tests/cases/conformance/es6/functionDeclarations/FunctionDeclaration13_es6.ts(1,10): error TS1220: Generators are only available when targeting ECMAScript 2015 or higher.
tests/cases/conformance/es6/functionDeclarations/FunctionDeclaration13_es6.ts(3,11): error TS2304: Cannot find name 'yield'.


==== tests/cases/conformance/es6/functionDeclarations/FunctionDeclaration13_es6.ts (2 errors) ====
    function * foo() {
             ~
!!! error TS1220: Generators are only available when targeting ECMAScript 2015 or higher.
       // Legal to use 'yield' in a type context.
       var v: yield;
              ~~~~~
!!! error TS2304: Cannot find name 'yield'.
    }
    