From humble beginnings at an MSP, I've adventured through life as a sysadmin, into an engineer, and finally landed as a developer focused on fixing problems with automation.
May be a long argument but it's not two nulls, it's a null (defined) and an undefined. They have usefully different meanings and usages. Saying it's two nulls is a bit like saying that zero and null are the same because they both mean "nothing".
Probably that ?? only cares about undefined properties, not null or zero or empty string etc.
It's called nullish for a reason. Because for some reason, JS thought two nulls would be a good idea.
May be a long argument but it's not two nulls, it's a null (defined) and an undefined. They have usefully different meanings and usages. Saying it's two nulls is a bit like saying that zero and null are the same because they both mean "nothing".
I would have to agree with you, however in the wild most code I've seen misinterprets this and there is mixed usage of both all over the place..
And everybody is true here :)
I try to use
undefinedas much as I can instead ofnull.But some frameworks want you to use
null.