Status: Untriaged
Owner: ----
New issue 4386 by [email protected]: Make Object.observe accept options as
per specs; support skipRecords option
https://code.google.com/p/v8/issues/detail?id=4386
Version: 4.6.77
According to the specs:
http://arv.github.io/ecmascript-object-observe/#Object.observe
`Object.observe` should accept a plain object as its third parameter, where
options `acceptList` and `skipRecords` can be defined, defaulting to
`[ "add", "update", "delete", "reconfigure", "setPrototype", "preventExtensions"
]` and `false` respectively.
Currently, `Object.observe` uses the third parameter merely as the
`acceptList` option.
On a related note, `Object.observe` should support the `skipRecords`
option, and `Object.deliverChangeRecords` should return a boolean that
reports if records have actually been appended on the handler's list (even
when they're `undefined` values due to `skipRecords` being true):
http://arv.github.io/ecmascript-object-observe/#DeliverChangeRecords
In order to ease the transition to this breaking change, I suggest making
O.o accept both kind of parameter, using it as an accept list if it's an
array-like object and prompting a deprecation notice in the meanwhile.
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