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https://github.com/xeoneux/next-dark-mode

🌑 Enable dark mode for Next.js apps
https://github.com/xeoneux/next-dark-mode

cookies css-in-js dark-mode dark-theme emotion next next-dark-mode nextjs night-mode night-theme prefers-color-scheme react reactjs styled-components theme

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🌑 Enable dark mode for Next.js apps

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# `next-dark-mode`



🌓 Theme your Next.js apps with a Dark Mode



[![license](https://img.shields.io/npm/l/next-dark-mode?style=for-the-badge)](https://github.com/xeoneux/next-dark-mode/blob/master/LICENSE)

[![npm bundle size](https://img.shields.io/bundlephobia/minzip/next-dark-mode?style=for-the-badge)](https://bundlephobia.com/result?p=next-dark-mode)

[![npm version](https://img.shields.io/npm/v/next-dark-mode?style=for-the-badge)](https://www.npmjs.com/package/next-dark-mode)









## Contents:



- [Features](#features)

- [Requirements](#requirements)

- [Installation](#installation)

- [Usage](#usage)

- [Configuration](#configuration)

- [Resources](#resources)



## Features






### Auto mode



`next-dark-mode` optionally supports **auto mode** which automatically switches the user's theme as per the color mode selected on their operating system.



[Windows](https://blogs.windows.com/windowsexperience/2016/08/08/windows-10-tip-personalize-your-pc-by-enabling-the-dark-theme) and [macOS](https://support.apple.com/en-in/HT208976) both support setting the dark or light mode based on the time of the day.



It is achieved via `prefers-color-scheme` media query.






### No page load glitch



`next-dark-mode` uses configurable **cookies** to persist the state of the current theme, one for the _auto mode_ and the other for the _dark mode_.



This prevents the common page load glitch with the local storage approach where the app loads on the client and then the state of the user's theme is fetched.



You can see it in this implementation by [Pantaley Stoyanov](https://pantaley.com).



NOTE: This library is not compatible with [Next.js 9's Auto Partial Static Export](https://nextjs.org/blog/next-9#automatic-partial-static-export) feature as it has to read the cookies in `getInitialProps` function, which makes all pages incompatible with Automatic Partial Static Export feature.



## Requirements



To use `next-dark-mode`, you must use `[email protected]` or greater which includes [Hooks](https://reactjs.org/docs/hooks-intro.html).



## Installation



```sh

$ yarn add next-dark-mode



or



$ npm install next-dark-mode

```



## Usage



1. Wrap your [\_app.js](https://nextjs.org/docs/advanced-features/custom-app) component (located in `/pages`) with the [HOC](https://reactjs.org/docs/higher-order-components.html) `withDarkMode`



   ```js

   // _app.js

   import App from 'next/app'

   import withDarkMode from 'next-dark-mode'



   export default withDarkMode(App)

   ```



2. You can now use the `useDarkMode` hook anywhere in your app



   ```js

   import { useDarkMode } from 'next-dark-mode'



   const MyComponent = props => {

     const {

       autoModeActive,    // boolean - whether the auto mode is active or not

       autoModeSupported, // boolean - whether the auto mode is supported on this browser

       darkModeActive,    // boolean - whether the dark mode is active or not

       switchToAutoMode,  // function - toggles the auto mode on

       switchToDarkMode,  // function - toggles the dark mode on

       switchToLightMode, // function - toggles the light mode on

     } = useDarkMode()



    ...

   }

   ```



### With CSS-in-JS libraries (like emotion or styled-components)



1. Wrap your [\_app.js](https://nextjs.org/docs/advanced-features/custom-app) component (located in `/pages`) with the [HOC](https://reactjs.org/docs/higher-order-components.html) `withDarkMode` and pass the values to the `ThemeProvider` so that you can use it in your components



   ```js

   // _app.js

   import { ThemeProvider } from '@emotion/react' // or styled-components

   import withDarkMode from 'next-dark-mode'



   function MyApp({ Component, darkMode, pageProps }) {

     const { autoModeActive, autoModeSupported, darkModeActive } = darkMode



     return (

       

         

       

     )

   }



   export default withDarkMode(MyApp)

   ```



## Configuration



The `withDarkMode` function accepts a `config` object as its second argument. Every key is optional with default values mentioned:



- `autoModeCookieName`: string - Name of the cookie used to determine whether the auto preset is enabled.

  Defaults to `'autoMode'`.

- `cookieOptions`: object - Configuration [options](https://github.com/jshttp/cookie#options-1) for the cookies that gets set on the client.

  Defaults to `{ sameSite: 'lax' }`.

- `darkModeCookieName`: string - Name of the cookie used to determine whether the dark preset is enabled.

  Defaults to `'darkMode'`.

- `defaultMode`: string - Determines the default color mode when there's no cookie set on the client. This usually happens on the first ever page load. It can either be `'dark'` or `'light'` and it defaults to `'light'`.



## Resources



- [CSS-Tricks | Dark Mode in CSS](https://css-tricks.com/dark-modes-with-css)

- [`prefers-color-scheme` browser support](https://caniuse.com/#feat=prefers-color-scheme)

- [prefers-color-scheme: Hello darkness, my old friend](https://web.dev/prefers-color-scheme)

- [Browsers Are Bringing Automatic Dark Mode to Websites](https://www.howtogeek.com/440920/browsers-are-bringing-automatic-dark-mode-to-websites)

- [Create a dark mode in React with CSS variables and localStorage](https://pantaley.com/blog/Create-a-dark-mode-in-React-with-CSS-variables-and-localStorage)