Nice stacks! Personally I would have used a generic type, i.e., class Stack<T>, instead of limiting the values to string. https://www.typescriptlang.org/docs/

Nice stacks! Personally I would have used a generic type, i.e., class Stack<T>, instead of limiting the values to string. https://www.typescriptlang.org/docs/handbook/generics.html#generic-classes https://www.typescriptlang.org/docs/handbook/generics.html#g... --- By the way, I think this may be the first emoji I've seen in a title on HN. It sure made it pop out of the list and catch my attention.