Is there a way to add typescript definintions to the "window" object

Question

Visual Studio has most of the typescript definitions built into it for the window object because most all of them work. However, "window.chrome" is not defined. How can I add this to the existing typescript definitions so I can get Visual Studio to compile?

var isChromium = window.chrome;

Answer 1

You can extend Window interface anywhere in your code:

interface Window {
    chrome:any; //you can go further and define a strict shape of this member
}

Interface declarations can be split into multiple files - compiler will merge all interface declarations with the same name into single definition.