consonant and vowel count

consonant_and_vowel.rb

require "i18n"

I18n.available_locales = [:en]

def vowels_and_consonants(string)
  string
    .then{|string| transliterate(string)}
    .then{|string| letters(string)}
    .then{|string| vowels_and_consonants_count(string)}
end

def vowels_and_consonants_count(string)
  string_total = string.size
  vowels_count = string.downcase.scan(/[aeiou]/).size
  consonants_count = string_total - vowels_count

  "Vowels: #{vowels_count} and Consonants: #{consonants_count}"
end

def letters(string)
  string.gsub(/[\W]/, '')
end

def transliterate(string)
  I18n.transliterate(string)
end

string = "O período é uma unidade sintática."
vowels_and_consonants(string)