signals_core

Version: 7.0.0

Installation#

dart pub add signals_core

The signals_core package exposes the foundational building blocks of the entire Signals reactive framework. It is 100% platform-agnostic, zero-dependency, and can be integrated into any Dart codebase—including shelf servers, database layers, command-line scripts, or serverless functions.

Key Features#

• 📐 Signals & Computeds: Declare reactive variables and lazy, cacheable derived states.
• ⚡ Effects: Trigger side effects (like saving to databases, logging, or writing to files) automatically in response to dependency changes.
• 🗂 Advanced Collections: Built-in reactive collections including listSignal, setSignal, mapSignal, and iterableSignal.
• 🕒 Async Bindings: Easily bind streams and futures directly to reactive states using futureSignal and streamSignal.
• 🔄 Undo/Redo Change Stack: Track value histories and enable instant undo/redo functionality using changeStack.

Quick Start#

import 'package:signals_core/signals_core.dart';

void main() {
  final count = signal(0);
  final doubleCount = computed(() => count.value * 2);

  effect(() {
    print('Double count: ${doubleCount.value}');
  });

  count.value = 5; // Prints: Double count: 10
}

Package Contents#