chain-example.js

chain
  (addCustomHeaders)
  (errorHandler)
  (deflate)
  (route
    ("/foo", chain(fooApp)()) // the () ends the chain
    (/^\/blog\/(.*)/, chain(funkyBlogApp)()) // the () ends the chain
    (/^\/static\//, chain
      (farFutureExpiresHeader)
      (route
        (/^js\/(.*)\.js$/, chain
          (javascriptHeaders)
          (jsmin)) // no (), so fall through
        (/^css\/(.*)\.css$/, chain
          (cssHeaders)
          (cssmin))))) // no (), so fall through
  (directoryIndex) // if it's a folder, this does 
  (fileServer)
  ()
  .listen(8000); // this starts the server.