As of today 28 November 2021, Wertik-js only supports MySQL database. Wertik JS provides a function called useMysqlDatabase you can use to connect to a database.

import wertik, { useMysqlDatabase } from "wertik-js/lib/";
  port: 1200,
  database: {
    default: useMysqlDatabase({
      name: "default",
      password: "pass",
      host: "localhost",
      port: 3306,
      username: "root",

Now run your code and if you pass database credentials correctly you will see something like this on your console along with other logs from wertik-js:

[DB] Succcessfully connected to database default

Since database is a object you can pass multiple connections as well.