dvStudioGraphRoutes function

List<Map<String, Object?>> dvStudioGraphRoutes(String? root)

The routes the project graph in root lists, or none when there is no graph to read.

Implementation

List<Map<String, Object?>> dvStudioGraphRoutes(String? root) {
  if (root == null) return const <Map<String, Object?>>[];
  final File graph = File('$root${Platform.pathSeparator}graph.json');
  try {
    final Object? decoded = jsonDecode(graph.readAsStringSync());
    final Object? routes = decoded is Map ? decoded['routes'] : null;
    return <Map<String, Object?>>[
      if (routes is List)
        for (final Object? route in routes)
          if (route is Map && route['path'] is String)
            route.cast<String, Object?>(),
    ];
  } on Object {
    return const <Map<String, Object?>>[];
  }
}