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e31f0a7d25
PR-URL: https://github.com/nodejs/node/pull/28918 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Rich Trott <rtrott@gmail.com>
39 lines
977 B
JavaScript
39 lines
977 B
JavaScript
// Copyright 2015 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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function receiver() {
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return this;
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}
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function construct(f) {
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"use strict";
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class B {}
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class C extends B {
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bar() { return super.foo() }
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}
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B.prototype.foo = f;
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return new C();
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}
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function check(x, value, type) {
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assertEquals("object", typeof x);
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assertInstanceof(x, type);
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assertEquals(value, x);
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}
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var o = construct(receiver);
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%PrepareFunctionForOptimization(o.bar);
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check(o.bar.call(123), Object(123), Number);
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check(o.bar.call("a"), Object("a"), String);
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check(o.bar.call(undefined), this, Object);
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check(o.bar.call(null), this, Object);
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%OptimizeFunctionOnNextCall(o.bar);
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check(o.bar.call(456), Object(456), Number);
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check(o.bar.call("b"), Object("b"), String);
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check(o.bar.call(undefined), this, Object);
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check(o.bar.call(null), this, Object);
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