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Creating a design token overview

If you use CSS custom properties in your project, which are named based on a certain logic, miyagi can automatically create a visual overview of your design tokens based on these custom properties.

To do so, add the following to your configuration:

"assets": {
  "customProperties": {
    "files": ["file/with/custom/properties.css"]

Naming of custom properties

miyagi scans the CSS files for custom properties, which start with a specific prefix. By default these prefixes are:

  • color
  • typo
  • spacing


Custom properties, that are named --color-${name}, are interpreted as colors, which can be used for typography but also as decorative colors. You can also name the custom properties like --color-typo-${name} or --color-decoration-${name}. That way miyagi knows that this color is only supposed to be used for typography or decorations like background, border etc., and will render them accordingly.


  • --color-Primary
  • --color-decoration-Gold
  • --color-typo-Headline


As typography consists of multiple CSS properties (as opposed to colors and spacings), miyagi looks for custom properties, that start with --typo-${name} and end with any of the following:

  • -font-family
  • -font-feature-settings
  • -font-kerning
  • -font-size-adjust
  • -font-size
  • -font-stretch
  • -font-style
  • -font-variant-caps
  • -font-variant
  • -font-weight
  • -letter-spacing
  • -line-height
  • -text-shadow
  • -text-transform

miyagi will then use all these custom properties to render an exemplary text node.


  • --typo-Headline-font-family
  • --typo-Headline-font-size
  • --typo-Headline-line-height


Custom properties for spacings need to be simply called --spacing-${name}.


  • --spacing-12
  • --spacing-24
  • --spacing-32


You can customize the prefixes in your configuration like this:

"assets": {
  "customProperties": {
    "prefixes": {
      "color": "color",
      "typo": "typo",
      "spacing": "spacing"