Laravel with Vue.js components in production on Forge/Digital Ocean

I have put a web app into production on Forge but can't seem to disable vue dev tools.

I have tried the following in my app.js file

if (process.env['production']) {
    Vue.config.devtools = false;
    Vue.config.debug = false;
    Vue.config.silent = true;
} else {
    Vue.config.devtools = true;
}

and

if (process.env.MIX_APP_ENV === 'production') {
    Vue.config.devtools = false;
    Vue.config.debug = false;
    Vue.config.silent = true;
} else {
    Vue.config.devtools = true;
    Vue.config.debug = true;
    Vue.config.silent =false;
}

and also just

Vue.config.devtools = false;
Vue.config.debug = false;
Vue.config.silent = true;

I also added MIX_NODE_ENV = production to my .env file in forge.

Am I missing something? Do I need to change the forge deployment script?

Im using Laravel 6.2 and vue.js 2.6.10.

Please help!!

Regards Paul.