class GraphQL::Rubocop::GraphQL::BaseCop

def source_without_keyword_argument(send_node, pair_node)
  # work back to the preceeding comma
  first_pos = pair_node.location.expression.begin_pos
  end_pos = pair_node.location.expression.end_pos
  node_source = send_node.source_range.source
  node_first_pos = send_node.location.expression.begin_pos
  relative_first_pos = first_pos - node_first_pos
  relative_last_pos = end_pos - node_first_pos
  begin_removal_pos = relative_first_pos
  while node_source[begin_removal_pos] != ","
    begin_removal_pos -= 1
    if begin_removal_pos < 1
      raise "Invariant: somehow backtracked to beginning of node looking for a comma (node source: #{node_source.inspect})"
    end
  end
  end_removal_pos = relative_last_pos
  cleaned_node_source = node_source[0...begin_removal_pos] + node_source[end_removal_pos..-1]
  cleaned_node_source
end