simple-dependency-container

Provides dependency injection for NodeJS apps

No need to use Annotations and Strings to identify dependencies, the actual Class reference is enough.

main.ts
`` js
export class Dependency1 {
}

export class Dependency2 {
}

export class Parent1 {
constructor(
private dep1: Dependency1,
private dep2: Dependency2,
private textValue: string) {
}
}
`

container.ts
` js
import { SimpleDependencyContainer } from 'simple-dependency-container';
import { Dependency1, Dependency2, Parent1 } from './main';

let container = new SimpleDependencyContainer();
container.registerType(Dependency1); // registered as singleton
container.registerType(Dependency2); // registered as singleton

container.registerType(Parent1) // registered as singleton
.argDependency(Dependency1)
.argDependency(Dependency2)
.argValue('Injected Value');

export default container;
`

server.ts
` js
import container from './container';
import { Dependency1, Dependency2, Parent1 } from './main';

// parent1 will have injected dependencies
let parent1 = container.getInstance(Parent1);

// also you can ask for dependency directly
let dependency1 = container.getInstance(Dependency1);
``

Note, all instances are singletons.