tests/cases/conformance/es6/yieldExpressions/YieldExpression18_es6.ts(2,1): error TS1212: Identifier expected. 'yield' is a reserved word in strict mode.
tests/cases/conformance/es6/yieldExpressions/YieldExpression18_es6.ts(2,1): error TS2304: Cannot find name 'yield'.
tests/cases/conformance/es6/yieldExpressions/YieldExpression18_es6.ts(2,7): error TS2304: Cannot find name 'foo'.


==== tests/cases/conformance/es6/yieldExpressions/YieldExpression18_es6.ts (3 errors) ====
    "use strict";
    yield(foo);
    ~~~~~
!!! error TS1212: Identifier expected. 'yield' is a reserved word in strict mode.
    ~~~~~
!!! error TS2304: Cannot find name 'yield'.
          ~~~
!!! error TS2304: Cannot find name 'foo'.