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CSS Variables Theme
Switch CSS files to change themes
npm install @etchteam/storybook-addon-css-variables-theme
Last updated about 1 month ago
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Readme View on GitHub

Storybook Addon CSS Variables Theme

Storybook CSS Variables Theme can be used to switch out CSS files in Storybook.

React Storybook Screenshot

Installation

npm install @etchteam/storybook-addon-css-variables-theme --save-dev

Configuration

Step 1: Add the addon

Create a file called main.js in your .storybook folder.

Add the following code to it:

module.exports = {
  addons: ['@etchteam/storybook-addon-css-variables-theme'],
};

Step 2: Include your CSS files

Create a file called preview.js in your .storybook folder.

In this file you will need to import your style files using a loader. Here's an example of how to do this:

import light from '!!style-loader?injectType=lazyStyleTag!css-loader!../src/styles/light.css'
import dark from '!!style-loader?injectType=lazyStyleTag!css-loader!../src/styles/dark.css'

This code calls style-loader with ?injectType=lazyStyleTag so that it doesn't run the CSS immediately.

You can swap out css-loader for your preferred SCSS/Less/etc loaders.

Step 3: Add the Decorator

In the same preview.js file import the decorator from the CSS Variables Theme addon

import cssVariablesTheme from '@etchteam/storybook-addon-css-variables-theme'

export const decorators = [
  cssVariablesTheme,
];

Then pass the CSS files to the addon via the exported parameters.

export const parameters = {
  cssVariables: {
    files: {
      'Light Theme': light,
      'Dark Theme': dark,
    }
  }
}

If a default theme should be selected from first load add 'defaultTheme' to the options.

export const parameters = {
  cssVariables: {
    files: {
      'Light Theme': light,
      'Dark Theme': dark,
    },
    defaultTheme: 'Light Theme'
  }
}

Set a specific theme for a story

Pass the theme key as the theme parameter on the story to default to a specific theme:

export default {
  title: 'Example/Header',
  component: Header,
  parameters: {
    cssVariables: {
      theme: 'dark'
    }
  }
};

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