routesSort function
Implementation
List<String> routesSort(List<String> lines) {
var routes = <String>[];
var lines2 = <String>[];
lines2.addAll(lines);
for (var line in lines2) {
if (line.contains('static const')) {
routes.add(line);
lines.remove(line);
}
}
routes.sort();
lines.insertAll(lines.length - 1, routes);
return lines;
}