You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: base.rb
    path of file: ./repos/opal/opal/corelib/pattern_matching
    
    the code of the file until where you have to start completion: class ::Array
  def deconstruct
    self
  end
end

class ::Hash
  def deconstruct_keys(_)
    self
  end
end

class ::Struct
  alias deconstruct to_a
  # This function is specified in a very weird way...
  def deconstr
    
  def deconstruct_keys(keys)
    return to_h if keys.nil?
    ::Kernel.raise ::TypeError, 'expected Array or nil' unless ::Array === keys
    return {} if keys.length > values.length
    out = {}
    keys.each do |key|
      should_break = case key
                     when ::Integer
                       values.length < key
                     when ::Symbol # Or String? Doesn't matter, we're in Opal.
                       !members.include?(key)
                     end
      break if should_break
      out[key] = self[key]
    end