Function findNode

packages/effect/src/Graph.ts:581–591

(
  graph: Graph<N, E, T> | MutableGraph<N, E, T>,
  predicate: (data: N) => boolean
)

 * @category getters
 */
export const findNode = <N, E, T extends Kind = "directed">(
  graph: Graph<N, E, T> | MutableGraph<N, E, T>,
  predicate: (data: N) => boolean
): Option.Option<NodeIndex> => {
  for (const [index, data] of graph.nodes) {
    if (predicate(data)) {
      return Option.some(index)
    }
  }
  return Option.none()
}

/**
 * Finds all nodes that match the given predicate.