Flutter custom typography with smart defaults and configuration using Dart's call() method

typography.dart

extension on BuildContext {
  TextStyle get paragraph => TextStyle(fontSize: 22, color: Colors.grey[900]);
}

Widget build(BuildContext context) {
  return Column(
    children: [
      Text("Hello world", style: context.paragraph),
      Text("Hello world, again", style: context.paragraph(color: Colors.red)),
    ],
  );
}

ztypo.dart

import 'dart:ui' as ui show Shadow, FontFeature, TextLeadingDistribution;

extension Call on TextStyle {

  TextStyle call({
    bool? inherit,
    Color? color,
    Color? backgroundColor,
    double? fontSize,
    FontWeight? fontWeight,
    FontStyle? fontStyle,
    double? letterSpacing,
    double? wordSpacing,
    TextBaseline? textBaseline,
    double? height,
    ui.TextLeadingDistribution? leadingDistribution,
    Locale? locale,
    Paint? foreground,
    Paint? background,
    List<ui.Shadow>? shadows,
    List<ui.FontFeature>? fontFeatures,
    TextDecoration? decoration,
    Color? decorationColor,
    TextDecorationStyle? decorationStyle,
    double? decorationThickness,
    String? debugLabel,
    String? fontFamily,
    List<String>? fontFamilyFallback,
    String? package,
    TextOverflow? overflow,
  }) {
    return copyWith(
      inherit: inherit,
      color: color,
      backgroundColor: backgroundColor,
      fontSize: fontSize,
      fontWeight: fontWeight,
      fontStyle: fontStyle,
      letterSpacing: letterSpacing,
      wordSpacing: wordSpacing,
      textBaseline: textBaseline,
      height: height,
      leadingDistribution: leadingDistribution,
      locale: locale,
      foreground: foreground,
      background: background,
      shadows: shadows,
      fontFeatures: fontFeatures,
      decoration: decoration,
      decorationColor: decorationColor,
      decorationStyle: decorationStyle,
      decorationThickness: decorationThickness,
      debugLabel: debugLabel,
      fontFamily: fontFamily,
      fontFamilyFallback: fontFamilyFallback,
      package: package,
      overflow: overflow,
    );
  }

}