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38 lines
1.1 KiB
JavaScript
38 lines
1.1 KiB
JavaScript
// Copyright (C) 2020 Leo Balter. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-new-operator
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description: >
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The constructExpr is referenced before arguments in the same EvaluateNew evaluation.
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Function wrap-up to use the same function level binding ref.
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info: |
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NewExpression : new NewExpression
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1. Return ? EvaluateNew(NewExpression, empty).
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MemberExpression : new MemberExpression Arguments
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1. Return ? EvaluateNew(MemberExpression, Arguments).
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Runtime Semantics: EvaluateNew
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3. Let ref be the result of evaluating constructExpr.
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4. Let constructor be ? GetValue(ref).
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5. If arguments is empty, let argList be a new empty List.
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6. Else,
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a. Let argList be ? ArgumentListEvaluation of arguments.
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7. If IsConstructor(constructor) is false, throw a TypeError exception.
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8. Return ? Construct(constructor, argList).
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---*/
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function fn() {
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var x = function() {
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this.foo = 42;
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};
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var result = new x(x = 1);
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assert.sameValue(x, 1);
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assert.sameValue(result.foo, 42);
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}
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fn();
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