Imports oss.terrastruct.com/d2/d2ast oss.terrastruct.com/d2/d2format oss.terrastruct.com/d2/d2graph oss.terrastruct.com/d2/d2parser oss.terrastruct.com/d2/d2themes oss.terrastruct.com/d2/d2themes/d2themescatalog oss.terrastruct.com/util-go/go2 Standard library imports errors fmt io/fs os path strconv strings