A widget that detects the visibility of its child and notifies a callback.
A Dart library containing convenient extension methods on basic Dart objects.
A URL-safe base64 encoding for UUIDv4 stripped of padding. Useful when embedding short random UUIDs in URLs.
Obtain Access credentials for Google services using OAuth 2.0
A list with helper methods to programmatically scroll to an item.
Auxiliary classes for reliably running a periodic task in a long-running process such as web-server.
Tuple data structure
Flutter plugin for Google Mobile Ads, supporting banner, interstitial (full-screen), rewarded and native ads
A Vector Math library for 2D and 3D applications.