progressive-image#setup-directives.ts

@Directive({
  selector: 'img[appProgressiveImage]',
})
export class ProgressiveImageDirective {
  @Input() src: string;
  width: number;
  height: number;
}

@Directive({
  selector: '[appProgressiveImageFallback]',
})
export class ProgressiveImageFallbackDirective {
  width: number;
  height: number;
}

@Directive({
  selector: '[appProgressiveImagePlaceholder]',
})
export class ProgressiveImagePlaceholderDirective {
  width: number;
  height: number;
}