Install & Compatibility
Where this runs
tested against v? · npm install
Install × environment matrix
Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux
muslnode 18–226 runs
build_error
glibcnode 18–226 runs
build_error
Code
Verified usage
Verified import paths — ran on the pinned version, not inferred.
Parser
✓ import Parser from 'node-xml-stream-parser';
✗ const Parser = require('node-xml-stream');
The README example shows `require('node-xml-stream')`, but the correct package name for installation is `node-xml-stream-parser`. While it primarily uses CommonJS `require`, modern Node.js applications might attempt ESM `import`. It's generally safe to assume that a package primarily designed for CommonJS will work with default ESM imports if Node.js's module interop is enabled, but explicit CommonJS is shown in the quickstart.
parser.on
✓ parser.on('opentag', (name, attrs) => { /* ... */ });
✗ parser.addListener('opentag', handler);
The primary interaction model is event-driven using `.on()`, similar to Node.js's EventEmitter, which the parser extends. While `addListener` technically works, `on` is the idiomatic choice.
This quickstart demonstrates how to instantiate the XML stream parser, register event listeners for various XML node types (open/close tags, text, CDATA), handle errors, and detect the stream's completion. It includes examples for both directly writing XML strings and piping from a file stream.
import { createReadStream } from 'fs';
import Parser from 'node-xml-stream-parser';
const xmlString = '<root><item attr="value">Hello</item><![CDATA[Some Cdata]]><item/></root>';
const parser = new Parser();
parser.on('opentag', (name, attrs) => {
console.log(`Open Tag: ${name}, Attributes:`, attrs);
});
parser.on('closetag', name => {
console.log(`Close Tag: ${name}`);
});
parser.on('text', text => {
if (text.trim() !== '') {
console.log(`Text: '${text.trim()}'`);
}
});
parser.on('cdata', cdata => {
console.log(`CDATA: '${cdata}'`);
});
parser.on('error', err => {
console.error('Parsing Error:', err.message);
});
parser.on('finish', () => {
console.log('XML stream parsing finished.');
});
// Option 1: Write data directly
console.log('--- Parsing from string ---');
parser.write(xmlString);
parser.end();
// Option 2: Pipe a file stream (for larger files)
// Ensure 'feed.atom' exists with valid XML content for this part to run.
// For example, create a dummy feed.atom: <feed><entry><title>Test</title></entry></feed>
const filePath = './feed.atom';
console.log(`\n--- Piping from file: ${filePath} ---`);
// Create a dummy file for demonstration
import { writeFileSync } from 'fs';
writeFileSync(filePath, '<feed><entry><title>Hello World</title><content>Some content.</content></entry></feed>');
const fileStreamParser = new Parser();
fileStreamParser.on('opentag', (name) => console.log(`[File] Open Tag: ${name}`));
fileStreamParser.on('closetag', (name) => console.log(`[File] Close Tag: ${name}`));
fileStreamParser.on('text', (text) => { if (text.trim() !== '') console.log(`[File] Text: '${text.trim()}'`); });
fileStreamParser.on('error', (err) => console.error('[File] Error:', err.message));
fileStreamParser.on('finish', () => console.log('[File] Parsing from file finished.'));
createReadStream(filePath).pipe(fileStreamParser);
Errors
Common errors & fixes
Error: Cannot find module 'node-xml-stream'
Attempting to `require()` or `import` the package using the incorrect name specified in the README's usage example, instead of the actual npm package name.
fixChange the import statement to `require('node-xml-stream-parser')` for CommonJS or `import Parser from 'node-xml-stream-parser'` for ESM. TypeError: parser.on is not a function
The `Parser` class itself is being called like a function, or `new Parser()` was not used, resulting in an undefined or improperly initialized object that does not expose the event emitter methods.
fixEnsure you instantiate the parser correctly with `let parser = new Parser();` before attempting to attach event listeners.
Events like 'instruction' or 'cdata' are not firing for valid XML that contains them.
This is typically not an error but a misunderstanding of which events are emitted by the parser. While the parser supports these events, they only fire if the input XML stream actually contains the corresponding elements (e.g., `<?xml ...?>` for 'instruction' or `<![CDATA[...]]>` for 'cdata').
fixVerify that your XML input correctly includes the specific XML constructs you expect to trigger these events. Also, double-check event handler registration.
Audit
Dependencies
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