How to watch for variable changes at all levels in NodeJS

Question

I have this variable in NodeJS:

var toWatch = {
    count: 3,
    name: {
        first: "Foo",
        last: "Bar"
    }
}

And I want to fire a function when any value of it changes. For example, toWatch.name.first = "ABC" and toWatch.newProperty = 123 would both trigger this function.

How can I implement this function?

Answer 1

You can use Proxy to observe set and get at a JavaScript object.