Typescript property does not exist on type {}

Question

I have the following code in Typescript. Why does the compiler throws an error?

var object = {};
Object.defineProperty(object, \'first\', {
         


        

Answer 1

In the given case, I would just rewrite it as

var object = {};

var withFirst =  {...object, get first() {return 37;}};

console.log('first property: ' + withFirst.first);