' ]  ]
-        },
-        options: {
-            skipHtmlTags: [ 'script', 'noscript', 'style', 'textarea', 'pre' ]
-        },
-        startup: {
-            ready: () => {
-                MathJax.startup.defaultReady();
-                MathJax.startup.promise.then(() => {
-                    Reveal.layout();
-                });
-            }
-        }
-    };
-
-    function loadScript( url, callback ) {
-
-        let script = document.createElement( 'script' );
-        script.type = "text/javascript"
-        script.id = "MathJax-script"
-        script.src = url;
-        script.async = true
-
-        // Wrapper for callback to make sure it only fires once
-        script.onload = () => {
-            if (typeof callback === 'function') {
-                callback.call();
-                callback = null;
-            }
-        };
-
-        document.head.appendChild( script );
-
-    }
-
-    return {
-        id: 'mathjax3',
-        init: function(reveal) {
-
-            deck = reveal;
-
-            let revealOptions = deck.getConfig().mathjax3 || {};
-            let options = {...defaultOptions, ...revealOptions};
-            options.tex = {...defaultOptions.tex, ...revealOptions.tex}
-            options.options = {...defaultOptions.options, ...revealOptions.options}
-            options.startup = {...defaultOptions.startup, ...revealOptions.startup}
-
-            let url = options.mathjax || 'https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js';
-            options.mathjax = null;
-
-            window.MathJax = options;
-
-            loadScript( url, function() {
-                // Reprocess equations in slides when they turn visible
-                Reveal.addEventListener( 'slidechanged', function( event ) {
-                    MathJax.typeset();
-                } );
-            } );
-
-        }
-    }
-
-};