bug caused by getElementById type

[missannil]

const dom: Domhandler.Document = htmlparser2.parseDocument(wxmlText, {
xmlMode: true,
});
In I use domUtils. GetElementsByTagName (' tagName, dom), I can pass in the dom, and get the expected element
In domUtils.getElementsById('eleId',dom), the ts type allows me to pass in the dom, but it doesn't get the correct result (null).

Found in the getElementsByTagName source code first made an 'isTag' judgment on the passed parameter (dom), which caused the dom to not enter the subsequent logic, because the dom tag is' root '.
This is obviously confusing, and hopefully ts will be more rigorous about the types of parameters passed in.

I now use domUtils.getElementsById('eleId',dom.children) as such.