Typescript generics extending class and interface

Question

I have a Typescript class which includes a generic which needs to extend another class and implement an interface. Here is an example

interface IHasImage {
          


        

Answer 1

Typescript is not so restrictive as Java or C# so you can do things like that:

interface IHasImage {
    imageUrl():string; 
}

class Model {
}

// use the Model class like an interface
interface IHasImageModel extends IHasImage, Model{
}

class View {
    constructor(arg :T){
       arg.imageUrl();
    }
}

Edit: In TypeScript 1.6 you can use Intersection types:

interface IHasImage {
    imageUrl():string; 
}

class Model {
}

class View {
    constructor(arg :T){
       arg.imageUrl();
    }
}