// @dart = 2.9
library test;

import 'dart:async';

Future<IntToInt> b() async {}
IntToInt a() {}
Iterable<IntToInt> c() sync* {}
Iterable<IntToInt> d() sync* {}
Stream<IntToInt> e() async* {}
Stream<IntToInt> f() async* {}
main() {}
typedef int IntToInt(int i);