/// Exception thrown when an invalid environment is provided to [ConfigLoader].
class InvalidEnvironmentException implements Exception {
  /// The invalid environment that was provided.
  final String environment;

  /// Creates an [InvalidEnvironmentException] with the provided environment.
  InvalidEnvironmentException(this.environment);

  @override
  String toString() {
    return 'InvalidEnvironmentException: Invalid environment "$environment". '
        'Valid environments are: dev, prod';
  }
}