# nodeCount

Get the node count.

## Signatures

```ts
export declare const nodeCount: <N, E, T extends Graph.Kind, Err, R>(ref: RefGraph<N, E, T, Err, R>) => RefSubject.Computed<number, Err, R>;
```

## Why

Get the node count. The operation remains attached to the RefSubject's versioned state boundary.

## Ownership and lifetime

The node count view retains no independent state. An Effect read samples the source once; Fx
observation follows later pushes and its observing Scope owns subscription cleanup.