Allowing to pass options to css nano

css.js

@@ -182,7 +182,12 @@ class CSSTask extends TaskKitTask {
 
     // minify if specified in config files:
     if (this.options.minify) {
-      processes.push(cssnano({ zindex: false }));
+      const options = this.options.minifyOptions || {
+        zindex: false,
+        reduceIdents: false
+      };
+
+      processes.push(cssnano(options));
     }
     async.autoInject({
       contents: (done) => {

test/fixtures/minify-options.css

@@ -0,0 +1,11 @@
+@keyframes fadeOut {
+  from {
+    opacity: 1;
+  }
+  to {
+    opacity: 0;
+  }
+}
+.box {
+  animation-name: fadeOut;
+}

test/fixtures/minify.css

@@ -1,3 +1,15 @@
+@keyframes fadeOut {
+  from {
+    opacity: 1;
+  }
+  to {
+    opacity: 0;
+  }
+}
+.box {
+  animation-name: fadeOut;
+}
+
 body {
   background: red;
 }

test/minify-options.test.js

@@ -0,0 +1,21 @@
+const tap = require('tap');
+const ClientKitCss = require('../');
+const utils = require('./utils');
+
+tap.test('minify options', (t) => {
+  const css = new ClientKitCss('minify', {
+    files: {
+      'test/out/minify-options.css': 'test/fixtures/minify-options.css'
+    },
+    minify: true,
+    minifyOptions: {
+      zindex: false,
+      reduceIdents: true
+    }
+  });
+  css.execute((err, results) => {
+    t.equal(err, null);
+    utils.checkOutput(t, 'minify-options.css');
+    t.end();
+  });
+});