How does npmsearch.com do sorting?

[pketh]

The closest I've been able to get is with sort=rating:desc
http://npmsearch.com/query?q=async&fields=name,description,version,keywords,homepage&size=15&sort=rating:desc, but if you compare the results with http://npmsearch.com/?q=async, the site search returns much better results.

How are searches sorted by the site?
Thanks

[pketh]

It seems like keywords are being weighted more than the actual package name?

[pketh]

in server.js I see the request body is

  var body = {
    fields: ['name','description','keywords','author','modified','homepage','version','license','rating'],
    query: search,
    sort: [{'rating' : "desc"}],
    highlight: {
      fields: {
        description : {}
      }
    }
  };

but I'm not seeing the difference still