TypeScript - Inline Type Annotation

Instead of creating a new interface you can annotate anything you want inline using :{ /*Structure*/ }. The previous example presented again with an inline type:

  


        var age: number = 32; // number variable
        var name: string = "John";// string variable
        var isUpdated: boolean = true;// Boolean variable


        var name: {
        first: string;
        second: string;
        };
        name = {
        first: 'John',
        second: 'Doe'
        };

        name = {           // Error : `second` is missing
        first: 'John'
        };
        name = {           // Error : `second` is the wrong type
        first: 'John',
        second: 1337
        };