Add TypeScript code Right click on src and click New Item. Then choose TypeScript File and name

Update tsconfig.json Now that Angular 2 and its dependencies are installed, we need to enable TypeScript’s experimental support for decorators

Object destructuring You can also destructure objects: let o = {

Call the script from a view In the Solution Explorer, open Views

Weeding out Errors Like we mentioned, it’s not unexpected to get error messages after conversion. The important thing is to actually go one

Decorator Factories If we want to customize how a decorator is applied to a declaration, we can write a decorator factory. A Decorator Factory

Reusable Types (Type Aliases) Documentation Anywhere a greeting is expected, you can provide

Symbol.hasInstance A method that determines if a constructor object recognizes an object as one of the constructor’s instances

Typing the function Let’s add types to our simple examples from earlier: function

Re-exports Often modules extend other modules, and partially expose some of their features. A re-export does not import it locally, or introduce