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Imstall mariadb package:

npm i mariadb

The code

const config = require("./config");
const db = config.database;
const mariadb = require('mariadb');
const pool = mariadb.createPool({
     host: db.host,
	 user: db.user,
	 password: db.password,
	 database: db.database,
     connectionLimit: 5
});
 
async function asyncSaveDataDB(data) {
  let conn;
  try {
	conn = await pool.getConnection();
	const rows = await conn.query("SELECT 1 as val");
	console.log(rows); //[ {val: 1}, meta: ... ]
	const res = await conn.query("INSERT INTO test (string1) value (?)", [data]);
	console.log(res); // { affectedRows: 1, insertId: 1, warningStatus: 0 }

  } catch (err) {
	throw err;
  } finally {
	if (conn) return conn.end();
  }
}

async function asyncSaveDataBulkDB(arr) {
  let conn;
  try {
	conn = await pool.getConnection();
	conn.batch("INSERT INTO `test` (string1) values (?)", arr)
    .then(res => {
         console.log(res); // 2
    });	 

  } catch (err) {
	throw err;
  } finally {
	if (conn) return conn.end();
  }
}

if (module.parent) {
    module.exports = { asyncSaveDataDB, asyncSaveDataBulkDB }
} else {
    asyncSaveDataBulkDB(['tt6', 'test 8']);
}

Config.js might look like the following:

module.exports = {
  database:{
    host: "185.221.154.249",
	user: "xxxxxxxxx",
	password: "xxxxxxxxx",
	database: 'xxxxxxxxx'
  }
}

Docs on mariaDb with Node.js