text: //// [for-of26.ts]
  var x: any;
  for (var v of new StringIterator) { }
  
  class StringIterator {
      next() {
          return x;
      }
      [Symbol.iterator]() {
          return this;
      }
  }
  
  //// [for-of26.js]
  var x;
  for (var v of new StringIterator) { }
  class StringIterator {
      next() {
          return x;
      }
      [Symbol.iterator]() {
          return this;
      }
  }
  