FieldCollectionPipeline class exported ✓ 100.0%

export class FieldCollectionPipeline {
  constructor(readonly detectors: ReadonlyArray<PageDetector>) {}

  /** Run all detectors in order and return the concatenated list of fields. */
  run(): FormField[] {
    return this.detectors.flatMap((d) => d.detect());
  }

  /** Returns a new pipeline with the given detector appended. */
  with(detector: PageDetector): FieldCollectionPipeline {
    return new FieldCollectionPipeline([...this.detectors, detector]);
  }

  /** Returns a new pipeline excluding detectors with any of the given names. */
  without(...names: string[]): FieldCollectionPipeline {
    return new FieldCollectionPipeline(
      this.detectors.filter((d) => !names.includes(d.name)),
    );
  }

  /** Returns a new pipeline with detectors reordered by name. */
  withOrder(names: string[]): FieldCollectionPipeline {
    const ordered = names
      .map((n) => this.detectors.find((d) => d.name === n))
      .filter((d): d is PageDetector => d !== undefined);
    return new FieldCollectionPipeline(ordered);
  }
}