Contains code to deal with internationalized/localized messages, date and number formatting and parsing, bi-directional text, and other internationalization issues.
Collections and utilities functions and classes related to collections.
Utility functions and classes related to the 'dart:async' library.
Library for defining parsers for parsing raw command-line arguments into a set of options and values using GNU and POSIX style options.
A class for parsing strings using a sequence of patterns.
Utilities for working with Foreign Function Interface (FFI) code.
A portable Markdown library written in Dart that can parse Markdown into HTML.
Runtime library for protocol buffers support. Use https://pub.flutter-io.cn/packages/protoc_plugin to generate dart code for your '.proto' files.
Support for specifying test expectations via an extensible Matcher class. Also includes a number of built-in Matcher implementations for common cases.