src/third_party/mozjs-45/js/src/jit-test/tests/basic/bug806522.js

load(libdir + "asserts.js");

var g = evalcx("lazy");
assertThrowsInstanceOf(
    () => evaluate("{ let eval; eval()}", {global: g}),
    g.TypeError); // eval is not a function
assertEq(evaluate("{ let eval = parseInt; eval()}", {global: g}), NaN);