Provides a way to perform Ruby `require` statements at the file (really the block) level

file_scope.rb

require 'find'

def provide(*requires, &block)
  modules = requires.map do |req|
    Module.new do
      file_fragment = "#{req}.rb"

      file = Find.find(*($: + ['.'])) do |f|
        break f if f =~ /#{file_fragment}\z/
      end

      module_eval(File.read("#{req}.rb"))
    end
  end

  runner = Module.new
  runner.module_exec(*modules, &block)
end

provide('my_class') do |my_class|
  my_class::MyClass.new.print
end

MyClass  # => should raise an error

my_class.rb

class MyClass
  def print
    puts 'hello world'
  end
end