Safety StreamBuilder for Flutter

For lazy, SafetyStreamBuilder can use with just a little confidence.

Usage

In StreamBuilder, it is necessary to finely implement whether AsyncSnapshot contains data or an error has occurred. SafetyStreamBuilder provides default blank widget and error display widget and direct data. (hiding AsyncSnapshot)

Before: Using Dart standard StreamBuilder

StreamBuilder<String>(
  stream: stream,
  builder: (BuildContext context, AsyncSnapshot<String> snapshot) {
    if (!snapshot.hasData) {
      return Container();
    }
    if (snapshot.hasError) {
      return Icon(Icons.error_outline);
    }
    return Text(snapshot.data);
  },
)

After: Using SafetyStreamBuilder

SafetyStreamBuilder<String>(
  stream: stream,
  builder: (BuildContext context, String message) => Text(message),
);

Libraries

safety_stream_builder

Dart

dart:ui
Built-in types and core primitives for a Flutter application. [...]

Core

dart:async
Support for asynchronous programming, with classes such as Future and Stream. [...]
dart:collection
Classes and utilities that supplement the collection support in dart:core. [...]
dart:convert
Encoders and decoders for converting between different data representations, including JSON and UTF-8. [...]
dart:core
Built-in types, collections, and other core functionality for every Dart program. [...]
dart:developer
Interact with developer tools such as the debugger and inspector. [...]
dart:math
Mathematical constants and functions, plus a random number generator. [...]
dart:typed_data
Lists that efficiently handle fixed sized data (for example, unsigned 8 byte integers) and SIMD numeric types. [...]

VM

dart:io
File, socket, HTTP, and other I/O support for non-web applications. [...]
dart:isolate
Concurrent programming using isolates: independent workers that are similar to threads but don't share memory, communicating only via messages. [...]