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LibWeb: Make namespace attributes writable and configurable by default

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This matches the prototype attributes.

Used by https://chatgpt.com/, where it runs this code:
```js
CSS.supports('animation-timeline: --works')
```
If this returns false, it will attempt to polyfill Animation Timeline
and override CSS.supports to support Animation Timeline properties.
This commit is contained in:
Luke Wilde 2025-02-06 19:45:52 +00:00 • committed by Andreas Kling
commit f1801fb1d2
Notes: github-actions[bot] 2025-02-07 14:37:03 +00:00
3 changed files with 102 additions and 2 deletions
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62
Tests/LibWeb/Text/expected/namespace-objects-default-property-attributes.txt Normal file
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== CSS property descriptors
supports writable: true
supports configurable: true
supports enumerable: true
supports value before: function supports() { [native code] }
supports value after: replaced
escape writable: true
escape configurable: true
escape enumerable: true
escape value before: function escape() { [native code] }
escape value after: replaced
== WebAssembly property descriptors
compile writable: true
compile configurable: true
compile enumerable: true
compile value before: function compile() { [native code] }
compile value after: replaced
instantiate writable: true
instantiate configurable: true
instantiate enumerable: true
instantiate value before: function instantiate() { [native code] }
instantiate value after: replaced
compileStreaming writable: true
compileStreaming configurable: true
compileStreaming enumerable: true
compileStreaming value before: function compileStreaming() { [native code] }
compileStreaming value after: replaced
instantiateStreaming writable: true
instantiateStreaming configurable: true
instantiateStreaming enumerable: true
instantiateStreaming value before: function instantiateStreaming() { [native code] }
instantiateStreaming value after: replaced
validate writable: true
validate configurable: true
validate enumerable: true
validate value before: function validate() { [native code] }
validate value after: replaced
Global writable: true
Global configurable: true
Global enumerable: false
Global value before: function Global() { [native code] }
Global value after: replaced
Instance writable: true
Instance configurable: true
Instance enumerable: false
Instance value before: function Instance() { [native code] }
Instance value after: replaced
Memory writable: true
Memory configurable: true
Memory enumerable: false
Memory value before: function Memory() { [native code] }
Memory value after: replaced
Module writable: true
Module configurable: true
Module enumerable: false
Module value before: function Module() { [native code] }
Module value after: replaced
Table writable: true
Table configurable: true
Table enumerable: false
Table value before: function Table() { [native code] }
Table value after: replaced