Fuel

Sweetly simple dependency injection.

Features

Zero dependencies. No third party dependencies, not even the standard library. Pure Dart, works outside of Flutter.
Implicit registration. Dependencies will automatically register as singletons the moment they're injected. No need to explicitly register them all at the start of your program, consequentially making them lazy loaded.
Minimal implementation. Fits within ~2.5 kilobytes with a dead simple API and documentation, minification not included.
No build_runner. A simple abstraction that utilizes Dart's type system.

Factories?. petrol does not explicitly provide a method for registering factories. Provide the dependency as is since petrol expects you to not tightly couple dependencies and dependents a la dependency injection.
Asynchronous injectors? petrol will not explicitly provide support for asynchronous injectors. Since injectors in petrol are just functions, futures can be resolved within the injector via the .then method.
Eager loading? Call the use method at the start of your program a la traditional usage of service locators.
Updates? Likely not. The API will intentionally remain small to do one thing, and one thing well; more complex requirements are better served by the get_it package. It is unlikely bugs will occur with how short & simple the implementation of this package is.
Do I need this? Not necessarily. This package merely provides you with the convenience of having an architectural pattern already implemented for you that you can also implement yourself within a few lines of code.
What's with the name? Originally there was going to be a direct fuel injection joke but pub thought fuel was too similar to fuels. gas didn't sound right despite the shorter name. That left me with the name petrol.

# For Flutter projects
flutter pub add fuel

# Otherwise
dart pub add fuel

Licensed under the BSD 3 Clause license.