Fix webpack compatibility

[ento]

Problem:

When webpacked, Markdown.toHtml fails with:

Uncaught ReferenceError: marked is not defined

Clone this repo and follow the readme to see it in action.

Cause:

When webpacked, the whole compiled Elm code is evaluated within a CommonJS environment.

The marked library detects the module object and exports itself as a proper CommonJS module should. As a result, the native Markdown module loses access to a global marked function.

Fix:

Nest the marked library inside our own CommonJS-compatible environment and capture the exported object as a local variable.

var marked = (function() {
  var module = {};
  var exports = module.exports = {};

  // insert marked library here

  return module.exports;
})();

QA

1. The aforementioned project should work
2. Compiling the project through elm-make src/Main.elm --output main.html should work too

[eeue56]

Beautiful! @evancz, this is of interest and looks good.

[evancz]

Thanks @ento! Can you remind me to do a patch release on Monday?

[ento]

@evancz Thanks for the merge && pinging for a patch release :)