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DarkMode
A micro library (~360B) for handling dark mode on browsers.

Build Status

Instalation

You can install DarkMode via npm:

npm install --save @kazzkiq/darkmode

Or use it directly in browser via CDN service:

https://unpkg.com/@kazzkiq/darkmode/dist/darkmode.umd.js

When using directly in browser, all functions will be available under DarkMode object.

Usage

import { isDark, onUpdate } from '@kazzkiq/darkmode';

const isDarkMode = isDark();

onUpdate((isDark) => {
  // isDark will be true or false
});

isDark()

To detect if the browser is in dark mode, simply run isDark().

import { isDark } from '@kazzkiq/darkmode';

const isDarkMode = isDark(); // true|false

onUpdate()

To detect if the browser toggled dark mode, you can rely on onUpdate().

import { onUpdate } from '@kazzkiq/darkmode';

onUpdate((isDark) => {
  // isDark returns true|false
});

setDark()

Sometimes you will want to let your user decide to enforce dark mode, even when their OS doesn't supports it. In these cases you can programatically set dark mode locally, and by making use of localStorage DarkMode can then behave accordingly.

import { setDark, isDark, isDarkLocal } from '@kazzkiq/darkmode';

setDark(true); // now this user is in DarkMode

isDark(); // reads browser/OS dark mode, thus returns false
isDarkLocal(); // reads localStorage value, thus returns true

setDark() also triggers onUpdate() automatically.

isDarkLocal()

isDark() will always returns browser/OS dark mode status. When you enforce dark mode using setDark(), you can then use isDarkLocal() to check if the user preference is for dark mode even with browser/OS not being in this mode.

import { isDarkLocal } from '@kazzkiq/darkmode';

const isDarkMode = isDarkLocal(); // true|false based on localStorage, not on browser/OS configs.

Browsers which doesn't support it

For any browser that doesn't supports dark mode, the isDark() function will always return false.

Even in browsers that doesn't supports it, you can still "simulate" it by using setDark() and isDarkLocal().

Function conflicts

In case of any of DarkMode functions conflict with current functions in your project, you can import them under DarkMode namespace to prevent conflicts:

import * as DarkMode from '@kazzkiq/darkmode';

DarkMode.isDark();
DarkMode.onUpdate();
DarkMode.setDark();
// ...