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18ae34d8f2
Missing coverage encountered while implementing <https://github.com/tc39/ecma262/pull/3307> in SpiderMonkey. Ensure environment lookups are performed in the correct order: - keyed-destructuring-property-reference-target-evaluation-order-with-bindings.js Ensure `delete super[elem]` steps are correctly performed: - delete/super-property-topropertykey.js - delete/super-property-uninitialized-this.js Ensure ToPropertyKey for computed property names in object literals correctly performed: - object/computed-property-name-topropertykey-before-value-evaluation.js Ensure `GetSuperBase` is executed before `ToPropertKey`: - super/prop-expr-getsuperbase-before-topropertykey-* Ensure `GetThisBinding` is executed first: - super/prop-expr-uninitialized-this-*
44 lines
1.0 KiB
JavaScript
44 lines
1.0 KiB
JavaScript
// Copyright (C) 2024 André Bargull. 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-delete-operator-runtime-semantics-evaluation
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description: >
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Element expression in delete super not evaluated when this is uninitialized.
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info: |
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13.5.1.2 Runtime Semantics: Evaluation
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UnaryExpression : delete UnaryExpression
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1. Let ref be ? Evaluation of UnaryExpression.
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...
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13.3.7.1 Runtime Semantics: Evaluation
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SuperProperty : super [ Expression ]
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...
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2. Let actualThis be ? env.GetThisBinding().
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3. Let propertyNameReference be ? Evaluation of Expression.
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...
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9.1.1.3.4 GetThisBinding ( )
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...
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2. If envRec.[[ThisBindingStatus]] is uninitialized, throw a ReferenceError exception.
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...
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---*/
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class Base {
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constructor() {
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throw new Test262Error("base constructor called");
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}
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}
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class Derived extends Base {
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constructor() {
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delete super[(super(), 0)];
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}
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}
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assert.throws(ReferenceError, () => new Derived);
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