function printBugNumber (num) { print ('BUGNUMBER: ' + num); } try { test(); } catch (e) {} function test() { printBugNumber(typeof BUGNUMBER == 'undefined'); 1|| q + 48? new q( printBugNumber, eval("var EXP_1 = new MyValuelessObject('string'); var EXP_2 = new MyValuelessObject(false); EXP_1 + EXP_2") ): 1; }