Check intersections in method names of Rails helpers

helpers_methods.rb

# frozen_string_literal: true
# You would to run `HelpersMethods.new.call` as Rails class from rails console

class HelpersMethods
  def call
    helper_files = Dir.glob(Rails.root.join('app/helpers/**/*.rb'))
    helpers_methods = {}
    intersections = {}

    helper_files.each do |file_name|
      helper_name = file_name.sub(/^.+app\/helpers\//, '').sub(/\.rb$/, '').camelize
      helper_module = helper_name.constantize
      helper_methods = helper_module.instance_methods(false) | helper_module.private_instance_methods(false)
      helpers_methods[helper_name] = helper_methods
    end

    helpers_methods.each_key do |helper_name|
      (helpers_methods.keys - [helper_name]).each do |compared_helper_name|
        next if intersections.key?(compared_helper_name)

        intersected_methods = helpers_methods[helper_name] & helpers_methods[compared_helper_name]
        next if intersected_methods.blank?

        intersections[helper_name] ||= {}
        intersections[helper_name][compared_helper_name] = intersected_methods
      end
    end

    ap intersections
  end
end