https://github.com/webcompat/web-bugs/issues/23877 reports that parkrun.com is broken because we *have* these APIs still (they have a polyfill and some other methods that are defined on the prototype of SVGPathSegList, but only if SVGPathSegList doesn't exist.
Bug 1388931 Comment 37 Edit History
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https://github.com/webcompat/web-bugs/issues/23877 reports that parkrun.com is broken because we have parts of these APIs still (they have a polyfill and some other methods that are defined on the prototype of SVGPathSegList, but only if SVGPathSegList doesn't exist.