function f(foo) { "use strict"; foo.bar; } var actual; try { f(); actual = "no error"; } catch (x) { actual = (x instanceof TypeError) ? "type error" : "some other error"; actual += (/use strict/.test(x)) ? " with directive" : " without directive"; } reportCompare("type error without directive", actual, "decompiled expressions in error messages should not include directive prologues");