Hybrid Types As we mentioned earlier, interfaces can describe the rich types present in real world JavaScript. Because of JavaScript’s dynamic

Using with export = or import An important rule is that export and import declarations

Value-based elements Value based elements are simply looked up by identifiers that are in scope.

Create a new project Choose File Choose New Project Choose Visual C#

Set up the build

Test Run the project. You should see a message when you type in the input boxes:

Deep Dive For seasoned authors interested in the underlying mechanics of how declaration files work, the

Red flags

Global Variables Documentation The global variable foo contains the number

Overloaded Functions Documentation The getWidget function accepts a number and returns