LibWeb/Bindings: Ensure identity for [LegacyUnforgeable] attributes #7350
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The WebIDL spec requires that attributes marked [LegacyUnforgeable] share the same getter and setter function objects across all instances within the same Realm. Previously, we were creating new JS::NativeFunction wrappers during every instance initialization, which caused identity checks to fail. This change moves these functions into Bindings::Intrinsics so they are created once per Realm and reused.
shannonbooth
changed the title
gmta
approved these changes
Jan 8, 2026
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The WebIDL spec requires that attributes marked [LegacyUnforgeable]
share the same getter and setter function objects across all instances
within the same Realm.
Previously, we were creating new JS::NativeFunction wrappers during
every instance initialization, which caused identity checks to fail.
This change moves these functions into Bindings::Intrinsics so they
are created once per Realm and reused.