packages/build-tools/plugins/postcss-themify/src/index.js
function createRuleWithVariation(rule, variationName) {
  const selector = getSelectorName(rule, variationName);
  return postcss.rule({
    selector,
  });
}
function createRuleWithVariation(rule, variationName) {
  const selector = getSelectorName(rule, variationName);
  return postcss.rule({
    selector,
  });
}
function createRuleWithVariation ( rule , variationName ) { const selector = getSelectorName ( rule , variationName ) ; return postcss . rule ( { selector , } ) ; }
Create a new rule for the given variation, out of the original rule
@param rule
@param variationName
Create a new rule for the given variation out of the original rule