Fast sink doesn't work when using Wasm #250
Description
Sample code:
import 'dart:convert';
import 'package:crypto/crypto.dart';
import 'package:flutter/material.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({super.key});
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Testing fast sink on Wasm',
theme: ThemeData(
colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
useMaterial3: true,
),
home: const BenchmarkPage(),
);
}
}
class BenchmarkPage extends StatefulWidget {
const BenchmarkPage({super.key});
@override
State<BenchmarkPage> createState() => _BenchmarkPageState();
}
class _BenchmarkPageState extends State<BenchmarkPage> {
String benchmarkResult = '';
void _runBenchmark() {
final stopwatch = Stopwatch()..start();
for (int i = 0; i < 100000; i++) {
// Create deterministic strings
String data = "Deterministic string $i";
var bytes = utf8.encode(data);
// Compute SHA-512
sha512.convert(bytes);
}
stopwatch.stop();
setState(() {
benchmarkResult = 'Time taken: ${stopwatch.elapsedMilliseconds} ms';
});
}
@override
Widget build(BuildContext context) {
return Scaffold(
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
ElevatedButton(
onPressed: _runBenchmark,
child: const Text('Run Benchmark'),
),
Text(
benchmarkResult,
style: Theme.of(context).textTheme.bodyMedium,
),
],
),
),
);
}
}
This code works when using slow sinks, but gives errors now (on master) using fast sinks
flutter build web --wasm
cd build/web
dhttpd '--headers=Cross-Origin-Embedder-Policy=credentialless;Cross-Origin-Opener-Policy=same-origin'
The integer literal 0x8c3d37c819544da2 can't be represented exactly in JavaScript.
0x8c3d37c819544da2,