eval-created local bindings survive delete

[Monti-27]

Direct eval inside a function creates local var and function bindings that should be deletable, but Boa keeps them alive after delete.

(function () {
  var after;
  eval("delete x; after = () => x; var x;");
  try { after(); console.log("no throw"); } catch (e) { console.log(e.name); }
}());

(function () {
  var after;
  eval("delete f; after = () => f; function f() {}");
  try { after(); console.log("no throw"); } catch (e) { console.log(e.name); }
}());

Current Boa:

• no throw
• no throw

Expected:

• ReferenceError
• ReferenceError

This also matches the failing test262 cases:

• test/language/eval-code/direct/var-env-var-init-local-new-delete.js
• test/language/eval-code/direct/var-env-func-init-local-new-delete.js

[Monti-27]

i'm have taken this issue and working on the fix
thanks !