Method #extractLabels

packages/graph/src/Steps.ts:3114–3123

(item: unknown, variable: string)

  }

  #extractLabels(item: unknown, variable: string): string[] | undefined {
    const value = this.#extractValue(item, variable);
    if (value instanceof Vertex) {
      return [value.label];
    }
    if (value instanceof Edge) {
      return [value.label];
    }
    return undefined;
  }

  #extractProperty(item: unknown, variable: string, property: string): unknown {
    const value = this.#extractValue(item, variable);