intake.js

A simple DI container based on ES7 Decorators written in Typescript.

Install

You can get the package via npm:

npm install intakejs

Just import decorators and you are ready to go:

import {Service, Inject} from "intakejs"

To use intake.js in node.js/io.js enviroment, just import it with require statement:

let intake = require('intake');

AMD version for client-side usage is also available:

require(['node_modules/intakejs/build/intake.amd'], function(intake) {
    ...
});

Usage

Usage is quite simple:

1. Use definition reference:

/// <reference path="<my_project>/node_modules/intake.js/build/intake.d.ts" />

2. Import decorators:

import {Service, Inject} from "intakejs";

3. Define a service:

@Service
class Producer { 
    //ensure your service class has a constructor with no arguments
        
    public static service_name = 'producer'; //this field is runtime id for your service
        
    foo() {
        return 'foo';
    }
}

4. Inject it in consumer class:

class Consumer {
    @Inject('producer')     //injects service with name 'producer'
    private foo: Producer;  //you can use this field after class is constructed

    public bar(): string {
        return this.foo.foo() + 'bar';
    }
}

5. That's all, you can use it:

let consumer = new Consumer();
consumer.bar(); //returns "foobar"

Roadmap

• Add name parameter to @Service decorator
• Create mechanism for injecting mock dependencies in test enviroment
• Use decorators metadata for automatic service name generation
• Add support for injecting service into constructor

License

MIT