Object Spread and Classes don't mix

spreadAndClass.ts

class MyClass {
  greet: () => console.log('Hello World')
}

const myObject = {
   ...new MyClass()
}

// will throw "myObject.greet" is not a function as the greeting is on the prototype, not the acutal instantiated class object
myObject.greet()

spreadAndFactory.ts

const createMyClass = () => ({
  greet: () => console.log('Hello World');
});

const myObject = {
  ...createMyClass()
}

// will log "Hello World"
myObject.greet()