access environment variable in web encore - pimcore symfony

access environment variable in web encore - pimcore symfony.txt

//inside webpack config file
var Encore = require('@symfony/webpack-encore');
var dotenv = require('dotenv');

Encore
    // ...

    // define the environment variables
    .configureDefinePlugin(options => {
        const env = dotenv.config();

        if (env.error) {
            throw env.error;
        }

        options['process.env'] = JSON.stringify(env.parsed);
    })
;

module.exports = Encore.getWebpackConfig();

//inside .env file
MY_ENV_VAR='MY ENV VALUE'

//inside js file
console.log(process.env.MY_ENV_VAR)

Try to avoid using dotenv. And be aware of the differences with symfony:
symfony/webpack-encore#567 (comment)