Function sub

sub<T>(node: NodeRef<T>, subscription: Subscription<T>): UnsubscribeHandle
Subscribes to the values published in the referred node.
Type Parameters
- T
Parameters
- node: NodeRef<T>
  the cell/signal to subscribe to.
- subscription: Subscription<T>
  the callback to execute when the node receives a new value.
Returns UnsubscribeHandle
a function that, when called, will cancel the subscription.
Example
```
const signal$ = Signal<number>()
const r = new Realm()
const unsub = r.sub(signal$, console.log)
r.pub(signal$, 2)
unsub()
r.pub(signal$, 3)
```
- Defined in realm.ts:1364