sinatra-mount.rb

# frozen_string_literal: true

require "sinatra"

module Sinatra
  module Mount
    def mount(app, path = "/#{app.name.downcase}")
      %i(get post put delete patch options).each do |method|
        self.send(method, "#{path}*") do
          app.call(
            env.merge!(
              "SCRIPT_NAME" => path.split("/").last,
              "PATH_INFO"   => params.delete("splat").join("/")
            )
          )
        end
      end
    end
  end

  register Mount
end