class RuboCop::Cop::Style::RedundantConstantBase

Avoid redundant ‘::` prefix on constant.

How Ruby searches constant is a bit complicated, and it can often be difficult to understand from the code whether the ‘::` is intended or not. Where `Module.nesting` is empty, there is no need to prepend `::`, so it would be nice to consistently avoid such meaningless `::` prefix to avoid confusion.

NOTE: This cop is disabled if ‘Lint/ConstantResolution` cop is enabled to prevent conflicting rules. Because it respects user configurations that want to enable `Lint/ConstantResolution` cop which is disabled by default.

@example

# bad
::Const

# good
Const

# bad
class << self
  ::Const
end

# good
class << self
  Const
end

# good
class A
  ::Const
end

# good
module A
  ::Const
end