Removed libxmljs2 (#219)

src/utils.ts

@@ -1,7 +1,34 @@
+import { DOMParser, XMLSerializer, Node } from '@xmldom/xmldom';
+
 export function takeWithRepeats<T>(things:T[], count: number) {
   const result = [];
   for(let i = 0; i < count; i++) {
     result.push(things[i % things.length])
   }
   return result;
-}
+}
+
+function xmlRemoveWhitespaceNodes(node: Node) {
+  let child = node.firstChild;
+  while (child) {
+      const nextSibling = child.nextSibling;
+      if (child.nodeType === 3 && !child.nodeValue?.trim()) {
+          // Remove empty text nodes
+          node.removeChild(child);
+      } else {
+          // Recursively process child nodes
+          xmlRemoveWhitespaceNodes(child);
+      }
+      child = nextSibling;
+  }
+}
+
+export function xmlTidy(xml: string | Node) {
+  const xmlToString = new XMLSerializer().serializeToString
+
+  const xmlString = xml instanceof Node ? xmlToString(xml as any) : xml
+  const doc = new DOMParser().parseFromString(xmlString, 'text/xml') as unknown as Node;
+  xmlRemoveWhitespaceNodes(doc);
+  return xmlToString(doc as any);
+}
+