class RuboCop::Cop::RSpec::ScatteredLet

def check_let_declarations(body)
  lets = body.each_child_node.select { |node| let?(node) }
  first_let = lets.first
  lets.each_with_index do |node, idx|
    next if node.sibling_index == first_let.sibling_index + idx
    add_offense(node) do |corrector|
      RuboCop::RSpec::Corrector::MoveNode.new(
        node, corrector, processed_source
      ).move_after(first_let)
    end
  end
end