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

import "dart:async";

static method test() → dynamic {
  () →* asy::Stream<core::num*>* f = () → asy::Stream<core::num*>* /* originally async* */ {
    asy::_AsyncStarStreamController<core::num*>* :controller;
    dynamic :controller_stream;
    (dynamic) →* dynamic :async_op_then;
    (core::Object*, core::StackTrace*) →* dynamic :async_op_error;
    core::int* :await_jump_var = 0;
    dynamic :await_ctx_var;
    dynamic :saved_try_context_var0;
    dynamic :saved_try_context_var1;
    function :async_op(dynamic :result_or_exception, dynamic :stack_trace) → dynamic yielding 
      try
        try {
          #L1:
          {
            if(:controller.{asy::_AsyncStarStreamController::add}(1){(core::num*) → core::bool})
              return null;
            else
              [yield] null;
            asy::Stream<core::double*>* s;
            :controller.{asy::_AsyncStarStreamController::addStream}(s){(asy::Stream<core::num*>) → void};
            [yield] null;
            if(_in::unsafeCast<core::bool>(:result_or_exception))
              return null;
          }
          return;
        }
        on dynamic catch(dynamic exception, core::StackTrace* stack_trace) {
          :controller.{asy::_AsyncStarStreamController::addError}(exception, stack_trace){(core::Object, core::StackTrace) → void};
        }
      finally {
        :controller.{asy::_AsyncStarStreamController::close}(){() → dynamic};
      }
    :async_op_then = asy::_asyncThenWrapperHelper(:async_op);
    :async_op_error = asy::_asyncErrorWrapperHelper(:async_op);
    :controller = new asy::_AsyncStarStreamController::•<core::num*>(:async_op);
    :controller_stream = :controller.{asy::_AsyncStarStreamController::stream}{asy::Stream<core::num*>};
    return :controller_stream;
  };
  asy::Stream<core::num*>* g = f(){() →* asy::Stream<core::num*>*};
  asy::Stream<core::int*>* h = f(){() →* asy::Stream<core::num*>*} as{TypeError} asy::Stream<core::int*>*;
}
static method main() → dynamic {}