24 var proxy = new Proxy(target, handler);  variable
28   "foo" in proxy;
36   with (proxy) {
47   with (proxy) {
67 var proxy = new Proxy(target, handler);  variable
69 assert("present" in proxy === true);
70 assert("non_present" in proxy === false);
86 var proxy = new Proxy(target, handler);  variable
88 assert("foo" in proxy === false);
89 assert("bar" in proxy === true);
96 var proxy = new Proxy(target, handler);  variable
98 assert("foo" in proxy === true);
105 var proxy = new Proxy(target, handler);  variable
107 assert("foo" in proxy === true);
114 var proxy = new Proxy(target, handler);  variable
117   "foo" in proxy;
153 var proxy = new Proxy(target, handler);  variable
156   'prop' in proxy;
165 var proxy = new Proxy(target, handler);  variable
168   'a' in proxy;