Hi all, I guess the "map" is going to be changed to "emit". But I think I better choice would be "sow": One *sow* something in the function, then the main.js can *reap* them. function (doc) { map(null, doc); } BTW, couch_server:all_databases() does not work well on Windows, because it's file/directory name are not case-sensitive. Could I submit some update for this?