Merge pull request #397 from mathjax/develop

v2.1.0

Author: dpvc

README.md

@@ -11,7 +11,7 @@ npm install mathjax-node
 to install mathjax-node and its dependencies.
 
 **Note:**
-The current version of mathjax-node requires Node.js v6 or later, and uses jsdom version 10.
+The current version of mathjax-node requires Node.js v6 or later, and uses jsdom version 11.
 
 ## Getting started
 
@@ -63,6 +63,7 @@ The `config` method is used to set _global_ configuration options. Its default o
   undefinedCharError: false, // determines whether "unknown characters" (i.e., no glyph in the configured fonts) are saved in the error array
   extensions: '',            // a convenience option to add MathJax extensions
   fontURL: 'https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.2/fonts/HTML-CSS', // for webfont urls in the CSS for HTML output
+  paths: {},                  // configures custom path variables (e.g., for third party extensions, cf. test/config-third-party-extensions.js)
   MathJax: { }               // standard MathJax configuration options, see https://docs.mathjax.org for more detail.
 }
 ```

lib/main.js

@@ -40,6 +40,7 @@ var displayMessages = false;      // don't log Message.Set() calls
 var displayErrors = true;         // show error messages on the console
 var undefinedChar = false;        // unknown characters are not saved in the error array
 var extensions = '';              // no additional extensions used
+var paths = {};                   // additional paths (for third party extensions)
 var fontURL = '';  // location of web fonts for CHTML
 
 var defaults = {
@@ -156,6 +157,11 @@ function ConfigureMathJax() {
     AuthorInit: function () {
       MathJax = window.MathJax;
 
+      // Add custom paths to configuration
+      for (let key in paths) {
+        MathJax.Ajax.config.path[key] = paths[key];
+      }
+
       delete MathJax.Hub.config.styles;               // don't need any styles
       MathJax.Hub.Startup.MenuZoom = function () {};  // don't load menu or zoom code
       MathJax.Extension.MathEvents = {
@@ -324,7 +330,7 @@ function ConfigureMathJax() {
             this.d = this.D = (bbox.height + bbox.y)*scale;
           }
         });
-        
+
         //
         //  Don't have mglyph load images
         //
@@ -480,14 +486,16 @@ function ConfigureMathJax() {
       //
       //  Set up None output jax (for when only MathML output is needed)
       //
-      MathJax.OutputJax.None = MathJax.OutputJax({
-        id: "None",
-        preTranslate: function () {},
-        Translate: function () {},
-        postTranslate: function () {}
+      MathJax.Hub.Register.StartupHook("End Jax", function () {
+        MathJax.OutputJax.None = MathJax.OutputJax({
+          id: "None",
+          preTranslate: function () {},
+          Translate: function () {},
+          postTranslate: function () {}
+        });
+        MathJax.OutputJax.None.loadComplete("jax.js");
+        MathJax.OutputJax.None.Register("jax/mml");
       });
-      MathJax.OutputJax.None.loadComplete("jax.js");
-      MathJax.OutputJax.None.Register("jax/mml");
 
       //
       //  Reset the color extension after `autoload-all`
@@ -515,7 +523,7 @@ function ConfigureMathJax() {
       });
     }
   };
-  
+
   if (extensions) {
     //
     // Parse added extensions list and add to standard ones
@@ -958,6 +966,7 @@ exports.config = function (config) {
   if (config.displayErrors != null)      {displayErrors   = config.displayErrors}
   if (config.undefinedCharError != null) {undefinedChar   = config.undefinedCharError}
   if (config.extensions != null)         {extensions      = config.extensions}
+  if (config.paths != null)              {paths           = config.paths}
   if (config.fontURL != null)            {fontURL         = config.fontURL}
   if (config.MathJax) {
     // strip MathJax config blocks to avoid errors