ronaldruzicka

import { createContext, useContext, useState } from 'react'

type User = {
  firstName: string
  lastName: string
  email: string
}

type Updater = (user: User) => void

ronaldruzicka

import { createContext, useContext, useState } from 'react';

type Props = {
  children: React.ReactNode | React.ReactNode[];
};

type Context = {
  isExpanded: boolean;
  toggleItem?: () => void;
};

ronaldruzicka

import { useRef, useEffect } from 'react'

/**
 * Saves previous value, if you need to compare it to a current value
 * @param value - anything you need to store as a previous value
 */
export const usePrevious = <T>(value: T) => {
  const ref = useRef<T>()

  // Store current value in ref