DefinitelyTyped/types/express-myconnection/express-myconnection-tests.ts

import express = require('express');
import mysql = require('mysql');
import connection = require('express-myconnection');

var app = express();

app.use(
    connection(
        mysql,
        {
            host: 'localhost',
            user: 'dbuser',
            password: 'password',
            port: 3306,
            database: 'mydb'
        },
        'single'
    )
);


app.use(function list(req: express.Request, res: express.Response, next: Function){

    req.getConnection(function(err: mysql.MysqlError, connection: mysql.Connection) {
        if (err) return next(err);

        connection.query('SELECT 1 AS RESULT', [], function(err: mysql.MysqlError, results: any) {
            if (err) return next(err);

            results[0].RESULT;
            // -> 1

            res.send(200);
        });
    });
});