text: (function() {
    function f(g) {
      let x = 23;
      function f() {
        return x;
      }
      let a = [];
      a.push(g(f));
      x = 42;
      a.push(g(f));
      return a;
    }
    global.__optimize && __optimize(f);
    global.inspect = function() {
      return f(g => g());
    };
  })();
  