--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/demo/rollup.config.js	Wed Nov 17 15:36:41 2021 -0800
@@ -0,0 +1,17 @@
+import html from '@web/rollup-plugin-html';
+import resolve from '@rollup/plugin-node-resolve';
+import summary from 'rollup-plugin-summary';
+
+export default {
+  plugins: [
+    html({
+      input: 'index.html',
+    }),
+    resolve(),
+    summary(),
+  ],
+  output: {
+    dir: 'build',
+  },
+  preserveEntrySignatures: 'strict',
+};
\ No newline at end of file