Anytime I’ve come across the need to do this, I’ve found a class is a better and less complicated solution.
I really like the pattern of value objects from Domain Driven Design. Create a class that stores the value, for example email address.
In the class constructor, take a string and validate it. Then anywhere that you need a valid email address, have it accept an instance of the Email class.
As far as I understand classes are the only real way to get nominal typing in TypeScript.
I really like the pattern of value objects from Domain Driven Design. Create a class that stores the value, for example email address.
In the class constructor, take a string and validate it. Then anywhere that you need a valid email address, have it accept an instance of the Email class.
As far as I understand classes are the only real way to get nominal typing in TypeScript.