multiple config ConnectionPool

const config = {
    nConnection:'conexion1',
    user: 'usuario_node',
    password: 'node123',
    server: '127.0.0.1', // You can use 'localhost\\instance' to connect to named instance
    database: 'pruebas_node',
    port: '1433',
    connectionTimeout:1000 ,
    options: {
        trustedConnection: true
    },
    parseJSON: true
}
const configs = {principal:{nConnection:'principal',
                        user: 'usuario_node',
                        password: 'node123',
                        server: '127.0.0.1', // You can use 'localhost\\instance' to connect to named instance
                        database: 'pruebas_node',
                        port: '1433',
                        connectionTimeout:1000 ,
                        options: {
                            trustedConnection: true
                        },
                        parseJSON: true
                    },
                    secundaria:{
                    nConnection:'secundaria',
                    user: 'usuario_node',
                    password: 'node123',
                    server: '127.0.0.1', // You can use 'localhost\\instance' to connect to named instance
                    database: 'pruebas  ',
                    port: '1433',
                    connectionTimeout:1000 ,
                    options: {
                        trustedConnection: true
                    },
                    parseJSON: true
                }};

var sql = require('mssql')
function getConnectionPoolGlobal(config){
    function Connect(resolve,reject){
        if (global.poolGlobal[config.nConnection]){
            console.log('Reutilizando pool '+config.nConnection+','+poolGlobal[config.nConnection].listenerCount())
           // console.log(poolGlobal[config.nConnection])
            resolve(poolGlobal[config.nConnection])
        }
        else{
        new sql.ConnectionPool(config).connect().then(poolObt=>{
            global.poolGlobal[config.nConnection]=poolObt
            resolve(global.poolGlobal[config.nConnection])
            console.log('Nuevo pool Creado')
        }).catch(err =>{
            reject(err)
        })
        }
    }
    return new Promise(Connect)
}
module.exports={
    config,
    getConnectionPoolGlobal,
    configs
};