Saxon » SaxonJS

I have run into an issue with fn:sort and Saxon-JS 2, when I use <xsl:sequence select="sort(date, (), function($d) { $d })"/> I get an error TypeError: d.compareTo is not a function. Tested with Saxon-JS 2.0 from Saxonica Node.js version v12.18.0.

Sample:

<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    version="3.0"
    xmlns:xs="http://www.w3.org/2001/XMLSchema"
    exclude-result-prefixes="#all"
    expand-text="yes">
    
    <xsl:output method="xml" indent="yes"/>
    
    <xsl:template match="root">
        <xsl:copy>
            <xsl:sequence select="sort(date, (), function($d) { $d })"/>
        </xsl:copy>
    </xsl:template>
    
    <xsl:template match="/" name="xsl:initial-template">
        <xsl:next-match/>
        <xsl:comment xmlns:saxon="http://saxon.sf.net/">Run with {system-property('xsl:product-name')} {system-property('xsl:product-version')} {system-property('Q{http://saxon.sf.net/}platform')}</xsl:comment>
    </xsl:template>
    
</xsl:stylesheet>

Input sample:

<?xml version="1.0" encoding="UTF-8"?>
<root>
    <date>2020-11-03+02:00</date>
    <date>2020-11-01+02:00</date>
    <date>2020-11-02+02:00</date>
    <date>2020-11-05+02:00</date>
    <date>2020-11-04+02:00</date>
    <date>2020-11-06+02:00</date>
</root>

The above is a reduced sample and using the straightforward one argument sort(date) works but in the original sample I needed the three argument form e.g. sort(foo, (), function($f) { $f/bar }) and got the same error.