Add browser:true to rollup-plugin-node-resolve.

rollup.config.js

@@ -30,7 +30,7 @@ export default {
 		// some cases you'll need additional configuration —
 		// consult the documentation for details:
 		// https://github.com/rollup/rollup-plugin-commonjs
-		resolve(),
+		resolve({ browser: true }),
 		commonjs(),
 
 		// Watch the `public` directory and refresh the