mix.minify() doesn't minify!

• Laravel Mix Version: 1.5.1 (npm list --depth=0)
• Node Version (node -v): 6.11.2
• NPM Version (npm -v): 3.10.10
• OS: Windows 10

I just get an index.min.js file that is slightly larger than the ‘unminified’ one.

const {mix} = require('laravel-mix');

mix.js('resources/assets/js/index.js', 'public/js')
    .sass('resources/assets/scss/styles.scss','public/css', {
        outputStyle: 'compressed'
    })
      
if(process.env.NODE_ENV.trim() === 'production'){
    mix.minify('public/js/index.js')
    mix.version();
} else {
    mix.browserSync({
        proxy: 'http://localhost:8000'
    });
}

[MFFoX]

Adding to what @rohitbhirud and others have said, my problem was with the NODE_ENV not being set properly because of the scripts not being platform independent. I fixed this by using the cross-env package ie within your package.json scripts:

"scripts": {
    "development": "cross-env NODE_ENV=development webpack --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js",
    "production": "cross-env NODE_ENV=production webpack --progress --hide-modules --config=node_modules/laravel-mix/setup/webpack.config.js"
  }

[JeffreyWay]

First, you don’t need to do that check for production mode.

Minification will only take place during production builds (npm run production).