feat: auto styles

config/.neutrinorc.js

@@ -45,10 +45,37 @@ module.exports = {
         const testEntry = neutrino.config.entry('test').clear();
         testPaths.forEach((path) => testEntry.add(path));
       }
+      const cssPaths = glob.sync('./src/**/*.{css,scss}');
+      if (cssPaths.length > 0) {
+        const cssEntry = neutrino.config.entry('index.css').clear();
+        cssPaths.forEach((path) => cssEntry.add(path));
+      }
       neutrino.options.output = '.';
       react({
         clean: false,
         hot: false,
+        style: {
+          extract: {
+            enabled: false,
+          },
+          test: /\.(css|sass|scss)$/,
+          modulesTest: /\.module\.(css|sass|scss)$/,
+          loaders: [
+            {
+              loader: 'postcss-loader',
+              useId: 'postcss',
+              options: {
+                config: {
+                  path: process.cwd(),
+                },
+              },
+            },
+            {
+              loader: 'sass-loader',
+              useId: 'sass',
+            },
+          ],
+        },
       })(neutrino);
       Object.keys(neutrino.options.mains).forEach((main) => {
         neutrino.config.plugins.delete(`html-${main}`);