Angular 4: How to watch an object for changes?

Question

ETA: I know that there are various ways to watch my form for changes. That is not what I am trying to do. As the title says, I am asking how to watch for change

Answer 1

visit https://github.com/cartant/rxjs-observe. it bases on rxjs and proxy.

import { observe } from "rxjs-observe";

const instance = { name: "Alice" };
const { observables, proxy } = observe(instance);
observables.name.subscribe(value => console.log(name));
proxy.name = "Bob";