Merging Namespaces with Classes This gives the user a way of describing inner classes.

Debug In Edge, press F12 and click the Debugger tab. Look in the first localhost folder, then src/app.ts

for..of statements for..of loops over an iterable object, invoking the Symbol.iterator property on the

Compiler Options Option Type Default Description --allowJs

Export statements Export statements are handy when exports need to be renamed for consumers, so the above example can be written as:

Intrinsic elements Intrinsic elements are looked up on the special interface JSX.IntrinsicElements. By default, if this interface

User-Defined Type Guards Notice that we had to use type assertions several times. It would be much better if once we performed the check, we

Write some code Let’s write our first TypeScript file using Knockout. First, create a new file in your src directory named hello

Minimal project Let’s start out with a new directory. We’ll name it proj for now, but you can change it to whatever you want.

MSBuild Update project file to include locally installed Microsoft.TypeScript.Default.props (at the top) and Microsoft.TypeScript