flutter_web_optimizer 1.4.2

flutter_web_optimizer: ^1.4.2 copied to clipboard

example/lib/main.dart

import 'package:flutter/cupertino.dart' show CupertinoActivityIndicator;
import 'package:flutter/material.dart';

import 'main_page.dart';
import 'sub_page.dart' deferred as sub_page;

void main() {
  runApp(const App());
}

class App extends StatelessWidget {
  const App({super.key});

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        // This is the theme of your application.
        //
        // Try running your application with "flutter run". You'll see the
        // application has a blue toolbar. Then, without quitting the app, try
        // changing the primarySwatch below to Colors.green and then invoke
        // "hot reload" (press "r" in the console where you ran "flutter run",
        // or simply save your changes to "hot reload" in a Flutter IDE).
        // Notice that the counter didn't reset back to zero; the application
        // is not restarted.
        primarySwatch: Colors.blue,
      ),
      debugShowCheckedModeBanner: false,
      initialRoute: '/main',
      routes: {
        '/main': (_) => const MainPage(),
        '/sub': (_) {
          return FutureBuilder<void>(
            future: sub_page.loadLibrary(),
            builder: (_, AsyncSnapshot<void> snapshot) {
              if (snapshot.connectionState == ConnectionState.done) {
                return sub_page.SubPage();
              } else {
                return const CupertinoActivityIndicator();
              }
            },
          );
        },
      },
    );
  }
}