require 'json'

all_chars = {}

Dir['**/*.md'].each do |file|
  character_data = IO.read(file).each_char.each_with_object(Hash.new(0)) do |word, counts|
    counts[word] += 1
  end

  all_chars.merge!(character_data) do |_, oldval, newval|
    oldval + newval
  end
end

puts all_chars.to_json