This examples looks like it covers a large number of cases:

      extractValues('John Doe <john@example.com> (http://example.com)', '{name} <{email}> ({url})')
    >> {'name': 'John Doe', 'email': 'john@example.com', 'url': 'http://example.com' }

What kinds of problems would you run into vs using regex? My thoughts were that you lose some control of your matches.