"opener" setter says to return things, but setters can't return stuff

[bzbarsky]

https://html.spec.whatwg.org/multipage/browsers.html#dom-opener setter step 2 says:

Return the result of calling OrdinaryDefineOwnProperty....

but it's a setter; it can't return anything.

[domenic]

This section is written in JavaScript style, where you return completion records (unless you use ! or ?). So if OrdinaryDefineOwnProperty returns an abrupt completion, this will too.

[bzbarsky]

Hmm. That was totally non-obvious, but OK.

[bzbarsky]

In particular, what does "rethrow any exceptions" mean, then? In a context where completion records are the return type there are no "exceptions".

[domenic]

Yeah, that's pretty silly, you're right. It's straddling two styles. Probably simplest to update to say "Perform" instead of "Return the result of calling".