Dave Dependency Injector

Dave is a very simple and lightweight dependency injector for TypeScript inspired by C#'s DI.

Installation

Run the following in your project directory to install Dave: npm i dave-di

Usage

Dependency Registration

Dependencies can be registred as:

• Singleton: a single instance is used for the entire DI scope.
• Transient: a new instance is created at every injection call.

Dependencies can be registered through decorators and DI method calls.

Registration with Decorators

Register dependencies with @InjectableSingleton and @InjectableTransient():

import { InjectableSingleton, InjectableTransient } from "dave-di";

@InjectableSingleton()
class Logger {
  // ...
}

@InjectableTransient()
class UserService {
  // ...
}

Registration with DI Method Calls

import { DI } from "dave-di";

class Logger {
  // ...
}

class UserService {
  // ...
}

DI.addSingleton(Logger);
DI.addTransient(UserService);

Dependency Injection

Dependencies can be injected through the inject() function or DI.getService():

class UserService {
  private logger = inject(Logger);
}

// or

const logger = DI.getService(Logger);

Build

To build the project simply run npm run build or npm run build:dev for the source map build.