Method deleteIf

packages/core/src/lib/list-unit.ts:303–315

* Deletes items from the list-value where the predicate returns `true`. \ * Dispatches a new copy of the value, without mutating the current-value. \ * It doesn't modify the length of the list as these indices are only deleted, not removed. * * It only works if the Unit is not fr

(predicate: (item: Item, index: number) => boolean)

   * @category Custom ListUnit
   */
  deleteIf(predicate: (item: Item, index: number) => boolean): Item[] {
    if (this.isFrozen || typeof predicate !== 'function' || this.isEmpty) {
      return [];
    }

    const indicesToBeDeleted = [];
    this.value().forEach((item, index) => {
      if (predicate(item, index)) {
        indicesToBeDeleted.push(index);
      }
    });
    return this.delete(...(indicesToBeDeleted as [number, ...number[]]));
  }

  /**
   * Finds items of the list that have a direct child property