mirror of https://github.com/tc39/test262.git
36 lines
1.0 KiB
JavaScript
36 lines
1.0 KiB
JavaScript
// Copyright (C) 2020 Alexey Shvayka. 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-destructuring-binding-patterns-runtime-semantics-bindinginitialization
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description: >
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Destructuring initializer is not evaluated when value is an object
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with [[IsHTMLDDA]] internal slot.
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info: |
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BindingPattern : ObjectBindingPattern
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1. Perform ? RequireObjectCoercible(value).
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2. Return the result of performing BindingInitialization for
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ObjectBindingPattern using value and environment as arguments.
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Runtime Semantics: KeyedBindingInitialization
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SingleNameBinding : BindingIdentifier Initializer[opt]
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[...]
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4. If Initializer is present and v is undefined, then
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[...]
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5. If environment is undefined, return ? PutValue(lhs, v).
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features: [destructuring-binding, IsHTMLDDA]
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---*/
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let initCount = 0;
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const counter = function() {
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initCount += 1;
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};
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const IsHTMLDDA = $262.IsHTMLDDA;
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const {x = counter()} = {x: IsHTMLDDA};
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assert.sameValue(x, IsHTMLDDA);
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assert.sameValue(initCount, 0);
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