How to make the spring work in an object?

[vhtmui]

I want do this, but it doesn't work, no motion played.

	let a = {
		x: spring(0)
	}

This is what i try:
Demo

[specialdoom]

You either destruct your object let {x} = {x: spring(0)} or subscribe to it a.x.subscribe(...). You are not able to do a.$x.
Here

[brunnerh]

You generally should use subscribe manually, it is prone to leaks.
(If you do, call the returned function at some point to clean up the subscription.)