const mysql = require('mysql2/promise');
(async () => {
  const c = await mysql.createConnection({
    host: 'localhost', user: 'root', password: '74191221', database: 'competition_db'
  });
  const [t] = await c.query('SHOW TABLES');
  t.forEach(r => console.log(Object.values(r)[0]));
  await c.end();
})();