Bug #5066: Element.localName is not implemented in saxon-js 2.3 - SaxonJS - Saxonica Developer Community

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Bug #5066

closed

Element.localName is not implemented in saxon-js 2.3

Added by Michael Gunter 9 months ago. Updated 13 days ago.

Status:

Closed

Priority:

Low

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Category:

Sprint/Milestone:

Start date:

2021-08-21

Due date:

% Done:

100%

Estimated time:

Applies to JS Branch:

Fix Committed on JS Branch:

2, Trunk

Fixed in JS Release:

SaxonJS 2.4

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Description

I am currently using saxon-js 2.0.3, and my project runs without issues. I am trying to upgrade to 2.3, but I have encountered what I believe is a bug. It can be demonstrated as follows.

import saxon from "saxon-js";

const text = "<index>\
    <entry name='A' />\
    <entry name='B' />\
    <entry name='C' />\
</index>";

saxon.getResource({ text, type: "xml" })
.then(document => {

    const elements = saxon.XPath.evaluate("entry", document.documentElement);

    for (const element of elements) {
        console.log(element.localName); // this prints "entry" on 2.0.3, but prints "undefined" on 2.3
    }

});

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Updated by Michael Gunter 9 months ago

The example can be further reduced to the following.

import saxon from "saxon-js";

saxon.getResource({ text: "<data />", type: "xml" })
.then(document => {

    console.log(document.documentElement.localName); // this prints "data" on 2.0.3, but prints "undefined" on 2.3

});

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Updated by Michael Gunter 9 months ago

The issue appears to have been introduced in version 2.1.

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Updated by Norm Tovey-Walsh 9 months ago

Thanks for the reproducible case. We'll take a look as soon as possible.

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Updated by Michael Kay 3 months ago

Sorry that we've rather dropped the ball on SaxonJS bug reports.

What puzzles me about this one is that the synchronous equivalent

console.log(saxon.XPath.evaluate("parse-xml('<data/>')").documentElement.localName)

works just fine.

Equally, it works if I do it in stages:

node --experimental-repl-await
>var saxon = require('saxon-js')
>var promise = saxon.getResource({text:"<data/>",type:"xml"})
>var doc = await promise;
>console.log(doc.documentElement.localName)

So I think there's something wrong with the way you're handling the returned promise.

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