Specifcation of property descriptors of Temporal.___ is missing

[ptomato]

In Section 1.2, Constructor Properties of the Temporal Object, we refer to other sections to describe the value of properties such as Temporal.Instant. However, we never specify what attributes those properties should have.

I believe it would be usual for these properties to have the attributes [[Writable]]: true, [[Enumerable]]: false, [[Configurable]]: true, and there are already test262 tests that assume this.

I'm not sure whether this would be an editorial change since it is fixing an omission in the spec, or a normative change because implementations might already have made their own decision. Due to the presence of the test262 test it's probably unlikely that implementations decided something different.

[justingrant]

What about the attributes of static methods on Temporal types?

[ljharb]

Those should have a default, like the static methods on Array and Promise etc.

[justingrant]

@ljharb - Could you clarify what you mean by "default"? Are you saying that there's already a default property descriptor in the 262 spec for builtin objects' static methods, and Temporal objects should use it unless noted otherwise? Or are you saying that the Temporal spec should include a default descriptor somewhere that should apply to all static methods? Or do you mean something else?

[ljharb]

The former. See https://tc39.es/ecma262/#sec-ecmascript-standard-built-in-objects:

Every other data property described in clauses 19 through 28 and in Annex B.2 has the attributes { [[Writable]]: true, [[Enumerable]]: false, [[Configurable]]: true } unless otherwise specified.

[Ms2ger]

@ljharb would you say this issue can be closed no change, then?

[ljharb]

Yes.