library test;
import self as self;
import "dart:async" as asy;
import "dart:core" as core;

import "dart:async";

static method test() → dynamic {
  () →* asy::Stream<core::num*>* f = () → asy::Stream<core::num*>* async* {
    yield 1;
    asy::Stream<core::double*>* s;
    yield* s;
  };
  asy::Stream<core::num*>* g = f.call();
  asy::Stream<core::int*>* h = f.call() as{TypeError} asy::Stream<core::int*>*;
}
static method main() → dynamic {}