xslt-ts

XSLT library

XSLT 1.0 implementation for browser and Node.js environment based on xpath-ts library.

Requirements

• Node v11.x or greater

Release Notes

See CHANGELOG.md

Usage

Install with npm:

npm install xslt-ts

This library is xml engine agnostic but I recommend to use xmldom-ts, xmldom or jsdom

npm install xmldom-ts

or

npm install xmldom

or

npm install jsdom

simple usage:

import { DOMImplementationImpl, DOMParserImpl, XMLSerializerImpl } from 'xmldom-ts';
import { install, xsltProcess, xmlParse } from 'xslt-ts';
 
// xmlString: string of xml file contents
// xsltString: string of xslt file contents
// outXmlString: output xml string.
install(new DOMParserImpl(), new XMLSerializerImpl(), new DOMImplementationImpl());
const outXmlString = xsltProcess(xmlParse(xmlString), xmlParse(xsltString));

another type of usage:

import { DOMImplementationImpl, DOMParserImpl, XMLSerializerImpl } from 'xmldom-ts';
import { install, XSLTProcessor } from 'xslt-ts';
 
// xmlString: string of xml file contents
// xsltString: string of xslt file contents
// output: output DOM model
install(new DOMParserImpl(), new XMLSerializerImpl(), new DOMImplementationImpl());
const processor = new XSLTProcessorImpl();
 
processor.importStylesheet(xmlParse(xsltString));
const output = processor.transformToDocument(xmlParse(xmlString));

Introduction

This library contains an implementation of XSLT in TypeScript. Because XSLT uses XPath, it uses compatible XPath implementation xpath-ts which can be used independently of XSLT. This implementation has the advantage that it makes XSLT uniformly available whenever the browser's native XSLTProcessor() is not available such as in node.js or in web workers.

XSLT-processor builds on Google's AJAXSLT which was written before XSLTProcessor() became available in browsers, but the code base has been updated to comply with ES2015+ and to make it work outside of browsers.

This implementation of XSLT operates at the DOM level on its input documents. It internally uses a DOM implementation to create the output document, but usually returns the output document as text stream. The DOM to construct the output document must be supplied by the application. xmldom and jsdom are tested.

Conformance

A few features that are required by the XSLT and XPath standards were left out (but patches to add them are welcome). See our TODO for a list of missing features that we are aware of (please add more items by means of PRs).

Issues are also marked in the source code using throw-statements.

The implementation is all agnostic about namespaces. It just expects XSLT elements to have tags that carry the xsl: prefix, but we disregard all namespace declaration for them.

Developing and Testing

Download

git clone 'https://github.com/backslash47/xslt-ts'
cd xslt-ts

Install

npm install

Build

npm run build

You will get the transpiled code under '/dist/lib' and typings under '/dist/types'.

Test

Run standard tests with Mocha + Chai testing framework

npm test

Authors

• Google Inc. - Initial work ajaxslt project
• Johannes Wilm - ES2015+ rewrite Fiduswriter
• Matus Zamborsky - TypeScript rewrite - Backslash47

References

• XPath Specification http://www.w3.org/TR/1999/REC-xpath-19991116

• XSLT Specification http://www.w3.org/TR/1999/REC-xslt-19991116

• W3C DOM Level 3 Core Specification http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407/

• ECMAScript Language Specification http://www.ecma-international.org/publications/standards/Ecma-262.htm

Licence

The original sources of ajaxslt projects are licenced under BSD-3 clause AJAXSLT-LICENCE.md. Modification made after are licenced with GNU Lesser General Public License v3.0 - see the LICENCE.md file for details.