Revert "added fast-xml-parser for testing"

This reverts commit 15ac52b6a0.

src/xml.ts

@@ -3,11 +3,6 @@
  * @param {string} xml - The XML string to parse
  * @returns {Object} An object with `tag`, `attributes`, and `children` properties
  */
-/**
- * Parses an XML string into a structured JavaScript object (fast-xml-parser style).
- * @param {string} xml - The XML string to parse
- * @returns {Object} An object matching fast-xml-parser output format
- */
 export function fromXml(xml: string) {
 	xml = xml.trim();
 	let pos = 0;
@@ -33,7 +28,7 @@ export function fromXml(xml: string) {
 
 		if(xml[pos] === '/' && xml[pos + 1] === '>') {
 			pos += 2; // skip />
-			return { [tagName]: Object.keys(attributes).length > 0 ? { '@_': attributes } : '' };
+			return { tag: tagName, attributes, children: [] };
 		}
 
 		pos++; // skip >
@@ -50,54 +45,17 @@ export function fromXml(xml: string) {
 			const child = parseNode();
 			if(child) children.push(child);
 		}
-
-		// Build fast-xml-parser style output
-		const result: any = {};
-
-		// Add attributes with @_ prefix
-		if(Object.keys(attributes).length > 0) {
-			for(const [key, value] of Object.entries(attributes)) {
-				result[`@_${key}`] = value;
-			}
-		}
-
-		// Process children
-		if(children.length === 1 && typeof children[0] === 'string') {
-			// Single text node
-			if(Object.keys(attributes).length > 0) {
-				result['#text'] = children[0];
-				return { [tagName]: result };
-			}
-			return { [tagName]: children[0] };
-		}
-
-		// Group children by tag name
-		for(const child of children) {
-			if(typeof child === 'string') {
-				result['#text'] = child;
-			} else {
-				for(const [childTag, childValue] of Object.entries(child)) {
-					if(result[childTag]) {
-						if(!Array.isArray(result[childTag])) {
-							result[childTag] = [result[childTag]];
-						}
-						result[childTag].push(childValue);
-					} else {
-						result[childTag] = childValue;
-					}
-				}
-			}
-		}
-
-		return { [tagName]: Object.keys(result).length > 0 ? result : '' };
+		return { tag: tagName, attributes, children };
 	}
 
+	/** Parses and returns the tag name at the current position */
 	function parseTagName() {
 		let name = '';
 		while (pos < xml.length && /[a-zA-Z0-9_:-]/.test(xml[pos])) name += xml[pos++];
 		return name;
 	}
 
+	/** Parses and returns an object containing all attributes at the current position */
 	function parseAttributes() {
 		const attrs: any = {};
 		while (pos < xml.length) {
@@ -118,6 +76,7 @@ export function fromXml(xml: string) {
 		return attrs;
 	}
 
+	/** Parses and returns text content, or null if empty */
 	function parseText() {
 		let text = '';
 		while (pos < xml.length && xml[pos] !== '<') text += xml[pos++];
@@ -125,16 +84,19 @@ export function fromXml(xml: string) {
 		return text ? escapeXml(text, true) : null;
 	}
 
+	/** Skips over XML declaration (<?xml ... ?>) */
 	function parseDeclaration() {
 		while (xml[pos] !== '>') pos++;
 		pos++;
 	}
 
+	/** Skips over XML comments (<!-- ... -->) */
 	function parseComment() {
 		while (!(xml[pos] === '-' && xml[pos + 1] === '-' && xml[pos + 2] === '>')) pos++;
 		pos += 3;
 	}
 
+	/** Advances position past any whitespace characters */
 	function skipWhitespace() {
 		while (pos < xml.length && /\s/.test(xml[pos])) pos++;
 	}