message: cleanse primer CSS of vendored pseudo-selectors
diff: @@ -87,9 +87,10 @@ export function getComputedStyles(className) {
  return computed
  function readRule(rule, dest) {
  - if (!rule.selectorText) {
  + const cleanSelector = rule.selectorText.replace(/::-(moz|ms|webkit)-([-a-z]+)/, '')
  + if (!cleanSelector) {
  // console.warn('no selector text:', rule)
  - } else if (div.matches(rule.selectorText)) {
  + } else if (div.matches(cleanSelector)) {
  const {style} = rule
  for (let i = 0; i < style.length; i++) {
  const prop = style[i]
  