src/language-css/utils/index.js/isConfigurationNode
function isConfigurationNode(node, parentNode) {
  if (
    node.open?.value !== "(" ||
    node.close?.value !== ")" ||
    node.groups.some((group) => group.type !== "value-comma_group")
  ) {
    return false;
  }
  if (parentNode.type === "value-comma_group") {
    const prevIdx = parentNode.groups.indexOf(node) - 1;
    const maybeWithNode = parentNode.groups[prevIdx];
    if (
      maybeWithNode?.type === "value-word" &&
      maybeWithNode.value === "with"
    ) {
      return true;
    }
  }
  return false;
}