js/src/jit-test/tests/proxy/testDirectProxyKeys7.js

changeset 0
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1 load(libdir + "asserts.js");
2
3 /*
4 * Throw a TypeError if the trap skips an existing own enumerable property on a
5 * non-extensible object
6 */
7 var target = {};
8 Object.defineProperty(target, 'foo', {
9 enumerable: true,
10 configurable: true
11 });
12 Object.preventExtensions(target);
13 assertThrowsInstanceOf(function () {
14 Object.keys(new Proxy(target, {
15 keys: function (target) {
16 return [];
17 }
18 }));
19 }, TypeError);

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