js/src/jit-test/tests/proxy/testDirectProxyHasOwn3.js

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1 load(libdir + "asserts.js");
2
3 /*
4 * Throw a TypeError if the trap reports a non-configurable own property as
5 * non-existent
6 */
7 var target = {};
8 Object.defineProperty(target, 'foo', {
9 configurable: false
10 });
11 assertThrowsInstanceOf(function () {
12 ({}).hasOwnProperty.call(Proxy(target, {
13 hasOwn: function (target, name) {
14 return false;
15 }
16 }), 'foo');
17 }, TypeError);

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