Function Signal

Signal<T>(init?: NodeInit<T>, distinct?: Distinct<T>): NodeRef<T>
Defines a new stateless node and returns a reference to it. Once a realm instance publishes or subscribes to the node, an instance of that node it will be registered in the realm.
Type Parameters
- T
Parameters
- init: NodeInit<T> = noop
  an optional function that will be called when the node is registered in a realm. Can be used to create subscriptions and define relationships to other nodes. Any referred nodes will be registered in the realm automatically.
- distinct: Distinct<T> = false
  true by default. The node emits values that are different from the previous value. Optionally, a custom distinct function can be provided if the node values are non-primitive.
Returns NodeRef<T>
Example
```
const foo$ = Signal<string>(true, (r) => {
  r.sub(foo$, console.log)
})
const r = new Realm()
r.pub(foo$, 'bar') // the subscription will log 'bar'
```
- Defined in realm.ts:1321