It should be a parse error if a class static method contains a 'super'

[mikesherov]

From https://code.google.com/p/esprima/issues/detail?id=633:

@jeffmo says:

As of the latest version of the spec, it is no longer statically valid to have references to 'super' in static class methods:

https://people.mozilla.org/~jorendorff/es6-draft.html#sec-class-definitions-static-semantics-early-errors

Currently esprima will parse this without issue, but it should through a syntax error.
Clarification: It's only invalid to have super() call in any method...not just static methods.

(this is a recent constraint as of the Jan15 tc39 meeting)
Further clarification: super.whatever (member-expression-ish thing) appears to still be valid

[ariya]

Harmony branch is not developed anymore (#1172).