Use Vite dev process checking instead of NODE_ENV

postcss.config.cjs

@@ -4,8 +4,6 @@ const focusVisible = require('postcss-focus-visible')
 // const sortMediaQueries = require('postcss-sort-media-queries')
 const normalize = require('postcss-normalize')
 
-const dev = process.env.NODE_ENV === 'development'
-
 
 module.exports = {
     plugins: [
@@ -26,7 +24,7 @@ module.exports = {
         normalize({}),
 
         // CSS Nano
-        !dev && cssnano({
+        !process.env.DEV && cssnano({
             preset: ['default', {
                 autoprefixer: true,
                 discardComments: { removeAll: true },