feature_core 1.2.0

Dart package for flexible retrieving and managing feature flags.

feature_core

Manages feature flags in your application. This is the core library.

Additional packages

There are several additional libraries created to make this one work. I hope this list will be expanded in the future.

• feature_flutter - integration and management of features in the flutter application.

Wrappers

• feature_wrapper_retain - adds ability to locally save state of features

Feature sources

• feature_source_firebase - implementation for remote firebase config

Concept

There are three main entities:

• FeatureAbstract represents some kind of customization for the application.

• FeaturesProvider implements a function that retrieves functions from some repository.

• FeaturesManager manages your providers and handles their requests to pull.

Usage

Creating a feature

To create a feature, just inherit from the FeatureGeneric<T> class.

class UseNewComponent extends FeatureGeneric<bool> {
  const UseNewComponent(bool value) : super(key: 'some_new_component', value: value);
}

Creating a feature provider

To add your own feature source, inherit from FeatureProvider and implement the pullFeatures() method. The rest is up to you.

Important note: if you need to update the features from within FeatureProvider (for example, if you get updates from the backend), use requestPullFeatures() to reacquire the features.

Creating the manager

First, create a FeaturesManager and populate it with your sources.

Use with Flutter

See the feature_flutter package to integrate features into the Flutter application.