errno 1.2.0

Defines system error code constants for the OSs that the Dart platform is running on

example/example.dart

import 'dart:io';

import 'package:errno/errno.dart';

void main() {
  try {
    var lst = Directory("My Documents").listSync();
    print(lst);
  } on FileSystemException catch (exc) {
    if (exc.osError?.errorCode == WindowsErrors.pathNotFound) {
      print("The directory does not exist.");
    } else {
      rethrow;
    }
  }
}