Can't destroy slick - unslick function returns error

Not sure if anyone is still looking at this but I was stuck on it for an hour. I realised I have either read the way you call methods wrong or it’s changed.

Instead of carousel.unslick(); you should use carousel.slick("unslick");

In my case I needed to destroy slick at a certain window size. This worked for me:

var $carousel = $('.carousel');

if (breakpoint === 'mobile') {
  if($carousel.hasClass('slick-initialized')) {
    $carousel.unslick();
  }
  $carousel.slick();
} else {
  $carousel.unslick();
}