React Slideshow Component

A React Slideshow component with all the bells and whistles

I loved the slider used in https://www.educative.io/ so I wanted to recreate the design and functionality with React.

Features

Previous/Next Slide
Autoplay slides
Restart slider
Expand/Collapse all slides
Fullscreen slides mode

Simple API

const data = [
  {
    title: "First",
    text: "foo bar baz"
  },
  ...
];

...

// optional prop autoPlayTime to control autoplay time on slide
<Slides slides={data} />

To avoid repeating code I utilized a few custom hooks:

useCount – for controlling active slide index

import { useState } from "react";

export const useCount = (initialValue = 0) => {
  const [activeIndex, setActiveIndex] = useState(initialValue);

  const increment = () => {
    setActiveIndex((prev) => prev + 1);
  };

  const decrement = () => {
    setActiveIndex((prev) => prev - 1);
  };

  const reset = () => {
    setActiveIndex(initialValue);
  };

  return [activeIndex, increment, decrement, reset];
};

useToggle – for controlling expanded/collapsed slides, autoplay mode and full screen mode

import { useCallback, useState } from "react";

export const useToggle = (initialValue = false) => {
  const [state, setState] = useState(initialValue);
  const toggle = useCallback(() => setState((state) => !state), []);
  return [state, toggle];
};

useInterval – for controlling slide increments in autoplay mode

import { useEffect, useRef } from "react";
export const useInterval = (callback, delay) => {
  const intervalId = useRef(null);
  const savedCallback = useRef(callback);

  useEffect(() => {
    savedCallback.current = callback;
  });

  useEffect(() => {
    const tick = () => savedCallback.current();

    if (typeof delay === "number") {
      intervalId.current = window.setInterval(tick, delay);

      return () => window.clearInterval(intervalId.current);
    }
  }, [delay]);

  return intervalId.current;
};