[Webkit-unassigned] [Bug 281061] New: `Array.prototype.concat` stopped to work with `Symbol.species`
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Tue Oct 8 09:37:25 PDT 2024
https://bugs.webkit.org/show_bug.cgi?id=281061
Bug ID: 281061
Summary: `Array.prototype.concat` stopped to work with
`Symbol.species`
Product: WebKit
Version: WebKit Nightly Build
Hardware: Unspecified
OS: Unspecified
Status: NEW
Severity: Normal
Priority: P2
Component: JavaScriptCore
Assignee: webkit-unassigned at lists.webkit.org
Reporter: zloirock at ya.ru
`core-js` test case started to fail on WebKit from the latest Playwright on `Array.prototype.concat` + `Symbol.species` test:
```js
const array = [];
array.constructor = { [Symbol.species]: function () {
return { foo: 1 };
} };
console.log(array.concat().foo); // => `undefined`, expected 1
```
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