library /*isNonNullableByDefault*/;
//
// Problems in library:
//
// pkg/front_end/testcases/nnbd/issue41437c.dart:21:10: Error: A value of type 'Stream<dynamic>' can't be assigned to a variable of type 'Stream<bool>'.
//  - 'Stream' is from 'dart:async'.
//   yield* getStreamNull(); // error
//          ^
//
// pkg/front_end/testcases/nnbd/issue41437c.dart:24:25: Error: A value of type 'Stream<dynamic>' can't be returned from a function with return type 'Stream<bool>'.
//  - 'Stream' is from 'dart:async'.
// Stream<bool> test5() => getStreamNull(); // error
//                         ^
//
// pkg/front_end/testcases/nnbd/issue41437c.dart:38:12: Error: A value of type 'Stream<dynamic>' can't be assigned to a variable of type 'Stream<bool>'.
//  - 'Stream' is from 'dart:async'.
//     yield* getStreamNull(); // error
//            ^
//
// pkg/front_end/testcases/nnbd/issue41437c.dart:41:27: Error: A value of type 'Stream<dynamic>' can't be returned from a function with return type 'Stream<bool>'.
//  - 'Stream' is from 'dart:async'.
//   Stream<bool> test5() => getStreamNull(); // error
//                           ^
//
// pkg/front_end/testcases/nnbd/issue41437c.dart:49:5: Error: A value of type 'Stream<dynamic>' can't be assigned to a variable of type 'Stream<bool>'.
//  - 'Stream' is from 'dart:async'.
//   })(); // error
//     ^
//
// pkg/front_end/testcases/nnbd/issue41437c.dart:54:5: Error: A value of type 'Stream<dynamic>' can't be assigned to a variable of type 'Stream<bool>'.
//  - 'Stream' is from 'dart:async'.
//   })(); // error
//     ^
//
// pkg/front_end/testcases/nnbd/issue41437c.dart:55:46: Error: A value of type 'Stream<dynamic>' can't be assigned to a variable of type 'Stream<bool>'.
//  - 'Stream' is from 'dart:async'.
//   Stream<bool> var5 = (() => getStreamNull())(); // error
//                                              ^
//
import self as self;
import "dart:async" as asy;
import "dart:core" as core;

static method getNull() → dynamic
  return null;
static method getStreamNull() → asy::Stream<dynamic> async* {
  yield null;
}
static method getStreamBool() → asy::Stream<core::bool> async* {
  yield true;
}
static method test1() → asy::Stream<core::bool> async* {
  yield self::getNull() as{TypeError,ForDynamic,ForNonNullableByDefault} core::bool;
}
static method test2() → asy::Stream<core::bool>
  return self::getNull() as{TypeError,ForDynamic,ForNonNullableByDefault} asy::Stream<core::bool>;
static method test3() → core::bool
  return self::getNull() as{TypeError,ForDynamic,ForNonNullableByDefault} core::bool;
static method test4() → asy::Stream<core::bool> async* {
  yield* invalid-expression "pkg/front_end/testcases/nnbd/issue41437c.dart:21:10: Error: A value of type 'Stream<dynamic>' can't be assigned to a variable of type 'Stream<bool>'.
 - 'Stream' is from 'dart:async'.
  yield* getStreamNull(); // error
         ^" in self::getStreamNull() as{TypeError,ForNonNullableByDefault} asy::Stream<core::bool>;
}
static method test5() → asy::Stream<core::bool>
  return invalid-expression "pkg/front_end/testcases/nnbd/issue41437c.dart:24:25: Error: A value of type 'Stream<dynamic>' can't be returned from a function with return type 'Stream<bool>'.
 - 'Stream' is from 'dart:async'.
Stream<bool> test5() => getStreamNull(); // error
                        ^" in self::getStreamNull() as{TypeError,ForNonNullableByDefault} asy::Stream<core::bool>;
static method test6() → asy::Stream<core::bool>
  return self::getStreamBool();
static method test7() → asy::Stream<core::bool> async* {
  yield* self::getStreamBool();
}
static method test() → dynamic async /* futureValueType= dynamic */ {
  function test1() → asy::Stream<core::bool> async* {
    yield self::getNull() as{TypeError,ForDynamic,ForNonNullableByDefault} core::bool;
  }
  function test2() → asy::Stream<core::bool>
    return self::getNull() as{TypeError,ForDynamic,ForNonNullableByDefault} asy::Stream<core::bool>;
  function test3() → core::bool
    return self::getNull() as{TypeError,ForDynamic,ForNonNullableByDefault} core::bool;
  function test4() → asy::Stream<core::bool> async* {
    yield* invalid-expression "pkg/front_end/testcases/nnbd/issue41437c.dart:38:12: Error: A value of type 'Stream<dynamic>' can't be assigned to a variable of type 'Stream<bool>'.
 - 'Stream' is from 'dart:async'.
    yield* getStreamNull(); // error
           ^" in self::getStreamNull() as{TypeError,ForNonNullableByDefault} asy::Stream<core::bool>;
  }
  function test5() → asy::Stream<core::bool>
    return invalid-expression "pkg/front_end/testcases/nnbd/issue41437c.dart:41:27: Error: A value of type 'Stream<dynamic>' can't be returned from a function with return type 'Stream<bool>'.
 - 'Stream' is from 'dart:async'.
  Stream<bool> test5() => getStreamNull(); // error
                          ^" in self::getStreamNull() as{TypeError,ForNonNullableByDefault} asy::Stream<core::bool>;
  function test6() → asy::Stream<core::bool>
    return self::getStreamBool();
  function test7() → asy::Stream<core::bool> async* {
    yield* self::getStreamBool();
  }
  asy::Stream<core::bool> var1 = invalid-expression "pkg/front_end/testcases/nnbd/issue41437c.dart:49:5: Error: A value of type 'Stream<dynamic>' can't be assigned to a variable of type 'Stream<bool>'.
 - 'Stream' is from 'dart:async'.
  })(); // error
    ^" in (() → asy::Stream<dynamic> async* {
    yield self::getNull();
  })(){() → asy::Stream<dynamic>} as{TypeError,ForNonNullableByDefault} asy::Stream<core::bool>;
  asy::Stream<core::bool> var2 = (() → dynamic => self::getNull())(){() → dynamic} as{TypeError,ForDynamic,ForNonNullableByDefault} asy::Stream<core::bool>;
  core::bool var3 = (() → dynamic => self::getNull())(){() → dynamic} as{TypeError,ForDynamic,ForNonNullableByDefault} core::bool;
  asy::Stream<core::bool> var4 = invalid-expression "pkg/front_end/testcases/nnbd/issue41437c.dart:54:5: Error: A value of type 'Stream<dynamic>' can't be assigned to a variable of type 'Stream<bool>'.
 - 'Stream' is from 'dart:async'.
  })(); // error
    ^" in (() → asy::Stream<dynamic> async* {
    yield* self::getStreamNull();
  })(){() → asy::Stream<dynamic>} as{TypeError,ForNonNullableByDefault} asy::Stream<core::bool>;
  asy::Stream<core::bool> var5 = invalid-expression "pkg/front_end/testcases/nnbd/issue41437c.dart:55:46: Error: A value of type 'Stream<dynamic>' can't be assigned to a variable of type 'Stream<bool>'.
 - 'Stream' is from 'dart:async'.
  Stream<bool> var5 = (() => getStreamNull())(); // error
                                             ^" in (() → asy::Stream<dynamic> => self::getStreamNull())(){() → asy::Stream<dynamic>} as{TypeError,ForNonNullableByDefault} asy::Stream<core::bool>;
  asy::Stream<core::bool> var6 = (() → asy::Stream<core::bool> => self::getStreamBool())(){() → asy::Stream<core::bool>};
  asy::Stream<core::bool> var7 = (() → asy::Stream<core::bool> async* {
    yield* self::getStreamBool();
  })(){() → asy::Stream<core::bool>};
}
static method main() → dynamic {}