Timetable or workaround for namespaced tag names

In my search to manipulate XML on server and browser, I ran into the cheerio lib. With enthusiasm I learned about cheerio and css-select and what it could do for my project ( while avoiding xpath and xslt ).
Sadly I soon hit a wall cause In this example I need to query the mathml tags. But I don't know the namespace beforehand.
It could be any namespace, in this example m: or even mth:

m:

<?xml version="1.0" encoding="utf-8" ?>
<test-assesment xmlns:m="http://www.w3.org/1998/Math/MathML">
  <m:math>
    <m:mo>A</m:mo>
  </m:math>
</test-assesment>

mth:

<?xml version="1.0" encoding="utf-8" ?>
<test-assesment xmlns:mth="http://www.w3.org/1998/Math/MathML">
  <mth:math>
    <mth:mo>A</mth:mo>
  </mth:math>
</test-assesment>

But this selector: $('*|math') is not implemented yet.
"Namespaced tag names are not yet supported by css-select"

Then I tried getting the namespace by querying the xmlns attributes, but I ran into the same problem. I would retreive the namespace which belonged to MathML: 'http://www.w3.org/1998/Math/MathML'. And then use that namespace, wether it would be 'm:' or 'mth:' in my followup query for the elements.
Is there a timetable for namespaced tag names, or did I miss something which can solve my problem.

PRs for are welcome! I don't have any plans to implement this, but would love to support someone that wants to contribute namespace support.

Your best bet is probably to add a custom pseudo-selector, following eg.

css-select/test/api.ts

Lines 168 to 178 in d8d92e3

    
               it("should throw if no parameter is supplied for user-provided pseudo", () => 
        
                   expect(() => 
        
                       CSSselect.compile(":foovalue", { 
        
                           pseudos: { 
        
                               foovalue(_el, data) { 
        
                                   return data != null; 
        
                               }, 
        
                           }, 
        
                       }) 
        
                   ).toThrow("requires an argument")); 
        
           });

Thanks for the reply, If i'll have time I will look into it.
I also found out cheerio does not work in the browser. So thats putting a stop into going this route, still searching to manipulate xml on server and client with the same code and using a jquery like syntax

Cheerio does work in the browser, please file an issue if you encounter an blockers.

	it("should throw if no parameter is supplied for user-provided pseudo", () =>
	expect(() =>
	CSSselect.compile(":foovalue", {
	pseudos: {
	foovalue(_el, data) {
	return data != null;
	},
	},
	})
	).toThrow("requires an argument"));
	});