tests/cases/conformance/es6/yieldExpressions/generatorTypeCheck23.ts(4,11): error TS2504: No best common type exists among yield expressions.


==== tests/cases/conformance/es6/yieldExpressions/generatorTypeCheck23.ts (1 errors) ====
    class Foo { x: number }
    class Bar extends Foo { y: string }
    class Baz { z: number }
    function* g3() {
              ~~
!!! error TS2504: No best common type exists among yield expressions.
        yield;
        yield new Foo;
        yield new Bar;
        yield new Baz;
        yield *[new Bar];
        yield *[new Baz];
    }