foo.toString = function() { return 'ddd'; }
function foo() {}
var a = new foo
print(a instanceof foo)
var b = {
get __meta__ () { return 'b'; }
}
print(b.__meta__)
CmZvby50b1N0cmluZyA9IGZ1bmN0aW9uKCkgeyByZXR1cm4gJ2RkZCc7IH0KZnVuY3Rpb24gZm9vKCkge30KCnZhciBhID0gbmV3IGZvbwpwcmludChhIGluc3RhbmNlb2YgZm9vKQoKdmFyIGIgPSB7CiAgZ2V0IF9fbWV0YV9fICgpIHsgcmV0dXJuICdiJzsgfQp9CgpwcmludChiLl9fbWV0YV9fKQ==