// "app" is an instance of PixiJS Application
export default app => (filename) => {
  const {
    resources,
  } = app.loader;

  const texture = Object
    .values(resources)
    .filter(resource => resource.textures)
    .flatMap(resource => Object.entries(resource.textures))
    .find(([key]) => key === `${filename}.png`);

  if (!texture) throw new Error(`Texture "${filename}" not found.`);

  return texture[1];
};

// Example usage, assuming you have an image called 'player':

// const texture = getTexture(‘player’)
// const sprite = new Pixi.Sprite(texture)