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LibJS: Implement the Error Cause proposal

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Currently stage 3. https://github.com/tc39/proposal-error-cause
This commit is contained in:
Linus Groh 2021-06-11 20:40:08 +01:00
parent 8d77a3297a
commit 862ba64037
11 changed files with 130 additions and 42 deletions
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15
Userland/Libraries/LibJS/Runtime/Object.cpp
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@ -1015,6 +1015,21 @@ Value Object::ordinary_to_primitive(Value::PreferredType preferred_type) const
return {};
}
// 20.5.8.1 InstallErrorCause, https://tc39.es/proposal-error-cause/#sec-errorobjects-install-error-cause
void Object::install_error_cause(Value options)
{
auto& vm = this->vm();
if (!options.is_object())
return;
auto& options_object = options.as_object();
if (!options_object.has_property(vm.names.cause))
return;
auto cause = options_object.get(vm.names.cause).value_or(js_undefined());
if (vm.exception())
return;
define_property(vm.names.cause, cause, Attribute::Writable | Attribute::Configurable);
}
Value Object::invoke_internal(const StringOrSymbol& property_name, Optional<MarkedValueList> arguments)
{
auto& vm = this->vm();