20 var handler = { has (target) {  variable
24 var proxy = new Proxy(target, handler);
61 var handler = {  variable
67 var proxy = new Proxy(target, handler);
77 var handler = {  variable
86 var proxy = new Proxy(target, handler);
95 var handler = {};
96 var proxy = new Proxy(target, handler);
104 var handler = {has: null};  variable
105 var proxy = new Proxy(target, handler);
113 var handler = {has: 42};  variable
114 var proxy = new Proxy(target, handler);
128 var handler = {  variable
134 var proxy1 = new Proxy(target, handler);
135 var proxy2 = new Proxy(proxy1, handler);
147 var handler = {
153 var proxy = new Proxy(target, handler);
165 var proxy = new Proxy(target, handler);