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LibJS: Explicitly return and accept a Function* in species_constructor

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The second argument (the default constructor) and the return value have
to be constructors (as a result functions), so we can require that
explicitly by using appropriate types.
This commit is contained in:
Idan Horowitz 2021-06-10 23:50:48 +03:00 • committed by Linus Groh
parent 4531f689ff
commit b041108a1e
3 changed files with 5 additions and 5 deletions
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4
Userland/Libraries/LibJS/Runtime/Value.cpp
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@ -1387,7 +1387,7 @@ size_t length_of_array_like(GlobalObject& global_object, const Object& object)
}
// 7.3.22 SpeciesConstructor, https://tc39.es/ecma262/#sec-speciesconstructor
Object* species_constructor(GlobalObject& global_object, const Object& object, Object& default_constructor)
Function* species_constructor(GlobalObject& global_object, const Object& object, Function& default_constructor)
{
auto& vm = global_object.vm();
auto constructor = object.get(vm.names.constructor).value_or(js_undefined());
@ -1403,7 +1403,7 @@ Object* species_constructor(GlobalObject& global_object, const Object& object, O
if (species.is_nullish())
return &default_constructor;
if (species.is_constructor())
return &species.as_object();
return &species.as_function();
vm.throw_exception<TypeError>(global_object, ErrorType::NotAConstructor, species.to_string_without_side_effects());
return nullptr;
}