DataAnalysis-Tmp/config/mysql.js

const mysql = require('mysql2/promise');

 class Mysql {
  static async connect() {
    const connection = await mysql.createConnection({
        host     : 'localhost',
        user     : 'root',
        password : '654321',
        database : 'devcloud20220227'
      }); 
    return connection;
   }
 }

 module.exports = Mysql;