function shouldBe(actual, expected) { if (actual !== expected) throw new Error('bad value: ' + actual); } noInline(shouldBe); function test(object) { return 'return' in object; } noInline(test); var object1 = {}; var object2 = { hello: 42 }; for (var i = 0; i < 10; ++i) { shouldBe(test(object1), false); } for (var i = 0; i < 1e6; ++i) { shouldBe(test(object1), false); shouldBe(test(object2), false); }