Use the stylesheet paired shortcode to include your Sass. You can import Sass files from your styles directory (defined in .twelvety.js) and from node_modules. The Sass will be rendered using dart-sass, passed into PostCSS (with PostCSS Preset Env and Autoprefixer for compatibility) and either minified using clean-css or beautified by JS Beautifier (in production and development respectively).

{% stylesheet 'scss' %}
  @import "normalize.css/normalize";
  @import "mixins";

  .home {
    @include container;

    color: $color--red;
  }
{% endstylesheet %}

The second parameter of the stylesheet paired shortcode is the language; currently, this does nothing and is included solely to align with Shopify's definition of the shortcode. If you want to use Sass indented syntax, you can change the indentedSass Twelvety option, found in .twelvety.js.

The stylesheet paired shortcode also has a third parameter, which by default is set to page.url, the URL of the current page being rendered. This means that only the required CSS is included in each page. You can make your own 'chunk' of CSS using this parameter, for example, a CSS file common to all pages of your website.

The styles shortcode collects together all Sass written in stylesheet paired shortcodes for the given chunk and outputs the rendered CSS. The 'chunk' defaults to page.url, the URL of the current page being rendered.

<!-- Inline all styles on current page -->
<style>
  {% styles page.url %}
</style>

<!-- Capture styles on current page -->
{% capture css %}
  {% styles page.url %}
{% endcapture %}
<!-- And output asset using `asset` shortcode -->
<link rel="stylesheet" href="%7B%%20asset%20css,%20'css'%20%%7D">

Note that the styles shortcode must be placed below any stylesheet paired shortcodes in the template; see the append paired shortcode and transform for more information.

Include your JavaScript using the javascript paired shortcode. Twelvety uses Browserify so that you can require('modules') and Babel so you can use the latest JavaScript. Your JavaScript will then be minified using Uglify in production or beautified by JS Beautifier in development.

{% javascript %}
  const axios = require("axios");

  axios.get("/api/endpoint")
    .then((response) => {
      console.log("Yay, it worked!");
    })
    .catch((error) => {
      console.log("Uh oh, something went wrong");
    });
{% endjavascript %}

The javascript paired shortcode has a second parameter, which by default is set to page.url, the URL of the current page being rendered. This means that only the required JavaScript is included in each page. You can make your own 'chunk' of JavaScript using this parameter, for example, a JavaScript file for all vendor code.

The output of each javascript paired shortcode will be wrapped in an IIFE so that your variables do not pollute global scope. If you want to define something on window, use window.something =.

The script shortcode collects together all the JavaScript for the given chunk and outputs the JavaScript (after transpilation and minification). The 'chunk' defaults to page.url, the URL of the current page being rendered.

<!-- Inline all JavaScript on current page -->
<script>
  {% script page.url %}
</script>

<!-- Capture JavaScript on current page -->
{% capture js -%}
  {% script page.url %}
{%- endcapture -%}
<!-- And output asset using `asset` shortcode -->
<script src="%7B%%20asset%20js,%20'js'%20%%7D" defer></script>

Note that the script shortcode must be placed below any javascript paired shortcodes in the template; usually this is not a problem as JavaScript is often included immediately preceding `