`super` in class declaration as alias for parent class

[JHawkley]

Similar to the way that @ or this would alias to the class itself in a class declaration (to create static members), I've found, in certain situations, it might be beneficial to have super alias to the class' parent in the same way. Take a look at the following usage example:

# Lets pretend we have a long namespaced class...
class Really.Long.Namespace.Foo
  arr: [1,2,3,4]

# Attempted to use 'super' as an alias for the parent class.
# Fails to compile: "Cannot call super on an anonymous function."
class Bar extends Really.Long.Namespace.Foo
  arr: super::arr.concat [5,6,7,8]

# Works fine when 'super' is replaced with the parent-proper.
# Not very elegant though.
class Baz extends Really.Long.Namespace.Foo
  arr: Really.Long.Namespace.Foo::arr.concat [5,6,7,8]

In the example, I desire to bring in values from the parent class' prototype of arr and concatenate them with additional values for use by the child class' version of arr. A very weird way of inheriting array values, I know, but I've found a use for it in a library I'm using, which is what brought it up.

This would really only be a minor visual enhancement and convenience. The times this might be useful are few and far between, but I figure I'd throw it out there as a possible enhancement.

[TrevorBurnham]

Hmm. I like the succinctness, but I don't like the inconsistency; everywhere else, super is a function call.

[satyr]

$ coco -e 'class extends (class A then) then console.log super'
{ [Function: A] displayName: 'A' }

[vendethiel]

closing for the same reason as #2638