title: Elm package source code
body: <p>I'd like to see the source code of elm-lang/core that is in use in my project.</p>
  
  <p>My project has:</p>
  
  <pre><code>import Json.Decode exposing (..)
  </code></pre>
  
  <p>Right now elm compiler says</p>
  
  <pre><code>Cannot find variable `Json.Decode.Decoder`.
  `Json.Decode` does not expose `Decoder`. 
  </code></pre>
  
  <p>From <a href="https://github.com/elm-lang/core/blob/master/src/Json/Decode.elm" rel="nofollow noreferrer">github source</a> I can see that it's exposing <code>Decoder</code>. Would like to see if I have the wrong version of Elm or something.</p>
  
  <p>Just in case - my elm-package.json has</p>
  
  <pre><code>"dependencies": {...
      "elm-lang/core": "5.1.1 &lt;= v &lt; 6.0.0",
       ...
  },
  "elm-version": "0.18.0 &lt;= v &lt; 0.19.0"
  </code></pre>