Promisified MySQL middleware for Node.js

database.js

const util = require('util')
const mysql = require('mysql')
const pool = mysql.createPool({
  connectionLimit: 10,
  host: 'localhost',
  user: 'root',
  password: 'password',
  database: 'my_database'
})

// Ping database to check for common exception errors.
pool.getConnection((err, connection) => {
  if (err) {
    if (err.code === 'PROTOCOL_CONNECTION_LOST') {
      console.error('Database connection was closed.')
    }
    if (err.code === 'ER_CON_COUNT_ERROR') {
      console.error('Database has too many connections.')
    }
    if (err.code === 'ECONNREFUSED') {
      console.error('Database connection was refused.')
    }
  }

  if (connection) connection.release()

  return
})

// Promisify for Node.js async/await.
pool.query = util.promisify(pool.query)

module.exports = pool

whenever i use await it shows 3 dot (...) below it meaning 'await' has no effect on the type of this expression.

i have used everything mentioned above

hi, how I add queryFormat to pool connections?

Hi there,

I am using this database connection configuration but somehow it is throwing an error while fire the query.

import { pool } from '../../config/mysql-config';
public async insertRecords() {
  try {
    const SQL = `INSERT INTO ${tableName} (description, title)
      VALUES ("description", "title")`

    const result = await pool.query(SQL)
    return result
    
  } catch (error) {
    throw new Error(error);
  }
}