Bug 162932

Summary: Update DataTransfer.prototype.types to a frozen array that updates on changes
Product: WebKit Reporter: Domenic Denicola <d>
Component: HTML EditingAssignee: Nobody <webkit-unassigned>
Status: NEW ---    
Severity: Normal    
Priority: P2    
Version: Safari Technology Preview   
Hardware: Unspecified   
OS: Unspecified   

Description Domenic Denicola 2016-10-04 13:23:39 PDT
In https://github.com/whatwg/html/issues/11#issuecomment-249155408 we discussed aligning all browsers on a new model for DataTransfer.prototype.types. It has the following changes from WebKit's model:

- Return a FrozenArray, instead of an array
- Keep returning the same object until changes are made, instead of returning a new object each time. (This helps make dataTransfer.types === dataTransfer.types, which is false in Chrome currently.)

The spec pull request is up at https://github.com/whatwg/html/pull/1860, with web platform tests (unfortunately manual) available at https://github.com/w3c/web-platform-tests/pull/3871