isBot method

bool isBot(String? userAgent)

Whether userAgent belongs to a known crawler.

null or empty User-Agents count as regular users, so real visitors never accidentally get the bot response.

Implementation

bool isBot(String? userAgent) {
  if (userAgent == null || userAgent.isEmpty) return false;
  final ua = userAgent.toLowerCase();
  final override = _override;
  if (override != null) return override.any(ua.contains);
  return _defaultMatcher.hasMatch(ua) ||
      _extra.any((pattern) => ua.contains(pattern.toLowerCase()));
}