tests/cases/conformance/es6/for-ofStatements/for-of34.ts(1,10): error TS7022: 'v' implicitly has type 'any' because it does not have a type annotation and is referenced directly or indirectly in its own initializer. tests/cases/conformance/es6/for-ofStatements/for-of34.ts(4,5): error TS7023: 'next' implicitly has return type 'any' because it does not have a return type annotation and is referenced directly or indirectly in one of its return expressions. ==== tests/cases/conformance/es6/for-ofStatements/for-of34.ts (2 errors) ==== for (var v of new StringIterator) { } ~ !!! error TS7022: 'v' implicitly has type 'any' because it does not have a type annotation and is referenced directly or indirectly in its own initializer. class StringIterator { next() { ~~~~ !!! error TS7023: 'next' implicitly has return type 'any' because it does not have a return type annotation and is referenced directly or indirectly in one of its return expressions. return v; } [Symbol.iterator]() { return this; } }