WindDebugResolver

import 'package:flutter/widgets.dart';
import 'package:wind_kit_diagnostics_contracts/wind_kit_diagnostics_contracts.dart';

void emitWindBlock(StringBuffer buffer, Element element) {
  final WindDebugResolver? resolver = WindDebugRegistry.current;
  if (resolver == null) return; // wind_kit is not in this app, or this is a release build.

  final Map<String, Object?> data = resolver.resolve(element);
  if (data.isEmpty) return; // Nothing to report for this element.

  buffer.writeln('wind:');
  data.forEach((String key, Object? value) {
    buffer.writeln('  $key: $value');
  });
}

import 'package:flutter/widgets.dart';
import 'package:wind_kit_diagnostics_contracts/wind_kit_diagnostics_contracts.dart';

class MyStyleResolver implements WindDebugResolver {
  const MyStyleResolver();

  @override
  Map<String, Object?> resolve(Element element) {
    final Widget widget = element.widget;
    if (widget is! MyStyledBox) return const <String, Object?>{};

    return <String, Object?>{
      'className': widget.className,
      'brightness': 'light',
    };
  }
}

class MyStyledBox extends StatelessWidget {
  const MyStyledBox({super.key, required this.className});

  final String className;

  @override
  Widget build(BuildContext context) => const SizedBox.shrink();
}