There's a record & tuple proposal that would address this use case (currently served by tools such as Immer): const foo = #{}; foo = 42; //not allowed fo

There's a record & tuple proposal that would address this use case (currently served by tools such as Immer): const foo = #{}; foo = 42; //not allowed foo.bar = 'baz'; //not allowed https://2ality.com/2020/05/records-tuples-first-look.html https://2ality.com/2020/05/records-tuples-first-look.html