18 lines
647 B
JavaScript
18 lines
647 B
JavaScript
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// Copyright 2014 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Note: concat does not currently support species so there is no difference
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// between [].concat(foo) and Array.prototype.concat.apply(foo).
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var getTrap = function(t, key) {
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if (key === "length") return Symbol();
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if (key === "2") return "baz";
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if (key === "3") return "bar";
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};
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var target = [];
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var obj = new Proxy(target, {get: getTrap, has: () => true});
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assertThrows(() => [].concat(obj), TypeError);
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assertThrows(() => Array.prototype.concat.apply(obj), TypeError);
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