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LibJS: Handle Proxy with Array target in IsArray() abstract operation

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This was missing from Value::is_array(), which is equivalent to the
spec's IsArray() abstract operation - it treats a Proxy value with an
Array target object as being an Array.
It can throw, so needs both the global object and an exception check
now.
This commit is contained in:
Linus Groh 2021-06-08 21:53:36 +01:00 • committed by Andreas Kling
parent 9b35231453
commit 83be39c91a
11 changed files with 52 additions and 24 deletions
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2
Userland/Libraries/LibJS/Runtime/ArrayConstructor.cpp
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@ -142,7 +142,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayConstructor::from)
JS_DEFINE_NATIVE_FUNCTION(ArrayConstructor::is_array)
{
auto value = vm.argument(0);
return Value(value.is_array());
return Value(value.is_array(global_object));
}
JS_DEFINE_NATIVE_FUNCTION(ArrayConstructor::of)