CSS modulizer

Use with CSS Modules without a JS framework.

What?

Working from the premise that CSS Modules—which allow for locally-scoped, truly modular CSS—are a preferred way to author styles, this script allows you to make use of CSS Modules without the need for a JS framework.

Arguments

This script exports a function takes a single object as its only parameter. The following properties are valid:

Property	Type	Description
className	string	A CSS Modules class name
element	object	The component's element
children	object	Key/value pairs of selector/localized CSS Module classes
hiddenInitially	boolean	If the component is initially hidden

How?

Load your component script inside the component you're working with, e.g.:

<article>
  <script async
    type="text/javascript"
    src="path/to/component.js">
  </script>
  <h2>My Title</h2>
  <p>Some more stuff...</p>
  <div class="tags">Art, cats, bird watching</div>
</article>

And, in component.js:

import { article, title, excerpt, tags } from './component.css';
import cssmodulizer from 'path/to/cssmodulizer';

cssmodulizer({
  className: article,
  children: {
    'h2': title,
    'p': excerpt,
    '.tags': tags,
  },
});

This will add the locally scoped article class to the <article> tag in the above example, while also add locally scoped classes for each of the given children: h2 (title), p (excerpt), and .tags (tags).

It's recommended that you hide the component initially to prevent a FOUC, like so:

<article>
  <style> article { visibility: hidden } </style>
  <script async
    type="text/javascript"
    src="path/to/component.js">
  </script>
  <h2>My Title</h2>
  <p>Some more stuff...</p>
  <div class="tags">Art, cats, bird watching</div>
</article>

The script will remove that style tag (by default), once it has loaded.