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

static method test() → dynamic {
  asy::Future<core::int> base;
  dynamic f = base.then((dynamic x) → dynamic {
    return x.==(0);
  });
  dynamic g = base.then((dynamic x) → dynamic => x.==(0));
  asy::Future<core::bool> b = f;
  b = g;
}
static method main() → dynamic {}