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Find it a little sad some of the browser APIs are introduced in such an incomplete state the only way to use them is in try/catch blocks – Glenn Jones on twitter
@glennjones are these implementation issues or spec ones? – Tobie Langel on twitter
@tobie just looking at URL and URLUtils the constructor of URL takes 2 arguments to resolve absolute URL, but the early IE version blows up – Glenn Jones on twitter
@glennjones how to ship partial implementations that don't blow-up in devs' faces is something @w3ctag should help implementors with, imho. – Tobie Langel on twitter

@tobie @w3ctag its a hard problem, but when you start to see cross browser code examples like https://developer.mozilla.org/en-US/docs/Web/API/DOMParser… I do start to worry

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@glennjones incidentally, that's why we need more tests. /cc @w3ctag – Tobie Langel on twitter