[compiler] IfExpressions and AssignmentExpressions in loop bodies #47

f() ->
  for let i = 0; i < 10; i++:
    val = if check:
      val2 = 3
      val2
    else:
      val3 = 4
      val3

function f() {
  for (let i = 0; i < 10; i++) {
    const val = check ? function () {
      var _ret;

      const val2 = 3;
      _ret = val2;
      return _ret;
    }() : function () {
      const val3 = 4;
      return _ret = val3;
    }();
  }
}