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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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21
Userland/Libraries/LibJS/Runtime/AggregateErrorConstructor.cpp
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@ -6,6 +6,7 @@
#include <LibJS/Runtime/AggregateError.h>
#include <LibJS/Runtime/AggregateErrorConstructor.h>
#include <LibJS/Runtime/Array.h>
#include <LibJS/Runtime/ErrorConstructor.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/IteratorOperations.h>
@ -34,17 +35,29 @@ Value AggregateErrorConstructor::call()
Value AggregateErrorConstructor::construct(Function&)
{
auto& vm = this->vm();
String message;
// FIXME: Use OrdinaryCreateFromConstructor(newTarget, "%AggregateError.prototype%")
auto* aggregate_error = AggregateError::create(global_object());
u8 attr = Attribute::Writable | Attribute::Configurable;
if (!vm.argument(1).is_undefined()) {
message = vm.argument(1).to_string(global_object());
auto message = vm.argument(1).to_string(global_object());
if (vm.exception())
return {};
aggregate_error->define_property(vm.names.message, js_string(vm, message), attr);
}
aggregate_error->install_error_cause(vm.argument(2));
if (vm.exception())
return {};
auto errors_list = iterable_to_list(global_object(), vm.argument(0));
if (vm.exception())
return {};
// FIXME: 2. Let O be ? OrdinaryCreateFromConstructor(newTarget, "%AggregateError.prototype%", « [[ErrorData]] »).
return AggregateError::create(global_object(), message, errors_list);
aggregate_error->define_property(vm.names.errors, Array::create_from(global_object(), errors_list), attr);
return aggregate_error;
}
}