ngOnInit() {

     PIXI.loader
          .add([
               'assets/images/chicken.png', // load sprite textures (note a TON more configurations and options not shown here)
               'assets/images/chick.png'    // note you do not have to use array, you can chain multiple .add('myPath') together
          ])
          .on("progress", this.loadProgressHandler)
          .load(this.setup.bind(this));
}

loadProgressHandler(loader, resource) {      // handles progress for loading (optional)
     console.log(`loaded ${resource.url}. Loading is ${loader.progress}% complete.`);
}

setup() {                                                             // runs when textures are done loading

     const bunny:Sprite = new PIXI.Sprite( 
          PIXI.loader.resources['assets/images/chicken.png'].texture  // create a new Sprite from an image path
     );

     bunny.position.set(this.app.renderer.view.width / 2, this.app.screen.height / 2); // move the sprite to the center of the screen

     this.app.stage.addChild(bunny); // adds the sprite to the stage
}