Private (#) vs Class#prototypeProperty

[stevenvachon]

It causes confusion with things like Array#includes and Array#length.

[ljharb]

That's always been a documentation-only convention, borrowed largely from Ruby - indeed a#b has been conventionally short for a.prototype.b, but that's not a really good argument against all the reasons that class fields need to be own properties.

[stevenvachon]

Maybe we should use $, or _ like C#, then. I still don't like not being able to use private, though.

[ljharb]

Neither of those are syntax; it has to be syntax to be hard-private. Give the private fields FAQ a read.

[littledan]

Yes, this overlap is unfortunate, but I don't see a clear alternative.