rack-app mounting/resources

app.rb

require "rack/app"

class App < Rack::App

  require_relative 'app_child'
  require_relative 'app_not_child'

  mount App::Child, to: '/child'
  
  namespace '/affects_mounting_too' do 
    mount App::NotChild, to: '/not_child'
  end 
  
  get '/' do
    'some root endpoint'
  end

end

app_child.rb

class App::Child < App
  namespace '/some' do
    desc 'sample endpoint in subapp1'
    get '/endpoint' do
      'Hello, World!'
    end
  end
end

app_not_child.rb

class App::NotChild < Rack::App

  get do
  end

  post do
  end

  put do
  end

  delete do
  end

end