TypeScript: using dynamic properties

Although I really like static typing and the other great features that TypeScript brings to JavaScript, sometimes I just want to profit from the dynamic nature of JavaScript.

I had a JavaScript/TypeScript object where I wanted to set a property value:

	var product = {};
	product.Name = "Duvel";

view raw productfailing.ts hosted with ❤ by GitHub

In TypeScript, this generates an error:

The property 'prop' does not exist on value of type '{}'

To fix it, I had to add a type annotation:

	var product:any = {};
	product.Name = "Duvel";

view raw productok.ts hosted with ❤ by GitHub