module.exports := (String) => {
    adapter:  String,
    host:     String?,
    port:     String?,
    database: String?,
    user:     String?,
    password: String?
}

Turn a string database URL into an object. This differs from a plain require('url').parse(...) in that it understands some conventions around different database drivers and query-string parameters can override those found earlier in the URL. (e.g. user=foo in the query string overrides a bar@host in the URL.

2-clause BSD