typescript interface initialization

Question

My level of typescript is 'ABSOLUTE BEGINNER' but I have a good OOP background. I am building an with typescript that reference an external t.ds library that contains the following interface:

interface ISimpleObject {     foo: string;     bar?: any; } 

Now, if I want to call a method that has an IRequestConfig parameter, how do I create one? I can see different options:

1. Create a simple implementation of ISimpleObject. I don't like this approach because it looks like boilerplate code to me

2. don't initialize the object (I fear this could break something...):

   var x :IsimpleObject; x.bar = 'xxx'; callMethod(x);

3. Cast a pojo:

   var x :IsimpleObject = <IsimpleObject>{foo: 'yyy', bar:'xxx'};

   I don't like this approach either because it doesn't enforce type safety...

I guess this is a fairly trivial question and I am missing something trivial about typescript.

Answer 1

Typescript2:

const simpleObject = {} as ISimpleObject;