text: const targetCanvas = document.getElementById('targetCanvas');
  const targetCanvasWidth = targetCanvas.width;
  const targetCanvasHeight = targetCanvas.height;
  
  const app = new PIXI.Application(targetCanvasWidth, targetCanvasHeight, { view: targetCanvas });
  
  const spriteNum = 5000;
  PIXI.loader.add('assets/img/test.png').load(() => {
    for (let spriteCount = 0; spriteCount < spriteNum; spriteCount++){
      const sprite = PIXI.Sprite.fromImage('assets/img/test.png');
      app.stage.addChild(sprite);
      sprite.anchor.set(0.5);
      sprite.x = Math.random() * targetCanvasWidth;
      sprite.y = Math.random() * targetCanvasHeight;
    }
  });
  