Typescript definitions: how to declare class inside class

Question

I have two javascript classes, one called AmazingMultiplier and one called AmazingAdder. I am struggling with writing typescript definition of AmazingAdder. The javascript file, looks like the following:

MyModule.AmazingAdder = function(options){
     //some amazing code

 };

MyModule.AmazingAdder.Statuses={
   success: 1,
   failure: 2
};

I am not sure how to declare the statuses object in my typescript definitions file. My d.ts file looks like:

declare module MyModule
{
  export class AmazingMultiplier
  {
       result: number;
       constructor(params: any?)
  }

 export class AmazingAdder
  {
     constructor(params: any?)
     class Statuses
     {
        success: number,
        failure: number
     }
  }

}

However I get unexpected token for 'class' where Statuses are defined. Any assistance would be appreciated. I have read through the tutorials but don't understand how I would do this.

possible duplicate of Any way to nest classes in typescript? — Qantas 94 Heavy
– Qantas 94 Heavy, Commented Feb 25, 2015 at 10:57
I don't really understand what you're trying to do. Can you be more specific as to what you're trying to achieve? — George Nemes
– George Nemes, Commented Feb 25, 2015 at 11:45
@George Nemes. It is a contrived example. All I want to do is learn how to declare a class within another class in typescript. The duplicate link has helped though and seems to work — Matthew Holmes
– Matthew Holmes, Commented Feb 25, 2015 at 12:07

David Sherret · Accepted Answer · 2015-02-25 14:46:19Z

3

You can create a class and module with the same name. Also, you'll want to use an enum for Statuses:

declare module MyModule {
    class AmazingAdder {
        constructor(params?: any);
    }
    module AmazingAdder {
        enum Statuses {
            success = 1,
            failure = 2,
        }
    }
}

answered Feb 25, 2015 at 14:46

David Sherret

108k28 gold badges197 silver badges190 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

basarat Over a year ago

There are other potential solutions. But this is the most idiomatic one that I would do myself

Collectives™ on Stack Overflow

Typescript definitions: how to declare class inside class

1 Answer 1

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related