Is there an equivalent to “sealed” or “final” in TypeScript?

Question

I\'m trying to implement a method in a super class that should be available for use, but not changeable, in sub classes. Consider this:

export abstract clas         


        

Answer 1

// I use this workaround:

export default class CreateHandler extends BaseHandler {
    // final prop used as method
    public readonly create = (blueprint: Blueprint): Response => {
        return blueprint.create();
    };

    // normal method
    public store(blueprint: Blueprint): Response {
        return this.response(blueprint.create());
    }
}