module Jekyll::Algolia::Utils

def self.jsonify(item)

a unique identifier once serialized.
but will try to stringify other objects, excluding the one that contain
It will keep any string, number, boolean,boolean,array or nested object,

item - The object to convert

JSON, to be stored as a record
Public: Convert an object into an object that can easily be converted to 
def self.jsonify(item)
  simple_types = [
    NilClass,
    TrueClass, FalseClass,
    Integer, Float,
    String
  ]
  # Integer arrived in Ruby 2.4. Before that it was Fixnum and Bignum
  if Gem::Version.new(RUBY_VERSION) < Gem::Version.new('2.4.0')
    # rubocop:disable Lint/UnifiedInteger
    simple_types += [Fixnum, Bignum]
    # rubocop:enable Lint/UnifiedInteger
  end
  return item if simple_types.member?(item.class)
  # Recursive types
  return item.map { |value| jsonify(value) } if item.is_a?(Array)
  if item.is_a?(Hash)
    return item.map { |key, value| [key, jsonify(value)] }.to_h
  end
  # Can't be stringified, discard it
  return nil unless item.respond_to?(:to_s)
  # Discard also if is a serialized version with unique identifier
  stringified = item.to_s
  return nil if match?(stringified, /#<[^ ].*@[0-9]* .*>/)
  stringified
end