class RuboCop::Cop::Style::SlicingWithRange

items[1..]
# good

items[1..-1]
# bad<br>@example<br><br>‘ary` on Ruby 2.6+.
This cop checks that arrays are sliced with endless ranges instead of

def on_send(node) 

def on_send(node)
  return unless node.arguments.count == 1
  return unless range_till_minus_one?(node.arguments.first)
  add_offense(node.first_argument) do |corrector|
    corrector.remove(node.first_argument.end)
  end
end