Oref

English

简体中文

English

简体中文

Appearance

OrefSignals for Flutter, without the ceremony

Lightweight reactive primitives that rebuild only what matters.

Get Started
Core Concepts

Signal-first API

Create reactive values with `signal()` and update via `.set(...)`.

Computed + effects

Derive values with `computed()` and react with `effect()`.

Async data built-in

`useAsyncData()` handles loading, success, and error states.

Collections helpers

Reactive List/Map/Set wrappers for complex UI state.

Why Oref

Predictable reactivity

Reads track dependencies, writes notify subscribers. Nothing hidden.

Widget-first ergonomics

Signals live with widgets. Use SignalBuilder to scope rebuilds.

Composable primitives

Signals, computed values, effects, and batching compose cleanly.

3-Step Quick Start ​

1. Install ​

bash
flutter pub add oref

2. Create a signal ​

dart
final count = signal(context, 0);

3. Derive and update ​

dart
final doubled = computed(context, (_) => count() * 2);
count.set(count() + 1);
Need recipes?

Check the guides for patterns like async data, batching, and collections.

Recipes to Explore ​

Form state

Keep input state and validation derived from signals.

List filtering

Use computed values to derive filtered views from large lists.

Async loading

Handle loading and errors with useAsyncData().

Ready to dive in? Start with Getting Started.