YieldExpression14_es6.ts(3,6): error TS1163: A 'yield' expression is only allowed in a generator body.
YieldExpression14_es6.ts(3,12): error TS2663: Cannot find name 'foo'. Did you mean the instance member 'this.foo'?


==== YieldExpression14_es6.ts (2 errors) ====
    class C {
      foo() {
         yield foo
         ~~~~~
!!! error TS1163: A 'yield' expression is only allowed in a generator body.
               ~~~
!!! error TS2663: Cannot find name 'foo'. Did you mean the instance member 'this.foo'?
      }
    }