Simple custom Angular (Angular2) Pipe that extends Number

We have a lot of code that looks like this in our new Angular (Angular2) module:

The main reason is that we just want to display numbers in 1.2 million, not 1200,000.

So obviously, we think about wrapping this in a custom Pipe function.

number is a Pipe name for the DecimalPipe class.  So we can extend that and borrow all the work the DecimalPipe does with parsing and formatting.

The Angular2 template then simplifies down to:

It is so nice to work with a Proper Object-Oriented language like TypeScript here.  Look at that extends.  <3