Console.log in a production app using node.js, express and PM2 -

i'm using console.log debugging information in web app using node.js, expressjs , pm2. working fine :)

i want know if web app can have performance problems in production if use console.log this:

var myvariable = "enter in section of code"; console.log(myvariable); 

i have read console.log synchronous , can affect performance... if real in moment (i'm using express 4), how can remove these console.log in different environments production?

i'm using pm2 (pm2 logs command) watch logs , pm2 flush clean logs.

thanks.

you use winston logging , configure transport depending on env , example use console , file tranports in development , file in production. pd: pm2 takes data std log(console)