Extract PostCSS config

postcss.config.js

@@ -0,0 +1,21 @@
+const pkg = require("./package.json");
+const bannerText = `${pkg.name} v${pkg.version}`;
+
+module.exports = {
+  map: {
+    inline: false,
+  },
+  plugins: [
+    require("postcss-css-variables"),
+    require("postcss-calc"),
+    require("cssnano")({
+      preset: "default",
+    }),
+    require("autoprefixer"),
+    require("postcss-banner")({
+      banner: bannerText,
+      important: true,
+      inline: true,
+    }),
+  ],
+};