StAX-XML - High-Performance JavaScript XML Parser Library

Why Choose StAX-XML for JavaScript XML Parsing?

🚀 High-Performance XML Processing

Benchmarked XML parser optimized for speed and memory efficiency. Outperforms traditional DOM parsers for large XML files. See Performance Benchmarks

🔄 Streaming XML Parser

Memory-efficient stream-based parsing approach. Process XML files of any size without loading entire document into memory. Learn Streaming API

🌐 Universal JavaScript Compatibility

Works seamlessly in Node.js, Bun, Deno, and modern web browsers. Uses Web Standard APIs for maximum compatibility. Installation Guide

📝 TypeScript-First XML Parser

Built with TypeScript, providing comprehensive type definitions and IntelliSense support. Full type safety for XML parsing operations. TypeScript Examples

JavaScript XML Parser Installation

Choose your preferred package manager to install StAX-XML:

# npm - Most popular package manager
npm install stax-xml
 
# yarn - Fast, reliable package manager
yarn add stax-xml
 
# pnpm - Efficient disk space usage
pnpm add stax-xml
 
# bun - Ultra-fast JavaScript runtime
bun add stax-xml
 
# deno - Secure TypeScript runtime
deno add npm:stax-xml

Platform Requirements:

• Node.js 18+
• Modern browsers (ES2020+)
• TypeScript 4.5+ (optional)

→ Complete Installation Guide

XML Parser Quick Start Example

Get started with StAX-XML in seconds. Here’s how to parse XML with streaming support:

import { StaxXmlParser, XmlEventType } from 'stax-xml';
 
// XML content to parse
const xmlContent = '<bookstore><book id="1"><title>JavaScript Guide</title></book></bookstore>';
 
// Create ReadableStream for streaming XML parsing
const stream = new ReadableStream({
 start(controller) {
 controller.enqueue(new TextEncoder().encode(xmlContent));
 controller.close();
 }
});
 
// Parse XML asynchronously with event-driven approach
async function parseXml() {
 const parser = new StaxXmlParser(stream);
 for await (const event of parser) {
 if (event.type === XmlEventType.START_ELEMENT) {
 console.log(`Found element: ${event.name}`);
 }
 }
}
parseXml();

→ More Advanced Examples | → API Documentation

StAX-XML vs Other JavaScript XML Parsers

Unlike traditional XML-to-JSON mappers, StAX-XML provides pull-based parsing that gives you complete control over XML processing:

Key Advantages:

• 🔥 Memory Efficient: Stream large XML files without loading them entirely into memory
• ⚡ High Performance: Faster than DOM-based parsers for large XML documents
• 🎯 Flexible Mapping: Transform XML to any custom data structure, not just JSON
• 🌍 Universal Support: Works in Node.js, Bun, Deno, and all modern browsers
• 📘 TypeScript Ready: Complete type definitions for enhanced developer experience
• 🔧 Namespace Aware: Proper XML namespace handling and entity decoding

Popular Use Cases:

• Large XML File Processing: RSS feeds, XML data exports, configuration files
• Real-time XML Streaming: Live data feeds, server-sent events
• Memory-Constrained Environments: Edge computing, serverless functions
• Custom XML Transformations: Data migration, format conversion

→ Performance Benchmarks | → Frequently Asked Questions