js/src/jit-test/tests/proxy/testDirectProxyGetOwnPropertyDescriptor7.js

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1 load(libdir + "asserts.js");
2
3 /*
4 * Throw a TypeError if the trap reports a new own property on a non-extensible
5 * object
6 */
7 var target = {};
8 Object.preventExtensions(target);
9 assertThrowsInstanceOf(function () {
10 Object.getOwnPropertyDescriptor(new Proxy(target, {
11 getOwnPropertyDescriptor: function (target, name) {
12 return {};
13 }
14 }), 'foo');
15 }, TypeError);

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