Method _getDefaultError

src/cdk/stepper/stepper.ts:259–261

()

  private _customError = signal<boolean | null>(null);

  private _getDefaultError() {
    return this.interacted && !!this.stepControl && isInvalid(this.stepControl);
  }

  constructor() {
    const stepperOptions = inject<StepperOptions>(STEPPER_GLOBAL_OPTIONS, {optional: true});