Introduce mathjax v4

modules/base/latex.mjs

@@ -1059,8 +1059,7 @@
        displayIndent: '0',            // default for indentshift when set to 'auto'
        fontCache: 'local',            // or 'global' or 'none'
        localID: null,                 // ID to use for local font cache (for single equation processing)
-       internalSpeechTitles: true,    // insert <title> tags with speech content
-       titleID: 0                     // initial id number to use for aria-labeledby titles
+       blacker: 3                     // the stroke-width to use for SVG character paths
    };
 
    if (!isNodeJs()) {
@@ -1085,12 +1084,12 @@
          }
       };
 
-      let mj_dir = '../mathjax/3.2.0';
+      let mj_dir = '../mathjax/4.0.0';
       if (browser.webwindow && source_dir.indexOf('https://root.cern/js') < 0 && source_dir.indexOf('https://jsroot.gsi.de') < 0)
          mj_dir = 'mathjax';
 
-      return loadScript(source_dir + mj_dir + '/es5/tex-svg.js')
-               .catch(() => loadScript('https://cdn.jsdelivr.net/npm/mathjax@3.2.0/es5/tex-svg.js'))
+      return loadScript(source_dir + mj_dir + '/tex-svg.js')
+               .catch(() => loadScript('https://cdn.jsdelivr.net/npm/mathjax@4/tex-svg.js'))
                .then(() => promise);
    }
 
@@ -1509,7 +1508,7 @@
   * @private */
 async function produceMathjax(painter, mj_node, arg) {
    const mtext = translateMath(arg.text, arg.latex, arg.color, painter),
-         options = { em: arg.font.size, ex: arg.font.size/2, family: arg.font.name, scale: 1, containerWidth: -1, lineWidth: 100000 };
+         options = { em: arg.font.size, ex: arg.font.size/2, family: arg.font.name, scale: 1, containerWidth: -1 /*, lineWidth: 100000 */ };
 
    return loadMathjax()
           .then(mj => mj.tex2svgPromise(mtext, options))

package.json

@@ -60,7 +60,7 @@
     "@oneidentity/zstd-js": "^1.0.3",
     "canvas": "^3.1.0",
     "jsdom": "^26.1.0",
-    "mathjax": "3.2.2",
+    "mathjax": "4.0.0",
     "tmp": "^0.2.4",
     "xhr2": "^0.2.1",
     "three": "0.162.0"