testDirectProxyHas6.js (378B)
1 /* 2 * Don't throw a type error if the trap reports an undefined property as 3 * non-present, regardless of extensibility. 4 */ 5 var target = {}; 6 Object.preventExtensions(target); 7 8 var handler = { has: () => false }; 9 10 for (let p of [new Proxy(target, handler), Proxy.revocable(target, handler).proxy]) { 11 assertEq('foo' in p, false); 12 assertEq(Symbol.iterator in p, false); 13 }