load(libdir + "asserts.js"); | |
/* | |
* Throw a TypeError if the trap skips an existing own enumerable property on a | |
* non-extensible object | |
*/ | |
var target = {}; | |
Object.defineProperty(target, 'foo', { | |
enumerable: true, | |
configurable: true | |
}); | |
Object.preventExtensions(target); | |
var handler = { ownKeys: () => [] }; | |
for (let p of [new Proxy(target, handler), Proxy.revocable(target, handler).proxy]) | |
assertThrowsInstanceOf(() => Object.keys(p), TypeError); |