| Summary: | [MutationObservers] Log some warning or error to the console if WebKitMutationObserver.observe is called with unknown dictionary keys | ||||||||
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| Product: | WebKit | Reporter: | Rafael Weinstein <rafaelw> | ||||||
| Component: | DOM | Assignee: | Adam Klein <adamk> | ||||||
| Status: | RESOLVED WONTFIX | ||||||||
| Severity: | Normal | CC: | adamk, arv, darin, ojan, rniwa, sam | ||||||
| Priority: | P2 | ||||||||
| Version: | 528+ (Nightly build) | ||||||||
| Hardware: | Unspecified | ||||||||
| OS: | Unspecified | ||||||||
| Bug Depends on: | |||||||||
| Bug Blocks: | 68729 | ||||||||
| Attachments: |
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Created attachment 118611 [details]
Patch
No tests yet, and I'm not sure if I still should be using OptionsObject. Created attachment 118634 [details]
Patch
After discussion with Ojan & Arv, we've agreed that we probably don't want to do this, since it's not an error to pass unknown options (e.g., future additions to the spec). |
I just spent an hour debugging and finally realized that my script was calling observer.observe(myNode, { childList: true, subtreee: true }) -- note "subtreee". This style of DOM API (options bag) is somewhat new to DOM. From talking with Anne & Adam, we can make it a script error to use an unsupported dictionary key, but we can consider issuing a warning to the console.