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32 lines
982 B
JavaScript
32 lines
982 B
JavaScript
// Copyright 2018 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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// Flags: --allow-natives-syntax
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// Collect the actual properties looked up on the Proxy.
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const actual = [];
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// Perform a relational comparison with a Proxy on the right hand
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// side and a Symbol which cannot be turned into a Number on the
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// left hand side.
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function foo() {
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actual.length = 0;
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const lhs = Symbol();
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const rhs = new Proxy({}, {
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get: function(target, property, receiver) {
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actual.push(property);
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return undefined;
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}
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});
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return lhs < rhs;
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}
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assertThrows(foo, TypeError);
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assertEquals([Symbol.toPrimitive, 'valueOf', 'toString'], actual);
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assertThrows(foo, TypeError);
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assertEquals([Symbol.toPrimitive, 'valueOf', 'toString'], actual);
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%OptimizeFunctionOnNextCall(foo);
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assertThrows(foo, TypeError);
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assertEquals([Symbol.toPrimitive, 'valueOf', 'toString'], actual);
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