toJson method

Implementation

Map<String, Object> toJson() {
  _validateColor('primaryColor', primaryColor);
  _validateColor('backgroundColor', backgroundColor);
  _validateColor('textColor', textColor);
  final radius = cornerRadius;
  if (radius != null && (!radius.isFinite || radius < 0 || radius > 40)) {
    throw ArgumentError.value(
      radius,
      'cornerRadius',
      'must be between 0 and 40',
    );
  }

  return {
    if (primaryColor case final value?) 'primaryColor': value,
    if (backgroundColor case final value?) 'backgroundColor': value,
    if (textColor case final value?) 'textColor': value,
    if (radius != null) 'cornerRadius': radius,
  };
}