co.js

co(function*(){
  var i2 = -1;
  var len2 = names.length;
  var db = yield PouchDB.bind(null,'names');
  db.replicate.to('http://127.0.0.1:5984/cases',{continuous:true});
  var out = [];
  while(++i2<len2){
    let which = names[i2];
    let whichName = which.split("_").join(" ");
    console.log(whichName);
    out[i2] = yield co(function*(){
      var baseDir = './'+which;
      var inDir = baseDir + "/documents";
      var files = yield fs.readdir.bind(fs, inDir);
      var len = files.length;
      var i = -1;
      while(++i<len){
        let file = yield fs.readFile.bind(fs,inDir+'/'+files[i],{encoding:'utf8'});
        let json = yield parseXML(file);
        cleanUpJson(json);//actually just omited code
        try{
          yield db.put.bind(db,json);
        }catch(e){
          //handle error
          //omited
        }
      }
      return 'done '+i+" for"+whichName;
    });
  }
  return out;
})(function(err,done){
  console.log(err, done);
})