simple dependency injection

injector(DI)

class 	DInjector {
    inject:any;
    modules:any;

    constructor() {
        this.inject = {};
        this.modules = {};
    }

    public 	register(name:string, dependency:string[], fn:any) {
        this.inject[name] = {
            dep: 	dependency,
            fn: 	fn
        };
    }

    private	dependencyInjection(module:string) {
        if (!this.modules.hasOwnProperty(module)) {
            var self    = this;
            var args 	= [null];

            this.inject[module].dep.forEach(function (itm) {
                args.push(self.dependencyInjection(itm));
            });
            var cache   = this.inject[module].fn.bind.apply(this.inject[module].fn, args);
            this.modules[module] = new cache();
        }
        return (this.modules[module]);
    }

    public 	start() {
        for (var name in this.inject) {
            try         { this.dependencyInjection(name) }
            catch (err) { throw Error('injection loop with ' + name) }
        }
    }
}

var di = new DInjector();


class   Router {
    constructor(Bdd) {
        console.log('ctor Router');
        console.log('need to route on ', Bdd.host, ':', Bdd.port);
    }
}

class   Bdd {
    host    :string;
    port    :number;

    constructor() {
        console.log('ctor Bdd');

        this.host = '127.0.0.1';
        this.port = 4242;
    }
}

di.register('Router', ['Bdd'], Router);
di.register('Bdd', [], Bdd);


di.start();