qs-di-ts

Dependency Injection for Typescript

Lightweight wrap of di.js for TypeScript.

Install

npm install qs-di-ts

Usage

You need to use

 "emitDecoratorMetadata": true,
 "experimentalDecorators": true,

when compiling typescript files.

car.ts

import {Inject} from 'qs-di-ts'
import {Engine} from './engine'
 
@Inject
export class Car {
  constructor(public engine: Engine) {}
}

engine.ts

export class Engine {
 
}

mockEngine.ts

import {Provide} from 'qs-di-ts'
import {Engine} from './engine'
 
@Provide(Engine)
export class MockEngine {
 
}

main.ts

 
import {Injector} from 'qs-di-ts'
import {Car} from './car'
import {Engine} from './engine'
 
var injector = new Injector();
var car: Car = injector.get(Car); //instantiate car, car.engine is magically instance of Engine! :)
 
 
import {MockEngine} from './mockEngine'
var injector2 = new Injector([MockEngine]);
var car2: Car = injector2.get(Car); //instantiate car, car.engine is instance of MockEngine! :)

License

MIT