Method onInit

packages/core/src/application.ts:333–343

* Register a function to be called when the application initializes. * * This is a shortcut for adding a binding for a LifeCycleObserver * implementing a `init()` method. * * @param fn The function to invoke, it can be synchronous (returning `void`) * or asynchronous (returning `Pr

(fn: () => ValueOrPromise<void>)

   * @returns The LifeCycleObserver binding created.
   */
  public onInit(fn: () => ValueOrPromise<void>): Binding<LifeCycleObserver> {
    const key = [
      CoreBindings.LIFE_CYCLE_OBSERVERS,
      fn.name || '<onInit>',
      generateUniqueId(),
    ].join('.');

    return this.bind<LifeCycleObserver>(key)
      .to({init: fn})
      .apply(asLifeCycleObserver);
  }

  /**
   * Start the application, and all of its registered observers. The application