tests/cases/conformance/es6/yieldExpressions/YieldExpression12_es6.ts(3,6): error TS1163: 'yield' expression must be contained_within a generator declaration.
==== tests/cases/conformance/es6/yieldExpressions/YieldExpression12_es6.ts (1 errors) ====
class C {
constructor() {
yield foo
~~~~~
!!! error TS1163: 'yield' expression must be contained_within a generator declaration.
}