var createBuiltin = $vm.createBuiltin; function shouldBe(actual, expected) { if (actual !== expected) throw new Error('bad value: ' + actual); } var builtin = createBuiltin(`(function (target) { return @toObject(target, ""); })`); noInline(builtin); (function () { for (var i = 0; i < 1e4; ++i) { var object = builtin(Symbol("Cocoa")); shouldBe(object instanceof Symbol, true); shouldBe(String(object.valueOf()), `Symbol(Cocoa)`); } }());