node.js list all mongodb databases

action.js

/**
 * Uses MongooseJS to Connect to MongoDB
 * .Maps out all collections within
 */

var mongoose = require('mongoose')
  , MONGO_DB = 'mongodb://localhost/test';

mongoose.connect(MONGO_DB);

mongoose.connection.on('open', function(){
  mongoose.connection.db.collectionNames(function(error, names) {
    if (error) {
      throw new Error(error);
    } else {
      names.map(function(name) {
        console.log('found collection %s', name);
      });
    }
  });
});

mongoose.connection.on('error', function(error){
  throw new Error(error);
});

/* EOF */

action.sh

$ node script.js

install.sh

$ npm install mongoose

mongodb_list.js

var mongoose = require('mongoose')
  , dbNative = mongoose.connection.db;

console.log(dbNative);