flutter_gate_core #

Core policy and feature flag engine for Flutter. Pure Dart — no Flutter SDK required.

Part of the flutter_gate monorepo.

Installation #

dependencies:
  flutter_gate_core: ^0.1.0

For widgets and BuildContext extensions, use flutter_gate instead — it re-exports this package.

Usage #

import 'package:flutter_gate_core/flutter_gate_core.dart';

void main() {
  gate.policy<Post>(() => PostPolicy());
  gate.define(const DarkModeFeature());

  if (gate.allows('update', user: 'alice', model: Post('alice'))) {
    // authorized
  }
}

API #

• Gate / gate — singleton engine
• Policy — authorization rules per model type
• Feature / AsyncFeature — feature flag definitions
• GateContext — scoped user context
• Hooks, annotations, and testing utilities

Documentation #

Full guides: flutter_gate docs

• Getting started
• Policies
• Feature flags