class RuboCop::Cop::Style::EmptyLiteral

def autocorrect(node)
  name = case node
         when ARRAY_NODE
           '[]'
         when HASH_NODE
           # `some_method {}` is not same as `some_method Hash.new`
           # because the braces are interpreted as a block, so we avoid
           # the correction. Parentheses around the arguments would
           # solve the problem, but we let the user add those manually.
           return if first_arg_in_method_call_without_parentheses?(node)
           '{}'
         when STR_NODE
           if enforce_double_quotes?
             '""'
           else
             "''"
           end
         end
  ->(corrector) { corrector.replace(node.source_range, name) }
end