CODEWITHSUNDEEP
typescript
wjohnsto
wjohnsto

Reputation: 4463

Is there a way to put a static enum on a class?

I am currently writing a class that I would like to bundle with an enumerator.

example code:

class MyClass {
    static enum MyType {
        State1, State2, State3
    };
}

This way when I have some method foo I can define it as follows:

function CreateMyClass(type: MyClass.MyType) {
   ...
}

Perhaps I do not have the syntax correct (or maybe I'm going about this in the wrong way)? Is this possible, or is there a workaround so that I do not have to create an interface for a static variable in order to accept the enum type in a method parameter?

Upvotes: 2

Views: 575

Answers (2)

Matěj Pokorný
Matěj Pokorný

Reputation: 17875

What about module?

module M {
    export enum MyType {
        State1, State2, State3
    };

    export class MyClass {
        constructor(param: string) {
            alert(param);
        }
    }
}

function CreateMyClass(type: M.MyType): M.MyClass {
    if (type === M.MyType.State1)
        return new M.MyClass("Hi!");
    else
        return new M.MyClass("Hello!");
}

Upvotes: 1

Fenton
Fenton

Reputation: 251062

You can't define the enum within the class, but you can add it elsewhere and use it within the class.

enum MyType {
    State1, State2, State3
};

class MyClass {
    constructor(private type: MyType) {

    }
}

var myInstance = new MyClass(MyType.State2);

Upvotes: 1

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