Method _reduceChildren

packages/forms/src/model/form_group.ts:645–654

@internal

(
    initValue: T,
    fn: (acc: T, control: TControl[K], name: K) => T,
  )

  /** @internal */
  _reduceChildren<T, K extends keyof TControl>(
    initValue: T,
    fn: (acc: T, control: TControl[K], name: K) => T,
  ): T {
    let res = initValue;
    this._forEachChild((control: TControl[K], name: K) => {
      res = fn(res, control, name);
    });
    return res;
  }

  /** @internal */
  override _allControlsDisabled(): boolean {