Extract-styles

A node tool to generate a theme from SCSS files.

Extract-styles analyzes input SCSS files and extracts all definitions marked with a special 'theme' comment.

You can later load the resulting theme file, set the theme class on the body/root of the page to apply the new styles.

Before/after

Write your SCSS as you'd normally do, but mark the lines required in the theme file with @theme:

.foo {
  width: 100%;
  color: #ffff00; // @theme 
  font-weight: bold;
  border: 1px solid #ff0000; // @theme 
  
  &__content {
    padding: 10px;
    background-color: #eee; // @theme 
  }
}

After running extract-styles, you'll get a theme file with the marked lines extracted:

.theme-default {
  .foo {
    color: #ffff00;
    border: 1px solid #ff0000;
  
    &__content {
      background-color: #eee;
    }
  }
}    

Install

$ npm install extract-styles --save-dev

Usage: CLI

Start the CLI and progress step-by-step with style extraction:

$ ./node_modules/.bin/extract-styles

Combine the following options to use with watchers (npm-watch or nodemon):

$ ./node_modules/.bin/extract-styles --root src --output src/themes/theme.scss --template t.tpl --mark @myTheme

--root      Define the root directory to start searching for SCSS files.
--output    The resulting SCSS theme file. Supply full path with filename and scss extension.
--template  Custom template for generating the theme file. Useful when you want to include imports.
--mark      Define a custom theme mark. It can be any string that will be unique for marking theme lines. (Default: @theme).

Contributing

PRs are much appreciated!

Use npm start while coding and npm test to run unit tests.

License

MIT © Marton Czebe