user.save(function(err, user) {
     if (err) {
         console.error(err);
     } else {
         console.log(user);
     }
     mongoose.disconnect();
 });

 return new Promise((ok, fail) => {
     mongoose.disconnect((e => {
         if (e) {
             fail(e);
         } else {
             ok(true);
         }
     }));
 });

    /**
     * Mongodb disconnect
     */
    public disconnect(): void {

        Mongoose.disconnect((err) => {
            Logger.info(err);
        });

        // Mongoose.connection.close(function() {
        //      Logger.info("Mongoose connection disconnected");
        //      callback();
        //     // process.exit(0);
        // });

        /** When the connection is disconnected */
        Mongoose.connection.on("disconnected", function() {
            Logger.info("Mongoose default connection disconnected");
        });
    }

function disconnect() {
    mongoose.disconnect();
}

});
var mongooseConnection: mongoose.Connection = mongoose.createConnection();
mongoose.createConnection(connectUri).open('');
mongoose.createConnection(connectUri, {
  db: {
    native_parser: true
  }
}).open('');
mongoose.createConnection('localhost', 'database', 3000).open('');
mongoose.createConnection('localhost', 'database', 3000, {
  user: 'larry',
  config: {
    autoIndex: false
  }
}).open('');
mongoose.disconnect(cb).then(cb).fulfill;
mongoose.get('test');
mongoose.model('Actor', new mongoose.Schema({
  name: String
}), 'collectionName', true).find({});
mongoose.model('Actor').find({});
mongoose.modelNames()[0].toLowerCase();
new (new mongoose.Mongoose()).Mongoose().connect('');
mongoose.plugin(cb, {}).connect('');
mongoose.set('test', 'value');
mongoose.set('debug', function(collectionName: any, methodName: any, arg1: any, arg2: any) {});
mongoose.STATES.hasOwnProperty('');
mongoose.connection.on('error', cb);
new mongoose.mongo.MongoError('error').stack;
mongoose.SchemaTypes.String;
mongoose.Types.ObjectId;

 public stop(): void {
   this.server.close();
   mongoose.disconnect();
 }

 close: (done) => {
     mongoose.disconnect(err=> {
         done(err)
     });
 },

export var disconnect = function() {
  mongoose.disconnect();
};

export function mongoDisconnect() {
  mongoose.disconnect(function (err) {
    console.log(chalk.default.bold.yellow('Disconnected from MongoDB.'));
  });
};

 disconnect() {
     mongoose.disconnect();
 }