Experimental rollup support

script/rollup.js

@@ -0,0 +1,30 @@
+var rollup = require('rollup').rollup;
+var babel = require('rollup-plugin-babel');
+var uglify = require('rollup-plugin-uglify');
+var commonjs = require('rollup-plugin-commonjs');
+var nodeResolve = require('rollup-plugin-node-resolve');
+
+rollup({
+  entry: 'src/home-assistant.js',
+  plugins: [
+    nodeResolve({
+      jsnext: true,
+      main: true,
+    }),
+
+    commonjs({
+      include: 'node_modules/**',
+    }),
+
+    babel({
+      exclude: 'node_modules/**',
+    }),
+    uglify(),
+  ],
+}).then(function (bundle) {
+  return bundle.write({
+    format: 'es6',
+    // format: 'iife',
+    dest: 'build/ui_rollup.js',
+  });
+});

src/home-assistant.html

@@ -103,3 +103,4 @@ Polymer({
 </script>
 
 <script src='../build/_ui_compiled.js'></script>
+<!-- <script src='../build/ui_rollup.js'></script> -->