postcss-simple-vars

PostCSS Simple Variables

PostCSS plugin for Sass-like variables.

You can use variables inside values, selectors and at-rule parameters.

$dir:    top;
$blue:   #056ef0;
$column: 200px;

.menu_link {
  background: $blue;
  width: $column;
}
.menu {
  width: calc(4 * $column);
  margin-$(dir): 10px;
}

.menu_link {
  background: #056ef0;
  width: 200px;
}
.menu {
  width: calc(4 * 200px);
  margin-top: 10px;
}

If you want be closer to W3C spec, you should use postcss-custom-properties and postcss-at-rules-variables plugins.

Look at postcss-map for big complicated configs.

Docs

Read full docs on GitHub.