BotDetector class

Detects crawlers and preview bots by their User-Agent header.

const detector = BotDetector();
detector.isBot('Googlebot/2.1 (+http://www.google.com/bot.html)'); // true
detector.isBot('Mozilla/5.0 ... Chrome/126.0 Safari/537.36');      // false

Constructors

BotDetector({List<String> extraPatterns = const []})

Uses defaultPatterns, optionally extended with extraPatterns.

const

BotDetector.only(List<String> patterns)

Uses only patterns and ignores defaultPatterns completely.

const

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

isBot(String? userAgent) → bool

Whether userAgent belongs to a known crawler.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Constants

defaultPatterns → const List<String>

Lower-case User-Agent fragments of the crawlers that matter for SEO: search engines, social-media link previews and AI crawlers, plus a few generic markers.