-1:000000000000 | 0:02061a0ddcb2 |
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1 load(libdir + "asserts.js"); | |
2 | |
3 /* | |
4 * Throw a TypeError if the trap reports an existing own property as | |
5 * non-existent on a non-extensible object | |
6 */ | |
7 var target = {}; | |
8 Object.defineProperty(target, 'foo', { | |
9 configurable: true | |
10 }); | |
11 Object.preventExtensions(target); | |
12 var caught = false; | |
13 assertThrowsInstanceOf(function () { | |
14 ({}).hasOwnProperty.call(new Proxy(target, { | |
15 hasOwn: function (target, name) { | |
16 return false; | |
17 } | |
18 }), 'foo'); | |
19 }, TypeError); |