Function goToPrev

src/components/testimonial.js:105–113

()

  const visibleTestimonials = testimonials.slice(current, current + numVisible);

  const goToPrev = () => {
    setCurrent((prev) => {
      if (prev === 0) {
        return testimonials.length - numVisible;
      } else {
        return prev - 1;
      }
    });
  };

  const goToNext = () => {
    setCurrent((prev) => {