get_it_injector_gen

get_it_injector_gen is a code generator package that complements get_it_injector by automating the generation of code for registering classes with the get_it package in Dart. This generator simplifies the process of dependency injection by generating the necessary code based on annotations from get_it_injector.

Why get_it_injector_gen?

For real-world projects, managing dependencies manually can become cumbersome. The goal of get_it_injector_gen is to automate the registration process, making it easy to configure and manage dependencies using the get_it package.

Features

• Flexible Registration: Annotate your classes with get_it_injector annotations to define whether they should be registered as factories, singletons, or lazy singletons. The generator will handle the code generation for you.

• Order of Injection: Define class name patterns to determine the order of injection, allowing you to control the sequence in which classes are injected.

• Grouping: Organize injectables into groups with their own priorities, providing a more fine-grained approach to dependency management.

Getting Started

1. Add the get_it_injector and get_it_injector_gen packages to your pubspec.yaml file:

   dependencies:
       get_it_injector: # latest version
   
   dev_dependencies:
       get_it_injector_gen: # latest version
       build_runner: # latest version
   

2. Configure the build runner to use get_it_injector_gen in your build.yaml file:

   targets:
       $default:
           builders:
               get_it_injector_gen:
                   generate_for:
                       - lib/**/*.dart
                   options:
                       # Add your options here
   

   All option's casing are formatted in snake_case

   Refer to the Settings Interface file for more information on the available options.

3. Feed your classes to the generator

   By Annotation

   import 'package:get_it_injector/get_it_injector.dart';
   
   @singleton
   class MySingletonService {
       // Implementation details...
   }
   

   By Configuration

   You can include all classes using the auto_register option.

   You can use groups, register, factories, singletons, lazy_singletons and priorities to filter the classes that should be registered. Each accept a list of regex patterns that will be used to match the class names.

   targets:
       $default:
           builders:
               get_it_injector_gen:
                   generate_for:
                       - lib/**/*.dart
                   options:
                       auto_register: true
                       groups:
                           - PATTERN # regex
                       register:
                           - PATTERN # regex
                       factories:
                           - PATTERN # regex
                       singletons:
                           - PATTERN # regex
                       lazy_singletons:
                           - PATTERN # regex
                       priorities:
                           - PATTERN # regex
   

   For more details on each input, refer to the Settings Interface file

4. Add the setup function

   import 'package:get_it/get_it.dart';
   import 'package:get_it_injector/get_it_injector.dart';
   
   import 'FILE_NAME.config.dart'; // replace FILE_NAME with the name of _this_ file
   
   final getIt = GetIt.instance;
   
   @setup
   Future<void> setup() {
      getIt.init();
   }
   

5. Run the build command to generate the registration code:

   # using flutter
   flutter pub run build_runner build --delete-conflicting-outputs
   
   # using dart
   pub run build_runner build --delete-conflicting-outputs
   

Issues and Contributions

If you encounter any issues or have suggestions for improvements, please feel free to open an issue or contribute to the project on GitHub.

A note about build_runner

The build runner performance can be optimized by flattening your project structure, especially if you have nested folders. Consider using the exclude option in build.yaml to exclude unnecessary folders from the scanning process.

targets:
    $default:
        builders:
            get_it_injector_gen:
                generate_for:
                    include:
                        - lib/**/*.dart
                    exclude:
                        - lib/ui/**

generate_for.include & generate_for.exclude are part of the build.yaml format. You can find more information here

License

This software is released under the Apache 2.0 license. https://www.apache.org/licenses/LICENSE-2.0