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Re: [proximity] Behavior of `distance` attribute when sensor cannot provide distance measurements? (#44)

From: Domenic Denicola via GitHub <sysbot+gh@w3.org>
Date: Thu, 08 Apr 2021 15:55:38 +0000
To: public-device-apis-log@w3.org
Message-ID: <issue_comment.created-815941929-1617897337-sysbot+gh@w3.org>
> @domenic, wondering if maybe you could provide us with some guidance here? Is there precedence for returning undefined from an IDL attribute in the manner described above? It might be something we then send up to the API design guidelines.

No, there's no such precedent. Web platform APIs should use null, not undefined, for this. (Or a similar sentinel value such as positive infinity.)

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