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LibJS: Throw on assignment of an const variable

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Was stubbed out as an assert, should be handled with a runtime exception.
This commit is contained in:
Brian Gianforcaro
2020-04-12 15:50:49 -07:00
committed by Andreas Kling
parent 8e87d340c3
commit 0d41e542b7
2 changed files with 29 additions and 2 deletions
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6
Libraries/LibJS/Interpreter.cpp
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@@ -145,8 +145,10 @@ void Interpreter::set_variable(const FlyString& name, Value value, bool first_as
auto possible_match = scope.variables.get(name);
if (possible_match.has_value()) {
if (!first_assignment && possible_match.value().declaration_kind == DeclarationKind::Const)
ASSERT_NOT_REACHED();
if (!first_assignment && possible_match.value().declaration_kind == DeclarationKind::Const) {
throw_exception<TypeError>("Assignment to constant variable");
return;
}
scope.variables.set(move(name), { move(value), possible_match.value().declaration_kind });
return;