src/language-css/utils.js/hasSCSSInterpolation
function hasSCSSInterpolation(groupList) {
  if (groupList && groupList.length) {
    for (let i = groupList.length - 1; i > 0; i--) {
      // If we find `#{`, return true.
      if (
        groupList[i].type === "word" &&
        groupList[i].value === "{" &&
        groupList[i - 1].type === "word" &&
        groupList[i - 1].value.endsWith("#")
      ) {
        return true;
      }
    }
  }
  return false;
}