No. JS engines detect of eval in the AST.

It's why you can't rename eval and reference the current scope.

  const eval2 = eval;
  (() => {
    const a = 1;
    eval2("a");
  })();
  // ReferenceError: a is not defined

---

The reason JS engines choose to share the closure record among all closures create in the function scope is purely for performance.

  function f() {
    const a = {};
    const b = {};
    return [
      () => a,
      () => b,
    ];
  }

Both functions share the same single closure record, referencing a and b.

JavaScript developers have rediscovered this over and over and over again.

* Meteor.js (2013) [1]

* My personal journey (2013) [2]

[1] https://blog.meteor.com/an-interesting-kind-of-javascript-me...

[2] https://stackoverflow.com/questions/19798803/how-javascript-...