https://github.com/leonadler/lightweight-di

Lightweight dependency injection for TypeScript and JavaScript
https://github.com/leonadler/lightweight-di

dependency-injection dependency-tree node typescript-design-patterns typescript-di typescript-library

Last synced: 10 months ago
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Lightweight dependency injection for TypeScript and JavaScript

• Host: GitHub
• URL: https://github.com/leonadler/lightweight-di
• Owner: leonadler
• License: mit
• Created: 2017-06-21T21:38:07.000Z (about 9 years ago)
• Default Branch: master
• Last Pushed: 2024-09-03T19:44:49.000Z (almost 2 years ago)
• Last Synced: 2025-05-27T05:07:37.876Z (about 1 year ago)
• Topics: dependency-injection, dependency-tree, node, typescript-design-patterns, typescript-di, typescript-library
• Language: TypeScript
• Homepage:
• Size: 149 KB
• Stars: 4
• Watchers: 1
• Forks: 0
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# Lightweight Dependency Injection

[![npm version](https://badge.fury.io/js/lightweight-di.svg)](https://badge.fury.io/js/lightweight-di)

[![travis build status](https://travis-ci.org/leonadler/lightweight-di.svg)](https://travis-ci.org/leonadler/lightweight-di/)

A dependency injection library for node and the browser, based on [Angulars DI](https://angular.io/guide/architecture#dependency-injection).

Optimized for use via [TypeScript](https://github.com/Microsoft/TypeScript#readme) or [babel](https://github.com/babel/babel#readme) [decorators](https://babeljs.io/docs/plugins/transform-decorators/).

## Getting started

### 1. Install the library in your project

```sh

npm install --save lightweight-di

```

### 2. Import the required decorators from the package

```typescript

// TypeScript / Babel / Webpack

import { Injectable } from 'lightweight-di';

// Node.js / Browserify

const { Injectable } = require('lightweight-di');

```

### 3. Decorate classes with dependencies

```typescript

@Injectable

class FileLogger {

    constructor(private fs: FileSystem) { }

    log(message: string) {

        fs.appendToFile('app.log', message);

    }

}

```

### 4. Bootstrap your application entry point with `Injector`

```typescript

import { Injector } from 'lightweight-di';

const injector = Injector.resolveAndCreate([App, Dependency1, Dependency2]);

injector.get(App).run();

```

## Documentation & Examples

For the full API check out the [documentation](https://github.com/leonadler/lightweight-di/blob/master/docs/api.md)

or the [examples](https://github.com/leonadler/lightweight-di/blob/master/docs/examples) on GitHub.

## License

[MIT](https://github.com/leonadler/lightweight-di/blob/master/LICENSE)