fixes

script.js

@@ -73,14 +73,13 @@ document.addEventListener("DOMContentLoaded", function() {
         drawVisibleNodes();
     })
 
-    function getScriptNames(node, namesSet = new Set()) {
+    function getScriptNames(node, namesSet = new Set('x')) {
         if (!node)
             return namesSet;
         if (node.scripts.length > 0) {
             for(const script of node.scripts)
                 namesSet.add(script);
-        } else
-            namesSet.add('x');
+        }
         if (node.children) {
             node.children.forEach(child => getScriptNames(child, namesSet));
         }
@@ -134,14 +133,13 @@ document.addEventListener("DOMContentLoaded", function() {
         });
     }
 
-    function getTokenizerNames(node, namesSet = new Set()) {
+    function getTokenizerNames(node, namesSet = new Set('x')) {
         if (!node)
             return namesSet;
         if (node.tokenizers) {
             for(const [script, tokenizer] of Object.entries(node.tokenizers))
                 namesSet.add(tokenizer.original_lang_name);
-        } else
-            namesSet.add('x')
+        }
         if (node.children) {
             node.children.forEach(child => getTokenizerNames(child, namesSet));
         }
@@ -319,7 +317,9 @@ document.addEventListener("DOMContentLoaded", function() {
                     .map(child => filterHierarchy(child, expandedNodes.has(node.id), depth + 1))
                     .filter(child => child !== null);
 
-            const shouldBeShown = selectedTokenizers.some(tok => (node.tokenizers ? Object.values(node.tokenizers).map(x => x.original_lang_name) : ['x']).includes(tok)) && selectedScripts.some(scr => (node.scripts.length ? node.scripts : ['x']).includes(scr) && (node.scripts.length > 0 || showNonGlotlid));  // if one of the leaves has this tokenizer and the selected scripts
+            const shouldBeShown = selectedTokenizers.some(tok => (Object.keys(node.tokenizers).length > 0 ? Object.values(node.tokenizers).map(x => x.original_lang_name) : ['x']).includes(tok)) &&
+                selectedScripts.some(scr => (node.scripts.length ? node.scripts : ['x']).includes(scr) && (node.scripts.length > 0 || showNonGlotlid));  // if one of the leaves has this tokenizer and the selected scripts
+
             if (!parentExpanded && filteredChildren.length === 0 && !(node.children.length === 0 && shouldBeShown) && node.id != 0)
                 return null;