A widget that detects the visibility of its child and notifies a callback.
Function for sanitizing HTML to prevent XSS by restrict elements and attributes to a safe subset of allowed values.
Runtime library for protocol buffers support. Use https://pub.flutter-io.cn/packages/protoc_plugin to generate dart code for your '.proto' files.
Obtain Access credentials for Google services using OAuth 2.0
Auxiliary classes for reliably running a periodic task in a long-running process such as web-server.
A URL-safe base64 encoding for UUIDv4 stripped of padding. Useful when embedding short random UUIDs in URLs.
PEM encoding/decoding of textual keys following RFC 7468, supporting both lax/strict-mode, and certificates chains of concatenated PEM blocks.
Quiver is a set of utility libraries for Dart that makes using many Dart libraries easier and more convenient, or adds additional functionality.
Tuple data structure