One possible way of doing configuration with DI. I think we need something nicer...

di-simple-config.js

function Config() {
  this.useFoo = false;
  this.log = 'infoo;
}


@Inject(Config)
class SomeService{
  constructor(config) {
    // ...
  }
}


// Using a different config
@Provide(Config)
function DebugConfig() {
  this.useFoo = true;
  this.someBar = 1111;
}

var injector = new Injector([DebugConfig]);
injector.get(SomeService);