Angular get all form errors

Angular get all form errors

getAllErrors(form: FormGroup | FormArray): { [key: string]: any } | null {
    // validation via form model
    let hasError = false;
    const result = Object.keys(form.controls).reduce((acc, key) => {
      const control = form.get(key);
      // console.log('control', control);
      const errors = control instanceof FormGroup || control instanceof FormArray ? this.getAllErrors(control): control.errors;
      if (errors || control.status === 'INVALID') {
        acc[key] = errors;
        hasError = true;
      }
      return acc;
    }, {} as { [key: string]: any });
    return hasError ? result : null;
  }