node-seq startup

config.json:

{
  "database": {
    "connection": "pg://postgres:postgres@127.0.0.1:5432/test"
  },
  "web": {
    "port": 8000
  }
}

server.js:

var fs = require('fs'),   
    path = require('path'),
    express = require('express'), // included with boilerplate
    Seq = require('seq'), // npm install seq
    pg = require('pg'),   // npm install pg
    configFile = path.join(__dirname, 'config.json'),
    config = null;

Seq()
  .seq( function() { fs.readFile(configFile, this); } )
  .seq( function(data) { 
      config = JSON.parse(data.toString());
      pg.connect(config.database.connection, this);
    )
  .seq( function(client) {
     config.database.client = client;
      fs.readdir(path.join(__dirname, 'sql'), this);
    })

   /* what do I do here ? */
  .flatten()
  .parEach(function(file) {
    if (path.extname(file) == '.sql') {
      var table = path.basename(file, '.sql');
      console.log('checking for existance of ' + table);
      var sql = "SELECT relname FROM pg_class  WHERE relname = '"+file+"';";
      config.database.client.query(sql, function(err, result) {
        if (err) {
          //send err to seq
        } else if (result.rows.length == 0) {
          fs.readFile(path.join(__dirname, 'sql', file), function(err, data) {
            if (!err) {
              config.database.client.query(data.toString(), function(err, result) {
                if (err) {
                  //send to seq
                } else {
                  // this table is okay
                }
              });
            } else {
              // send err to seq?
            }
          })
        } else {
          // this table is okay
        }
      });
    }
  })

  /* don't want to get to this point until all tables have been created */
  .seq( startServer )
  .catch(function(err) { // report startup errors
    console.error(err.stack ? err.stack : err);
  });

function startServer() {
  server = express.createServer();
  server.configure( /* ... */ );
  server.listen(config.web.port || 8000); 
}