console.time("counter");
for (let i = 0; i < 1000000000; i++) {}
console.timeEnd("counter");
counter: 933.401ms
// persisting Context of theme | |
import React from 'react'; | |
import { useState, useEffect, useContext } from 'react'; | |
import { usePersist } from '../hooks'; | |
import { themeType } from '../types'; | |
export interface IThemeProviderProps { | |
theme: themeType; | |
themeLoaded: boolean; |
import { useState, useEffect } from 'react'; | |
export const usePersist = (key: string, initialValue: any) => { | |
const [value, setValue] = useState(() => { | |
const storedValue = localStorage.getItem(key); | |
return storedValue ? JSON.parse(storedValue) : initialValue; | |
} | |
); | |
useEffect(() => { |