anchor.diff:  
   === Build the Project
   
  -Run the REPL script:
  +Build your project and start the builtin HTTP server:
   
   [source,bash]
   ```
  -clj -m cljs.main -co build.edn -r
  +clj -m cljs.main -co build.edn -c -s
   ```
  +
  +Navigate to http://localhost:9000/index.html.
   
   Click the button. You will see that the `:bar` module gets loaded and the
   function in the other namespace gets invoked.
  
positive.code:             [goog.events :as events]
              [cljs.loader :as loader])
    (:import [goog.events EventType]))
  
  (enable-console-print!)
  
  (println "I'm foo!")
  
  
negative.code: 
  [source,clojure]
  ```
  {:output-dir "out"
   :asset-path "/out"
   :modules {:foo {:entries #{foo.core}
                   :output-to "out/foo.js"}
             :bar {:entries #{bar.core}
                   :output-to "out/bar.js"}}}
  ```
  
  Now make an `index.html` file:
  